A UV-curable hard coating liquid, an anti-UV and anti-glare cover film and its preparation method

Abstract

A photocurable hard coating liquid, an anti-UV anti-glare cover film, and a method for preparing the same are disclosed. The photocurable hard coating liquid comprises the following components by weight: 15-25 parts of high-functionality polyurethane acrylate oligomer, 5-15 parts of low-functionality fluorinated acrylate oligomer, 1-3 parts of anti-glare particles, 10-20 parts of titanium dioxide nanoparticle dispersion, 10-20 parts of active monomer, 2-4 parts of photoinitiator, 20-40 parts of solvent, 1-2 parts of leveling agent, and 2-4 parts of UV absorber. The anti-UV anti-glare cover film formed after curing of the photocurable hard coating liquid simultaneously possesses properties such as UV resistance, high adhesion, and anti-fouling, and has an appearance free from whitening or haze, with uniform particle distribution.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anti-glare hard coating film, in particular to an ultraviolet-resistant, high-coating-adhesion photocuring hard coating liquid, an ultraviolet-resistant anti-glare cover plate film and a preparation method thereof. BACKGROUND

[0002] New display screens have become indispensable electronic devices in people's lives, such as electronic paper displays, light energy blackboards, etc. If UV cannot be effectively filtered during use, it is easy to cause the electronic ink in the electronic paper display and the liquid crystal in the light energy blackboard to deteriorate and age faster.

[0003] In order to prolong the service life of such electronic devices, the ultraviolet resistance of the product needs to be improved. The most commonly used method at present is to paste an ultraviolet-resistant hard cover plate film on the surface. Since there is much glare in the environment in which these new display devices are used, it is easy to cause visual discomfort and affect the clarity of the display, so such a cover plate film is also required to have an anti-glare effect.

[0004] CN201510275563.6 discloses an anti-glare coating and an anti-glare hard coating film. By using two different particle sizes of anti-glare particles, the prepared anti-glare hard coating film has excellent performance of low flash point and high clarity, and excellent leveling. CN201611195944.4 discloses an anti-glare and anti-flash point coating, a preparation method and application. The anti-glare and anti-flash point coating, by using high-speed stirring dispersion process, high-pressure emulsification and grinding process, makes the uniform distribution of anti-glare particles in the UV glue and good storage stability, and the particle size is closer to the original particle size, so that the prepared hard coating film has the characteristics of anti-glare and low flash point. Although the above two patents both report the use of two kinds of particles for compounding and application in anti-glare film, the small particles used in CN201510275563.6 do not reach the true nanometer level (below 100 nm), and the nanometer particles used in CN201611195944.4 should mainly be used to improve the uniformity of micrometer anti-glare particles. In addition, the particles used in the two patents do not have ultraviolet absorption function, and the key point is that they do not have anti-ultraviolet function. But the prepared anti-glare hard coating film has poor appearance and ultraviolet resistance; the prepared anti-glare hard coating film has insufficient clarity and does not have anti-ultraviolet ability.

[0005] Anti-ultraviolet hard cover plate film is mainly prepared by adding ultraviolet absorption aids in the hard coating layer, but the addition of ultraviolet absorption aids will interfere with the ultraviolet curing reaction of the hard coating formula, weaken the initiation efficiency of the photoinitiator, affect the photocuring kinetics process of the hard coating layer, and make the adhesion between the coating and the substrate worse. At the same time, due to the change of the curing degree, the ultraviolet absorption aids will precipitate during the photocuring process, causing the film surface to mist and be wiped, which is not conducive to its actual application. SUMMARY

[0006] In order to solve the problem of the existing anti-ultraviolet anti-glare cover film coating process, the present application provides a kind of photocuring hard coating liquid, anti-ultraviolet anti-glare cover film and preparation method thereof.The anti-ultraviolet anti-glare cover film provided by the present application replaces a part of anti-ultraviolet absorption auxiliary agent with titanium dioxide nanoparticles, which will not cause the precipitation of ultraviolet absorption auxiliary agent during the coating process, and the adhesion after coating is good and the appearance is white and mist-free, and the particle distribution is uniform.

[0007] In order to solve the above technical problems, the present application adopts the following technical scheme.

