Anti-dazzle liquid and preparation method thereof, and anti-dazzle film and preparation method thereof

Abstract

The invention provides an anti-dazzle liquid and a preparation method thereof, and an anti-dazzle film and a preparation method thereof, and belongs to the technical field of optical films. The anti-dazzle liquid comprises micron inorganic particles of which the surfaces are modified with polar groups, UV curing resin with hydroxyl, a high-surface-tension active monomer and a polar solvent; wherein the surface tension of the high-surface-tension active monomer is greater than or equal to 35 dyne / cm. The anti-dazzle liquid is matched for use, the micron inorganic particles can be exposed and protrude out of the outer surface of the anti-dazzle layer after the anti-dazzle liquid is cured, and the high-surface-tension active monomer with the dyne value within the range can be matched with the polar groups for modifying the surfaces of the micron inorganic particles to improve the dyne value of the anti-dazzle layer formed by the anti-dazzle liquid; besides, the UV curing resin with hydroxyl groups can form bonding with polar groups modified on the surfaces of the micron inorganic particles through the hydroxyl groups, and the wear resistance of an anti-dazzle layer formed by the anti-dazzle liquid is improved, so that the anti-dazzle layer formed by the anti-dazzle liquid has high dyne value and friction resistance while having anti-dazzle performance.

Description

Technical Field

[0001] This application relates to the field of optical film technology, and more specifically, to an anti-glare liquid and its preparation method, and an anti-glare film and its preparation method. Background Technology

[0002] Portable consumer electronics (3C products), such as mobile phones, tablets, laptops, and various displays in cars, can experience glare when used outdoors due to strong external sunlight reflecting off the display surface. This glare reduces the image quality and clarity of the display. The main way to reduce this external glare is to apply a hard coating with anti-glare properties to the display surface, causing reflected strong light to scatter at different angles. This anti-glare hard coating needs to have a textured surface to prevent reflected light from ambient light from being reflected in one direction.

[0003] Whether it's a general 3C electronic display or an anti-glare film for automotive displays, they are mainly composed of a combination of multiple film layers. For example, polarizers for LCD displays, screen protectors, or 3A explosion-proof films for automotive displays are all made up of multiple layers of film materials to achieve different optical functions and effects. The processing between various multilayer film materials, including recoating, coating, ink printing, and optical adhesive bonding, requires the coating surface to have a high dyne value so that the subsequent coating has good adhesion and weather resistance. In hard coatings with anti-glare properties, the main approach is to add various micron-sized particles (including inorganic particles, organic particles, or combinations of various particles) into the coating to form protrusions on the surface of the hard coating. To ensure good dispersion of these micron-sized particles in the coating and prevent aggregation or sedimentation during the coating process, the surface of the micron-sized particles usually needs to be hydrophobically treated to achieve good dispersion in the resin. However, when the hydrophobically treated microparticles protrude from the coating surface, the hydrophobic treatment will significantly reduce the dyne value of the coating. This reduces interlayer adhesion and weather resistance for subsequent processing, including recoating, film coating, and printing. Summary of the Invention

[0004] This application provides an anti-glare liquid and its preparation method, as well as an anti-glare film and its preparation method, which can enable the anti-glare film to have anti-glare properties while improving the dyne value of the anti-glare film and its friction resistance.

[0005] The embodiments of this application are implemented as follows: In a first aspect, this application provides an anti-glare liquid comprising micron-sized inorganic particles with polar groups modified on their surface, a resin matrix, and a polar solvent; wherein the resin matrix comprises a UV-curable resin with hydroxyl groups, a UV-curable resin with 6-12 functional groups, and a high surface tension active monomer; the surface tension of the high surface tension active monomer is ≥35 dyne / cm.

[0006] In the above technical solution, the anti-glare liquid of this application uses micron-sized inorganic particles with polar groups modified on the surface, a UV-curable resin with hydroxyl groups, a high surface tension active monomer, and a polar solvent in combination. The micron-sized inorganic particles can be exposed and protrude from the outer surface of the anti-glare layer after the anti-glare liquid is cured. The high surface tension active monomer with a dyne value in the above range can cooperate with the polar groups modified on the surface of the micron-sized inorganic particles to improve the dyne value of the anti-glare layer formed by the anti-glare liquid. In addition, the UV-curable resin with hydroxyl groups can form bonds with the polar groups modified on the surface of the micron-sized inorganic particles through hydroxyl groups, thereby improving the wear resistance of the anti-glare layer formed by the anti-glare liquid. Thus, the anti-glare layer formed by the anti-glare liquid has both anti-glare properties and high dyne value and wear resistance.

[0007] In some possible embodiments, the polar group includes at least one of hydroxyl, amino, and carboxyl groups; and / or, the micron-sized inorganic particles include at least one of silica, alumina, titanium dioxide, zirconium oxide, and zinc oxide; and / or, the original particle size of the micron-sized inorganic particles is 1.0 μm to 4.0 μm; and / or, the secondary average particle size of the micron-sized inorganic particles is 1.5 μm to 4.0 μm; and / or, the secondary particle size span of the micron-sized inorganic particles is ≤1.2; and / or, the refractive index of the micron-sized inorganic particles is 1.45 to 1.65; and / or, the mass percentage of the micron-sized inorganic particles modified with polar groups in the resin matrix is ​​1 wt% to 10 wt%.

[0008] In the above technical solution, the polar groups can improve the dyne value of the anti-glare layer; by ensuring that at least one of the original particle size, secondary average particle size, and secondary particle size span of the micron inorganic particles is within the above range, it is beneficial to ensure that the anti-glare layer formed by the anti-glare liquid has good anti-glare properties and a low flash point; by ensuring that the refractive index of the micron inorganic particles is within the above range, it is possible to avoid the overall whitening of the anti-glare layer obtained in subsequent preparation.

[0009] In some possible implementations, the hydroxyl-containing UV-curable resin includes at least one of polyurethane acrylate, epoxy acrylate, polyester acrylate and pure acrylic acid; and / or, the hydroxyl value of the hydroxyl-containing UV-curable resin is ≥100; and / or, the hydroxyl-containing UV-curable resin accounts for 10wt% to 40wt% of the resin matrix by mass.

[0010] In the above technical solution, the hydroxyl-containing UV-curable resin can form bonds with the polar groups modified on the surface of micron-sized inorganic particles through hydroxyl groups, thereby improving the wear resistance of the anti-glare layer formed by the anti-glare liquid; by keeping the hydroxyl value of the hydroxyl-containing UV-curable resin within the above range, it is beneficial to further improve the wear resistance of the anti-glare layer formed by the anti-glare liquid.

