Formation and migration of space charge packet in low density polyethylene  

作　　者：ZHENG Feihu 1 , ZHANG Yewen 1 , GONG Bin 1 , ZHU Jianwei 1 & WU Changshun 2 1. Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, China 2. China National Center for Quality Supervision and Test of Electric Ware and Cable, Shanghai 200093, China 

出　　处：《Science China(Technological Sciences)》2005年第3期354-360,共7页中国科学（技术科学英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.50277026);theKey Program of Minis try of Education of China(Grant No.02100);the 973 Project of Ministry of Science and Technology of China(Grant No.2001CB610406).

摘　　要：Pressure wave propagation (PWP) method was utilized to observe the space charges packet-like behavior in sheet samples of low-density polyethylene (LDPE) under the relative low electric field. The experimental results show that space charge packets are always generated at the anode and move across the sample to the cathode regardless of the polarity of DC voltage. This paper discusses the migration of space charge packets at 30–40°C, the possible charge resource of space charge packets carriers and trap level of the space charge.

关 键 词：solid dielectric low-density polyethylene space CHARGE packet trap. 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]