Preparation method of anti-dazzle film, anti-dazzle film and polaroid

Abstract

The invention provides a preparation method of an anti-dazzle film, the anti-dazzle film and a polaroid.The preparation method of the anti-dazzle film comprises the steps that anti-dazzle liquid is prepared, and the anti-dazzle liquid is prepared from, by weight, 5-25 parts of polyurethane modified acrylate resin with the functionality of 6-15, 5-20 parts of hydroxyl-containing polyurethane acrylate resin with the functionality of 1-4, 5-20 parts of hydroxyl-containing polyurethane acrylate resin with the functionality of 1-4, 5-20 parts of hydroxyl-containing polyurethane acrylate resin with the functionality of 1-4, 5-20 parts of hydroxyl-containing polyurethane acrylate resin with the functionality of 1-4, 5-20 parts of hydroxyl-containing polyurethane acrylate resin with the functionality of 1- The invention relates to a polymethyl methacrylate coating which comprises the following components in parts by weight: 5-15 parts of an acrylate functional monomer, 0.2-2 parts of an initiator, 10-40 parts of an erosion solvent for eroding a polymethyl methacrylate base material, 10-45 parts of a general solvent, 1-10 parts of nano particles, 0.5-8 parts of micron particles and 0.2-1 part of a leveling wetting agent. Coating the surface of a polymethyl methacrylate base material with the anti-dazzle liquid, and forming an anti-dazzle layer on the surface of the polymethyl methacrylate base material after the anti-dazzle liquid is dried.

Description

Technical Field

[0001] This application relates to the field of optical film technology, and in particular to a method for preparing an anti-glare film, the anti-glare film itself, and a polarizer. Background Technology

[0002] Most monitors are used in environments with external light sources. These external light sources can reflect off the monitor surface, causing glare and reducing the monitor's visual performance. Those skilled in the art typically address this by applying an anti-glare film to the monitor surface.

[0003] In related technologies, an anti-glare layer is typically formed on the surface of a polymethyl methacrylate (PMMA) substrate by applying an anti-glare liquid mixed with microparticles. However, the anti-glare liquids in these technologies suffer from insufficient corrosiveness to the PMMA substrate, and the adhesion between the anti-glare liquid coating and the PMMA substrate decreases as the solvent evaporates. This makes the anti-glare layer relatively easy to detach from the PMMA substrate. Summary of the Invention

[0004] This invention provides a method for preparing an anti-glare film, an anti-glare film, and a polarizer, to solve the problem that the anti-glare layer is easily detached from the polymethyl methacrylate substrate.

[0005] To solve the above-mentioned technical problems, the present invention is implemented as follows: In a first aspect, embodiments of the present invention provide a method for preparing an anti-glare film.

[0006] The method for preparing the anti-glare film provided in this embodiment of the invention includes: preparing an anti-glare liquid, wherein the anti-glare liquid comprises, by weight: 5-25 parts of a polyurethane-modified acrylate resin with a functionality of 6 to 15, 5-20 parts of a hydroxyl-containing polyurethane acrylate resin with a functionality of 1 to 4, 5-15 parts of acrylate functional monomers, 0.2-2 parts of an initiator, 10-40 parts of an etching solvent for etching a polymethyl methacrylate substrate, 10-45 parts of a general solvent, 1-10 parts of nanoparticles, 0.5-8 parts of micron-sized particles, and 0.2-1 parts of a leveling and wetting agent; applying the anti-glare liquid to the surface of the polymethyl methacrylate substrate, and after the anti-glare liquid dries, forming an anti-glare layer on the surface of the polymethyl methacrylate substrate.

[0007] In some embodiments, the hydroxyl value of the polyurethane acrylate resin is 20 to 300 mg KOH / g.