[0008] The present application provides a kind of photocuring composition, the photocuring hard coating liquid includes the following components by weight parts: high functionality polyurethane acrylate oligomer 15-25 parts, low functionality fluorine-containing acrylate oligomer 5-15 parts, anti-glare particle 1-3 parts, titanium dioxide nanoparticle dispersion 10-20 parts, active monomer 10-20 parts, photoinitiator 2-4 parts, solvent 20-40 parts, leveling agent 1-2 parts, ultraviolet absorber 2-4 parts.

[0009] Further, the high functionality polyurethane acrylate oligomer is selected from polyurethane acrylate oligomers with functionality equal to or greater than five functionality, preferably one or a combination of six functionality polyurethane acrylate oligomers, seven functionality polyurethane acrylate oligomers, eight functionality polyurethane acrylate oligomers.

[0010] Further, the high functionality polyurethane acrylate oligomer is 18-22 parts by weight, or 19 parts, 20 parts, 21 parts.

[0011] Further, the low functionality fluorine-containing acrylate oligomer is selected from fluorine-containing acrylate oligomers with functionality less than five functionality, preferably one or a combination of difunctional fluorine-containing acrylate methyl ester, difunctional fluorine-containing acrylate butyl ester, trifunctional fluorine-containing acrylate methyl ester, trifunctional fluorine-containing acrylate butyl ester.

[0012] Further, the low functionality fluorine-containing acrylate oligomer is 8-12 parts by weight, or 9 parts, 10 parts, 11 parts.

[0013] Further, the anti-glare particle is one or a combination of at least two of silica inorganic particles, PMMA particles, PS particles. Considering the hardness and wear resistance of the coating film, the rigid silica particles are preferred.

[0014] Further, the particle size of the anti-glare particle is 0.3-8.0 μm.

[0015] Further, the particle size of the anti-glare particles is preferably 0.5-6.0 μm, or 1.0 μm, 2.0 μm, 3.0 μm, 4.0 μm, 5.0 μm. If the particle size is too small, the desired anti-glare effect cannot be achieved. If the particle size is too large, the particles are easily settled, causing uneven haze.

[0016] Further, the weight of the anti-glare particles is 2-3 parts, or 2.5 parts.

[0017] Further, the weight of the titanium dioxide nanoparticle dispersion is 10-20 parts, or 12 parts, 14 parts, 15 parts, 16 parts, 18 parts.

[0018] Further, the titanium dioxide nanoparticle dispersion is an organic solvent dispersion, and the mass content of the titanium dioxide nanoparticles is 10%-60%, or 20%, 30%, 40%, 50%.

[0019] Further, a dispersant is added to the titanium dioxide nanoparticle dispersion.

[0020] Further, the titanium dioxide in the titanium dioxide nanoparticle dispersion is one or a combination of at least two of rutile titanium dioxide nanoparticles and anatase titanium dioxide nanoparticles.

[0021] Further, the rutile titanium dioxide nanoparticles have a higher absorption capacity for ultraviolet light than the anatase titanium dioxide nanoparticles, and the titanium dioxide nanoparticles are preferably rutile titanium dioxide nanoparticles.

[0022] Further, the particle size of the titanium dioxide particles is 15-100 nm.

[0023] Further, the particle size of the titanium dioxide particles is preferably 25-60 nm, or 30 nm, 40 nm, 50 nm. At this particle size, the absorption capacity for ultraviolet light is best.

[0024] Further, the use of titanium dioxide particles has the following advantages: when the particle size is large, the particles have effective reflection and scattering properties for medium and long wave ultraviolet light; when the particle size is small, the particles have good absorption properties for medium wave ultraviolet light; when the particle size of the titanium dioxide nanoparticles is less than 100 nm, the particles have good scattering and absorption properties for UVA and UVB; the titanium dioxide nanoparticles have superhydrophilic properties, and water droplets are not easily formed on the surface of the particles; under visible light irradiation, the particles can decompose hydrocarbon organic pollutants, achieving self-cleaning and having good anti-fouling properties.

[0025] Further, the active monomer is selected from substituted or unsubstituted acrylate monomers, and is preferably one or a combination of at least two of pentaerythritol triacrylate, dipentaerythritol pentaacrylate, and trimethylolpropane trimethacrylate.

[0026] Further, the weight parts of the active monomer is 12-16 parts, or 10 parts, 14 parts, 15 parts, 18 parts.

[0027] Further, the photoinitiator is selected from one or a combination of at least two of 2-hydroxy-2-methyl-1-phenyl-1-propanone (1173), 1-hydroxycyclohexyl phenyl ketone (184), 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1-propanone (907), 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO).

