Preparation method of self-cleaning coating of an air purification device shell
A technology for air purification equipment and self-cleaning coatings, applied to paints containing biocide, antifouling/underwater coatings, etc., can solve problems such as air pollution and frequent cleaning of the shell, and achieve improved activity and excellent photocatalytic degradation Activity and antibacterial activity, the effect of increasing the rate of the reaction
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Embodiment 1
[0021] A method for preparing a self-cleaning coating on an air purification device shell, comprising the following steps:
[0022] (1) After mixing silicon powder and bismuth powder according to the mass ratio of 18:1, add them into an oven, and bake them for 2 hours to obtain a composite carrier;
[0023] (2) In parts by weight, add 9 parts of sodium tungstate dihydrate and 5 parts of gallium nitrate to 60 parts of deionized water, mix well, raise the temperature of the mixture to 75°C, stir for 10 minutes, and then add Add 4 parts of the composite carrier prepared in step (1) and 0.1 part of phosphotungstic heteropolyacid, continue to keep warm and stir for 20 minutes, then add the mixture into a closed reaction kettle, raise its temperature to 190°C, and keep it warm for 4 hours Finally, after centrifugation, washing and drying, the self-cleaning additive is obtained;
[0024] (3) In parts by weight, after mixing and stirring 55 parts of pure acrylic emulsion, 15 parts of...
Embodiment 2
[0034] A method for preparing a self-cleaning coating on an air purification device shell, comprising the following steps:
[0035] (1) After mixing silicon powder and bismuth powder according to the mass ratio of 22:1, add them to the oven, and bake them for 2.5 hours to obtain a composite carrier;
[0036] (2) In parts by weight, add 10 parts of sodium tungstate dihydrate and 5 parts of gallium nitrate into 65 parts of deionized water. After mixing evenly, raise the temperature of the mixture to 78°C, stir for 13 minutes, and then add Add 6 parts of the composite carrier prepared in step (1) and 0.2 parts of phosphotungstic heteropolyacid, continue to keep warm and stir for 25 minutes, then add the mixture into a closed reaction kettle, raise its temperature to 195°C, and keep it warm for 4.5 hours Finally, after centrifugation, washing and drying, the self-cleaning additive is obtained;
[0037] (3) In parts by weight, after mixing and stirring 58 parts of pure acrylic emu...
Embodiment 3
[0047] A method for preparing a self-cleaning coating on an air purification device shell, comprising the following steps:
[0048] (1) After mixing silicon powder and bismuth powder according to the mass ratio of 25:1, add them into an oven, and bake them for 3 hours to obtain a composite carrier;
[0049] (2) In parts by weight, add 11 parts of sodium tungstate dihydrate and 6 parts of gallium nitrate to 70 parts of deionized water, mix well, raise the temperature of the mixture to 80°C, stir for 15 minutes, and then add Add 8 parts of the composite carrier prepared in step (1) and 0.3 parts of phosphotungstic heteropolyacid, continue to keep warm and stir for 30 minutes, then add the mixture into a closed reaction kettle, raise its temperature to 200°C, and keep it warm for 5 hours Finally, after centrifugation, washing and drying, the self-cleaning additive is obtained;
[0050](3) In parts by weight, after mixing and stirring 60 parts of pure acrylic emulsion, 20 parts o...
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