公开(公告)号：US20240166840A1

公开(公告)日：2024-05-23

申请号：US17773119

申请日：2020-11-04

Applicant: TORAY INDUSTRIES, INC.

Inventor： Haruki OKUDA ,  Jun WATANABE ,  Fumihiko TANAKA

IPC: C08K3/04 ,  C08K7/06

CPC classification number: C08K3/04 ,  C08K7/06

Abstract: The present invention aims to provide a resin composition that is high in moldability in producing a member of a complicated shape by injection molding and also high in flexural modulus and impact property. A molding material including a resin composition containing a thermoplastic resin and carbon fibers, wherein the carbon fibers have substantially the same length as the length of the molding material; the twist angle of the carbon fiber surface layer is 2.0° to 30.5°; the core ratio A/(A+B) is 0.1 to 0.5 where A is the areal fraction of the core portion containing carbon fibers and B is the areal fraction of the remaining portion, that is, the sheath portion, in a cross section perpendicular to the carbon fiber axis direction in the molding material; and the areal void fraction in a cross section perpendicular to the carbon fiber axis direction in the molding material is 5% or less.

公开(公告)号：US20220282058A1

公开(公告)日：2022-09-08

申请号：US17637912

申请日：2020-08-27

Applicant: TORAY INDUSTRIES, INC.

Inventor： Haruki OKUDA ,  Fumihiko TANAKA ,  Jun WATANABE

IPC: C08K3/04 ,  C08K7/06

Abstract: Provided is a resin composition including carbon fibers and a thermoplastic resin, in which the carbon fibers have a tensile elastic modulus E of 350 to 500 GPa, and the tensile elastic modulus E (GPa) and a loop fracture load A (N) satisfy the relationship of A≥−0.0017×E+1.02. This resin composition not only has a high moldability into a member of a complex shape by injection molding, but also can yield a molded article having excellent flexural modulus and excellent impact characteristics.

公开(公告)号：US20240337048A1

公开(公告)日：2024-10-10

申请号：US18681673

申请日：2022-08-18

Applicant: TORAY INDUSTRIES, INC.

Inventor： Yuki SUGA ,  Fumihiko TANAKA ,  Jun WATANABE

IPC: D01F9/22

CPC classification number: D01F9/22 ,  D10B2101/12 ,  D10B2401/063

Abstract: According to the present invention, a carbon fiber composite material, which has excellent energy absorption and is composed of a carbon fiber having high strength and high elongation, is provided by a production method yielding an excellent production amount. This carbon fiber bundle having a plurality of single fibers has a strand elastic modulus of 260-350 GPa, a strength of 6.5-8.5 GPa, an elongation of at least 1.8%, a filament number of 1,000-9,000, and a total fineness of 0.15-0.35 g/m, wherein the average value of major axis/minor axis ratios in single fiber cross sections is 1.01-1.08, the coefficient of variation is 1-4%, and the skewness is 0.3-1.2.