摘要
聚合物材料具有质量轻、强度高等优点,常被用作航天器表面的复合结构基材。原子氧是低地球轨道空间中成分含量最高的粒子之一,对暴露在航天器表面的聚合物材料易形成大通量、高能量轰击,造成其表面氧化侵蚀和质量损失,使聚合物材料的性能发生不同程度的衰退,也是导致航天器件可靠性降低、工作寿命缩短的主要环境因素。本文对当前国内外通用的几种聚合物材料表面原子氧防护技术进行了整理归纳,其中表面化学改性方法结合了体材改性和常用防护涂层的优点,得到的有机/无机复合改性防护层具有较好的综合防护性能。文中分析了近年来由计算模拟法开展原子氧与表面防护材料相关作用机理的研究,指出采用计算模拟结合试验的研究方法,有可能从本质上揭示复合改性层与原子氧的作用机理,从而促进原子氧防护材料与防护技术的研究发展。
Polymers,as substrate of composite material on the surface of spacecraft,have such advantages as light mass and high strength.Atomic oxygen (AO) is one of the highest content particles of low earth orbit,and high-energy high-flux AO bombardment causes the polymers’ surface erosion and mass loss at different degree,resulting in polymers degradation.Thus,AO is one of major threats in space environment that reduces reliability of space devices and shortens their working life span.This review summarized current global protection technologies from AO in recent years.Among them,surface chemical modification method with advantages of body-modification and protection coating,provided organic/inorganic composite with modified layer through comprehensive protection performance.This review discussed the method to explore mechanism of the AO protection reaction by computational simulation.Computational simulation combined with experiments may reveal nature of the protection,facilitate future researches on AO protection,and provide guidance for fabrication surface polymer materials used in domestic parts of the aerospace craft,especially the large-scale flexible space solar cell array.
作者
李昊耕
谷红宇
章俞之
宋力昕
吴岭南
齐振一
张涛
LI Hao-Geng;GU Hong-Yu;ZHANG Yu-Zhi;SONG Li-Xin;WU Ling-Nan;QI Zhen-Yi;ZHANG Tao(Key Laboratory of Inorganic Coatings Materials CAS,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2019年第7期685-693,共9页
Journal of Inorganic Materials
基金
“十三五”装备预研项目(170441422174)
国家自然科学基金青年项目(51802332)
上海市青年科技英才扬帆计划项目(18YF1427100)
上海硅酸盐研究所创新项目(Y85ZC2120G,Y75ZC2120G)~~
关键词
原子氧
聚合物
空间防护
表面改性
聚酰亚胺
计算模拟
综述
atomic oxygen
polymer
space protection
surface modification
polyimide
computational simulation
review
