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Self-cleaning antireflection coating and its preparation method, and self-cleaning antireflection glass and its preparation method

A self-cleaning and coating technology, applied in the direction of coating, etc., can solve the problems of wear resistance and self-cleaning coating solution not being environmentally friendly, coated glass can not have both anti-reflection properties, etc., to achieve increased anti-reflection rate and good wear resistance Sexuality and anti-reflection, the effect of good anti-reflection

Active Publication Date: 2014-01-15
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the technical problem that the coated glass in the prior art cannot have good antireflection, wear resistance and self-cleaning properties and the coating solution used in it is not environmentally friendly

Method used

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Examples

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preparation example Construction

[0022] The present invention also provides the preparation method of described self-cleaning antireflection coating, comprises the following steps:

[0023] S1, prepare silicon dioxide hydrosol and titanium dioxide hydrosol containing nitrogen-containing compound respectively;

[0024] S2, preparing zirconium dioxide aqueous dispersion and tin antimony oxide aqueous dispersion;

[0025] S3. Add titanium dioxide hydrosol containing nitrogen-containing compounds, zirconium dioxide aqueous dispersion and tin antimony oxide aqueous dispersion in proportion to the silica hydrosol prepared in step S1, and mix uniformly to obtain the self-cleaning antireflection coating .

[0026] In the present invention, the step of preparing the silica hydrosol is as follows: adding a basic catalyst and a silicon source into water containing a nucleating agent, and stirring to obtain the silica hydrosol. Wherein, the nucleating agent is various nucleating agents commonly used in the formation of...

Embodiment 1

[0040] (1) Raw material preparation:

[0041] Preparation of silica hydrosol: Weigh 12.5 grams of 22nm ludox AS-40 silica sol (40wt%, sigma aldrich) as a sol nucleating agent, add 600 grams of deionized water and add arginine to its concentration under stirring was 2mmol / L, finally added 172g of ethyl orthosilicate, stirred at 60°C for 5h, aged for 24h and then used HNO 3 Adjust the pH to 3 to obtain the silica hydrosol A1 of this example.

[0042] Preparation of titanium dioxide hydrosol containing urea: Weigh 300 g of deionized water and add HNO 3 Adjust the pH to 2, then add 6.6 grams of acetylacetone and 4 grams of urea, add 100 grams of tetrabutyl titanate under stirring conditions, the stirring temperature is 60 ° C, and the stirring time is 3 hours, to obtain the titanium dioxide water containing urea of ​​this embodiment Sol B1.

[0043] Preparation of noble metal nanoparticles hydrosol: 2.5mL of 5wt% H 2 PtCl 6 The solution was added to 175 grams of water, and 30...

Embodiment 2

[0051] The self-cleaning anti-reflection coating S2 and the self-cleaning anti-reflection glass S20 of this embodiment were prepared in the same steps as in Example 1, the difference being:

[0052] In step (2), add 1 part by weight of B1, D1, and E1 to 1 part by weight of A1 under stirring, without adding C1, and continue stirring for 1 hour to obtain the self-cleaning anti-reflection coating S2 of this embodiment; in S2, The content of amorphous nano-silica is 4.1wt% (particle size is 60nm), the content of nano-titanium dioxide is 1.78wt%, the content of nano-zirconia is 3 wt%, and the content of nano-ATO is 1.54wt% (particle size is 5nm), the molar ratio of the total amount of titanium dioxide and zirconium dioxide to silicon dioxide is 1:1.5;

[0053] In step (3), using photovoltaic ultra-clear glass as the substrate, the above self-cleaning anti-reflective coating S2 is coated on the glass substrate by roller coating method, and then dried at 200°C and tempered at 700°C t...

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Abstract

The invention provides a self-cleaning antireflection coating and its preparation method. The self-cleaning antireflection coating is a mixture of amorphous nanometer silica, a nitrogen-containing compound, water and a chain-structured functional metal oxide, wherein the functional metal oxide comprises nanometer titanium dioxide, nanometer zirconium dioxide and nanometer tin antimony oxide, the particle size of the amorphous nanometer silica is 40-100nm, and a molar ratio of the total amount of zirconium dioxide to the amount of silica is 1:(1-3). The invention also provides a self-cleaning antireflection glass and its preparation method. The self-cleaning antireflection glass prepared by adopting the self-cleaning antireflection glass coating has good antireflection, wear resistance and self-cleaning performances, and still has good wear resistance and antireflection performances after long-time use. Additionally, the self-cleaning antireflection coating is an aqueous coating, and is very environmentally-friendly.

Description

technical field [0001] The invention belongs to the technical field of glass materials, and in particular relates to a self-cleaning anti-reflection coating and a preparation method thereof, a preparation method of a self-cleaning anti-reflection glass and self-cleaning anti-reflection glass prepared by the method. Background technique [0002] In order to improve the light transmittance of photovoltaic glass, there are two main solutions in the prior art: one is to coat the photovoltaic glass with an anti-reflection film (such as a silicon dioxide film), and the other is to coat the photovoltaic glass with a self-cleaning Thin films (such as titanium dioxide films). [0003] Among them, the anti-reflection film can greatly increase the initial light transmittance of photovoltaic glass, and the anti-reflection rate in the visible light range can reach more than 2.5%. However, with the increase in the use time of photovoltaic glass, its surface is covered by various pollutan...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/12C09D5/00C03C17/23
Inventor 黎宪宽周维孙永亮
Owner BYD CO LTD
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