河北师范大学学报—

期刊信息

刊名：河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
主办：河北师范大学
ISSN： 1000-5854
CN： 13-1061/N
中国科技核心期刊
中国期刊方阵入选期刊
中国高校优秀科技期刊
华北优秀期刊
河北省优秀科技期刊

协同采编系统

友情链接

空气中聚酰亚胺沿面闪络特性

周立栋¹

孙永卫¹

蒙志成¹

杨茂松¹

刘可欣²

1. 陆军工程大学国防科技重点实验室, 河北石家庄 050003;
2. 北京理工大学光电学院, 北京 100081
DOI： 10.13763/j.cnki.jhebnu.nse.2018.03.005

Surface Flashover Characteristics of Polyimide in Air

ZHOU Lidong¹, SUN Yongwei¹, MENG Zhicheng¹, YANG Maosong¹, LIU Kexin²

PDF
下载
HTML

摘要/Abstract

摘要：

由于聚酰亚胺（PI）具有良好的绝缘性、可塑性，因此PI作为一种特殊的工程材料被广泛应用于航天、航空.对不同间距的PI材料进行沿面闪络实验，得到PI闪络平均电压.实验发现：电极间距一定时，随着闪络放电次数的增加，闪络电压呈现先升高后降低最后趋于稳定的规律；放电次数一定时，闪络电压随电极间距的增大而增大.分析实验结果得出：PI样品表面粗糙的改变以及表面化学变化是造成上述规律的主要原因；样品表面粗糙程度越小闪络电压越低，闪络过程中C-O键含量的增加提高样品的亲水性，降低PI样品的绝缘性.

Abstract：

Polyimide (PI) is widely used in aerospace and aviation as a special engineering material,because of its good insulation and plasticity.In order to better understand the flashover characteristics of PI under normal pressure,in this paper,the surface flashover experiments of PI materials with different spacings are carried out,and the average voltage and voltage waveform of PI are obtained.The results show that when the electrode spacing is fixed,the discharge voltage increases first and then decreases with the increase of flashover discharge time,and finally tends to be stable.When the discharge time is constant,the flashover voltage increases with the increase of the electrode spacing.The phenomenon was thought to be due to the change of the surface roughness of the PI sample and the change of the surface chemistry.The smaller the surface roughness is,the lower the flashover voltage is.During the flashover process,the increasing number of the C-O bond enhances the hydrophilicity of the sample and reduces the insulation of the PI sample.

关键词

关键词： 聚酰亚胺 ; 沿面闪络 ; 平均电压 ; 表面粗糙 ; 化学变化

Key words： polyimide ; surface flashover ; average voltage ; surface roughness ; chemiacal change

参考文献 11

[1] 高鸿,王永建,邢焰.空间领域用高性能聚酰亚胺薄膜现状与发展[J].航天器环境工程,2014,31(3):248-250.doi:10.3969/j.issn.1673-1379.2014.03.003
[2] JAITLY N C,SUDARSHAN T S.DC Surface Flashover Mechanism a Long Solids in Vacuum Based on a Collision Ionization Model[J].J Appl Phys,1988,64(7):3411-3418.
[3] 赵超.低温下聚酰亚胺真空沿面闪络研究[D].北京:华北电力大学,2006:51-53.
[4] 姚红,张占文,黄勇,等.聚酰亚胺薄膜表面粗糙度的影响因素[J].强激光与离子束,2011,23(7):1862-1868.doi:10.3788/HPLPB20112307.1861
[5] 汤俊萍,邱爱慈,陈维青,等.真空中聚乙烯膜在纳秒脉冲电压下的沿面闪络特性[J].强激光与离子束,2003,15(10):1019-1022.
[6] NEUBER A,BUTCHER M,HATFIELD L L,et al.Electric Current in DC Surface Flashover in Vacuum[J].Journal of Applied Physics,1999,85(5):3084-3091.doi:10.1063/1.369647
[7] 王强,张贵新,王新新,等.直流电压下气固交界面表面电荷积聚现象的实验分析[J].高电压技术,2011,37(3):594-598.
[8] 郝致远,汲胜昌,宋莹.氩等离子体射流对聚四氟乙烯表面改性的研究[J].西安交通大学学报,2014,48(4):59-67.doi:10.7652/xjtuxb201404011
[9] CHALMERS I D,LEI J H,YANG B,et al.Surface Charging and Flashover on Insulators in Vacuum[J].IEEE Trans on Dielectrics and Electrical Insulation,1995,2(2):225-230.doi:10.1109/94.388244
[10] 梁峰,高巍,焦海东,等.真空绝缘沿面闪络特性实验研究现状[J].电气技术,2006,9(2):32-39.
[11] ZHANG Cheng,XU Jiayu,SHAO Tao,et al.Hydrophobic Modification of Polyethylene Terephthalate Using Nanosecond-pulse Dielectric Barrier Discharge[J].High Power Laser and Particle Beams,2014,26(4):147-152.doi:10.11884/HPLPB201426.045020