Method for manufacturing fiber-reinforced plastic
AssigneeMitsubishi Chemical Corporation
InventorsTsuneo Takano, Takashi Honma, Satoshi Kaji
Life of this patent
Estimating the term…
Abstract
A method for producing a fiber reinforced plastic can suppress with which wrinkling or bridging in a convex surface or a concave surface having a large curvature at the same time even if the fiber reinforced plastic has a complicated three-dimensional shape. Such methods for producing a fiber reinforced plastic may involve shaping a prepreg sheet in which continuous fibers are impregnated with a resin material into a three-dimensional shape to produce a fiber reinforced plastic (a); wherein at least a portion of the continuous fibers in an area (X) of the prepreg sheet corresponding to an area (X′) in which the fiber reinforced plastic (a) is shear-deformed is bent in an in-plane direction in advance.
Claims12
A method for producing a fiber reinforced plastic, the method comprising:
- shaping a prepreg sheet in which continuous fibers are impregnated with a resin material into a three-dimensional shape to produce the fiber reinforced plastic (a), wherein at least a portion of the continuous fibers in an area (X) of the prepreg sheet corresponding to an area (X′) in which the fiber reinforced plastic (a) is shear-deformed is bent in an in-plane direction in advance;
- and
- producing the prepreg sheet such that at least a part of the area (X) is in the same state as a state of being shear-deformed in the same direction as a direction of shear deformation in the area (X′), and
- shear-deforming at least a part of the area (X) by a shear deformer having a plurality of fixing points that fix the prepreg sheet and are arranged along the in-plane direction of the prepreg sheet, and capable of moving the fixing points in the in-plane direction of the prepreg sheet;
- and
- shaping the prepreg sheet simultaneously with shear deformation of the prepreg sheet or after shear deformation of the prepreg sheet, and
- wherein the shear deformer comprises the plurality of fixing points that fix the prepreg sheet and are arranged along the in-plane direction of the prepreg sheet so as to be positioned at lattice points of a tetragonal lattice, and capable of moving the fixing points in the in-plane direction of the prepreg sheet so that a unit lattice connecting the fixing points is shear-deformed.
A method for producing a fiber reinforced plastic, the method comprising:
- shaping a reinforcing fiber base material into a three-dimensional shape to obtain a preform (b);
- impregnating the preform (b) with a resin material;
- solidifying the preform (b) impregnated with a resin material to produce the fiber reinforced plastic (a);
- producing the reinforcing fiber base material so that at least a part of an area (Y) is in the same state as a state of being shear-deformed in the same direction as a direction of shear deformation in an area (Y′)
- wherein at least a part of the area (Y) of the reinforcing fiber base material corresponding to the area (Y′) in which the preform (b) is shear-deformed is bent in the in-plane direction in advance, and
- shear-deforming at least a part of the area (Y) by a shear deformer having a plurality of fixing points that fix the reinforcing fiber base material and are arranged along the in-plane direction of the reinforcing fiber base material, and capable of moving the fixing points in the in-plane direction of the reinforcing fiber base material;
- and
- shaping the reinforcing fiber base material simultaneously with shear deformation of the reinforcing fiber base material or after shear deformation of the reinforcing fiber base material, and
- wherein the shear deformer comprises the plurality of fixing points that fix the reinforcing fiber base material and are arranged along the in-plane direction of the reinforcing fiber base material so as to be positioned at lattice points of a tetragonal lattice, and capable of moving the fixing points in the in-plane direction of the reinforcing fiber base material so that a unit lattice connecting the fixing points is shear-deformed.
Dependencies are inferred from the claim text.