[0028] Further, the photoinitiator is preferably one or a combination of at least two of 1-hydroxycyclohexyl phenyl ketone (184), 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO).

[0029] Further, the weight parts of the photoinitiator is 2.5 parts, 3 parts, 3.5 parts.

[0030] Further, the solvent is selected from ketones, ethers, ester solvents.

[0031] Further, the solvent is selected from one or a combination of at least two of butanone, methyl isobutyl ketone, propylene glycol methyl ether, ethyl acetate.

[0032] Further, the solvent is preferably one or a combination of at least two of propylene glycol methyl ether, ethyl acetate.

[0033] Further, the leveling agent is selected from one or a combination of at least two of fluorine-based leveling agents, organosiloxane leveling agents, silicone-modified leveling agents.

[0034] Further, the leveling agent is selected from one or a combination of at least two of MEGAFACE F440, F445, F470 of Dainippon Ink and Chemicals, BYK-333, BYK-377, BYK-378 of BYK-Chemie, Flow 300, Flow 370, Flow 425 of Wacker, Levaslip 835, Levaslip 867, Levaslip 879 of DeGussa.

[0035] Further, the leveling agent is preferably one or a combination of at least two of BYK 333, MEGAFACE F440.

[0036] Further, the weight parts of the leveling agent is 1.2 parts, 1.5 parts, 1.8 parts.

[0037] Further, the ultraviolet absorber is selected from one or a combination of at least two of benzophenone-based, benzotriazole-based, triazine-based.

[0038] Further, considering the higher ultraviolet absorption efficiency and the wider absorption wavelength range, the ultraviolet absorber is preferably a benzotriazole ultraviolet absorber.

[0039] Further, the weight part of the ultraviolet absorber is 2.5 parts, 3.0 parts, 3.5 parts.

[0040] The second aspect of the present application provides an anti-ultraviolet anti-glare film, comprising a substrate and an anti-ultraviolet anti-glare layer, the anti-ultraviolet anti-glare layer is attached to one surface of the substrate. Wherein, the anti-ultraviolet anti-glare layer is formed after the curing of the above-mentioned photocuring composition.

[0041] Further, the substrate is one of polyethylene terephthalate film, polycarbonate film or triacetate cellulose film.

[0042] Further, the substrate is preferably polyethylene terephthalate film (PET).

[0043] Further, the thickness of the substrate is 25-250μm, or 50μm, 100μm, 150μm, 200μm.

[0044] Further, the thickness of the substrate is preferably 125-188μm, or 150μm, 160μm, 170μm, 180μm.

[0045] The third aspect of the present application provides a preparation method of an anti-ultraviolet anti-glare film, comprising the following steps:

[0046] Formulating a photocuring composition;

[0047] Coating the photocuring composition on the substrate;

[0048] Drying the coating at a temperature of 80-90℃;

[0049] Curing the dried coating by ionizing radiation active energy rays.

[0050] Further, the ionizing radiation active energy rays are selected from ultraviolet rays or electron beams.

[0051] Further, the ionizing radiation active energy rays are preferably ultraviolet rays.

[0052] Further, the light dose for irradiation is 200-1000mJ / cm 2 , or 300mJ / cm 2 , 500mJ / cm 2 , or 800mJ / cm 2 .

[0053] Further, the light dose for irradiation is preferably 400-800 mJ / cm 2 .

[0054] Compared with the prior art, the present application has the following beneficial effects: the traditional anti-ultraviolet film can cause the ultraviolet absorption auxiliary agent to precipitate in the coating process, and the adhesion after coating is unqualified. The present application replaces part of the traditional ultraviolet absorption auxiliary agent with inorganic titanium dioxide nanoparticle dispersion liquid, overcomes the precipitation of the ultraviolet absorption auxiliary agent, the unqualified adhesion, and the whitening and misting of the film surface, and the obtained anti-ultraviolet anti-glare cover plate film is not whitened and misted in appearance; at the same time, the waterproof, antifouling and self-cleaning ability of the obtained anti-ultraviolet anti-glare cover plate film is improved to a certain extent.

[0055] DRAWINGS

[0056] Figure 1 The structure schematic diagram of the anti-ultraviolet anti-glare cover plate film provided by the present application is shown, wherein 1 is a hard coating layer, and 2 is a substrate layer.

[0057] Figure 2 The microscope structure diagram of the anti-ultraviolet anti-glare cover plate film provided by the present application is shown.

