耐原子氧高性能聚合物的结构设计与抗蚀机理研究

项目名称： 耐原子氧高性能聚合物的结构设计与抗蚀机理研究

项目编号： No.50803003

项目类型： 青年科学基金项目

立项/批准年度： 2009

项目学科： 生物科学

项目作者： 王凯

作者单位： 北京航空航天大学

项目金额： 20万元

中文摘要： 我国载人航天技术发展迅速，如何克服低地球轨道（LEO）空间环境效应对航天器的不良影响成为急需解决的问题。本课题以航天领域常用的聚酰亚胺、环氧树脂等高性能聚合物为研究对象，分别从单体分子结构设计和聚合物组分设计出发，自制一系列含硅、锆、膦氧等耐原子氧基团的新型高性能聚合物，考察耐原子氧基团的结构、含量、相互协同作用和聚合物的聚集态结构、组分等对其各种性能，特别是耐原子氧性能的影响，并通过观测聚合物在真空紫外辐射-原子氧环境下的分子结构和聚集态结构的演化过程，推测其抗原子氧剥蚀的机理，为制备综合性能优良的耐原子氧高性能聚合物材料提供理论指导和实验基础。

中文关键词： 耐原子氧；高性能聚合物；剥蚀机理；低地球轨道空间；分子设计

英文摘要： China's manned space technology has developed rapidly. The stringent requirements for spacecrafts to function in low-earth orbit (LEO) pose urgent challenges that remain to be addressed. This subject focuses on some high-performance polymer candidates in space applications, e.g. polyimides and epoxy resins. Based on novel systematic monomer structural design and chemical modification of polymer structures, a series of atomic oxygen resistant groups which contains silicon, zirconium or phosphine-oxide will be introduced into polymer structure to yield hybrid novel structures that target on improving atomic oxygen resistance. The effects of structure and content of the atomic oxygen resistant groups and synergistic effects of these groups on the properties, in particular, atomic oxygen-resistant properties of the high-performance polymers will be investigated. The effects of component and aggregation structure on the atomic oxygenresistant properties of the polymers will also be studied. The observation of molecular and aggregation structure evolution of these polymers in a vacuum ultraviolet radiationatomic oxygen environment will be performed to reveal the mechanism of atomic oxygenresistance for the polymers. The results of this project will provide theoretical guidance for materials selection and experimental basis for preparation of high performance polymers with atomic oxygen resistance.

英文关键词： atomic oxygen resistance; high performance polymers; erosion mechanism; LEO; molecular design