@inproceedings{9812b83234a8412abf3f8f2697b76a72,
title = "Space charge distribution in low-density polyethylene (LDPE)/pumice composite",
abstract = "Low-density Polyethylene (LDPE)/Pumice composites with different pumice weight percentage (1 wt\%, 2 wt\% and 5 wt\%) were prepared by melt blending process in torque rheometer. Space charge distribution in composites and pure LDPE were investigated with pulsed electro-acoustic method (PEA). The results indicate that most of the space charge in pure LDPE under high electrical field was homo-polarity space charge which was gathered near both sides of the two electrodes. Oppositely, the space charge distribution in LDPE/pumice composite makes large differences. There was a great amount of hetero-polarity space charges appeared near cathode in LDPE/pumice composites, and the quantity of hetero-polarity space charge increased along with the increasing of pumice content. A great amount of positive charge was injected in LDPE/Pumice composite with pumice 5 wt\% near the anode side, and these positive charges moved toward to the cathode of the sample when the electrical field strength increased to 30kV/mm and 50KV/mm. As the circuit was shorted, the decay of space charge vs. time is measured for all the samples. It shows that the space charge in pure LDPE and LDPE/Pumice composite with pumice 1 wt\% decayed rapidly, nevertheless the space charge in LDPE/Pumice composite with pumice 2 wt\% and 5 wt\% decayed more slowly. There was quiet a few of space charges in pumice 5 wt\% composite after short-circuited over 60 min.",
keywords = "Ldpe, Pea, Space charge",
author = "Bai Han and Zhi Sun and Yang Chen and Fuqiang Tian and Xuan Wang and Qingquan Lei",
year = "2009",
doi = "10.1109/ICPADM.2009.5252258",
language = "英语",
isbn = "9781424443680",
series = "Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials",
pages = "969--972",
booktitle = "2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009",
note = "2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009 ; Conference date: 19-07-2009 Through 23-07-2009",
}