| 摘要 |
PROBLEM TO BE SOLVED: To provide an acrylonitrile-based precursor for a carbon fiber, capable of preventing the reduction of operating property and heat resistance, exhibiting a good process-passing property in its burning process and capable of improving the productivity of the carbon fiber, a method for producing the same and a suitable oil agent composition for the same. SOLUTION: This oil agent composition for a carbon fiber precursor acrylic fiber consists of 60-80 mass % compound having a specific structure, 12-37 mass % nonionic surfactant showing≤1.0 % residual rate after heating in air at 250°C for 2 hr, 2-4 mass % antistatic agent and 1-3 mass % antioxidant, and the carbon fiber precursor acrylic fiber imparted with 0.1-5.0 mass % oil agent composition are provided. The method for producing the acrylonitrile-based precursor for the carbon fiber is provided by ejecting the solution of the acrylonitrile-based polymer into a coagulation bath for making fibers, washing the fiber yarns with water for removing a solvent, stretching in the bath at the same time with washing or separately to obtain the fiber being a water-swollen state, imparting the emulsion of the oil agent composition and drying to densify the fiber. COPYRIGHT: (C)2005,JPO&NCIPI |
