FLAME−RESISTANT FIBER MATERIAL, CARBON FIBER MATERIAL, GRAPHITE FIBER MATERIAL AND METHOD FOR PRODUCTION THEREOF

Title:

FLAME−RESISTANT FIBER MATERIAL, CARBON FIBER MATERIAL, GRAPHITE FIBER MATERIAL AND METHOD FOR PRODUCTION THEREOF

Document Type and Number:

WIPO Patent Application WO/2002/095100

Kind Code:

A1

Abstract:

A flame−resistant fiber material which has an average oxygen concentration in the interior of the fiber of 0.07 to 0.17 as measured by the elemental analysis−oxygen analysis method, an average survival rate for nitrile groups of 0 to 40 % as measured by the infrared spectroscopy, and a ratio (O1&sol O2) of an average oxygen concentration (O1) of the surface of the fiber to an average oxygen concentration (O2) of a frozen and pulverized fiber, as measured by the X−ray photoelectron spectroscopy, of 1.8 to 4.0&semi a method for producing the flame−resistant fiber material which comprises subjecting an acrylic fiber material to a treatment for enhancing flame resistance in the presence of one or more compounds of an organic compound except an amine at 180 to 300 &ring C, a fluorine−containing compound, a siloxane, a nitrate, and a nitride&semi and a method for producing a carbon fiber material which comprises subjecting the above flame−resistant fiber to a carbonization treatment at a temperature not lower than 300&ring C and lower than 2000 &ring C in an inert atmosphere.

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Inventors:

NAKAYAMA ISAO (JP)
HIGUCHI TETSUNORI (JP)
ISE MASAFUMI (JP)
ISHIDA TOMIHIRO (JP)
YAMAOKA KOICHI (JP)

Application Number:

PCT/JP2002/004994

Publication Date:

November 28, 2002

Filing Date:

May 23, 2002

Export Citation:

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Assignee:

TORAY INDUSTRIES (JP)
NAKAYAMA ISAO (JP)
HIGUCHI TETSUNORI (JP)
ISE MASAFUMI (JP)
ISHIDA TOMIHIRO (JP)
YAMAOKA KOICHI (JP)

International Classes:

D01F9/22; (IPC1-7): D01F9/22

Foreign References:

US4259307A	1981-03-31
GB1540905A	1979-02-21
JPS5473999A	1979-06-13
JPS61167020A	1986-07-28
JPS4737214B1	1972-09-19

Attorney, Agent or Firm:

Kagawa, Mikio c/o Intellectual Property Department (TOEY INDUSTRIES INC., 8-1, Mihama 1-chom, Urayasu-shi Chiba, JP)

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