| 摘要 |
<p>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/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; 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 ˚C, a fluorine-containing compound, a siloxane, a nitrate, and a nitride; 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˚C and lower than 2000 ˚C in an inert atmosphere.</p> |
