航天器环境工程2025，Vol.42Issue(2)：208-213,6.DOI:10.12126/see.2024112
聚四氟乙烯和环氧树脂玻璃纤维板的低气压沿面闪络行为研究
Flashover behavior of polytetrafluoroethylene and epoxy fiberglass board under low pressure
琚丹丹 1李飞 2王豪 1孙承月 1李航 1吴宜勇 1王学强 2李伟 2经贵如2
作者信息
- 1. 哈尔滨工业大学空间环境与物质作用全国重点实验室,哈尔滨 150001
- 2. 上海宇航系统工程研究所,上海 201109
- 折叠
摘要
Abstract
Polytetrafluoroethylene(PTFE)and epoxy fiberglass board(a common PCB substrate material)are two commonly used insulating materials in spacecraft.Addressing the issue of insulation failure due to surface flashover in these materials under low pressure conditions,the influence of low gas pressure and electrode spacing on the flashover discharge threshold was investigated through experiments in this paper.The results show that when the gas pressure is below 0.1 Pa,the flashover voltages of PTFE and the epoxy fiberglass board are approximately 40 kV and 28 kV,respectively.Within the pressure range of 0.1 Pa to 1 Pa,the flashover voltages of both materials decrease rapidly as the pressure increases.When the gas pressure exceeds 1 Pa and rise until 100 Pa,the flashover voltages of both the materials decrease to approximately 600 V and 1000 V,respectively,thus significantly increasing the discharge risk.This study reveals the flashover behavior of insulating materials at low-pressures,providing insights for optimizing the design and application of spacecraft and space device insulation materials to enhancing their performance against flashover risk.关键词
聚四氟乙烯/环氧树脂玻璃纤维板/沿面闪络/电极间距/闪络电压Key words
polytetrafluoroethylene(PTFE)/epoxy fiberglass board/surface flashover/electrode spacing/flashover voltage分类
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琚丹丹,李飞,王豪,孙承月,李航,吴宜勇,王学强,李伟,经贵如..聚四氟乙烯和环氧树脂玻璃纤维板的低气压沿面闪络行为研究[J].航天器环境工程,2025,42(2):208-213,6.
