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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
Source PublicationJournal of Nanoscience and Nanotechnology
ISSN1533-4880
Volume13Issue:2Pages:1356-1359
AbstractA 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.
description.department[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.
KeywordHybrid Materials Poss Polyimide Atomic Oxygen Nanocomposites Degradation Coatings Polymer Oxide
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71199
Collection中国科学院金属研究所
Recommended Citation
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.
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