| 交联聚乙烯中空间电荷分布及其机理研究 |
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| 引用本文： | 李吉晓,张冶文,等.交联聚乙烯中空间电荷分布及其机理研究[J].应用科学学报,2001,19(4):283-287. |
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| 作者姓名： | 李吉晓 张冶文 |
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| 作者单位： | [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 |
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| 基金项目： | 国家自然科学基金资助项目 ( 5 98770 19)，教育部骨干教师计划资助项目 |
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| 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。
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| 关 键 词： | 交联聚乙烯 空间电荷 陷阱 TSD法 测量 PWP法 高压输电绝缘材料 电荷分布 |
Distribution of Space Charges and Analysis of Trap Levels in Cross-linked Polyethylene |
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| LI Ji-xiao ,ZHANG Ye-wen ,ZHENG Fei-hu ,WU Chang-shun ,XIA Zhong-fu.Distribution of Space Charges and Analysis of Trap Levels in Cross-linked Polyethylene[J].Journal of Applied Sciences,2001,19(4):283-287. |
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| Authors: | LI Ji-xiao ZHANG Ye-wen ZHENG Fei-hu WU Chang-shun XIA Zhong-fu |
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| Institution: | LI Ji-xiao 1,ZHANG Ye-wen 1,2,ZHENG Fei-hu 1,WU Chang-shun 2,XIA Zhong-fu 1 |
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| 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. |
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| Keywords: | cross-linked polyethylene space charge trap |
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