Inorganic whisker containing impact enhanced prepregs and formulations formulations
AssigneeThe Dexter Corporation
InventorsYang S. Kim, Paul A. Steiner
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Abstract
A prepeg formulation comprising prepreg filament fibers unidirectionally aligned, and/or woven and nonwoven fabrics, a thermosetting matrix resin and a small amount of well dispersed inorganic whiskers in the resin, alone or in combination with extremely fine fibers of a thermoformable polymer having at least one of a T.sub.m or T.sub.g greater than about 300.degree. C. or no T.sub.m or T.sub.g and a decomposition temperature greater than about 300.degree. C. The preferred matrix resin is a blend of a thermosetting epoxy resin and an amorphous thermoplastic polymer having a T.sub.g greater than about 195.degree. C.
Claims16
A prepreg formulation comprising prepreg fabric and filament fibers unidirectionally aligned, a thermosetting matrix resin of a mixed resin of a thermosetting epoxy resin and an amorphous thermoplastic polymer having a T.sub.g greater than about 195.degree. C., a small amount of inorganic whiskers, from the group of carbon whiskers, silicon carbide whiskers, silicon nitride whiskers, and ceramic whiskers, incorporated throughout the resin matrix and a thin surface layer of extremely fine fibers, fibrids or particles of a thermoformable polymer having at least one of a T.sub.m or T.sub.g greater than about 300.degree. C. or no T.sub.m or T.sub.g and a decomposition temperature greater than about 300.degree. C.
Dependencies are inferred from the claim text.