摘要
薄膜材料在探测器中有着重要的应用,在深空辐照环境下,其力学性能将发生较大的变化。文章首先介绍了薄膜材料在航天器中的应用,接着对Kapton/Al薄膜材料空间远紫外辐照下的力学性能进行了研究。研究发现:随着拉伸速度增加,薄膜的抗拉强度和断裂伸长率随着拉伸速度的增加而降低;随着远紫外曝辐量的增加而呈线性减小;远紫外辐照下薄膜材料分子键出现断裂和交联,C―CO和C―N键断裂并发生脱氧和脱氮,C-H基团相对含量增大的主要原因是薄膜力学性能降低。
Films are widely used in spacecrafts, but their mechanical properties would degrade in space irradiation environment. This paper reviews the applications of films in spacecraft and the effects of far ultraviolet irradiation on the mechanical properties of Kapton/Al film. It is shown that the tensile strength and the rupture elongation of Kapton/Al film decrease with the increase of the tensile deformation rate and the far ultraviolet irradiation. The far ultraviolet irradiation will cause the rupture and cross linkage of molecular bonds in the film, deoxidation of C―CO, denitrification of C―N. The increase of C―H percentage attributes mainly to the mechanical property degradation of Kapton/Al film under far ultraviolet irradiation.
出处
《航天器环境工程》
2010年第5期600-603,539,共4页
Spacecraft Environment Engineering
基金
航天科技基金资助项目
关键词
力学性能
远紫外
抗拉强度
mechanical property
far ultraviolet
tensile strength