[0058] Figure 3 The product photo of the light energy blackboard provided by the present application (the cover plate is the anti-ultraviolet anti-glare film) is shown. DETAILED DESCRIPTION

[0059] In order to more easily understand the structure of the present application and the function characteristics and advantages that can be achieved, the preferred embodiments of the present application are described in detail below, and the detailed description is as follows with reference to the drawings, but the present application is not limited thereto.

[0060] As shown in Figure 1 , the anti-ultraviolet anti-glare cover plate film provided by the present application includes, from top to bottom, an anti-ultraviolet anti-glare hard coating layer 1 and a substrate 2, and the anti-glare hard coating layer contains anti-glare particles.

[0061] Further, the preparation method of the anti-ultraviolet anti-glare cover plate film provided by the present application is as follows: configuring a photocuring composition, coating the photocuring composition onto a substrate, curing the formed coating layer at 80-90°C for 3 minutes, and curing the dried coating layer by ultraviolet rays to obtain the anti-ultraviolet anti-glare cover plate film.

[0062] The performance of the anti-ultraviolet anti-glare cover plate film provided by the examples and comparative examples of the present application is tested according to the following method:

[0063] (1) Haze, total light transmittance

[0064] A haze meter of Japan Electron Optics, NDH 2000N type, is used to measure by the transmission light method.

[0065] (2) Pencil hardness

[0066] The hardness of the pencils in the product was measured using an Elcometer 3086 pencil hardness tester. Measurement method: Using a Mitsubishi pencil with a hardness of H-9H, five lines were drawn under a 500g load. Then, the anti-UV and anti-glare cover film coating was observed for scratches, and the following standards were used for judgment.

[0067] Judgment criteria

[0068] 0-1 scratches, graded as "◎" (pass);

[0069] 2-5 scratches will result in an "×" (unacceptable).

[0070] (3) Adhesion test

[0071] Use a cross-cut tape cutter to gently cut a grid on the coating. Then, use 3M 600 tape to press and flatten it onto the cut areas. After 5 minutes, peel off the tape and observe the coating removal within the grid using a magnifying glass. Judge the coating removal percentage by the percentage of coating remaining: 0% if the coating has completely fallen off, and 100% if the coating has completely remained.

[0072] (4) 380nm ultraviolet transmittance test

[0073] The colorimeter was NDH SD700, and the measurement was performed using the transmission method.

[0074] (5) Appearance

[0075] Visually inspect the surface of the anti-UV and anti-glare cover film for whitening or fogging, for the precipitation of UV absorbers, and for the uniformity of particle distribution. Evaluate according to the following criteria:

[0076] The appearance is free of whitening or haze, with no precipitation of ultraviolet absorbing additives, and the particles are evenly distributed. It is marked as "◎" (excellent), indicating a good appearance.

[0077] The appearance is slightly white and hazy, with a small amount of ultraviolet absorption additive precipitated. The particles are relatively evenly distributed, which is marked as "△" (qualified), indicating that the appearance is qualified.

[0078] The appearance is whitish and hazy, with a large amount of ultraviolet absorption additive precipitated and uneven particle distribution. This is marked as "×" (unqualified), indicating that the appearance is unqualified.

[0079] Adding titanium dioxide nanoparticles directly can easily cause particle aggregation, affecting the physical properties of the final product. Therefore, a titanium dioxide nanoparticle dispersion can be prepared for pre-dispersion.

[0080] Titanium dioxide nanoparticle dispersions can be obtained by adding titanium dioxide nanoparticles to an organic solvent and stirring, or by further adding a dispersant.

[0081] The organic solvent can be an ether or an ester.

[0082] The preparation method can be listed as follows: In a 300ml beaker, add 20g of Zhitai Nano Micro ZT-T25 rutile titanium dioxide nanoparticles, 39.8g of propylene glycol methyl ether, 39.8g of ethyl acetate and 0.4g of BYK-LP N25432 wetting and dispersing agent in sequence, stir for ten minutes to obtain a 20% mass percentage titanium dioxide nanoparticle dispersion.

[0083] Example 1

[0084] The present invention provides a photocurable composition and an anti-ultraviolet anti-glare cover film, wherein the anti-ultraviolet anti-glare cover film includes a substrate and an anti-ultraviolet anti-glare layer, and the anti-ultraviolet anti-glare layer is formed by the photocurable composition.

