Characteristics of polymer insulator materials: Voltage-lifetime characteristics of DGEBA/MDA/SN system

被引：24
|
作者：
Cho, YS
Lee, HK
Shim, MJ
Kim, SW
机构：
[1] Univ Seoul, Dept Chem Engn, Dongdaemun Gu, Seoul 130743, South Korea
[2] Woosuk Univ, Dept Chem Engn, Wonju 565701, South Korea
[3] Univ Seoul, Dept Life Sci, Dongdaemun Gu, Seoul 130743, South Korea
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2000年 / 66卷 / 01期
关键词：
electrical insulation; epoxy resin; dielectric breakdown; lifetime; electrical tree;
D O I：
10.1016/S0254-0584(00)00272-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The voltage-lifetime characteristics of the new epoxy resin system, diglycidyl ether of bisphenol A (DGEBA)/4,4'-methylene dianiline (MDA)/succinonitrile (SN), have been investigated by using non-homogeneous electrode geometry. The lifetime dependence of the applied electric field well followed the empirical V(n)t=const model. The lifetime factors at 25, 70 and 100 degrees C were 5.128, 7.533 and 14.494, respectively. The dielectric breakdown mechanism at 25 degrees C was changed around 14kV. At high temperature, the thermal stress dominated the lifetime and at the low thermal stress, the thermal decomposition and distortion by electro-mechanical stress governed the dielectric breakdown under high electric field. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：70 / 76
页数：7
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