UV (ultraviolet) tackifying protective film for OLED (organic light emitting diode) flexible panel and preparation method thereof
阅读说明：本技术 一种oled柔性面板用uv增粘保护膜及其制备方法 (UV (ultraviolet) tackifying protective film for OLED (organic light emitting diode) flexible panel and preparation method thereof ) 是由 张峰 师强 余莉 张俊锋 杨敏 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种OLED柔性面板用UV增粘保护膜及其制备方法,其特征是：保护膜由顺次的抗静电层、透明PET薄膜层、抗静电层、离型剂层、UV亚克力胶粘剂层、透明PET薄膜层、抗静电层、有机硅胶粘剂层、抗静电层和透明PET薄膜层复合组成；UV亚克力胶粘剂由固含量18～30%的UV亚克力预聚树脂、热固化剂、光引发剂,抗静电剂和稀释溶剂混合组成；制备方法为：配制UV亚克力胶粘剂,将UV亚克力胶粘剂涂布在单面抗静电聚酯薄膜的非抗静电面上、经烘道烘干后与双面抗静电离型聚酯薄膜的离型剂面复合、再与抗静电有机硅保护膜的有机硅胶粘剂一面复合制得。本发明保护膜适用在OLED柔性面板制程过程中使用,性能良好。(The invention discloses a UV (ultraviolet) tackifying protective film for an OLED (organic light emitting diode) flexible panel and a preparation method thereof, and the UV tackifying protective film is characterized in that: the protective film is formed by compounding an antistatic layer, a transparent PET film layer, an antistatic layer, a mold release layer, a UV acrylic adhesive layer, a transparent PET film layer, an antistatic layer, an organic silicon adhesive layer, an antistatic layer and a transparent PET film layer in sequence; the UV acrylic adhesive is formed by mixing UV acrylic pre-polymerized resin with the solid content of 18-30%, a thermal curing agent, a photoinitiator, an antistatic agent and a diluting solvent; the preparation method comprises the following steps: preparing a UV acrylic adhesive, coating the UV acrylic adhesive on the non-antistatic surface of the single-sided antistatic polyester film, drying the UV acrylic adhesive by a drying tunnel, compounding the UV acrylic adhesive with the release agent surface of the double-sided antistatic release polyester film, and compounding the UV acrylic adhesive with the organic silicon adhesive surface of the antistatic organic silicon protective film. The protective film is suitable for being used in the process of manufacturing the OLED flexible panel, and has good performance.)
1. The UV tackifying protective film for the OLED flexible panel is characterized in that: the UV tackifying protective film for the OLED flexible panel is formed by compounding an antistatic layer (1), a transparent PET film layer (2), an antistatic layer (3), a release agent layer (4), a UV acrylic adhesive layer (5), a transparent PET film layer (6), an antistatic layer (7), an organic silicon adhesive layer (8), an antistatic layer (9) and a transparent PET film layer (10) in sequence;
the UV acrylic adhesive layer (5) is formed by a dried UV acrylic adhesive, and the UV acrylic adhesive is formed by mixing 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 0.1-5 parts by mass of a thermal curing agent, 0.1-5 parts by mass of a photoinitiator, 0.5-2 parts by mass of an antistatic agent and 50-200 parts by mass of a diluting solvent;
the thermal curing agent is one or a mixture of more than two of methyl diisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate and hexamethylene diisocyanate;
the photoinitiator is one or a mixture of two of 1-hydroxy-cyclohexyl benzophenone and 2-hydroxy-2-methyl-1-phenyl-1-acetone;
the antistatic agent is one of an antistatic agent with a model number of KJD.F010 produced by Chongqing Cuanli technology company, an antistatic agent with a brand number of antistatic liquid TPL-25 or FL-40 produced by Suzhou Tepley new material company, an antistatic agent with a model number of IL-AP8 produced by Shanghai ChangZao and an antistatic agent with a model number of YL-1001 produced by Ningbo original new material;
the diluting solvent is one or two of toluene, ethyl acetate, butanone and cyclohexanone.
2. The UV adhesion promoting protective film for OLED flexible panels as claimed in claim 1, wherein: the antistatic PET film is characterized in that the antistatic layer (1), the transparent PET film layer (2) and the antistatic layer (3) form a double-sided antistatic polyester film A, the transparent PET film layer (6) and the antistatic layer (7) form a single-sided antistatic polyester film B, and the antistatic layer (9) and the transparent PET film layer (10) form a single-sided antistatic polyester film C;
the preparation method of the double-sided antistatic polyester film A comprises the following steps: coating antistatic agent on the two sides of the transparent PET film, and drying the transparent PET film through a drying channel at the temperature of 75-110 ℃ to obtain the transparent PET film;
the preparation methods of the single-sided antistatic polyester film B and the single-sided antistatic polyester film C are as follows: the antistatic agent is coated on one side of the transparent PET film and then the transparent PET film is dried through a drying channel at the temperature of 75-110 ℃ to obtain the antistatic PET film.
3. The UV adhesion promoting protective film for OLED flexible panels as claimed in claim 2, wherein: the double-sided antistatic polyester film A and the release agent layer (4) form a double-sided antistatic release polyester film; the preparation method of the double-sided antistatic release polyester film comprises the following steps: coating a release agent on one surface of a double-sided antistatic polyester film A, and drying through a drying channel at the temperature of 75-110 ℃ to obtain the antistatic polyester film A;
the release agent is a silicon-based release agent.
4. The UV adhesion promoting protective film for OLED flexible panels as claimed in claim 2, wherein: the specific preparation method of the double-sided antistatic polyester film A comprises the following steps: uniformly coating the antistatic agent on two sides of the transparent PET film on a coating machine, wherein the coating thickness is 0.3-1 mu m, and thus obtaining the coated antistatic polyester film; running the coated antistatic polyester film at a linear speed of 30m/min, and passing the coated antistatic polyester film through a drying tunnel with the total length of 42m, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ in sequence to prepare a double-sided antistatic polyester film A;
the specific preparation method of the single-sided antistatic polyester film comprises the following steps: uniformly coating the antistatic agent on one side of the transparent PET film on a coating machine, wherein the coating thickness is 0.3-1 mu m, and thus obtaining the coated antistatic polyester film; the coated antistatic polyester film is operated at the linear speed of 30m/min, and passes through a drying tunnel with the total length of 42m, and the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ in sequence, so that the single-sided antistatic polyester film is prepared.
5. The UV adhesion promoting protective film for OLED flexible panel according to claim 2, 3 or 4, wherein: the organic silicon adhesive layer and the single-side antistatic polyester film C form an antistatic organic silicon protective film; the preparation method of the antistatic organic silicon protective film comprises the following steps: coating the antistatic surface of the single-sided antistatic polyester film C with an organic silicon adhesive, and drying the single-sided antistatic polyester film C through a drying tunnel at the temperature of 80-165 ℃.
6. A preparation method of a UV (ultraviolet) tackifying protective film for an OLED (organic light emitting diode) flexible panel is characterized by comprising the following steps:
a. preparing a UV acrylic adhesive:
taking raw materials of each component according to the mixture ratio of 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 0.1-5 parts by mass of thermal curing agent, 0.1-5 parts by mass of photoinitiator, 0.5-2 parts by mass of antistatic agent and 50-200 parts by mass of diluent solvent;
adding UV acrylic pre-polymerized resin with the solid content of 18-30% into a mixing kettle, stirring, adding a diluting solvent at room temperature, stirring uniformly, adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 20-30 min to obtain a UV acrylic adhesive;
the thermal curing agent is one or a mixture of more than two of methyl diisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate and hexamethylene diisocyanate;
the photoinitiator is one or a mixture of two of 1-hydroxy-cyclohexyl benzophenone and 2-hydroxy-2-methyl-1-phenyl-1-acetone;
the antistatic agent is one of an antistatic agent with a model number of KJD.F010 produced by Chongqing Cuanli technology company, an antistatic agent with a brand number of antistatic liquid TPL-25 or FL-40 produced by Suzhou Tepley new material company, an antistatic agent with a model number of IL-AP8 produced by Shanghai ChangZao and an antistatic agent with a model number of YL-1001 produced by Ningbo original new material;
the diluting solvent is one or two of toluene, ethyl acetate, butanone and cyclohexanone;
b. preparing a UV tackifying protective film for an OLED flexible panel:
uniformly coating the UV acrylic adhesive on the non-antistatic surface of the single-sided antistatic polyester film on a coating machine, wherein the coating thickness is 10-30 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 25-50M/min, passing through a drying tunnel with the total length of 20-45M, and sequentially passing through a first section with the temperature of 50-65 ℃, a second section with the temperature of 80-90 ℃, a third section with the temperature of 90-100 ℃, a fourth section with the temperature of 100-110 ℃, a fifth section with the temperature of 100-110 ℃ and a sixth section with the temperature of 50-60 ℃ to obtain a semi-finished product M of the UV tackifying protective film for the OLED flexible panel;
compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.4-0.5 MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel;
and then compounding one side of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic side of the UV tackifying protective film semi-finished product N for the OLED flexible panel under the pressure of a compression roller of 0.4-0.5 MPa and at the room temperature, and finally placing the composite material into a drying room at the temperature of 40-60 ℃ for curing for 24-72 hours to obtain the UV tackifying protective film for the OLED flexible panel.
7. The method for preparing the UV adhesion-promoting protective film for the OLED flexible panel as claimed in claim 6, wherein the method comprises the following steps: the preparation method of the single-sided antistatic polyester film in the step b comprises the following steps: coating an antistatic agent on one side of the transparent PET film, and drying the transparent PET film through a drying channel at the temperature of 75-110 ℃ to obtain the transparent PET film;
the antistatic agent is one of an antistatic agent with a model number of KJD.F010 produced by Chongqing Cuanli technology Co., Ltd, an antistatic agent with a model number of antistatic liquid TPL-25 or FL-40 produced by Suzhou Teplele new material Co., Ltd, an antistatic agent with a model number of IL-AP8 produced by Shanghai ChangZao and an antistatic agent with a model number of YL-1001 produced by Ningbo original new material.
8. The method for preparing the UV adhesion-promoting protective film for the OLED flexible panel as claimed in claim 6, wherein the method comprises the following steps: the preparation method of the double-sided antistatic release polyester film in the step b comprises the following steps: coating a release agent on one surface of the double-sided antistatic polyester film, and drying the film through a drying channel at the temperature of 75-110 ℃ to obtain the antistatic polyester film;
the release agent is a silicon release agent;
the preparation method of the double-sided antistatic polyester film comprises the following steps: coating antistatic agent on the two sides of the transparent PET film, and drying the transparent PET film through a drying channel at the temperature of 75-110 ℃ to obtain the transparent PET film;
the antistatic agent is one of an antistatic agent with a model number of KJD.F010 produced by Chongqing Cuanli technology Co., Ltd, an antistatic agent with a model number of antistatic liquid TPL-25 or FL-40 produced by Suzhou Teplele new material Co., Ltd, an antistatic agent with a model number of IL-AP8 produced by Shanghai ChangZao and an antistatic agent with a model number of YL-1001 produced by Ningbo original new material.
9. The method for preparing the UV adhesion-promoting protective film for the OLED flexible panel as claimed in claim 6, wherein the method comprises the following steps: the preparation method of the antistatic organic silicon protective film in the step b comprises the following steps: coating the antistatic surface of the single-sided antistatic polyester film with an organic silicon adhesive, and drying the single-sided antistatic polyester film through a drying tunnel at the temperature of 80-165 ℃.
