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Preparation method of carbon fiber composite silicone rubber electrothermal ultra hydrophobic paint

A technology of compounding silicone rubber and super-hydrophobic coating, applied in coating and other directions, can solve the problems of poor anti-icing effect and decrease in hydrophobicity, and achieve the effects of low cost, delaying ice coating and melting, and flexible adaptation.

Active Publication Date: 2019-01-01
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Application Information

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Problems solved by technology

[0004] The purpose of this application is to provide a method for preparing a carbon fiber composite silicone rubber electrothermal super-hydrophobic coating to solve the problem that the surface hydrophobicity of ordinary super-hydrophobic coatings decreases and the anti-icing effect is poor in low-temperature and high-humidity environments

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  • Preparation method of carbon fiber composite silicone rubber electrothermal ultra hydrophobic paint
  • Preparation method of carbon fiber composite silicone rubber electrothermal ultra hydrophobic paint

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preparation example Construction

[0022] refer to figure 1 , the embodiment of the present application provides a method for preparing a carbon fiber composite silicone rubber electrothermal superhydrophobic coating, comprising the following steps:

[0023] Step S1, performing hydrophobic modification on carbon fibers with plasma gas;

[0024] Step S2, compounding the modified carbon fiber with the silicone rubber coating to obtain the carbon fiber composite silicone rubber electrothermal super-hydrophobic coating.

[0025] Apply the carbon fiber composite silicone rubber electrothermal superhydrophobic coating to the surface to be protected by brushing method, and cure in the air for 48-72 hours until the composite coating is completely formed.

[0026] This application combines the thermal effect of electrothermal coatings, the superhydrophobicity of superhydrophobic coatings and the low surface energy characteristics of superhydrophobic coatings to prepare a new type of insulator semiconductor superhydroph...

Embodiment 1

[0041] 0.5g 0.02mm carbon fiber is modified by plasma gas, the specific parameters are peak voltage 15kV, flow rate of working gas Ar 1slm, flow rate of argon gas for monomer (HMDSN) 18sccm, spacing 15mm, moving speed of electric translation stage 1mm / s. The modified carbon fiber is compounded with 10g of silicone rubber coating, and the carbon fiber content is 5%. The ultrasonic time was 12 hours to obtain a uniformly dispersed silicone rubber coating, which was painted on a glass plate and cured for 48 hours to obtain a super-hydrophobic coating. The test shows that the hydrophobic angle is 151°, the slip angle is 10.5°, and the surface conductivity is 1.87×10 -5 s / m, 10kV pressurized with infrared imager, the ice coating experiment shows that the carbon fiber composite silicone rubber superhydrophobic coating has good heat generation performance, and the maximum surface temperature rise is 3.6°C, which can delay ice coating and ice melting in low temperature environment ...

Embodiment 2

[0043] 0.5g 0.1mm carbon fiber is modified by plasma gas, the specific parameters are peak voltage 15kV, flow rate of working gas Ar 1slm, flow rate of argon gas for monomer (HMDSN) 18sccm, spacing 15mm, moving speed of electric translation stage 1mm / s. The modified carbon fiber is compounded with 10g of silicone rubber paint, and the carbon fiber content is 10%. The ultrasonic time was 24 hours, and a well-dispersed silicone rubber coating was obtained. The coating was painted on a glass plate, and cured for 48 hours to obtain a superhydrophobic coating. The test shows that the hydrophobic angle is 142°, the slip angle is 14.1°, and the surface conductivity is 6.92×10 -5 s / m, 10kV pressurization and infrared imager, the ice coating experiment shows that the carbon fiber composite silicone rubber superhydrophobic coating has good heat generation performance, and the maximum temperature rise of the surface is 4.2 °C, which can delay ice coating and melting in low temperature ...

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Abstract

The invention discloses a preparation method of a carbon fiber composite silicone rubber electrothermal ultra hydrophobic paint. The preparation method comprises following steps: carbon fiber is subjected to plasma gas hydrophobic modification; the modified carbon fiber and silicone rubber paint are combined so as to obtain the carbon fiber composite silicone rubber electrothermal ultra hydrophobic paint. According to the preparation method, electrothermal paint heat effect, ultra hydrophobic paint ultra hydrophobicity, and ultra hydrophobic paint low surface energy characteristic are combinedso as to obtain the novel insulator semiconductor ultra hydrophobic composite anti-icing paint. A coating layer prepared from the carbon fiber composite silicone rubber electrothermal ultra hydrophobic paint possesses excellent ultra hydrophobicity; the hydrophobic angle is larger than 140 DEG, the drift angle is smaller than 15 DEG C; the coating layer possesses excellent heating performance; icing delaying and ice melting functions are achieved at low temperature environment; coating layer strength is high, wear resistance is excellent, stability is high, electrical performance is excellent, and using requirements of the electrical engineering external insulation field at low temperature environment are satisfied.

Description

technical field [0001] The application relates to the technical field of electrical engineering external insulation, in particular to a preparation method of a carbon fiber composite silicone rubber electrothermal super-hydrophobic coating. Background technique [0002] Icing of transmission lines can easily cause accidents such as conductor galloping, disconnection, pole (tower), insulator flashover, line tripping, and even paralysis of the power grid, which seriously threatens the safe operation of the power system and affects people's normal production and life. Huge economic loss and certain social impact. [0003] In recent years, superhydrophobic materials have attracted extensive attention from scholars and engineers at home and abroad, and have great potential in solving the problem of anti-icing on transmission lines. The characteristic of superhydrophobic materials is that water droplets can spontaneously fuse and slide along the surface after colliding with the s...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D7/62
CPCC09D7/62C09D183/04C08K9/00C08K7/06
Inventor 何运华宋玉锋程雪婷郭新良刘荣海
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST