NDLI: Evaluation of atomic oxygen resistant protective coatings for fiberglass-epoxy composites in leo

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Evaluation of atomic oxygen resistant protective coatings for fiberglass-epoxy composites in leo

Content Provider	NASA Technical Reports Server (NTRS)
Author	Paulsen, Phillip E. Brady, Joyce A. Rutledge, Sharon K.
Copyright Year	1989
Description	Fiberglass-epoxy composite masts are the prime structural members for the Space Station Freedom solar array. At the altitude where Space Station Freedom will operate, atomic oxygen atoms are the most predominant species. Atomic oxygen is highly reactive and has been shown to oxidize organic and some metallic materials. Tests with random and directed atomic oxygen exposure have shown that the epoxy is removed from the composite exposing brittle glass fibers which could be easily removed from the surface where they could contaminate Space Station Freedom Systems. Protection or fiber containment systems; inorganic based paints, aluminum braid, and a metal coating; were evaluated for resistance to atomic oxygen, vacuum ultraviolet radiation, thermal cycling, and mechanical flexing. All appeared to protect well against atomic oxygen and provide fiber containment except for the single aluminum braid covering. UV radiation resistance was acceptable and in general, thermal cycling and flexure had little to no effect on the mass loss rate for most coatings.
File Size	6961587
Page Count	13
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19890011729
Archival Resource Key	ark:/13960/t5jb12d43
Language	English
Publisher Date	1989-01-01
Access Restriction	Open
Subject Keyword	Nonmetallic Materials Glass Fiber Reinforced Plastics Radiation Effects Earth Orbital Environments Oxidation Resistance Ultraviolet Radiation Epoxy Matrix Composites Solar Arrays Oxygen Atoms Spacecraft Contamination Thermal Cycling Tests Protective Coatings Glass Fibers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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