[0085] A photocurable composition is obtained by mixing 20 parts by weight of hexafunctional polyurethane acrylate oligomer, 10 parts by weight of trifunctional fluorinated methyl acrylate, 3 parts by weight of silica inorganic particles, 10 parts by weight of titanium dioxide inorganic particle dispersion, 14 parts by weight of pentaerythritol triacrylate, 2 parts by weight of photoinitiator 184, 18 parts by weight of propylene glycol methyl ether, 18 parts by weight of ethyl acetate, 1 part by weight of BYK333 leveling agent, and 4 parts by weight of EVERSORB 109 UV absorber from Yongguang Chemical.

[0086] The above-described photocurable composition was coated onto one side of a 125 μm thick optical-grade polyethylene terephthalate film (Toray Industries, Korea, XG7PL2). The resulting coating was dried at 80-90°C for 3 minutes at a pressure of 400 mJ / cm². 2 The amount of light is used to cure the dried coating by ultraviolet irradiation, forming an anti-UV anti-glare cover layer, resulting in an anti-UV anti-glare cover film. Relevant physical property data are shown in Table 1. Figure 2 .

[0087] Example 2

[0088] The photocurable composition and anti-UV anti-glare cover film provided in Example 1.

[0089] A photocurable composition is obtained by mixing 20 parts by weight of hexafunctional polyurethane acrylate oligomer, 10 parts by weight of trifunctional fluorinated methyl acrylate, 3 parts by weight of silica inorganic particles, 15 parts by weight of titanium dioxide inorganic particle dispersion, 14 parts by weight of pentaerythritol triacrylate, 2 parts by weight of photoinitiator 184, 16 parts by weight of propylene glycol methyl ether, 16 parts by weight of ethyl acetate, 1 part by weight of BYK333 leveling agent, and 3 parts by weight of EVERSORB 109 UV absorber from Yongguang Chemical.

[0090] The above-described photocurable composition was coated onto one side of a 125 μm thick optical-grade polyethylene terephthalate film (Toray Industries, Korea, XG7PL2). The resulting coating was dried at 80-90°C for 3 minutes at a pressure of 400 mJ / cm². 2 The amount of light is used to cure the dried coating by ultraviolet irradiation to form an anti-ultraviolet anti-glare cover layer, resulting in an anti-ultraviolet anti-glare cover film. The relevant physical property data are shown in Table 1.

[0091] Example 3

[0092] The photocurable composition and anti-UV anti-glare cover film provided in Example 1.

[0093] A photocurable composition is obtained by mixing 20 parts by weight of hexafunctional polyurethane acrylate oligomer, 10 parts by weight of trifunctional fluorinated methyl acrylate, 3 parts by weight of silica inorganic particles, 20 parts by weight of titanium dioxide inorganic particle dispersion, 14 parts by weight of pentaerythritol triacrylate, 2 parts by weight of photoinitiator 184, 14 parts by weight of propylene glycol methyl ether, 14 parts by weight of ethyl acetate, 1 part by weight of BYK333 leveling agent, and 2 parts by weight of EVESROB 109 UV absorber from Yongguang Chemical.

[0094] The above-described photocurable composition was coated onto one side of a 125 μm thick optical-grade polyethylene terephthalate film (Toray Industries, Korea, XG7PL2). The resulting coating was dried at 80-90°C for 3 minutes at a pressure of 400 mJ / cm². 2 The amount of light is used to cure the dried coating by ultraviolet irradiation to form an anti-ultraviolet anti-glare cover layer, resulting in an anti-ultraviolet anti-glare cover film. The relevant physical property data are shown in Table 1.

[0095] Example 4

[0096] The photocurable composition and anti-UV anti-glare cover film provided in Example 1.

[0097] A photocurable composition is obtained by mixing 20 parts by weight of hexafunctional polyurethane acrylate oligomer, 10 parts by weight of trifunctional fluorinated methyl acrylate, 3 parts by weight of silica inorganic particles, 10 parts by weight of titanium dioxide inorganic particle dispersion, 14 parts by weight of pentaerythritol triacrylate, 4 parts by weight of photoinitiator 184, 17 parts by weight of propylene glycol methyl ether, 17 parts by weight of ethyl acetate, 1 part by weight of BYK333 leveling agent, and 4 parts by weight of EVESROB 109 ultraviolet absorber from Yongguang Chemical.

