湿度对高场荷电低密度聚乙烯中热刺激电流的影响

L. Qingquan
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引用次数: 0

摘要

发现LDPE样品一旦暴露于潮湿空气中一定时间,无论是在poll之前还是之后,即使在poll后保持在0% RH 72 h,也会出现额外的湿度诱导TSC峰值。该峰可能与非晶界面中的俘获离子有关。考虑极化前在水饱和空气中保存72 h的f-LDPE试样的TSC方向随偏置场极性的变化,可能表明吸收的水分子起到了浅阱的作用。然而,在我们的实验中,填充物可能起到深层陷阱的作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of humidity on thermally stimulated currents in high field-charged low-density polyethylene with and without a mineral filler
An additional humidity-induced TSC peak in LDPE specimens once exposed to humid air for certain times, whether before or after poling, even then kept in 0% RH for 72 h after poling, is found. This peak can be associated with trapped ions in amorphous-crystalline interface. A consideration on change of TSC direction with polarities of bias field in f-LDPE specimens stored in water saturated air for 72 h before poling may suggest the absorbed water molecules act as shallow traps. Whereas it can be mainfest on our experiment that the fillers serve possibly as deep traps.
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