[0011] In some possible embodiments, the high surface tension active monomer includes at least one of monofunctional monomers, difunctional monomers, trifunctional monomers, and tetrafunctional or higher monomers; wherein, the monofunctional monomer includes at least one of monofunctional octadecyl methacrylate, tetrahydrofuran, benzyl acrylate, acryloylmorpholine, 2-phenoxyethyl acrylate, and N,N-dimethylacryloyl; the difunctional monomer includes difunctional 2(ethoxy)1,6-hexanediol diacrylate, ethoxybisphenol A diacrylate, tricyclodecanedimethyl diacrylate, polyethylene glycol (600) diacrylate, polyethylene glycol (400) diacrylate, and polyethylene glycol (200) diacrylate. The resin matrix contains at least one of the following: 1,6-hexanediol diacrylate, diethylene glycol diacrylate, diethylene glycol diacrylate phthalate, and triethylene glycol diacrylate; trifunctional monomers include at least one of the following: trifunctional trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, 15(ethoxy)trimethylolpropane triacrylate, (propoxy)glycerol triacrylate, and pentaerythritol triacrylate; tetrafunctional and higher monomers include at least one of the following: tetrafunctional and higher bis(trimethylolpropane)tetraacrylate and bis(pentaerythritol)hexaacrylate; and / or, the high surface tension reactive monomers constitute 10 wt% to 30 wt% of the resin matrix by mass.

[0012] In the above technical solution, the high surface tension active monomer can cooperate with the polar groups modified on the surface of micron-sized inorganic particles to improve the dyne value of the anti-glare layer.

[0013] In some possible embodiments, the polar solvent includes alcohol solvents, ketone solvents, ester solvents, and aromatic solvents; optionally, the alcohol solvent includes isopropanol, n-butanol, isobutanol, and propylene glycol methyl ether; optionally, the ketone solvent includes methyl ethyl ketone, methyl isobutyl ketone, cyclopentanone, and cyclohexanone; optionally, the ester solvent includes ethyl acetate, propyl acetate, and butyl acetate; optionally, the aromatic solvent includes benzene, toluene, and xylene; optionally, the polarity of the polar solvent is ≥3.5.

[0014] In the above technical solution, the polar solvent is beneficial to the uniform dispersion of micron-sized inorganic particles with polar groups on the surface, and avoids partial agglomeration of micron-sized inorganic particles to form flash points, thereby improving the display quality of the anti-glare film.

[0015] In some possible implementations, the anti-glare liquid further includes a leveling agent and a photoinitiator; optionally, the leveling agent includes at least one of a fluorinated leveling agent, an organosiloxane leveling agent, a pure acrylic leveling agent, and a polyester-modified acrylic leveling agent; optionally, the photoinitiator includes a pyrolysis photoinitiator and / or a hydrogen abstraction photoinitiator; optionally, the leveling agent accounts for 0.1wt% to 0.5wt% of the anti-glare liquid by mass; optionally, the photoinitiator accounts for 3wt% to 6wt% of the resin matrix by mass.

[0016] In the above technical solution, by selecting the leveling agent, it is not only beneficial to improve the leveling effect of the anti-glare liquid, but also beneficial to improve the dyne value of the anti-glare layer formed by the anti-glare liquid.

[0017] In a second aspect, this application provides a method for preparing the anti-glare liquid in the above embodiments, which includes mixing raw materials containing micron-sized inorganic particles with surface-modified polar groups, a resin matrix, and a polar solvent.

[0018] In the above technical solution, the method for preparing the anti-glare liquid of this application is to directly mix raw materials containing micron-sized inorganic particles with polar groups modified on the surface, resin matrix and polar solvent to obtain the anti-glare liquid. The preparation method is simple. The micron-sized inorganic particles can be exposed and protrude from the outer surface of the anti-glare layer after the anti-glare liquid is cured. The high surface tension active monomer with a dyne value in the above range can cooperate with the polar groups modified on the surface of the micron-sized inorganic particles to improve the dyne value of the anti-glare layer formed by the anti-glare liquid. In addition, the UV-curable resin with hydroxyl groups can form bonds with the polar groups modified on the surface of the micron-sized inorganic particles through hydroxyl groups, which improves the wear resistance of the anti-glare layer formed by the anti-glare liquid. Thus, the anti-glare layer formed by the anti-glare liquid has both anti-glare properties and high dyne value and wear resistance.

[0019] In a third aspect, this application provides a method for preparing an anti-glare film, which includes first setting an anti-glare liquid on the surface of a base film, and then UV curing the dried anti-glare liquid to form an anti-glare layer. The anti-glare liquid includes micron-sized inorganic particles with polar groups modified on their surface, a resin matrix, and a polar solvent. The resin matrix includes a UV-curable resin with hydroxyl groups, a UV-curable resin with 6 to 12 functional groups, and a high surface tension active monomer. The surface tension of the high surface tension active monomer is ≥35 dyne / cm.

[0020] In the above technical solution, the method for preparing the anti-glare film of this application forms an anti-glare layer by UV curing anti-glare liquid. The process is controllable. Micron-sized inorganic particles can be exposed and protrude from the outer surface of the anti-glare layer after the anti-glare liquid is cured. High surface tension active monomers with dyne values ​​within the above range can cooperate with the polar groups modified on the surface of micron-sized inorganic particles to improve the dyne value of the anti-glare film. In addition, UV-curable resin with hydroxyl groups can form bonds with the polar groups modified on the surface of micron-sized inorganic particles through hydroxyl groups, thereby improving the wear resistance of the anti-glare film. Thus, the anti-glare film has both anti-glare properties and high dyne value and wear resistance.

[0021] In some possible embodiments, the polar group includes at least one of hydroxyl, amino, and carboxyl groups; and / or, the micron-sized inorganic particles include at least one of silica, alumina, titanium dioxide, zirconium oxide, and zinc oxide; and / or, the original particle size of the micron-sized inorganic particles is 1.0 μm to 4.0 μm; and / or, the secondary average particle size of the micron-sized inorganic particles is 1.5 μm to 4.0 μm; and / or, the secondary particle size span of the micron-sized inorganic particles is ≤1.2; and / or, the refractive index of the micron-sized inorganic particles is 1.45 to 1.65; and / or, the proportion of micron-sized inorganic particles modified with polar groups is... The resin matrix comprises 1 wt% to 10 wt% by mass; and / or, the hydroxyl-containing UV-curable resin includes at least one of polyurethane acrylates, epoxy acrylates, polyester acrylates, and pure acrylic acid; and / or, the hydroxyl-containing UV-curable resin has a hydroxyl value ≥ 100; and / or, the hydroxyl-containing UV-curable resin comprises 10 wt% to 40 wt% by mass of the resin matrix; and / or, the high surface tension reactive monomer includes at least one of monofunctional monomers, difunctional monomers, trifunctional monomers, and tetrafunctional or higher monomers; wherein, monofunctional monomers include monofunctional... The monomer comprises at least one of octadecyl methacrylate, tetrahydrofuran, benzyl acrylate, acryloylmorpholine, 2-phenoxyethyl acrylate, and N,N-dimethylacryloyl; the bifunctional monomer includes bifunctional 2(ethoxy)-1,6-hexanediol diacrylate, ethoxybisphenol A diacrylate, tricyclodecanediethanol diacrylate, polyethylene glycol (600) diacrylate, polyethylene glycol (400) diacrylate, polyethylene glycol (200) diacrylate, 1,6-hexanediol diacrylate, diethylene glycol diacrylate, diethylene glycol diacrylate, and triethylene glycol. At least one of the following diacrylates; trifunctional monomers including at least one of the following: trifunctional trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, 15(ethoxy)trimethylolpropane triacrylate, (propoxy)glycerol triacrylate, and pentaerythritol triacrylate; tetrafunctional and above monomers including at least one of the following: tetrafunctional and above bis(trimethylolpropane tetraacrylate) and bis(pentaerythritol hexaacrylate); and / or, the high surface tension reactive monomer accounts for 10wt% to 30wt% of the resin matrix by mass; and / or, the polarity of the polar solvent is ≥3.5.

