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应用科学学报 ›› 2001, Vol. 19 ›› Issue (4): 283-287.

• 论文 •    下一篇

交联聚乙烯中空间电荷分布及其机理研究

李吉晓1, 张冶文1,2, 郑飞虎1, 吴长顺2, 夏钟福1   

  1. 1. 同济大学波耳固体物理研究所, 上海 200092;
    2. 国家电线电缆质量监督检验中心, 上海 200093
  • 收稿日期:2001-01-18 修回日期:2001-03-22 出版日期:2001-12-31 发布日期:2001-12-31
  • 作者简介:李吉晓(1972-),男,山东平度人,博士生;张冶文(1955-),男,浙江东诸人,教授,博导;夏钟福(1939-),男,安徽肥东人,教授,博导.
  • 基金资助:
    国家自然科学基金资助项目(59877019);教育部骨干教师计划资助项目

Distribution of Space Charges and Analysis of Trap Levels in Cross-linked Polyethylene

LI Ji-xiao1, ZHANG Ye-wen1,2, ZHENG Fei-hu1, WU Chang-shun2, XIA Zhong-fu1   

  1. 1. Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, China;
    2. China National Center for Quality Supervision and Test of Electric Wire and Cable, Shanghai 200093, China
  • Received:2001-01-18 Revised:2001-03-22 Online:2001-12-31 Published:2001-12-31

PDF

97

被引次数

13

摘要： 用PWP法与TSD法对交联聚乙烯中的空间电荷形成和演变过程进行了测量,两次TSD的测量结果有很大的不同,而在PWP法的测量结果中这种差别却并不明显,说明这两种方法的联合应用能更深入完全地反映空间电荷的实际情况.交联聚乙烯中空间电荷的形成包括注入电荷、杂质离子和小分子偶极子的转向,其中以小分子偶极子的转向为主,陷阱对电子的捕获能大幅度改变TSD电流信号的幅度,这些陷阱与交联聚乙烯中的小分子有关.

关键词: 陷阱, 交联聚乙烯, 空间电荷

Abstract: The formation and evaluation of space charge in cross-linked polyethylene have been studied by using Piezo-PWP and TSD methods. There is a large difference between two TSD curves, but little difference between two PWP curves. The results indicate that deeper understanding and more details can be gained by using both methods. Space charges in XLPE might be due to the injection charges, the impurity ions and the orientation of small molecules dipoles, which seems to be the major cause. The capture of electrons by traps can broaden the peak of TSD. The traps are related with the small molecules in XLPE.

Key words: space charge, trap, cross-linked polyethylene

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