[0008] In some embodiments, the acrylate functional monomers include at least one of: dipentaerythritol hexaacrylate, pentaerythritol triacrylate, 2-phenoxyethyl acrylate, trimethylolpropane diacrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, hydroxyethyl acrylate, and hydroxypropyl acrylate; the initiator includes at least one of: hydroxyketone photoinitiators, acetophenone photoinitiators, diphenylketone photoinitiators, phenylacetone photoinitiators, and benzoyl photoinitiators.

[0009] In some embodiments, the etching solvent includes at least one of butanone, ethyl acetate, acetone, butyl acetate, cyclohexanone, and methyl isobutyl ketone.

[0010] In some embodiments, the general solvent includes at least one of propylene glycol methyl ether, dimethyl glycol methyl ether, ethylene glycol ethyl ether, toluene, ethanol, and isopropanol.

[0011] In some embodiments, the nanoparticles include at least one of silicon dioxide, titanium dioxide, zirconium dioxide, and aluminum oxide; and / or, the average particle size of the nanoparticles is 20 to 300 nanometers.

[0012] In some embodiments, the micron particles include at least one of: polymethyl methacrylate resin particles, polystyrene resin particles, polystyrene-methyl methacrylate copolymer microparticles, polyethylene resin particles, epoxy resin particles, and polysiloxane resin particles; and / or, the average particle size of the micron particles is 1 to 5 micrometers.

[0013] In some embodiments, the leveling and wetting agent is: an organosilicon leveling agent; the leveling and wetting agent includes at least one of polyether modified organosilicon BYK-307, polyether modified organosilicon BYK-377, polyether modified organosilicon BYK-333, polyether modified organosilicon BYK-378 and polyether modified organosilicon BYK-UV3500.

[0014] In some embodiments, the drying temperature of the anti-glare liquid is 60 to 110 degrees Celsius, the drying time of the anti-glare liquid is 1 to 3 minutes, and the light dose for ultraviolet curing of the anti-glare liquid is 100 to 400 millijoules per square centimeter.

[0015] Secondly, embodiments of the present invention provide an anti-glare film.

[0016] The anti-glare film provided in this embodiment of the invention is prepared by any of the anti-glare film preparation methods provided in this embodiment of the invention.

[0017] Thirdly, embodiments of the present invention provide a polarizer.

[0018] The polarizing film provided in this embodiment of the invention includes: a polarizing substrate and any kind of anti-glare film provided in this embodiment of the invention, wherein the anti-glare film is attached to the polarizing substrate.

[0019] The above-described at least one technical solution adopted in the embodiments of the present invention can achieve the following beneficial effects: In an embodiment of the present invention, after the polymethyl methacrylate substrate is surface-treated with an etchant, the hydroxyl groups in the polyurethane acrylate resin form hydrogen bonds with the surface of the polymethyl methacrylate substrate, thereby significantly improving the adhesion between the anti-glare layer and the polymethyl methacrylate substrate, thus preventing the anti-glare layer from falling off the polymethyl methacrylate substrate.

[0020] As the corrosive solvent and general solvents evaporate, the relative content of hydroxyl groups in the polyurethane acrylate resin increases, and the interaction between the anti-glare liquid and the polymethyl methacrylate substrate surface is enhanced, which can also improve the adhesion between the anti-glare layer and the polymethyl methacrylate substrate.

[0021] Because polyurethane acrylate resin contains hydroxyl groups, nanoparticles can stably form a condensed state within the resin and then aggregate with micron-sized particles. During the coating process and the evaporation of etching solvents and general solvents, the settling time of the nanoparticles and micron-sized particles can be prolonged, further facilitating their aggregation and buoyancy. This results in an anti-glare layer with an uneven surface, improving both the anti-glare performance and clarity of the anti-glare film.

[0022] Because polyurethane acrylate resin contains hydroxyl groups, it can work synergistically with micron and nanoparticles to exist stably in the hardened anti-glare liquid, preventing the formation of particle dots or streaks on the surface of the anti-glare liquid. This can improve the surface clarity of the anti-glare film and enhance the visibility of images on displays equipped with anti-glare films.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A flowchart illustrating a method for preparing an anti-glare film according to an embodiment of the present invention; Figure 2Test results of different embodiments and comparative examples provided for the embodiments of the present invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Furthermore, although the terminology used in this invention is selected from commonly known and used terms, some terms mentioned in this specification may have been selected by the applicant in his or her judgment, and their detailed meanings are explained in the relevant sections of the description herein.

