Toray Industries, Inc.

Kazuhiro Hatanaka

Atsuki Tsuchiya

Hiroaki Sakata

Hiroshi Taiko

Hidehiro Takemoto

Hideki Nudeshima

Satomi Matsuo

Norio Nakagawa

A fiber-reinforced composite material has an excellent design surface. The prepreg laminate includes at least prepregs [a] having reinforcing fibers impregnated with a resin, and a base material [b] not impregnated with a resin, wherein at least two of the prepregs [a] are stacked in succession, and both sides of the base material [b] are sandwiched by the prepregs [a].

Prepreg laminate and fiber-reinforced composite material, and method of producing fiber-reinforced composite material

Provided are the following: a sandwich structure formed from a core component comprising a discontinuous reinforcing fiber, a thermoplastic resin and voids, and a skin component comprising a continuous reinforcing fiber and a matrix resin, wherein in the core component, 30% or more of the discontinuous reinforcing fiber is covered with the thermoplastic resin and monofilaments of the discontinuous reinforcing fiber intersect one another via the thermoplastic resin; an integrally formed article using the sandwich structure; and methods for the production therefor.

Sandwich structure and integrally formed article using the same, and methods for production thereof

The present invention relates to a sheet-form prepreg which comprises a plurality of carbon fibers and a matrix resin with which the plurality of carbon fibers are impregnated. This matrix resin contains a thermosetting resin, a curing agent, conductive particles of 1 &#x3bc;m or smaller in diameter, conductive particles of 5 &#x3bc;m or larger in diameter and thermoplastic resin particles, and the conductive particles of 1 &#x3bc;m or smaller in diameter, the conductive particles of 5 &#x3bc;m or larger in diameter and the thermoplastic resin particles are each disproportionately distributed in a specific part of the prepreg. By the present invention, a prepreg from which a carbon fiber-reinforced composite material having both excellent impact resistance and good conductivity in the lamination direction can be produced is provided.

Prepreg, method of manufacturing prepreg, and carbon fiber-reinforced composite material

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Iyo-gun, Japan

Kazuhiro Hatanaka