Similarity between Treeing Lifetime and PD Resistance in Aging Mechanisms for Epozy Nanocomposites
PD (partial discharge) resistance is prominent in polymer nanocomposites, which is enhanced by nano- segmentation of matrices, tight coupling in interfaces, and pile-up of nano fillers on surfaces. Treeing resistance is determined by partial dielectric breakdown of solids to produce initial trees followed by widening and extending hollow channels due to internal PDs. Therefore, treeing turns out to be related to PD resistance, when PDs are predominant in treeing breakdown. Such phenomena were actually observed in epoxy nanocomposites. Similar aging processes are considered to be underlying in both treeing lifetime and PD resistance. Such similarity is discussed and substantiated by SEM images of tree channels.
nanocomposites polymer nanocomposites partial discharge treeing interfaces coupling agents
Toshikatsu Tanaka
IPS Research Center, Waseda University 2-2 Hibikino, Wakamatsu-ku, Kitakyushu-shi 808-0135, Japan
国际会议
哈尔滨
英文
741-744
2009-07-19（万方平台首次上网日期，不代表论文的发表时间）