10. The method for preparing the UV adhesion-promoting protective film for the OLED flexible panel according to claim 6, 7, 8 or 9, wherein the method comprises the following steps: the specific preparation method of the single-sided antistatic polyester film in the step b comprises the following steps: uniformly coating the antistatic agent on one side of the transparent PET film on a coating machine, wherein the coating thickness is 0.3-1 mu m, and thus obtaining the coated antistatic polyester film; running the coated antistatic polyester film at a linear speed of 30m/min, and passing the film through a drying tunnel with the total length of 42m in sequence, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ to prepare the single-sided antistatic polyester film;
the transparent PET film is a transparent polyethylene terephthalate film for short, and the thickness of the transparent PET film is 25-75 micrometers;
the specific preparation method of the double-sided antistatic ionized polyester film in the step b comprises the following steps: coating a layer of release agent on one surface of the double-sided antistatic polyester film on a coating machine, wherein the coating thickness is 0.3-1 mu m, and thus obtaining the coated antistatic type polyester film; running the coated antistatic release polyester film at a linear speed of 35m/min, and passing the polyester film through a drying tunnel with the total length of 42m in sequence, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ to prepare the double-sided antistatic release polyester film;
the specific preparation method of the double-sided antistatic polyester film comprises the following steps: uniformly coating the antistatic agent on two sides of the transparent PET film on a coating machine, wherein the coating thickness is 0.3-1 mu m, and thus obtaining the coated antistatic polyester film; running the coated antistatic polyester film at a linear speed of 30m/min, and passing the coated antistatic polyester film through a drying tunnel with the total length of 42m, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ in sequence to prepare a double-sided antistatic polyester film;
the specific preparation method of the antistatic organic silicon protective film in the step b comprises the following steps: coating a layer of organic silicon adhesive on the antistatic surface of the single-sided antistatic polyester film on a coating machine, wherein the coating thickness is 5-15 mu m, and thus obtaining a coated antistatic organic silicon protective film; and (3) running the coated antistatic organic silicon protective film at a linear speed of 30-45 m/min, and passing the coated antistatic organic silicon protective film through a drying tunnel with the total length of 42m, wherein the temperature of the first section is 80 ℃, the temperature of the second section is 120 ℃, the temperature of the third section is 160 ℃, the temperature of the fourth section is 165 ℃, the temperature of the fifth section is 150 ℃ and the temperature of the sixth section is 90 ℃ in sequence.
Technical Field
The invention belongs to a protective film in optical display and preparation thereof, and relates to a UV (UV is short for ultraviolet) tackifying protective film for an OLED flexible panel and a preparation method thereof. The UV tackifying protective Film for the OLED flexible panel (prepared) is particularly suitable for a protective Film which plays a role in protecting and supporting a TFE layer (Thin Film Encapsulation) and a backboard in the manufacturing process and the whole using process of the OLED panel.
Background
With the rapid development of electronic products, the technical requirements of touch display panels are gradually improved, from a hard screen to a flexible screen, from a curved screen to a folding screen to a curling screen, and the requirements on protective films required by touch display products in the manufacturing process are higher and higher.
The OLED (i.e. Organic Light Emitting Diode, also known as Organic electroluminescent Display, Organic Light Emitting semiconductor, OLED < Organic Light-Emitting Diode > manufacturing process relates to the protection and support of the whole OLED flexible screen body, which is a semiconductor, and the protection film of the OLED flexible panel is peeled off and attached again in the manufacturing process. In the prior art, a protective film and a support film of an OLED flexible panel are used separately, and the protective film is peeled off and then attached to the support film for use. The protective film to be peeled off in the process has the protection effect on the whole screen body, good air exhaust performance is required, no adhesive residue and degumming are caused, and ultralow film tearing voltage and surface resistance are required during peeling, for example, "a PU protective film for OLED film packaging process and a preparation method thereof" disclosed in CN110317550A, and "a production method and a product of the protective film for OLED display screen" disclosed in CN110591584A are related and described; the re-attaching of the support protection film needs to protect and support the flexible OLED panel, the voltage and the surface resistance of the re-attaching support protection film are low, the re-attaching support protection film has good adhesive force to the flexible OLED panel, the adhesive force is stable, the adhesive force (180 DEG peeling) is larger than 800gf/25mm, the production method of the support protection film for the simple high-folding treatment of the OLED display screen and the product thereof disclosed in CN 110564319A, and the explanation of the support protection film for the flexible OLED panel is also provided in the method for attaching the support protection film and the flexible OLED display device disclosed in CN 108878666A. However, in the prior art, no corresponding technical scheme and product introduction is provided for the protective film combining the performance characteristics of the protective film and the support film of the OLED flexible panel and the product.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a UV tackifying protective film for an OLED flexible panel and a preparation method thereof. Therefore, the UV tackifying protective film for the OLED flexible panel has low tear film voltage and surface resistance before UV irradiation, good air exhaust, good performances of adhesive force (180-degree stripping) less than 30gf/25mm, stable adhesive force, no adhesive residue degumming and the like, has low tear film voltage and surface resistance after UV irradiation, has the adhesive force (180-degree stripping) increased to be more than 800gf/25mm, replaces the prior process of separately using the protective film and the supporting film, is suitable for being used in the process of manufacturing the OLED flexible panel and the whole using process, and has good performance, and the preparation method thereof.
The content of the invention is as follows: the UV tackifying protective film for the OLED flexible panel is characterized in that: the UV tackifying protective film for the OLED flexible panel is formed by compounding an antistatic layer (1), a transparent PET film layer (2), an antistatic layer (3), a release agent layer (4), a UV acrylic adhesive layer (5), a transparent PET film layer (6), an antistatic layer (7), an organic silicon adhesive layer (8), an antistatic layer (9) and a transparent PET film layer (10) in sequence;
the transparent PET film layer (namely the transparent PET film) is a polyethylene terephthalate film layer for short, and the thicknesses of the transparent PET film layer (2), the transparent PET film layer (6) and the transparent PET film layer (10) can be 25-75 micrometers;
the UV acrylic adhesive layer (5) is composed of a UV acrylic adhesive which is dried (i.e. heated and removed of solvent) under UV light shielding, and the UV acrylic adhesive is formed by mixing 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 0.1-5 parts by mass of a thermal curing agent, 0.1-5 parts by mass of a photoinitiator, 0.5-2 parts by mass of an antistatic agent and 50-200 parts by mass of a diluting solvent;
the UV acrylic pre-polymerized resin is acrylic pre-polymerized resin, and the product production providing enterprises and brands (models) comprise: HT-6537CV or HT-6537CV-3 of Shenzhen Gillendoe, HS-1058V of Guangzhou Huishi science and technology, and the like;
the thermal curing agent (isocyanate) is one or a mixture of more than two of methyl diisocyanate (TDI), isophorone diisocyanate (IPDI), diphenylmethane diisocyanate (MDI) and Hexamethylene Diisocyanate (HDI) (product suppliers include Bayer Corsai, Bassfu, Japan npu, Yingchu, Vencor and Wanhua), etc.;
the photoinitiator is one or a mixture of two of 1-hydroxy-cyclohexyl benzophenone (or 184 photoinitiator) and 2-hydroxy-2-methyl-1-phenyl-1-acetone (or 1173 photoinitiator), and the production and supply enterprises are as follows: basf, winning Chuangdegusai, Shenzhen Jieshiki, and the like,
the antistatic agent is one of an antistatic agent with a model number of KJD.F010 produced by Chongqing Cuanli technology company, an antistatic agent with a brand number of antistatic liquid TPL-25 or FL-40 produced by Suzhou Tepley new material company, an antistatic agent with a model number of IL-AP8 produced by Shanghai ChangZao and an antistatic agent with a model number of YL-1001 produced by Ningbo original new material;
the diluting solvent is one or two of toluene, ethyl acetate, butanone and cyclohexanone.
The definition of the solid content is: drying the UV acrylic prepolymer resin to constant weight at the temperature of 90-150 ℃, wherein the mass of the remaining solids accounts for the mass percentage of the total amount of the UV acrylic prepolymer resin; correspondingly, the UV acrylic pre-polymerized resin with the solid content of 18-30% is obtained by drying the UV acrylic pre-polymerized resin to constant weight at the temperature of 90-150 ℃, and the mass of the obtained solid is 18-30% of that of the UV acrylic pre-polymerized resin;
the invention comprises the following steps: the antistatic PET film is characterized in that the antistatic layer (1), the transparent PET film layer (2) and the antistatic layer (3) form a double-sided antistatic polyester film A, the transparent PET film layer (6) and the antistatic layer (7) form a single-sided antistatic polyester film B, and the antistatic layer (9) and the transparent PET film layer (10) form a single-sided antistatic polyester film C;
the preparation method of the double-sided antistatic polyester film A comprises the following steps: coating antistatic agent on two sides of the transparent PET film, and drying (i.e. heating treatment and solvent removal) through a drying tunnel at the temperature of 75-110 ℃ to obtain the transparent PET film; the double-sided antistatic polyester film can be manufactured by Sichuan east materials science and technology group, Inc., and the thickness of the double-sided antistatic polyester film can be 25-75 micrometers.
The preparation methods of the single-sided antistatic polyester film B and the single-sided antistatic polyester film C (both can be called single-sided antistatic polyester films) are as follows: coating antistatic agent on one side of the transparent PET film, and drying (i.e. heating treatment and solvent removal) through a drying channel at the temperature of 75-110 ℃ to obtain the transparent PET film; the single-sided antistatic polyester film can be manufactured by Sichuan east materials science and technology group, Inc., and the thickness of the single-sided antistatic polyester film can be 25-75 micrometers.
The invention comprises the following steps: the double-sided antistatic polyester film A and the release agent layer (4) form a double-sided antistatic release polyester film; the preparation method of the double-sided antistatic release polyester film comprises the following steps: coating a release agent on one surface (namely an antistatic surface) of the double-sided antistatic polyester film A, and drying (namely heating treatment and solvent removal) through a drying tunnel at the temperature of 75-110 ℃ to obtain the antistatic polyester film A; the double-sided antistatic release polyester film can be manufactured by Sichuan east materials science and technology group Limited, and the thickness of the double-sided antistatic release polyester film can be 25-75 micrometers;
the specific preparation method of the double-sided antistatic ion type polyester film comprises the following steps: coating a layer of release agent on one side (namely an antistatic side) of the double-sided antistatic polyester film A on a coating machine in a micro-concave coating mode, wherein the coating thickness is 0.3-1 mu m, so as to obtain the coated antistatic type polyester film; running the coated antistatic release polyester film at a linear speed of 35m/min, and passing the polyester film through a drying tunnel with the total length of 42m in sequence, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ to prepare the double-sided antistatic release polyester film;
the release agent is a silicon-based release agent, and the silicon-based release agent is a commercially available common silicon-containing release agent (product providing enterprises include new materials of Dow Corning, Dow, Foshan City, and the like).
The invention comprises the following steps: the specific preparation method of the double-sided antistatic polyester film A comprises the following steps: uniformly coating the antistatic agent on two sides (namely two sides) of the transparent PET film on a coating machine in a micro-concave coating mode, wherein the coating thickness is 0.3-1 mu m, and thus obtaining the coated antistatic polyester film; running the coated antistatic polyester film at a linear speed of 30m/min, and passing the coated antistatic polyester film through a drying tunnel with the total length of 42m, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ in sequence to prepare a double-sided antistatic polyester film A;
the invention comprises the following steps: the specific preparation method of the single-sided antistatic polyester film (namely the single-sided antistatic polyester film B and the single-sided antistatic polyester film C) comprises the following steps: uniformly coating the antistatic agent on one side (namely one side) of the transparent PET film on a coating machine in a micro-concave coating mode to obtain a coated antistatic polyester film, wherein the coating thickness is 0.3-1 mu m; the coated antistatic polyester film is operated at the linear speed of 30m/min, and passes through a drying tunnel with the total length of 42m, and the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ in sequence, so that the single-sided antistatic polyester film is prepared.
