中文摘要：

聚酰亚胺（PI）薄膜在空间高能粒子辐射环境下会发生力学性能退化.文章利用钴源辐照试验装置和热重分析、XPS 分析等对均苯型PI 薄膜在γ 射线辐照下的力学性能退化及其规律进行研究,发现在γ 射线辐照下,PI 薄膜有明显的总剂量效应和剂量率效应.

英文摘要：

Polyimide films might be damaged under space high energy particle irradiation. In this paper, the mechanical properties of polyimide film is studied with the60Co radiation source, the thermo-gravimetric analysis and the XPS analysis. Significant total dose effect and dose rate effects are found in the mechanical properties of the PI film under gamma ray radiation.