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Low-cost colloidal silica anti-reflection coating liquid and preparation and application thereof

A technology of silica sol and coating solution, applied in the direction of coating, etc., can solve the problems of poor stability, poor film-forming performance, and low anti-reflection film anti-reflection rate

Active Publication Date: 2016-03-30
DONGGUAN CSG SOLAR GLASS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water-based coating solution prepared by this scheme has poor stability because the nano-silica sol has not been modified, and the surface of the nano-silica particles contains a large number of active silanol groups, and the film-forming performance is poor and anti-reflective only by adding small molecular organic additives. Membrane anti-reflection rate is low

Method used

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  • Low-cost colloidal silica anti-reflection coating liquid and preparation and application thereof
  • Low-cost colloidal silica anti-reflection coating liquid and preparation and application thereof
  • Low-cost colloidal silica anti-reflection coating liquid and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The steps of preparing 1# coating solution are as follows :

[0051] (1) add deionized water in the reactor that 150g organic solvent type silica sol (organic solvent is methyl alcohol, silica sol mass content is 20%) is housed, and adjust sol pH to 2 with the dilute phosphoric acid of mass percent concentration 20% , wherein, the mass ratio of deionized water to the organic solvent silica sol is 2%, the mass ratio of dilute phosphoric acid to the organic solvent silica sol is 0.1%, and the mixed solution A is obtained by stirring evenly;

[0052] (2) Drop the silane coupling agent methyltrimethoxysilane into the mixed solution A, stir at room temperature for 4 hours to obtain the modified silica sol B, wherein the amount of the silane coupling agent added is 1% of the mass of the mixed solution A .

[0053] (3) Add methanol and stir evenly to prepare a coating solution with a solid content of 5%. The coating solution is numbered 1#.

[0054] Wherein, carry out soli...

Embodiment 2

[0076] The steps of preparing 2# coating solution are as follows:

[0077] (1) add deionized water in the reactor that 150g organic solvent-type silica sol (organic solvent is ethanol, silica sol mass content is 40%) is housed, and adjust sol pH to 3 with the dilute phosphoric acid of mass percent concentration 20% , wherein, the mass ratio of deionized water to the organic solvent silica sol is 10%, the mass ratio of dilute phosphoric acid to the organic solvent silica sol is 2%, and the mixed solution A is obtained by stirring evenly;

[0078] (2) Drop the silane coupling agent methyltrimethoxysilane into the mixed solution A, and stir at room temperature for 4 hours to obtain the modified silica sol B, wherein the addition amount of the silane coupling agent is 10% of the mass of the mixed solution A .

[0079] (3) Slowly add the leveling agent BYK333 and the wetting agent BNK-NSF067 as auxiliary agents into the modified silica sol B according to the mass 1:2, wherein th...

Embodiment 3

[0093] The steps of preparing 3# coating solution are as follows:

[0094] (1) Add deionized water to a reactor equipped with 150g commercially available organic solvent-type silica sol (organic solvent is propanol, and the mass content of silica sol is 30%), and adjust with dilute phosphoric acid of mass percent concentration 20%. The sol has a pH of 5, wherein the mass ratio of deionized water to the organic solvent silica sol is 7%, and the mass ratio of dilute phosphoric acid to the organic solvent silica sol is 1.5%, and the mixed solution A is obtained by stirring evenly;

[0095] (2) Drop the silane coupling agent methyltrimethoxysilane into the mixed solution A, and stir at room temperature for 4 hours to obtain the modified silica sol B, wherein the addition amount of the silane coupling agent is 7% of the mass of the mixed solution A .

[0096] (3) Slowly add leveling agent TEGO410, wetting agent EW332 and volatilization control agent N,N-dimethylformamide as auxili...

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Abstract

The present invention relates to low-cost colloidal silica anti-reflection coating liquid and a preparation and application thereof. The coating liquid is prepared by mixing raw materials which have a pH value of 2-5 and contain organic solvent-based colloidal silica, water, phosphoric acid, a silane coupling agent and auxiliaries, wherein the mass parts of the components are as follows: 9-15 parts of the solvent-based colloidal silica, more than 0.2 part of the water, 0.01-0.5 part of the phosphoric acid, 0.1-1.5 parts of the silane coupling agent, 0.01-2 parts of auxiliaries added as needed, and a solvent. By applying the coating liquid of the present invention to surfaces of optical instruments or solar devices such as glass, coatings with high light transmittance and low reflectivity are formed. Compared with the glass without the coating, the glass with the coating has the light transmittance which is improved by more than 1.7%, meanwhile, the stability of the coating liquid is improved, the existing coating may be gelatinized or layered after being stored for one month, but the coating liquid cannot be gelatinized or layered after being stored for more than half a year.

Description

technical field [0001] The invention relates to the technical field of antireflection of optical elements, in particular to an antireflection coating solution for glass and its preparation and application. Background technique [0002] Appropriate anti-reflection coatings on the surface of optical components can reduce the reflection loss on the surface of optical components. For example, anti-reflective glass coated with coating solution on the surface of glass can be used in many fields. For example, the protective glass panel used for solar cells can improve the power generation efficiency of solar cells, and the protective glass used for displays can improve the display effect and energy saving. [0003] At present, the anti-reflection film coating solutions on the market basically use organic solvents as the medium. When the anti-reflection glass is produced, a large amount of waste gas will be generated, which will cause serious harm to the environment and human body,...

Claims

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Application Information

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IPC IPC(8): C09D1/00C03C17/30
Inventor 周志文宋辉唐高山王科刘明刚纪朋远
Owner DONGGUAN CSG SOLAR GLASS
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