Abstract: The surface conductivity changes of solid layers deposited on silicone rubber under high humidity as a function of conditioning time in room conditions were studied. The measurements were carried out on flat samples in a glass hygrostat. It was shown that the surface conductivity of kaolin layer deposited on RTV-2 silicone decreases 4 times after 30 days of conditioning. However, the layer prepared from a natural dust from Glogow pollution test station shows different properties. The increase of layer hydrophobicity is related with the hygroscopicity decrease.

Keyword(s): hydrophobic properties ; hygroscopic properties ; leakage current
Note: XVII International Symposium on High Voltage Engineering, Hannover, August 22-26, 2011, paper E-002


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