PMI泡沫材料在航天器结构中应用的可行性研究  

Feasibility research of PMI foam in spacecraft structure

作　　者：马立 刘芃[2] 胡培 

机构地区：[1]北京卫星制造厂,北京100190 [2]北京空间飞行器总体设计部,北京100094 [3]赢创德固赛(中国)投资有限公司上海分公司,上海201108

出　　处：《航天器环境工程》2010年第2期164-168,131,共5页Spacecraft Environment Engineering

基　　金：自主研发基金资助项目

摘　　要：文章通过试验研究了两个牌号的PMI泡沫材料的物理及力学性能,着重研究了它们的吸湿性能、压缩蠕变率及在热真空环境下的放气性能,并与航天器结构常用的铝蜂窝芯材作了相应比较。研究表明,优良的介电性能、低热导率、易于加工复杂外形、可设计性等特性使得PMI泡沫材料有望应用于航天器的多功能结构,变截面结构,杆、梁结构,天线结构等,而PMI泡沫材料采取一定的增强措施后也可作为航天器的承力结构。The performance of two types of PMI foam is studied by tests,including physical,mechanical properties,moisture absorption,compressive creep and outgassing in thermal vacuum environment.A comparison between foam core and aluminum core is made.Advantages and disadvantages of PMI foam in space structures are analyzed.With its advantages,such as,good dielectric performance,low thermal conductivity,and machinability,PMI foam can be applied in the structures of spacecraft,including multi-functional structure,variable-section structure,rod & beam,and antenna,etc.After being properly reinforced,PMI foam can be used for the primary structure or the secondary structure of spacecraft.

关 键 词：泡沫材料 聚甲基丙烯酰亚胺 夹层结构 材料性能 

分 类 号：TB303[一般工业技术—材料科学与工程]