Showa Denko K.k.

Ec-Showa Denko K.k.

Toshihiro Arai

Hiroshi Sakamoto

Tomoaki Kobayashi

Osamu Hamazoe

Tadashi Takeda

Katsuo Kobori

Hiroshi Kirikoshi

The present invention provides a method for manufacturing a conductive structure having high electrical conductivity, and a method for manufacturing a dimensionally accurate separator for a fuel cell having high electrical conductivity. In the present invention, the cavity surface temperature of a mold is kept equal to or higher than the crystal melting temperature (T) of composite material until the shaping of the composite material melted in the mold is completed, and after the completion of the shaping process, the cavity surface temperature of the mold is controlled to be equal to or higher than a temperature 20&#xb0; C. lower than the crystallization temperature (T) of the composite material but equal to or lower than a temperature 20&#xb0; C. higher than the crystallization temperature of the composite material to harden the composite material.

Electroconductive structure, manufacturing method therefor, and separator for fuel cell

The present invention are to provide an electrically conducting resin composition for a fuel cell separator which overcomes the drawbacks of prior arts, and to provide a fuel cell separator produced by molding this electrically conducting resin composition and having both of high electrical conductivity and flexural property. The present invention employs an electrically conducting resin composition for a fuel cell including a component A of polypropylene resin whose melt flow rate is 0.01 or higher and 10 or lower and a component B of electrically conducting filler as well as a fuel cell separator made of the same.

Electrically conducting resin composition for fuel cell separator and fuel cell separator

The purpose of the present invention is to provide a flame-retardant polyamide resin composition which neither causes environment pollution nor liberates toxic combustion gases, exhibits good flame-retardancy even if an inorganic filler is compounded with the polyamide-based resin, and hardly stains the mold during molding. Provision of a flame-retardant polyamide resin composition comprising (A) 20 to 89 wt.-% of a polyamide-base resin consisting of a polyamide resin obtained from xylylene diamine and an &agr;,&ohgr;-straight-chain aliphatic dibasic acid, (B) 1 to 30 wt.-% of a salt of polyphosphoric acid and melamine, and (C) 10 to 50 wt.-% of inorganic filler; and of electrical parts employing the composition.

Flame-retardant polyamide resin composition, and electrical parts employing the same

The object is to provide a flame retardant polyamide resin composition having excellent tensile elongation at break and excellent properties for use as a hinge. A flame retardant polyamide resin composition is provided, which comprises 100 parts by weight of a polyamide resin mixture consisting of a first aliphatic polyamide and at least one polyamide selected from the group consisting of a second aliphatic polyamide, which differs from the first aliphatic polyamide, and a semi-aromatic polyamide, and from 0.4 to 20 parts by weight of a melamine cyanurate-type flame retarder.

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Kawasaki, Japan

Toshihiro Arai