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Super-hydrophobic and super-selfcleaning composite coating and preparation method thereof as well as selfcleaning insulator used by super-hydrophobic and super-selfcleaning composite coating

A composite coating, super self-cleaning technology, applied in anti-fouling/underwater coatings, insulators, coatings, etc., can solve the problems of high RTV stress, easy to burst, and limited life of anti-fouling products, and achieve high-strength adhesion, Excellent water spray resistance

Inactive Publication Date: 2018-07-06
武汉疏能新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) Poor antifouling performance;
[0004] (2) Existing anti-fouling products have a limited service life due to the impact of the application process, and the pollution is toxic;
[0005] (3) The traditional RTV has high stress on the glass insulator and is easy to burst

Method used

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  • Super-hydrophobic and super-selfcleaning composite coating and preparation method thereof as well as selfcleaning insulator used by super-hydrophobic and super-selfcleaning composite coating
  • Super-hydrophobic and super-selfcleaning composite coating and preparation method thereof as well as selfcleaning insulator used by super-hydrophobic and super-selfcleaning composite coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A self-cleaning insulator, including an insulator body, the outer surface of the above-mentioned insulator body is provided with a paint coating formed by a super-hydrophobic super-self-cleaning composite coating, the thickness of the coating is 50 μm, and the super-hydrophobic super-self-cleaning composite coating is The preparation method comprises the following steps:

[0024] 1) Add 2 parts of polytetrafluoroethylene powder to 10 parts of nano-hydrophobic agent under stirring state, stir for 5 minutes to make it evenly mixed;

[0025] 2) Add 0.3 parts of polyazide silane paint to the mixed solution obtained in step 1) under stirring, stir for 5 minutes to make it evenly mixed, and then the super-hydrophobic and super-self-cleaning composite paint can be obtained;

[0026] Wherein, the nano-hydrophobic agent is selected from NM-V15, and the polytetrafluoroethylene powder has a particle size of 3 μm.

Embodiment 2

[0028] A self-cleaning insulator, comprising an insulator body, the outer surface of the above-mentioned insulator body is provided with a paint coating formed by a super-hydrophobic super-self-cleaning composite coating, the thickness of the coating is 60 μm, and the super-hydrophobic super-self-cleaning composite coating is The preparation method comprises the following steps:

[0029] 1) Add 3.5 parts of polytetrafluoroethylene powder to 12 parts of nano-hydrophobic agent under stirring, and stir for 5 minutes to make it evenly mixed;

[0030] 2) Add 0.5 parts of polyazide silane paint to the mixed solution obtained in step 1) under stirring, stir for 7 minutes to make it evenly mixed, and then the super-hydrophobic and super-self-cleaning composite paint can be obtained;

[0031] Wherein, the nano-hydrophobic agent is selected from NM-V15, and the particle size of polytetrafluoroethylene powder is 7 μm.

Embodiment 3

[0033] A self-cleaning insulator, including an insulator body, the outer surface of the above-mentioned insulator body is provided with a paint coating formed by a super-hydrophobic super-self-cleaning composite coating, the thickness of the coating is 70 μm, and the super-hydrophobic super-self-cleaning composite coating is The preparation method comprises the following steps:

[0034] 1) Add 6 parts of polytetrafluoroethylene powder to 15 parts of nano-hydrophobic agent under stirring state, stir for 7 minutes to make it evenly mixed;

[0035] 2) Add 0.8 parts of polyazoxysilane paint to the mixed solution obtained in step 1) under stirring, stir for 5 minutes to make it evenly mixed, and then obtain the super-hydrophobic and super-self-cleaning composite paint;

[0036] Wherein, the nano-hydrophobic agent is selected from NM-V15, and the polytetrafluoroethylene powder has a particle size of 15 μm.

[0037] The performance tests of the self-cleaning insulators provided in E...

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Abstract

The invention relates to a super-hydrophobic and super-selfcleaning composite coating and a preparation method thereof as well as a selfcleaning insulator used by the super-hydrophobic and super-selfcleaning composite coating. The super-hydrophobic and super-selfcleaning composite coating is prepared from the following raw materials in parts by weight: 10 to 15 parts of a nano hydrophobing agent,2 to 6 parts of polytetrafluoroethylene powder and 0.3 to 0.8 part of a polysilazane coating. The super-hydrophobic and super-selfcleaning composite coating provided by the invention is prepared by combining an organic material with an inorganic material, namely combining a polytetrafluoroethylene wax packing with a nano silicon dioxide modified-hydrophobing agent, so that a lotus leaf-similar multiple-micro-nano-surface structure is formed, and super-hydrophobic and super-wear-resistant functions are realized by correspondingly using low surface energy and the micro-nano structure of the lotus leaf-similar multiple-micro-nano-surface structure. A coating layer formed by curing the super-hydrophobic and super-selfcleaning composite coating provided by the invention has a static hydrophobicangle larger than 160 degrees and a rolling angle smaller than 5 degrees, has excellent water fog resisting, dew prevention and snow and rain prevention functions, is high in adhesive force, and is still super-hydrophobic after being scraped.

Description

technical field [0001] The invention relates to the technical field of insulators, in particular to a super-hydrophobic super-self-cleaning composite coating, a preparation method thereof and a self-cleaning insulator used therein. Background technique [0002] At present, the widely used anti-fouling flashover coating is RTV (room temperature vulcanized silicone rubber). The single index of anti-fouling flashover is acceptable, but the overall performance is not high. Its static hydrophobic angle is about 110°. Due to the insufficient angle, it is far from meeting the requirements of water mist resistance and antifouling. In addition, due to the high stress on the glass insulator, it is easy to cause bursting, etc., which affects the service life. At present, glass insulators mainly have the following three problems: [0003] (1) Poor antifouling performance; [0004] (2) Existing anti-fouling products have a limited service life due to the impact of the application proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/18C09D183/16C09D5/16C09D7/61C09D7/65H01B17/50H01B17/52
Inventor 魏长伟
Owner 武汉疏能新材料有限公司
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