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《China Surface Engineering》 2019-01
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Effects of Texture Parameters on Surface Hydrophobicity of Silicone Rubber Composite Insulator

ZHAO Meiyun;TIAN Sen;WU Yang;LI Wei;ZHAO Xinze;Hubei Key Laboratory of Hydroelectric Machinery Design &Maintenance, China Three Gorges University;National United Engineering Laborary for Advanced Bearing Tribology, Henan University of Science and Technology;  
To improve the resistance of silicone rubber composite insulator to pollution flashover and ice flashover, a series of different textures with different parameters were processed on the surfaces of umbrella skirt samples via laser engraving to make them being superhydrophobic. The morphological characteristics of the textured sample surfaces were observed by three-dimensional profilometer and SEM. The hydrophobicity was analyzed by the contact angle measuring instrument and the high-speed camera system. The effect of different texture parameters on the hydrophobicity of silicone rubber was analyzed and the optimal dimensional parameters and the droplet bounce performance were obtained when the textured surfaces had the best hydrophobicity. Results show that the designed textures can obviously improve the hydrophobicity of the silicone rubber surface. The height of different textures is basically the same in the best superhydrophobic state, however, other size parameters of the textures are different. The convex textures show better super-hydrophobicity than that of the concave textures. The diamond column textured surface has the best superhydrophobic comprehensive characteristics, which can effectively reduce the staying time of the water droplets on the surface and reduce icing.
【Fund】: 国家自然科学基金(51605254 51475264);; 高端轴承摩擦学技术与应用国家地方联合工程实验室开放基金(201811)~~
【CateGory Index】: TQ333.93
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