摘要
用电声脉冲法(PEA)测量了纯环氧试样不同温度下玻璃化温度转变前后的空间电荷分布,并分析了不同电场下环氧材料中异极性电荷形成的原因。实验发现不同温度下的空间电荷分布具有明显的差异;水分等挥发性杂质对环氧材料中的空间电荷形成具有较大影响。
The space charge distributions below and above the glass transition temperature （Tg） at different temperatures are measured with the pulsed electro - acoustic （PEA） method. And the formation of hetero - charge under different electrical field at each temperature is also analyzed. The results show that the space charge distributions at each temperature have the obvious diversity, and the water content and other volatile impurities have great influence on the formation of snace charge.
出处
《四川电力技术》
2012年第6期65-67,85,共4页
Sichuan Electric Power Technology
关键词
玻璃化温度
环氧树脂
空间电荷
挥发性杂质
glass transition temperature
epoxy resin
space charge
volatile impurity
