结合电子束辐照与压电压力波法空间电荷分布实时测量的空间电荷包迁移行为的研究

潘佳萍; 张冶文; 李俊; 吕天华; 郑飞虎

doi:10.7498/aps.73.20231353

摘要

空间电荷包现象是一种特殊的空间电荷现象, 具体表现为空间电荷以包的形态沿着极化电场的方向进行迁移. 目前针对空间电荷包现象的研究还存在一些不足, 研究的对象通常集中在聚乙烯及其交联产物中的正极性空间电荷包. 本文提出了一套用于负极性空间电荷包特性研究的一体化实验系统, 可进行电子束辐照与压电压力波法空间电荷分布实时测量相结合的实验研究, 并简要介绍了该系统的结构与功能. 该系统适用于不同厚度范围的各类绝缘电介质样品在不同电场下的实验研究. 本文使用该实验系统初步研究了在不同外加电场(15, 20, 25, 30 kV/mm)下聚丙烯与聚甲基丙烯酸甲酯样品内负极性空间电荷包的迁移行为, 并从实验结果中提取了负极性载流子(电子)的迁移特性. 聚丙烯与聚甲基丙烯酸甲酯样品中电子的迁移速率均存在随着电场的增加而减小的负微分迁移率现象, 聚丙烯中该现象出现的阈值电场约为26.0 kV/mm, 聚甲基丙烯酸甲酯中该现象出现的阈值电场约为19.5 kV/mm, 消失的截止电场约为27.5 kV/mm.

关键词:

Abstract

The space charge packet is a special sort of space charge phenomenon that is characterized by the migration of aggregated space charge in the form of a packet in the sample. Currently, most of the experimental and simulation studies on the generation and migration of space charge packets focus on the space charge packets with positive polarity in polyethylene and their cross-linking products, while the characteristics of the space charge packets with negative polarity still need studying. This paper presents an integrated experimental system for studying space charge packet with negative polarity, which enables experimental studies combining electron beam irradiation technique and real-time space charge distribution measurement. The beam flux for electron beam irradiation is controlled by a metal grid with an optical fiber-electric relay, and the space charge distribution measurement is performed by the piezo- pressure wave propagation method. The system achieves a withstand voltage value of 17 kV and a measuring resolution of 25 ns for space charge distribution measurement and is suitable for experimental studies of various material samples with different thickness ranges under different electric fields. In this work, the migration behaviors of space charge packets with negative polarity in polypropylene (PP) and polymethyl methacrylate (PMMA) samples under different applied electric fields (15, 20, 25, 30 kV/mm) are studied by using the experimental system. The relationship between the migration properties of carriers with negative polarity (electrons) and the electric field can be extracted from the experimental results. The “negative differential mobility” phenomenon is found for both materials, i.e. the migration rate decreases with the increase of the electric field. The threshold electric field for the “negative differential mobility” phenomenon of electrons in PP sample is about 26.0 kV/mm while the threshold electric field for the “negative differential mobility” phenomenon of electrons in PMMA sample is 19.5 kV/mm, and the phenomenon disappears at an electric field of 27.5 kV/mm. The electric field where the "negative differential mobility" phenomenon of electrons appears and disappears in different materials can be extracted by using the experimental system proposed in this paper.

Keywords:

作者及机构信息

同济大学电子与信息工程学院, 上海　201804

通信作者: 张冶文, yewen.zhang@tongji.edu.cn

基金项目: 国家自然科学基金 (批准号: 51877153)资助的课题.

Authors and contacts

Department of Electrical Engineering, Tongji University, Shanghai 201804, China

Corresponding author: Zhang Ye-Wen, yewen.zhang@tongji.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 51877153).

文章全文 : translate this paragraph

参考文献

[1]	杜伯学, 韩晨磊, 李进, 李忠磊 2019 电工技术学报 34 179 Google Scholar Du B X, Han C L, Li J, Li Z L 2019 Trans. Chin. Electrotech. Soc. 34 179 Google Scholar
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[3]	Zhang Y W, Lewiner J 1996 IEEE Trans. Dielectr. Electr. Insul. 3 778 Google Scholar
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[5]	Matsui K, Tanaka Y, Takada T, Fukao T, Fukunaga K, Maeno T, Alison J M 2005 IEEE Trans. Dielectr. Electr. Insul. 12 406 Google Scholar
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施引文献

图 1 电子束辐照系统的结构示意图与实物图　(a) 结构示意图; (b) 实物图

Fig. 1. Schematic diagram and actual photo of the electron beam irradiation system: (a) Structure diagram; (b) actual photo.

下载: 全尺寸图片幻灯片

图 2 金属栅极调控下的电子束束流量

Fig. 2. Electron beam flux controlled by metal grid.

下载: 全尺寸图片幻灯片

图 3 压电压力波法测量装置的结构示意图

Fig. 3. Schematic diagram of the piezo-PWP method measurement device.

下载: 全尺寸图片幻灯片

图 4 相同辐照条件下不同聚丙烯样品内的初始空间电荷分布(撤压信号)

Fig. 4. Space charge distribution in different PP samples under the same irradiation conditions (without applied voltage).