[0022] In a fourth aspect, this application provides an anti-glare film prepared according to the method for preparing the anti-glare film in the above embodiments.

[0023] In the above technical solution, the micron-sized inorganic particles in the anti-glare film of this application can be exposed and protrude from the outer surface of the anti-glare layer after the anti-glare liquid is cured. The high surface tension active monomer with a dyne value in the above range can cooperate with the polar groups modified on the surface of the micron-sized inorganic particles to improve the dyne value of the anti-glare film. In addition, the UV-curable resin with hydroxyl groups can form bonds with the polar groups modified on the surface of the micron-sized inorganic particles through hydroxyl groups, thereby improving the wear resistance of the anti-glare film. Thus, the anti-glare film has both anti-glare properties and high dyne value and wear resistance. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the anti-glare film according to an embodiment of this application; Figure 2 This is a diagram illustrating the modification mechanism of the micron-sized silane coupling agent in dispersion-4 in the embodiments of this application.

[0026] Icons: 100 - Anti-glare film; 110 - Anti-glare layer; 120 - Base film. Detailed Implementation

[0027] The embodiments of this application will be described in detail below with reference to examples. However, those skilled in the art will understand that the following examples are for illustrative purposes only and should not be considered as limiting the scope of this application. Unless otherwise specified in the examples, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all commercially available conventional products.

[0028] The following provides a detailed description of an anti-glare liquid and its preparation method, as well as an anti-glare film and its preparation method, based on embodiments of this application: This application provides an anti-glare liquid, comprising micron-sized inorganic particles with polar groups modified on their surface, a resin matrix, and a polar solvent.

[0029] Optionally, the polar group includes at least one of hydroxyl, amino, and carboxyl groups. These polar groups can increase the dyne value of the anti-glare layer.

[0030] Optionally, the micron-sized inorganic particles include at least one of silicon dioxide, aluminum oxide, titanium dioxide, zirconium oxide, and zinc oxide.

[0031] It should be noted that micron-sized inorganic particles can be surface-modified with polar groups using silane coupling agents. The silane coupling agent has an easily hydrolyzed active group at one end and an amino group at the other end. Specifically, the silane coupling agent is at least one of N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, N-(2-aminoethyl)-3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, and N-phenyl-3-aminopropyltrimethoxysilane.

[0032] Optionally, the original particle size of the micron-sized inorganic particles is 1.0 μm to 4.0 μm.

[0033] Optionally, the secondary average particle size of the micron-sized inorganic particles is 1.5 μm to 4.0 μm.

[0034] Optionally, the secondary particle size span of the micron-sized inorganic particles is ≤1.2.

[0035] This application ensures that the anti-glare layer formed by the anti-glare liquid has good anti-glare properties and a low flash point by making at least one of the original particle size, secondary average particle size, and secondary particle size span of the micron inorganic particles within the above-mentioned range.

[0036] Optionally, the micron-sized inorganic particles are hydrophilic inorganic particles, which are at least one of hydrophilic silica, hydrophilic alumina, hydrophilic titanium dioxide, hydrophilic zirconium oxide, and hydrophilic zinc oxide.

[0037] Optionally, the refractive index of the micron-sized inorganic particles is 1.45 to 1.65.

[0038] This application avoids the overall whitening of the anti-glare layer obtained in subsequent preparation by ensuring that the refractive index of the micron-sized inorganic particles is within the above-mentioned range.

[0039] Optionally, the mass percentage of the micron-sized inorganic particles modified with polar groups in the resin matrix is ​​1 wt% to 10 wt%.

[0040] The resin matrix includes UV-curable resins with hydroxyl groups, UV-curable resins with 6 to 12 functional groups, and high surface tension active monomers.

[0041] Optionally, the hydroxyl-containing UV-curable resin includes at least one of polyurethane acrylates, epoxy acrylates, polyester acrylates, and pure acrylic acid.

[0042] The aforementioned hydroxyl-containing UV-curable resin package can form bonds with polar groups modified on the surface of micron-sized inorganic particles through hydroxyl groups, thereby improving the wear resistance of the anti-glare layer formed by the anti-glare liquid.

[0043] Optionally, the hydroxyl value of the UV-curable resin containing hydroxyl groups is ≥100.

[0044] This application improves the wear resistance of the anti-glare layer formed by the anti-glare liquid by ensuring that the hydroxyl value of the UV-curable resin with hydroxyl groups is within the above-mentioned range.

[0045] Optionally, the hydroxyl-containing UV-curable resin accounts for 10wt% to 40wt% of the resin matrix by mass.

[0046] The surface tension of the high surface tension active monomer is ≥35 dyne / cm.

[0047] Optionally, the high surface tension active monomer includes at least one of monofunctional monomers, difunctional monomers, trifunctional monomers, and tetrafunctional or higher monomers.

[0048] The monofunctional monomers include at least one of monofunctional octadecyl methacrylate, tetrahydrofuran, benzyl acrylate, acryloylmorpholine, 2-phenoxyethyl acrylate, and N,N-dimethylacryloyl; the bifunctional monomers include bifunctional 2(ethoxy)-1,6-hexanediol diacrylate, ethoxybisphenol A diacrylate, tricyclodecanediethanol diacrylate, polyethylene glycol (600) diacrylate, polyethylene glycol (400) diacrylate, polyethylene glycol (200) diacrylate, and 1,6-hexanediol diacrylate. At least one of diethylene glycol diacrylate, diethylene glycol diacrylate phthalate, and diethylene glycol diacrylate; trifunctional monomers include one or more of trifunctional trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, 15(ethoxy)trimethylolpropane triacrylate, (propoxy)glycerol triacrylate, and pentaerythritol triacrylate; tetrafunctional and higher monomers include one or more of tetrafunctional and higher bis(trimethylolpropane tetraacrylate) and bis(pentaerythritol hexaacrylate.

[0049] The aforementioned high surface tension active monomers can combine with polar groups modified on the surface of micron-sized inorganic particles to improve the dyne value of the anti-glare layer.

[0050] Optionally, the high surface tension active monomer accounts for 10wt% to 30wt% of the resin matrix by mass.

[0051] Polar solvents include alcohol solvents, ketone solvents, ester solvents, and aromatic solvents.

[0052] Optionally, alcohol solvents include isopropanol, n-butanol, isobutanol, and propylene glycol methyl ether.

[0053] Optionally, ketone solvents include methyl ethyl ketone, methyl isobutyl ketone, cyclopentanone, and cyclohexanone.

[0054] Optionally, the ester solvent includes ethyl acetate, propyl acetate, and butyl acetate.

