AG anti-dazzle composite functional coating material and its application in display glass substrate

Abstract

The present application relates to the technical field of coating materials, in particular to an AG anti-dazzle composite functional coating material and its application in display glass substrates. The coating material is prepared by compounding and modifying nano-silicon dioxide with gamma-glycidyl ether oxypropyl trimethoxysilane, 3-(methacryloyloxy)propyl trimethoxysilane and polyether modified phosphate ester, and then mixing with organic silicon modified epoxy acrylate resin liquid, solvent, polyurethane dispersant, organic silicon leveling agent, polyether defoaming agent and hindered amine light stabilizer. The coating material is coated on the surface of the display glass substrate and solidified to form an AG anti-dazzle coating, and an AF hydrophobic and oleophobic layer can also be formed on the surface. The present application can improve the dispersion stability of nano-silicon dioxide, improve the haze uniformity, light transmittance, adhesion and alcohol resistance of the coating, and is suitable for vehicle-mounted, commercial and industrial display glass substrates.

Description

Technical Field

[0001] This invention relates to the field of coating materials technology, specifically to an AG anti-glare composite functional coating material and its application in display glass substrates. Background Technology

[0002] With the development of automotive displays, industrial touchscreens, conference tablets, medical display equipment, and consumer electronics display terminals, display glass substrates not only need high light transmittance and display clarity, but also need to reduce specular reflection and glare interference under strong ambient light. AG anti-glare treatment can change the glass surface from specular reflection to diffuse reflection, thereby improving viewing comfort and display readability. Existing AG treatment methods mainly include chemical etching, surface sandblasting, applying anti-glare films, and coating with AG anti-glare coatings. Among these, chemical etching and sandblasting directly change the glass surface structure, requiring high precision in process control and substrate thickness; film application suffers from problems such as edge lifting, insufficient abrasion resistance, and poor long-term stability; while coating-type AG coatings have gained attention due to their flexible processing and adaptability to thin display glass substrates.

[0003] Chinese invention patent CN104591550A discloses an anti-glare glass, its preparation method, and its application. This method uses chemical etching to create a micro-uneven structure on the glass surface, thereby transforming a reflective surface into a diffuse reflective surface, achieving an anti-glare effect. While this method can form an anti-glare structure on the glass surface, it primarily relies on chemical etching of the glass substrate itself. The process involves chemical treatment and post-etching cleaning, placing high demands on process control, environmental protection, and compatibility with thin glass substrates.

[0004] Chinese invention patent CN110028855A discloses a method for preparing an acrylic anti-glare coating for glass. The method uses acrylic resin, modified resin, modified graphene oxide, curing agent, solvent, silane coupling agent, and additives to prepare the anti-glare coating, which is used to improve the light transmittance, haze, and gloss of the coating. This type of coating solution is advantageous in avoiding direct etching of the glass substrate, but its focus is on the combination of the acrylic resin system and modified graphene oxide, without systematically optimizing the dispersion stability, haze uniformity, and adhesion stability after alcohol wiping of nano-silica in the AG coating material for display glass.

[0005] Chinese invention patent CN105891914A discloses a window protection panel with AG+AR+AF coating. It sequentially deposits an anti-glare film, an anti-reflective film, and an anti-fingerprint film on a glass substrate, enabling the window protection panel to simultaneously possess anti-glare, low-reflection, and fingerprint-resistant properties. This solution focuses on the multi-layer film structure design; however, multi-layer film structures typically place high demands on coating equipment, film layer matching, and interlayer adhesion. Furthermore, it does not provide specific solutions for the dispersion stability of matte particles in the AG coating slurry and the uniformity of coating haze.

[0006] Chinese invention patent CN113277745A discloses an anti-fingerprint film coating process and glass. This solution improves the adhesion and abrasion resistance of the AF film layer through steps such as ion source cleaning, moisture removal, immersion in AF film material, and curing. It is particularly suitable for AF coating treatment on glass substrates with AR, AG, or AG+AR film layers. This solution mainly solves the problems of film formation and adhesion of the AF anti-fingerprint film layer, but it does not solve the problems of nanoparticle dispersion, coating haze consistency, and coating stability against alcohol wiping of the AG anti-glare coating material itself.

