阅读说明：本技术 一种抗静电的玻璃蚀刻保护膜及其制备方法和应用 (Antistatic glass etching protective film and preparation method and application thereof ) 是由 柯跃虎 诸葛锋 宋亦健 曾庆明 于 2021-06-09 设计创作，主要内容包括：本发明涉及保护膜领域,尤其涉及一种抗静电的玻璃蚀刻保护膜及其制备方法和应用,所述保护膜从下至上依次分为基材层、溶剂型橡胶压敏胶层、离型膜层。本发明所述的一种抗静电的玻璃蚀刻保护膜具有优异的耐酸性能,酸性条件下仍具有优异的稳定性,在OLED面板的减薄工艺中能够对线路板起到良好的保护,且在在贴膜或撕膜过程中能够有效地减少静电的产生,静电压小于300V,使用时具有优异的抗静电效果。(The invention relates to the field of protective films, in particular to an antistatic glass etching protective film, and a preparation method and application thereof. The antistatic glass etching protective film disclosed by the invention has excellent acid resistance and excellent stability under an acidic condition, can well protect a circuit board in the thinning process of an OLED panel, can effectively reduce the generation of static in the film pasting or film tearing process, has the static voltage of less than 300V, and has an excellent antistatic effect in use.)

1. The antistatic glass etching protective film is characterized by being sequentially divided into a base material layer, a solvent type rubber pressure-sensitive adhesive layer and a release film layer from bottom to top.

2. The antistatic glass etching protective film according to claim 1, wherein the thickness ratio of the substrate layer, the solvent-type rubber pressure-sensitive adhesive layer and the release film layer is (5-7): (1-2): 1.

3. the antistatic glass etching protective film according to claim 1, wherein the solvent-based rubber pressure-sensitive adhesive layer is prepared from 30-60 parts by weight of a viscous matrix, 8-12 parts by weight of a resin, 0.07-0.1 part by weight of an anti-aging agent, and 15-30 parts by weight of a solvent.

4. The antistatic glass etching protective film according to claim 1, wherein the solvent-based rubber pressure-sensitive adhesive layer is prepared from 0.01-0.06 parts by weight of antistatic agent.

5. The antistatic glass etching protective film according to claim 3, wherein the adhesive matrix comprises at least one of natural rubber, styrene-butadiene rubber, silicone rubber, ethylene propylene rubber, acrylate rubber, chlorosulfonated polyethylene rubber, butyl rubber, chloroprene rubber, and isoprene rubber.

6. The antistatic glass etching protective film according to claim 3, wherein the resin comprises at least one of petroleum resin, hydrogenated petroleum resin, rosin resin, and terpene resin.

7. The antistatic glass etching protective film according to claim 4, wherein the antistatic agent comprises at least one of sodium allylsulfonate, polyethylene glycol oleate, methoxypolyethylene glycol-silane, antistatic agent S-18, antistatic agent S-15, antistatic agent AVC, and antistatic agent BY-400.

8. The antistatic glass etching protective film according to claim 3, wherein the anti-aging agent comprises at least one of anti-aging agent A, anti-aging agent 4010, anti-aging agent IPPD and anti-aging agent H.

9. A method for preparing an antistatic glass etching protective film according to any one of claims 1 to 8, comprising the steps of: (1) stirring and blending raw materials for preparing the solvent type rubber pressure-sensitive adhesive layer; (2) coating the preparation raw material of the solvent type rubber pressure-sensitive adhesive layer on the surface of the base material layer, and drying; (3) and (3) attaching the release film layer to the surface of the solvent type rubber pressure-sensitive adhesive layer, and rolling to obtain the adhesive.

10. Use of an antistatic glass etch protective film according to any of claims 1 to 9 in OLED panels.

Technical Field

The invention relates to the field of protective films, in particular to an antistatic glass etching protective film and a preparation method and application thereof.

