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Long-acting self-repairing super-hydrophobic ceramic coating as well as preparation method and application thereof

A ceramic coating and super-hydrophobic technology, applied in the direction of coating, can solve the problem of poor wear resistance of inorganic nano-particle-based super-hydrophobic coatings, and achieve the effect of improving the hydrophobicity of the coating, solving the poor flexibility and improving the wear resistance.

Active Publication Date: 2020-06-19
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Technical problem to be solved: the present invention provides a long-acting self-healing superhydrophobic ceramic coating and its preparation method and application for the problem that the wear resistance of inorganic nanoparticle-based superhydrophobic coating is poor and its application is limited.

Method used

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  • Long-acting self-repairing super-hydrophobic ceramic coating as well as preparation method and application thereof
  • Long-acting self-repairing super-hydrophobic ceramic coating as well as preparation method and application thereof
  • Long-acting self-repairing super-hydrophobic ceramic coating as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0029] A preparation method of a long-acting self-repairing superhydrophobic ceramic coating. In this embodiment, the inorganic nanoparticles are titanium dioxide, the siloxane monomer is methyltrimethoxysilane, the volatile organic solution is acetone, and the pH adjusting solution is hydrochloric acid Solution, the preparation steps are as follows:

[0030] (1) Disperse 10 parts by mass of inorganic nanoparticles, 8 parts by mass of acidic pH adjusting solution, 1 part by mass of tetraethyl orthosilicate, and 4 parts by mass of siloxane monomer in 80 parts by mass of volatile organic solvent, and continuously stir 12 h, the ceramic coating was prepared;

[0031] (2) Disperse 8 parts by mass of acidic nano silica sol with a particle size of 135-200nm, 6 parts by mass of 35wt.% ammonia water, 12 parts by mass of deionized water, 0.5 parts by mass of tetraethyl orthosilicate, and 0.5 parts by mass of hydrophobic treatment agent In 80 parts by mass of volatile organic solvents,...

Embodiment 2

[0038] A method for preparing a self-repairing superhydrophobic ceramic coating. In this embodiment, the inorganic nanoparticles are titanium dioxide, the siloxane monomer is methyltrimethoxysilane, the volatile organic solution is acetone, and the pH adjusting solution is hydrochloric acid solution. The preparation steps are as follows:

[0039] (1) Disperse 20 parts by mass of inorganic nanoparticles, 16 parts by mass of acidic pH adjusting solution, 2 parts by mass of tetraethyl orthosilicate, and 8 parts by mass of siloxane monomer in 60 parts by mass of volatile organic solvent, and continuously stir 24 h, the ceramic coating was prepared;

[0040] (2) 15 parts by mass of acidic nano-silica sol with a particle diameter of 35-135nm, 10 parts by mass of 35wt.% ammonia water, 16 parts by mass of deionized water, 1 part by mass of tetraethyl orthosilicate, and 2 parts by mass of hydrophobic treatment agent Dispersed in 60 parts by mass of volatile organic solvents, and conti...

Embodiment 3

[0047] image 3 Be the self-healing superhydrophobic ceramic coating mechanical property in embodiment 2. According to the ISO 2409 standard, the cross-cut adhesion test is carried out. The adhesion strength of the tape used on the coating is not less than (10±1) N / 25mm. It can be found that the coating has no peeling off and 100% adhesion, which meets the standard. level 0. The pencil hardness test found that after the coating was scratched by a 3H pencil, the coating was not damaged and was still intact and dense, which proved that the coating hardness was > 3H.

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Abstract

The invention relates to a long-acting self-repairing super-hydrophobic ceramic coating as well as a preparation method and application thereof. Inorganic nanoparticles, an acidic pH regulating solution, tetraethyl orthosilicate and a siloxane monomer are dispersed in a volatile organic solvent to prepare a ceramic coating; acidic nano silica sol, ammonia water, deionized water, tetraethyl orthosilicate and a hydrophobic treatment agent are dispersed into a volatile organic solvent to prepare a super-hydrophobic nano coating; the volatile organic solvent is removed from the super-hydrophobic nano coating to obtain a dry super-hydrophobic aggregate; the super-hydrophobic aggregate is put into a ball milling tank for ball milling to obtain super-hydrophobic nano powder; and the super-hydrophobic nano-powder is ultrasonically dispersed in the ceramic coating, an acrylate copolymer is added as a dispersing agent, an adhesion promoter and propylene glycol methyl ether acetate are then added, and stirring is performed to obtain the long-acting transparent self-repairing super-hydrophobic ceramic coating. The method is simple in process, easy to operate and suitable for large-scale preparation and production.

Description

technical field [0001] The invention belongs to the technical field of preparation of super-wetting functional coating materials, and in particular relates to a long-acting self-repairing super-hydrophobic ceramic coating and its preparation method and application. Background technique [0002] Super-hydrophobic surface refers to a solid surface on which water droplets can roll off under the action of micro-dynamic forces under the combined action of surface micro-nano structures and low-surface-energy substances. It can be widely used in industrial fields such as three-proof fabrics, anti-dew and anti-frost for air conditioners, anti-bacterial and anti-mildew for building materials, oil-water separation, anti-bioadhesion interfaces and water collection systems. However, under the action of external mechanical forces such as wear and impact, and external environments such as condensation and frosting, the most critical microstructures and low surface energy substances that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D7/61C09D7/62
CPCC09D183/04C09D4/00C09D7/61C09D7/62C08G77/04C08K9/00C08K3/36C08K2003/2241C08K2201/011
Inventor 张友法顾万诚余新泉
Owner SOUTHEAST UNIV
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