[0029] Furthermore, the invention should be understood not only through the actual terminology used, but also through the meaning implied by each term.

[0030] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] This invention provides a method for preparing an anti-glare film. (See reference...) Figure 1 The method for preparing the anti-glare film provided in this embodiment of the invention includes: Step 110: Prepare an anti-glare liquid, wherein the anti-glare liquid comprises, by weight: 5-25 parts of polyurethane-modified acrylate resin with a functionality of 6 to 15, 5-20 parts of hydroxyl-containing polyurethane acrylate resin with a functionality of 1 to 4, 5-15 parts of acrylate functional monomers, 0.2-2 parts of initiator, 10-40 parts of etching solvent for etching polymethyl methacrylate substrate, 10-45 parts of general solvent, 1-10 parts of nanoparticles, 0.5-8 parts of micron-sized particles, and 0.2-1 parts of leveling and wetting agent.

[0032] It should be noted that the term "general solvents" as used herein refers to solvents that do not corrode polymethyl methacrylate substrates. Of course, those skilled in the art can understand "general solvents" based on common knowledge in the field.

[0033] Step 120: Apply anti-glare liquid to the surface of polymethyl methacrylate (PMMA) substrate. After the anti-glare liquid dries, an anti-glare layer is formed on the surface of the PMMA substrate.

[0034] In this way, in the embodiments of the present invention, after the polymethyl methacrylate substrate is surface-treated by the etchant, the hydroxyl groups in the polyurethane acrylate resin form hydrogen bonds with the surface of the polymethyl methacrylate substrate, thereby significantly improving the adhesion between the anti-glare layer and the polymethyl methacrylate substrate, and thus preventing the anti-glare layer from falling off the polymethyl methacrylate substrate.

[0035] As the corrosive solvent and general solvents evaporate, the relative content of hydroxyl groups in the polyurethane acrylate resin increases, and the interaction between the anti-glare liquid and the polymethyl methacrylate substrate surface is enhanced, which can also improve the adhesion between the anti-glare layer and the polymethyl methacrylate substrate.

[0036] Because polyurethane acrylate resin contains hydroxyl groups, nanoparticles can stably form a condensed state within the resin and then aggregate with micron-sized particles. During the coating process and the evaporation of etching solvents and general solvents, the settling time of the nanoparticles and micron-sized particles can be prolonged, further facilitating their aggregation and buoyancy. This results in an anti-glare layer with an uneven surface, improving both the anti-glare performance and clarity of the anti-glare film.

[0037] Because polyurethane acrylate resin contains hydroxyl groups, it can work synergistically with micron and nanoparticles to exist stably in the hardened anti-glare liquid, preventing the formation of particle dots or streaks on the surface of the anti-glare liquid. This can improve the surface clarity of the anti-glare film and enhance the visibility of images on displays equipped with anti-glare films.

[0038] It should be noted that the polymethyl methacrylate substrate is a transparent substrate. The polyurethane acrylate resin is an ultraviolet (UV) cured polyurethane acrylate.

[0039] In some embodiments, the hydroxyl value of the polyurethane acrylate resin is 20 to 300 mg KOH / g. It should be noted that the hydroxyl value is a chemical indicator that measures the hydroxyl content of a substance. For example, if the hydroxyl value of a substance is 20 mg KOH / g, it means that the hydroxyl value of 1 gram of that substance is equivalent to the hydroxyl value of 20 milligrams of potassium hydroxide.

[0040] In some embodiments, the acrylate functional monomers include at least one of: dipentaerythritol hexaacrylate, pentaerythritol triacrylate, 2-phenoxyethyl acrylate, trimethylolpropane diacrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, hydroxyethyl acrylate, and hydroxypropyl acrylate.

