CN117700120A - Method for forming anti-glare coating on surface of glass cover plate and vehicle-mounted display screen - Google Patents

Method for forming anti-glare coating on surface of glass cover plate and vehicle-mounted display screen Download PDF

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Publication number
CN117700120A
CN117700120A CN202311689215.4A CN202311689215A CN117700120A CN 117700120 A CN117700120 A CN 117700120A CN 202311689215 A CN202311689215 A CN 202311689215A CN 117700120 A CN117700120 A CN 117700120A
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China
Prior art keywords
coating
glass cover
cover plate
composition
polydimethylsiloxane
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CN202311689215.4A
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Chinese (zh)
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向中华
向阳
赵建通
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Anhui Jianxing Technology Co ltd
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Anhui Jianxing Technology Co ltd
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Priority to CN202311689215.4A priority Critical patent/CN117700120A/en
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Abstract

The invention provides a method for forming an anti-glare coating on the surface of a glass cover plate and a vehicle-mounted display screen, wherein the method for forming the anti-glare coating on the surface of the glass cover plate comprises the following steps: applying a polydimethylsiloxane composition to a surface of a glass cover plate to form a base coating on the surface of the glass cover plate; applying a composition of a siloxane to the surface of the base coating to form SiO on the surface of the base coating 2 And (5) coating the particles to obtain the anti-dazzle glass cover plate coating. The invention provides a method for forming an anti-glare coating on the surface of a glass cover plate and a vehicle-mounted display screen, wherein the coating with a concave-convex structure and fluorine end group is formed on the surface of the glass cover plate,the glass cover plate is endowed with anti-dazzle and anti-fouling functions, so that the glass cover plate is effectively applied to a vehicle-mounted display screen.

