航天器环境工程2026，Vol.43Issue(4)：313-322,10.DOI:10.12126/see.2026058
电子辐照条件下聚四氟乙烯放电特征研究
Discharge characteristics of polytetrafluoroethylene under electron irradiation
摘要
Abstract
To investigate the classification characteristics of electron irradiation-induced dielectric discharge,electron irradiation experiments were conducted on back-electrode-grounded polytetrafluoroethylene(PTFE)samples with different thicknesses and areas.The discharge current was monitored,and the light emission during discharge was observed by video recording.A total of 845 discharge events were recorded.A classification method for PTFE discharge signals was established,and the variations in discharge type and characteristic parameters under different experimental conditions were analyzed.The results showed that the PTFE discharge current could be classified into three types:pulse-type,oscillatory-type,and composite-type.The three types of discharge signals differed significantly in peak current,discharge duration,dominant frequency,and light emission morphology.Sample thickness,effective irradiated area,and electron energy all affected the composition of discharge types and the characteristic parameters.These results may provide a reference for the discharge risk analysis and targeted protection design of dielectric materials for spacecraft.关键词
聚四氟乙烯/电子辐照/介质充放电/放电信号分类/放电特征/试验研究Key words
polytetrafluoroethylene(PTFE)/electron irradiation/dielectric charging and discharging/discharge signal classification/discharge characteristics/experimental study分类
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管元巍,李宏伟,韩建伟,朱翔,陶孟泽,徐振宇,陈睿..电子辐照条件下聚四氟乙烯放电特征研究[J].航天器环境工程,2026,43(4):313-322,10.基金项目
中国科学院基础与交叉前沿科研先导专项(编号:XDB1200200) （编号:XDB1200200）
中国科学院重点部署项目(编号:KGFZD-145-25-19) （编号:KGFZD-145-25-19）
国家自然科学基金资助项目(编号:12275303) （编号:12275303）
