Epoxy resin composition for fiber-reinforced composite material, method for producing epoxy resin composition for fiber-reinforced composite material, prepreg, and honeycomb panel

摘要

Provided are: an epoxy resin composition for a fiber-reinforced composite material with which it is possible to obtain a cured article having exceptional adhesiveness to a honeycomb core, the epoxy resin composition being curable at low temperatures and having exceptional flame retardancy and storage stability; a method for producing an epoxy resin composition for a fiber-reinforced composite material; a prepreg; and a honeycomb panel. The epoxy resin composition for a fiber-reinforced composite material of the present invention is characterized by containing: a reaction product obtained by reacting 100 parts by mass of a phosphorus-containing epoxy resin that contains a phosphorus atom in the backbone, and 5-20 parts by mass of an amino group-terminated butadiene-acrylonitrile rubber; an epoxy resin other than a phosphorus-containing epoxy resin; a curing agent; and a curing accelerator.