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.
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[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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