Background

The OLED panel is a display panel made of self-emitting diodes, and is widely used in POS machines, ATM machines, copiers, game machines, and electronic products because of its advantages of high contrast, wide viewing angle, light weight, and thin volume. In the manufacturing process of the OLED panel, the OLED panel is often required to be soaked in an acid solution to adjust the thickness of the OLED panel, a protective film is required to be covered on one side which is not required to be adjusted, and because the line surface of the OLED panel is provided with an integrated circuit, if the electrostatic voltage is too large during film pasting or film tearing, the line of the panel can be punctured, so that the panel is scrapped, and the electrostatic voltage requirement of the protective film pasting is less than 500V. In addition, the acid resistance of the protective film is also very important, however, in the prior art, the protective film with both antistatic and acid resistance is less and has poor functionality, so it is necessary to develop an antistatic glass etching protective film suitable for the OLED panel.

Disclosure of Invention

The invention provides an antistatic glass etching protective film, which is sequentially divided into a base material layer, a solvent type rubber pressure-sensitive adhesive layer and a release film layer from bottom to top in parts by weight.

In a preferred embodiment, the thickness ratio of the substrate layer, the solvent-based rubber pressure-sensitive adhesive layer and the release film layer is (5-7): (1-2): 1.

as a preferred embodiment, the solvent type rubber pressure sensitive adhesive layer is prepared from 30-60 parts by weight of adhesive matrix, 8-12 parts by weight of resin, 0.07-0.1 part by weight of anti-aging agent and 15-30 parts by weight of solvent.

In a preferred embodiment, the solvent-based rubber pressure-sensitive adhesive layer is prepared from 0.01-0.06 part by weight of antistatic agent.

As a preferred embodiment, the adhesive matrix comprises at least one of natural rubber, styrene-butadiene rubber, silicone rubber, ethylene-propylene rubber, acrylate rubber, chlorosulfonated polyethylene rubber, butyl rubber, neoprene rubber, and isoprene rubber.

As a preferred embodiment, the resin includes at least one of a petroleum resin, a hydrogenated petroleum resin, a rosin resin, and a terpene resin.

As a preferred embodiment, the antistatic agent comprises at least one of sodium allylsulfonate, polyethylene glycol oleate, methoxypolyethylene glycol-silane, antistatic agent S-18, antistatic agent S-15, antistatic agent AVC, antistatic agent BY-400.

In a preferred embodiment, the antioxidant comprises at least one of antioxidant a, antioxidant 4010, antioxidant IPPD, and antioxidant H.

The second aspect of the present invention provides a method for preparing an antistatic glass etching protective film, comprising the steps of: (1) stirring and blending raw materials for preparing the solvent type rubber pressure-sensitive adhesive layer; (2) coating the preparation raw material of the solvent type rubber pressure-sensitive adhesive layer on the surface of the base material layer, and drying; (3) and (3) attaching the release film layer to the surface of the solvent type rubber pressure-sensitive adhesive layer, and rolling to obtain the adhesive.

The third aspect of the invention provides an application of the antistatic glass etching protective film in an OLED panel.

Compared with the prior art, the invention has the following beneficial effects: the antistatic glass etching protective film disclosed by the invention has excellent acid resistance and excellent stability under an acidic condition, can well protect a circuit board in the thinning process of an OLED panel, can effectively reduce the generation of static in the film pasting or film tearing process, has the static voltage of less than 300V, and has an excellent antistatic effect in use.

Detailed Description

In order to solve the technical problems, the invention provides an antistatic glass etching protective film, which is sequentially divided into a substrate layer, a solvent type rubber pressure sensitive adhesive layer and a release film layer from bottom to top.

In a preferred embodiment, the thickness ratio of the substrate layer, the solvent-based rubber pressure-sensitive adhesive layer and the release film layer is (5-7): (1-2): 1.

preferably, the base material layer material comprises any one of a PVC base material, a PET base material, a PP base material, a PU base material and a PS base material.

Preferably, the substrate layer material is a PVC substrate.

Preferably, the release film layer material comprises any one of a PET film, a PVC film, a PO film, and a PU film.

Preferably, the release film layer material is a PET film.

As a preferred embodiment, the solvent type rubber pressure sensitive adhesive layer is prepared from 30-60 parts by weight of adhesive matrix, 8-12 parts by weight of resin, 0.07-0.1 part by weight of anti-aging agent and 15-30 parts by weight of solvent.

