An examination of the environments for aging of polymers

N. Frost, G. Xu, P. McGrath
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引用次数: 15

Abstract

Initial tracking wheel tests with alumina filled silicone rubber insulators show that the type of solution used influences the leakage current and material properties. The mixed salts solution causes little change in leakage current over the 500 hour test, but produces a significant change in the loss tangent of the sample. Synthetic rain testing showed a slower initial rate of change in leakage current compared with sodium chloride tests, but as testing progressed, the leakage current continued to increase while the sodium chloride leakage current did not increase significantly beyond the initial values over the same period. Upon examination of the dielectric properties, it was found that synthetic rain caused a significant change in the loss tangent. The degree of loss tangent degradation was influenced by the alumina filler level, with higher level samples exhibiting a greater loss tangent degradation.
对聚合物老化环境的检查
用氧化铝填充硅橡胶绝缘子进行的初步跟踪轮试验表明,所使用的溶液类型会影响泄漏电流和材料性能。在500小时的测试中,混合盐溶液对泄漏电流的影响很小,但对样品的损耗切线产生了显著的影响。与氯化钠试验相比,合成雨试验泄漏电流的初始变化速率较慢,但随着试验的进行,泄漏电流继续增加,而氯化钠泄漏电流在同一时期内没有明显超过初始值。在检查介电性能后,发现合成雨引起损耗正切的显著变化。损耗切线降解的程度受氧化铝填料水平的影响,较高水平的样品表现出更大的损耗切线降解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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