Improved space survivability of polyhedral oligomeric silsesquioxane (POSS) polyimides fabricated via novel POSS-diamine

被引：94

作者：

Lei, Xing-Feng ^{[1
]}

Qiao, Ming-Tao ^{[1
]}

Tian, Li-Dong ^{[1
]}

Yao, Pan ^{[1
]}

Ma, Yong ^{[1
]}

Zhang, He-Peng ^{[1
]}

Zhang, Qiu-Yu ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Dept Appl Chem, Key Lab Space Appl Phys & Chem, Minist Educ, Xian 710072, Peoples R China

来源：

CORROSION SCIENCE | 2015年 / 90卷

基金：

中国国家自然科学基金;

关键词：

Polymer; XPS; Weight loss; Interfaces; Oxidation; OXIDE-CONTAINING POLYIMIDES; GAS PERMEATION PROPERTIES; OXYGEN-ATOM EROSION; ATMOSPHERIC CORROSION; DIELECTRIC-PROPERTIES; HYPERTHERMAL O; VUV RADIATION; FEP TEFLON; HYBRID; NANOCOMPOSITES;

D O I：

10.1016/j.corsci.2014.10.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polyhedral oligomeric silsesquioxane (PUSS) surrounded by two amine groups, namely POSS-diamine, was prepared via hydrolytic co-condensation. PUSS polyimide hybrid membranes were subsequently fabricated by co-polymerizing POSS-diamine with imide monomers. Hybrid membranes exhibit significantly improved space survivability. A hybrid membrane with 29.7 wt% PUSS loading shows the best atomic oxygen (AO) resistance with the lowest erosion yield of 0.9 x 10(-25) cm(3).atom(-1). The enhancement in AO resistance is attributed to the formation of a SiO2 passivating layer on the membrane surface upon AO exposure. PUSS polyimides with desirable AO survivability may find wide usage in aerospace. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：223 / 238

页数：16

共 66 条

[1] A STUDY OF CORROSION INITIATION ON POLYIMIDE COATINGS [J].