Self-cleaning antibacterial coating and preparation method thereof
An antibacterial coating and self-cleaning technology, applied in the field of coatings, can solve problems such as poor self-cleaning performance, achieve the effects of improving antibacterial stability and durability, improving antibacterial durability, and improving adhesion and durability
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preparation example 1
[0048] A porous silica particle:
[0049] 0.5kg hexadecyl trimethoxy ammonium bromide, 80kg mass fraction 8% ethanol solution, 12kg cyclohexane and 0.5kg1mol / L ammoniacal liquor are stirred and mixed, and the mixed solution is collected;
[0050] 0.1kg of aminopropyltrimethoxysilane and 1kg of absolute ethanol were added to 3kg of ethyl orthosilicate, stirred and mixed, and the reaction solution was collected;
[0051] The reaction was added dropwise to the mixed solution, kept stirring at 55°C for the reaction, the filter cake was collected by filtration, washed and then vacuum-dried at 45°C to prepare porous silica particles 1 with an average pore size of 5.25-10.85 μm.
preparation example 2
[0053] Compared with preparation example 1, in this preparation example 2, the same quality of sodium lauryl sulfate was used instead of cetyltrimethoxyammonium bromide in preparation example 1 to prepare porous dioxide with an average pore size of 0.32-0.85 μm. Silicon particles 2.
preparation example 3
[0055] Titanium dioxide sol solution: take 0.1kg of tetrabutyl titanate and stir and mix with 1kg of absolute ethanol, and collect the composite solution;
[0056] Then get 0.6kg water, 1kg dehydrated alcohol, 0.2kg acetic acid, stir and mix, and collect the reaction solution;
[0057] The reaction solution was added to the composite solution, stirred and mixed, and then placed at 55° C. for aging for 24 hours, and the titanium dioxide sol solution was collected.
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