阅读说明：本技术 具有防红外功能的多功能组合物及多功能膜 (Multifunctional composition with infrared-proof function and multifunctional film ) 是由 段为甲 麦启波 陈业明 于 2019-09-24 设计创作，主要内容包括：本发明公开了一种具有防红外功能的多功能组合物,包括按重量份计的如下组分：涂料组合物90份、防指纹助剂0.1～0.5份、防红外助剂8～12份、增透助剂5～10份；所述涂料组合物由按照重量份计的如下组分经聚合反应后得到：聚氨酯丙烯酸酯预聚物10～30份、丙烯酸酯类单体5～10份、光引发剂0.5～10份、溶剂10～90份,其中,所述丙烯酸酯类单体选自季戊四醇六丙烯酸酯、季戊四醇三丙烯酸酯、乙氧基乙基丙烯酸酯、三羟基甲基丙烷三丙烯酸酯、己二醇二丙烯酸酯、丙氧基戊二醇二丙烯酸酯中的一种或多种。本发明还提供了由所述多功能组合物制成的多功能膜。本发明的具有防红外功能的多功能组合物,经过一次涂布即同时具备防红外、防指纹和增透的效果。(The invention discloses a multifunctional composition with an infrared-proof function, which comprises the following components in parts by weight: 90 parts of a coating composition, 0.1-0.5 part of an anti-fingerprint auxiliary agent, 8-12 parts of an infrared-proof auxiliary agent and 5-10 parts of an anti-reflection auxiliary agent; the coating composition is obtained by carrying out polymerization reaction on the following components in parts by weight: 10-30 parts of urethane acrylate prepolymer, 5-10 parts of acrylate monomer, 0.5-10 parts of photoinitiator and 10-90 parts of solvent, wherein the acrylate monomer is selected from one or more of pentaerythritol hexaacrylate, pentaerythritol triacrylate, ethoxyethyl acrylate, trimethylolpropane triacrylate, hexanediol diacrylate and propoxy pentanediol diacrylate. The present invention also provides a multifunctional film made from the multifunctional composition. The multifunctional composition with the infrared-proof function has the effects of infrared prevention, fingerprint prevention and permeability increase at the same time after one-time coating.)

1. The multifunctional composition with the infrared-proof function is characterized by comprising the following components in parts by weight: 90 parts of a coating composition, 0.1-0.5 part of an anti-fingerprint auxiliary agent, 8-12 parts of an infrared-proof auxiliary agent and 5-10 parts of an anti-reflection auxiliary agent;

the coating composition is obtained by carrying out polymerization reaction on the following components in parts by weight: 10-30 parts of a polyurethane acrylate prepolymer, 5-10 parts of an acrylate monomer, 0.5-10 parts of a photoinitiator and 10-90 parts of a solvent; wherein the acrylate monomer is selected from one or more of pentaerythritol hexaacrylate, pentaerythritol triacrylate, ethoxyethyl acrylate, trihydroxymethyl propane triacrylate, hexanediol diacrylate, and propoxypentanediol diacrylate.

2. The multifunctional composition with an infrared-proof function according to claim 1, wherein the anti-fingerprint auxiliary agent is a perfluoro copolymer, a fluorine-containing copolymer or a fluorine-containing functional monomer.

3. The multifunctional composition with the infrared-proof function as claimed in claim 1, wherein the infrared-proof auxiliary agent is one or more of tin dioxide doped modified nano powder, indium antimony oxide and a mixture thereof.

4. The multifunctional composition with the infrared-proof function according to claim 3, wherein the infrared-proof auxiliary agent is indium-doped tin dioxide and/or antimony-doped tin dioxide.

5. The multifunctional composition with the infrared-proof function as claimed in claim 1, wherein the anti-reflection auxiliary agent is one or more of titanium dioxide, silicon dioxide and modified nanopowder thereof.

6. The multifunctional infrared-shielding composition according to claim 1, wherein said solvent is ethyl acetate, acetone, methyl ethyl ketone, isopropyl alcohol or a mixture thereof.