The invention comprises the following steps: the organic silicon adhesive layer and the single-side antistatic polyester film C form an antistatic organic silicon protective film; the preparation method of the antistatic organic silicon protective film comprises the following steps: coating an organic silicon adhesive on the antistatic surface of the single-sided antistatic polyester film C, and drying (namely heating treatment and solvent removal) the single-sided antistatic polyester film C through a drying tunnel at the temperature of 80-165 ℃ to obtain the antistatic polyester film C; the antistatic organic silicon protective film can be self-made and provided by Sichuan east material science and technology group Limited company, and can be any one of antistatic organic silicon protective films of model DCPF111-251T, DCPF111-252T, DCPF111-253T, DCPF111-501T, DCPF111-502T, DCPF111-503T, DCPF111-751T, DCPF111-752T, DCPF 111-753T;
the organic silicon adhesive can be an organic silicon adhesive provided by the Dow chemical production, and the brand (model) can be as follows: 7647, 7657, 7666, 7667, 7687, 7660, the same as above;
the organic silicon adhesive comprises organic silicon resin, a curing agent, an adhesive force additive, a catalyst and a diluting solvent; the organic silicon adhesive can be prepared by mixing raw materials which are mainly composed of 50-90 parts by mass of organic silicon resin, 0.3-1.5 parts by mass of curing agent, 0.5-1.5 parts by mass of adhesive force additive, 0.3-2 parts by mass of catalyst and 50-300 parts by mass of diluting solvent according to a mass ratio;
in the silicone adhesive: the organic silicon resin is one or two of organic silicon resins with the Dow chemical models of 7647, 7657, 7666, 7667, 7687 and 7660; the curing agent is a curing agent with the Dow chemical models of 7028 and ADD 208; the adhesion additive is a Dow chemical adhesion additive with the model number of 297; the catalyst is a platinum catalyst 4000; the diluting solvent is one or two of toluene, ethyl acetate, butanone and cyclohexanone.
The specific preparation method of the antistatic organic silicon protective film comprises the following steps: coating a layer of organic silicon adhesive on the antistatic surface of the single-sided antistatic polyester film C on a coating machine by adopting one of a micro-concave, comma scraper or slit coating mode, wherein the coating thickness is 5-15 mu m, so as to obtain a coated antistatic organic silicon protective film; and (3) running the coated antistatic organic silicon protective film at a linear speed of 30-45 m/min, and passing the coated antistatic organic silicon protective film through a drying tunnel with the total length of 42m, wherein the temperature of the first section is 80 ℃, the temperature of the second section is 120 ℃, the temperature of the third section is 160 ℃, the temperature of the fourth section is 165 ℃, the temperature of the fifth section is 150 ℃ and the temperature of the sixth section is 90 ℃ in sequence.
Another aspect of the invention is: a preparation method of a UV tackifying protective film for an OLED flexible panel is characterized by comprising the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be treated under the condition of avoiding UV light):
taking raw materials of each component according to the mixture ratio of 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 0.1-5 parts by mass of thermal curing agent, 0.1-5 parts by mass of photoinitiator, 0.5-2 parts by mass of antistatic agent and 50-200 parts by mass of diluent solvent;
adding UV acrylic pre-polymerized resin with the solid content of 18-30% into a mixing kettle, stirring (preferably stirring at the rotation speed of 150 plus 400 rpm), adding a diluent at room temperature, stirring uniformly, then (gradually) adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 20-30 min to obtain the UV acrylic adhesive;
the thermal curing agent (isocyanate) is one or a mixture of more than two of methyl diisocyanate (TDI), isophorone diisocyanate (IPDI), diphenylmethane diisocyanate (MDI) and Hexamethylene Diisocyanate (HDI) (product suppliers include Bayer Corsai, Bassfu, Japan npu, Yingchu, Vencor and Wanhua), etc.;
the photoinitiator is one or a mixture of two of 1-hydroxy-cyclohexyl benzophenone (or 184 photoinitiator) and 2-hydroxy-2-methyl-1-phenyl-1-acetone (or 1173 photoinitiator), and the production and supply enterprises are as follows: basf, winning Chuangdegusai, Shenzhen Jieshiki, etc.;
the antistatic agent is one of an antistatic agent with a model number of KJD.F010 produced by Chongqing Cuanli technology company, an antistatic agent with a brand number of antistatic liquid TPL-25 or FL-40 produced by Suzhou Tepley new material company, an antistatic agent with a model number of IL-AP8 produced by Shanghai ChangZao and an antistatic agent with a model number of YL-1001 produced by Ningbo original new material;
the diluting solvent is one or two of toluene, ethyl acetate, butanone and cyclohexanone;
b. preparing a UV tackifying protective film for the OLED flexible panel (the whole process needs to be processed under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film on a coating machine by using a comma scraper or a slit, wherein the coating thickness is 10-30 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 25-50M/min, passing through a drying tunnel with the total length of 20-45M, and sequentially passing through a first section with the temperature of 50-65 ℃, a second section with the temperature of 80-90 ℃, a third section with the temperature of 90-100 ℃, a fourth section with the temperature of 100-110 ℃, a fifth section with the temperature of 100-110 ℃ and a sixth section with the temperature of 50-60 ℃ to further polymerize and remove the solvent in the UV acrylic adhesive, thereby obtaining a semi-finished product M of the UV tackifying protective film for the OLED flexible panel;
compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.4-0.5 MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel;
and then compounding one surface of the organic silicon adhesive of the antistatic organic silicon protective film with an antistatic surface (namely the antistatic surface of the single-sided antistatic polyester film) of the UV tackifying protective film semi-finished product N for the OLED flexible panel under the pressure of a compression roller of 0.4-0.5 MPa at room temperature, and finally placing the composite material into a drying room at the temperature of 40-60 ℃ for curing for 24-72 hours to obtain the UV tackifying protective film for the OLED flexible panel.
The performance parameters of the prepared UV tackifying protective film for the OLED flexible panel are as follows: before UV irradiation, the film has low tearing voltage (tearing voltage is less than 500V) and low surface resistance (surface resistance is 10)5-109Omega range), good air release, adhesion (180 DEG peeling) less than 30gf/25mm, stable adhesion, and no peelingGood performances such as degumming of residual gum and the like, low tear film voltage (tear film voltage < 500V) and low surface resistance (surface resistance is 10) after UV irradiation5-109In the range of omega), the bonding force (180-degree stripping) is increased to more than 800gf/25mm, and the adhesive can be well attached to the bottom of the OLED flexible panel, so that the polyimide film (PI) at the bottom of the OLED flexible panel is well protected.
In another aspect of the invention: the preparation method of the single-sided antistatic polyester film in the step b comprises the following steps: coating antistatic agent on one side of the transparent PET film, and drying (i.e. heating treatment and solvent removal) through a drying channel at the temperature of 75-110 ℃ to obtain the transparent PET film; the single-sided antistatic polyester film can be manufactured by Sichuan east Material science and technology group, Inc., and the thickness of the single-sided antistatic polyester film can be 25-75 micrometers;
the antistatic agent is one of an antistatic agent with a model number of KJD.F010 produced by Chongqing Cuanli technology Co., Ltd, an antistatic agent with a model number of antistatic liquid TPL-25 or FL-40 produced by Suzhou Teplele new material Co., Ltd, an antistatic agent with a model number of IL-AP8 produced by Shanghai ChangZao and an antistatic agent with a model number of YL-1001 produced by Ningbo original new material.
In another aspect of the invention: the preparation method of the double-sided antistatic release polyester film in the step b comprises the following steps: coating a release agent on one surface (namely an antistatic surface) of the double-sided antistatic polyester film, and drying (namely heating treatment and solvent removal) the double-sided antistatic polyester film through a drying tunnel at the temperature of 75-110 ℃; the double-sided antistatic release polyester film can be manufactured by Sichuan east materials science and technology group Limited, and the thickness of the double-sided antistatic release polyester film can be 25-75 micrometers;
the release agent is a silicon-based release agent, and the silicon-based release agent is a commercially available common silicon-containing release agent (product providing enterprises comprise new materials of Dow Corning, Dow, Foshan city, and the like);
the preparation method of the double-sided antistatic polyester film comprises the following steps: coating antistatic agent on two sides of the transparent PET film, and drying (i.e. heating treatment and solvent removal) through a drying tunnel at the temperature of 75-110 ℃ to obtain the transparent PET film; the double-sided antistatic polyester film can be manufactured by Sichuan east science and technology group, Inc., and the thickness of the double-sided antistatic polyester film can be 25-75 micrometers;
the antistatic agent is one of an antistatic agent with a model number of KJD.F010 produced by Chongqing Cuanli technology Co., Ltd, an antistatic agent with a model number of antistatic liquid TPL-25 or FL-40 produced by Suzhou Teplele new material Co., Ltd, an antistatic agent with a model number of IL-AP8 produced by Shanghai ChangZao and an antistatic agent with a model number of YL-1001 produced by Ningbo original new material.
In another aspect of the invention: the preparation method of the antistatic organic silicon protective film in the step b comprises the following steps: coating an antistatic surface of the single-sided antistatic polyester film with an organic silicon adhesive, and drying (namely heating treatment and solvent removal) the single-sided antistatic polyester film through a drying tunnel at the temperature of 80-165 ℃; the antistatic silicone protective film can be made by Sichuan east material science and technology group Co., Ltd, and can be any one of antistatic silicone protective films of model DCPF111-251T, DCPF111-252T, DCPF111-253T, DCPF111-501T, DCPF111-502T, DCPF111-503T, DCPF111-751T, DCPF111-752T, DCPF 111-752T.
In another aspect of the invention: the specific preparation method of the single-sided antistatic polyester film in the step b comprises the following steps: uniformly coating the antistatic agent on one side (namely one side) of the transparent PET film on a coating machine in a micro-concave coating mode to obtain a coated antistatic polyester film, wherein the coating thickness is 0.3-1 mu m; running the coated antistatic polyester film at a linear speed of 30m/min, and passing the film through a drying tunnel with the total length of 42m in sequence, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ to prepare the single-sided antistatic polyester film;
the transparent PET film is a transparent polyethylene terephthalate film for short, and the thickness of the transparent PET film can be 25-75 micrometers;
the specific preparation method of the double-sided antistatic ionized polyester film in the step b comprises the following steps: coating a layer of release agent on one side (namely an antistatic side) of the double-sided antistatic polyester film on a coating machine in a micro-concave coating mode, wherein the coating thickness is 0.3-1 mu m, so as to obtain the coated antistatic type polyester film; running the coated antistatic release polyester film at a linear speed of 35m/min, and passing the polyester film through a drying tunnel with the total length of 42m in sequence, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ to prepare the double-sided antistatic release polyester film;
the specific preparation method of the double-sided antistatic polyester film comprises the following steps: uniformly coating the antistatic agent on two sides (namely two sides) of the transparent PET film on a coating machine in a micro-concave coating mode, wherein the coating thickness is 0.3-1 mu m, and thus obtaining the coated antistatic polyester film; running the coated antistatic polyester film at a linear speed of 30m/min, and passing the coated antistatic polyester film through a drying tunnel with the total length of 42m, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ in sequence to prepare a double-sided antistatic polyester film;
the specific preparation method of the antistatic organic silicon protective film in the step b comprises the following steps: coating a layer of organic silicon adhesive on the antistatic surface of the single-sided antistatic polyester film on a coating machine by adopting one of a micro-concave, comma scraper or slit coating mode, wherein the coating thickness is 5-15 mu m, so as to obtain a coated antistatic organic silicon protective film; and (3) running the coated antistatic organic silicon protective film at a linear speed of 30-45 m/min, and passing the coated antistatic organic silicon protective film through a drying tunnel with the total length of 42m, wherein the temperature of the first section is 80 ℃, the temperature of the second section is 120 ℃, the temperature of the third section is 160 ℃, the temperature of the fourth section is 165 ℃, the temperature of the fifth section is 150 ℃ and the temperature of the sixth section is 90 ℃ in sequence.
In the above contents: the UV irradiation is ultraviolet high-pressure mercury lamp (160W/cm), and the irradiation energy is 1200mJ/cm2Irradiating for 5 to 30 seconds(s) under the condition (1).
