Toray Industries, Inc.

Toyota Jidosha Kabushiki Kaisha

Toray Industies, Inc.

Tetsuyuki Kyono

Haruo Obara

Hajime Kishi

Keizo Ono

Soichi Ishibashi

Shoji Yamane

Toshiyuki Miyoshi

Fumiaki Noma

Toyokazu Minakuchi

Masazumi Tokunoh

Atsuo Tanaka

Toshihide Sekido

Tadashi Donomoto

Hiromitsu Kanamori

Kazuhiko Nishimura

Shinya Isoi

Atsushi Kitamura

Tohru Hanano

Tohru Hotta

Kosuke Yoshimura

Ryoichi Matsuura

Masahiro Okada

Molding material and production process

Epoxy resin composition for a fiber-reinforced composite material, yarn prepreg, and process and apparatus for preparing the same

Applying a sizing agent as a water dispersed sizing agent to a continuous carbon fiber bundle consisting of 20,000 to 150,000 filaments, controlling the packing density in a range of 5,000 to 20,000 D/mm, cutting the carbon fiber bundle in a wet state of 10 to 35 wt % in solution content at the time of cutting, and drying with vibration at a solution content of 15 to 45 wt % before drying.

Process for producing chopped carbon fibers

A bundle of short chopped carbon fibers impregnated with a sizing agent, the short fiber bundle having an average weight per unit length of 1.7 to 4 mg/mm in the fiber length direction and a coefficient of variation of 30 to 60% in the distribution of weight per unit length in the fiber length direction.

Chopped carbon fibers and a production process there of

Curved pipe and process and apparatus for producing the same

A method for manufacturing a precursor wire for a CFRM material, which comprised a continuous carbon fiber bundle of carbon filaments as a reinforcement and a metal as a matrix. In a pretreatment process, the fiber bundle with a sizing agent adhered thereto is passed through an inert atmosphere at a temperature in the range of from 350.degree. to 800.degree. C., thereby thermally decomposing the sizing agent, the chemical structure of the sizing agent including ether linkages, and a residue of thermal decomposition containing the ether linkages is left on the surface of each single filament. In a chemical vapor deposition process, a material gas containing a titanium compound and a boron compound and a reducing gas containing zinc are caused to act simultaneously on the fiber bundle at a temperature in the range of from 700.degree. to 800.degree. C. after the sizing agent is thermally decomposed, thereby forming a primary layer of oxides of titanium and boron on each of the single filaments, and a surface layer of titanium and boron is formed on the primary layer. The primary layer and the surface layer serve considerably to improve the wettability between the carbon fibers and the matrix metal.

Method for manufacturing a precursor wire for a carbon-fiber-reinforced

A method for manufacturing a composite material which includes carbon material in a matrix metal by first applying tetraisopropyltitanate to the carbon material so as to wet it, next drying the carbon material which is wetted with the tetraisopropyltitanate, and then combining the carbon material with the matrix metal. This drying may be done by heating up the carbon material which is wetted with the tetraisopropyltitanate to a temperature of 50.degree. C. to 200.degree. C. in the atmosphere. The tetraisopropyltitanate may be dissolved in ethanol when it is being applied to the carbon material. The matrix metal may be a metal selected from the group consisting of aluminum, magnesium, aluminum alloy, and magnesium alloy.

Method for making carbon/metal composite pretreating the carbon with

Growing community of inventors

Ehime, Japan

Tetsuyuki Kyono