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Preparation method of self-cleaning antireflection film with photocatalytic function on surface

A technology of anti-reflection film and photocatalysis, which is applied in the field of solar photocatalysis, can solve the problems of high refractive index of titanium oxide film, reduce the light transmittance of anti-reflection film, etc., and achieve the effect of high light transmittance

Active Publication Date: 2011-01-05
常州龙腾光热科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the refractive index of titanium oxide film is too high, and adding titanium oxide film will reduce the light transmittance of the anti-reflection coating. Self-cleaning film

Method used

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  • Preparation method of self-cleaning antireflection film with photocatalytic function on surface
  • Preparation method of self-cleaning antireflection film with photocatalytic function on surface

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0011] Example 1: Add 53mL of absolute ethanol, 3.2mL of deionized water and about 0.04mL of concentrated hydrochloric acid (mass fraction is 37%) in a clean beaker successively, and under magnetic stirring conditions, add 10mL of ethyl orthosilicate dropwise, wherein ethanol : tetraethyl orthosilicate: water: the molar ratio of hydrochloric acid is 20: 1.0: 4.0: 0.01, sealed and stirred for 5 hours, and aged at room temperature for 3 days to obtain Sol I. Add 95mL of absolute ethanol and 2.5mL of concentrated ammonia water (mass fraction 28%) in a clean beaker, stir magnetically, and add 10mL of TEOS solution dropwise, wherein the molar ratio of ethyl silicate: water: ethanol: ammonia water is 1:2 : 37: 0.8, magnetically stirred for 6 hours, aged at room temperature for 5 days, and refluxed at 78°C for 8 hours to obtain Sol II. Sol II and Sol I were mixed at a volume ratio of 4:1, and after stirring for 1 hour, an acid-base mixed silica sol was obtained, which was designated ...

Embodiment 2

[0017] Example 2: Mix Sol II and Sol I in Example 1 at a volume ratio of 3:1, and stir for 1 hour to obtain an acid-base mixed silica sol, which is designated as Sol V. Add 64.5mL absolute ethanol, 1.05mL deionized water and 2.85mL hydrochloric acid successively in a clean beaker, place the beaker on a magnetic stirrer and add 15ml of butyl phthalate solution dropwise while stirring, wherein ethanol: butyl phthalate : water: the molar ratio of hydrochloric acid is 25: 1.0: 4.0: 0.75; the sol prepared above is placed on a magnetic stirrer and stirred for about 4 hours in a sealed manner, and aged for 1 day. Then dilute the above titanium sol with absolute ethanol, the molar ratio of ethanol and butyl phthalate after dilution is 150:1 to obtain the titanium sol, denoted as sol VI.

[0018] Put 2×10cm glass substrates (light transmittance 90%) into 10% hydrochloric acid and 10% NaOH solution for 2 hours in sequence, then fully wash with absolute ethanol and distilled water by ult...

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Abstract

The invention discloses a preparation method of a self-cleaning antireflection film with the photocatalytic function on the surface, relating to the field of solar photocatalysis. The method comprises the following steps of: proportionally mixing silica sol obtained through the acid catalysis and the base catalysis of acetate orthosilicate; firstly, coating an antireflection film on a clean glass surface by using a czochralski method; then, coating a layer of titania sol prepared through the hydrolysis of N-butyl titanate; and solidifying at 120 DEG C for 2 h and thermally treating at 500 DEG C for 2 h to obtain the self-cleaning antireflection film with the transmittance over 96 percent and the photocatalytic function on the surface. The antireflection film on the glass surface has higher transmittance while ensuring the firm combination with the glass; and the surface of the antireflection film has the photocatalytic function and the self-cleaning function.

Description

technical field [0001] The invention relates to a method for preparing a self-cleaning anti-reflection film with a photocatalytic function on the surface, and relates to the field of solar photocatalysis. Background technique [0002] Whether it is photovoltaic power generation of solar energy or light-to-heat conversion and utilization of solar energy, it is necessary to transmit as much sunlight as possible through the surface glass (tube), and then convert it into electricity or heat by a photoelectric conversion cell or a light-to-heat absorption plate. With the current glass manufacturing process, the glass with the best light transmittance can only reach 90% light transmittance. There are still about 10% of sunlight that cannot reach the photoelectric or photothermal conversion components. In order to improve the utilization rate of sunlight, it is necessary to add one or more layers of anti-reflection film on the glass surface to reduce the reflection of light. At t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34
Inventor 陈若愚王健伍余科钟璟王红宁刘小华
Owner 常州龙腾光热科技股份有限公司
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