[0007] Therefore, there is still a need in the existing technology for an AG anti-glare composite functional coating material suitable for display glass substrates. This material should improve the dispersion stability of nano-silica in the slurry through composition optimization without relying on complex etching or multi-layer vacuum coating. This would also improve the haze uniformity, light transmittance, adhesion, and alcohol-resistant properties of the AG coating. Furthermore, it should be able to be used in conjunction with an AF hydrophobic and oleophobic layer to meet the comprehensive requirements of display glass substrates for anti-glare, clarity, wipe resistance, and easy surface cleaning. Summary of the Invention

[0008] To address the shortcomings of the existing technology, this invention provides an AG anti-glare composite functional coating material and its application in display glass substrates.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: An AG anti-glare composite functional coating material, wherein the AG anti-glare composite functional coating material is prepared by a method comprising the following steps: S1. Modify the nano-silica to obtain modified nano-silica; the modifier used in the modification process includes γ-glycidyl etheroxypropyltrimethoxysilane, 3-(methacryloyloxy)propyltrimethoxysilane and polyether-modified phosphate ester. S2. Mix the components including the modified nano-silica, silicone-modified epoxy acrylate resin liquid, silicone leveling agent, polyether defoamer and hindered amine light stabilizer to obtain the AG anti-glare composite functional coating material.

[0010] Preferably, in the modifier, the mass ratio of γ-glycidoxypropyltrimethoxysilane, 3-(methacryloyloxy)propyltrimethoxysilane and polyether-modified phosphate is (2-4):(1-3):(1-2).

[0011] The polyether-modified phosphate ester is preferably lauryl ether-4 phosphate ester.

[0012] This invention addresses the problems of nano-silica in traditional AG coatings, which tend to agglomerate and settle, leading to uneven coating haze, decreased light transmittance, localized fogging, and reduced adhesion after alcohol wiping. It employs a compound of γ-glycidyl etheroxypropyltrimethoxysilane, 3-(methacryloyloxy)propyltrimethoxysilane, and polyether-modified phosphate ester to modify nano-silica, thereby improving the dispersion stability and interfacial compatibility of nano-silica in organosilicon-modified epoxy acrylate resin systems.

[0013] Among them, silane modifiers are beneficial to enhancing the bonding stability between nano-silica and resin system and glass substrate, while polyether modified phosphate esters are beneficial to improving particle wetting and dispersibility. The combination of the three can reduce particle agglomeration and sedimentation, making the scattering particles in the AG coating more uniformly distributed, thereby achieving a stable anti-glare effect and better haze uniformity while maintaining high light transmittance.

[0014] Meanwhile, the present invention uses a combination of silicone-modified epoxy acrylic resin liquid, leveling agent, defoamer and dispersant to make the coating film more continuous and smooth, reducing pinholes, light spots and local peeling; and further setting an AF hydrophobic and oleophobic layer on the surface of the AG anti-glare coating can improve the water resistance, oil resistance and easy cleaning performance of the glass substrate surface.

[0015] Preferably, in step S1, the specific steps of the modification treatment are as follows: mixing nano-silica, anhydrous ethanol and water, stirring, then adding the modifier, stirring and reacting at 50-60°C, filtering and drying after the treatment to obtain modified nano-silica; the mass ratio of nano-silica, anhydrous ethanol, water and modifier is 100:(600-800):(100-150):(4-8).

[0016] Preferably, in step S2, the amounts of each component by weight are: 7-15 parts of modified nano-silica, 18-35 parts of silicone-modified epoxy acrylic resin liquid, 0.1-0.8 parts of silicone leveling agent, 0.05-0.4 parts of polyether defoamer, 0.3-2.5 parts of hindered amine light stabilizer, 30-80 parts of solvent, and 0.2-1.8 parts of polyurethane dispersant.

[0017] Preferably, the solvent includes at least one selected from propylene glycol methyl ether acetate, propylene glycol methyl ether, isopropanol, dibutyl adipate, and cyclohexanone.

[0018] Preferably, the solid content of the silicone-modified epoxy acrylate resin liquid is 45-55 wt%.

