Mitsubishi Rayon Company, Limited

Mitsubishi Chemical Corporation

Teppei Miura

Takayuki Kobayashi

Atsushi Nakajima

Kenichi Watanabe

Manabu Kaneko

Tadao Samejima

Masahiro Ichino

Takuya Teranishi

Naoki Aoyama

Kiharu Numata

Kazutami Mitani

Yoshiko Irie

Kazuki Koga

Yasuyuki Fujii

Masahiro Hata

Norifumi Hirota

Takeshi Nii

Takayuki Kiriyama

Yuusuke Shinmen

Hiroyuki Nakao

Akiyoshi Kogame

Harumi Matsuda

Naomasa Matsuyama

Akira Miyauchi

Shouhei Mori

Masaki Kusumi

Shigekazu Takeda

Toshiyuki Itou

This prepreg comprises reinforcing fibers and a matrix resin composition. The matrix resin composition comprises at least an epoxy resin (component (A)), a radical polymerizable unsaturated compound (component (B)), and a polymer formed by radical polymerization of the component (B) (component (E)).

Prepreg and method for producing same

The present invention relates to a method for producing a prepreg which contains reinforcing fibers and a matrix resin composition with the weight per square meter of the reinforcing fibers being 250-2,000 g/m. The production method comprises the following steps (1)-(3): (1) a matrix resin composition blending step for obtaining a matrix resin composition by mixing an epoxy resin, a radically polymerizable unsaturated compound, an epoxy resin curing agent and a polymerization initiator that generates radicals, in said step the content of the radically polymerizable unsaturated compound relative to 100% by mass of the total of the epoxy resin and the radically polymerizable unsaturated compound being 10-25% by mass; (2) a matrix resin composition impregnating step; and (3) a surface viscosity increasing step.

Matrix resin composition, prepreg and method for producing the same, and fiber-reinforced composite material

A method for producing a fiber-reinforced composite material having high mechanical properties and high heat resistance, and allowing the use of a gypsum die in primary curing, wherein a fiber-reinforced prepreg, obtained by impregnating reinforcing fibers with an epoxy resin composition comprising a triphenylmethane-type epoxy resin, N,N,N',N&#x2032;-tetraglycidyldiaminodiphenylmethane (B) and diaminodiphenylsulfone (C), is subjected to primary curing at 110-130&#xb0; C., and then to secondary curing at a temperature which is at least as high as the primary curing temperature.

Method for producing fiber-reinforced composite material, and heat-resistant mold material and heat-resistant structural material using the fiber-reinforced composite material

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Toyohashi, Japan

Teppei Miura