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In situ polymerization of monomers for polyphenylquinoxaline/graphite fiber compositesMethods currently used to prepare fiber reinforced, high temperature resistant polyphenylquinoxaline (PPQ) composites employ extremely viscous, low solids content solutions of high molecular weight PPQ polymers. An improved approach, described in this report, consists of impregnating the fiber with a solution of the appropriate monomers instead of a solution of previously synthesized high molecular weight polymer. Polymerization of the monomers occurs in situ on the fiber during the solvent removal and curing stages. The in situ polymerization approach greatly simplifies the fabrication of PPQ graphite fiber composites. The use of low viscosity monomeric type solutions facilitates fiber wetting, permits a high solids content, and eliminates the need for prior polymer synthesis.
Document ID
19740042117
Document Type
Conference Proceedings
Authors
Serafini, T. T.
Delvigs, P.
Vannucci, R. D. (NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1974
Subject Category
MATERIALS, NONMETALLIC
Meeting Information
Annual Conference on the wide world of reinforced plastics(Washington, DC)
Distribution Limits
Public
Copyright
Other