[0041] In some embodiments, the initiator includes at least one of hydroxyketone photoinitiators, acetophenone photoinitiators, diphenylketone photoinitiators, phenylacetone photoinitiators, and benzoyl photoinitiators.

[0042] In some embodiments, the etching solvent includes at least one of butanone, ethyl acetate, acetone, butyl acetate, cyclohexanone, and methyl isobutyl ketone.

[0043] In some embodiments, the general solvent includes at least one of propylene glycol methyl ether, dimethyl glycol methyl ether, ethylene glycol ethyl ether, toluene, ethanol, and isopropanol.

[0044] In some embodiments, the nanoparticles include at least one of silicon dioxide, titanium dioxide, zirconium dioxide, and aluminum oxide. In some embodiments, the average particle size of the nanoparticles is 20 to 300 nanometers.

[0045] In some embodiments, the micron particles include at least one of polymethyl methacrylate resin particles, polystyrene resin particles, polystyrene-methyl methacrylate copolymer microparticles, polyethylene resin particles, epoxy resin particles, and polysiloxane resin particles. In some embodiments, the average particle size of the micron particles is 1 to 5 micrometers. It should be noted that, since organic micron particles have a more uniform particle size than inorganic micron particles, in the embodiments of the present invention, the micron particles can specifically be organic micron particles.

[0046] In some embodiments, the leveling and wetting agent is a silicone leveling agent. For example, the leveling and wetting agent includes at least one of polyether-modified silicone BYK-307, polyether-modified silicone BYK-377, polyether-modified silicone BYK-333, polyether-modified silicone BYK-378, and polyether-modified silicone BYK-UV3500.

[0047] In some embodiments, the drying temperature of the anti-glare liquid is 60 to 110 degrees Celsius, and the drying time is 1 to 3 minutes. In some embodiments, the light dose for UV curing the anti-glare liquid is 100 to 400 millijoules per square centimeter.

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Example 1: The polyurethane-modified acrylate resin used is LUXYDIR V-4000BA-ZS. For example, 25 parts by weight of a UV-curable polyurethane-modified acrylate resin with a functionality of 9 is used. This UV-curable polyurethane-modified acrylate resin is LUXYDIR V-4000BA-ZS. The solid content of LUXYDIR V-4000BA-ZS is 78-82%, the solvent is BAC, and the manufacturer is DIC. It should be noted that solid content refers to the proportion of solid matter remaining in a liquid after removing water or other volatile components.

[0050] The polyurethane acrylate resin selected is U-CURE 93722. For example, 8 parts by weight of a UV-curable polyurethane acrylate resin with a functionality of 2 are used. This UV-curable polyurethane acrylate resin is U-CURE 93722 from Kunshan Castel Polymer Materials Co., Ltd. The hydroxyl value of U-CURE 93722 is 76 mg KOH / g.

[0051] The acrylate functional monomer is pentaerythritol triacrylate. For example, 5 parts by weight of pentaerythritol triacrylate is used. This pentaerythritol triacrylate is EM235 from Changxing Chemical Co., Ltd.

[0052] The initiator used is hydroxycyclohexane benzophenone photoinitiator, also known as 184 photoinitiator. For example, 1.8 parts by weight of 184 photoinitiator is used. The manufacturer of 184 photoinitiator is Tianjin Jiuri New Materials Co., Ltd.

[0053] The etching solvents used are butanone and cyclohexanone. For example, 15 parts by weight of butanone and 22 parts by weight of cyclohexanone can be used.

[0054] For general solvents, propylene glycol methyl ether is used. For example, 40 parts by weight of propylene glycol methyl ether is used.

[0055] The nanoparticles used are nano-silica particles. For example, 5 parts by weight of nano-silica particles are used. These nano-silica particles are IPA-ST-ZL from Nissan Chemical. The particle size of these nano-silica particles is 80 nanometers.

