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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。
Thin film materials in the detector has an important application, in the deep space irradiation environment, its mechanical properties will have a greater change. The paper first introduces the application of thin film materials in spacecraft, and then studies the mechanical properties of Kapton / Al thin film materials under the far ultraviolet radiation. The results show that the tensile strength and elongation at break of the films decrease with the increase of the tensile speed with the increase of the tensile speed, decrease linearly with the increase of the far-ultraviolet radiation dose, The main reason for the increase of the relative content of CH groups is the decrease of the mechanical properties of the films. The molecular bonds of the films are broken and cross-linked. The C-CO and C-N bonds are broken and deoxygenated and denitrified.