Preferably, the adhesive matrix comprises at least one of natural rubber, styrene-butadiene rubber, silicone rubber, ethylene propylene rubber, acrylate rubber, chlorosulfonated polyethylene rubber, butyl rubber, neoprene rubber, and isoprene rubber.

Preferably, the adhesive matrix comprises natural rubber and silicone rubber.

Preferably, the mass ratio of the natural rubber to the silicone rubber is (1-3): (4-6).

Preferably, the elongation at break of the silicone rubber is 500-700%.

As a preferred embodiment, the resin includes at least one of a petroleum resin, a hydrogenated petroleum resin, a rosin resin, and a terpene resin.

Preferably, the resin is a hydrogenated petroleum resin.

Preferably, the acid value of the hydrogenated petroleum resin is not more than 0.5 mgKOH/g.

In a preferred embodiment, the antioxidant comprises at least one of antioxidant a, antioxidant D, antioxidant 4010, antioxidant IPPD, and antioxidant H.

Preferably, the antioxidant is antioxidant A, antioxidant D and antioxidant 4010.

Preferably, the mass ratio of the antioxidant A to the antioxidant D to the antioxidant 4010 is (1-2): (2-3): 1.

as a preferred embodiment, the solvent is at least one selected from the group consisting of ethyl acetate, toluene, tetrahydrofuran, acetone, diethyl ether, and dichloromethane.

Preferably, the solvent is selected from toluene.

In a preferred embodiment, the solvent-based rubber pressure-sensitive adhesive layer is prepared from 0.01-0.06 part by weight of antistatic agent.

As a preferred embodiment, the antistatic agent comprises at least one of sodium allylsulfonate, polyethylene glycol oleate, methoxypolyethylene glycol-silane, antistatic agent S-18, antistatic agent S-15, antistatic agent AVC, antistatic agent BY-400.

Preferably, the antistatic agent is antistatic agent S-18 and antistatic agent S-15.

Preferably, the mass ratio of the antistatic agent S-18 to the antistatic agent S-15 is 1: (3-5).

The second aspect of the present invention provides a method for preparing an antistatic glass etching protective film, comprising the steps of: (1) stirring and blending raw materials for preparing the solvent type rubber pressure-sensitive adhesive layer; (2) coating the preparation raw material of the solvent type rubber pressure-sensitive adhesive layer on the surface of the base material layer, and drying; (3) and (3) attaching the release film layer to the surface of the solvent type rubber pressure-sensitive adhesive layer, and rolling to obtain the adhesive.

The third aspect of the invention provides an application of the antistatic glass etching protective film in an OLED panel.

The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.

Silicone rubber available from Nanjing Roen silicon materials Co., Ltd

Hydrogenated Petroleum resin was purchased from Puyang Hengfeng petrochemical Co Ltd

Antistatic agent S-18 and antistatic agent S-15 were purchased from Hangzhou chemical research institute

PVC substrate from Shenzhen Ruilanbao film materials Limited

PET film purchased from Shenzhen Xin Rui Bao photoelectricity Limited

Natural rubber purchased from Jinan Lu rubber chemical Co Ltd

Antioxidant A, antioxidant D and antioxidant 4010 are obtained from chemical company of Wuzhou chemical Co., Ltd

Nitrile rubber was purchased from Camphor wood constant Tai Plastic raw materials Ministry of academic Union

C5 Petroleum resin was purchased from Puyang Kongyu Petroleum resins Co Ltd

In addition, the starting materials used are all commercially available, unless otherwise specified.

Examples

The first aspect of this embodiment provides an antistatic glass etching protection film, the protection film is divided into substrate layer, solvent type rubber pressure sensitive adhesive layer, release film layer from supreme down in proper order.

The base material layer is a PVC base material, and the thickness is 150 mu m.

The release film layer is made of a PET film with the thickness of 25 mu m.

The thickness of the solvent type rubber pressure sensitive adhesive layer is 35 mu m, and the preparation raw materials comprise, by weight, 40 parts of a viscous matrix, 11 parts of hydrogenated petroleum resin (with an acid value of 0.5mgKOH/g), 0.09 part of an anti-aging agent, 25 parts of toluene and 0.04 part of an antistatic agent.

