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All-aromatic biphenylene end-capped polyquinoline and polyimide matrix resinsBiphenylene end-capped polyquinoline and polyimide resins afford low void content graphite-reinforced composites with good initial properties. However, with both resins, rapid degradation occurs during oxidative isothermal aging at elevated temperatures. The degradation is not observed during isothermal aging under a nitrogen atmosphere which suggests that the biphenylene end-cap (or the resulting crosslink/chain extension structures) is not particularly thermooxidatively stable. The nature of the thermooxidative instability is currently under investigation.
Document ID
19860001800
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Droske, J. P. (Colorado State Univ. United States)
Stille, J. K. (Colorado State Univ. United States)
Alston, W. B. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 12, 2013
Publication Date
September 1, 1985
Publication Information
Publication: High Temp. Polymer Matrix Composites
Subject Category
Nonmetallic Materials
Accession Number
86N11267
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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