Title:
MANUFACTURING METHOD OF CARBON FIBER BUNDLE
Document Type and Number:
Japanese Patent JP2016166428
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of carbon fiber capable of providing a carbon fiber having suppressed fuzz generation and suppressed winding of a fiber bundle to a roll kneader and further less in fuzz and having high quality during flameproofing treatment of a carbon fiber precursor acryl fiber bundle.SOLUTION: An oil agent composition having residual ratio at 250°C of 95% or more and residual ratio at 800°C or 5% or less is added just before introducing a precursor fiber bundle to flameproofing furnace so that kinetic friction coefficient of a carbon fiber precursor fiber bundle becomes 0.15 or less. A ratio d/dof a major axis dand a minor axis dof a fiber surface of a single fiber of the carbon fiber precursor fiber bundle is preferably 1.2 to 1.8 and maximum value of a depth distribution of a surface wrinkle of the single fiber is preferably 150 nm to 250 nm. An oil agent composition preferably contains at least one of cyclohexane dicarboxylic acid alkyl ester with a specific structure or benzoic acid alkyl ester.SELECTED DRAWING: None
Inventors:
NAGATSUKA SATOSHI
HAMADA MASUTOYO
KAGEYAMA YOSHITAKA
HAMADA MASUTOYO
KAGEYAMA YOSHITAKA
Application Number:
JP2015045446A
Publication Date:
September 15, 2016
Filing Date:
March 09, 2015
Export Citation:
Assignee:
MITSUBISHI RAYON CO
International Classes:
D01F9/22; D01F11/06
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