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文章编号： 16726987（2018）02002105； DOI： 10.16351/j.16726987.2018.02.003
王琰， 郝春成*， 劳运当， 辛萌
（青岛科技大学 材料科学与工程学院，山东 青岛 266042）
摘要： 采用熔融共混及热压交联的方法制备了炭黑（CB）/低密度聚乙烯（LDPE）/乙烯醋酸乙烯共聚物（EVA）半导电电极复合材料。研究了CB含量的变化对半导电电极的电阻率的影响以及对绝缘层空间电荷的屏蔽效果。结果表明：半导电电极中CB含量增加时，电阻率降低，当CB含量（质量分数）超过25%后，电阻率减小不明显，表明试样在该CB比例下已接近过导电电阻的逾渗值；空间电荷测试时，随着电场强度的增大，绝缘层的空间电荷密度先增大后减小；半导电电极CB的含量增加时，绝缘层的空间电荷含量先增加后减小。
关键词： 半导电电极； 空间电荷； 低密度聚乙烯； 电阻率
中图分类号： TQ 325.1+2文献标志码： A
引用格式：王琰， 郝春成， 劳运当, 等. 炭黑/低密度聚乙烯/乙烯醋酸乙烯共聚物复合材料对交联聚乙烯空间电荷注入的影响\[J\]. 青岛科技大学学报（自然科学版）， 2018， 39（2）： 2125.
WANG Yan, HAO Chuncheng, LAO Yundang, et al. Influence of CB/LDPE/EVA composites for space charge injected into crosslinked polyethylene\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2018, 39(2)： 2125.
Influence of CB/LDPE/EVA Composites for Space
Charge Injected into Crosslinked Polyethylene
WANG Yan, HAO Chuncheng, LAO Yundang, XIN Meng
(College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: The carbon black (CB)/lowdensity polyethylene(LDPE)/ethylenevinyl acetate copolymer (EVA)semiconductive shielding compositeshave been prepared by melt blending and hotpress crosslinking. In this paper, the effects of the change of CB content on the resistivity of semiconductive electrode and the injection of the space charge in the insulation layerwerestudied. The results show that with the increase of CB content, the resistivity of the semiconductive electrode decreases.Until the content of CB exceeds 25%, the decreases of resistivity is not obvious, showing that the sample is close to the percolation value of conductive resistance under this CB content. When the space charge is tested, with the increase of the electric field strength, the space charge density of the insulating layer increases firstly and then decreases. With the increase of the content of CB in semiconductive electrode, the space charge of the insulating layer increases firstly and then decreases.
Key words: semiconductive electrode; space charge; lowdensity polyethylene; resistivity
收稿日期： 20161130
基金项目： 国家自然科学基金资助项目（51077075）；电力设备电气绝缘国家重点实验室资助项目（EIPE17211）；山东省自然科学基金资助项目（ZR2014EEM006）.
作者简介： 王琰（1994—），女，硕士研究生.*通信联系人.
