CARBON FIBER-REINFORCED RESIN COMPOSITE MATERIAL

• Main Authors: OOTSUBO Makoto, ONOUE Shuhei, SONODA Naoaki, NAGAKURA Yasunori
• Format: Patent
• Language: English; French; Japanese
• Published: 29.09.2016
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

A carbon fiber-reinforced resin composite material which comprises carbon fibers containing carbon fiber bundles and a thermoplastic resin, wherein (1) the coefficient of variation (CV1) of the total fiber weight of the carbon fiber-reinforced resin composite material is 10% or less, (2) the coefficient of variation (CV2) of the volume fraction (Vf) of the carbon fibers, which is defined by formula (a), in the carbon fiber-reinforced resin composite material is 15% or less, and (3) the weight average fiber length of the carbon fibers is 1 to 100 mm. Formula (a): volume fraction (Vf) the carbon fibers = 100 × (volume of the carbon fibers)/[(volume of the carbon fibers) + (volume of the thermoplastic resin)] L'invention concerne un matériau composite de résine renforcée de fibres de carbone, qui comprend des fibres de carbone contenant des faisceaux de fibres de carbone et une résine thermoplastique, et dans lequel (1) le coefficient de variation (CV1) du poids total des fibres du matériau composite de résine renforcée de fibres de carbone est inférieur ou égal à 10 %, (2) le coefficient de variation (CV2) de la fraction volumique (Vf) des fibres de carbone, qui est défini par la formule (a), dans le matériau composite de résine renforcée de fibres de carbone est inférieur ou égal à 15 %, et (3) la longueur moyenne en poids des fibres de carbone est comprise entre 1 et 100 mm. Formule (a) : fraction volumique (Vf) des fibres de carbone = 100 × (volume des fibres de carbone)/ [(volume des fibres de carbone) + (volume de la résine thermoplastique)]. 　炭素繊維束を含んだ炭素繊維と熱可塑性樹脂とを含む炭素繊維強化樹脂複合材料であって、（１）炭素繊維強化樹脂複合材料の総目付の変動係数（ＣＶ１）が１０％以下、（２）炭素繊維強化樹脂複合材料の式（ａ）で定義される炭素繊維体積割合（Ｖｆ）の変動係数（ＣＶ２）が１５％以下で、（３）炭素繊維の重量平均繊維長が１～１００ｍｍである、炭素繊維強化樹脂複合材料。　炭素繊維体積割合（Ｖｆ）＝１００×炭素繊維体積／（炭素繊維体積＋熱可塑性樹脂体積）　式（ａ）