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不溶污秽物浸润性试验分析

DOI: 10.13336/j.1003-6520.hve.2015.09.030, PP. 3042-3047

Keywords: 不溶污秽,浸润性,,硅油,污闪电压,憎水迁移性,轻重量分子

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Abstract:

绝缘子污闪过程与不溶污秽物的浸润性直接相关,研究不溶污秽物的浸润性具有重要意义。为此对几种典型不溶污秽物对水和硅油的浸润性开展了试验研究,得到了各物质的浸润速率,并分别就亲水性表面污秽物对闪络电压的影响和憎水性表面憎水迁移性与浸润性关系进行了分析。研究发现浸润性是不溶污秽物的物化特性与浸润液特性竞争的结果,亲水性表面污闪电压与不溶污秽物浸润性关系还没有明确的对应关系,憎水性表面憎水性的迁移速率快慢趋势与污秽物浸润速率完全一致,浸润性与憎水性表面污闪电压具有明确对应关系。试验结果从侧面证明了轻重量分子(LMW)迁移理论的正确性。

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