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AssigneeToray Industries, Inc.
InventorKazunori Hondo
Estimating the term…
Provided is an epoxy resin composition and a fiber-reinforced composite material using the epoxy resin composition, where the epoxy resin composition is capable of maintaining a low viscosity while being injected into a reinforcing fiber substrate and is also capable of imparting to a fiber-reinforced composite material high-level physical properties required for use as a structural material even in cases where the temperature increase rate during thermal curing is low, where the epoxy resin composition contains [A] tetraglycidyl diaminodiphenylmethanein an amount of not less than 70% by mass and not more than 90% by mass of total epoxy resin components taken as 100% by mass, [B] a bisphenol F-type epoxy resin in an amount of not less than 10% by mass and not more than 30% by mass by mass of total epoxy resin components taken as 100% by mass, [C] 4,4′-methylenebis(3-chloro-2,6-diethylaniline), and [D] 4,4′-methylenebis(3,3′,5,5′-tetraisopropylaniline).
An epoxy resin composition for fiber-reinforced composite material, comprising [A] tetraglycidyl diaminodiphenylmethane in an amount of not less than 70% by mass and not more than 90% by mass of total epoxy resin components taken as 100% by mass, [B] a bisphenol F-type epoxy resin having a resin viscosity at 50° C. in a range of 1,000 to 8,000 mPa·s in an amount of not less than 10% by mass and not more than 30% by mass by mass of total epoxy resin components taken as 100% by mass, [C] 4,4′-methylenebis(3-chloro-2,6-diethylaniline), and [D] 4,4′-methylenebis(3,3′,5,5′-tetraisopropylaniline).
Dependencies are inferred from the claim text.