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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

Active Publication Date: 2022-08-02
广东卡百利新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the defects of poor self-cleaning performance of existing antibacterial coatings, the application provides a self-cleaning antibacterial coating and its preparation method

Method used

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  • Self-cleaning antibacterial coating and preparation method thereof

Examples

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Effect test

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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Abstract

The invention relates to the field of coatings, and particularly discloses a self-cleaning antibacterial coating and a preparation method thereof. The self-cleaning antibacterial coating is prepared from the following substances in parts by weight: 80 to 100 parts of matrix emulsion, 3 to 10 parts of water, 0.1 to 5 parts of functional additive, 4 to 8 parts of self-cleaning antibacterial particles and 15 to 50 parts of composite filler, the self-cleaning antibacterial particle is a microsphere with a core-shell structure, the microsphere with the core-shell structure comprises an inner core matrix and a coating layer coating the surface of the inner core matrix, and the coating layer is a porous titanium dioxide aerogel film. The preparation method comprises the following steps: S1, preparing materials; s2, mixing, grinding and dispersing; s3, performing secondary mixing; according to the invention, the formula and composition of the coating are optimized, and the structure of the self-cleaning antibacterial particles is further optimized, so that the surface pollutant loading resistance is improved, and the antibacterial durability is improved.

Description

technical field [0001] The present application relates to the field of coatings, in particular to a self-cleaning antibacterial coating and a preparation method thereof. Background technique [0002] Coatings play an important role in the field of building materials, which can not only protect the main material from erosion, but also play a decorative effect. As we all know, microorganisms are widely distributed in our living environment. Under the conditions of suitable temperature and humidity, microorganisms will multiply on the surface of the paint, destroy the performance of the paint, and then lose its protective effect on the main material. [0003] In order to prevent the breeding of harmful bacteria and keep the environment clean, antibacterial coatings came into being, becoming the most simple and effective way to reduce harmful microorganisms in the environment. Antibacterial coating is a functional architectural coating that can kill bacteria and bacteria. [0...

Claims

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Application Information

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IPC IPC(8): C09D5/14
CPCC09D5/14C08K7/26C08K9/10C08K7/24C08K2201/011
Inventor 王辉伍建军
Owner 广东卡百利新材料科技有限公司
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