EPOXY polymer composition for fiber-reinforced composite materials, prepregs and fiber-reinforced composite material

摘要

1. The epoxy resin composition for the manufacture of fiber reinforced composite material comprising at least component [A], [B], [C] and [D], the following: [A] epoxy resin; [B] polymer particles, which do not dissolve in the epoxy resin and satisfy the following conditions (b1) - (b3) :( b1) particles having a size distribution index of 1.0 to 1,8, (b2) the particles have a sphericity of 90 or more, and (b3) particles have a glass transition temperature of from 80 to 180 ° C; [C] at least one elastomeric component selected from the group consisting of rubber particles and block copolymers comprising a block with a glass transition temperature of 20 ° C or less; and [D] an epoxy hardener polimera.2. The epoxy resin composition for the manufacture of fiber reinforced composite material according to claim 1, wherein the polymer particles [B] are polyamide particles having a chemical structure represented by the general formula (1): Chemical Compound 1, R wherein R is a hydrogen atom, an alkyl group containing from 1 to 8 carbon atoms, or a halogen atom and may be identical with or different from each other, and wherein R is a methylene group having 1 to 20 carbon atoms or a phenylene group u.3. The epoxy resin composition for the manufacture of fiber-reinforced composite material according to claim 1, wherein the average particle diameter of the polymer particles (B) is from 8 to 35 mkm.4. The epoxy resin composition for the manufacture of fiber reinforced composite material according to claim 1, wherein the elastomer component [C] is at least one block copolymer, you