Compared with the prior art, the invention has the following characteristics and beneficial effects:
(1) according to the invention, UV acrylic pre-polymerized resin, a thermal curing agent, a photoinitiator, an antistatic agent and a diluting solvent are mixed to prepare a UV acrylic adhesive, the UV acrylic adhesive is uniformly coated on the surface of a single-sided antistatic polyester film by a coating process, and the UV acrylic adhesive is further polymerized and the solvent in the UV acrylic adhesive is removed by heating treatment to obtain a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding one side of a release agent of the double-sided antistatic release polyester film with one side of an adhesive of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; then compounding one side of the prepared organic silicon adhesive of the antistatic organic silicon protective film with the antistatic side of the UV tackifying protective film semi-finished product N for the OLED flexible panel at the room temperature under the pressure of a compression roller of 0.4-0.5 MPa, and finally placing the composite material into a drying room at the temperature of 40-60 ℃ for curing for 24-72 hours to obtain the UV tackifying protective film for the OLED flexible panel; the protective film has good performances of low film tearing voltage, surface resistance, good air permeability, stable bonding force, no adhesive residue degumming and the like before UV irradiation; after UV irradiation, the adhesive has low film tearing voltage and surface resistance, the adhesive force is increased, the adhesive can be well attached to the bottom of the OLED flexible panel, and the polyimide (PI for short) at the bottom of the OLED flexible panel is well protected;
(2) the antistatic agent is added into the adhesive in an internal adding mode, and is one of the antistatic agent with the model number of KJD.F010, which is provided for Chongqing Cuanli technology company, the antistatic agent with the model number of antistatic liquid TPL-25 or FL-40, which is provided for Suzhou Teplet new material company, the antistatic agent with the model number of IL-AP8, which is provided for Shanghai Zhengli technology company, and the antistatic agent with the model number of YL-1001, which is provided for Ningbo original material; the antistatic agent has good compatibility with resin, stable and durable antistatic effect, strong motion capability of molecular chains in the resin, easy movement of intermolecular protons, effective conduction and release of generated static charges, and good antistatic effect on the adhesive; meanwhile, the antistatic agent is not affected after UV irradiation;
(3) by the present invention (prepared)) The UV tackifying protective film for the OLED flexible panel has low film tearing voltage (the film tearing voltage is less than 500V) and low surface resistance (the surface resistance is 10) before UV irradiation5-109Omega range), good air exhaust, bonding force (180 DEG stripping) less than 30gf/25mm, stable bonding force, no residual glue degumming and other good performances; after UV irradiation, the film has low tear film voltage (tear film voltage < 500V) and low surface resistance (surface resistance is 10)5-109In an omega range), the adhesive force (180-degree stripping) is increased to more than 800gf/25mm, the protective film and the support film of the OLED flexible panel are combined together, after the protective film of the OLED flexible panel is attached, the protective film does not need to be stripped, the adhesive force of the protective film is increased through UV irradiation, the support film of the OLED flexible panel can be replaced, the production procedures of stripping and re-attaching in the process are reduced, the production process is optimized, the yield of products is improved, and the resource waste is reduced; and meanwhile, UV irradiation is used, so that the use of an organic solvent is reduced, and the method is environment-friendly.
(4) According to the invention, the protection film and the support film of the OLED flexible panel are organically combined together, and the product preparation process is simple, easy to operate and high in practicability.
Drawings
Fig. 1 is a schematic cross-sectional structure of a UV adhesion-promoting protective film for OLED flexible panels (manufactured) using the present invention and examples;
in the figure: 2.6, 10-polyethylene terephthalate film layer (PET film layer or transparent PET film layer), 1, 3, 7, 9-antistatic layer, 4-parting agent layer, 5-UV acrylic adhesive layer and 8-organic silicon adhesive layer.
Detailed Description
The following examples are intended to further illustrate the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims appended hereto.
Example 1:
a preparation method of a UV tackifying protective film for an OLED flexible panel comprises the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be carried out under the condition of avoiding UV light):
taking raw materials of each component according to the mixture ratio of 100 parts by mass of UV acrylic prepolymer resin, 0.1 part by mass of thermal curing agent hexamethylene diisocyanate (HDI for short), 0.3 part by mass of photoinitiator 1-hydroxy-cyclohexyl benzophenone (184 photoinitiator), 81.5 parts by mass of antistatic agent IL-AP and 100 parts by mass of diluent solvent toluene;
adding the UV acrylic pre-polymerized resin into a mixing kettle at room temperature, stirring (stirring at a rotating speed of 200 rpm), adding a diluting solvent at room temperature, stirring uniformly, then gradually adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 20min to obtain the UV acrylic adhesive;
b. preparing a UV tackifying protective film for an OLED flexible panel (the whole process needs to be carried out under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film B by using a comma scraper or a slit on a coating machine, wherein the coating thickness is 10 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 50M/min, passing through a drying tunnel with the total length of 42M, and sequentially passing through a drying tunnel with the temperature of 60 ℃ at the first section, 90 ℃ at the second section, 100 ℃ at the third section, 110 ℃ at the fourth section, 100 ℃ at the fifth section and 60 ℃ at the sixth section to further polymerize and remove the solvent in the UV acrylic adhesive, thereby obtaining a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.45MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; and then compounding one side of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic side (namely the antistatic side of the single-side antistatic polyester film B) of the UV tackifying protective film semi-finished product N for the OLED flexible panel under the pressure of a compression roller of 0.45MPa at room temperature, and finally placing the semi-finished product into a drying room at the temperature of 50 ℃ for curing for 48 hours to obtain the UV tackifying protective film for the OLED flexible panel.
Through detection: before UV irradiation of the prepared UV tackifying protective film for the OLED flexible panel, the film tearing voltage is 218V, and the surface resistance is 108Omega, preparing a sample piece with the air permeability of 50mm within 5s for the UV adhesion-promoting protective film for the OLED flexible panel, the adhesive force (180 DEG peeling) is less than 26.2gf/25mm, the 1-month adhesive force is 24.6gf/25mm, the 3-month adhesive force is 27.5gf/25mm, after UV irradiation, the film tearing voltage is 267V, and the surface resistance is 108In the range of omega, the adhesive force (180 DEG peeling) is increased to more than 1259.3gf/25mm, and the adhesive can be well attached to the bottom of the OLED flexible panel, thereby well protecting the polyimide film (PI) at the bottom of the OLED flexible panel.
UV irradiation is ultraviolet high-pressure mercury lamp (160W/cm), and irradiation energy is 1200mJ/cm2Irradiated for 10 seconds.
Example 2:
a preparation method of a UV tackifying protective film for an OLED flexible panel comprises the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be treated under the condition of avoiding UV light):
taking raw materials of 100 parts by mass of UV acrylic prepolymer resin, 0.15 part by mass of thermal curing agent hexamethylene diisocyanate (HDI for short), 0.15 part by mass of photoinitiator 1-hydroxy-cyclohexyl benzophenone (184 photoinitiator), 0.78 part by mass of antistatic agent IL-AP 81 and 100 parts by mass of diluting solvent ethyl acetate;
adding the UV acrylic pre-polymerized resin into a mixing kettle at room temperature, stirring (stirring at a rotating speed of 200 rpm), adding a diluting solvent at room temperature, stirring uniformly, then gradually adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 20min to obtain the UV acrylic adhesive;
b. preparing a UV tackifying protective film for the OLED flexible panel (the whole process needs to be processed under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film B by using a comma scraper or a slit on a coating machine, wherein the coating thickness is 10 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 45M/min, passing through a drying tunnel with the total length of 42M, and sequentially passing through a drying tunnel with the temperature of 60 ℃ at the first section, 90 ℃ at the second section, 100 ℃ at the third section, 110 ℃ at the fourth section, 100 ℃ at the fifth section and 60 ℃ at the sixth section to further polymerize and remove the solvent in the UV acrylic adhesive, thereby obtaining a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.45MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; and then compounding one side of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic side (namely the antistatic side of the single-side antistatic polyester film B) of the UV tackifying protective film semi-finished product N for the OLED flexible panel under the pressure of a compression roller of 0.45MPa at room temperature, and finally placing the semi-finished product into a drying room at the temperature of 50 ℃ for curing for 48 hours to obtain the UV tackifying protective film for the OLED flexible panel.
Through detection: before UV irradiation of the prepared UV tackifying protective film for the OLED flexible panel, the film tearing voltage is 382V, and the surface resistance is 108Omega, preparing a UV adhesion promotion protective film for OLED flexible panel, wherein the air permeability of the UV adhesion promotion protective film is within 5s and 50mm sample sheet, the adhesive force (180 DEG peeling) is 20.3gf/25mm, the 1 month adhesive force is 21.8gf/25mm, the 3 month adhesive force is 22.9gf/25mm, after UV irradiation, the film tearing voltage is 390V, and the surface resistance is 108In the range of omega, the adhesive force (180 DEG peeling) is increased to more than 1281.3gf/25mm, and the adhesive can be well attached to the bottom of the OLED flexible panel, thereby well protecting the polyimide film (PI) at the bottom of the OLED flexible panel.
UV irradiation is ultraviolet high-pressure mercury lamp (160W/cm), and irradiation energy is 1200mJ/cm2Irradiated for 10 seconds.
Example 3:
a preparation method of a UV tackifying protective film for an OLED flexible panel comprises the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be treated under the condition of avoiding UV light):
taking raw materials of each component according to the mixture ratio of 100 parts by mass of UV acrylic prepolymer resin, 0.15 part by mass of thermal curing agent hexamethylene diisocyanate (HDI for short), 0.2 part by mass of photoinitiator 1-hydroxy-cyclohexyl benzophenone (184 photoinitiator), 80.5 parts by mass of antistatic agent IL-AP and 100 parts by mass of diluent solvent toluene;
adding the UV acrylic pre-polymerized resin into a mixing kettle at room temperature, stirring (stirring at a rotating speed of 200 rpm), adding a diluting solvent at room temperature, stirring uniformly, then gradually adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 20min to obtain the UV acrylic adhesive;
b. preparing a UV tackifying protective film for the OLED flexible panel (the whole process needs to be processed under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film B by using a comma scraper or a slit on a coating machine, wherein the coating thickness is 10 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 45M/min, passing through a drying tunnel with the total length of 42M, and sequentially passing through a drying tunnel with the temperature of 60 ℃ at the first section, 90 ℃ at the second section, 100 ℃ at the third section, 110 ℃ at the fourth section, 100 ℃ at the fifth section and 60 ℃ at the sixth section to further polymerize and remove the solvent in the UV acrylic adhesive, thereby obtaining a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.45MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; and then compounding one side of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic side (namely the antistatic side of the single-side antistatic polyester film B) of the UV tackifying protective film semi-finished product N for the OLED flexible panel under the pressure of a compression roller of 0.45MPa at room temperature, and finally placing the semi-finished product into a drying room at the temperature of 50 ℃ for curing for 48 hours to obtain the UV tackifying protective film for the OLED flexible panel.
Through detection: before UV irradiation of the prepared UV tackifying protective film for the OLED flexible panel, the film tearing voltage is 437V, and the surface resistance is 109Omega, UV tackification for preparing OLED flexible panelThe protective film has outgassing property within 5s and a sample size of 50mm, adhesive force (180 DEG peeling) of 19,6gf/25mm, 1 month adhesive force of 18.7gf/25mm, and 3 month adhesive force of 22.4gf/25mm, and after UV irradiation, peeling voltage of 413V and surface resistance of 10V9In the range of omega, the adhesive force (180 DEG peeling) is increased to more than 1169.2gf/25mm, and the adhesive can be well attached to the bottom of the OLED flexible panel, thereby well protecting the polyimide film (PI) at the bottom of the OLED flexible panel.
UV irradiation is ultraviolet high-pressure mercury lamp (160W/cm), and irradiation energy is 1200mJ/cm2Irradiated for 10 seconds.
