Structure material and manufacturing method therefor
AssigneeToray Industries, Inc.
InventorsTakashi Fujioka, Yoshiki Takebe, Masato Honma
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Abstract
Provided is a mountain-shaped structure material being excellent in stiffness and lightness. The present invention is a structure material including a resin, reinforced fibers and voids. The structure material has a specific bending stiffness represented as Ec1/3·ρ−1 being 2.5 or more where a bending modulus is Ec and a density is ρ. The structure material has a mountain shape.
Claims10
A structure material having a mountain shape, the structure material comprising a resin, reinforced fibers and voids,
- wherein
- the structure material has a specific bending stiffness represented as Ec1/3·ρ−1 being 2.5 or more where a bending modulus is Ec and a density is ρ;
- and
- a ratio of S1 to S2 (S1/S2) is 0.3 to 1.7, wherein S1 is the area of a vertical plane of a projection of the structure material, and S2 is the area of a triangle formed by a vertex of the vertical plane of a projection of the structure material and the structure material bottom surface.
A method for manufacturing a structure material having a mountain shape, the structure material comprising a resin, reinforced fibers and voids,
- wherein
- the structure material has a specific bending stiffness represented as Ec1/3·ρ−1 being 2.5 or more where a bending modulus is Ec and a density is ρ;
- and
- a ratio of S1 to S2 (S1/S2) is 0.3 to 1.7, wherein S1 is the area of a vertical plane of a projection of the structure material, and S2 is the area of a triangle formed by a vertex of the vertical plane of a projection of the structure material and the structure material bottom surface, and
- wherein the method comprises at least the following steps in this order:
- Step [1]:
- a step of heating a fiber-reinforced plastic (structure precursor) containing at least a resin and reinforced fibers until a tensile strength of the resin becomes 10 MPa or less;
- Step [2]:
- a step of applying pressure in a state where the fiber-reinforced plastic (structure precursor) is heated until the tensile strength of the resin becomes 10 MPa or less to shape a shape;
- and
- Step [3]:
- a step of expanding the fiber-reinforced plastic (structure precursor) by adjusting a thickness thereof.
Dependencies are inferred from the claim text.