Surface Roughness Effect on the Hydrophobicity Characteristic of Operating Composite Insulators
Song Wang,Tian Yuan,Jun Zhou,Qian-yu Wang +3 more
- pp 327-332
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TLDR
In this paper, surface roughness of composite insulators was suggested as the added parameter in hydrophobicity tests, which can lead the water drop to two kinds of states transitions and it can make sample static contact Angle changed up to 31% within 10 minutes, which will also cause the different results of two measurement methods.Abstract:
Pretreatment needs to be done before measuring the hydrophobicity of the composite insulators. However, the necessity of such pretreatment is questionable for operating composite insulators. Therefore, surface roughness of light pollution level, heavily pollution level, chalking and the impact of surface roughness on hydrophobicity characteristic (HC) was investigated in this paper. The paper does the research on the result indicated the surface roughness is one of main factor about the pretreatment effect on HC level and static contact angle. The pretreatment effect on HC level and static contact angle seemed to be very obvious and the percentage of static contact angle changed up to 15.3%, as the surface roughness was varied. The Ra and RSM of different pollution level shed percentage change up to 130% and 269%. While Ra and RSM of high surface roughness degree reach up to 3.242μm and 400μm, the hydrophobicity on the composite insulators lost permanent. The surface roughness can lead the water drop to two kinds of states transitions and it can make sample static contact Angle changed up to 31% within 10 minutes, which will also cause the different results of two measurement methods. Surface roughness of composite insulators was suggested as the added parameter in hydrophobicity tests.read more
Citations
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References
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TL;DR: The development of room temperature vulcanized (RTV) silicone coatings in China began in early 1985 and the main aspects of the research include improvements in the properties of the formula for better adhesion to porcelain and control of leakage current, the hydrophobicity transference mechanism, and aging.
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Journal Article
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