Sekisui Chemical Co., Ltd.

Kazuhiro Sawa

Koji Taniguchi

Shingo Miyata

Katsunori Takahashi

Nobuhiko Inui

Daisuke Mukohata

Mitsuru Naruta

Yoshihiro Inui

Kensuke Tsumura

Taichi Hamada

Satoshi Maeda

There is provided an electromagnetic wave shielding material excellent in moldability and developing a good electromagnetic wave shielding function. The electromagnetic wave shielding materialcontains a synthetic resin, and an exfoliated graphitebeing a layered body of graphene and having a number of graphene layers of 200 or smaller and an aspect ratio of 20 or higher.

Electromagnetic wave shielding material and layered body for electromagnetic wave shielding

Provided is a resin composite material having a small number of voids and excellent tenacity. The resin composite material may be one obtained by mixing a carbon material having a graphene structure and having a content of less than 1 weight % of a volatile component volatilizable at 200&#xb0; C. and a thermoplastic resin. The resin composite material may be a resin composite material including a carbon material having a graphene structure and a thermoplastic resin, the resin composite material containing 5 parts by weight or more of the carbon material per 100 parts by weight of the thermoplastic resin and having a breaking strain of 50% or more as measured according to JIS K 7161.

Carbon material, resin composite material, and method for producing said carbon material and resin composite material

Provided is a resin composite material in which a carbon material with a graphene structure is dispersed in a synthetic resin and which has a high mechanical strength and a low linear expansion coefficient and a method for producing the resin composite material. A resin composite material contains a synthetic resin and a carbon material with a graphene structure dispersed in the synthetic resin, wherein the synthetic resin is grafted onto the carbon material and the grafting ratio thereof onto the carbon material is 5% to 3300% by weight. A method for producing a resin composite material includes the steps of: preparing a resin composite containing a synthetic resin and a carbon material with a graphene structure dispersed in the synthetic resin; and grafting the synthetic resin onto the carbon material concurrently with or after the step of preparing the resin composite.

Resin composite material and method for producing resin composite material

Disclosed herein are: a method for producing a resin composite material in which a carbon material having a graphene structure is dispersed in a synthetic resin and which has high mechanical strength; and a resin composite material obtained by the method. More specifically, disclosed herein are: a method for producing a resin composite material in which a carbon material having a graphene structure is uniformly dispersed in a synthetic resin selected from the group consisting of a crystalline resin and an amorphous resin, the method comprising, when the synthetic resin is a crystalline resin, shear-kneading the crystalline resin and the carbon material with a shear-kneading device at a temperature lower than a melting point of the crystalline resin and, when the synthetic resin is an amorphous resin, shear-kneading the amorphous resin and the carbon material with a shear-kneading device at a temperature close to a Tg of the crystalline resin; and a resin composite material obtained by the production method.

Method for producing resin composite material, and resin composite material

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Osaka, Japan

Kazuhiro Sawa