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Preparation method of self-cleaning glass

A self-cleaning and glass technology, applied in the field of self-cleaning glass preparation, can solve the problems of narrow spectral response range, poor cleaning timeliness, poor wear resistance, etc., to avoid mutual interference, reduce optical distortion rate, and increase wear resistance. Effect

Active Publication Date: 2013-08-07
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new method that can be combined with the coating of the float glass production line, through multi-element step-by-step doping, two methods of layered coating, strict control of the thickness, speed, temperature and dopant ratio of the coating, It overcomes many problems such as poor wear resistance, low light transmittance, narrow spectral response range and poor self-cleaning timeliness in the absence of light, which are common in self-cleaning glass

Method used

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  • Preparation method of self-cleaning glass

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Effect test

preparation example Construction

[0033] This embodiment relates to a kind of preparation method of self-cleaning glass, and its basic steps are successively: 1. Doping metal ion (iron, nickel, aluminum, tungsten, vanadium, zinc, tin, molybdenum) on glass surface coating film with Sol-gel method , cadmium, rhenium, chromium, silver) of SiO 2 The substrate, and drying molding; 2. Using the CVD method on the coated SiO 2 TiO doped with non-metallic ions (N, S, C, P, halogen elements) is coated again on the glass substrate 2 3. Baking the coated glass sample at a high temperature in a muffle furnace.

[0034] The specific embodiment of the present embodiment is: 1. primary coating (Sol-gel method): organosilicon (3ml~15ml), hydrolysis inhibitor (4ml~12ml), organic solvent (35ml~100ml) mixed solution A, and in 40 Stir evenly for 30min~60min at ℃; for the mixture B of high-concentration acid 0.2ml~2ml and deionized water (1ml~5ml), add B slowly to A, and stir vigorously at 40℃ for 2h~5h to form a mixture Liquid ...

Embodiment 1

[0037] The specific steps are similar to the description of the experimental content, and the specific reactants and additions are as follows:

[0038] 1. One-time coating (Sol-gel method): mixed solution A of tetraethyl orthosilicate 4ml, diethanolamine 4ml, absolute ethanol 35ml, stirred evenly at 40°C for 30 minutes; glacial acetic acid 2ml, deionized water 1ml Stir the mixed solution B vigorously at 40°C for 2 hours to form the mixed solution C; to the mixed solution D of 0.05g ferric chloride and 35ml absolute ethanol, slowly add D to C, continue to keep warm and stir for 0.5h to form F; finally Cool to room temperature; spray with a spray gun at a flow rate of 0.5 L / min; place the coated glass in a drying oven at a drying temperature of 80°C and a drying time of 10 minutes. After drying, put it into a muffle furnace for slow heating-heat treatment, the maximum temperature is 500°C, the heating rate is 1.5°C / min, and the holding time is 0.5h;

[0039] 2. Secondary coatin...

Embodiment 2

[0041] The specific steps are similar to the description of the experimental content, and the specific reactants and additions are as follows:

[0042] Primary coating: mixed solution A of tetraethyl orthosilicate 6ml, acetylacetone 4ml, and absolute ethanol 60ml; mixed solution B of nitric acid (98%) 0.2ml, deionized water 2ml; silver nitrate 0.1g, absolute ethanol 60ml The mixture D is sprayed on the glass at a flow rate of 2L / min; the coated glass is placed horizontally in a drying oven, the drying temperature is 100°C, and the drying time is 15 minutes. After drying, put it into a muffle furnace for slow heating-heat treatment, the maximum temperature is 450°C, the heating rate is 6°C / min, and the holding time is 2h;

[0043] Secondary coating: Pour 6L of Ti(OC 3 h 7 ) 4 Liquid (dry environment, fume hood operation). Introduce high-purity N into the CVD ventilation pipeline 2 , O 2 and SO 2 , implement secondary coating.

[0044] The self-cleaning glass prepared by...

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Abstract

The invention relates to a preparation method of self-cleaning glass. Due to hierarchically film coating by two methods, the binding force between a film layer and the surface of the glass can be improved, the abrasion resistance of a thin film can be increased, the surface compactness of the film layer can be improved, the light aberration rate can be reduced, and each doped ion can not be interfered with one another; due to first film coating by a Sol-gel method, the metal ions (non-gaseous) can be doped, and the self-cleaning time under the condition of light-free illumination is prolonged; and due to second film coating by a CVD (chemical vapor deposition) method, the non-metal ions (gaseous) can be doped, and the use ratio of the self-cleaning thin film to visible light can be improved.

Description

technical field [0001] The invention relates to a preparation method of self-cleaning glass. Background technique [0002] Titanium dioxide (TiO 2 ) has strong photocatalytic and hydrophilic properties, and its chemical properties are stable, non-toxic, and low cost. It is an ideal photocatalyst, so titanium dioxide self-cleaning glass has broad application prospects. At present, there are more than a dozen methods for preparing self-cleaning glass. In summary, there are mainly liquid-phase preparation methods, chemical gas-phase methods, physical gas-phase methods, electrochemical methods, spray pyrolysis methods, self-assembly methods, etc., among which sol-gel (Sol-gel) method and chemical vapor deposition (CVD) method have attracted much attention. Compared with other methods, the Sol-gel method has a simple preparation process and low cost, while the CVD method forms a dense and uniform film, which is very suitable for industrial large-scale production, and can be com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/34
Inventor 黄金李祥伟唐少俊
Owner CHERY AUTOMOBILE CO LTD