真空中电子辐照下聚四氟乙烯沿面闪络电压特性

范亚杰; 张希军; 孙永卫; 周立栋

doi:10.11884/HPLPB201830.180131

真空中电子辐照下聚四氟乙烯沿面闪络电压特性

doi: 10.11884/HPLPB201830.180131

陆军工程大学石家庄校区电磁环境效应国家级重点实验室, 石家庄 050003

基金项目:

装备预研基金项目重点实验室基金项目 61422050102162205001

装备预研基金项目 61402090201

详细信息

作者简介:
范亚杰(1994—)，男，硕士研究生，从事空间静电安全与防护研究；1015505729@qq.com

通讯作者:
张希军(1969—)，女，硕士，副教授，从事空间静电安全与防护研究；zxjlzy@126.com

中图分类号: V19;TM85
计量
- 文章访问数: 1184
- HTML全文浏览量: 252
- PDF下载量: 105
- 被引次数: 0
出版历程
- 收稿日期: 2018-05-07
- 修回日期: 2018-09-12
- 刊出日期: 2018-11-15

Surface flashover voltage characteristics of polytetrafluoroethylene under electron irradiation in vacuum

National Key Laboratory on Electromagnetic Environment Effects, Shijiazhuang Campus of Army Engineering University, Shijiazhuang 050003, China

摘要

摘要: 为了研究聚四氟乙烯材料(PTFE)在空间粒子环境中放电规律及其影响因素，通过实验获得了高真空低能电子辐照下PTFE高压直流沿面闪络电压，并采用等温电位衰减法测试了PTEE在辐照前及辐照后的陷阱密度，分析了影响PTEE沿面闪络电压的因素。研究结果表明：相比于无辐照时PTFE沿面闪络电压，当辐照电子能量为19~25 keV时，闪络电压明显更高；在电子束流密度不变的情况下，电子能量越高，材料表面正电荷密度越小，陷阱密度与电导率越大，电场畸形程度越小，因此闪络电压升高；当电子能量一定时，束流密度越高，初始电子数量和二次电子数量越多，因此闪络电压降低。
- 聚四氟乙烯 /
- 电子辐照 /
- 高压直流 /
- 沿面闪络 /
- 电子能量 /
- 束流密度
Abstract: Surface discharge effect of spacecraft insulating material in space irradiation environment is one of the main factors that threaten spacecraft safety. To investigate the pattern and influencing factors of the electrostatic discharge of polytetrafluoroethylene (PTFE) in complex ionization environment, the flashover voltage of PTFE under high voltage direct current (DC) in high vacuum and during low energy electron irradiation were experimentally obtained, the trap density before and after irradiation was tested by isothermal surface potential decay, and the influencing factors of flashover voltage were analyzed. The results show that the surface flashover voltage of PTFE under the irradiation with electron energy of 19~25keV is higher than that under no irradiation. Higher electron energy leads to smaller positive charge density on surface of PTFE and larger trap density, decreasing deformity of surface electric field, increasing the flashover voltage finally. On the condition that electron energy remains the same, the flashover voltage of PTFE would be lower with the increasing electron beam density, number of initial electrons and number of secondary electrons.
- polytetrafluoroethylene /
- electron irradiation /
- high voltage direct current /
- flashover /
- electron energy /
- electron beam density

HTML全文

图 1 实验系统示意图

Figure 1. Diagram of experimental system

下载: 全尺寸图片幻灯片

图 2 不同电子能量下PTFE闪络电压

Figure 2. Diagram of the flashover voltage of PTFE under different electron energies

下载: 全尺寸图片幻灯片

图 3 不同电子能量辐照下表面电位随时间变化

Figure 3. Diagram of the charge decay with time under different electron energy irradiation

下载: 全尺寸图片幻灯片

图 4 不同束流密度下PTFE闪络电压

Figure 4. Diagram of the flashover voltage of PTFE under different beam densities