Description

Method for forming anti-glare coating on surface of glass cover plate and vehicle-mounted display screen
Technical Field
The invention relates to the technical field of glass cover plates of display screens, in particular to a method for forming an anti-glare coating on the surface of a glass cover plate and a vehicle-mounted display screen.
Background
With the development and popularization of personal consumer electronics, glass cover plates are applied to the fields of vehicle-mounted display screens and the like due to excellent optical properties and unique wear resistance. However, when the glass cover plate is applied to a vehicle-mounted display screen, if strong light sources such as sun and fluorescent lamps exist around, strong glare can be formed on the screen, so that the visibility of screen images is reduced, and the use is influenced and meanwhile, the impact is brought to the visual sense of people.
In order to avoid glare from the glass cover sheet, an antiglare treatment is generally performed industrially. The traditional anti-dazzle treatment process is to treat the surface of the glass frosting powder prepared solution or other chemical raw materials, and polish the glass frosting powder to ensure that the product has lower reflectance to visible light compared with the original base material, thereby reducing environmental interference and improving visual effect. However, the process is complex to operate and is gradually eliminated. The existing common anti-dazzle treatment process is to etch the substrate through chemical agents, controllably etch the surface of the substrate into a uniform concave-convex structure, prepare the anti-dazzle substrate surface, and ensure the definition of screen images. But the process yield is low and the environmental pollution is serious.
As can be seen from this, it is currently necessary to tighten the anti-glare technology of electronic devices such as vehicle-mounted display screens. Meanwhile, the fact that electronic equipment such as a vehicle-mounted display screen and the like are frequently touched and controlled is considered, fingerprint and other stains are extremely easy to form, and therefore the definition of screen images is reduced, and the appearance is influenced. In order to achieve the purpose of both anti-dazzle and anti-fouling in industry, it is common to form an anti-dazzle coating on a substrate first and then to plate an anti-fouling coating on the anti-dazzle coating. However, the coating formed by this secondary coating method has no adhesion and the resulting coating has poor properties.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a method for forming an anti-glare coating on the surface of a glass cover plate and a vehicle-mounted display screen, wherein the anti-dazzle and anti-fouling functions are endowed to the glass cover plate by forming the coating with a concave-convex structure and a fluorine end group on the surface of the glass cover plate, so that the anti-dazzle and anti-fouling functions are effectively applied to the vehicle-mounted display screen.
The invention provides a method for forming an anti-glare coating on the surface of a glass cover plate, which comprises the following steps:
(1) Applying a polydimethylsiloxane composition to a surface of a glass cover plate to form a base coating on the surface of the glass cover plate;
(2) Applying a composition of a siloxane to the surface of the base coating to form SiO on the surface of the base coating 2 And (5) coating the particles to obtain the anti-dazzle coating.
Preferably, the composition of polydimethyl siloxane comprises polydimethyl siloxane, a catalyst and a solvent;
preferably, the polydimethylsiloxane is hydroxyl-terminated polydimethylsiloxane, the catalyst is dibutyltin dilaurate, and the solvent is n-hexane.
Preferably, the composition of polydimethylsiloxane is coated on the surface of the glass cover plate, and specifically comprises the following steps: and (3) spin-coating the polydimethylsiloxane composition on the surface of the glass cover plate, and curing for 3-5 hours at 20-40 ℃ to form a substrate coating on the surface of the glass cover plate.
Preferably, the composition of siloxanes comprises tetraalkoxysilanes and aminosilane coupling agents;
preferably, the tetraalkoxysilane is tetramethoxysilane or tetraethoxysilane, and the aminosilane coupling agent is 3-aminopropyl triethoxysilane;
preferably, the volume ratio of the tetraalkoxysilane to the aminosilane coupling agent is 4-6:1.
Preferably, the silicone composition is applied to the surface of the substrate coating, and specifically includes: spin-coating the siloxane composition on the surface of the substrate coating, immersing in dilute hydrochloric acid for 5-10min, and solidifying at 80-100deg.C for 30-60min to obtain SiO on the surface of the substrate coating 2 A particle coating;
preferably, the pH of the dilute hydrochloric acid is 3-4.
Preferably, the composition of siloxanes further comprises a fluoroalkyl silane;
preferably, the volume ratio of the tetraalkoxysilane, the aminosilane coupling agent and the fluoroalkyl silane is 4-6:1:1-2.
Preferably, the fluoroalkyl silane is tridecyl fluorooctyl triethoxysilane or heptadecyl fluorodecyl triethoxysilane.
The invention provides an anti-dazzle coating, which is prepared by the method.
The invention also provides a vehicle-mounted display screen, which comprises a glass cover plate, wherein the surface of the glass cover plate is provided with the anti-dazzle coating.