[0098] The above-described photocurable composition was coated onto one side of a 125 μm thick optical-grade polyethylene terephthalate film (Toray Industries, Korea, XG7PL2). The resulting coating was dried at 80-90°C for 3 minutes at a pressure of 400 mJ / cm². 2The amount of light is used to cure the dried coating by ultraviolet irradiation to form an anti-ultraviolet anti-glare cover layer, resulting in an anti-ultraviolet anti-glare cover film. The relevant physical property data are shown in Table 1.

[0099] Example 5

[0100] The photocurable composition and anti-UV anti-glare cover film provided in Example 1.

[0101] A photocurable composition is obtained by mixing 20 parts by weight of hexafunctional polyurethane acrylate oligomer, 10 parts by weight of trifunctional fluorinated methyl acrylate, 3 parts by weight of silica inorganic particles, 15 parts by weight of titanium dioxide inorganic particle dispersion, 14 parts by weight of pentaerythritol triacrylate, 4 parts by weight of photoinitiator 184, 15 parts by weight of propylene glycol methyl ether, 15 parts by weight of ethyl acetate, 1 part by weight of BYK333 leveling agent, and 3 parts by weight of EVESROB 109 ultraviolet absorber from Yongguang Chemical.

[0102] The above-described photocurable composition was coated onto one side of a 125 μm thick optical-grade polyethylene terephthalate film (Toray Industries, Korea, XG7PL2). The resulting coating was dried at 80-90°C for 3 minutes at a pressure of 400 mJ / cm². 2 The amount of light is used to cure the dried coating by ultraviolet irradiation to form an anti-ultraviolet anti-glare cover layer, resulting in an anti-ultraviolet anti-glare cover film. The relevant physical property data are shown in Table 1.

[0103] Example 6

[0104] The photocurable composition and anti-UV anti-glare cover film provided in Example 1.

[0105] A photocurable composition is obtained by mixing 20 parts by weight of hexafunctional polyurethane acrylate oligomer, 10 parts by weight of trifunctional fluorinated methyl acrylate, 3 parts by weight of silica inorganic particles, 20 parts by weight of titanium dioxide inorganic particle dispersion, 14 parts by weight of pentaerythritol triacrylate, 4 parts by weight of photoinitiator 184, 13 parts by weight of propylene glycol methyl ether, 13 parts by weight of ethyl acetate, 1 part by weight of BYK333 leveling agent, and 2 parts by weight of EVERSORB 109 ultraviolet absorber from Yongguang Chemical.

[0106] The above-described photocurable composition was coated onto one side of a 125 μm thick optical-grade polyethylene terephthalate film (Toray Industries, Korea, XG7PL2). The resulting coating was dried at 80-90°C for 3 minutes at a pressure of 400 mJ / cm². 2 The amount of light is used to cure the dried coating by ultraviolet irradiation to form an anti-ultraviolet anti-glare cover layer, resulting in an anti-ultraviolet anti-glare cover film. The relevant physical property data are shown in Table 1.

[0107] Example 7

[0108] The photocurable composition and anti-UV anti-glare cover film provided in Example 1.

[0109] A photocurable composition is obtained by mixing 20 parts by weight of hexafunctional polyurethane acrylate oligomer, 10 parts by weight of trifunctional fluorinated methyl acrylate, 1 part by weight of silica inorganic particles, 15 parts by weight of titanium dioxide inorganic particle dispersion, 14 parts by weight of pentaerythritol triacrylate, 4 parts by weight of photoinitiator 184, 16 parts by weight of propylene glycol methyl ether, 16 parts by weight of ethyl acetate, 1 part by weight of BYK333 leveling agent, and 3 parts by weight of EVERSORB 109 UV absorber from Yongguang Chemical.

[0110] The above-described photocurable composition was coated onto one side of a 125 μm thick optical-grade polyethylene terephthalate film (Toray Industries, Korea, XG7PL2). The resulting coating was dried at 80-90°C for 3 minutes at a pressure of 400 mJ / cm². 2 The amount of light is used to cure the dried coating by ultraviolet irradiation to form an anti-ultraviolet anti-glare cover layer, resulting in an anti-ultraviolet anti-glare cover film. The relevant physical property data are shown in Table 1.

[0111] Example 8

[0112] The photocurable composition and anti-UV anti-glare cover film provided in Example 1.