[0019] Preferably, the nano-silica is spherical nano-silica with a D50 particle size of 300 nm and a D90 particle size of no more than 500 nm.

[0020] The application of the aforementioned AG anti-glare composite functional coating material in display glass substrates.

[0021] The application includes the following steps: applying the AG anti-glare composite functional coating material to the surface of a display glass substrate, and after drying and curing, forming an AG anti-glare coating on the surface of the display glass substrate; the dry film thickness of the AG anti-glare coating is 2.5-3.5μm.

[0022] Preferably, the application further includes the step of forming an AF hydrophobic and oleophobic layer on the surface of the AG anti-glare coating; the AF hydrophobic and oleophobic layer is obtained by coating, drying and curing an AF surface treatment liquid; the AF surface treatment liquid contains perfluoropolyether modified silane and fluorinated silane.

[0023] Preferably, the AF surface treatment liquid comprises, by weight: 0.5-3.0 parts of perfluoropolyether modified silane, 0.2-1.0 parts of fluorinated silane, 80-100 parts of anhydrous ethanol, 2-10 parts of isopropanol, 0.2-1.0 parts of water, and 0.05-0.3 parts of glacial acetic acid.

[0024] The beneficial effects of this invention are: 1. This invention uses γ-glycidyl etheroxypropyltrimethoxysilane, 3-(methacryloyloxy)propyltrimethoxysilane and polyether-modified phosphate ester to modify nano-silica, so that nano-silica has good wetting and dispersibility and storage stability in solvent and organosilicon-modified epoxy acrylate resin liquid system, and reduces the problems of agglomeration, sedimentation and hard precipitation of nano-silica in coating materials.

[0025] 2. This invention combines modified nano-silica with polyurethane dispersant, organosilicon leveling agent, and polyether defoamer to enable the AG anti-glare composite functional coating material to form a more uniform particle distribution and coating surface structure during the coating process. This achieves moderate haze and low specular gloss while maintaining high visible light transmittance, thereby improving the anti-glare effect and display clarity of the display glass substrate.

[0026] 3. The compounded modified nano silica of the present invention can form a good interfacial compatibility with the organosilicon modified epoxy acrylic resin liquid, and is conducive to improving the bonding stability between the AG anti-glare coating and the display glass substrate. This allows the coating to maintain a good appearance, haze stability and adhesion even after being wiped with alcohol, reducing the risk of coating whitening, peeling and local light spots.

[0027] 4. The present invention further provides an AF hydrophobic and oleophobic layer on the surface of the AG anti-glare coating, which can improve the water resistance, oil resistance and fingerprint resistance of the display glass substrate surface. The resulting composite functional coating has anti-glare, stable adhesion, wiping resistance and easy surface cleaning properties, and is suitable for surface functionalization treatment of display glass substrates. Detailed Implementation

[0028] The invention will now be described in further detail with reference to specific embodiments, but it should not be construed as limiting the scope of the invention to the following embodiments.

[0029] The raw materials described in this application are partially described; all other raw materials not described are commercially available. Nano-silica was purchased from Shandong Kasong New Materials Co., Ltd., with a particle size of 2000 mesh.

[0030] Laureth-4 phosphate was purchased from Nantong Runfeng Petrochemical Co., Ltd.

[0031] The polyurethane dispersant was purchased from Greenlink (Jining) Chemical Technology Co., Ltd., item number 6240.

[0032] The silicone-modified epoxy acrylic resin liquid was purchased from Shandong Yiyi New Material Co., Ltd., with a solid content of 50% and model number SJ-804.

[0033] The silicone leveling agent was purchased from Greenlink (Jining) Chemical Technology Co., Ltd., model BYK-300.

[0034] The polyether defoamer was purchased from Greenlink (Jining) Chemical Technology Co., Ltd., model SL-121.