The invention provides a method for forming an anti-glare coating on the surface of a glass cover plate, which comprises the steps of coating polydimethylsiloxane on the glass cover plate to form a substrate coating, coating a siloxane composition on the substrate coating, and forming SiO on the surface of the substrate coating of the polydimethylsiloxane after the composition reacts with hydrochloric acid 2 Is coated with particles of (a) a coating of particles. The preparation method can acidize the siloxane to form SiO 2 The particles are embedded on the surface of PDMS (polydimethylsiloxane) in a similar way, so that a surface with a specific micro concave-convex structure is constructed, and the anti-glare performance of the finally obtained coating is improved; and further, consider SiO 2 The particle layer has a plurality of Si-OH active surface sites, and when the composition of siloxane and fluoroalkyl silane is coated on the base coat, the fluoroalkyl silane can be used for coating SiO 2 The particles avoid the formation of bonds, thereby forming a fluorine-containing hybrid SiO 2 And (3) particle coating. As the fluorine-containing group has good hydrophobicity and oleophobicity, the adhesion of grease and scraps brought by fingerprints can be reduced to the greatest extent, and the fingerprint resistance of the finally obtained coating is improved.
In the invention, siO is constructed on the surface of the polydimethylsiloxane substrate 2 Particle coating which promotes SiO 2 The particles form mosaic on the PDMS surface, compared with the prior method which directly forms SiO on the surface of the substrate by sol-gel process 2 The particle coating can effectively construct a uniform coarse microstructure, so that a more stable anti-dazzle effect is exerted; meanwhile, the invention can further construct the SiO 2 The particles are of fluorine-containing hybrid structure, and the antifouling property is obtained, so that the problem that the adhesion between anti-dazzle and anti-fingerprint coatings caused by a secondary coating process in the prior art is not strong is avoidedAnd the defects of the finger can be easily removed without leaving marks on the surface or leaving marks when the finger contacts.
Detailed Description
The technical scheme of the present invention will be described in detail by means of specific examples, which should be explicitly set forth for illustration, but should not be construed as limiting the scope of the present invention.
Example 1
An antiglare coating, the method of making comprising:
1g of hydroxyl-terminated polydimethylsiloxane (PDMS-OH) and 0.02g of dibutyltin dilaurate are added into 10mL of n-hexane, and the mixture is stirred and mixed uniformly to obtain a composition solution of polydimethylsiloxane;
coating the composition solution of the polydimethylsiloxane on one side surface of a glass cover plate (made of soda-lime silicate glass) by using a spin coater, spin-coating at a speed of 1000rpm for 10s, and curing at 30 ℃ for 4 hours to form a base coating (with a thickness of about 1 μm) on the surface of the glass cover plate;
coating a mixture solution of tetraethoxysilane and 3-aminopropyl triethoxysilane with the volume ratio of 5:1 on the substrate coating by using a spin coater, wherein the use amount of the mixture solution is 10% of the use amount volume of the composition solution of the polydimethylsiloxane, spin coating for 20s at the speed of 5000rpm, standing for 30min at room temperature, immersing in a dilute hydrochloric acid aqueous solution with the pH of 3 for 5min, taking out, drying, curing at 90 ℃ for 50min, and forming the anti-glare coating on the surface of the glass cover plate.
Example 2
An antiglare coating, the method of making comprising:
1g of hydroxyl-terminated polydimethylsiloxane (PDMS-OH) and 0.02g of dibutyltin dilaurate are added into 10mL of n-hexane, and the mixture is stirred and mixed uniformly to obtain a composition solution of polydimethylsiloxane;
coating the composition solution of the polydimethylsiloxane on one side surface of a glass cover plate (made of soda-lime silicate glass) by using a spin coater, spin-coating at a speed of 1000rpm for 10s, and curing at 20 ℃ for 5h to form a base coating (with a thickness of about 1 μm) on the surface of the glass cover plate;
coating a mixture solution of tetraethoxysilane and 3-aminopropyl triethoxysilane with the volume ratio of 6:1 on the substrate coating by using a spin coater, wherein the use amount of the mixture solution is 10% of the use amount volume of the composition solution of the polydimethylsiloxane, spin coating for 20s at the speed of 5000rpm, standing for 30min at room temperature, immersing in a dilute hydrochloric acid aqueous solution with the pH of 4 for 10min, taking out, drying, curing at 80 ℃ for 60min, and forming the anti-glare coating on the surface of the glass cover plate.
Example 3
An antiglare coating, the method of making comprising:
1g of hydroxyl-terminated polydimethylsiloxane (PDMS-OH) and 0.02g of dibutyltin dilaurate are added into 10mL of n-hexane, and the mixture is stirred and mixed uniformly to obtain a composition solution of polydimethylsiloxane;
coating the composition solution of the polydimethylsiloxane on one side surface of a glass cover plate (made of soda-lime silicate glass) by using a spin coater, spin-coating at a speed of 1000rpm for 10s, and curing at 40 ℃ for 3h to form a base coating (with a thickness of about 1 μm) on the surface of the glass cover plate;
