张燕, 王振中, 吴昊, 等. 本征抗原子氧聚酰亚胺超细纤维膜的制备与性能研究[J]. 航天器环境工程, 2024, 41(3): 311-318 DOI: 10.12126/see.2023111
引用本文: 张燕, 王振中, 吴昊, 等. 本征抗原子氧聚酰亚胺超细纤维膜的制备与性能研究[J]. 航天器环境工程, 2024, 41(3): 311-318 DOI: 10.12126/see.2023111
ZHANG Y, WANG Z Z, WU H, et al. Preparation and properties of intrinsically atomic oxygen-resistant polyimide ultrafine fibrous membrane[J]. Spacecraft Environment Engineering, 2024, 41(3): 311-318. DOI: 10.12126/see.2023111
Citation: ZHANG Y, WANG Z Z, WU H, et al. Preparation and properties of intrinsically atomic oxygen-resistant polyimide ultrafine fibrous membrane[J]. Spacecraft Environment Engineering, 2024, 41(3): 311-318. DOI: 10.12126/see.2023111

本征抗原子氧聚酰亚胺超细纤维膜的制备与性能研究

Preparation and properties of intrinsically atomic oxygen-resistant polyimide ultrafine fibrous membrane

  • 摘要: 为应对空间探索活动对本征抗原子氧聚酰亚胺超细纤维膜的需求,文章将Si元素与P元素引入到聚酰亚胺分子结构中,采用静电纺丝技术制备了本征抗原子氧聚酰亚胺超细纤维膜。系统研究了Si元素与P元素的引入对超细纤维的化学结构、微观形貌、光学性能、热性能以及抗原子氧侵蚀性能的影响。结果表明:分子结构中引入Si元素和P元素的聚酰亚胺超细纤维膜表面光滑,微观结构呈现连续的纤维状;玻璃化转变温度(Tg)大于290 ℃,450 ℃以下时均表现出良好的热稳定性;且由于引入了Si元素和P元素,在经积分通量为2.0×1021 atom/cm2的原子氧辐照后,聚酰亚胺超细纤维膜的原子氧侵蚀速率与Kapton®相比降低了1个数量级。

     

    Abstract: In response to the need for intrinsically atomic oxygen (AO)-resistant polyimide (PI) ultrafine fibrous membranes in space exploration activities, the electrospun intrinsic AO-resistant PI fibrous membranes were prepared by introducing Si and P elements into the PI molecular structure in this paper. The effects of the incorporation of Si and P on chemical structure, micromorphology, optical properties, thermal properties and AO-resistant properties of PI fibrous membranes were systematically studied. The experimental results indicate that the surfaces of obtained PI fibers are continuous and the fibrous membranes are smooth. The glass transition temperatures of all PI fibrous membranes are more than 290 ℃, and they all show good thermal stabilities below 450 ℃. With the addition of Si and P elements, the AO erosion yields of PI ultrafine fibrous membranes are reduced by an order of magnitude compared with Kapton® after being exposed to AO at a fluence of 2.0×1021 atom/cm2.

     

/

返回文章
返回