Abstract: A carbon-fiber-reinforced resin composite material includes: carbon fibers including carbon fiber bundles and a thermoplastic resin, in which (1) a coefficient of variation (CV1) of a total areal weight of the carbon-fiber-reinforced resin composite material is 10% or lower, (2) a coefficient of variation (CV2) of a carbon fiber volume fraction (Vf) in the carbon-fiber-reinforced resin composite material which is defined by Expression (a) is 15% or lower, and (3) a weight average fiber length of the carbon fibers is 1 to 100 mm. Carbon Fiber Volume Fraction (Vf)=100×Volume of Carbon Fibers/(Volume of Carbon Fibers+Volume of Thermoplastic Resin)??Expression (a).

Abstract: There is provided a shaped product made of a fiber-reinforced composite material including reinforcing fibers having an average fiber length of 5 to 100 mm and a thermoplastic resin. In the shaped product, a volume fraction of reinforcing fibers is 5 to 80%, a reference plane (S) and a standing plane (B) inclined at an angle of 45 to 90 degrees with respect to the reference plane are included, a ratio of an area of the standing plane (B) to an area of the reference plane (S) is 0.5 to 100, and in the fiber-reinforced composite material constituting the shaped product, a ratio of a reinforcing fiber bundle (A) including the reinforcing fibers of a critical number of single fiber or more to the total amount of the reinforcing fibers is 20 Vol % or more and 99 Vol % or less.

Abstract: The problem to be solved by the invention is to provide a method for producing a joined body that reduces springback and can maintain high joining strength. The above problem is solved by a method for producing a joined body. The method includes heating a contact expected surface (a) of a molded body (A) containing carbon fibers and a thermoplastic resin, brining the heated contact expected surface (a) into contact with a contact expected surface (b) of a molded body (B) containing a thermoplastic resin; and joining the molded body (A) and the molded body (B). Contact surfaces (c) formed by contacting the contact expected surface (a) with the contact expected surface (b) includes a three-dimensional curved surface. The contact expected surface (a) is heated by using an infrared radiation mechanism capable of selectively infrared radiating the contact expected surface (a).

Abstract: The present invention provides a method for manufacturing a shaped product constituted by a fiber-reinforced composite material including reinforcing fibers and a thermoplastic resin. The shaped product maintains isotropy of the fibers to the end thereof even if press-molded under conditions in which charge ratio of a prepreg to a die is low. Specifically, the method includes using a specific prepreg obtained by impregnating the reinforcing fibers with thermoplastic resin, and molding-processing the prepreg under specific conditions.

Abstract: A carbon-fiber-reinforced resin composite material includes: carbon fibers including carbon fiber bundles and a thermoplastic resin, in which (1) a coefficient of variation (CV1) of a total areal weight of the carbon-fiber-reinforced resin composite material is 10% or lower, (2) a coefficient of variation (CV2) of a carbon fiber volume fraction (Vf) in the carbon-fiber-reinforced resin composite material which is defined by Expression (a) is 15% or lower, and (3) a weight average fiber length of the carbon fibers is 1 to 100 mm. Carbon Fiber Volume Fraction (Vf)=100×Volume of Carbon Fibers/(Volume of Carbon Fibers+Volume of Thermoplastic Resin) . . . Expression (a).

Abstract: There is provided a shaped product made of a fiber-reinforced composite material including reinforcing fibers having an average length of 5 mm or more and 100 mm or less and a thermoplastic resin, in which a volume fraction of reinforcing fibers (Vf=100×volume of reinforcing fibers/(volume of reinforcing fibers+volume of thermoplastic resin)) is 5 to 80%, grains are formed on a surface of the shaped product, and a ratio of a reinforcing fiber bundle (A) including the reinforcing fibers of a critical number of single fiber or more, the critical number defined by Formula (1), to the total amount of the reinforcing fibers is 20 Vol % or more and 99 Vol % or less: Critical number of single fiber=600/D??(1) (wherein D is an average fiber diameter (?m) of single reinforcing fiber).

Abstract: This method for manufacturing a shaped product is characterized in preparing a specific random mat including a thermoplastic resin and carbon fiber bundles having an average fiber length of 5-100 mm, impregnating a thermoplastic resin into the random mat, pressing the random mat in a metal mold in a range of 0.1-20 MPa, and then taking out the random mat from the metal mold.

Abstract: The present invention provides a method for manufacturing a shaped product constituted by a fiber-reinforced composite material including reinforcing fibers and a thermoplastic resin. The shaped product maintains isotropy of the fibers to the end thereof even if press-molded under conditions in which charge ratio of a prepreg to a die is low. Specifically, the method includes using a specific prepreg obtained by impregnating the reinforcing fibers with thermoplastic resin, and molding-processing the prepreg under specific conditions.

