航天器用聚酰亚胺薄膜的灭菌适用性研究  

Study of sterilization applicability of polyimide films used in spacecraft

作　　者：童曈 袁俊霞 温博 徐侃彦 党磊 印红 TONG Tong;YUAN Junxia;WEN Bo;XU Kanyan;DANG Lei;YIN Hong(Shenzhou Space Biotechnology Group;China Space Biology R&D Center,China Aerospace Science&Technology Corporation Ltd.,Beijing 100086,China;Beijing Institute of Space System Engineering,Beijing 100094,China)

机构地区：[1]航天神舟生物科技集团有限公司 [2]中国航天科技集团有限公司空间生物工程研究中心,北京100086 [3]北京空间飞行器总体设计部,北京100094

出　　处：《航天器环境工程》2024年第6期728-734,共7页Spacecraft Environment Engineering

基　　金：“天问三号”关键技术攻关项目;载人空间站工程空间科学与应用项目(编号:SCP03-01-06);国家国防科工局“十三五”对外技术合作科研项目;空间站工程航天技术试验领域项目(编号:2019HJS002)。

摘　　要：在地面对航天器硬件进行灭菌处理是深空探测行星保护任务的重要一环。文章针对干热灭菌和过氧化氢低温等离子体灭菌进行灭菌效率验证,并对航天器用聚酰亚胺薄膜PI100、GSI025进行灭菌后力学、电学性能测试,开展灭菌适用性评价。结果表明:两种灭菌方法对聚酰亚胺PI100的拉伸强度、断裂伸长率无显著影响;135℃干热灭菌处理后PI100的击穿强度比对照组的有显著提高;两种灭菌方法对GSI025的表面电阻率均无显著影响。研究结果可为航天器用聚酰亚胺材料的灭菌方法选择提供参考。Sterilization of spacecraft hardware on Earth is a critical step in deep space planetary protection missions.This paper verified the efficacy of two sterilization methods,dry heat sterilization and hydrogen peroxide low-temperature plasma sterilization,on polyimide films commonly used in spacecraft construction.Specifically,the post-sterilization mechanical and electrical properties,and the applicability in sterilized conditions,of PI100 and GSI025 polyimide films were evaluated.The results indicate that both sterilization methods have no significant effect on the tensile strength and elongation at break of PI100.Notably,the breakdown strength of PI100 following 135℃dry heat sterilization is significantly higher than that of the untreated control group.Additionally,the surface resistivity of GSI025 remains largely unaffected by either sterilization method.This study provides a valuable reference for the selection of appropriate sterilization methods for polyimide films intended for use in spacecraft.

关 键 词：行星保护 干热灭菌 过氧化氢低温等离子体灭菌 聚酰亚胺薄膜 

分 类 号：V419.6[航空宇航科学与技术—航空宇航推进理论与工程]