Mitsubishi Rayon Company, Limited

Kazushige Mihara

Mitsuo Hamada

Hidehiko Ohashi

Makoto Nakamura

Yoshihiko Hosako

Tomoyoshi Chiba

Toshihiko Nishida

An object of the present invention is to provide an apparatus and a method for manufacturing a windable carbonaceous material sheet, which is obtained by continuously curing a long uncured fiber sheet which is obtained by using short fibers to make paper and which contains uncured resin to produce a resin-impregnated cured sheet, and then continuously carbonizing it, and its production process. For the object, a long uncured fiber sheet () is conveyed by conveyance means which is equipped with one rotation belt set () comprising a drive roll (), a follower roll (), and an endless belt () which is put on and around these rolls (). A resin-impregnated cured sheet () is produced by heating and pressurizing the uncured fiber sheet () by resin curing means () which is arranged so as to nip the uncured fiber sheet through the endless belt (). Further, the resin-impregnated cured sheet is continuously conveyed in a horizontal direction, and then is carbonized by the apparatus for manufacturing a carbonaceous material sheet which is equipped with a carbonization treatment chamber for carbonizing a carbonizing material and guide rolls which are provided in the carbonization treatment chamber, so that a carbonaceous material sheet is continuously produced. Then, this is wound up. Accordingly, production efficiency is remarkably improved, and its handling property and conveying property are excellent.

Apparatus and method for manufacturing resin-impregnated cured sheet, and apparatus and method for manufacturing carbonaceous material sheet

A carbon fiber paper including carbon fibers having a surface area ratio of 1.05 or more, and a porous carbon electrode substrate for a fuel cell having this carbon fiber paper as a constituent. The electrode substrate for a fuel cell has carbon fibers uniformly dispersed therein and is flexible. The carbon fiber paper is suitable for production of the electrode substrate.

Carbon fiber paper and porous carbon electrode substrate for fuel cell therefrom

The present invention provides carbon fiber paper consisting of an organic high-molecular compound as a binder and carbon fibers, characterized in that the carbon fibers contain thin fibers with an average diameter smaller than 5 &#x3bc;m and an average fiber length of 3 to 10 mm; a porous carbon electrode substrate for a fuel cell having a thickness of 0.05 to 0.5 mm and a bulk density of 0.3 to 0.8 g/cm, also having a bending strength of 10 MPa or higher and a deflection of 1.5 mm or more at the time of bending, measured by a three-point bending test in conditions of using a sample width of 1 cm, a strain rate of 10 mm/min, and a distance between supporting points of 2 cm; and a method of producing a porous carbon electrode substrate for a fuel cell by impregnating the carbon fiber paper with a thermosetting resin, curing the thermosetting resin by heating and pressing treatment, and then carbonizing the paper.

Porous carbon electrode substrate and its production method and carbon fiber paper

Porous carbon electrode material, method for manufacturing the same, and carbon fiber paper

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Hiroshima, Japan

Kazushige Mihara