[0035] Bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate was purchased from Greenlink (Jining) Chemical Technology Co., Ltd., model 55. Example 1

[0036] An AG anti-glare composite functional coating material includes the following preparation steps, in parts by weight: S1. Weigh 100 parts of nano-silica, 720 parts of anhydrous ethanol and 120 parts of water, mix and stir for 20 min; then add 6 parts of modifier and stir at 55℃ for 2 h; after the treatment, filter and dry the resulting solid at 80℃ for 4 h to obtain modified nano-silica; the modifier is composed of γ-glycidyl etheroxypropyltrimethoxysilane, 3-(methacryloyloxy)propyltrimethoxysilane and lauryl ether-4 phosphate in a mass ratio of 3:2:1; S2. Mix 24.5 parts of propylene glycol methyl ether acetate, 18.5 parts of propylene glycol methyl ether, 10.0 parts of isopropanol, 5.0 parts of dibutyl adipate, and 4.0 parts of cyclohexanone, and stir until homogeneous. Add 10.0 parts of modified nano silica and 0.8 parts of polyurethane dispersant, and stir at 600 rpm for 35 min. Then add 26.0 parts of silicone-modified epoxy acrylic resin, 0.25 parts of silicone leveling agent, 0.15 parts of polyether defoamer, and 0.8 parts of bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacic acid ester, and continue stirring at 500 rpm for 25 min to obtain the AG anti-glare composite functional coating material. Example 2

[0037] The modifier is basically the same as in Example 1, except that it is composed of γ-glycidoxypropyltrimethoxysilane, 3-(methacryloyloxy)propyltrimethoxysilane and lauryl ether-4 phosphate in a mass ratio of 4:1:1. Example 3

[0038] The modifier is basically the same as in Example 1, except that it is composed of γ-glycidoxypropyltrimethoxysilane, 3-(methacryloyloxy)propyltrimethoxysilane and lauryl ether-4 phosphate in a mass ratio of 2:2:2. Comparative Example 1

[0039] The process is basically the same as in Example 1, except that the modifier in S1 is only γ-glycidoxypropyltrimethoxysilane, and the amount added is still 6 parts; the amount of other raw materials and the preparation steps are the same as in Example 1. Comparative Example 2

[0040] The process is basically the same as in Example 1, except that the modifier in S1 is only 3-(methacryloyloxy)propyltrimethoxysilane, and the amount added is still 6 parts; the amount of other raw materials and the preparation steps are the same as in Example 1. Comparative Example 3

[0041] The process is basically the same as in Example 1, except that the modifier in S1 is only lauryl ether-4 phosphate, and the amount added is still 6 parts; the amount of other raw materials and the preparation steps are the same as in Example 1. Comparative Example 4

[0042] The process is basically the same as in Example 1, except that: the modifier in S1 is composed of γ-glycidoxypropyltrimethoxysilane and 3-(methacryloyloxy)propyltrimethoxysilane in a mass ratio of 3:3, and the amount added is still 6 parts; the amount of other raw materials and the preparation steps are the same as in Example 1. Comparative Example 5

[0043] The process is basically the same as in Example 1, except that: the S1 treatment is not performed, and unmodified nano-silica is used directly as the nano-silica in S2; the amount of other raw materials and the preparation steps are the same as in Example 1. Comparative Example 6

[0044] The process is basically the same as in Example 1, except that the modifier in S1 is KH560 silane coupling agent, and the amount added is still 6 parts; the amount of other raw materials and the preparation steps are the same as in Example 1. Comparative Example 7

[0045] The process is basically the same as in Example 1, except that: no polyurethane dispersant is added in S2, and the amount of propylene glycol methyl ether acetate is adjusted to 25.3 parts; the amounts of other raw materials and the preparation steps are the same as in Example 1. Application Example 1

[0046] The application of AG anti-glare composite functional coating material in display glass substrate is as follows: (1) Take a display glass substrate with a thickness of 0.7 mm, wipe the surface of the display glass substrate with anhydrous ethanol, and then dry it at 60°C for 5 min; uniformly coat the AG anti-glare composite functional coating material obtained in Example 1 onto one side surface of the display glass substrate, let it stand at room temperature for 5 min, dry it at 90°C for 10 min, and then cure it at 115°C for 35 min to obtain a display glass substrate with AG anti-glare coating; wherein, the dry film thickness of AG anti-glare coating is 3.0±0.3 μm; (2) The AF surface treatment liquid is uniformly coated on the surface of the AG anti-glare coating. After standing at room temperature for 3 minutes, it is dried at 80°C for 10 minutes and then cured at 120°C for 30 minutes to obtain a display glass substrate with AG anti-glare coating and AF hydrophobic and oleophobic layer.