7. The multifunctional composition with infrared shielding function of claim 1 wherein said photoinitiator is 2-hydroxy-methylphenylpropane-1-one, 1-hydroxycyclohexylphenylketone, 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide or phenylbis (2,4, 6-trimethylbenzoyl) phosphine oxide.

8. A multifunctional film comprising a substrate and a coating of the multifunctional composition of any one of claims 1 to 7 applied to the substrate.

Technical Field

The invention relates to the technical field of adhesive tapes, in particular to a multifunctional composition with an infrared-proof function and a multifunctional film.

Background

At present, glass curtain walls are used in a plurality of buildings, so that the light transmission is good, and the whole building looks beautiful and atmospheric. However, in hot summer, the glass curtain wall cannot block sunlight, and the sunlight can directly irradiate the interior of the building, so that the temperature in the building can be rapidly increased. Therefore, it has been studied for a long time to provide architectural glass with a function of reflecting infrared rays.

In the prior art, an infrared reflective coating may be provided on the surface of a glass substrate to constitute an infrared reflective glass; the rare earth element component may be added to the glass substrate to provide the glass substrate with a function of reflecting infrared rays. However, the above various infrared-proof glasses are mostly used for light-proof of glass in commercial houses, and basically are colored glasses, which not only have complicated preparation process, but also have high preparation cost, and limit further application thereof.

The infrared-proof film is adhered on the glass, so that the common glass has the infrared-proof function, and the method is an effective method. The mode is convenient to use and low in cost, and the cost of upgrading the infrared-proof glass of the existing commercial house is greatly reduced; in addition, the infrared-proof film is easy to replace and convenient to upgrade and upgrade; moreover, the film can be made into a multifunctional film, such as functions of infrared prevention, permeability improvement, fingerprint prevention and the like, so that the functionality of the glass is further improved.

At present, for the preparation of multifunctional films, the adjustment of the film structure is mainly aimed at, for example, the multifunctional is generally realized by a double-sided structure or a multi-layer structure, that is, each layer realizes one function by means of multi-layer coating. This way not only makes the coating process tedious, the loss and waste serious, but also can increase the thickness of film, influences the realization of function.

Disclosure of Invention

The invention aims to provide a multifunctional composition with an infrared-proof function, and the multifunctional composition has the effects of infrared prevention, fingerprint prevention and permeability increase after being coated once.

In order to solve the technical problems, the invention provides a multifunctional composition with an infrared-proof function, which comprises the following components in parts by weight: 90 parts of a coating composition, 0.1-0.5 part of an anti-fingerprint auxiliary agent, 8-12 parts of an infrared-proof auxiliary agent and 5-10 parts of an anti-reflection auxiliary agent;

the coating composition is obtained by carrying out polymerization reaction on the following components in parts by weight: 10-30 parts of polyurethane acrylate prepolymer, 5-10 parts of acrylate monomer, 0.5-10 parts of photoinitiator and 50-80 parts of solvent; wherein the acrylate monomer is selected from one or more of pentaerythritol hexaacrylate, pentaerythritol triacrylate, ethoxyethyl acrylate, trihydroxymethyl propane triacrylate, hexanediol diacrylate, and propoxypentanediol diacrylate.

In the present invention, the anti-fingerprint auxiliary can be an existing anti-fingerprint auxiliary, for exampleFP-2112 anti-fingerprint additive. Preferably, the anti-fingerprint auxiliary agent is a perfluoro copolymer, a fluorine-containing copolymer or a fluorine-containing functional monomer.

Further, the infrared-proof auxiliary agent is one or more of tin dioxide doped modified nano powder, indium antimony oxide and a mixture thereof.

Further, the infrared-proof auxiliary agent is indium-doped tin dioxide and/or antimony-doped tin dioxide.

