| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that an oiling agent composition composed mainly of a polymethylsiloxane causes deterioration in operability or industrial productivity and to solve the problem that an oiling agent composition which is reduced in content causes deterioration in fusion preventing properties, collecting properties of a precursor fiber bundle and mechanical characteristics of a carbon fiber bundle.SOLUTION: There is provided an oiling agent composition for a carbon fiber precursor acrylic fiber which comprises two or more types of polymethylsiloxanes and in which the following expression (1) is established between one of the two types: &eegr;/&eegr;≥5 (&eegr;represents a viscosity of a polymethylsiloxane having a higher viscosity and &eegr;represents a viscosity of a polymethylsiloxane having a lower viscosity [mm/s at 25°C]) |