[0047] The resulting composite functional coating includes an AG anti-glare coating on the surface of the display glass substrate and an AF hydrophobic and oleophobic layer on the surface of the AG anti-glare coating.

[0048] The preparation method of the AF surface treatment liquid is as follows: Weigh 1.0 part of perfluoropolyether modified silane, 0.5 part of tridecafluorooctyltrimethoxysilane, 93.0 part of anhydrous ethanol, 5.0 part of isopropanol, 0.4 part of water and 0.1 part of glacial acetic acid by weight, mix and stir for 20 min to obtain the AF surface treatment liquid. Application Example 2-10

[0049] The process is basically the same as in Application Example 1, except that the AG anti-glare composite functional coating material obtained in Example 1 in step (1) is replaced with the AG anti-glare composite functional coating material of Examples 2-3 and Comparative Examples 1-7 respectively; the rest of the steps are the same as in Application Example 1. Application Example 11

[0050] The process is basically the same as in Application Example 1, except that the AF surface treatment liquid coating process in step (2) is not performed, and only a display glass substrate with an AG anti-glare coating is obtained; the remaining steps are the same as in Application Example 1. Application Example 12

[0051] It is basically the same as Application Example 1, except that: in step (2), the AF surface treatment liquid does not contain perfluoropolyether modified silane, and the amount of anhydrous ethanol is adjusted to 94.0 parts; the amount of other raw materials and the preparation steps are the same as in Application Example 1. Test Example 1

[0052] Slurry dispersion stability test: The AG anti-glare composite functional coating materials obtained in Examples 1-3 and Comparative Examples 1-7 were subjected to slurry dispersion stability test.

[0053] Take 100 mL of the AG anti-glare composite functional coating material obtained in Examples 1-3 and Comparative Examples 1-7 respectively, place it in a 100 mL stoppered graduated cylinder, let it stand at 25°C for 7 days, record the height of the bottom sedimentation layer, and observe whether a hard precipitate forms. The sedimentation rate is calculated according to the following formula: Settlement rate = (Height of bottom settlement layer / Initial height of slurry) × 100%.

[0054] Meanwhile, slurry samples were taken before and after 7 days of settling, and diluted 20 times with a 1:1 mass ratio mixture of propylene glycol methyl ether acetate and isopropanol. The D90 particle size of the slurry particles was measured using a laser particle size analyzer, and the particle size growth rate was calculated according to the following formula: Particle size growth rate = (D90 particle size after 7 days of standing - D90 particle size before standing) / D90 particle size before standing × 100%. The test results are shown in Table 1.

[0055] Table 1. Test results of slurry dispersion stability of AG anti-glare composite functional coating material Test Example 2

[0056] Optical anti-glare performance and haze uniformity test: The optical anti-glare performance and haze uniformity of the display glass substrates obtained in application examples 1-10 were tested. Before the test, the dry film thickness of the AG anti-glare coating of each sample was controlled to be 3.0±0.3μm.

[0057] Visible light transmittance and haze were tested according to GB / T 2410-2008 "Determination of transmittance and haze of transparent plastics". Five test points were selected for each sample, including the center point and four corners, to measure the visible light transmittance and haze, and the average value was calculated. The haze uniformity deviation was calculated using the following formula: Haze uniformity deviation = (maximum haze value - minimum haze value) / average haze value × 100%.

[0058] The 60° gloss was tested according to GB / T 9754-2025 "Determination of 20°, 60° and 85° gloss of paints and varnishes". Five positions were tested for each sample and the average value was taken. The test results are shown in Table 2.

[0059] Table 2 shows the test results of the optical anti-glare performance and haze uniformity of the glass substrate. Test Example 3

[0060] Adhesion and alcohol resistance tests: The adhesion and alcohol resistance tests were performed on the display glass substrates obtained in Application Examples 1-10.

