한국섬유공학회지 (Textile Science and Engineering)

  • 제56권4호
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  • Pages.242-247
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  • 2019
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  • 1225-1089(pISSN)
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  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
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시아노기가 도입된 파라계 아라미드 섬유의 열처리에 따른 구조와 물성

Structure and Properties of Heat-treated p-Aramid Fibers Containing Cyano Groups

  • 이일재 (충남대학교 유기소재.섬유시스템공학과) ;
  • 장은지 (충남대학교 유기소재.섬유시스템공학과) ;
  • 차화현 (충남대학교 유기소재.섬유시스템공학과) ;
  • 백두현 (충남대학교 유기소재.섬유시스템공학과)
  • Lee, Il Jae (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Jang, Eun Ji (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Cha, Hwa Hyun (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Baik, Doo Hyun (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University)
  • 투고 : 2019.08.01
  • 심사 : 2019.08.23
  • 발행 : 2019.08.31
⟨ 이전 논문 다음 논문 ⟩

초록

Poly(p-phenylene terephthalamide) (PPTA) and poly(2-cyano-1,4-phenylene terephthalamide) (CNPPTA)-based aramid copolymers were synthesized using a low-temperature polycondensation reaction between terephthaloyl chloride; 2-cyano-1,4-phenylene diamine, and/or 1,4-phenylene diamine in N,N-dimethylacetamide (DMAc). The aramid homopolymer and copolymers were dry-jet wet spun from the spinning dopes, which consisted of 13 wt% polymer and DMAc. Both the tensile strength and tensile modulus of the spun aramid fibers containing 60 mol% of 2-cyano-1,4-phenylene diamine were found to be enhanced by heat treatment. Wide-angle x-ray diffraction analysis revealed that crystallinity and crystal orientation were increased by heat treatment, which resulted in increased tensile strength and modulus. The effects of heat treatment on the tensile properties of aramid fibers have been studied by the concept of structure-property relations.

키워드

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