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US 7,931,958 B2Granted
Prepreg and carbon fiber reinforced composite materials
AssigneeToray Industries, Inc.
InventorsNobuyuki Arai, Norimitsu Natsume, Kenichi Yoshioka, Junko Kawasaki, Hiroshi Takezaki
Life of this patent
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Abstract
A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2). (1) a thermoplastic resin particle or fiber [C] and a conductive particle or fiber [D] are contained, and weight ratio expressed by [compounding amount of [C] (parts by weight)]/[compounding amount of [D] (parts by weight)] is 1 to 1000. (2) a conductive particle or fiber of which thermoplastic resin nucleus or core is coated with a conductive substance [E] is contained.
Claims7
A prepreg comprising:
- a carbon fiber A;
- a thermosetting resin B;
- a thermoplastic resin particle C;
- and a conductive particle D, wherein a weight ratio expressed by C content (parts by weight)/D content (parts by weight) is 1 to 1000, and wherein 90 to 100 wt % of each of the thermoplastic resin particle C and the conductive particle D is localized to be within a 20% depth range from both surfaces of the prepreg in a thickness direction.
1 more element
Dependencies are inferred from the claim text.