[0113] A photocurable composition was obtained by mixing 20 parts by weight of hexafunctional polyurethane acrylate oligomer, 10 parts by weight of trifunctional fluorinated methyl acrylate, 6 parts by weight of silica inorganic particles, 15 parts by weight of titanium dioxide inorganic particle dispersion, 14 parts by weight of pentaerythritol triacrylate, 4 parts by weight of photoinitiator 184, 13.5 parts by weight of propylene glycol methyl ether, 13.5 parts by weight of ethyl acetate, 1 part by weight of BYK333 leveling agent, and 3 parts by weight of EVESROB 109 UV absorber from Yongguang Chemical.

[0114] The above-described photocurable composition was coated onto one side of a 125 μm thick optical-grade polyethylene terephthalate film (Toray Industries, Korea, XG7PL2). The resulting coating was dried at 80-90°C for 3 minutes at a pressure of 400 mJ / cm². 2 The amount of light is used to cure the dried coating by ultraviolet irradiation to form an anti-ultraviolet anti-glare cover layer, resulting in an anti-ultraviolet anti-glare cover film. The relevant physical property data are shown in Table 1.

[0115] Comparative Example 1

[0116] A photocurable composition and an anti-UV glare cover film are provided.

[0117] A photocurable composition was obtained by mixing 20 parts by weight of hexafunctional polyurethane acrylate oligomer, 10 parts by weight of trifunctional fluorinated methyl acrylate, 3 parts by weight of silica inorganic particles, 15 parts by weight of titanium dioxide inorganic particle dispersion, 14 parts by weight of pentaerythritol triacrylate, 1 part by weight of photoinitiator 184, 16.5 parts by weight of propylene glycol methyl ether, 16.5 parts by weight of ethyl acetate, 1 part by weight of BYK333 leveling agent, and 3 parts by weight of EVESROB 109 UV absorber from Yongguang Chemical.

[0118] The above-described photocurable composition was coated onto one side of a 125 μm thick optical-grade polyethylene terephthalate film (Toray Industries, Korea, XG7PL2). The resulting coating was dried at 80-90°C for 3 minutes at a pressure of 400 mJ / cm². 2 The amount of light is used to cure the dried coating by ultraviolet irradiation to form an anti-ultraviolet anti-glare cover layer, resulting in an anti-ultraviolet anti-glare cover film. The relevant physical property data are shown in Table 1.

[0119] Compared with the technical solution provided by the present invention, the difference of the photocurable composition provided in Comparative Example 1 is that the content of photoinitiator in the formulation is lower.

[0120] Comparative Example 2

[0121] A photocurable composition and an anti-UV glare cover film are provided.

[0122] A photocurable composition is obtained by mixing 20 parts by weight of hexafunctional polyurethane acrylate oligomer, 10 parts by weight of trifunctional fluorinated methyl acrylate, 3 parts by weight of silica inorganic particles, 14 parts by weight of pentaerythritol triacrylate, 4 parts by weight of photoinitiator 184, 21 parts by weight of propylene glycol methyl ether, 21 parts by weight of ethyl acetate, 1 part by weight of BYK333 leveling agent, and 6 parts by weight of EVESROB 109 UV absorber from Yongguang Chemical.

[0123] The above-described photocurable composition was coated onto one side of a 125 μm thick optical-grade polyethylene terephthalate film (Toray Industries, Korea, XG7PL2). The resulting coating was dried at 80-90°C for 3 minutes at a pressure of 400 mJ / cm². 2 The amount of light is used to cure the dried coating by ultraviolet irradiation to form an anti-ultraviolet anti-glare cover layer, resulting in an anti-ultraviolet anti-glare cover film. The relevant physical property data are shown in Table 1.

[0124] Compared with the technical solution provided by the present invention, the difference of the photocurable composition provided in Comparative Example 2 is that titanium dioxide nanoparticles are not added to the formulation.

[0125] Comparative Example 3

[0126] A photocurable composition and an anti-UV glare cover film are provided.

[0127] A photocurable composition is obtained by mixing 20 parts by weight of hexafunctional polyurethane acrylate oligomer, 10 parts by weight of trifunctional fluorinated methyl acrylate, 3 parts by weight of silica inorganic particles, 30 parts by weight of titanium dioxide inorganic particle dispersion, 14 parts by weight of pentaerythritol triacrylate, 4 parts by weight of photoinitiator 184, 9 parts by weight of propylene glycol methyl ether, 9 parts by weight of ethyl acetate, and 1 part by weight of BYK333 leveling agent.

