A kind of amphiphobic antibacterial easy-to-clean coating and its preparation method and application
An easy-to-clean, coating technology, applied in the application of kitchen appliances, amphiphobic antibacterial and easy-to-clean coatings, the field of preparation of amphiphobic, anti-bacterial and easy-to-clean coatings, to achieve the effect of reducing adhesion and good antibacterial properties
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[0027] On the one hand, the present invention provides a kind of preparation method of amphiphobic antibacterial easy-to-clean coating, and the method comprises:
[0028] (1) chitosan is placed in glacial acetic acid aqueous solution, carry out ultrasonic stirring, then stir at high speed until chitosan dissolves completely;
[0029] (2) under ultrasonic agitation, in the chitosan solution that step (1) obtains, drip silver nitrate aqueous solution, stir after finishing dropping, then decompression distillation removes glacial acetic acid and water;
[0030] (3) Mix the product obtained in step (2) with silica sol and fluorine-containing polyester polymer, stir evenly at a high speed, and then perform ultrasonic stirring.
[0031] In the present invention, the ultrasonic stirring can be carried out in an ultrasonic stirrer, and the conditions of the ultrasonic stirring preferably include: the frequency is 20-25KHz.
[0032] In the present invention, there is no special requir...
Embodiment 1
[0058] This embodiment is used to illustrate the amphobic antibacterial and easy-to-clean coating of the present invention and its preparation method.
[0059] (1) Preparation of silica sol: at 1000rpm, 18 parts by weight of ethyl orthosilicate are added to 20 parts by weight of ethanol to obtain an ethanol solution of ethyl orthosilicate, and then at 300rpm, add orthosilicate to ethyl orthosilicate 17wt% hydrochloric acid solution was added dropwise to the ethanol solution of the ester until the pH value was 3 to obtain a transparent silica sol.
[0060] (2) Preparation of fluorine-containing polyester polymer: 15 parts by weight of hexafluorobutyl acrylate (purchased from Harbin Xuejia Fluorine Silicon Chemical Co., Ltd.) was placed in a reaction bottle equipped with a condensation and stirring device, and 20 parts by weight were added Parts of 1,4-dioxane and 20 parts by weight of dimethyl sulfoxide, after dissolving hexafluorobutyl acrylate, blowing nitrogen gas to remove ...
Embodiment 2
[0064] This embodiment is used to illustrate the amphobic antibacterial and easy-to-clean coating of the present invention and its preparation method.
[0065] (1) Preparation of silica sol: at 800rpm, 20 parts by weight of ethyl orthosilicate are added to 22 parts by weight of ethanol to obtain an ethanol solution of ethyl orthosilicate, and then at 200rpm, add orthosilicate to ethyl orthosilicate 25wt% nitric acid solution was added dropwise to the ethanol solution of the ester until the pH value was 2 to obtain a transparent silica sol.
[0066] (2) Preparation of fluorine-containing polyester polymer: put 20 parts by weight of hexafluorobutyl methacrylate (purchased from Harbin Xuejia Fluorine Silicon Chemical Co., Ltd.) into a reaction bottle equipped with a condensation and stirring device, add 10 parts by weight of ethanol and 20 parts by weight of N,N-dimethylformamide, after dissolving hexafluorobutyl methacrylate, blowing nitrogen gas to remove oxygen in the reaction...
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