下载: 全尺寸图片幻灯片

图 5 介质表面电荷衰减模型

Figure 5. Dielectric surface charge decay model

下载: 全尺寸图片幻灯片

图 6 不同电子能量下陷阱密度

Figure 6. Diagram of trap density under different electron energies

下载: 全尺寸图片幻灯片

图 7 辐射后附加电场示意图

Figure 7. Diagram of additional electric field after irradiation

下载: 全尺寸图片幻灯片

参考文献(23)

[1]	Silverman E. Spacecraft environmental effects on spacecraft: LEO materials Selection Guide[R]. NASA-CR-4661-PT-1996.
[2]	张振军, 苗军, 王学强, 等. 改性聚酰亚胺的真空直流沿面闪络特性[J]. 西安交通大学学报, 2013, 47(4): 51-56. https://www.cnki.com.cn/Article/CJFDTOTAL-XAJT201304009.htm Zhang Zhenjun, Miao Jun, Wang Xueqiang, et al. Surface flashover characteristics of modified polyimide under DC voltage in vacuum. Journal of Xi'an Jiaotong University, 2013, 47(4): 14-19 https://www.cnki.com.cn/Article/CJFDTOTAL-XAJT201304009.htm
[3]	郑晓泉, 王立, 秦小刚. 空间环境下介质材料的可靠性与寿命的地面评价方法[J]. 绝缘材料, 2006, 39(2): 24-25. doi: 10.3969/j.issn.1009-9239.2006.02.008 Zheng Xiaoquan, Wang Li, Qin Xiaogang. Study on evaluation method of dielectric reliability and working life in space environment. Insulation Materials, 2006, 39 (2): 24-25 doi: 10.3969/j.issn.1009-9239.2006.02.008
[4]	李盛涛, 李国倡. 空间介质充放电研究现状及展望[J]. 科学通报, 2017, 62(10): 990-993. https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB201710005.htm Li Shengtao, Li Guochang. Dielectric charging research status and prospect. Chinese Science Bulletin, 2017, 62(10): 990-993 https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB201710005.htm
[5]	张振军, 苗军, 王学强, 等. 真空、直流电压的电子辐照环境中聚酰亚胺材料的沿面闪络特性[J]. 高电压技术, 2014, 40(1): 117-123. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201401017.htm Zhang Zhenjun, Miao Jun, Wang Xueqiang, et al. Surface flashover characteristics of polyimide materials during electron beam irradiation under DC voltage in vacuum. High Voltage Engineering, 2014, 40 (1): 117-123 https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201401017.htm
[6]	高巍, 孙广生, 严萍. 高真空条件下绝缘闪络机理研究的描述[J]. 高电压技术, 2005, 31(1): 1-4. doi: 10.3969/j.issn.1003-6520.2005.01.001 Gao Wei, Sun Guangsheng, Yan Ping. Review of flashover mechanism in high vacuum. High Voltage Engineering, 2005, 31(1): 1-4 doi: 10.3969/j.issn.1003-6520.2005.01.001
[7]	张冠军, 赵文彬, 郑楠, 等. 真空中固体绝缘沿面闪络现象的研究进展[J]. 高电压技术, 2007, 33(7): 30-35. doi: 10.3969/j.issn.1003-6520.2007.07.007 Zhang Guanjun, Zhao Wenbin, Zheng Nan, et al. Research progress on surface flashover phenomena across solid insulation in vacuum. High Voltage Engineering, 2007, 33(7): 30-35 doi: 10.3969/j.issn.1003-6520.2007.07.007
[8]	Simmons J G, Tam M C. Theory of isothermal currents and direct determination of trap parameters in semiconductors and insulators containing arbitrary trap distributions[J]. Physical Review B, 1973, 7(8): 3706-3713. doi: 10.1103/PhysRevB.7.3706
[9]	李枕, 黄印, 闵道敏, 等. 环氧基碳纳米管纳米电介质的直流真空沿面闪络特性[J]. 高电压技术, 2017, 43(9): 2859-2861. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201709012.htm Li Zhen, Huang Yin, Min Daomin, et al. Surface flashover characteristic of EP/MWCNTS in vacuum under DC voltage. High Voltage Engineering, 2017, 43 (9): 3706-3713 https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201709012.htm