Abstract: A method for manufacturing a shaped product includes 1) heating at least three prepregs having a thickness of 0.3 mm to 5.0 mm each including reinforcing fibers having an average fiber length of 3 to 100 mm and a thermoplastic resin, 2) arranging those prepregs so as to constitute at least two layers including P layer and Q layer which are in contact with each other, and 3) then pressing those layers to manufacture one shaped product. A prepreg (p1) in the P layer and a prepreg (q1) in the Q layer are arranged such that at least a part thereof overlaps with each other, and two or more prepregs in the same layer are arranged so as not to be in contact with each other.

Abstract: The present invention provides a method for manufacturing a shaped product constituted by a fiber-reinforced composite material including reinforcing fibers and a thermoplastic resin, the shaped product with maintained isotropy of the fibers to the end thereof even if press-molded under conditions in which charge ratio of a prepreg to a die is low. Specifically, the method includes using a specific prepreg obtained by impregnating the reinforcing fibers with thermoplastic resin, and molding-processing the prepreg under specific conditions.

Abstract: There is provided a shaped product made of a fiber-reinforced composite material including reinforcing fibers having an average length of 5 mm or more and 100 mm or less and a thermoplastic resin, in which a volume fraction of reinforcing fibers (Vf=100×volume of reinforcing fibers/(volume of reinforcing fibers+volume of thermoplastic resin)) is 5 to 80%, grains are formed on a surface of the shaped product, and a ratio of a reinforcing fiber bundle (A) including the reinforcing fibers of a critical number of single fiber or more, the critical number defined by Formula (1), to the total amount of the reinforcing fibers is 20 Vol % or more and 99 Vol % or less: Critical number of single fiber=600/D??(1) (wherein D is an average fiber diameter (?m) of single reinforcing fiber).

Abstract: There is provided a shaped product made of a fiber-reinforced composite material including reinforcing fibers having an average fiber length of 5 to 100 mm and a thermoplastic resin. In the shaped product, a volume fraction of reinforcing fibers is 5 to 80%, a reference plane (S) and a standing plane (B) inclined at an angle of 45 to 90 degrees with respect to the reference plane are included, a ratio of an area of the standing plane (B) to an area of the reference plane (S) is 0.5 to 100, and in the fiber-reinforced composite material constituting the shaped product, a ratio of a reinforcing fiber bundle (A) including the reinforcing fibers of a critical number of single fiber or more to the total amount of the reinforcing fibers is 20 Vol % or more and 99 Vol % or less.

Abstract: This production method for a composite shaped product having an undercut portion is able to readily manufacture a composite shaped product having a complicated shape having an undercut portion, by including: a step (i) of forming an impregnated precursor by heating and pressurizing a non-impregnated precursor including carbon fibers with an average fiber length of 1 to 100 mm and a thermoplastic resin; a step (ii) of heating the impregnated precursor at the melting point of the thermoplastic resin or more; a step (iii) of arranging the heated impregnated precursor into a mold having an undercut structure; a step (iv) of clamping the undercut structure after or simultaneously being operated and pressurizing the impregnated precursor; and a step (v) of unclamped the mold, re-operating the undercut structure and taking out the composite shaped material from the unclamped mold.

Abstract: This method for manufacturing a shaped product is characterized in preparing a specific random mat including a thermoplastic resin and carbon fiber bundles having an average fiber length of 5-100 mm, impregnating a thermoplastic resin into the random mat, pressing the random mat in a metal mold in a range of 0.1-20 MPa, and then taking out the random mat from the metal mold.

Abstract: The present invention provides a method for manufacturing a shaped product constituted by a fiber-reinforced composite material including reinforcing fibers and a thermoplastic resin, the shaped product with maintained isotropy of the fibers to the end thereof even if press-molded under conditions in which charge ratio of a prepreg to a die is low. Specifically, the method includes using a specific prepreg obtained by impregnating the reinforcing fibers with thermoplastic resin, and molding-processing the prepreg under specific conditions.

Abstract: A molded product, including a fiber-reinforced composite material containing reinforcing fibers having an average fiber length of 5 mm to 100 mm and a thermoplastic resin, wherein the molded product has thickness gradient, an amount of the thermoplastic resin is 10 to 1,000 parts by weight per 100 parts by weight of thee reinforcing fibers, and the reinforcing fibers have a fiber areal weight of from 25 g/m2 to 3,000 g/m2 and are substantially two-dimensionally randomly oriented.

Abstract: A novel method of producing charcoal. The method of producing charcoal comprises treating an organic material with iodine followed by the carbonization treatment. The organic material is desirably an organic material stemming from the biomass. The treatment with iodine is desirably conducted by bringing an iodine vapor into contact with the organic material. Further, the treatment with iodine is desirably conducted by heating a container which contains the organic material and iodine. The temperature in the treatment with iodine is desirably in a range of not lower than 50° C. but not higher than a decomposition temperature of the organic material. Further, the carbonization treatment is desirably a heat treatment conducted in an inert gas atmosphere or in vacuum.

Abstract: The invention provides a pharmaceutical composition containing, as the active ingredient thereof, a prostaglandin-I2 agonist, therefore providing a remedy or preventive for various disorders resulting from tissue fibrogenesis.