Title:
HIGHLY FUNCTIONAL COPOLYMERIZED ARAMID FIBER AND METHOD FOR PREPARING SAME
Document Type and Number:
WIPO Patent Application WO/2019/013504
Kind Code:
A3
Abstract:
A highly functional copolymerized aramid fiber according to the present invention contains a benzene ring substituted with a halogen atom in a chemical formula of minimum units constituting a molecular chain. The highly functional copolymerized aramid fiber is prepared by adding terephthaloyl dichloride, having the same molar amount as an aromatic diamine, to an organic solvent in which the aromatic diamine containing the benzene ring substituted with the halogen atom in the chemical formula is dissolved so as to trigger a reaction; preparing a copolymerized solution which has a dissolved copolymerized aramid polymer containing the benzene ring substituted with the halogen atom in the chemical formula of minimum units constituting the molecular chain; and then spinning, solidifying, washing and drying the polymerized solution. Since the present invention contains the benzene ring substituted with the halogen atom in the chemical formula of minimum units constituting the molecular chain, adhesiveness to a matrix resin and the elastic modulus are greatly improved when preparing a fiber and resin composite material; elongation is greatly improved when 3,4'-diaminodiphenyl of the formula (III) is additionally used as another aromatic diamine; and solubility of the copolymerized aramid polymer in the organic solvent is excellent, such that sulfuric acid is not needed to prepare a spinning solution.
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Inventors:
LEE JAE YOUNG (KR)
PARK YOUNG CHEOL (KR)
GU NAM DAE (KR)
PARK YOUNG CHEOL (KR)
GU NAM DAE (KR)
Application Number:
PCT/KR2018/007735
Publication Date:
March 07, 2019
Filing Date:
July 09, 2018
Export Citation:
Assignee:
KOLON INC (KR)
International Classes:
D01F6/80; D01D10/06
Foreign References:
| KR20130063724A | 2013-06-17 | |||
| KR20130075196A | 2013-07-05 | |||
| KR20140134031A | 2014-11-21 | |||
| JP2012167387A | 2012-09-06 | |||
| KR20180093182A | 2018-08-21 |
Other References:
YU , SEOUNG-JUN: "Preparation and characterization of organically soluble para-aramids and their nanocomposite materials", THESIS, 1 January 2007 (2007-01-01), Changnam National University
Attorney, Agent or Firm:
CHO, Hwal-Rai (KR)
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