[10]	Li J Y, Zhou F S, Min D M, et al. The energy distribution of trapped charges in polymers based on isothermal surface potential decay model[J]. IEEE Trans Dielectrics and Electrical Insulation, 2015, 22(3): 1723-1732. doi: 10.1109/TDEI.2015.7116370
[11]	欧阳本红, 赵健康, 周福生, 等. 基于等温表面电位衰减法的直流电缆用低密度聚乙烯和交联聚乙烯陷阱电荷分布特性[J]. 高电压技术, 2015, 41(8): 2689-2696. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201508023.htm Ouyang Benhong, Zhao Jiankang, Zhou Fusheng, et al. Characteristics of trapped charge distribution in LDPE and XLPE used in DC cables based on isothermal surface potential decay method. High Voltage Engineering, 2015, 41(8) 2689-2696 https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201508023.htm
[12]	Anderson R A, Brainard J P. Mechanism of pulsed surface flashover involving electron-stimulated desorption[J]. Journal of Applied Physics, 1980, 51(3): 1414-1421. doi: 10.1063/1.327839
[13]	Panitz J A. Preflashover phenomena and electron-stimulated desorption in high electric fields[J]. Journal of Applied Physics, 1974, 45(3): 1112-1114.
[14]	Pillai A S, Hackam R. Surface flashover of solid dielectric in vacuum[J]. Journal of Applied Physics, 1982, 53(4): 2983-2987.
[15]	Sun Zelai. Research on flashover mechanism of secondary electron emission under nanosecond pulse in vacuum. Beijing: North China Electric Power University, 2016: 61-63
[16]	全荣辉, 韩建伟, 黄建国, 等. 电介质材料辐射感应电导率的模型研究[J]. 物理学报, 2007, 56(11): 6642-6644. https://www.cnki.com.cn/Article/CJFDTOTAL-WLXB200711081.htm Quan Ronghui, Han Jianwei, Huang Jianguo, et al. Modeling analysis of radiation induced conductivity in electrical insulator. Acta Physica Sinica, 2007, 56 (11): 6642-6644 https://www.cnki.com.cn/Article/CJFDTOTAL-WLXB200711081.htm
[17]	Du Boxue, Li Jin, Du Qiang. Surface charge and flashover voltage of EVA/CB nanocomposite under mechanical stresses[J]. IEEE Trans Dielectrics and Electrical Insulation, 2016, 23(6): 3734-3741.
[18]	Li Feng, Jiang Jihao, Xu Le, et al. Investigation on surface flashover characteristics of the insulator with different transformer oil coating conditions in vacuum[C]//27^th International Symposium on Discharges and Electrical Insulation in Vacuum. 2016: 1-4.
[19]	Her E K, KoT J, Shin B, et al. Superhydrophobic transparent surface of nanostructured poly(methyl methacrylate) enhanced by a hydrolysis reaction[J]. Plasma Process Polym, 2013(10): 481-488.
[20]	Tataroglu A, Altindal S. The effect of frequency and r-irradiation on the dielectric properties of MIS type Schottky diodes[J]. Nuclear Instruments and Methods in Physics Research, 2007, 254: 113-117.
[21]	Gross B, Sessler G M, West J E. Charge dynamics for electron-irradiated polymer-foil electrets[J]. Journal of Applied Physics, 1974, 45(7): 113-117.
[22]	SorensenJ. Engineering tools for internal charging[R]. DERA/CIS/CIS2 CR000277, 2000.
[23]	Gary E W. Vacuum surface flashover: A high-pressure phenomenon[J]. Journal of Applied Physics, 1985, 58(1): 132-141.