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5229D/T700导电环氧复合材料空间环境适应性研究
张静静1, 孙明1, 汪洋1, 高鸿1, 杜宇2
1.中国空间技术研究院, 北京 100094;2.中航复合材料有限责任公司, 北京 101300
摘要:
对5229D/T700导电环氧复合材料力学、电学、耐热特性进行了系统表征,通过真空出气、温度循环和总剂量辐照等环境试验考察了5229D/T700导电环氧复合材料空间环境适应性。结果表明,5229D/T700导电环氧复合材料Tg为236℃,150℃弯曲强度保持率为85%,150℃真空总质损为0.44%,可凝挥发物为0.05%,具有很好耐热性和极低的真空污染特性。同时发现5229D/T700导电环氧复合材料力学性能几乎不受温度循环和总剂量辐照的影响,而电性能在总剂量辐照试验后略有增加,表现出非常优异空间环境适应性。
关键词:  导电复合材料  航天器  空间适应性  温度循环  粒子辐照
DOI:10.12044/j.issn.1007-2330.2018.05.010
分类号:V45
基金项目:“十三五”科工局技术基础科研项目(JSZL2016203C005)
Space Environmental Suitability of 5229D/T700 Conductive Epoxy Composites
ZHANG Jingjing1, SUN Ming1, WANG Yang1, GAO Hong1, DU Yu2
1.China Academy of Space Technology, Beijing 100094;2.AVIC Composite corporation ltd, Beijing 101300
Abstract:
The mechanical, electrical and heat resistant properties of 5229D/T700 conductive epoxy composites were systematically characterized. At the same time, the space environmental suitability of 5229D/T700 conductive epoxy composites was investigated by thermal vacuum outgassing test, thermal cycling test and total dose radiation test. The results show that the 5229D/T700 conductive epoxy composites has excellent heat resistance (Tg is 236℃, flexural strength retention is 85% at 150℃) and very low pollution (TML is 0.44%, CVCM is 0.05% at 150℃). It is also observed that the mechanical properties of conductive epoxy composites are hardly affected by thermal cycling and total dose radiation, while the electrical properties are slightly increased after total dose radiation, showing excellent space environmental suitability.
Key words:  Conductive composites  Spacecraft  Space environment durability  Thermal cycling  Particle irradiation