空间光学成像系统用高尺寸稳定光学聚酰亚胺薄膜  

High dimensional stability polyimide membrane material for space optical imaging system

作　　者：殷家家 毛丹波 范斌[1] 边疆[1] 杜俊峰[1] Yin Jiajia;Mao Danbo;Fan Bin;Bian Jiang;Du Junfeng(Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu,Sichuan 610209,China)

机构地区：[1]中国科学院光电技术研究所,四川成都610209

出　　处：《光电工程》2021年第10期1-9,共9页Opto-Electronic Engineering

基　　金：国家重点研发计划“地球观测与导航专项-静止轨道高分辨率成像相机系统技术”资助课题(2016YFB0500200)。

摘　　要：空间光学成像系统采用薄膜主镜解决了大口径、轻量化、空间折叠展开等难题,但大口径光学透镜的成像指标要求高、空间应用环境恶劣,对透镜基底材料的性能要求严苛,其中尺寸稳定性、空间环境适应性尤为重要。本文提出在分子结构设计基础上,通过共聚合成的方法有效改性聚酰亚胺材料,通过在分子结构中同时引入刚性链和分子链间氢键作用,在保证传统聚酰亚胺高机械性能、高热稳定性的同时,改善其热尺寸稳定性、空间环境光学稳定性。所得高尺寸稳定性光学级聚酰亚胺薄膜材料综合性能良好,是优异的空间光学成像系统薄膜主镜候选材料。Polymer membranes are attractive mirror candidate for the space large aperture lightweight optical im-aging system.But there are strict requirements for mirror material because of the harsh space application environ-ment and the high optical imaging quality requirement.The dimensional stability is one of the most important prop-erties for optical mirror material.In this research,based on the molecular structure design,rigid molecular chain and hydrogen chain have been introduced to polyimide to improve the thermal dimensional stability.At the same time,the excellent mechanical,optical and thermal properties of the polyimide membrane have been guaranteed.The obtained optical grade polyimide has high dimensional stability,and the optical stability of the space environment and the excellent comprehensive properties are good candidates for the lightweight optical application.

关 键 词：光学聚酰亚胺薄膜 高尺寸稳定性 空间环境光学稳定性 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业]