原子氧作用下聚合物薄膜材料表面形貌变化研究综述

原子氧作用造成航天器用聚合物薄膜的表面形貌发生显著变化，服役性能下降。基于此，从试验和仿真2个方面对相关研究进行了综述，总结了聚酰亚胺薄膜粗糙度及透过率随原子氧通量的变化，发现随累积通量增加，薄膜表面粗糙度增大，造成其透过率下降，但变化规律仍不清楚。对改性聚酰亚胺薄膜、其他聚合物薄膜及空间环境协合效应下聚合物薄膜的形貌变化进行了分析，分析了原子氧与聚合物材料作用仿真方法，对原子氧掏蚀形貌仿真结果进行了总结，指出了聚合物薄膜形貌变化机理研究中的关键科学问题。

Review of Morphological Changes of Polymeric Materials under Atomic Oxygen Exposure

The significant changes in the surface morphology of polymer films used in spacecrafts due to the action of atomic oxygen (AO) in orbit degrade the service performance of spacecrafts. In this paper, relevant researches were reviewed from the aspects of experiment and simulation. The changes of roughness and transmittance of polyimide films under AO exposure were reviewed. It was found that with the increase of AO fluences, the roughness was increased, the transmittance was decreased, but the rule of change was still unclear. Then modification of polyimide films, other polymer films and morphological changes of polymer films under synergistic effects of space environments were reviewed and analyzed. Then simulation methods of AO with polymer were analyzed, and the published simulation results of AO undercutting were summarized, and key scientific problems in the study of the morphology change mechanism of polymer films were pointed out.