[0055] Optionally, aromatic solvents include benzene, toluene, and xylene.

[0056] The aforementioned polar solvents facilitate the uniform dispersion of micron-sized inorganic particles with polar groups on the surface, UV-curable resins with hydroxyl groups, and high surface tension active monomers, thereby improving the anti-glare performance of the anti-glare layer.

[0057] Optionally, the polarity of the polar solvent is ≥3.5.

[0058] Optionally, in order to ensure that the anti-glare particles with polar functional groups can be uniformly dispersed in the coating liquid, the polar solvent includes at least one of isobutanol (IBA), n-butanol (NBA), butyl acetate, n-propanol (NPA), methyl isobutyl ketone (MIBK), ethyl acetate, isopropanol (IPA), and methyl ethyl ketone (MEK).

[0059] The aforementioned polar solvents facilitate the uniform dispersion of micron-sized inorganic particles with polar groups on their surfaces, preventing partial agglomeration of micron-sized inorganic particles and the formation of flash points, thereby improving the display quality of the anti-glare film.

[0060] In order for the anti-glare hard coating to undergo a cross-linking reaction during the photocuring process, a photoinitiator needs to be added to the optical hard coating. The photoinitiator includes a pyrolysis type photoinitiator and / or a hydrogen abstraction type photoinitiator.

[0061] The cleavage initiator can be one or more of 1-hydroxycyclohexylphenyl ketone (184), 2-hydroxy-methylphenylpropane-1-one (1173), 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone (907), benzoin dimethyl ether (651), and 2,4,6-(trimethylbenzoyl)diphenylphosphine oxide (TPO). Photoinitiator (Hydrogen-abstracting type) can be one or both of xylene ketone (BP) and 2-isopropylthioxanthone (ITX). If the photoinitiator is 1-hydroxycyclohexylphenyl ketone (184), it can promote better crosslinking.

[0062] Optionally, the photoinitiator accounts for 3 wt% to 6 wt% of the resin matrix by mass.

[0063] The anti-glare liquid also includes a leveling agent, which includes at least one of fluorinated leveling agents, organosiloxane leveling agents, pure acrylic leveling agents, and polyester-modified acrylic leveling agents.

[0064] Optionally, the leveling agent includes pure acrylic leveling agents and / or polyester-modified acrylic leveling agents, which can improve the dyne value of the anti-glare layer.

[0065] Optionally, the leveling agent includes at least one of BYK-358N, BYK-361N, BYK-3550, BYK-3560, BYK-3565, BYK-UV 3566, and BYK-UV 3568 from BYK Chemicals; FTERGENT 602A from Neos Chemicals; SEI-1501, SEI-1502, and SEI-1503 from Kusumoto Chemicals; and Sago-3640 from Sangco Chemicals.

[0066] By selecting the aforementioned leveling agent, not only can the leveling effect of the anti-glare liquid be improved, but the dyne value of the anti-glare layer formed by the anti-glare liquid can also be increased.

[0067] Optionally, the leveling agent accounts for 0.1wt% to 0.5wt% of the mass of the anti-glare liquid.

[0068] Hydrophilic inorganic particles, due to their large specific surface area, are in a thermodynamically unstable state, exhibiting high activity, strong water absorption, and a high tendency to agglomerate. Therefore, they tend to be unevenly distributed in hydrophobic UV coatings, and the agglomerated particles also tend to have uneven particle sizes, easily leading to flash points when coated as an anti-glare layer. Therefore, in this application, the surface of hydrophilic inorganic particles is modified to obtain inorganic particles with polar functional groups containing amino and carboxyl groups. These particles are then dispersed in a highly polar solvent, which reduces agglomeration and makes the particle size distribution more uniform, resulting in a more uniform distribution and lower flash point in the coating. Furthermore, when forming an anti-glare layer, the exposed polar functional groups on the particle surface of these inorganic particles, containing hydroxyl, amino, and carboxyl groups, achieve a higher coating dyne value. Simultaneously, these polar functional groups can form strong bonds with hydroxyl-containing UV resins, improving the abrasion resistance of the anti-glare layer.

[0069] This application also provides a method for preparing the anti-glare liquid in the above embodiments, which includes mixing raw materials containing micron-sized inorganic particles with polar groups modified on their surfaces, a resin matrix, and a polar solvent.

[0070] The method for preparing the anti-glare liquid of this application involves directly mixing raw materials containing micron-sized inorganic particles with surface-modified polar groups, a resin matrix, and a polar solvent to obtain the anti-glare liquid. The preparation method is simple. The micron-sized inorganic particles can be exposed and protrude from the outer surface of the anti-glare layer after the anti-glare liquid is cured. The high surface tension active monomer with a dyne value within the above-mentioned range can cooperate with the polar groups modified on the surface of the micron-sized inorganic particles to improve the dyne value of the anti-glare layer formed by the anti-glare liquid. In addition, the UV-curable resin with hydroxyl groups can form bonds with the polar groups modified on the surface of the micron-sized inorganic particles through hydroxyl groups, thereby improving the wear resistance of the anti-glare layer formed by the anti-glare liquid. Thus, the anti-glare layer formed by the anti-glare liquid has both anti-glare properties and high dyne value and wear resistance.

[0071] This application also provides a method for preparing an anti-glare film, which includes first setting an anti-glare liquid on the surface of a base film, and then UV curing the dried anti-glare liquid to form an anti-glare layer. The anti-glare liquid includes micron-sized inorganic particles with polar groups modified on the surface, a resin matrix, and a polar solvent. The resin matrix includes a UV-curable resin with hydroxyl groups, a UV-curable resin with 6 to 12 functional groups, and a high surface tension active monomer. The surface tension of the high surface tension active monomer is ≥35 dyne / cm.

[0072] The base film is a transparent film layer, including at least one of polyethylene terephthalate film (PET), norbornene film (COP), cellulose triacetate film (TAC), super phase difference polyester film (SRF), colorless transparent polyimide film (CPI), polycarbonate film (PC), and polymethyl methacrylate film (PMMA).

[0073] Optionally, the thickness of the base film is 25μm~250μm.

[0074] Methods for applying anti-glare liquid to the base film surface include bar coating, slotdie coating, and micro-gravure coating.

[0075] Choosing microgravure coating or slot coating methods can improve the coating effect.

[0076] Optionally, the drying temperature is 80℃~100℃ and the drying time is 1min~2min.

[0077] Optionally, the UV curing energy is 400 mJ / cm. 2 ~600mJ / cm 2 .

[0078] Optionally, the polar group includes at least one of hydroxyl, amino, and carboxyl groups.

[0079] Optionally, the micron-sized inorganic particles include at least one of silicon dioxide, aluminum oxide, titanium dioxide, zirconium oxide, and zinc oxide.

[0080] Optionally, the original particle size of the micron-sized inorganic particles is 1.0 μm to 4.0 μm.

[0081] Optionally, the secondary average particle size of the micron-sized inorganic particles is 1.5 μm to 4.0 μm.

[0082] Optionally, the secondary particle size span of the micron-sized inorganic particles is ≤1.2.