Example 4:
a preparation method of a UV tackifying protective film for an OLED flexible panel comprises the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be treated under the condition of avoiding UV light):
taking raw materials of 100 parts by mass of UV acrylic prepolymer resin, 0.25 part by mass of thermal curing agent hexamethylene diisocyanate (HDI for short), 0.2 part by mass of photoinitiator 1-hydroxy-cyclohexyl benzophenone (184 photoinitiator), 50 parts by mass of antistatic agent IL-AP 81, and 50 parts by mass of diluent solvent toluene and 50 parts by mass of ethyl acetate;
adding the UV acrylic pre-polymerized resin into a mixing kettle at room temperature, stirring (stirring at a rotating speed of 200 rpm), adding a diluting solvent at room temperature, stirring uniformly, then gradually adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 25min to obtain the UV acrylic adhesive;
b. preparing a UV tackifying protective film for the OLED flexible panel (the whole process needs to be processed under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film B by using a comma scraper or a slit on a coating machine, wherein the coating thickness is 15 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 40M/min, passing through a drying tunnel with the total length of 42M, and sequentially passing through a drying tunnel with the temperature of 60 ℃ at the first section, 90 ℃ at the second section, 100 ℃ at the third section, 110 ℃ at the fourth section, 100 ℃ at the fifth section and 60 ℃ at the sixth section to further polymerize and remove the solvent in the UV acrylic adhesive, thereby obtaining a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.45MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; and then compounding one side of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic side (namely the antistatic side of the single-side antistatic polyester film B) of the UV tackifying protective film semi-finished product N for the OLED flexible panel under the pressure of a compression roller of 0.45MPa at room temperature, and finally placing the semi-finished product into a drying room at the temperature of 50 ℃ for curing for 48 hours to obtain the UV tackifying protective film for the OLED flexible panel.
Through detection: before UV irradiation of the prepared UV tackifying protective film for the OLED flexible panel, the film tearing voltage is 337V, and the surface resistance is 108Omega, the prepared UV adhesion promotion protective film for OLED flexible panel has outgassing property within 5s and 50mm sample, adhesive force (180 DEG peeling) of 17.4gf/25mm, adhesive force at 1 month of 19.9gf/25mm, adhesive force at 3 months of 21.8gf/25mm, film tearing voltage of 347V after UV irradiation, and surface resistance of 108In the range of omega, the adhesive force (180 DEG peeling) is increased to more than 1315.8gf/25mm, and the adhesive can be well attached to the bottom of the OLED flexible panel, thereby well protecting the polyimide film (PI) at the bottom of the OLED flexible panel.
UV irradiation is ultraviolet high-pressure mercury lamp (160W/cm), and irradiation energy is 1200mJ/cm2Irradiated for 10 seconds.
Example 5:
a preparation method of a UV tackifying protective film for an OLED flexible panel comprises the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be treated under the condition of avoiding UV light):
taking raw materials of 100 parts by mass of UV acrylic prepolymer resin, 0.25 part by mass of thermal curing agent hexamethylene diisocyanate (HDI for short), 0.15 part by mass of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-acetone (1173 photoinitiator), 0.5 part by mass of antistatic agent KJD.F010and 100 parts by mass of diluent solvent toluene;
adding the UV acrylic pre-polymerized resin into a mixing kettle at room temperature, stirring (stirring at a rotating speed of 300 rpm), adding a diluting solvent at room temperature, stirring uniformly, then gradually adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 25min to obtain the UV acrylic adhesive;
b. preparing a UV tackifying protective film for the OLED flexible panel (the whole process needs to be processed under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film B by using a comma scraper or a slit on a coating machine, wherein the coating thickness is 15 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 40M/min, passing through a drying tunnel with the total length of 42M, and sequentially passing through a drying tunnel with the temperature of 60 ℃ at the first section, 90 ℃ at the second section, 100 ℃ at the third section, 110 ℃ at the fourth section, 100 ℃ at the fifth section and 60 ℃ at the sixth section to further polymerize and remove the solvent in the UV acrylic adhesive, thereby obtaining a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.45MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; and then compounding one side of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic side (namely the antistatic side of the single-side antistatic polyester film B) of the UV tackifying protective film semi-finished product N for the OLED flexible panel under the pressure of a compression roller of 0.45MPa at room temperature, and finally placing the semi-finished product into a drying room at the temperature of 50 ℃ for curing for 48 hours to obtain the UV tackifying protective film for the OLED flexible panel.
Through detection: before UV irradiation of the prepared UV tackifying protective film for the OLED flexible panel, the film tearing voltage is 410V, and the surface resistance is 109Omega, the prepared UV adhesion promotion protective film for OLED flexible panel has outgassing property within 5s and 50mm sample, adhesive force (180 DEG peeling) of 22.6gf/25mm, adhesive force of 24.1gf/25mm in 1 month, adhesive force of 25.9gf/25mm in 3 months, and UV irradiationAfter that, the film tearing voltage is 455V, and the surface resistance is 109In the range of omega, the adhesive force (180 DEG peeling) is increased to more than 1367.1gf/25mm, and the adhesive can be well attached to the bottom of the OLED flexible panel, thereby well protecting the polyimide film (PI) at the bottom of the OLED flexible panel.
UV irradiation is ultraviolet high-pressure mercury lamp (160W/cm), and irradiation energy is 1200mJ/cm2Irradiated for 10 seconds.
Example 6:
a preparation method of a UV tackifying protective film for an OLED flexible panel comprises the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be treated under the condition of avoiding UV light):
taking raw materials of 100 parts by mass of UV acrylic prepolymer resin, 0.3 part by mass of thermal curing agent hexamethylene diisocyanate (HDI for short), 0.25 part by mass of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-acetone (1173 photoinitiator), 0.1 part by mass of antistatic agent KJD.F0101 and 100 parts by mass of diluent solvent toluene;
adding the UV acrylic pre-polymerized resin into a mixing kettle at room temperature, stirring (stirring at a rotating speed of 300 rpm), adding a diluting solvent at room temperature, stirring uniformly, then gradually adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 25min to obtain the UV acrylic adhesive;
b. preparing a UV tackifying protective film for the OLED flexible panel (the whole process needs to be processed under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film B by using a comma scraper or a slit on a coating machine, wherein the coating thickness is 15 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 40M/min, passing through a drying tunnel with the total length of 42M, and sequentially passing through a drying tunnel with the temperature of 60 ℃ at the first section, 90 ℃ at the second section, 100 ℃ at the third section, 110 ℃ at the fourth section, 100 ℃ at the fifth section and 60 ℃ at the sixth section to further polymerize and remove the solvent in the UV acrylic adhesive, thereby obtaining a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.45MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; and then compounding one side of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic side (namely the antistatic side of the single-side antistatic polyester film B) of the UV tackifying protective film semi-finished product N for the OLED flexible panel under the pressure of a compression roller of 0.45MPa at room temperature, and finally placing the semi-finished product into a drying room at the temperature of 50 ℃ for curing for 48 hours to obtain the UV tackifying protective film for the OLED flexible panel.
Through detection: before UV irradiation of the UV tackifying protective film for preparing the OLED flexible panel, the film tearing voltage is 299V, and the surface resistance is 108Omega, preparing a UV adhesion promotion protective film for OLED flexible panel, wherein the air permeability of the UV adhesion promotion protective film is within 5s and 50mm sample sheet, the adhesive force (180 DEG peeling) is 15.3gf/25mm, the 1 month adhesive force is 16.2gf/25mm, the 3 month adhesive force is 16.9gf/25mm, after UV irradiation, the film tearing voltage is 316V, and the surface resistance is 108In the range of omega, the adhesive force (180 DEG peeling) is increased to more than 1086.7gf/25mm, and the adhesive can be well attached to the bottom of the OLED flexible panel, thereby well protecting the polyimide film (PI) at the bottom of the OLED flexible panel.
UV irradiation is ultraviolet high-pressure mercury lamp (160W/cm), and irradiation energy is 1200mJ/cm2Irradiated for 12 seconds.
Example 7:
a preparation method of a UV tackifying protective film for an OLED flexible panel comprises the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be treated under the condition of avoiding UV light):
taking raw materials of 100 parts by mass of UV acrylic prepolymer resin, 0.3 part by mass of thermal curing agent hexamethylene diisocyanate (HDI for short), 0.3 part by mass of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-acetone (1173 photoinitiator), 0.5 part by mass of antistatic agent KJD.F0101.5, 50 parts by mass of diluent solvent toluene and 50 parts by mass of ethyl acetate;
adding the UV acrylic pre-polymerized resin into a mixing kettle at room temperature, stirring (stirring at a rotating speed of 300 rpm), adding a diluting solvent at room temperature, stirring uniformly, then gradually adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 25min to obtain the UV acrylic adhesive;
b. preparing a UV tackifying protective film for the OLED flexible panel (the whole process needs to be processed under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film B by using a comma scraper or a slit on a coating machine, wherein the coating thickness is 17 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 40M/min, passing through a drying tunnel with the total length of 42M, and sequentially passing through a drying tunnel with the temperature of 60 ℃ at the first section, 90 ℃ at the second section, 100 ℃ at the third section, 110 ℃ at the fourth section, 100 ℃ at the fifth section and 60 ℃ at the sixth section to further polymerize and remove the solvent in the UV acrylic adhesive, thereby obtaining a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.45MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; and then compounding one side of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic side (namely the antistatic side of the single-side antistatic polyester film B) of the UV tackifying protective film semi-finished product N for the OLED flexible panel under the pressure of a compression roller of 0.45MPa at room temperature, and finally placing the semi-finished product into a drying room at the temperature of 50 ℃ for curing for 48 hours to obtain the UV tackifying protective film for the OLED flexible panel.
Through detection: before UV irradiation of the prepared UV tackifying protective film for the OLED flexible panel, the film tearing voltage is 258V, and the surface resistance is 108Omega, preparing a UV adhesion promotion protective film for OLED flexible panel, wherein the air permeability of the UV adhesion promotion protective film is within 5s and 50mm sample sheet, the adhesive force (180 DEG peeling) is 15.7gf/25mm, the 1 month adhesive force is 14.9gf/25mm, the 3 month adhesive force is 16.3gf/25mm, after UV irradiation, the film tearing voltage is 322V, and the surface resistance is 108In the range of omega, the adhesive force (180 DEG peeling) is increased to more than 1370.2gf/25mm, and the flexible OLED adhesive can be well attached to the OLEDThe bottom of the panel plays a good role in protecting a polyimide film (PI) at the bottom of the OLED flexible panel.
UV irradiation is ultraviolet high-pressure mercury lamp (160W/cm), and irradiation energy is 1200mJ/cm2Irradiated for 12 seconds.
Example 8:
a preparation method of a UV tackifying protective film for an OLED flexible panel comprises the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be treated under the condition of avoiding UV light):
taking raw materials of 100 parts by mass of UV acrylic prepolymer resin, 1 part by mass of thermal curing agent hexamethylene diisocyanate (HDI for short), 0.25 part by mass of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-acetone (1173 photoinitiator), 1.5 parts by mass of antistatic agent KJD.F0101.5 and 100 parts by mass of diluent solvent toluene;
adding the UV acrylic pre-polymerized resin into a mixing kettle at room temperature, stirring (stirring at a rotating speed of 300 rpm), adding a diluting solvent at room temperature, stirring uniformly, then gradually adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 25min to obtain the UV acrylic adhesive;
b. preparing a UV tackifying protective film for the OLED flexible panel (the whole process needs to be processed under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film B by using a comma scraper or a slit on a coating machine, wherein the coating thickness is 17 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 40M/min, passing through a drying tunnel with the total length of 42M, and sequentially passing through a drying tunnel with the temperature of 60 ℃ at the first section, 90 ℃ at the second section, 100 ℃ at the third section, 110 ℃ at the fourth section, 100 ℃ at the fifth section and 60 ℃ at the sixth section to further polymerize and remove the solvent in the UV acrylic adhesive, thereby obtaining a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.45MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; and then compounding one side of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic side (namely the antistatic side of the single-side antistatic polyester film B) of the UV tackifying protective film semi-finished product N for the OLED flexible panel under the pressure of a compression roller of 0.45MPa at room temperature, and finally placing the semi-finished product into a drying room at the temperature of 50 ℃ for curing for 48 hours to obtain the UV tackifying protective film for the OLED flexible panel.
