FLAME-PROOF FIBER FOR HIGH STRENGTH CARBON FIBER, AND METHOD FOR PRODUCING THE SAME

Title:

FLAME-PROOF FIBER FOR HIGH STRENGTH CARBON FIBER, AND METHOD FOR PRODUCING THE SAME

Document Type and Number:

Japanese Patent JP2010242249

Kind Code:

A

Abstract:

To provide a flame-proof fiber suitable for producing a high strength carbon fiber suitable for a composite material requiring a high composite performance.

The flame-proof fiber obtained by flame retardant treatment of a polyacrylic precursor fiber in an oxidizing atmosphere has a specific gravity of 1.34-1.37, and a cyclization degree (I1620/I2240) measured by a Fourier transform infrared spectrophotometer (FT-IR) of 190-230%, and the ratio (AI value/half value width) of an AI value (aromatization index) to a half value width of a peak intensity in the vicinity of a diffraction angle (2θ) obtained by a wide angle X-ray diffraction measurement of 17° is not more than 7.0.

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Inventors:

OYAMA TARO

Application Number:

JP2009091116A

Publication Date:

October 28, 2010

Filing Date:

April 03, 2009

Export Citation:

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Assignee:

TOHO TENAX CO LTD

International Classes:

D01F9/22

Domestic Patent References:

JP2006152457A	2006-06-15
JP2005113305A	2005-04-28
JP2004232155A	2004-08-19
JPS61167023A	1986-07-28

Foreign References:

WO2008063886A2

2008-05-29

Attorney, Agent or Firm:

Maeda Junhiro

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