Toray Industries, Inc.

Katholieke Universiteit Leuven

Hidetaka Muramatsu

Noriyuki Hirano

Yoshiki Takebe

Takashi Fujioka

Koshi Kiyama

Joris Baets

Ignace Verpoest

A carbon fiber-reinforced composite material is capable of transmitting an electromagnetic wave in a low frequency band while having an electromagnetic wave shielding performance in a high frequency band. The carbon fiber-reinforced composite material has a ratio SE/SEof a value SE(dB) at 300 kHz to a value SE(dB) at 1 GHz of a magnetic shielding effectiveness measured by a KEC method is 0.50 or less.

Carbon fiber-reinforced composite material, stacked carbon fiber composite material, stacked composite material, case for wireless power supplying device, and case for wireless power receiving device

The present invention relates to a carbon fiber-reinforced polypropylene sheet which comprises carbon fibers having a weight-average fiber length of 1.5 mm to 20 mm and a matrix resin composed of a polypropylene and an acid-modified polypropylene, wherein the carbon fibers are dispersed in the form of single fibers and the interfacial shear strength between the carbon fibers and said matrix resin is 5.50 to 10.5 MPa. Provided is a carbon fiber-reinforced polypropylene sheet for obtaining a molded article having excellent mechanical properties and impact resistance, which carbon fiber-reinforced polypropylene sheet comprises discontinuous carbon fibers and a polypropylene, can be molded into a complex shape and has isotropic mechanical properties.

Carbon fiber-reinforced polypropylene sheet and molded article thereof

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Masaki, Japan

Hidetaka Muramatsu