Preparation method of self-cleaning toughened glass

A tempered glass and self-cleaning technology, applied in the field of tempered glass, can solve the problems of self-cleaning effect of titanium dioxide film breakage, decrease of self-cleaning effect, failure, etc.

Inactive Publication Date: 2014-12-10
FUJIAN GANGDA GLASS PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since anatase-type titanium dioxide is used as the main component of the self-cleaning film, and the glass surface is first sprayed and coated, and then the glass is tempered at a high temperature of 700 ° C, the titanium dioxide crys

Method used

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preparation example Construction

[0046] The embodiment of the present invention discloses a method for preparing self-cleaning tempered glass, comprising the following steps:

[0047] a) Spray the nano self-cleaning coating on the glass surface and dry it. The nano self-cleaning coating includes the following components:

[0048] Nano cobalt oxide, nano zirconia, nano molybdenum trioxide, water glass, hollow glass beads, palygorskite powder, sepiolite powder and solvent;

[0049] b) Soak the glass obtained in step a in an acid solution for acid treatment;

[0050] c) Bake the glass obtained in step b at a temperature of 200-300°C for 20-40 minutes, then temper it at 600-680°C for 6-10 minutes, and obtain a self-cleaning tempered glass after cooling.

[0051] The present invention avoids the use of anatase titanium dioxide as the main component of the self-cleaning membrane, and uses nano-cobalt oxide, nano-zirconia, nano-molybdenum trioxide, water glass, hollow glass beads, palygorskite powder and sepiolite ...

Embodiment 1

[0102] a) Mix 7g of nano-cobalt oxide, 9g of nano-zirconia, 15g of nano-molybdenum trioxide, 2g of water glass, 15g of hollow glass beads, 9g of palygorskite powder, 4g of sepiolite powder, and 40g of ethanol to obtain a nanometer self-cleaning coating;

[0103] The glass is ground, cleaned, dried, and then preheated at 270°C for 8 hours. The glass preferably includes the following composition: 50wt% SiO 2 ; 8 wt % Al 2 o 3 ; 16 wt % B 2 o 3 ; 16 wt % La 2 o 3 ; 9wt% ZnO; 1wt% Li 2 O;

[0104] Spray the nano self-cleaning coating prepared above on the glass surface with a thickness of 7mm, dry it, the spraying air source pressure is 12~16kg, the spraying speed is 3~4m / s, the nozzle diameter is 2mm, and the spraying distance is 4~6cm. The number of times of coating is 2~3 times, and the thickness of the self-cleaning coating obtained by spraying is 20~200nm. The spraying process is preferably in a closed environment to ensure that there is no wind and clean air in the e...

Embodiment 2

[0108] a) Mix 5g of nano-cobalt oxide, 10g of nano-zirconia, 18g of nano-molybdenum trioxide, 2g of water glass, 12g of hollow glass beads, 9g of palygorskite powder, 6g of sepiolite powder, and 40g of ethanol to obtain a nanometer self-cleaning coating;

[0109] The glass is ground, cleaned, dried, and then preheated at 270°C for 8 hours. The glass preferably includes the following composition: 50wt% SiO 2 ; 8 wt % Al 2 o 3 ; 16 wt % B 2 o 3 ; 16 wt % La 2 o 3 ; 9wt% ZnO; 1wt% Li 2 O;

[0110] Spray the nano self-cleaning coating prepared above on the glass surface with a thickness of 7mm, dry it, the spraying air source pressure is 12~16kg, the spraying speed is 3~4m / s, the nozzle diameter is 2mm, and the spraying distance is 4~6cm. The number of times of coating is 2~3 times, and the thickness of the self-cleaning coating obtained by spraying is 20~200nm. The spraying process is preferably in a closed environment to ensure that there is no wind and clean air in the ...

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Abstract

The invention provides a preparation method of self-cleaning toughened glass. The preparation method comprises the following steps: spraying a nanometer self-cleaning coating on the surface of glass, wherein the nanometer self-cleaning coating comprises the following components: nanometer cobalt oxide, nanometer zirconium oxide, nanometer molybdenum trioxide, water glass, hollow glass microballoons, palygorskite powder, sepiolite powder and a solvent; then soaking the glass in an acid solution for acid treatment; and baking the glass at the temperature of 200-300 DEG C for 20-40 minutes, then carrying out toughening treatment at 600-680 DEG C for 6-10 minutes, and cooling to obtain the self-cleaning toughened glass. According to the preparation method, the nanometer cobalt oxide, the nanometer zirconium oxide, the nanometer molybdenum trioxide, the water glass, the hollow glass microballoons, the palygorskite powder and the sepiolite powder are taken as main components of the nanometer self-cleaning coating, not only is an self-cleaning effect achieved through the synergistic effect of the components, but also a crystal form is not transformed after high-temperature treatment, so that the prepared self-cleaning toughened glass has a good self-cleaning effect.

Description

technical field [0001] The invention relates to the technical field of tempered glass, in particular to a preparation method of self-cleaning tempered glass. Background technique [0002] With the progress of society and the improvement of people's living standards, tempered glass has a wide range of applications, involving various fields of daily life such as construction, furniture, office supplies, and transportation. However, toughened glass has the problem of poor stain resistance during use, especially in the northern regions where there is a lot of dust in the atmosphere, serious air pollution, drought and little rain. The cleaning technology of tempered glass is demanding and difficult, and it is easy to pollute the surrounding environment after cleaning with a large amount of organic solvents and acidic detergents, and the discharge of cleaning waste is also a problem. Therefore, it is of great significance to develop tempered glass with self-cleaning function. ...

Claims

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Application Information

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IPC IPC(8): C03C17/22C03C17/23
Inventor 谢东明
Owner FUJIAN GANGDA GLASS PROD
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