[0083] Optionally, the refractive index of the micron-sized inorganic particles is 1.45 to 1.65.

[0084] Optionally, the mass percentage of the micron-sized inorganic particles modified with polar groups in the resin matrix is ​​1 wt% to 10 wt%.

[0085] Optionally, the hydroxyl-containing UV-curable resin includes at least one of polyurethane acrylates, epoxy acrylates, polyester acrylates, and pure acrylic acid.

[0086] Optionally, the hydroxyl value of the UV-curable resin containing hydroxyl groups is ≥100.

[0087] Optionally, the hydroxyl-containing UV-curable resin accounts for 10wt% to 40wt% of the resin matrix by mass.

[0088] Optionally, the high surface tension active monomer includes at least one of monofunctional monomers, difunctional monomers, trifunctional monomers, and tetrafunctional or higher monomers; wherein, the monofunctional monomer includes at least one of monofunctional octadecyl methacrylate, tetrahydrofuran, benzyl acrylate, acryloylmorpholine, 2-phenoxyethyl acrylate, and N,N-dimethylacryloyl; the difunctional monomer includes difunctional 2(ethoxy)1,6-hexanediol diacrylate, ethoxybisphenol A diacrylate, tricyclodecanedimethyl diacrylate, polyethylene glycol (600) diacrylate, polyethylene glycol (400) diacrylate, etc. At least one of polyethylene glycol (200) diacrylate, 1,6-hexanediol diacrylate, diethylene glycol diacrylate, diethylene glycol diacrylate phthalate, and diethylene glycol diacrylate; trifunctional monomers include at least one of trifunctional trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, 15(ethoxy)trimethylolpropane triacrylate, (propoxy)glycerol triacrylate, and pentaerythritol triacrylate; tetrafunctional and above monomers include at least one of tetrafunctional and above bis(trimethylolpropane)tetraacrylate and bis(pentaerythritol)hexaacrylate.

[0089] Optionally, the high surface tension active monomer accounts for 10wt% to 30wt% of the resin matrix by mass.

[0090] Optionally, the polarity of the polar solvent is ≥3.5.

[0091] The method for preparing the anti-glare film of this application involves forming an anti-glare layer through UV-cured anti-glare liquid. The process is controllable, and micron-sized inorganic particles can be exposed and protrude from the outer surface of the anti-glare layer after the anti-glare liquid is cured. High surface tension active monomers with dyne values ​​within the above-mentioned range can cooperate with the polar groups modified on the surface of the micron-sized inorganic particles to improve the dyne value of the anti-glare film. In addition, the UV-cured resin with hydroxyl groups can form bonds with the polar groups modified on the surface of the micron-sized inorganic particles through hydroxyl groups, thereby improving the wear resistance of the anti-glare film. Thus, the anti-glare film has both anti-glare properties and high dyne value and abrasion resistance.

[0092] This application also provides an anti-glare film, which is prepared according to the method for preparing the anti-glare film in the above embodiments.

[0093] Please see Figure 1 The anti-glare film 100 includes an anti-glare layer 110 and a base film 120 arranged in layers, and micron-sized inorganic particles in the anti-glare layer 110 protrude from the outer surface of the anti-glare layer.

[0094] The micron-sized inorganic particles in the anti-glare film of this application can be exposed and protrude from the outer surface of the anti-glare layer after the anti-glare liquid is cured. The high surface tension active monomer with a dyne value in the above range can cooperate with the polar groups modified on the surface of the micron-sized inorganic particles to improve the dyne value of the anti-glare film. In addition, the UV-curable resin with hydroxyl groups can form bonds with the polar groups modified on the surface of the micron-sized inorganic particles through hydroxyl groups, thereby improving the wear resistance of the anti-glare film. Thus, the anti-glare film has both anti-glare properties and high dyne value and wear resistance.

[0095] The following describes in further detail an anti-glare liquid and its preparation method, as well as an anti-glare film and its preparation method, based on embodiments of the present application.

[0096] Examples 1-11 This application provides an anti-glare liquid and its preparation method, and an anti-glare film and its preparation method, which include the following steps: S1. Preparation of anti-glare liquid An anti-glare liquid is prepared by uniformly mixing a microparticle dispersion (15%), a UV-curable resin with 6-12 functional groups, a UV-curable resin with hydroxyl groups, a high surface tension active monomer, an initiator, a leveling agent, and the remaining polar solvent. The microparticle dispersion includes micron-sized inorganic particles with polar groups modified on their surface, and the surface tension of the high surface tension active monomer is ≥35 dyne / cm.

[0097] S2. Preparation of anti-glare film An anti-glare liquid prepared by slit coating was applied to the surface of a base film, dried at 90°C for 90 seconds, and then UV-cured at an energy of 500 mJ / cm². 2 UV curing under certain conditions yields an anti-glare film.

[0098] Comparative Example 1 This application provides, by comparison, an anti-glare liquid and its preparation method, and an anti-glare film and its preparation method, which include the following steps: S1. Preparation of anti-glare liquid An anti-glare liquid is prepared by uniformly mixing a microparticle dispersion (15%), a UV-curable resin with 6-12 functional groups, a UV-curable resin with hydroxyl groups, a high surface tension active monomer, an initiator, a leveling agent, and the remaining polar solvent. The microparticle dispersion includes micron-sized inorganic particles, and the surface tension of the high surface tension active monomer is ≥35 dyne / cm.

[0099] S2. Preparation of anti-glare film An anti-glare liquid prepared by slit coating was applied to the surface of a base film, dried at 90°C for 90 seconds, and then UV-cured at an energy of 500 mJ / cm². 2 UV curing under certain conditions yields an anti-glare film.

[0100] Comparative Example 2 This application provides, by comparison, an anti-glare liquid and its preparation method, and an anti-glare film and its preparation method, which include the following steps: S1. Preparation of anti-glare liquid An anti-glare liquid is prepared by uniformly mixing a microparticle dispersion (15%), a UV-curable resin with 6-12 functional groups, a high surface tension active monomer, and the remaining polar solvent. The microparticle dispersion includes micron-sized inorganic particles with polar groups modified on their surface, and the surface tension of the high surface tension active monomer is ≥35 dyne / cm.

[0101] S2. Preparation of anti-glare film An anti-glare liquid prepared by slit coating was applied to the surface of a base film, dried at 90°C for 90 seconds, and then UV-cured at an energy of 500 mJ / cm². 2 UV curing under certain conditions yields an anti-glare film.

[0102] Comparative Example 3 This application provides, by comparison, an anti-glare liquid and its preparation method, and an anti-glare film and its preparation method, which include the following steps: S1. Preparation of anti-glare liquid An anti-glare liquid is prepared by uniformly mixing a microparticle dispersion (15%), a UV-curable resin with 6-12 functional groups, a UV-curable resin with hydroxyl groups, a high surface tension active monomer, an initiator, a leveling agent, and the remaining non-polar solvent. The microparticle dispersion includes micron-sized inorganic particles, and the surface tension of the high surface tension active monomer is ≥35 dyne / cm.

