| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a precursor fiber for carbon fiber production, scarcely requiring prevention of adhesion of single fiber to each other, single fiber breakage prevention and the like and excellent in process stability, in the carbon fiber production step especially in the flameproofing treatment step. Ž<P>SOLUTION: An acrylic precursor fiber for carbon fiber production is provided by supplying a silicone oil solution, wherein the oil solution adhesion in the precursor fiber is 0.01-0.25 mass%; the maximum shrinkage stress generated in increasing the temperature of the precursor fiber from 25°C to 100°C at 20°C/min is 5.0 mN/30 dtex or less; and the number of single fiber breakages is less than 1.5/m. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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