coating a mixture solution of tetraethoxysilane and 3-aminopropyl triethoxysilane with the volume ratio of 4:1 on the substrate coating by using a spin coater, wherein the use amount of the mixture solution is 10% of the use amount volume of the composition solution of the polydimethylsiloxane, spin coating for 20s at the speed of 5000rpm, standing for 30min at room temperature, immersing in a dilute hydrochloric acid aqueous solution with the pH of 3 for 8min, taking out, drying, curing at the temperature of 100 ℃ for 30min, and forming the anti-glare coating on the surface of the glass cover plate.
Example 4
An anti-fingerprint anti-glare coating, the preparation method of which comprises:
1g of hydroxyl-terminated polydimethylsiloxane (PDMS-OH) and 0.02g of dibutyltin dilaurate are added into 10mL of n-hexane, and the mixture is stirred and mixed uniformly to obtain a composition solution of polydimethylsiloxane;
coating the composition solution of the polydimethylsiloxane on one side surface of a glass cover plate (made of soda-lime silicate glass) by using a spin coater, spin-coating at a speed of 1000rpm for 10s, and curing at 40 ℃ for 3h to form a base coating (with a thickness of about 1 μm) on the surface of the glass cover plate;
coating a mixture solution of tetraethoxysilane, 3-aminopropyl triethoxysilane and tridecafluorooctyl triethoxysilane with the volume ratio of 5:1:1 on the substrate coating by using a spin coater, wherein the use amount of the mixture solution is 15% of the use amount volume of the composition solution of the polydimethylsiloxane, spin coating for 20s at a speed of 5000rpm, standing for 30min at room temperature, immersing in a dilute hydrochloric acid aqueous solution with the pH of 3 for 10min, taking out, drying, curing at 90 ℃ for 60min, and forming the fingerprint-resistant anti-dazzle coating on the surface of the glass cover plate.
Comparative example 1
An antiglare coating, the method of making comprising:
coating a mixture solution of tetraethoxysilane and 3-aminopropyl triethoxysilane with a volume ratio of 5:1 on one side surface of a glass cover plate (made of soda-lime silicate glass) by using a spin coater, spin-coating at a speed of 5000rpm for 20s, standing at room temperature for 30min, immersing in a dilute hydrochloric acid aqueous solution with a pH value of 3 for 5min, taking out, drying, curing at 90 ℃ for 50min, and forming the anti-glare coating on the surface of the glass cover plate.
Comparative example 2
An antiglare coating, the method of making comprising:
1g of hydroxyl-terminated polydimethylsiloxane (PDMS-OH) and 0.02g of dibutyltin dilaurate are added into 10mL of n-hexane, and the mixture is stirred and mixed uniformly to obtain a composition solution of polydimethylsiloxane;
coating the composition solution of the polydimethylsiloxane on one side surface of a glass cover plate (made of soda-lime silicate glass) by using a spin coater, spin-coating at a speed of 1000rpm for 10s, and curing at 30 ℃ for 4 hours to form a base coating (with a thickness of about 1 μm) on the surface of the glass cover plate;
coating tetraethoxysilane on the substrate coating by using a spin coater, wherein the use amount of the tetraethoxysilane is 10% of the use amount volume of the polydimethyl siloxane composition solution, spin-coating for 20s at a speed of 5000rpm, standing for 30min at room temperature, immersing in a dilute hydrochloric acid aqueous solution with the pH value of 3 for 5min, taking out, drying, and curing at 90 ℃ for 50min to form the anti-dazzle coating on the surface of the glass cover plate.
Comparative example 3
An antiglare coating, the method of making comprising:
1g of hydroxyl-terminated polydimethylsiloxane (PDMS-OH) and 0.02g of dibutyltin dilaurate are added into 10mL of n-hexane, and the mixture is stirred and mixed uniformly to obtain a composition solution of polydimethylsiloxane;
coating the composition solution of the polydimethylsiloxane on one side surface of a glass cover plate (made of soda-lime silicate glass) by using a spin coater, spin-coating at a speed of 1000rpm for 10s, and curing at 30 ℃ for 4 hours to form a base coating (with a thickness of about 1 μm) on the surface of the glass cover plate;
coating a mixture solution of tetraethoxysilane and 3-aminopropyl triethoxysilane with the volume ratio of 3:1 on the substrate coating by using a spin coater, wherein the use amount of the mixture solution is 10% of the use amount volume of the composition solution of the polydimethylsiloxane, spin coating for 20s at the speed of 5000rpm, standing for 30min at room temperature, immersing in a dilute hydrochloric acid aqueous solution with the pH of 3 for 5min, taking out, drying, curing at 90 ℃ for 50min, and forming the anti-glare coating on the surface of the glass cover plate.
The optical properties of the antiglare coatings obtained in the above examples and comparative examples were tested with reference to the GB/T36260-2018 standard, including gloss values at 60 °, visible light (400-700 nm) transmittance, and haze, with the following specific results:
as can be seen from the above table, the anti-glare coating according to the examples has excellent gloss, light transmittance, and haze, and can improve image clarity while suppressing glare of the glass cover plate.
In the present invention, the static contact angle (θ) of water, alkane and fatty oil on the anti-fingerprint anti-glare coating obtained in example 4 was measured with a contact angle measuring instrument, and the droplet size was 5 μl.
Substance (B) Static contact angle θ (°)
Water and its preparation method 133
Heptane (heptane) 77
Sunflower seed oil 108
The fingerprint of the anti-fingerprint anti-glare coating obtained in the embodiment 4 of the invention is easy to wipe and remove by using soft cloth.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (9)

