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静电电磁脉冲场诱发聚四氟乙烯材料表面闪络实验

张岩1,张路1,刘尚合2,胡小锋2,钱禹行1,张建平3   

  1. 1. 河北科技大学
    2. 军械工程学院
    3. 陆军工程大学
  • 收稿日期:2020-12-18 修回日期:2021-10-20 出版日期:2021-10-21 发布日期:2021-10-21
  • 通讯作者: 刘尚合
  • 基金资助:
    装备预研究重点基金项目;国家自然科学基金项目;河北省自然科学基金

Electrostatic electromagnetic pulse field induced surface flashover experiment of PTFE material

  • Received:2020-12-18 Revised:2021-10-20 Online:2021-10-21 Published:2021-10-21

摘要: 为了解自然环境下静电电磁脉冲辐射场诱发绝缘材料闪络的基本特性,进一步分析诱发闪络的特征规律,建立了大气条件下静电电磁脉冲场诱发聚四氟乙烯表面闪络的实验系统。主要采取实验验证、理论分析的方式,对静电场诱发材料表面针-板电极结构闪络的基本规律进行探索,初步得出了诱发闪络的基本规律。研究结果表明:在外界条件不变的情况下,随着静电电磁脉冲辐射场场强的增大,诱发闪络的概率增大;在静电电磁脉冲辐射场场强一定的情况下,能够确定该条件下诱发闪络的电压阈值,且随着针-板电极间电压的升高,诱发闪络的概率增大。这些实验规律的取得,对低轨环境下强电磁脉冲诱发绝缘材料闪络的研究提供了指导方法并具有借鉴意义。

关键词: 聚四氟乙烯, 电磁诱发, 沿面闪络, 静电放电, 静电电磁脉冲

Abstract: In order to understand the basic characteristics of the flashover on insulating materials induced by the electrostatic electromagnetic pulse radiation field in the natural environment, and further analyze the characteristics of the induced flashover, an experimental system for surface flashover of PTFE induced by electrostatic electromagnetic pulse field under atmospheric conditions was established. It mainly adopts the methods of experimental verification and theoretical analysis to explore the basic law of the electrostatic field inducing the flashover of the needle-plate electrode structure on the PTFE material surface, and the basic law of inducing flashover is initially obtained. The research results show that under the condition of unchanged external conditions, the probability of inducing flashover increases with the increase of the field strength of the electrostatic electromagnetic pulse radiation field, when the field strength of the electrostatic electromagnetic pulse radiation field is constant, the voltage threshold for inducing flashover can be determined under this condition, and with the increase of the voltage between the needle-plate electrodes, the probability of inducing flashover increases. The acquisition of these experimental rules provides a guiding method and a reference for the study of the flashover on insulating materials induced by strong electromagnetic pulses in low-orbit environments.

Key words: PTFE, electromagnetic induction, surface flashover, electrostatic discharge, electrostatic electromagnetic pulse

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