[0103] S2. Preparation of anti-glare film An anti-glare liquid prepared by slit coating was applied to the surface of a base film, dried at 90°C for 90 seconds, and then UV-cured at an energy of 500 mJ / cm². 2 UV curing under certain conditions yields an anti-glare film.

[0104] Comparative Example 4 This application provides, by comparison, an anti-glare liquid and its preparation method, and an anti-glare film and its preparation method, which include the following steps: S1. Preparation of anti-glare liquid An anti-glare liquid is prepared by uniformly mixing a microparticle dispersion (15%), a UV-curable resin with 6-12 functional groups, a UV-curable resin with hydroxyl groups, an active monomer, an initiator, a leveling agent, and the remaining polar solvent. The microparticle dispersion includes micron-sized inorganic particles, and the surface tension of the high-surface-tension active monomer is <35 dyne / cm.

[0105] S2. Preparation of anti-glare film An anti-glare liquid prepared by slit coating was applied to the surface of a base film, dried at 90°C for 90 seconds, and then UV-cured at an energy of 500 mJ / cm². 2 UV curing under certain conditions yields an anti-glare film.

[0106] The formulations of Examples 1-11 and Comparative Examples 1-4 are shown in Tables 1-15.

[0107] Table 1 Formulation of Example 1

[0108] Table 2 Formulation table for Example 2

[0109] Table 3 Formulation table for Example 3

[0110] Table 4 Formulation table for Example 4

[0111] Table 5. Formulation of Example 5

[0112] Table 6 Formulation table for Example 6

[0113] Table 7 Formulation of Example 7

[0114] Table 8 Formulation table for Example 8

[0115] Table 9 Formulation table for Example 9

[0116] Table 10 Formulation table for Example 10

[0117] Table 11 Formulation of Example 11

[0118] Table 12 Formulation of Comparative Example 1

[0119] Table 13 Formulation of Comparative Example 2

[0120] Table 14 Formulation of Comparative Example 3

[0121] Table 15 Formulation of Comparative Example 4

[0122] The raw material parameters for Examples 1-11 and Comparative Examples 1-4 are shown in Table 16.

[0123] Table 16 Raw material parameters of Examples 1-11 and Comparative Examples 1-4

[0124] The base films of Examples 1-6, 10-11 and Comparative Examples 1-4 were selected from Hyosung PG601S TAC of South Korea, 60 μm; the base films of Examples 7-9 were selected from Toray U48 of Japan, 100 μm PET.

[0125] The preparation method of dispersion-1 is as follows: Take 15 grams of Japanese Fuji Silicon Sylysia 310P silicon powder and put it into 85 grams of butyl acetate. Add 1.8 grams of TEGO Dispers 685 dispersant and stir manually until uniform. After ultrasonic dispersion for 3 hours, the average particle size D50 was measured to be 3.547 μm and the span was 1.135. This is the anti-glare particle dispersion-1.

[0126] The preparation method of dispersion-2 is as follows: Take 100g of hydrophilic silica powder Nipsil E-220A (original particle size 1.5μm) with hydroxyl groups on the surface from Tosoh Chemical Co., Ltd. of Japan, and place it in 850g of toluene. Disperse it ultrasonically for 30 minutes, and titrate with ammonia water to control the pH value of the solution between 10 and 10.5. After heating to 60℃, take 10g of aminosilane coupling agent KBM-903 from Shin-Etsu Chemical Co., Ltd. of Japan, and mix it with 50g of toluene in advance. Slowly add this KBM-903 and toluene mixture to the above silica and toluene mixture. After stirring and reacting for 4 hours, wash twice with toluene and ethanol, and dry under vacuum at 90-110℃ for 10-12 hours to obtain amino-modified silica micropowder. Take 15 grams of the modified silica powder and add it to 85 grams of ethyl acetate. Add 1.8 grams of TEGODispers 685 dispersant and stir manually until homogeneous. After ultrasonic dispersion for 3 hours, the average particle size D50 is measured to be 2.86 μm with a span of 1.107. This is the anti-glare particle dispersion-2. The structural formula of KBM-903 is as follows:

[0127] The preparation method of dispersion-3 is as follows: Take 100g of hydrophilic silica powder Nipsil E-220A (original particle size 1.5μm) with hydroxyl groups on the surface from Tosoh Chemical Co., Ltd. of Japan, and place it in 850g of toluene. Disperse it ultrasonically for 30 minutes, and titrate with ammonia water to control the pH value of the solution between 10 and 10.5. After heating to 60℃, take 10g of aminosilane coupling agent KBE-903 from Shin-Etsu Chemical Co., Ltd. of Japan, and mix it with 50g of toluene. Slowly add this KBM-603 and toluene mixture to the above silica and toluene mixture. After stirring and reacting for 6 hours, wash twice with toluene and ethanol, and dry under vacuum at 90-110℃ for 10-12 hours to obtain amino-modified silica micropowder. Take 15 grams of the modified silica powder and add it to 85 grams of ethyl acetate. Add 1.8 grams of TEGODispers 685 dispersant and stir manually until homogeneous. After ultrasonic dispersion for 3 hours, the average particle size D50 is measured to be 2.95 μm with a span of 0.875. This is the anti-glare particle dispersion-3. The structural formula of KBE-903 is as follows:

[0128] The preparation method of dispersion-4 is as follows: 11.7 g of KBM-903 aminosilane coupling agent and 5.0 g of succinic anhydride were uniformly mixed in 985 g of N,N-dimethylformamide (DMF) solvent. The mixture was magnetically stirred for 1 hour. Then, 20 g of Nipsil E-220A DMF suspension (previously ultrasonically dispersed for 2 hours) was added, along with 2 g of deionized water. The mixture was magnetically stirred for another 4 hours. Silica was then separated using an ultra-high-speed centrifuge. After multiple alcohol washings and centrifugation, carboxyl-modified silica micropowder was obtained. 15 g of the modified silica powder was placed in 85 g of ethyl acetate, and 1.8 g of TEGO Dispers 685 dispersant was added. The mixture was manually stirred until homogeneous and ultrasonically dispersed for 3 hours. The secondary average particle size D50 was measured to be 2.98 μm, with a span of 0.922. This is the anti-glare particle dispersion-4. The silane coupling agent modification mechanism diagram is shown below. Figure 2 As shown.

[0129] The preparation method of dispersion-5 is as follows: Take 15 grams of Japanese Fuji Silicon Sylophobic S100 silicon powder and put it into 85 grams of butyl acetate. Add 1.8 grams of TEGO Dispers 685 dispersant, stir manually until uniform, and disperse ultrasonically for 3 hours. The average particle size D50 is measured to be 3.545 μm and the span is 1.575. This is the anti-glare particle dispersion-5.

[0130] The preparation method of Dispersion-6 is as follows: Take 15 grams of Japanese Fuji Silicon Sylysia 310P silicon powder and put it into 85 grams of toluene. Add 1.8 grams of TEGO Dispers 685 dispersant and stir manually until uniform. After ultrasonic dispersion for 3 hours, the average particle size D50 was measured to be 4.25 μm and the span was 2.734. This is the anti-glare particle dispersion-6.