1. A method of forming an anti-glare coating on a surface of a glass cover plate, comprising the steps of:
(1) Applying a polydimethylsiloxane composition to a surface of a glass cover plate to form a base coating on the surface of the glass cover plate;
(2) Applying a composition of a siloxane to the surface of the base coating to form SiO on the surface of the base coating 2 And (5) coating the particles to obtain the anti-dazzle coating.
2. The method of forming an anti-glare coating on a surface of a glass cover plate according to claim 1, wherein the composition of polydimethylsiloxane comprises polydimethylsiloxane, a catalyst, and a solvent;
preferably, the polydimethylsiloxane is hydroxyl-terminated polydimethylsiloxane, the catalyst is dibutyltin dilaurate, and the solvent is n-hexane.
3. The method for forming an anti-glare coating on a surface of a glass cover plate according to claim 1 or 2, wherein the applying of the polydimethylsiloxane composition to the surface of the glass cover plate specifically comprises: and (3) spin-coating the polydimethylsiloxane composition on the surface of the glass cover plate, and curing for 3-5 hours at 20-40 ℃ to form a substrate coating on the surface of the glass cover plate.
4. A method of forming an anti-glare coating on a glass cover plate surface according to any one of claims 1 to 3, wherein the composition of siloxanes comprises tetraalkoxysilane and aminosilane coupling agent;
preferably, the tetraalkoxysilane is tetramethoxysilane or tetraethoxysilane, and the aminosilane coupling agent is 3-aminopropyl triethoxysilane;
preferably, the volume ratio of the tetraalkoxysilane to the aminosilane coupling agent is 4-6:1.
5. The method of forming an anti-glare coating on a surface of a glass cover sheet according to any one of claims 1 to 4, wherein the applying a composition of silicone to the surface of the base coating layer comprises: spin-coating the composition of siloxane on the surface of said substrate coating, immersing in diluted hydrochloric acid5-10min, and curing at 80-100deg.C for 30-60min to form SiO on the surface of the substrate coating 2 A particle coating;
preferably, the pH of the dilute hydrochloric acid is 3-4.
6. The method of forming an anti-glare coating on a surface of a glass cover plate according to any one of claims 1 to 5, wherein the composition of siloxanes further comprises fluoroalkyl silanes;
preferably, the volume ratio of the tetraalkoxysilane, the aminosilane coupling agent and the fluoroalkyl silane is 4-6:1:1-2.
7. The method of forming an anti-glare coating on a surface of a glass cover plate according to claim 6, wherein the fluoroalkyl silane is tridecyl fluorooctyl triethoxysilane or heptadecyl fluorodecyl triethoxysilane.
8. An antiglare coating prepared by the method of any one of claims 1 to 7.
9. A vehicle-mounted display screen comprising a glass cover sheet having the antiglare coating of claim 8 on a surface thereof.
CN202311689215.4A 2023-12-11 2023-12-11 Method for forming anti-glare coating on surface of glass cover plate and vehicle-mounted display screen Pending CN117700120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311689215.4A CN117700120A (en) 2023-12-11 2023-12-11 Method for forming anti-glare coating on surface of glass cover plate and vehicle-mounted display screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311689215.4A CN117700120A (en) 2023-12-11 2023-12-11 Method for forming anti-glare coating on surface of glass cover plate and vehicle-mounted display screen

Publications (1)

Publication Number Publication Date
CN117700120A true CN117700120A (en) 2024-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311689215.4A Pending CN117700120A (en) 2023-12-11 2023-12-11 Method for forming anti-glare coating on surface of glass cover plate and vehicle-mounted display screen

Country Status (1)

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CN (1) CN117700120A (en)

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