Title:
HEAT-RESISTANT HIGH-TOUGHNESS FIBER, PRODUCTION METHOD THEREFOR, AND HEAT-RESISTANT HIGH-TOUGHNESS FILM
Document Type and Number:
WIPO Patent Application WO/2022/181558
Kind Code:
A1
Abstract:
Provided are: heat-resistant high-toughness fibers and film that have excellent balance of physical properties regarding strength, degree of elongation, and heat resistance. The heat-resistant high-toughness fibers according to the present invention are characterized by having a breaking strength of 3.5-15 cN/dtex, an elongation at break of 5-30%, and a melting point of at least 290°C. A production method for heat-resistant high-toughness fibers according to the present invention is characterized by using, in a yarn material, a copolymerized aramid polymer containing at least three types of monomeric units selected from the group consisting of meta-phenylenediamine, para-phenylenediamine, isophthaloyl, and terephthaloyl.
Inventors:
SATOH YUSUKE (JP)
ZHOU ZONGYANG (JP)
ZHOU ZONGYANG (JP)
Application Number:
PCT/JP2022/007028
Publication Date:
September 01, 2022
Filing Date:
February 21, 2022
Export Citation:
Assignee:
TEIJIN LTD (JP)
International Classes:
D01F6/80; C08J5/18; D01F1/09
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Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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