CARBON FIBER, PROCESS FOR PRODUCTION THEREOF, PREPREGS, AND GOLF CLUB SHAFTS

Title:

CARBON FIBER, PROCESS FOR PRODUCTION THEREOF, PREPREGS, AND GOLF CLUB SHAFTS

Document Type and Number:

WIPO Patent Application WO/2005/087992

Kind Code:

A1

Abstract:

A carbon fiber tow composed of many carbon filaments and having a strand tensile strength of 3.8 to 5.5 GPa, a strand tensile modulus of 180 to 220 GPa and a carbon crystal size (Lc) of 13 to 18 Å. This carbon fiber tow can be produced by subjecting a precursor fiber tow composed of many polyacrylonitrile filaments which have a lightness difference (&Dgr L) of 50 or below and fineness of 1.1 to 1.7dtex to oxidative stabilization and subjecting the stabilized fiber tow to carbonization with the maximum temperature within the range of 1,100 to 1,300&ring C in an inert atmosphere while raising the temperature from 1,000&ring C to the maximum temperature at a temperature rise rate of 100 to 2,000&ring C/min.

Inventors:

ENDO MAKOTO (JP)
TAKIYAMA HIROYUKI (JP)
ANDOU NOBUYA (JP)

Application Number:

PCT/JP2005/003461

Publication Date:

September 22, 2005

Filing Date:

March 02, 2005

Export Citation:

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Assignee:

TORAY INDUSTRIES (JP)
ENDO MAKOTO (JP)
TAKIYAMA HIROYUKI (JP)
ANDOU NOBUYA (JP)

International Classes:

A63B53/10; D01F9/22; D04H1/00; D04H1/42; D04H3/00; A63B102/32; (IPC1-7): D01F9/22; A63B53/10

Foreign References:

JPH03180514A	1991-08-06
JP2002339170A	2002-11-27
JPH11217734A	1999-08-10
JPS62265329A	1987-11-18
JPH09277389A	1997-10-28
JP2003145632A	2003-05-20
JP2001054602A	2001-02-27
JP2003053582A	2003-02-26
JP2000263653A	2000-09-26

Attorney, Agent or Firm:

Iwami, Tomonori c/o Intellectual Property Department (TORAY INDUSTRIES INC., 1-1, Sonoyama 1-chom, Otsu-shi Shiga 58, JP)

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