[0128] The above-described photocurable composition was coated onto one side of a 125 μm thick optical-grade polyethylene terephthalate film (Toray Industries, Korea, XG7PL2). The resulting coating was dried at 80-90°C for 3 minutes at a pressure of 400 mJ / cm². 2 The amount of light is used to cure the dried coating by ultraviolet irradiation to form an anti-ultraviolet anti-glare cover layer, resulting in an anti-ultraviolet anti-glare cover film. The relevant physical property data are shown in Table 1.

[0129] Compared with the technical solution provided by the present invention, the difference of the photocurable composition provided in Comparative Example 3 is that no ultraviolet absorption additive is added to the formulation.

[0130] Table 1. Performance test results of the hardened films provided in Examples 1-8 and Comparative Examples 1-3.

[0131]

[0132] The anti-UV and anti-glare cover film provided by this invention has excellent overall performance, with no UV absorber precipitation, good adhesion, no whitening on the surface, and uniform particle distribution. Among them, the anti-UV and anti-glare cover film provided in Example 5 has the best overall performance. Comparative Example 1, due to insufficient photoinitiator, resulted in incomplete reaction, precipitation of UV absorber, whitening of the surface, and unacceptable adhesion; Comparative Example 2, due to the lack of titanium dioxide particles, also resulted in precipitation of UV absorber, unacceptable adhesion and appearance; Comparative Example 3, due to the absence of UV absorber, resulted in unacceptable UV absorption effect and a brittle final film surface.

[0133] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. All equivalent variations and modifications made based on the content of the present invention are covered within the patent scope of the present invention.

Claims

1. A photocurable hard coat liquid, characterized by comprising: The photocuring hard coating liquid comprises the following components by weight parts: high functionality polyurethane acrylate oligomer 15-25 parts, low functionality fluorine-containing acrylate oligomer 5-15 parts, anti-glare particles 1-3 parts, titanium dioxide nanoparticle dispersion liquid 10-20 parts, active monomer 10-20 parts, photoinitiator 2-4 parts, solvent 20-40 parts, leveling agent 1-2 parts, ultraviolet absorber 2-4 parts; The titanium dioxide nanoparticle dispersion liquid is obtained by adding titanium dioxide nanoparticles into an organic solvent and stirring, and the mass content of the titanium dioxide nanoparticles in the titanium dioxide nanoparticle dispersion liquid is 10%-60%.

2. The photocuring hard coat liquid according to claim 1, characterized by The anti-glare particles are one or a combination of at least two of silica inorganic particles, PMMA particles, and PS particles.

3. The photocuring hard coat liquid according to claim 1, characterized by The particle size of the anti-glare particles is 0.3-8 μm.

4. The photocuring hard coat liquid according to claim 1, characterized by The active monomer is selected from one or a combination of at least two of pentaerythritol triacrylate, dipentaerythritol pentaacrylate, and trimethylolpropane trimethacrylate.

5. The photocuring hard coat liquid according to claim 1, characterized by The photoinitiator is selected from one or a combination of at least two of 2-hydroxy-2-methyl-1-phenyl-1-propanone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1-propanone, and 2,4,6-trimethylbenzoyl-diphenylphosphine oxide.

6. The photocuring hard coat liquid according to claim 1, characterized by The leveling agent is selected from one or a combination of at least two of a fluorine-based leveling agent, a silicone alkoxane leveling agent, and a silicone-modified leveling agent.

7. The photocuring hard coat liquid according to claim 1, characterized by The ultraviolet absorber is selected from one or a combination of at least two of benzophenone, benzotriazole, and triazine.

8. An anti-UV anti-glare cover sheet film characterized by, The anti-ultraviolet anti-glare cover plate film comprises a substrate and an anti-ultraviolet anti-glare hard coating layer, and the anti-ultraviolet anti-glare hard coating layer is attached to one surface of the substrate; the anti-ultraviolet anti-glare hard coating layer is formed by the photocuring hard coating liquid according to any one of claims 1-7.

9. The anti-UV anti-glare cover sheet film according to claim 8, characterized in that, The substrate is one of polyethylene terephthalate film, polycarbonate film, or cellulose triacetate film.

10. A method of making an anti-UV glare cover sheet film as claimed in claim 8, characterized in that, The method comprises the following steps: configuring a photocuring hard coating liquid; applying the photocuring hard coating liquid on the substrate; performing desolventization and drying treatment on the coating at a temperature of 80-90°C; curing the dried coating by ionizing radiation active energy rays.

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