Through detection: before UV irradiation of the prepared UV tackifying protective film for the OLED flexible panel, the film tearing voltage is 337V, and the surface resistance is 109Omega, preparing a UV adhesion promotion protective film for OLED flexible panel, wherein the air permeability of the UV adhesion promotion protective film is within 5s and 50mm sample sheet, the adhesive force (180 DEG peeling) is 12.1gf/25mm, the 1 month adhesive force is 12.9gf/25mm, the 3 month adhesive force is 13.5gf/25mm, after UV irradiation, the film tearing voltage is 316V, and the surface resistance is 109In the range of omega, the adhesive force (180 DEG peeling) is increased to more than 1477.6gf/25mm, and the adhesive can be well attached to the bottom of the OLED flexible panel, thereby well protecting the polyimide film (PI) at the bottom of the OLED flexible panel.
UV irradiation is ultraviolet high-pressure mercury lamp (160W/cm), and irradiation energy is 1200mJ/cm2Irradiated for 12 seconds.
Example 9:
a preparation method of a UV tackifying protective film for an OLED flexible panel comprises the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be treated under the condition of avoiding UV light):
taking raw materials of 100 parts by mass of UV acrylic prepolymer resin, 1 part by mass of thermal curing agent hexamethylene diisocyanate (HDI for short), 0.4 part by mass of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-acetone (1173 photoinitiator), 1.5 parts by mass of antistatic agent KJD.F0101.5 and 100 parts by mass of diluting solvent ethyl acetate;
adding the UV acrylic pre-polymerized resin into a mixing kettle at room temperature, stirring (stirring at a rotating speed of 300 rpm), adding a diluting solvent at room temperature, stirring uniformly, then gradually adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 25min to obtain the UV acrylic adhesive;
b. preparing a UV tackifying protective film for the OLED flexible panel (the whole process needs to be processed under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film B by using a comma scraper or a slit on a coating machine, wherein the coating thickness is 20 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 40M/min, passing through a drying tunnel with the total length of 42M, and sequentially passing through a drying tunnel with the temperature of 60 ℃ at the first section, 90 ℃ at the second section, 100 ℃ at the third section, 110 ℃ at the fourth section, 100 ℃ at the fifth section and 60 ℃ at the sixth section to further polymerize and remove the solvent in the UV acrylic adhesive, thereby obtaining a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.45MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; and then compounding one side of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic side (namely the antistatic side of the single-side antistatic polyester film B) of the UV tackifying protective film semi-finished product N for the OLED flexible panel under the pressure of a compression roller of 0.45MPa at room temperature, and finally placing the semi-finished product into a drying room at the temperature of 50 ℃ for curing for 48 hours to obtain the UV tackifying protective film for the OLED flexible panel.
Through detection: before UV irradiation of the prepared UV tackifying protective film for the OLED flexible panel, the film tearing voltage is 312V, and the surface resistance is 109Omega, preparing a UV adhesion promotion protective film for OLED flexible panel, wherein the air permeability of the UV adhesion promotion protective film is within 5s and 50mm, the adhesive force (180 DEG peeling) is 13.4gf/25mm, the 1-month adhesive force is 13.9gf/25mm, the 3-month adhesive force is 15.2gf/25mm, after UV irradiation, the film tearing voltage is 289V, and the surface resistance is 109In the range of omega, the adhesive force (180 DEG peeling) is increased to more than 1257.4gf/25mm, and the adhesive can be well attached to the bottom of the OLED flexible panel, thereby well protecting the polyimide film (PI) at the bottom of the OLED flexible panel.
UV irradiation is ultraviolet high-pressure mercury lamp (16)0W/cm), the irradiation energy is 1200mJ/cm2Under the conditions of (1) for 15 seconds.
Example 10: referring to the drawings:
a UV tackifying protective film for an OLED flexible panel is composed of an antistatic layer 1, a transparent PET film layer 2, an antistatic layer 3, a release agent layer 4, a UV acrylic adhesive layer 5, a transparent PET film layer 6, an antistatic layer 7, an organic silicon adhesive layer 8, an antistatic layer 9 and a transparent PET film layer 10 which are sequentially compounded; the transparent PET film layer (namely, a transparent PET film, the same as in the following embodiments 11-17) is a short name for polyethylene terephthalate film layer, and the thicknesses of the transparent PET film layer 2, the transparent PET film layer 6 and the transparent PET film layer 10 are all 25 micrometers;
the UV acrylic adhesive layer 5 is composed of a UV acrylic adhesive that is dried (i.e., heated, solvent-removed, and dried under UV light, as in the following examples 11 to 17), and the UV acrylic adhesive is composed of 100 parts by mass of a UV acrylic pre-polymerized resin having a solid content of 18 to 30%, 1 part by mass of a thermal curing agent, 0.5 part by mass of a photoinitiator, 0.5 part by mass of an antistatic agent, and 50 parts by mass of a diluent solvent.
The organic silicon adhesive layer and the single-side antistatic polyester film C form an antistatic organic silicon protective film; the antistatic organic silicon protective film is self-made by Sichuan east material science and technology group Limited company and is one of the self-made models DCPF111-251T, DCPF111-252T, DCPF111-253T, DCPF111-501T, DCPF 111-111 502T, DCPF111-503T, DCPF111-751T, DCPF111-752T or DCPF 111-753T.
Example 11: referring to the drawings:
a UV tackifying protective film for an OLED flexible panel is composed of an antistatic layer 1, a transparent PET film layer 2, an antistatic layer 3, a release agent layer 4, a UV acrylic adhesive layer 5, a transparent PET film layer 6, an antistatic layer 7, an organic silicon adhesive layer 8, an antistatic layer 9 and a transparent PET film layer 10 which are sequentially compounded; the transparent PET film layer is a polyethylene terephthalate film layer for short, the thicknesses of the transparent PET film layer 2 and the transparent PET film layer 6 are both 25 micrometers, and the thickness of the transparent PET film layer 10 is 50 micrometers;
the UV acrylic adhesive layer 5 is composed of a dried UV acrylic adhesive, and the UV acrylic adhesive is formed by mixing 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 0.5 part by mass of a thermal curing agent, 1 part by mass of a photoinitiator, 0.5 part by mass of an antistatic agent and 100 parts by mass of a diluting solvent.
The organic silicon adhesive layer and the single-side antistatic polyester film C form an antistatic organic silicon protective film; the antistatic organic silicon protective film is manufactured by Sichuan Dong material science and technology group, Inc., and has the model number of DCPF 111-501T.
Example 12: referring to the drawings:
a UV tackifying protective film for an OLED flexible panel is composed of an antistatic layer 1, a transparent PET film layer 2, an antistatic layer 3, a release agent layer 4, a UV acrylic adhesive layer 5, a transparent PET film layer 6, an antistatic layer 7, an organic silicon adhesive layer 8, an antistatic layer 9 and a transparent PET film layer 10 which are sequentially compounded; the transparent PET film layer is a polyethylene terephthalate film layer for short, the thicknesses of the transparent PET film layer 2 and the transparent PET film layer 6 are both 50 micrometers, and the thickness of the transparent PET film layer 10 is 25 micrometers;
the UV acrylic adhesive layer 5 is composed of a dried UV acrylic adhesive, and the UV acrylic adhesive is formed by mixing 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 0.8 part by mass of a thermal curing agent, 1.5 parts by mass of a photoinitiator, 0.7 part by mass of an antistatic agent and 100 parts by mass of a diluting solvent.
The organic silicon adhesive layer and the single-side antistatic polyester film C form an antistatic organic silicon protective film; the antistatic organic silicon protective film is manufactured by Sichuan Dong material science and technology group, Inc., and has the model number of DCPF 111-252T.
Example 13: referring to the drawings:
a UV tackifying protective film for an OLED flexible panel is composed of an antistatic layer 1, a transparent PET film layer 2, an antistatic layer 3, a release agent layer 4, a UV acrylic adhesive layer 5, a transparent PET film layer 6, an antistatic layer 7, an organic silicon adhesive layer 8, an antistatic layer 9 and a transparent PET film layer 10 which are sequentially compounded; the transparent PET film layer is a polyethylene terephthalate film layer for short, and the thicknesses of the transparent PET film layer 2, the transparent PET film layer 6 and the transparent PET film layer 10 are all 50 micrometers;
the UV acrylic adhesive layer 5 is composed of a dried UV acrylic adhesive, and the UV acrylic adhesive is formed by mixing 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 1 part by mass of a thermal curing agent, 1.2 parts by mass of a photoinitiator, 1.2 parts by mass of an antistatic agent and 100 parts by mass of a diluting solvent.
The organic silicon adhesive layer and the single-side antistatic polyester film C form an antistatic organic silicon protective film; the antistatic silicone protective film can be manufactured by Sichuan Dong material science and technology group, Inc., with the model number of DCPF 111-501T.
Example 14: referring to the drawings:
a UV tackifying protective film for an OLED flexible panel is composed of an antistatic layer 1, a transparent PET film layer 2, an antistatic layer 3, a release agent layer 4, a UV acrylic adhesive layer 5, a transparent PET film layer 6, an antistatic layer 7, an organic silicon adhesive layer 8, an antistatic layer 9 and a transparent PET film layer 10 which are sequentially compounded; the transparent PET film layer is a polyethylene terephthalate film layer for short, the thicknesses of the transparent PET film layer 2 and the transparent PET film layer 6 are 75 micrometers, and the thickness of the transparent PET film layer 10 is 25 micrometers;
the UV acrylic adhesive layer 5 is composed of a dried UV acrylic adhesive, and the UV acrylic adhesive is formed by mixing 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 0.8 part by mass of a thermal curing agent, 1 part by mass of a photoinitiator, 1.5 parts by mass of an antistatic agent and 50 parts by mass of a diluting solvent.
The organic silicon adhesive layer and the single-side antistatic polyester film C form an antistatic organic silicon protective film; the antistatic organic silicon protective film is manufactured by Sichuan Dong material science and technology group, Inc., and has the model number of DCPF 111-251T.
Example 15: referring to the drawings:
a UV tackifying protective film for an OLED flexible panel is composed of an antistatic layer 1, a transparent PET film layer 2, an antistatic layer 3, a release agent layer 4, a UV acrylic adhesive layer 5, a transparent PET film layer 6, an antistatic layer 7, an organic silicon adhesive layer 8, an antistatic layer 9 and a transparent PET film layer 10 which are sequentially compounded; the transparent PET film layer is a polyethylene terephthalate film layer for short, the thicknesses of the transparent PET film layer 2 and the transparent PET film layer 6 are 75 micrometers, and the thickness of the transparent PET film layer 10 is 50 micrometers;
the UV acrylic adhesive layer 5 is composed of a dried UV acrylic adhesive, and the UV acrylic adhesive is formed by mixing 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 2 parts by mass of a thermal curing agent, 1 part by mass of a photoinitiator, 1.5 parts by mass of an antistatic agent and 100 parts by mass of a diluent solvent.
The organic silicon adhesive layer and the single-side antistatic polyester film C form an antistatic organic silicon protective film; the antistatic organic silicon protective film is manufactured by Sichuan Dong material science and technology group, Inc., and has the model number of DCPF 111-501T.
