Polycarbodiimide and polyimide/cyanate thermoset in situ molecular composites

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 c...

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Bibliographic Details
Published in:Journal of materials research 1998-07, Vol.13 (7), p.1840-1847
Main Authors: Wiff, D. R., Lenke, G. M., Fleming, P. D.
Format: Article
Language:English
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Summary: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.
ISSN:0884-2914
2044-5326
DOI:10.1557/JMR.1998.0261