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Fluorine-containing super-hydrophobic coating and preparing method and application thereof

A super-hydrophobic coating and coating technology, applied in the direction of coating, can solve the problem of carcinogenicity of ammonium perfluorooctanoate, achieve super-hydrophobicity, good dispersion effect, and improve comprehensive efficiency.

Inactive Publication Date: 2017-11-17
日氟荣高分子材料(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there is now evidence that PFOA is considered a possible carcinogen

Method used

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Embodiment Construction

[0027] The present invention will be further described through specific examples below, and these examples are only used to illustrate the present invention, and are not intended to limit the protection scope of the present invention.

[0028] The invention provides a fluorine-containing super-hydrophobic coating. In parts by mass, the coating includes 15-25 parts of polyamide-imide resin, 30-50 parts of polytetrafluoroethylene emulsion, 2-6 parts of Aluminum oxide, 1-3 parts of sodium sulfite and 15-25 parts of deionized water.

[0029] Above-mentioned fluorine-containing superhydrophobic coating, wherein, the mass ratio of described polyamide-imide resin and polytetrafluoroethylene emulsion is 1:2.

[0030] Above-mentioned fluorine-containing superhydrophobic coating, wherein, the mass ratio of described aluminum oxide and sodium sulfite is 2:1.

[0031] The above-mentioned fluorine-containing superhydrophobic coating, wherein, in parts by mass, the polytetrafluoroethylene ...

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Abstract

The invention discloses a fluorine-containing super-hydrophobic coating. The coating is prepared from, by mass, 15-25 parts of polyamide-imide resin, 30-50 parts of polytetrafluoroethylene emulsion solution, 2-6 parts of aluminum oxide, 1-3 parts of sodium sulfide, and 15-25 parts of deionized water. The fluorine-containing super-hydrophobic coating is easy to synthesize, the actual construction process can be completed simply through coating in one time, and thus the purpose of lowering the cost and increasing synergism is achieved; a composite dispersant is adopted, the dispersing effect on polytetrafluoroethylene is achieved, and further comprehensive effectiveness of the coating is improved; selected aluminum oxide and sodium sulfite serve as auxiliaries, and the self-layering performance of the super-hydrophobic coating is improved; the fluorine-containing super-hydrophobic coating has excellent performance of having high hydrophobicity, resisting acid-alkali resistance, resisting high-temperature resistance, resisting salt, and being high in adhesive force and rigidity.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a fluorine-containing superhydrophobic coating and its preparation method and application. Background technique [0002] Super-hydrophobic coating is a special coating whose surface is not easily adhered by other sticky substances or easily removed after adhesion. This kind of coating is widely used in household appliances, cooking utensils, automobiles, machinery, chemical industry and other industries due to its anti-adhesive properties such as extremely low surface energy, small friction coefficient and easy sliding. [0003] The basic film-forming substances of superhydrophobic coatings are fluororesins and binders. The choice of fluororesin plays a crucial role in the non-stick properties of superhydrophobic coatings. There are many kinds of fluororesins. Among many fluororesins, polytetrafluoroethylene (PTFE) has the smallest friction coefficient, so PTFE is the first choice for s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/18C09D179/08C09D7/12
CPCC08K2003/2227C09D127/18C08L79/08C08K13/02C08K3/22C08K3/30C08K5/42
Inventor 山口达雄
Owner 日氟荣高分子材料(上海)有限公司
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