[0131] The particle sizes D10 (μm), D50 (μm), and D90 (μm) and span of micron-sized particles were measured using a laser particle size analyzer (Dandong Bettersize Instruments Co., Ltd., model: Bettersize 2600). Here, D10 refers to the particle size corresponding to a cumulative distribution percentage of 10%; D50 is the median particle size, corresponding to a cumulative distribution percentage of 50%; D90 refers to the particle size corresponding to a cumulative distribution percentage of 90%; and span = (D90 - D10) / D50.

[0132] Experimental Example 1 The transmittance (%), haze (%), pencil hardness, steel wool abrasion resistance, dyne value and flash point of the anti-glare films of Examples 1-11 and Comparative Examples 1-4 were measured, and the results are shown in Table 17.

[0133] The testing method is as follows: 1. Transmittance (%), Haze (%): According to JIS K-7105 standard, the transmittance and haze of the anti-glare hard coating were measured using a Japanese Denshoku NDH 8000 haze meter by means of transmitted light method.

[0134] 2. Pencil Hardness: The hardness of the coated pencil was measured using an Elcometer 3086 pencil hardness tester according to JIS K-5600 standard. Measurement method: Using a Mitsubishi pencil with a hardness of H to 3H, five lines were drawn under a load of 750g. The anti-glare hard coating was then observed for scratches, and the results were judged according to the following standards.

[0135] [Judgment Criteria] 0-2 scratches indicate a "Pass" rating; 3-5 scratches will result in an "NG" rating.

[0136] 3. Resistant to steel wool abrasion: Using a Guangdong Yuelian Instruments YL-339 steel wool resistance tester, under a load of 500g, Japanese Bon Star #0000 steel wool with a 2cm*2cm rubbing head was used to rub back and forth 100 times at 60Hz on the surface of the anti-glare hard coating film. The haze of the film after steel wool resistance rubbing was measured using a Japanese Denshoku NDH 8000 haze meter.

[0137] 4. Dyne value: Under a test environment of 23±3℃, using the American A. Shine dyne test pen, select dyne test pens with different dyne values ​​and draw a line about 3 cm long and 3-5 mm wide on the anti-glare hard coating film. If the line does not shrink or disperse into liquid droplets within 3 seconds, the coating film is judged to have a dyne value greater than or equal to that value. Continue until the highest dyne value dyne pen is used, and if it does not shrink or disperse into liquid droplets, it is judged to have the highest dyne value of the hard coating film.

[0138] 5. Flash point: Apply the anti-glare hard coating to a 402-pixel (ppi) mobile phone screen with the green screen turned on and observe the surface flashing.

[0139] [Judgment Criteria] No flash point ○; The flash point is slightly Δ; High flash point (×).

[0140] Table 17 Performance of anti-glare films in Examples 1-11 and Comparative Examples 1-4

[0141] As can be seen from Examples 1 to 11 of this application, the anti-glare film prepared in this application has a transmittance of 91.03% to 93.24%, a haze of 4.25% to 24.12%, a pencil hardness of H to 3H, a haze of 3.43% to 23.81% after abrasion resistance, a haze change of 0.12% to 0.82% before and after abrasion resistance, a dyne value of 34 to 38, and no flash point.

[0142] As can be seen from the comparison between Example 1 and Example 2, the proportion of micron-sized solid particles is increased in Example 2 compared to Example 1. This leads to an increase in the haze of the anti-glare film and a better anti-glare effect, but the image display quality may be worse than that of Example 1.

[0143] As can be seen from the comparison between Example 1 and Examples 3-4, the monomer surface area of ​​Example 3 is larger, which makes the dyne value of the anti-glare film higher than that of Example 1; the monomer surface area of ​​Example 4 is smaller, which makes the dyne value of the anti-glare film slightly lower than that of Example 1.

[0144] Comparing Examples 1 and 5 and 11, it can be seen that the UV-curable resin with hydroxyl groups in Example 5 has a lower hydroxyl content, which makes the haze change of the anti-glare film before and after friction higher than that in Example 1, and the dyne value is also slightly lower than that in Example 1; the UV-curable resin with hydroxyl groups in Example 11 has an even lower hydroxyl content, which makes the haze change of the anti-glare film before and after friction higher than that in Examples 1 and 5, and the dyne value is also slightly lower than that in Examples 1 and 5.

[0145] Comparing Examples 1 and 6 and 10, it can be seen that the solid content of the UV-curable resin with hydroxyl groups in Example 6 is lower, which makes the haze change of the anti-glare film before and after friction higher than that in Example 1, and the dyne value is also slightly lower than that in Example 1; the solid content of the UV-curable resin with hydroxyl groups in Example 10 is higher, which makes the crosslinking density of the anti-glare film decrease, and the pencil hardness is lower than that in Example 1.

[0146] As can be seen from Examples 1, 7-9, when the polar group includes at least one of hydroxyl, amino and carboxyl groups, the anti-glare film has a high dyne value.

[0147] A comparison between Comparative Example 1 and Example 1 shows that Comparative Example 1 uses inorganic micron-sized particles with a hydrophobic surface treatment. The haze change of the anti-glare film in Comparative Example 1 before and after friction is as high as 2.01%, which is much higher than that in Example 1. The dyne value is only 28, which is much lower than that in Example 1, and there is a slight flash point. This is because the surface of the hydrophobic micron-sized particles used in Comparative Example 1 has no polar functional groups and cannot form bonds with the UV resin. Therefore, the haze change increases after friction, and the particle surface has no polar functional groups, resulting in a low dyne value. At the same time, the hydrophobic particles are dispersed in a highly polar solvent, which increases the secondary average particle size and widens the secondary particle size range, thus worsening the flash point.

[0148] As can be seen from the comparison between Comparative Example 2 and Example 1, Comparative Example 2 uses a common UV-cured resin without hydroxyl groups, and the haze change of the anti-glare film of Comparative Example 2 before and after friction is as high as 1.97%, which is much higher than that of Example 1.

[0149] Comparing Comparative Example 3 and Example 1, it can be seen that Comparative Example 3 uses a non-polar solvent with a polarity of only 2.7. The particle size and span of the hydroxyl-containing polar microparticles dispersed in a solvent with low polarity are increased, and the flash point is aggravated.

[0150] Comparing Comparative Example 4 and Example 1, it can be seen that Comparative Example 4 uses an active monomer with a surface tension of 29.4 dyne / cm, and the anti-glare film of Comparative Example 4 has a dyne value of 30, which is lower than that of Example 1.

[0151] The above description is merely a specific embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An anti-glare liquid, characterized in that, The anti-glare liquid comprises micron-sized inorganic particles with polar groups modified on their surface, a resin matrix, and a polar solvent; The resin matrix includes a UV-curable resin with hydroxyl groups, a UV-curable resin with 6-12 functional groups, and a high surface tension active monomer. The surface tension of the high surface tension active monomer is ≥35 dyne / cm.

