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Polycarbodiimide and polyimide/cyanate thermoset in situ molecular composites

Published online by Cambridge University Press:  31 January 2011

D. R. Wiff ,
G. M. Lenke  and
P. D. Fleming III
D. R. Wiff
Affiliation:
Materials Directorate, WL/MLPJ, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433
G. M. Lenke
Affiliation:
49 5th Street S.E., Massillon, Ohio 44646
P. D. Fleming III
Affiliation:
Department of Paper & Printing Science and Engineering, Western Michigan University, Kalamazoo, Michigan 49008
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Extract

The synthesis of polycarbodiimide and polyimide in a cyanate resin precursor was achieved. A unique procedure for achieving a high molecular weight of the molecular composite reinforcement molecules was demonstrated. In spite of phase separation being present during the processing, the final cured composites were transparent. The enhanced mechanical properties and the presence of a single Tg, which increases with rigid rod content, were indications that a molecular composite was achieved. The agreement between measured mechanical properties and those predicted using molecular mechanics simulations CERIUS2 software was encouraging.

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Type
Articles
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Journal of Materials Research , Volume 13 , Issue 7 , July 1998 , pp. 1840 - 1847
Copyright
Copyright © Materials Research Society 1998

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