Example 16: referring to the drawings:
a UV tackifying protective film for an OLED flexible panel is composed of an antistatic layer 1, a transparent PET film layer 2, an antistatic layer 3, a release agent layer 4, a UV acrylic adhesive layer 5, a transparent PET film layer 6, an antistatic layer 7, an organic silicon adhesive layer 8, an antistatic layer 9 and a transparent PET film layer 10 which are sequentially compounded; the transparent PET film layer is a polyethylene terephthalate film layer for short, the thicknesses of the transparent PET film layer 2 and the transparent PET film layer 6 are 50 micrometers, and the thickness of the transparent PET film layer 10 is 75 micrometers;
the UV acrylic adhesive layer 5 is composed of a dried UV acrylic adhesive, and the UV acrylic adhesive is formed by mixing 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 1.5 parts by mass of a thermal curing agent, 1.2 parts by mass of a photoinitiator, 0.7 part by mass of an antistatic agent and 100 parts by mass of a diluting solvent.
The organic silicon adhesive layer and the single-side antistatic polyester film C form an antistatic organic silicon protective film; the antistatic organic silicon protective film is manufactured by Sichuan Dong material science and technology group, Inc., and has the model number of DCPF 111-751T.
Example 17: referring to the drawings:
a UV tackifying protective film for an OLED flexible panel is composed of an antistatic layer 1, a transparent PET film layer 2, an antistatic layer 3, a release agent layer 4, a UV acrylic adhesive layer 5, a transparent PET film layer 6, an antistatic layer 7, an organic silicon adhesive layer 8, an antistatic layer 9 and a transparent PET film layer 10 which are sequentially compounded; the transparent PET film layer is a polyethylene terephthalate film layer for short, and the thicknesses of the transparent PET film layer 2, the transparent PET film layer 6 and the transparent PET film layer 10 are all 75 micrometers;
the UV acrylic adhesive layer 5 is composed of a dried UV acrylic adhesive, and the UV acrylic adhesive is formed by mixing 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 2.5 parts by mass of a thermal curing agent, 1.8 parts by mass of a photoinitiator, 1.3 parts by mass of an antistatic agent and 100 parts by mass of a diluting solvent.
The organic silicon adhesive layer and the single-side antistatic polyester film C form an antistatic organic silicon protective film; the antistatic organic silicon protective film is manufactured by Sichuan Dong material science and technology group, Inc., and has the model number of DCPF 111-752T.
Example 18:
a UV tackifying protective film for an OLED flexible panel is composed of an antistatic layer 1, a transparent PET film layer 2, an antistatic layer 3, a release agent layer 4, a UV acrylic adhesive layer 5, a transparent PET film layer 6, an antistatic layer 7, an organic silicon adhesive layer 8, an antistatic layer 9 and a transparent PET film layer 10 which are sequentially compounded;
the transparent PET film layer (namely the transparent PET film) is a polyethylene terephthalate film layer for short, and the thicknesses of the transparent PET film layer 2, the transparent PET film layer 6 and the transparent PET film layer 10 are all 25 micrometers;
the UV acrylic adhesive layer 5 is composed of a dried UV acrylic adhesive, and the UV acrylic adhesive is formed by mixing 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 0.1 part by mass of a thermal curing agent, 0.1 part by mass of a photoinitiator, 0.5 part by mass of an antistatic agent and 50 parts by mass of a diluting solvent.
Example 19:
a UV tackifying protective film for an OLED flexible panel is composed of an antistatic layer 1, a transparent PET film layer 2, an antistatic layer 3, a release agent layer 4, a UV acrylic adhesive layer 5, a transparent PET film layer 6, an antistatic layer 7, an organic silicon adhesive layer 8, an antistatic layer 9 and a transparent PET film layer 10 which are sequentially compounded;
the transparent PET film layer (namely the transparent PET film) is a polyethylene terephthalate film layer for short, and the thicknesses of the transparent PET film layer 2, the transparent PET film layer 6 and the transparent PET film layer 10 are all 75 micrometers;
the UV acrylic adhesive layer 5 is composed of a dried UV acrylic adhesive, and the UV acrylic adhesive is formed by mixing 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 5 parts by mass of a thermal curing agent, 5 parts by mass of a photoinitiator, 2 parts by mass of an antistatic agent and 200 parts by mass of a diluting solvent.
Example 20:
a UV tackifying protective film for an OLED flexible panel is composed of an antistatic layer 1, a transparent PET film layer 2, an antistatic layer 3, a release agent layer 4, a UV acrylic adhesive layer 5, a transparent PET film layer 6, an antistatic layer 7, an organic silicon adhesive layer 8, an antistatic layer 9 and a transparent PET film layer 10 which are sequentially compounded;
the transparent PET film layer (namely the transparent PET film) is a polyethylene terephthalate film layer for short, and the thicknesses of the transparent PET film layer 2, the transparent PET film layer 6 and the transparent PET film layer 10 are all 50 micrometers;
the UV acrylic adhesive layer 5 is composed of a dried UV acrylic adhesive, and the UV acrylic adhesive is formed by mixing 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 2.5 parts by mass of a thermal curing agent, 2.5 parts by mass of a photoinitiator, 1.2 parts by mass of an antistatic agent and 130 parts by mass of a diluting solvent.
In the above embodiments 18 to 20: the transparent PET film layer (namely the transparent PET film) is a polyethylene terephthalate film layer for short, and the thicknesses of the transparent PET film layer 2, the transparent PET film layer 6 and the transparent PET film layer 10 can be any one of the thicknesses of 25-75 micrometers.
In the above embodiments 10 to 20: the UV acrylic pre-polymerized resin is acrylic pre-polymerized resin, and the product production providing enterprises and brands (models) comprise: HT-6537CV or HT-6537CV-3 of Shenzhen Gillendoe, HS-1058V of Guangzhou Huisheng technology, and the like; in the above embodiments 10 to 20: the thermal curing agent (isocyanate) is one or a mixture of more than two of methyl diisocyanate (TDI), isophorone diisocyanate (IPDI), diphenylmethane diisocyanate (MDI) and Hexamethylene Diisocyanate (HDI) (product suppliers include Bayer Corsai, Bassfu, Japan npu, Yingchu, Vencor and Wanhua), etc.; the photoinitiator is one or a mixture of two of 1-hydroxy-cyclohexyl benzophenone (or 184 photoinitiator) and 2-hydroxy-2-methyl-1-phenyl-1-acetone (or 1173 photoinitiator), and the production and supply enterprises are as follows: the antistatic agent is one of an antistatic agent with a model number of KJD.F010 produced by Chongqing Cunli technology Co., Ltd, an antistatic agent with a model number of antistatic liquid TPL-25 or FL-40 produced by Suzhou Teplet new material Co., Ltd, a antistatic agent with a model number of IL-AP8 produced by Shanghai Chang Zheng and a model number YL-1001 antistatic agent produced by Ningbo original new material; the diluting solvent is one or two of toluene, ethyl acetate, butanone and cyclohexanone;
in the above embodiments 10 to 20: the antistatic polyester film comprises an antistatic layer 1, a transparent PET film layer 2 and an antistatic layer 3, wherein the antistatic layer 1, the transparent PET film layer 2 and the antistatic layer 3 form a double-sided antistatic polyester film A, the transparent PET film layer 6 and the antistatic layer 7 form a single-sided antistatic polyester film B, and the antistatic layer 9 and the transparent PET film layer 10 form a single-sided antistatic polyester film C;
the preparation method of the double-sided antistatic polyester film A comprises the following steps: coating antistatic agent on two sides of the transparent PET film, and drying (i.e. heating treatment and solvent removal) through a drying tunnel at the temperature of 75-110 ℃ to obtain the transparent PET film; the double-sided antistatic polyester film can be manufactured by Sichuan east science and technology group, Inc., and the thickness of the double-sided antistatic polyester film can be 25-75 micrometers;
the preparation methods of the single-sided antistatic polyester film B and the single-sided antistatic polyester film C (both are called single-sided antistatic polyester films) are as follows: coating antistatic agent on one side of the transparent PET film, and drying (i.e. heating treatment and solvent removal) through a drying channel at the temperature of 75-110 ℃ to obtain the transparent PET film; the single-sided antistatic polyester film can be manufactured by Sichuan east materials science and technology group, Inc., and the thickness of the single-sided antistatic polyester film can be 25-75 micrometers.
In the above embodiments 10 to 20: the double-sided antistatic polyester film A and the release agent layer 4 form a double-sided antistatic ionized polyester film; the preparation method of the double-sided antistatic release polyester film comprises the following steps: coating a release agent on one surface (namely an antistatic surface) of the double-sided antistatic polyester film A, and drying (namely heating treatment and solvent removal) through a drying tunnel at the temperature of 75-110 ℃ to obtain the antistatic polyester film A; the double-sided antistatic release polyester film can be manufactured by Sichuan east materials science and technology group Limited, and the thickness of the double-sided antistatic release polyester film can be 25-75 micrometers;
the specific preparation method of the double-sided antistatic ion type polyester film comprises the following steps: coating a layer of release agent on one side (namely an antistatic side) of the double-sided antistatic polyester film A on a coating machine in a micro-concave coating mode, wherein the coating thickness is 0.3-1 mu m, so as to obtain the coated antistatic type polyester film; running the coated antistatic release polyester film at a linear speed of 35m/min, and passing the polyester film through a drying tunnel with the total length of 42m in sequence, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ to prepare the double-sided antistatic release polyester film;
the release agent is a silicon-based release agent, and the silicon-based release agent is a commercially available common silicon-containing release agent (product providing enterprises include new materials of Dow Corning, Dow, Foshan City, and the like).
In the above embodiments 10 to 20: the specific preparation method of the double-sided antistatic polyester film A comprises the following steps: uniformly coating the antistatic agent on two sides (namely two sides) of the transparent PET film on a coating machine in a micro-concave coating mode, wherein the coating thickness is 0.3-1 mu m, and thus obtaining the coated antistatic polyester film; running the coated antistatic polyester film at a linear speed of 30m/min, and passing the coated antistatic polyester film through a drying tunnel with the total length of 42m, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ in sequence to prepare a double-sided antistatic polyester film A;
the specific preparation method of the single-sided antistatic polyester film (namely the single-sided antistatic polyester film B and the single-sided antistatic polyester film C) comprises the following steps: uniformly coating the antistatic agent on one side (namely one side) of the transparent PET film on a coating machine in a micro-concave coating mode to obtain a coated antistatic polyester film, wherein the coating thickness is 0.3-1 mu m; the coated antistatic polyester film is operated at the linear speed of 30m/min, and passes through a drying tunnel with the total length of 42m, and the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ in sequence, so that the single-sided antistatic polyester film is prepared.
In the above embodiments 18 to 20: the organic silicon adhesive layer and the single-side antistatic polyester film C form an antistatic organic silicon protective film; the preparation method of the antistatic organic silicon protective film comprises the following steps: coating an organic silicon adhesive on the antistatic surface of the single-sided antistatic polyester film C, and drying (namely heating treatment and solvent removal) the single-sided antistatic polyester film C through a drying tunnel at the temperature of 80-165 ℃ to obtain the antistatic polyester film C; the antistatic silicone protective film can be made by Sichuan east material science and technology group Co., Ltd, and can be any one of antistatic silicone protective films of model DCPF111-251T, DCPF111-252T, DCPF111-253T, DCPF111-501T, DCPF111-502T, DCPF111-503T, DCPF111-751T, DCPF111-752T, DCPF 111-752T.
