Prepreg and fiber-reinforced composite material
AssigneeMitsubishi Chemical Corporation
InventorsTakuya Teranishi, Satoshi Okamoto, Akira Oota, Masahiro Ichino
Life of this patent
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Abstract
A prepreg contains: a reinforcing fiber material; and a resin composition with which the reinforcing fiber material is impregnated. The resin composition contains an epoxy resin, an amine curing agent, and an imidazole curing agent. An amount of the amine curing agent is less than or equal to 3.8 parts by mass, relative to 100 parts by mass of the epoxy resin, and a sum of the amount of the amine curing agent and an amount of the imidazole curing agent is less than or equal to 10 parts by mass, relative to 100 parts by mass of the epoxy resin. The fiber-reinforced composite material is a cured product of the prepreg.
Claims19
A prepreg, comprising:
- a reinforcing fiber material;
- and
- an epoxy resin composition with which the reinforcing fiber material is impregnated, the epoxy resin composition comprising
- an epoxy resin component comprising a bisphenol A epoxy resin, a phenol novolac type epoxy resin, and an oxazolidone ring-containing epoxy resin which comprises an oxazolidone ring in a molecule,
- an amine curing agent, and
- an imidazole curing agent,
- wherein a content of the amine curing agent in the epoxy resin composition is in a range of from 1 to 3.8 parts by mass, relative to 100 parts by mass of the epoxy resin component,
- wherein a sum of the content of the amine curing agent and a content of the imidazole curing agent in the epoxy resin composition is in a range of from 5 to 10 parts by mass, each relative to 100 parts by mass of the epoxy resin component, and
- wherein a content of the oxazolidone ring-containing epoxy resin in the epoxy resin composition is greater than or equal to 25 parts by mass, relative to 100 parts by mass of the epoxy resin component.
Dependencies are inferred from the claim text.