Toray Industries, Inc.

Naoki Muraki

Tomoko Ichikawa

Fumihiko Tanaka

Haruki Okuda

Jun Watanabe

Yuuki Okishima

Masafumi Ise

Kengo Hayashida

A sizing agent-coated carbon fiber bundle has a sizing agent containing an aliphatic epoxy compound (C) and an aromatic epoxy compound (D) coated on the carbon fiber bundle, wherein the carbon fiber in the carbon fiber bundle is the one which exhibits, when measured by single-fiber composite fragmentation method, a number of fiber breaks of at least 2.0/mm when apparent single-fiber stress is 15.3 GPa and the number of fiber breaks of up to 1.7/mm when the apparent single-fiber stress is 12.2 GPa.

Sizing agent-coated carbon fiber bundle, carbon fiber bundle production method, and prepreg

Growing community of inventors

Otsu, Japan

Naoki Muraki