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Liquid oxygen-compatible filament-winding matrix resinPolyurethanes derived from hydroxy terminated polyperfluoro propylene oxide prepolymers were evaluated as matrix resins for filament wound composites which would be exposed to liquid (and 100% gaseous) oxygen environments. A number of structural modifications were brought about by variations in prepolymer molecular weight, and alternative curing agents which allowed retention of the oxygen compatibility. Although satisfactory performance was achieved at sub-ambient temperatures, the derived composites suffered considerable property loss at ambient or slightly elevated temperatures. To attain overall effectiveness of the composite system, upgrading of the polymer thermomechanical properties must first be achieved.
Document ID
19740002433
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Harrison, E. S.
(Whittaker Corp. San Diego, CA, United States)
Date Acquired
September 3, 2013
Publication Date
September 1, 1973
Subject Category
Materials, Nonmetallic
Report/Patent Number
WRD-3028
NASA-CR-134464
Accession Number
74N10546
Funding Number(s)
CONTRACT_GRANT: NAS3-15832
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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