[0056] The micron-sized particles are selected from polymethyl methacrylate-styrene copolymer particles. For example, 4.5 parts by weight of polymethyl methacrylate-styrene copolymer particles are used. The average particle size of the polymethyl methacrylate-styrene copolymer particles is 2 micrometers, the refractive index is 1.555, and the manufacturer is Sekisui Chemicals Co., Ltd.

[0057] The leveling and wetting agent used is polyether-modified silicone BYK-307. For example, 0.5 parts by weight of polyether-modified silicone BYK-307 is used. The manufacturer of polyether-modified silicone BYK-307 is BYK GmbH, Germany.

[0058] Then, the above-mentioned resin, particles, additives and solvents are thoroughly stirred and mixed to obtain an anti-glare liquid with a solid content of 30%.

[0059] Furthermore, the prepared anti-glare liquid was coated onto a 40-micron-thick polymethyl methacrylate substrate using an RDS No. 9 wire rod. The polymethyl methacrylate substrate coated with the anti-glare liquid was dried in an oven at 85 degrees Celsius for 60 seconds, and then photocured using an ultraviolet high-pressure mercury lamp with a radiation dose of 200 millijoules per square centimeter to obtain an anti-glare layer with a thickness of 3.5 microns on the polymethyl methacrylate substrate.

[0060] Example 2: Based on Example 1, the 8 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE 93722, hydroxyl value 76mgKOH / g, Kunshan Castel Polymer Materials Co., Ltd.) in Example 1 were adjusted to 8 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE93726, hydroxyl value 96mgKOH / g, Kunshan Castel Polymer Materials Co., Ltd.).

[0061] Example 3: Based on Example 1, the 8 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE 93722, hydroxyl value 76mgKOH / g, Kunshan Castel Polymer Materials Co., Ltd.) in Example 1 were adjusted to 8 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE93721, hydroxyl value 160mgKOH / g, Kunshan Castel Polymer Materials Co., Ltd.).

[0062] Example 4: Based on Example 1, the 8 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE 93722, hydroxyl value 76mgKOH / g, Kunshan Castel Polymer Materials Co., Ltd.) in Example 1 were adjusted to 12 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE93722, hydroxyl value 76mgKOH / g, Kunshan Castel Polymer Materials Co., Ltd.).

[0063] Example 5: Based on Example 1, the 8 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE 93722, hydroxyl value 76mgKOH / g, Kunshan Castel Polymer Materials Co., Ltd.) in Example 1 were adjusted to 12 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE93726, hydroxyl value 96mgKOH / g, Kunshan Castel Polymer Materials Co., Ltd.).

[0064] Example 6: Based on Example 1, the 8 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE 93722, hydroxyl value 76mgKOH / g, Kunshan Castel Polymer Materials Co., Ltd.) in Example 1 were adjusted to 12 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE93721, hydroxyl value 160mgKOH / g, Kunshan Castel Polymer Materials Co., Ltd.).

[0065] Comparative Example 1: Based on Example 1, the 8 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE 93722, hydroxyl value 76mgKOH / g, Kunshan Castel Polymer Materials Co., Ltd.) in Example 1 were adjusted to 8 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE9367, hydroxyl-free, Kunshan Castel Polymer Materials Co., Ltd.).

[0066] Comparative Example 2: Based on Example 1, the 8 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE 93722, hydroxyl value 76mgKOH / g, Kunshan Castel Polymer Materials Co., Ltd.) in Example 1 were adjusted to 12 parts by weight of UV-curable polyurethane acrylate resin with a functionality of 2 (U-CURE9367, hydroxyl-free, Kunshan Castel Polymer Materials Co., Ltd.).

[0067] The test methods and results are as follows: 1. Hardening liquid setting time test Add the above anti-glare solution to a 20ml transparent glass bottle, seal the bottle opening and keep it upright, observe the time when coagulation or sedimentation begins, and record the time (observe by shining a strong flashlight on it).

