Voltage Endurance Characteristics of Epoxy/Silica Nanocomposites
Voltage Endurance Characteristics of Epoxy/Silica Nanocomposites
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DOI：
10.1002/ecj.10338
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发表时间：
2011-12-01
影响因子：
0.3
通讯作者：
Tanaka, Toshikatsu
中科院分区：
文献类型：
--
作者：
Iizuka, Tomonori;Uchida, Katsumi;Tanaka, Toshikatsu
制备了两种环氧树脂/二氧化硅纳米复合材料，特别是Aerosil和Nanopox试样，以澄清纳米填料分散和偶联剂对电场耐久性的影响。SEM观察表明，纳米填料在前一种试样中分散良好，而在后一种试样中存在一定程度的团聚现象。这种差异导致了局部放电电阻和树枝电阻的不同特性。纳米填料的加入提高了复合材料的耐局部放电性能，纳米填料的均匀分散不仅提高了复合材料的耐树枝化性能，而且提高了复合材料的耐树枝化性能。偶联剂对两种试样的抗树枝化也有效。纳米填料和偶联剂可以改善局部放电和抗树枝化性能，但树枝化性能可以根据纳米填料的分散程度而提高或降低。(C)2011 Wiley Periodicals，Inc. Electron Comm Jpn，94（12）：65-73，2011;在线发表于Wiley Online Library（wileyonlinelibrary.com）。DOI 10.1002/ecj.10338
Two kinds of epoxy/silica nanocomposites, specifically Aerosil and Nanopox specimens, were prepared to clarify the effect of nano-filler dispersion and of coupling agents on electric field endurance. According to SEM observation, nano-fillers were well dispersed in the former specimens, while some agglomeration was found in the latter specimens. This difference caused different characteristics for partial discharge resistance and treeing resistance. Partial discharge resistance was improved only by adding nano-fillers, and treeing resistance was improved not only by adding nano-fillers but also by uniformly dispersing the nano-fillers. Coupling agents were also effective for treeing resistance in both kinds of specimens. It was then clarified that nano-fillers and coupling agents could improve partial discharge and treeing resistance, but that treeing resistance could be upgraded or degraded depending on the level of nano-filler dispersion. (C) 2011 Wiley Periodicals, Inc. Electron Comm Jpn, 94(12): 65-73, 2011; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/ecj.10338