[0061] The adhesion was tested according to GB / T 9286-2021 "Paints and Varnishes Cross-cut Test", with a cross-cut spacing of 1 mm. After the cross-cut was made, tape was used to stick and peel it off, and the coating peeling in the cross-cut area was observed. The grade was evaluated according to the standard.

[0062] The alcohol resistance to wiping was tested according to GB / T 23989-2009 "Determination of Solvent Resistance to Wiping of Coatings". The test solvent was 95 vol% ethanol. A lint-free cloth was used to cover the wiping head, with a load of 500 g, a wiping stroke of 50 mm, a wiping frequency of 60 times / min, and 1000 reciprocating wiping cycles. After wiping, the coating surface was observed for whitening, cracking, peeling, exposure of the substrate, or obvious gloss spots. The haze change before and after wiping was measured according to the method in Test Example 2. At the same time, the adhesion grade after wiping was tested again according to GB / T 9286-2021. The test results are shown in Table 3.

[0063] Table 3 shows the test results of adhesion and alcohol resistance of the glass substrate. ; The test results above show that the present invention uses a compound of γ-glycidyl etheroxypropyltrimethoxysilane, 3-(methacryloyloxy)propyltrimethoxysilane, and polyether-modified phosphate ester as a modifier for nano-silica, which can significantly improve the dispersion stability of nano-silica in AG anti-glare composite functional coating materials. In Example 1, the three modifying components were compounded in a specific ratio. The resulting slurry showed little particle size increase and low sedimentation after standing, and no hard precipitate appeared, indicating that this compound modification method can effectively inhibit secondary agglomeration between nano-silica. Although Examples 2 and 3 also used ternary compound modifiers, the compounding ratio changed, and the slurry stability and coating uniformity decreased slightly compared to Example 1.

[0064] Comparative Example 1, modified only with γ-glycidoxypropyltrimethoxysilane, can improve the bonding between nano-silica and resin or glass substrates to some extent, but lacks sufficient compatibility regulation and dispersion wetting effect of the acrylic system. The slurry still easily experiences particle size increase and sedimentation after standing. Comparative Example 2, modified only with 3-(methacryloyloxy)propyltrimethoxysilane, has good compatibility with the acrylic resin system, but its overall improvement on the surface wetting stability of nano-silica and the bonding at the glass interface is insufficient. Therefore, the coating's haze uniformity and alcohol-resistant wiping stability are still unsatisfactory. Comparative Example 3, modified only with polyether-modified phosphate ester, can provide some wetting and dispersion effect, but lacks the stable bonding of silane components to the inorganic particle surface, resulting in insufficient interfacial adhesion after coating film formation. After alcohol wiping, it easily shows whitening or slight peeling.

[0065] Comparative Example 4 uses a binary compound of γ-glycidyl etheroxypropyltrimethoxysilane and 3-(methacryloyloxy)propyltrimethoxysilane for modification, which shows some improvement compared to a single modifier. However, due to the lack of polyether-modified phosphate ester, the wetting and steric stabilizing effects of nano-silica in the solvent-resin system are insufficient, making it difficult to achieve the low sedimentation rate and good haze uniformity of Example 1. Comparative Example 5 directly uses unmodified nano-silica. The particle surface has poor compatibility with the organic resin system, easily forming agglomerates, causing slurry sedimentation, high coating haze, decreased transmittance, and uneven anti-glare effect on the coating surface. Comparative Example 6 uses conventional KH560 modification, which is essentially still a single silane modification method, making it difficult to simultaneously achieve particle dispersion, resin compatibility, and interfacial adhesion. Therefore, its overall performance is inferior to Example 1. Comparative Example 7 did not contain a polyurethane dispersant, indicating that even after the nano-silica is modified by compounding, a dispersant is still needed to maintain the long-term stability of the slurry system. Otherwise, the particles will still aggregate during storage and coating, affecting the optical uniformity and abrasion resistance of the coating.

