Joined body
AssigneeTeijin Limited
InventorsTakumi Kato, Kiyoshi Saito
Life of this patent
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Abstract
A composite shaped product of the present invention is a joined body which is excellent in shock resistance, and which includes shaped products (B1) and (B2) which contain a carbon fiber and a thermoplastic resin, in which the shaped products (B1) and (B2) are disposed on both sides of a composite substrate (A) that contains a continuous fiber such as a polyester fiber and a thermoplastic resin so that the composite substrate (A) is interposed between the shaped products (B1) and (B2), and the shaped products (B1) and (B2) are heat-welded to each other at a joining portion (C) through a through hole (D1) of the composite substrate (A).
Claims11
A joined body comprising:
- a joining portion (C) constituted by a shaped product (B1), a composite substrate (A), and a shaped product (B2) which are laminated in this order,
- wherein the composite substrate (A) contains a plurality of multifilaments of an organic material and a thermoplastic resin, and the shaped products (B1) and (B2) each contain carbon fiber and a resin, and
- wherein
- (i) the composite substrate (A) includes:
- one impregnation portion in which a space between the multifilaments is impregnated with the thermoplastic resin and in which an impregnation rate of the thermoplastic resin in the space between the multifilaments is in a range of 90% to 100% and another impregnation portion in which an inside of a multifilament is impregnated with the thermoplastic resin and in which an impregnation rate in the inside of the multifilament is in a range of 0 to 50%,
- (ii) the composite substrate (A) has a penetration portion (D) which penetrates the composite substrate (A) in a thickness direction,
- (iii) the shaped products (B1) and (B2) are contacted with and fixed through the penetration portion (D) of the composite substrate (A), and
- (iv) the multifilaments are twisted fiber cords in which two primary twisted fibers are piled and a final twist is plied to the two primary twisted fibers.
A joined body comprising:
- a joining portion (C) constituted by a shaped product (B1), a composite substrate (A), and a shaped product (B2) which are laminated in this order,
- wherein the composite substrate (A) contains a plurality of multifilaments of an organic material and a thermoplastic resin, and the shaped products (B1) and (B2) each contain carbon fiber and a resin, and
- wherein
- (i) the composite substrate (A) includes:
- one impregnation portion in which a space between the multifilaments is impregnated with the thermoplastic resin and in which an impregnation rate of the thermoplastic resin in the space between the multifilaments is in a range of 90% to 100% and another impregnation portion in which an inside of a multifilament is impregnated with the thermoplastic resin and in which an impregnation rate in the inside of the multifilament is in a range of 0 to 50%,
- (ii) the composite substrate (A) has a through hole (D1) which penetrates the composite substrate (A) in a thickness direction,
- (iii) the shaped products (B1) and (B2) are fixed by heat welding through the through hole (D1) of the composite substrate (A),
- (iv) the multifilaments are twisted fiber cords in which two primary twisted fibers are piled and a final twist is piled plied to the two primary twisted fibers, and
- (v) at least one of the shaped products (B1) and (B2) has a protrusion (E) on a surface thereof, and the protrusion (E) is disposed in the through hole (D1).
Dependencies are inferred from the claim text.