Fiber fabric and molded article obtainable by molding fiber fabric

Patent metadata

Field	Value
Publication number	US-2016002832-A1
Application number	US-201414770651-A
Country	US
Kind code	A1
Filing date	Feb 7, 2014
Priority date	Feb 28, 2013
Publication date	Jan 7, 2016
Grant date	—

Abstract

Provided is a fiber fabric excellent in high mechanical strength and shapability. The fiber fabric comprising warps and wefts: wherein either one of the warps and the wefts is configured by a polyamide resin fiber composed of a polyamide resin composition, and the other is configured by a continuous carbon fiber; in an arbitrary square area of the fiber fabric, one side of the arbitrary square area is aligned in parallel to the warps, and other one side of the arbitrary square area is aligned in parallel to the wefts, the continuous carbon fiber has an average length 1.1 to 1.6 times longer than the length of a side of the square; the polyamide resin composition contains a polyamide resin in which 50% by mole or more of diamine structural units thereof is derived from xylylenediamine; and wherein the polyamide resin has a number-average molecular weight (Mn) of 6,000 to 30,000, and 0.5 to 5% by mass of the polyamide resin has a molecular weight of 1,000 or smaller.

First claim

1 . A fiber fabric comprising warps and wefts:
wherein either one of the warps and the wefts is configured by a polyamide resin fiber composed of a polyamide resin composition, and the other is configured by a continuous carbon fiber;
in an arbitrary square area of the fiber fabric, one side of the arbitrary square area is aligned in parallel to the warps, and other one side of the arbitrary square area is aligned in parallel to the wefts, the continuous carbon fiber has an average length 1.1 to 1.6 times longer than the length of a side of the square;
the polyamide resin composition contains a polyamide resin in which 50% by mole or more of diamine structural units thereof is derived from xylylenediamine; and
wherein the polyamide resin has a number-average molecular weight (Mn) of 6,000 to 30,000, and 0.5 to 5% by mass of the polyamide resin has a molecular weight of 1,000 or smaller.

2 . The fiber fabric of claim 1 , wherein the polyamide resin fiber has an average length 1.0 to 1.6 times longer than the length of a side of the square.

3 . The fiber fabric of claim 1 , having a weight per unit area of 50 to 1000 g/m2.

4 . The fiber fabric of claim 1 , wherein the polyamide resin contains 0.01 to 1% by mass of a cyclic compound.

5 . The fiber fabric of claim 1 , having a ratio of average fineness of the polyamide resin fiber and average fineness of the continuous carbon fiber (average fineness of polyamide resin fiber/average fineness of continuous carbon fiber) of 20/80 to 80/20.

6 . (canceled)

7 . The fiber fabric of claim 2 , having a weight per unit area of 50 to 1000 g/m2.

8 . The fiber fabric of claim 2 , wherein the polyamide resin contains 0.01 to 1% by mass of a cyclic compound.

9 . The fiber fabric of claim 2 , having a ratio of average fineness of the polyamide resin fiber and average fineness of the continuous carbon fiber (average fineness of polyamide resin fiber/average fineness of continuous carbon fiber) of 20/80 to 80/20.

10 . The fiber fabric of claim 3 , wherein the polyamide resin contains 0.01 to 1% by mass of a cyclic compound.

11 . The fiber fabric of claim 3 , having a ratio of average fineness of the polyamide resin fiber and average fineness of the continuous carbon fiber (average fineness of polyamide resin fiber/average fineness of continuous carbon fiber) of 20/80 to 80/20.

12 . The fiber fabric of claim 4 , having a ratio of average fineness of the polyamide resin fiber and average fineness of the continuous carbon fiber (average fineness of polyamide resin fiber/average fineness of continuous carbon fiber) of 20/80 to 80/20.

13 . The fiber fabric of claim 7 , wherein the polyamide resin contains 0.01 to 1% by mass of a cyclic compound.

14 . The fiber fabric of claim 7 , having a ratio of average fineness of the polyamide resin fiber and average fineness of the continuous carbon fiber (average fineness of polyamide resin fiber/average fineness of continuous carbon fiber) of 20/80 to 80/20.

15 . The fiber fabric of claim 8 , having a ratio of average fineness of the polyamide resin fiber and average fineness of the continuous carbon fiber (average fineness of polyamide resin fiber/average fineness of continuous carbon fiber) of 20/80 to 80/20.

16 . The fiber fabric of claim 13 , having a ratio of average fineness of the polyamide resin fiber and average fineness of the continuous carbon fiber (average fineness of polyamide resin fiber/average fineness of continuous carbon fiber) of 20/80 to 80/20.

17 . A molded article obtainable by molding a fiber fabric described in claim 1 .

18 . A molded article obtainable by molding a fiber fabric described in claim 2 .

19 . A molded article obtainable by molding a fiber fabric described in claim 3 .

20 . A molded article obtainable by molding a fiber fabric described in claim 4 .

21 . A molded article obtainable by molding a fiber fabric described in claim 5 .

Assignees

• Mitsubishi Gas Chemical Co

Inventors

• Matsumoto Nobuhiko
• Mitadera Jun

Classifications

• D10B2331/021

  aromatic polyamides, e.g. aramides · CPC title

• D10B2505/02

  Reinforcing materials; Prepregs · CPC title

• D10B2101/12

  Carbon; Pitch · CPC title

• D10B2331/02

  polyamides (D10B2331/08 takes precedence) · CPC title

• C08G69/265 Primary

  from at least two different diamines or at least two different dicarboxylic acids · CPC title