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Acetylene- and Phenylacetylene-Terminated Poly(Arylene Ether Benzimidazole)s (PAEBI's)Polymers prepared by first synthesizing polymers terminated with hydroxy groups, then reacting them with either 4-ethynylbenzoyl chloride or 4-fluoro-4'-phenylethynylbenzophenone. Endcapped polymers thermally cured to yield materials with attractive combination of properties. Cured acetylene-and phenylacetylene-terminated PAEBI's exhibit higher glass-transition temperatures and better retention of mechanical properties at high temperatures. Cured acetylene- and phenylacetylene-terminated polymers exhibit excellent adhesion to copper foil and polyimide film. Potentially useful as adhesives, coatings, composite matrices, fibers, films, membranes, and moldings.
Document ID
19940000146
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Connell, John W.
(NASA Langley Research Center, Hampton, VA.)
Hergenrother, Paul M.
(NASA Langley Research Center, Hampton, VA.)
Smith, Joseph G., Jr.
(Akron Univ.)
Date Acquired
August 16, 2013
Publication Date
March 1, 1994
Publication Information
Publication: NASA Tech Briefs
Volume: 18
Issue: 3
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
LAR-14965
Accession Number
94B10146
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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