Fiber-reinforced resin molding material and molded article
AssigneeToray Industries, Inc.
InventorsYasukazu Ono, Takafumi Hashimoto, Akira Shimoyama, Tetsuya Motohashi
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Abstract
A fiber-reinforced resin molding material is obtained by impregnating a chopped fiber bundle with a matrix resin, has a layered structure including three or more layers in a thickness direction thereof, and satisfies the relationships Lao>Lam and Wao>Wam, where Lao and Wao represent the number average fiber length and the number average fiber bundle width, respectively, of the chopped fiber bundle in the outermost layer thereof, and Lam and Wam represent the number average fiber length and the number average fiber bundle width, respectively, of the chopped fiber bundle in a middle layer thereof.
Claims12
A fiber-reinforced resin molding material [C] of a chopped fiber bundle [A] impregnated with a matrix resin [B], having a layered structure including three or more layers in a thickness direction of the fiber-reinforced resin molding material [C] and satisfying Formula (1) and Formula (3), wherein Lao and Tao are respectively a number average fiber length and a number-average fiber bundle thickness of a chopped fiber bundle [Ao] in an outermost layer, Lam and Tam are respectively a number average fiber length and a number-average fiber bundle thickness of a chopped fiber bundle [Am] in a middle layer,
- Lao>Lam (1)
- Tao>Tam (3).
A fiber-reinforced resin molding material [C] of a chopped fiber bundle [ A] impregnated with a matrix resin [B], having a layered structure including three or more layers in a thickness direction of the fiber-reinforced resin molding material [C] and satisfying Formula (1) and Formula (2), wherein Lao and Wao are respectively a number average fiber length and a number-average fiber bundle width of a chopped fiber bundle [Ao] in an outermost layer, Lam and Wam are respectively a number average fiber length and a number-average fiber bundle width of a chopped fiber bundle [Am] in a middle layer, further satisfying Formula (4), wherein the Lao is the number average fiber length of the chopped fiber bundle [Ao] in the outermost layer and the Lam is the number average fiber length of the chopped fiber bundle [Am] in the middle layer,
- Lao>Lam (1)
- Wao>Wam (2)
- 1.05<Lao/Lam<1.30 (4).
Dependencies are inferred from the claim text.