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Preparation and wet flashover characteristics of silicone superhydrophobic coating
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Fanyun SU1, Zhengyong HUANG1, Yingfan ZHANG1, Junping LIN1, Yuan WEI2
Insulating Materials | 2023, 56(5) : 49 - 54
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Insulating Materials | 2023, 56(5): 49-54
• Material Research •
Preparation and wet flashover characteristics of silicone superhydrophobic coating
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Fanyun SU1, Zhengyong HUANG1, Yingfan ZHANG1, Junping LIN1, Yuan WEI2
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  • 1College of Electrical Engineering, Chongqing University, Chongqing 400030, China
  • 2Northwest Electric Power Design Institute, Xi′an 710075, China
Published: 2023-05-20 doi: 10.16790/j.cnki.1009-9239.im.2023.05.008
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Due to the presence of electric field, water droplets on the surface of hydrophobic coating are prone to generate corona discharge, which will further develop into surface flashover in severe cases. In order to improve the wet flashover voltage of coating, a superhydrophobic coating was prepared by nano-silica modified methyl silicone resin, the adhesion and wear resistance of the coating were tested, and then the flashover voltages of different types of coatings were measured and the surface flashover phenomena were observed. The results show that the adhesion of the superhydrophobic coatings reaches level 0. The coatings still maintain good superhydrophobicity after mechanical wear, and the static contact angle is greater than 155°. The wet flashover voltage of the coating reaches 26.2 kV, which is 42.4% higher than that of the RTV silicone rubber coating. The superhydrophobicity is conducive to the movement of water droplets on coating surface under electric field to create a dry area, therefore the superhydrophobic coating still has good insulating properties in wet environment.

superhydrophobic coating  /  methyl silicone resin  /  wet flashover voltage  /  wear resistance
Fanyun SU, Zhengyong HUANG, Yingfan ZHANG, Junping LIN, Yuan WEI. Preparation and wet flashover characteristics of silicone superhydrophobic coating[J]. Insulating Materials, 2023 , 56 (5) : 49 -54 . DOI: 10.16790/j.cnki.1009-9239.im.2023.05.008
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2023.05.008
  • Receive Date：2022-05-15
  • Online Date：2025-11-21
  • Published：2023-05-20
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  • Received：2022-05-15
  • Revised：2022-07-07
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    1College of Electrical Engineering, Chongqing University, Chongqing 400030, China
    2Northwest Electric Power Design Institute, Xi′an 710075, China
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光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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