| 摘要 |
PROBLEM TO BE SOLVED: To provide an epoxy resin composition that gives a resin cured material having a high elastic modulus, high heat resistance and high toughness as a matrix resin for a fiber reinforced composite material, and to provide a fiber-reinforced composite material showing high tensile strength and compressive strength.SOLUTION: The epoxy resin composition contains a component (A): a glycidyl amine type epoxy resin, a component (B): a glycidyl aniline type epoxy resin and/or an epoxy resin having a condensed aromatic cyclic structure, and a component (C): polyether sulfone, wherein the component (C) is included by 25 to 65 parts by mass with respect to 100 parts by mass of the whole epoxy resin components, and a mass ratio WB/WA of (A) to (B) is not less than 0.35, and (C) is uniformly dissolved in (A) and (B). |
