塩霧試験におけるポリマー材料の撥水性特性の評価

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  • Evaluation of Hydrophobicity of Polymer Material on Salt Fog Aging Tests

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To evaluate the long-term reliability of polymeric material used for electric power equipment in the coastal area and to establish its insulation testing technique, we evaluated influence of conductivity change on hydrophobicity and relationship between hydrophobicity and electrical property of silicone rubber (SiR) by performing a salt fog aging test. As the result, hydrophobicity of SiR recovered even at very high conductivity. In addition, the required times for recovery between the hydrophobicity and the electrical property are different. The time when the leakage current begins to be detectable might be a good index of the degradiation diagnosis.

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