PREPREG AND FIBER-REINFORCED COMPOSITE MATERIAL

摘要

A prepreg giving a cured product exhibiting a lowered water adsorption comprising reinforcing fibers and a matrix resin comprising an epoxy resin of a specific composition, a curing agent of a specific structure, and a highly heat-resistant thermoplastic resin; a prepreg improved in interlaminar strength comprising reinforcing fibers and a matrix resin comprising an epoxy resin of a specific composition, a curing agent of a specific structure, and a highly heat-resistant thermoplastic resin; a prepreg improved in interlaminar strength and giving a cured product exhibiting a lowered water absorption, comprising reinforcing fibers and a matrix resin comprising an epoxy resin of a specific composition, a curing agent of a specific structure, and a highly heat-resistant thermoplastic resin; and a product prepared by curing the prepeg which is satisfactory in both impact resistance (residual compressive strength after impacting) and characteristics in a wet-heat atmosphere (compressive strength of perforated plate under the circumstances of high temperature and humidity), both properties having been conflicting with each other in the prior art.