[0068] 2. Adhesion (100-cross) test A cross-cut tester was used to score 100 lines in both the MD and TD directions. 3M tape was then applied for adhesion. After pressing with a roller three times, the tape was peeled off, and the condition of the cross-cut areas was observed. The following judgments were made: 5B: There is no peeling off at the cut, edges, and gridded areas; 4B: No more than 5% of the marked areas are detached; 3B: There is peeling in the gridded area, and the area is greater than 5% but not more than 15%; 2B: There is peeling in the gridded area, and the area is greater than 15% but not more than 35%; 1B: There is peeling in the gridded area, and the area is greater than 35% but not greater than 65%; 0B: Exceeds the previous level.

[0069] 3. Transmittance and Haze Tests Measurements were performed using a haze meter (NDH 2000, manufactured by Nippon Denshoku Kogyo Co., Ltd.), with the surface having an uneven structure facing the light receiver side, in accordance with JIS K-7105.

[0070] 4. Pencil hardness test The pencil hardness of the anti-glare film, measured using JIS K-5400 with a load of 500g, was evaluated according to the following criteria: 〇: The pencil hardness is 2H or higher; ×: The pencil hardness is less than 2H.

[0071] It should be noted that a pencil hardness tester (manufactured by Toyo Seiki Co., Ltd.) was used as the equipment for measuring pencil hardness; and the pencil used for testing was a Mitsubishi brand special pencil. Regarding this pencil hardness test, the hardness of the pencil used was determined when no damage or other visual abnormalities were observed in four or more out of five pencil hardness tests.

[0072] 5. Anti-glare test The anti-glare film was affixed to a black polymethyl methacrylate (PMMA) board, and the reflected image was visually observed for confirmation. The film was then evaluated according to the following criteria: ◎: The fluorescent light is completely invisible; ○: The outline of the fluorescent lamp is blurred; △: The shape of the fluorescent lamp can be observed, but the glare is not suppressed; ×: The shape of the fluorescent lamp can be observed, but the glare is suppressed.

[0073] It should be noted that "completely invisible fluorescent light" indicates that the anti-glare performance is too strong, which will cause the screen display to be blurry when the anti-glare film is applied to the monitor. "Blurred outline of the fluorescent light" will also cause the screen display to be blurry when the anti-glare film is applied to the monitor. "The shape of the fluorescent light is visible but glare is not suppressed" indicates that there is an anti-glare effect, but it still causes eye strain. "The shape of the fluorescent light is visible but glare is suppressed" indicates that there is an anti-glare effect and no eye strain.

[0074] 6. Coating stripe test The anti-glare liquid was applied to the surface of a polymethyl methacrylate substrate, dried in an oven, and cured under UV light. The surface was then inspected by visual observation at a small angle of reflection, and evaluated according to the following criteria: L1: No stripes can be observed from any angle; L2: Stripes can only be observed at specific angles; L3: Stripes can be observed from various angles.

[0075] 7. Sharpness Test Using a BYK AT-4725 transmission fogging instrument, the anti-glare film was placed at the clarity measurement port according to ASTM D1003 standard for measurement.

[0076] See the test results for different embodiments and comparative examples. Figure 2 . refer to Figure 2 It can be seen that the solutions provided in Examples 1 to 6 have better clarity and adhesion than those in Comparative Examples 1 and 2. Compared to the solutions in Comparative Examples 1 and 2, coating streaks are less likely to be observed using the solutions provided in Examples 1 to 6.

[0077] It should be noted that since the anti-glare liquids of Comparative Example 1 and Comparative Example 2 do not contain hydroxyl groups, their particle settling time is relatively short. As a result, the anti-glare film formed by the anti-glare liquids of Comparative Example 1 and Comparative Example 2 can be observed with more obvious coating stripes, and the adhesion between the anti-glare film and the polymethyl methacrylate substrate is insufficient.

[0078] This invention provides an anti-glare film. The anti-glare film provided in this invention is prepared by any of the anti-glare film preparation methods provided in this invention.

