Teijin Limited

Teijin Carbon Europe Gmbh

Hironori Kawamoto

Toru Kaneko

Hiroaki Kuwahara

Yosuke Nakamura

Akimichi Oda

Takaya Suzuki

Hidekazu Yoshikawa

Shuhei Yoshida

According to the present invention, there is provided a prepreg characterized by including a reinforcing fiber substrate composed of a reinforcing fiber, and an epoxy resin composition with which the reinforcing fiber substrate is partially or wholly impregnated, in which the epoxy resin composition includes, as an essential component, an epoxy resin, an amine-based curing agent, and a polyamide particle, the epoxy resin composition includes, as an optional component, an epoxy resin-soluble thermoplastic resin; and an epoxy group is introduced to the surface of the polyamide particle, and/or at least one of the epoxy resin, the amine-based curing agent, and the epoxy resin-soluble thermoplastic resin, included in the epoxy resin composition, partially permeates into the polyamide particle.

Prepreg, method for producing same, and method for producing fiber-reinforced composite material

An object of the present invention is to provide a carbon fiber which exhibits excellent strength development rate when used in a composite material. The present invention that solves the problems is a carbon fiber which simultaneously satisfies the following formulae (1) and (2):&#x2264;3&#x2003;&#x2003;(1)TS&#xd7;&#x3e;6.0&#xd7;10&#x2003;&#x2003;(2)

Carbon fiber bundle, prepreg, and fiber-reinforced composite material

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Osaka, Japan

Hironori Kawamoto