摘要
文章简要介绍了航天器常用导电胶粘剂的成分和功能原理,研究了MD-140导电胶粘剂的基本性能以及经过温度循环试验、粒子辐照试验后其力学性能、导热性能和导电性能的变化情况。从导电胶粘剂内部结构角度出发,对其性能的环境退化机理进行分析探讨。结果表明:高低温循环试验后,导电胶的黏结性能变强,导电性能变差,导热性能变化不显著;粒子辐照试验后,导电胶的黏结性能和导电性能变差,导热性能变化不显著。
This paper discusses the composition and the functions of conductive adhesives used in spacecraft. The basic properties of the MD-140 conductive adhesive and the changes of its mechanical, thermal, and electrical properties after thermal-cycling and particle irradiation tests are studied. Based on the internal structure of the conductive adhesive, its environmental degradation mechanism is discussed. The results show that after the thermal-cycling test, the mechanical property is improved, the electrical property is weakened, the change of the thermal property is not remarkable; after the particle irradiation test, both of the mechanical and electrical properties are weakened, the change of the thermal property is not remarkable.
出处
《航天器环境工程》
2015年第4期404-407,共4页
Spacecraft Environment Engineering
基金
"十二五"星箭可靠性增长及产品化推进工程"航天器用胶粘剂黏结可靠性增长"项目
关键词
导电胶粘剂
剪切强度
体积电阻率
导热系数
热循环
粒子辐照
conductive adhesive
shear strength
volume resistivity
thermal conductivity
thermal-cycling
particle irradiation