Example 21:
a preparation method of a UV tackifying protective film for an OLED flexible panel comprises the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be treated under the condition of avoiding UV light):
taking raw materials of each component according to the mixture ratio of 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 0.1 part by mass of thermal curing agent, 0.1 part by mass of photoinitiator, 0.5 part by mass of antistatic agent and 50 parts by mass of diluent solvent;
adding UV acrylic pre-polymerized resin with the solid content of 18-30% into a mixing kettle, stirring (stirring at the rotating speed of 150 rpm), adding a diluting solvent at room temperature, stirring uniformly, then (gradually) adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 20min to obtain a UV acrylic adhesive;
b. preparing a UV tackifying protective film for the OLED flexible panel (the whole process needs to be processed under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film on a coating machine by using a comma scraper or a slit, wherein the coating thickness is 10 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 25M/min, passing through a drying tunnel with the total length of 20M, sequentially passing through a drying tunnel with the temperature of 50 ℃ at the first section, 80 ℃ at the second section, 90 ℃ at the third section, 100 ℃ at the fourth section, 100 ℃ at the fifth section and 50 ℃ at the sixth section, further polymerizing and removing a solvent in the UV acrylic adhesive to obtain a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.4MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; and then compounding one surface of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic surface (namely the antistatic surface of the single-sided antistatic polyester film B) of the UV tackifying protective film semi-finished product N for the OLED flexible panel under the pressure of a compression roller of 0.4MPa at room temperature, and finally placing the semi-finished product into a drying room at the temperature of 40 ℃ for curing for 72 hours to obtain the UV tackifying protective film for the OLED flexible panel.
Example 22:
a preparation method of a UV tackifying protective film for an OLED flexible panel comprises the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be treated under the condition of avoiding UV light):
taking raw materials of 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 5 parts by mass of a thermal curing agent, 5 parts by mass of a photoinitiator, 2 parts by mass of an antistatic agent and 200 parts by mass of a diluting solvent;
adding UV acrylic pre-polymerized resin with the solid content of 18-30% into a mixing kettle, stirring (stirring at the rotating speed of 400 rpm), adding a diluting solvent at room temperature, stirring uniformly, then (gradually) adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 30min to obtain the UV acrylic adhesive;
b. preparing a UV tackifying protective film for the OLED flexible panel (the whole process needs to be processed under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film on a coating machine by using a comma scraper or a slit, wherein the coating thickness is 30 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 50M/min, passing through a drying tunnel with the total length of 45M, sequentially passing through a drying tunnel with the temperature of 65 ℃ at the first section, 90 ℃ at the second section, 100 ℃ at the third section, 110 ℃ at the fourth section, 110 ℃ at the fifth section and 60 ℃ at the sixth section, and further polymerizing and removing a solvent in the UV acrylic adhesive to obtain a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.5MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; and then compounding one surface of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic surface (namely the antistatic surface of the single-sided antistatic polyester film) of the UV tackifying protective film semi-finished product N for the OLED flexible panel at the room temperature under the pressure of a compression roller of 0.5MPa, and finally placing the semi-finished product into a drying room at the temperature of 60 ℃ for curing for 24 hours to obtain the UV tackifying protective film for the OLED flexible panel.
Example 23:
a preparation method of a UV tackifying protective film for an OLED flexible panel comprises the following steps:
a. preparing a UV acrylic adhesive (the whole process needs to be treated under the condition of avoiding UV light):
taking raw materials of each component according to the mixture ratio of 100 parts by mass of UV acrylic pre-polymerized resin with the solid content of 18-30%, 2.6 parts by mass of thermal curing agent, 2.5 parts by mass of photoinitiator, 1.25 parts by mass of antistatic agent and 125 parts by mass of diluent solvent;
adding UV acrylic pre-polymerized resin with the solid content of 18-30% into a mixing kettle, stirring (stirring at the rotating speed of 320 rpm), adding a diluting solvent at room temperature, stirring uniformly, then (gradually) adding a thermal curing agent, a photoinitiator and an antistatic agent, and stirring for 25min to obtain the UV acrylic adhesive;
b. preparing a UV tackifying protective film for the OLED flexible panel (the whole process needs to be processed under the condition of avoiding UV light):
uniformly coating the UV acrylic adhesive (prepared in the step a) on the non-antistatic surface of the single-sided antistatic polyester film on a coating machine by using a comma scraper or a slit, wherein the coating thickness is 20 mu m, and thus obtaining the coated single-sided antistatic polyester film; running the single-sided antistatic polyester film after gluing at a linear speed of 38M/min, passing through a drying tunnel with the total length of 33M, sequentially passing through a drying tunnel with the temperature of 58 ℃ at the first section, 85 ℃ at the second section, 95 ℃ at the third section, 105 ℃ at the fourth section, 105 ℃ at the fifth section and 55 ℃ at the sixth section, further polymerizing and removing a solvent in the UV acrylic adhesive to obtain a semi-finished product M of the UV tackifying protective film for the OLED flexible panel; compounding the release agent surface of the double-sided antistatic release polyester film with the adhesive surface of the UV tackifying protection film semi-finished product M for the OLED flexible panel under the pressure of a compression roller of 0.45MPa and at the temperature of room temperature to obtain a UV tackifying protection film semi-finished product N for the OLED flexible panel; and then compounding one surface of the organic silicon adhesive of the antistatic organic silicon protective film with the antistatic surface (namely the antistatic surface of the single-sided antistatic polyester film) of the UV tackifying protective film semi-finished product N for the OLED flexible panel at the room temperature under the pressure of a compression roller of 0.45MPa, and finally placing the semi-finished product into a drying room at the temperature of 50 ℃ for curing for 48 hours to obtain the UV tackifying protective film for the OLED flexible panel.
In the above embodiments 21 to 23: the thermal curing agent is one or a mixture of more than two of methyl diisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate and hexamethylene diisocyanate (products providing enterprises are Bayer Corsai, Basff, Japan npu, Yingchu, Vencor and Wanhua), and the like; the photoinitiator is one or a mixture of two of 1-hydroxy-cyclohexyl benzophenone (or 184 photoinitiator) and 2-hydroxy-2-methyl-1-phenyl-1-acetone (or 1173 photoinitiator), and the production and supply enterprises are as follows: basf, winning Chuangdegusai, Shenzhen Jieshiki, etc.; the antistatic agent is one of an antistatic agent with a model number of KJD.F010 produced by Chongqing Cuanli technology company, an antistatic agent with a brand number of antistatic liquid TPL-25 or FL-40 produced by Suzhou Tepley new material company, an antistatic agent with a model number of IL-AP8 produced by Shanghai Rex and an antistatic agent with a model number of YL-1001 of Ningbo original material; the diluting solvent is one or two of toluene, ethyl acetate, butanone and cyclohexanone;
the performance parameters of the UV adhesion-promotion protective film for the OLED flexible panel prepared in the above embodiments 21-23 are as follows: before UV irradiation, the film has low tearing voltage (tearing voltage is less than 500V) and low surface resistance (surface resistance is 10)5-109Omega range), good air permeability, bonding force (180 DEG peeling) less than 30gf/25mm, stable bonding force, no adhesive residue degumming and other good performances, and after UV irradiation, the adhesive has low tear film voltage (tear film voltage less than 500V) and low surface resistance (surface resistance is 10)5-109In the range of omega), the bonding force (180-degree stripping) is increased to more than 800gf/25mm, and the adhesive can be well attached to the bottom of the OLED flexible panel, so that the polyimide film (PI) at the bottom of the OLED flexible panel is well protected.
In the above embodiments 21 to 23: the specific preparation method of the single-sided antistatic polyester film in the step b comprises the following steps: uniformly coating the antistatic agent on one side (namely one side) of the transparent PET film on a coating machine in a micro-concave coating mode to obtain a coated antistatic polyester film, wherein the coating thickness is 0.3-1 mu m; running the coated antistatic polyester film at a linear speed of 30m/min, and passing the film through a drying tunnel with the total length of 42m in sequence, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ to prepare the single-sided antistatic polyester film;
the specific preparation method of the double-sided antistatic ionized polyester film in the step b comprises the following steps: coating a layer of release agent on one side (namely an antistatic side) of the double-sided antistatic polyester film on a coating machine in a micro-concave coating mode, wherein the coating thickness is 0.3-1 mu m, so as to obtain the coated antistatic type polyester film; running the coated antistatic release polyester film at a linear speed of 35m/min, and passing the polyester film through a drying tunnel with the total length of 42m in sequence, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ to prepare the double-sided antistatic release polyester film;
the specific preparation method of the double-sided antistatic polyester film comprises the following steps: uniformly coating the antistatic agent on two sides (namely two sides) of the transparent PET film on a coating machine in a micro-concave coating mode, wherein the coating thickness is 0.3-1 mu m, and thus obtaining the coated antistatic polyester film; running the coated antistatic polyester film at a linear speed of 30m/min, and passing the coated antistatic polyester film through a drying tunnel with the total length of 42m, wherein the temperature of the first section is 75 ℃, the temperature of the second section is 90 ℃, the temperature of the third section is 100 ℃, the temperature of the fourth section is 110 ℃, the temperature of the fifth section is 110 ℃ and the temperature of the sixth section is 100 ℃ in sequence to prepare a double-sided antistatic polyester film;
the specific preparation method of the antistatic organic silicon protective film in the step b comprises the following steps: coating a layer of organic silicon adhesive on the antistatic surface of the single-sided antistatic polyester film on a coating machine by adopting one of a micro-concave, comma scraper or slit coating mode, wherein the coating thickness is 10 mu m, so as to obtain a coated antistatic organic silicon protective film; running the coated antistatic organic silicon protective film at a linear speed of 35m/min, and passing through a drying tunnel with the total length of 42m in sequence, wherein the temperature of the first section is 80 ℃, the temperature of the second section is 120 ℃, the temperature of the third section is 160 ℃, the temperature of the fourth section is 165 ℃, the temperature of the fifth section is 150 ℃ and the temperature of the sixth section is 90 ℃ to prepare the antistatic organic silicon protective film;
the antistatic agent is one of an antistatic agent with a model number of KJD.F010 produced by Chongqing Cuanli technology Co., Ltd, an antistatic agent with a model number of antistatic liquid TPL-25 or FL-40 produced by Suzhou Teplele new material Co., Ltd, an antistatic agent with a model number of IL-AP8 produced by Shanghai ChangZao and an antistatic agent with a model number of YL-1001 produced by Ningbo original new material.
In the above embodiments 21 to 23: the organic silicon adhesive can be an organic silicon adhesive provided by the Dow chemical production, and the brand (model) can be as follows: 7647, 7657, 7666, 7667, 7687, 7660.
The organic silicon adhesive comprises organic silicon resin, a curing agent, an adhesive force additive, a catalyst and a diluting solvent; the organic silicon resin is one or two of organic silicon resins with the Dow chemical models of 7647, 7657, 7666, 7667, 7687 and 7660; the curing agent is a curing agent with the Dow chemical models of 7028 and ADD 208; the adhesion additive is a Dow chemical adhesion additive with the model number of 297; the catalyst is a platinum catalyst 4000; the diluting solvent is one or two of toluene, ethyl acetate, butanone and cyclohexanone.
The transparent PET film (namely the PET film and the transparent PET film layer) is a transparent polyethylene terephthalate film for short, and the thickness of the transparent PET film can be any one of 25-75 micrometers.
In the above embodiment: the definition of the solid content is: drying the UV acrylic prepolymer resin to constant weight at the temperature of 90-150 ℃, wherein the mass of the remaining solids accounts for the mass percentage of the total amount of the UV acrylic prepolymer resin; correspondingly, the UV acrylic pre-polymerized resin with the solid content of 18-30% is obtained by drying the UV acrylic pre-polymerized resin to constant weight at the temperature of 90-150 ℃, and the mass of the obtained solid is 18-30% of that of the UV acrylic pre-polymerized resin.
In the above embodiment: the percentages used, not specifically indicated, are percentages by weight or known to those skilled in the art; the proportions used, not specifically noted, are mass (weight) proportions; the parts by mass (by weight) may all be grams or kilograms.
In the above embodiment: the process parameters (temperature, time, pressure, rotating speed, etc.) and the numerical values of the components in each step are in a range, and any point can be applicable.
The present invention and the technical contents not specifically described in the above examples are the same as those of the prior art, and the raw materials are all commercially available products.
The present invention is not limited to the above-described embodiments, and the present invention can be implemented with the above-described advantageous effects.
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