[0066] The results from application examples 1-10 show that the coating formed by the AG anti-glare composite functional coating material obtained in Example 1 can achieve moderate haze and low specular gloss while maintaining high visible light transmittance, indicating that it can balance display clarity and anti-glare effect. In contrast, Comparative Examples 5 and 7, due to particle agglomeration or insufficient dispersion stability, although the haze increased, the transmittance decreased and the haze uniformity deteriorated, easily leading to problems such as fogging, local light spots, or uneven anti-glare. Meanwhile, the coating obtained in Example 1 still maintained good appearance and adhesion after being wiped with ethanol, indicating that there is good interfacial compatibility between the compound modified nano-silica and the organosilicon modified epoxy acrylic resin liquid, which is conducive to forming a continuous and stable AG anti-glare coating structure. Single modifiers, binary modifiers, conventional KH560 modification, and unmodified nano-silica cannot simultaneously achieve good dispersion stability, haze uniformity, strong adhesion, and alcohol-resistant wiping stability, further demonstrating the synergistic effect between the compound modifier and the coating system of this invention.

Claims

1. An AG anti-glare composite functional coating material, characterized in that, The AG anti-glare composite functional coating material is prepared by a method including the following steps: S1. Modify the nano-silica to obtain modified nano-silica; the modifier used in the modification process includes γ-glycidyl etheroxypropyltrimethoxysilane, 3-(methacryloyloxy)propyltrimethoxysilane and polyether-modified phosphate ester. S2. Mix the components including the modified nano-silica, silicone-modified epoxy acrylate resin liquid, silicone leveling agent, polyether defoamer and hindered amine light stabilizer to obtain the AG anti-glare composite functional coating material.

2. The AG anti-glare composite functional coating material according to claim 1, characterized in that, In the modifier, the mass ratio of γ-glycidoxypropyltrimethoxysilane, 3-(methacryloyloxy)propyltrimethoxysilane and polyether-modified phosphate ester is (2-4):(1-3):(1-2).

3. The AG anti-glare composite functional coating material according to claim 1 or 2, characterized in that, In step S1, the specific steps of the modification treatment are as follows: mix nano-silica, anhydrous ethanol and water, stir, then add the modifier, stir and react at 50-60°C, filter and dry after treatment to obtain modified nano-silica.

4. The AG anti-glare composite functional coating material according to claim 3, characterized in that, The mass ratio of the nano-silica, anhydrous ethanol, water and modifier is 100:(600-800):(100-150):(4-8).

5. The AG anti-glare composite functional coating material according to any one of claims 1-4, characterized in that, In S2, the amounts of each component by weight are as follows: 7-15 parts of modified nano-silica, 18-35 parts of silicone-modified epoxy acrylic resin liquid, 0.1-0.8 parts of silicone leveling agent, 0.05-0.4 parts of polyether defoamer, 0.3-2.5 parts of hindered amine light stabilizer, 30-80 parts of solvent, and 0.2-1.8 parts of polyurethane dispersant.

6. The AG anti-glare composite functional coating material according to any one of claims 1-5, characterized in that, The solid content of the organosilicon-modified epoxy acrylate resin liquid is 45-55 wt%.

7. The application of the AG anti-glare composite functional coating material as described in any one of claims 1-6 in a display glass substrate.

8. The application according to claim 7, characterized in that, The process includes the following steps: applying the AG anti-glare composite functional coating material to the surface of the display glass substrate, and after drying and curing, forming an AG anti-glare coating on the surface of the display glass substrate; The dry film thickness of the AG anti-glare coating is 2.5-3.5 μm.

9. The application according to claim 8, characterized in that, It also includes the step of forming an AF hydrophobic and oleophobic layer on the surface of the AG anti-glare coating; the AF hydrophobic and oleophobic layer is obtained by coating, drying and curing an AF surface treatment liquid; the AF surface treatment liquid contains perfluoropolyether modified silane and fluorinated silane.

10. The application according to claim 9, characterized in that, The AF surface treatment solution comprises, by weight, 0.5-3.0 parts of perfluoropolyether modified silane, 0.2-1.0 parts of fluorinated silane, 80-100 parts of anhydrous ethanol, 2-10 parts of isopropanol, 0.2-1.0 parts of water, and 0.05-0.3 parts of glacial acetic acid.

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