NDLI: Preparation and anti atomic oxygen erosion properties of OPPOSS/PI composites

Content Provider	Springer Nature Link
Author	Li, Wei ping Liu, Hui cong Feng, Li li
Copyright Year	2013
Abstract	Atomic oxygen (AO) found in low earth orbit can cause serious erosion to polyimide (PI) materials, which greatly limits their lifetime. 8-phenyl silsesquioxane (OPPOSS) was synthesized, and OPPOSS/PI composites were prepared by physical blending, followed by thermal imidization to enhance the AO erosion resistance of PI materials. The morphology, composition, and structure of the composites were analyzed before and after AO exposure in a ground simulated facility of atomic oxygen. After 16 h AO exposure, the OPPOSS/PI composite with 5wt% OPPOSS addition shows an erosion rate of about 1.4×10$^{−24}$ cm$^{3}$/atom with only 48% mass loss of that of PI without OPPOSS addition. The mixture of OPPOSS nano molecules is assembled into a kind of regular square structure and distributed evenly in OPPOSS/PI composites. Some SiO$_{2}$ particles are formed in the composites during AO exposure, which can act as “inert points” to reduce the AO erosion rate of OPPOSS/PI composites.
Starting Page	994
Ending Page	1000
Page Count	7
File Format	PDF
ISSN	16744799
Journal	International Journal of Minerals, Metallurgy, and Materials
Volume Number	20
Issue Number	10
e-ISSN	1869103X
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-10-17
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	composite materials polyimides silsesquioxanes atomic oxygen erosion Materials Science Metallic Materials Characterization and Evaluation of Materials Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Geochemistry and Petrology Mechanical Engineering

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