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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AI-Extracted Technical Summary

Problems solved by technology

[0005] In order to improve the defects of poor self-cleaning performance of existing antibacterial ...

Method used

(2) embodiment 4~6 is compared with embodiment 1, the data of embodiment 4~6 is obviously higher than the data of embodiment 1, because embodiment 4~6 has further optimized the structure of self-cleaning antibacterial particle , the self-cleaning antibacterial particles used in this application are microspheres with a core-shell structure, which form a multi-level channel structure through the coating layer coated on the surface of the inner core matrix and the inner core matrix with a porous structure, which effectively improves the release of the dispersion medium from a single channel and the release of nano For the problem of uneven speed of antibacterial materials, the self-cleaning effect and antibacterial durability of the self-cleaning antibacterial coat...

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.

Application Domain

Antifouling/underwater paintsPaints with biocides

Technology Topic

Anti bacterialEmulsion +6

Image

Examples

Experimental program(16)
Comparison scheme(4)
Effect test(1)

Example Embodiment

[0047] 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.

Example Embodiment

[0052] 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.

Example Embodiment

[0054] 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.

PUM

Property	Measurement	Unit
Aperture	5.25 ~ 10.8	µm
Average pore size	0.32 ~ 0.85	µm
Particle size	10000.0	mesh

Description & Claims & Application Information

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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

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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