| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an epoxy resin composition having low viscosity, high Tg, high elastic modulus and excellent in toughness; and to provide a fiber-reinforced composite material having excellent heat resistance, compressive strength, impact resistance, fatigue resistance and tensile characteristics, thereby being suitable for aircraft members or the like. <P>SOLUTION: The method for producing an epoxy resin composition comprises: individually preparing in advance a principal agent [A1] containing a specified epoxy resin and satisfying specific conditions, and a curing agent [B1] containing 3,3'-diisopropyl-5,5'-dimethyl-4,4'-diaminodiphenylmethane and 3,3',5,5'-tetraisopropyl-4,4'-diaminodiphenylmethane and satisfying specific conditions; holding [A1] and [B1] separately until the time of use; and mixing [A1] and [B1] before use. <P>COPYRIGHT: (C)2012,JPO&INPIT |
