Title:
PRODUCTION METHOD OF CARBON FIBER
Document Type and Number:
Japanese Patent JP2019007129
Kind Code:
A
Abstract:
To provide a production method of a carbon fiber, enabling low-cost production of a high-quality carbon fiber by conducting flame-resistant treatment in a shorter time than the conventional method.SOLUTION: A PAN-based precursor fiber is modified in a liquid phase containing a thiolate-based compound and an oxidant containing nitrogen atom to produce a PAN-based flame-resistant fiber. The PAN-based flame-resistant fiber obtained in the production method is heat-treated at 300°C or over and 3000°C or under to give a carbon fiber having excellent mechanical strength. The thiolate-based compound is preferably a compound represented by general formula (1). In formula (1), M shows an alkali metal, R is selected from a group consisting of a hydrocarbon group or an aryl group.SELECTED DRAWING: None
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Inventors:
NAKAYAMA HIKARU
YAMADA TERUYUKI
KOTANI TOMOYUKI
SAKASHITA KEIICHI
YAMADA TERUYUKI
KOTANI TOMOYUKI
SAKASHITA KEIICHI
Application Number:
JP2018199283A
Publication Date:
January 17, 2019
Filing Date:
October 23, 2018
Export Citation:
Assignee:
MITSUBISHI CHEM CORP
International Classes:
D01F9/22; D01F1/10; D01F6/18
Domestic Patent References:
| JP2007051392A | 2007-03-01 | |||
| JP2008202208A | 2008-09-04 | |||
| JPS4948925A | 1974-05-11 | |||
| JPH05156523A | 1993-06-22 |
Foreign References:
| WO2007018136A1 | 2007-02-15 |
Other References:
MATERIALS CHEMISTRY AND PHYSICS. 2006, VOL.99, NO.2-3, P.388-393, JPN6019026620, ISSN: 0004072984