EPOXY RESIN COMPOSITION, PREPREG AND FIBER-REINFORCED COMPOSITE MATERIAL

• Main Authors: MISUMI, Jun, SAKATA, Hiroaki
• Format: Patent
• Language: English; French; German
• Published: 28.10.2020
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The purpose of the present invention is to provide: an epoxy resin composition which enables the achievement of an epoxy resin cured product that exhibits excellent heat resistance, and which has both good pot life at production process temperatures and excellent curability that enables curing in a short time; and a prepreg and a fiber-reinforced composite material, each of which uses this epoxy resin composition. In order to achieve the above-described purpose, the present invention has the following configurations. Namely, an epoxy resin composition which contains at least the constituent elements [A]-[C] described below, and wherein the functional group equivalent ratio of the amino groups of the constituent element [B] to the epoxy groups of the constituent element [A] is from 0.7 to 1.5 and the blending amount of the constituent element [C] relative to 100 parts by mass of the constituent element [A] is 1-10 parts by mass; and a prepreg and a fiber-reinforced composite material, each of which uses this epoxy resin composition. [A] an epoxy resin [B] an amine curing agent [C] a phenolic compound that is composed of one or more phenolic compounds having a specific structure