Patent ID: 9284436
Filing Date: 2016-03-15
CPC Classification: B29C,B29K,C08J,C08K,C08L,Y10T

Claim Text:
1. A material for molding comprising: carbon fiber bundles including carbon fibers and at least one impregnation aid in an amount of 3 to 15 parts by mass based on 100 parts by mass of the carbon fibers, wherein the at least one impregnation aid is a p-hydroxybenzoic acid alkyl ester in which an alkyl group thereof has 14 or more carbon atoms, the at least one impregnation aid satisfying the following requirements 1 to 3; and a thermoplastic polyamide in an amount of 50 to 2000 parts by mass based on 100 parts by mass of the carbon fibers, the thermoplastic polyamide adhered to the carbon fiber bundles: Requirement 1: liquid at 280° C. has a viscosity of 10 Pa·s or less; Requirement 2: a reduction ratio in a glass transition temperature (ΔTg) of larger than 0.2 (° C./%), the reduction ratio in glass transition temperature (ΔTg) being defined by the following expression (A) including a glass transition temperature Tg wherein the content of impregnation aid (%) is defined by the following expression (B): Requirement 3: a boiling point under normal pressure is 340° C. or more and a heating loss at 300° C. under a nitrogen atmosphere is 2%/minute or less.