The viscous matrix is natural rubber, and the silicon rubber (the elongation at break is 600%) is prepared from the following components in percentage by mass: 5, compounding.

The anti-aging agent is an anti-aging agent A, an anti-aging agent D and an anti-aging agent 4010, and the mass ratio of the anti-aging agent A to the anti-aging agent D is 1.5: 2.5: 1, compounding.

The antistatic agent is antistatic agent S-18, and the antistatic agent S-15 is prepared from the following components in a mass ratio of 1: 4, compounding.

In a second aspect, the present invention provides a method for preparing an antistatic glass etching protective film, including the following steps: (1) stirring and blending raw materials for preparing the solvent type rubber pressure-sensitive adhesive layer; (2) coating the preparation raw material of the solvent type rubber pressure-sensitive adhesive layer on the surface of the base material layer, and drying; (3) and (3) attaching the release film layer to the surface of the solvent type rubber pressure-sensitive adhesive layer, and rolling to obtain the adhesive.

The third aspect of the present embodiment provides an application of the antistatic glass etching protection film in an OLED panel.

Comparative example 1

This comparative example provides, in a first aspect, an antistatic glass etching protective film, the specific embodiment being the same as example 1, except that the viscous matrix is natural rubber, and the nitrile rubber (elongation at break 600%) is present in a mass ratio of 2: 5, compounding.

The second aspect of the present comparative example provides a method for preparing an antistatic glass etching protective film, and the specific embodiment is the same as example 1.

The third aspect of the present comparative example provides an application of the antistatic glass etching protection film in an OLED panel.

Comparative example 2

A first aspect of the present comparative example provides an antistatic glass etching protective film, which is specifically implemented in the same manner as in example 1, except that the adhesive base is natural rubber, and silicone rubber (elongation at break 600%) is used in a mass ratio of 5: 1, compounding.

The second aspect of the present comparative example provides a method for preparing an antistatic glass etching protective film, and the specific embodiment is the same as example 1.

The third aspect of the present comparative example provides an application of the antistatic glass etching protection film in an OLED panel.

Comparative example 3

This comparative example provides, in a first aspect, an antistatic glass etching protective film, and is specifically carried out in the same manner as in example 1, except that a C5 petroleum resin was used in place of the hydrogenated petroleum resin.

The second aspect of the present comparative example provides a method for preparing an antistatic glass etching protective film, and the specific embodiment is the same as example 1.

The third aspect of the present comparative example provides an application of the antistatic glass etching protection film in an OLED panel.

Comparative example 4

The first aspect of the present comparative example provides an antistatic glass etching protective film, and the specific embodiment is the same as example 1, except that the antistatic agent is antistatic agent S-18, antistatic agent S-15 is added in a mass ratio of 3: 2, compounding.

The second aspect of the present comparative example provides a method for preparing an antistatic glass etching protective film, and the specific embodiment is the same as example 1.

The third aspect of the present comparative example provides an application of the antistatic glass etching protection film in an OLED panel.

Performance testing

The protective films of the examples and comparative examples were applied to the surface of an OLED panel and the following tests were performed.

The antistatic properties are expressed in terms of surface resistivity, the surface resistivity test method being referred to: ASTM D-257, using a resistivity meter at a temperature of 23 ℃ and a relative humidity of 50%.

Acid resistance test method: uniformly mixing 10% of hydrofluoric acid, 5% of ammonium bifluoride, 7% of nitric acid, 8% of sulfuric acid and the balance of pure water, heating to 30 ℃, placing the OLED panel in an etching tank for 60min, taking out, and observing the surface change of the protective film.

	Surface resistivity (omega)	Acid resistance
			Example 1	3.6*108	Without change
Comparative example 1	4.5*109	Edge warping and corrosion of the protective film
			Comparative example 2	3.9*109	Edge warping and corrosion of the protective film
Comparative example 3	5.5*109	Edge warping and corrosion of the protective film
			Comparative example 4	5.1*1012	Edge warping and corrosion of the protective film

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content of the above disclosure into equivalent embodiments with equivalent changes, but all those simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the present invention.