Abstract:
According to one example of the present invention, there is provided a composite material for cold pressing including: carbon fibers that are unidirectional continuous fibers; and a thermoplastic resin, wherein the composite material has a thickness of 0.3 mm or more, when the composite material is observed from a direction perpendicular to a continuous fiber direction, a cross section of the carbon fibers included in the composite material satisfies the following specific Expressions (1), (2) and (3): n1/N≤0.1 Expression (1), p
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:
According to one example of the present invention, there is provided a composite material for cold pressing including: carbon fibers that are unidirectional continuous fibers; and a thermoplastic resin, wherein the composite material has a thickness of 0.3 mm or more, when the composite material is observed from a direction perpendicular to a continuous fiber direction, a cross section of the carbon fibers included in the composite material satisfies the following specific Expressions (1), (2) and (3): n1/N≦0.1 Expression (1), p
Abstract:
A fiber reinforcing bundle with a sizing agent adhering to the surface thereof is provided, in which the sizing agent contains a thermoplastic resin as a main component and an emulsion or a dispersion, and in which a melt viscosity of a solid content of the sizing agent at 150° C. and at a shear rate of 10 s−1 is 50 to 300 Pa·s; and a method for producing the fiber reinforcing bundle. Preferably, the sizing agent contains a water-soluble polymer, the sizing agent contains a hardly water-soluble polymer, and the reinforcing fiber bundle is a carbon fiber bundle.
Abstract:
According to one example of the present invention, there is provided a composite material for cold pressing including: carbon fibers that are unidirectional continuous fibers; and a thermoplastic resin, wherein the composite material has a thickness of 0.3 mm or more, when the composite material is observed from a direction perpendicular to a continuous fiber direction, a cross section of the carbon fibers included in the composite material satisfies the following specific Expressions (1), (2) and (3): n1/N≦0.1 Expression (1), p
Abstract translation:根据本发明的一个实例,提供了一种用于冷压的复合材料,包括:作为单向连续纤维的碳纤维; 和热塑性树脂,其中复合材料的厚度为0.3mm以上,当从垂直于连续纤维方向的方向观察复合材料时,复合材料中包含的碳纤维的截面满足以下具体 表达式(1),(2)和(3):n 1 / N‰0.1 p <0.01和0.001‰¤1 - dc / dr * Vr / 100 + df * Vf / 100‰0.1