| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a carbon fiber precursor acrylic fiber bundle capable of attaining high operation stability and improving mechanical characteristics of a resultant carbon fiber bundle even when the number of mono filaments is large. <P>SOLUTION: A carbon fiber precursor acrylic fiber bundle of the present invention has total fineness of 30000 Dtex or more, has a crystal region size along a direction perpendicular to a lengthwise direction of 13 nm or more, and has a concentration of a solvent included therein of 0.02 to 0.1 mass%. <P>COPYRIGHT: (C)2013,JPO&INPIT |
