Erosion Effects of Atomic Oxygen on Polyhedral Oligomeric Silsesquioxane-Polyimide Hybrid Films in Low Earth Orbit Space Environment

IMR OpenIR

	Erosion Effects of Atomic Oxygen on Polyhedral Oligomeric Silsesquioxane-Polyimide Hybrid Films in Low Earth Orbit Space Environment
	S. W. Duo; M. M. Song; T. Z. Liu; C. Y. Hu; M. S. Li
	2013
发表期刊	Journal of Nanoscience and Nanotechnology
ISSN	1533-4880
卷号	13 期号:2 页码:1356-1359
摘要	A novel polyimide (PI) hybrid nanocomposite containing polyhedral oligomeric silsesquioxane (POSS) had been prepared by copolymerization of trisilanolphenyl-POSS, 4,4'-oxydianiline (ODA), and pyromellitic dianhydride (PMDA). The AO resistance of these PI/POSS hybrid films was tested in the ground-based AO simulation facility. Exposed and unexposed surfaces were characterized by SEM and X-ray photoelectron spectroscopy. SEM images showed that the surface of the 20 wt% PI/POSS became much less rough than that of the pristine polyimide. Mass measurements of the samples showed that the erosion yield of the PI/POSS (20 wt.%) hybrid film was 1.2 x 10(-25) cm(3)/atom, and reduced to 4% of the polyimide film. The XPS data indicated that the carbon content of the near-surface region was decreased from 60.1 to 13.2 at% after AO exposure. The oxygen and silicon concentrations in the near-surface region increased to 1.96 after AO exposure. The nanometer-sized structure of POSS, with its large surface area, had led AO-irradiated samples to form a SiO2 passivation layer, which protected the underlying polymer from further AO attack. The incorporation of POSS into the polyimide could dramatically improve the AO resistance of polyimide films in low earth orbit environment.
部门归属	[duo, shuwang ; song, mimi ; liu, tingzhi ; hu, changyuan] jiangxi sci & technol normal univ, jiangxi key lab surface engn, nanchang 330013, peoples r china. [li, meishuan] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [duo, shuwang] zhejiang univ, dept mat sci & engn, hangzhou 310027, zhejiang, peoples r china. ; duo, sw (reprint author), jiangxi sci & technol normal univ, jiangxi key lab surface engn, nanchang 330013, peoples r china.
关键词	Hybrid Materials Poss Polyimide Atomic Oxygen Nanocomposites Degradation Coatings Polymer Oxide
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71199
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. W. Duo,M. M. Song,T. Z. Liu,et al. Erosion Effects of Atomic Oxygen on Polyhedral Oligomeric Silsesquioxane-Polyimide Hybrid Films in Low Earth Orbit Space Environment[J]. Journal of Nanoscience and Nanotechnology,2013,13(2):1356-1359.
APA	S. W. Duo,M. M. Song,T. Z. Liu,C. Y. Hu,&M. S. Li.(2013).Erosion Effects of Atomic Oxygen on Polyhedral Oligomeric Silsesquioxane-Polyimide Hybrid Films in Low Earth Orbit Space Environment.Journal of Nanoscience and Nanotechnology,13(2),1356-1359.
MLA	S. W. Duo,et al."Erosion Effects of Atomic Oxygen on Polyhedral Oligomeric Silsesquioxane-Polyimide Hybrid Films in Low Earth Orbit Space Environment".Journal of Nanoscience and Nanotechnology 13.2(2013):1356-1359.