2. The anti-glare liquid according to claim 1, characterized in that, The polar group includes at least one of hydroxyl, amino, and carboxyl groups; And / or, the micron-sized inorganic particles include at least one of silicon dioxide, aluminum oxide, titanium dioxide, zirconium oxide, and zinc oxide; And / or, the original particle size of the micron-sized inorganic particles is 1.0 μm to 4.0 μm; And / or, the secondary average particle size of the micron-sized inorganic particles is 1.5 μm to 4.0 μm; And / or, the secondary particle size span of the micron-sized inorganic particles is ≤1.2; And / or, the refractive index of the micron-sized inorganic particles is 1.45 to 1.65; And / or, the micron-sized inorganic particles modified with polar groups account for 1 wt% to 10 wt% of the mass of the resin matrix.

3. The anti-glare liquid according to claim 1, characterized in that, The hydroxyl-containing UV-curable resin includes at least one of polyurethane acrylates, epoxy acrylates, polyester acrylates, and pure acrylic acid; And / or, the hydroxyl value of the UV-curable resin containing hydroxyl groups is ≥100; And / or, the hydroxyl-containing UV-curable resin accounts for 10wt% to 40wt% of the mass of the resin matrix.

4. The anti-glare liquid according to claim 1, characterized in that, The high surface tension active monomer includes at least one of monofunctional monomers, difunctional monomers, trifunctional monomers, and tetrafunctional or higher monomers; wherein, the monofunctional monomer includes at least one of monofunctional octadecyl methacrylate, tetrahydrofuran, benzyl acrylate, acryloylmorpholine, 2-phenoxyethyl acrylate, and N,N-dimethylacryloyl; the difunctional monomer includes difunctional 2(ethoxy)-1,6-hexanediol diacrylate, ethoxybisphenol A diacrylate, tricyclodecanedimethyl diacrylate, polyethylene glycol (600) diacrylate, polyethylene glycol (400) diacrylate, and poly... The monomer comprises at least one of ethylene glycol (200) diacrylate, 1,6-hexanediol diacrylate, diethylene glycol diacrylate, diethylene glycol diacrylate, and triethylene glycol diacrylate; the trifunctional monomer comprises at least one of trifunctional trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, 15(ethoxy)trimethylolpropane triacrylate, (propoxy)glycerol triacrylate, and pentaerythritol triacrylate; the tetrafunctional and above monomer comprises at least one of tetrafunctional and above bis(trimethylolpropane)tetraacrylate and bis(pentaerythritol)hexaacrylate. And / or, the high surface tension active monomer accounts for 10wt%~30wt% of the mass percentage of the resin matrix.

5. The anti-glare liquid according to claim 1, characterized in that, The polar solvents include alcohol solvents, ketone solvents, ester solvents, and aromatic solvents; Optionally, the alcohol solvent includes isopropanol, n-butanol, isobutanol, and propylene glycol methyl ether; Optionally, the ketone solvent includes methyl ethyl ketone, methyl isobutyl ketone, cyclopentanone, and cyclohexanone; Optionally, the ester solvent includes ethyl acetate, propyl acetate, and butyl acetate; Optionally, the aromatic solvent includes benzene, toluene, and xylene; Optionally, the polarity of the polar solvent is ≥3.

5.

6. The anti-glare liquid according to claim 1, characterized in that, The anti-glare liquid also includes a leveling agent and a photoinitiator; Optionally, the leveling agent includes at least one of fluorinated leveling agents, organosiloxane leveling agents, pure acrylic leveling agents, and polyester-modified acrylic leveling agents; Optionally, the photoinitiator includes a pyrolysis-type photoinitiator and / or a hydrogen abstraction-type photoinitiator; Optionally, the leveling agent accounts for 0.1 wt% to 0.5 wt% of the mass of the anti-glare liquid; Optionally, the photoinitiator accounts for 3 wt% to 6 wt% of the resin matrix by mass.

7. A method for preparing an anti-glare liquid as described in any one of claims 1 to 6, characterized in that, The method for preparing the anti-glare liquid includes mixing raw materials containing micron-sized inorganic particles with surface-modified polar groups, the resin matrix, and the polar solvent.

8. A method for preparing an anti-glare film, characterized in that, The method for preparing the anti-glare film includes first applying an anti-glare liquid to the surface of a base film, and then UV curing the dried anti-glare liquid to form an anti-glare layer. The anti-glare liquid includes micron-sized inorganic particles with polar groups modified on their surface, a resin matrix, and a polar solvent. The resin matrix includes a UV-curable resin with hydroxyl groups, a UV-curable resin with 6-12 functional groups, and a high surface tension active monomer. The surface tension of the high surface tension active monomer is ≥35 dyne / cm.

9. The method for preparing the anti-glare film according to claim 8, characterized in that, The polar group includes at least one of hydroxyl, amino, and carboxyl groups; And / or, the micron-sized inorganic particles include at least one of silicon dioxide, aluminum oxide, titanium dioxide, zirconium oxide, and zinc oxide; And / or, the original particle size of the micron-sized inorganic particles is 1.0 μm to 4.0 μm; And / or, the secondary average particle size of the micron-sized inorganic particles is 1.5 μm to 4.0 μm; And / or, the secondary particle size span of the micron-sized inorganic particles is ≤1.2; And / or, the refractive index of the micron-sized inorganic particles is 1.45 to 1.65; And / or, the micron-sized inorganic particles modified with polar groups account for 1 wt% to 10 wt% of the mass of the resin matrix; And / or, the hydroxyl-containing UV-curable resin includes at least one of polyurethane acrylates, epoxy acrylates, polyester acrylates, and pure acrylic acid; And / or, the hydroxyl value of the UV-curable resin containing hydroxyl groups is ≥100; And / or, the hydroxyl-containing UV-curable resin accounts for 10wt%~40wt% of the mass percentage of the resin matrix; And / or, the high surface tension active monomer includes at least one of monofunctional monomers, difunctional monomers, trifunctional monomers, and tetrafunctional or higher monomers; wherein, the monofunctional monomer includes at least one of monofunctional octadecyl methacrylate, tetrahydrofuran, benzyl acrylate, acryloylmorpholine, 2-phenoxyethyl acrylate, and N,N-dimethylacryloyl; the difunctional monomer includes difunctional 2(ethoxy)1,6-hexanediol diacrylate, ethoxybisphenol A diacrylate, tricyclodecanedimethyl diacrylate, polyethylene glycol (600) diacrylate, and polyethylene glycol (400) diacrylate. The monomer comprises at least one of polyethylene glycol (200) diacrylate, 1,6-hexanediol diacrylate, diethylene glycol diacrylate, diethylene glycol diacrylate, and triethylene glycol diacrylate; the trifunctional monomer comprises at least one of trifunctional trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, 15(ethoxy)trimethylolpropane triacrylate, (propoxy)glycerol triacrylate, and pentaerythritol triacrylate; the tetrafunctional and above monomer comprises at least one of tetrafunctional and above bis(trimethylolpropane)tetraacrylate and bis(pentaerythritol)hexaacrylate. And / or, the high surface tension active monomer accounts for 10wt%~30wt% of the resin matrix by mass; And / or, the polarity of the polar solvent is ≥3.

5.

10. An anti-glare film, characterized in that, The anti-glare film is prepared by the method of preparation of the anti-glare film according to claim 8 or 9.

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