Teijin Limited

Guofei Hua

Akihisa Nomura

Takeru Ohki

Makoto Ootsubo

Takumi Kato

Yuhei Konagai

Daisuke Kobayashi

Shuhei Onoue

Takashi Toyozumi

Shuhei Suzuki

Katsuaki Yuasa

Yohei Shinfuku

Noriyuki Amano

Kentaro Suzuki

A composite material includes a thermoplastic matrix resin and carbon fibers A including carbon fiber bundles A1 in which Li/(Ni×Di) is 6.7×10to 3.3×10, and a thermoplastic matrix resin. The carbon fibers A have a fiber length of 5-100 mm and the carbon fiber bundles A1 are contained in an amount of 80 vol % or larger but less than 100 vol % with respect to the carbon fibers A and wherein removal of the matrix resin from the composite material gives a carbon fiber mass which, when compressed to a thickness of Tf, has a repulsive force P of 0.05-1.00 MPa A method for producing the composite material including subjecting a composite composition to an impregnation treatment with a compression/impregnation device.

Composite material and production method therefor

A composite material which includes a thermoplastic matrix resin and carbon fibers A including carbon fiber bundles A1 in which Li/(Ni&#xd7;Di) satisfies 6.7&#xd7;10to 3.3&#xd7;10, wherein the carbon fibers A have a fiber length of 5-100 mm and have a value of Lw/(Nave&#xd7;D) of 1.0&#xd7;10to 3.3&#xd7;10, the carbon fiber bundles A1 having an average bundle width Wless than 3.5 mm and being contained in an amount of 90 vol % or larger with respect to the carbon fibers A A production method for producing a molded object from the composite material is also provided.

Composite material, production method for molded object, and production method for composite material

The present invention provides a heating device and a method for manufacturing a heated molding material. The method uses the heating device to continuously manufacture the heated molding material. The heating device includes a heating chamber for heating a molding material, at least one opening section for feeding or expelling molding material therethrough, and a means for using nitrogen gas or superheated steam to expel oxygen gas present in the heating chamber.

Method for manufacturing heated molding material and device for heating molding material

A press-molded product includes: carbon fibers having a weight average fiber length of 1 mm or more; a polyamide-based resin (X); and a polyarylene ether-based resin (Y). The carbon fibers include carbon fiber bundles. The polyamide-based resin (X) and the polyarylene ether-based resin (Y) form a sea-island structure inside and outside the carbon fiber bundles. In the sea-island structure, one of the polyamide-based resin (X) and the polyarylene ether-based resin (Y) forms a sea phase and the other forms an island phase having a particle diameter Dr of 0.05 &#x3bc;m or more and less than 50 &#x3bc;m.

Press-molded product and composite material

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Osaka, Japan

Guofei Hua