[0079] This invention provides a polarizing film. The polarizing film provided in this invention includes a polarizing substrate and any type of anti-glare film provided in this invention, wherein the anti-glare film is attached to the polarizing substrate.

[0080] This invention provides a display. The display provided by this invention includes a display body and any type of anti-glare film provided by this invention.

[0081] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0082] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the embodiments of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for preparing an anti-glare film, characterized in that, include: An anti-glare liquid is prepared, wherein the anti-glare liquid comprises, by weight: 5-25 parts of a polyurethane-modified acrylate resin with a functionality of 6 to 15, 5-20 parts of a hydroxyl-containing polyurethane acrylate resin with a functionality of 1 to 4, 5-15 parts of an acrylate functional monomer, 0.2-2 parts of an initiator, 10-40 parts of an etching solvent for etching the polymethyl methacrylate substrate, 10-45 parts of a general solvent, 1-10 parts of nanoparticles, 0.5-8 parts of micron-sized particles, and 0.2-1 parts of a leveling and wetting agent; The anti-glare liquid is applied to the surface of a polymethyl methacrylate substrate, and after the anti-glare liquid dries, an anti-glare layer is formed on the surface of the polymethyl methacrylate substrate.

2. The method for preparing the anti-glare film according to claim 1, characterized in that, The hydroxyl value of the polyurethane acrylate resin is 20 to 300 mg KOH / g.

3. The method for preparing the anti-glare film according to claim 1, characterized in that, The acrylate functional monomers include at least one of the following: dipentaerythritol hexaacrylate, pentaerythritol triacrylate, 2-phenoxyethyl acrylate, trimethylolpropane diacrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, hydroxyethyl acrylate, and hydroxypropyl acrylate. The initiator includes at least one of the following: hydroxy ketone photoinitiators, acetophenone photoinitiators, diphenyl ketone photoinitiators, phenylacetone photoinitiators, and benzoyl photoinitiators.

4. The method for preparing the anti-glare film according to claim 1, characterized in that, The etching solvent includes at least one of the following: butanone, ethyl acetate, acetone, butyl acetate, cyclohexanone, and methyl isobutyl ketone; The general solvents include at least one of propylene glycol methyl ether, dimethyl glycol methyl ether, ethylene glycol ethyl ether, toluene, ethanol, and isopropanol.

5. The method for preparing the anti-glare film according to claim 1, characterized in that, The nanoparticles include at least one of silicon dioxide, titanium dioxide, zirconium dioxide, and aluminum oxide; and / or, the average particle size of the nanoparticles is 20 to 300 nanometers.

6. The method for preparing the anti-glare film according to claim 1, characterized in that, The micron particles include at least one of: polymethyl methacrylate resin particles, polystyrene resin particles, polystyrene-methyl methacrylate copolymer microparticles, polyethylene resin particles, epoxy resin particles, and polysiloxane resin particles; and / or, the average particle size of the micron particles is 1 to 5 micrometers.

7. The method for preparing the anti-glare film according to claim 1, characterized in that, The leveling and wetting agent is: an organosilicon leveling agent; The leveling and wetting agent includes at least one of polyether modified silicone BYK-307, polyether modified silicone BYK-377, polyether modified silicone BYK-333, polyether modified silicone BYK-378, and polyether modified silicone BYK-UV3500.

8. The method for preparing the anti-glare film according to claim 1, characterized in that, The drying temperature of the anti-glare liquid is 60 to 110 degrees Celsius, and the drying time of the anti-glare liquid is 1 to 3 minutes; The light dose for UV curing the anti-glare liquid is 100 to 400 millijoules per square centimeter.

9. An anti-glare film, characterized in that, The anti-glare film is prepared by the method for preparing the anti-glare film according to any one of claims 1 to 8.

10. A polarizer, characterized in that, include: The polarizing substrate and the anti-glare film of claim 9, wherein the anti-glare film is attached to the polarizing substrate.

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