Antibacterial and mildew-proof coating as well as preparation method and application thereof
An antibacterial, antifungal, and coating technology, which is applied in antifouling/underwater coatings, coatings, conjugated diene coatings, etc., can solve the problems of poor antibacterial activity of nano-alumina, large specific surface area of nano-alumina, and surface energy thermodynamics. Instability and other problems, to achieve the effect of enhancing antibacterial and mildew resistance, keeping dry and stable, excellent drying and chemical stability
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[0050] The preparation method of described modified nano-alumina comprises the steps:
[0051] Mixing the raw materials used to prepare the modified nano-alumina, and performing ball milling;
[0052] The raw materials include nano-alumina, modifier and dispersant;
[0053] The modifying agent is selected from one or more of ascorbic acid, L-cysteine, L-arginine or L-alanine.
[0054] Nano-alumina is safe, low-toxic, and will not cause drug resistance problems. Active sites are collided on the surface of nano-alumina by ball milling, and specific modifiers are grafted on nano-alumina through active sites. Through the present invention The method of mechanical (ball milling)-chemical modification of nano-alumina will significantly improve the dispersibility of nano-alumina, facilitate its uniform dispersion in the emulsion, and further improve its antibacterial, mildew resistance and stability. At the same time, the modified nano-alumina also has excellent drying and chemical s...
Embodiment 1
[0087] This embodiment provides an antibacterial and antifungal coating based on nano-alumina and a preparation method thereof. details as follows:
[0088] (1) Preparation of modified nano-alumina:
[0089] Take 50g of zirconia beads with a particle size of 0.1mm and put them into a ball mill jar with a volume of 100ml, weigh 0.5g of commercially available alumina powder with a particle size of 3000mm, 0.5g of ascorbic acid, 0.25g of SDS powder and deionized water 50g, put into a ball mill jar.
[0090] At 37°C, set the speed of the ball mill (model: UBE-V2L, Hunan Deke Equipment Co., Ltd.) to 300rpm, and the ball milling time to 3h, turn off the ball mill, take off the ball mill jar after standing for 30min, and suck out the solution in the ball mill jar to obtain Ascorbic acid grafted nano-alumina colloid solution as modified nano-alumina.
[0091] (2) Preparation of antibacterial and antifungal coatings based on nano-alumina:
[0092] At 37°C, 30 g of commercially avai...
Embodiment 2
[0097] This embodiment provides an antibacterial and antifungal coating based on nano-alumina and a preparation method thereof. details as follows:
[0098] (1) Preparation of modified nano-alumina:
[0099] Take 50g of zirconia beads with a particle size of 0.1mm and put them into a ball mill jar with a volume of 100ml, weigh 0.5g of commercially available alumina powder with a particle size of 3000mm, 0.5g of ascorbic acid, 0.25g of SDS powder and deionized water 50g, put into a ball mill jar.
[0100] At 37°C, set the speed of the ball mill (model: UBE-V2L, Hunan Deke Equipment Co., Ltd.) to 300rpm, and the ball milling time to 3h, turn off the ball mill, take off the ball mill jar after standing for 30min, and suck out the solution in the ball mill jar to obtain Ascorbic acid grafted nano-alumina colloid solution as modified nano-alumina.
[0101] (2) Preparation of antibacterial and antifungal coatings based on nano-alumina:
[0102] At 37°C, 30 g of commercially avai...
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Abstract
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