Further, the anti-reflection auxiliary agent is one or more of titanium dioxide, silicon dioxide and modified nano powder thereof. According to the invention, the anti-reflection auxiliary agent can improve the transmittance of the coating, and the titanium dioxide and silicon dioxide powder can improve the hardness and scratch resistance of the coating.

Further, the solvent is ethyl acetate, acetone, butanone, isopropanol or a mixture thereof.

Further, the photoinitiator is 2-hydroxy-methylphenylpropane-1-one (photoinitiator 173), 1-hydroxycyclohexylmethophenone (photoinitiator 184), 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide (photoinitiator TPO), or phenylbis (2,4, 6-trimethylbenzoyl) phosphine oxide (photoinitiator 819).

The invention also provides a multifunctional film which comprises a base material and the multifunctional composition coating coated on the base material.

Further, the substrate may use any substrate known in the art, preferably a PET substrate.

The invention has the beneficial effects that:

1. according to the invention, the infrared-proof auxiliary agent, the fingerprint-proof auxiliary agent and the anti-reflection auxiliary agent with specific contents are added into the coating composition, and multiple functions of fingerprint prevention, scratch resistance and infrared prevention are realized through one-time coating, so that the coating composition can be widely applied.

2. The multifunctional composition coating has a scratch-resistant effect, and meanwhile, the coating can effectively prevent fingerprints from remaining dirty on the surface of the film due to the fingerprint-resistant auxiliary agent; in addition, the coating contains an infrared auxiliary agent, so that infrared rays can be effectively blocked; and the nano titanium dioxide or silicon dioxide is used to improve the transmittance of the coating.

Detailed Description

The present invention is further described below in conjunction with specific examples to enable those skilled in the art to better understand the present invention and to practice it, but the examples are not intended to limit the present invention.

Synthesis example 1

Adding the components into a reaction kettle according to the proportion of 20 parts of urethane acrylate prepolymer, 4 parts of pentaerythritol hexaacrylate, 3 parts of ethoxy ethyl acrylate and 3 parts of 2-hydroxy-methyl phenyl propane-1-ketone (photoinitiator 173), adding 60 parts of ethyl acetate, and carrying out polymerization reaction at 60 ℃ for 5 hours to obtain the coating composition.

Examples 1 to 4

According to the formula shown in Table 1, the coating composition, the infrared-proof auxiliary agent, the fingerprint-proof auxiliary agent and the anti-reflection auxiliary agent are uniformly mixed to obtain the multifunctional composition. Wherein tin dioxide A is commercially available indium-doped tin dioxide and tin dioxide B is commercially available antimony-doped tin dioxide.

TABLE 1 formulation of the multifunctional composition of examples 1 to 4 (parts by weight)

Physical Property test

The multifunctional composition was coated on the corona side of PET using the comma blade process, pre-baked at 40-100 ℃ for 3 minutes, and then applied at 300mj/cm²～1000mj/cm²The UV energy is used for curing, so that no bubbles and no obvious impurity points exist in the appearance, and the multifunctional film is obtained.

The thickness of the coating is tested according to GB/T7125-; the transmittance and infrared blocking rate data come from a solar film tester; the water drop angle test refers to GB/T30693-; the evaluation standard of the Baige attachment test refers to GB/T9286-88.

The results of the above tests are shown in table 2.

TABLE 2 physical Properties of the multifunctional films of examples 1-4

As can be seen from Table 2, when the coating thickness was 3 μm, the multi-functional films of examples 1 to 4 of the present invention all had infrared blocking rates of over 39% and transmittance of over 80%, showing good infrared-shielding and light-transmitting properties. Meanwhile, the water drop angle of the multifunctional film exceeds 103 degrees, and the multifunctional film shows hydrophobicity and can effectively prevent fingerprints. When the thickness of the coating is 7 mu m, the infrared blocking rate is greatly improved to be more than 85%, but the transmittance is reduced to some extent and exceeds 65%. Therefore, different coating thicknesses can be selected according to different application scenes so as to achieve the balance of the requirements of light transmittance and infrared blocking rate.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.