Prepreg

Abstract

A prepreg containing at least the following components [A] to [D], wherein the prepreg includes: a first layer in which the component [A] is impregnated with a first resin composition containing the components [B] and [C]; and a second layer that contains a second resin composition containing the components [B] to [D] and is formed on both surfaces of the first layer, and the first layer and the second layer are adjacent to each other, an average fiber diameter of a carbon fiber as the component [A] is 6 μm or more and 9 μm or less, and a content of a bifunctional amine type epoxy resin [B1] is 15 parts by mass or more and less than 40 parts by mass based on 100 parts by mass of a total amount of epoxy resin of the component [B]: [A] a carbon fiber; [B] an epoxy resin; [C] a curing agent; and [D] thermoplastic resin particles. The present invention provides a prepreg that is excellent in tensile strength, heat resistance, and impact resistance, and provides a carbon fiber composite material suitable as a structural material of an aircraft body, and is further excellent in impregnating property in the production of the prepreg and conveyance property of the prepreg in an automated lay-up device.

Dependencies are inferred from the claim text.