Effects of Electrode Materials on Space Charge in Low-Density Polyethylene
Chen Shaoqing1, Zheng Mingbo2, Wang Xia2, Peng Zongren2
1.Sichuan Electric Power Research Institute Chengdu 610072 China 2.State Key Laboratory of Electrical insulation and Power Equipment Xi’an Jiaotong University Xi’an 710049 China
Abstract:The effect of electrode on space charge in low-density polyethylene is investigated using the pulsed electro-acoustic (PEA) method. Commercial electrode materials are selected, for example, aluminum (Al), brass doped plumbum(Pb), brass doped zinc(Zn) and pure copper. The result shows that both hole and electron injecting from the electrodes into LDPE occurs; the higher work function of the electrode material, the more difficultly electron injecting; the lower work function of the electrode material, the more easily hole injecting; the Al(+)/ pure copper (-) electrode system can effectively suppress space charge injection, and thus the increment of local field due to space charge is reduced.
陈少卿, 郑明波, 王霞, 彭宗仁. 电极材料对低密度聚乙烯中空间电荷的影响[J]. 电工技术学报, 2012, 27(5): 105-108.
Chen Shaoqing, Zheng Mingbo, Wang Xia, Peng Zongren. Effects of Electrode Materials on Space Charge in Low-Density Polyethylene. Transactions of China Electrotechnical Society, 2012, 27(5): 105-108.
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