高电压技术2011，Vol.37Issue(11)：2786-2792,7.
Analysis of Trap-controlled Conduction in Modified PTFE
Analysis of Trap-controlled Conduction in Modified PTFE
WU Jiang 1WANG Jin-feng 1SHEN Bin 1ZHENG Xiao-quan1
作者信息
- 1. State Key Laboratory of Power Equipment and Electrical Insulation, Xi＇an Jiaotong University, Xi＇an 710049, China
- 折叠
摘要
Abstract
The reasonable conduction property is beneficial to release the deposited charges by conduction current in di- electric space charging environment, thus the level of the deep charging and the pulse discharge can effectively be weakened and inhibited. A traditional method for conductivity measuring under ground circumstance was used, and both the applied voltage and temperature were varied to determine the dependence of volume conductivity in PTFE modified by different filler contents. The results inferred the volume conductivity was significantly affected by the phenomenon of the percolation conduction, as well as the high-field conduction. The shallow and deep charge traps were considered to be a key factor in volume conductivity variation. In this theory, modified by inorganic semi conductive filler, the distribution of trap density and depth in PTFE can be controlled to achieve the ideal temperature dependent conduction property and high-field conduction property, which will finally lead to gentle release of the deposi ted charges while the electrostatic field reaches the conductivity-variation threshold.关键词
trap/conduction/modification/polymer/inorganic filler/anti-deep-charging propertyKey words
trap/conduction/modification/polymer/inorganic filler/anti-deep-charging property分类
信息技术与安全科学引用本文复制引用
WU Jiang,WANG Jin-feng,SHEN Bin,ZHENG Xiao-quan..Analysis of Trap-controlled Conduction in Modified PTFE[J].高电压技术,2011,37(11):2786-2792,7.