下载: 全尺寸图片幻灯片

图 5 不同外加电场下聚丙烯样品内部的空间电荷分布　(a) 15 kV/mm; (b) 20 kV/mm; (c) 25 kV/mm; (d) 30 kV/mm

Fig. 5. Space charge distribution inside PP samples under different applied electric fields: (a) 15 kV/mm; (b) 20 kV/mm; (c) 25 kV/mm; (d) 30 kV/mm.

下载: 全尺寸图片幻灯片

图 6 不同外加电场下聚丙烯样品内部的局部电场分布　(a) 15 kV/mm; (b) 20 kV/mm; (c) 25 kV/mm; (d) 30 kV/mm

Fig. 6. Electric field distribution inside PP samples under different applied electric fields: (a) 15 kV/mm; (b) 20 kV/mm; (c) 25 kV/mm; (d) 30 kV/mm.

下载: 全尺寸图片幻灯片

图 7 聚丙烯样品内电子的迁移速率与局部电场的关系

Fig. 7. Migration rate of electrons as a function of the local electric field inside PP samples.

下载: 全尺寸图片幻灯片

图 8 聚甲基丙烯酸甲酯样品内电子的迁移速率与局部电场的关系

Fig. 8. Migration rate of electrons as a function of the local electric field inside PMMA samples.

下载: 全尺寸图片幻灯片

[1]	杜伯学, 韩晨磊, 李进, 李忠磊 2019 电工技术学报 34 179 Google Scholar Du B X, Han C L, Li J, Li Z L 2019 Trans. Chin. Electrotech. Soc. 34 179 Google Scholar
[2]	屠德民, 王霞, 吕泽鹏, 吴锴, 彭宗仁 2012 物理学报 61 017104 Google Scholar Tu D M, Wang X, Lü Z P, Wu K, Peng Z R 2012 Acta Phys. Sin. 61 017104 Google Scholar
[3]	Zhang Y W, Lewiner J 1996 IEEE Trans. Dielectr. Electr. Insul. 3 778 Google Scholar
[4]	Hozumi N, Suzuki H 1994 IEEE Trans. Dielectr. Electr. Insul. 1 1068 Google Scholar
[5]	Matsui K, Tanaka Y, Takada T, Fukao T, Fukunaga K, Maeno T, Alison J M 2005 IEEE Trans. Dielectr. Electr. Insul. 12 406 Google Scholar
[6]	夏俊峰, 张冶文, 郑飞虎, 雷清泉 2009 物理学报 58 8529 Google Scholar Xia J F, Zhang Y W, Zheng F H, Lei Q Q 2009 Acta Phys. Sin. 58 8529 Google Scholar
[7]	Zheng F H, Zhang Y W, Gong B, Zhu J W, Wu C S 2005 Sci. China Ser. E: Technol. Sci. 48 354 Google Scholar
[8]	Kon H, Suzuoki Y, Mizutani T, Ieda M, Yoshifuji N 1996 IEEE Trans. Dielectr. Electr. Insul. 3 380 Google Scholar
[9]	Hozumi N, Takeda T, Suzuki H, Okamoto T 1998 IEEE Trans. Dielectr. Electr. Insul. 5 82 Google Scholar
[10]	Fabiani D, Montanari G, Dissado L, Laurent C, Teyssedre G 2009 IEEE Trans. Dielectr. Electr. Insul. 16 241 Google Scholar
[11]	Zhao J, Chen G, Lewin P L 2012 J. Appl. Phys. 112 034116 Google Scholar
[12]	夏俊峰, 张冶文, 郑飞虎, 雷清泉 2010 物理学报 59 508 Google Scholar Xia J F, Zhang Y W, Zheng F H, Lei Q Q 2010 Acta Phys. Sin. 59 508 Google Scholar
[13]	Xia J F, Zhang Y W, Zheng F H, An Z L, Lei Q Q 2011 J. Appl. Phys. 109 034101 Google Scholar
[14]	张冶文, 赵晖, 郭世忠, 郑飞虎, 安振连 2016 电工技术学报 31 145 Google Scholar Zhang Y W, Zhao H, Guo Sh Z, Zheng F H, An Z L 2016 Trans. Chin. Electrotech. Soc. 31 145 Google Scholar
[15]	金维芳 1997 电介质物理学 (北京: 机械工业出版社) 第116页 Jin W F 1997 Dielectric Physics (Beijing: China Machine Press) p116
[16]	郑飞虎, 张冶文, 吴长顺, 李吉晓, 夏钟福 2003 物理学报 52 1137 Google Scholar Zheng F H, Zhang Y W, Wu C S, Li J X, Xia Z F 2003 Acta Phys. Sin. 52 1137 Google Scholar
[17]	Weber K H 1963 Nucl. Instrum. Methods 25 261 Google Scholar
[18]	Ieda M 1984 IEEE Trans. Electr. Insul. EI-19 162 Google Scholar
[19]	夏钟福 2001 驻极体 (北京: 科学出版社) 第199—206页 Xia Z F 2001 Electret (Beijing: China Science Press) pp199–206
[20]	Jones J P, Llewellyn J P, Lewis T J 2005 IEEE Trans. Dielectr. Electr. Insul. 12 951 Google Scholar
[21]	Chen G, Zhao J 2011 J. Phys. D: Appl. Phys. 44 212001 Google Scholar

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结合电子束辐照与压电压力波法空间电荷分布实时测量的空间电荷包迁移行为的研究