시아노기가 도입된 파라계 아라미드 섬유의 열처리에 따른 구조와 물성
56권 4호, pp. 242-247,
8월 2019
10.12772/TSE.2019.56.242
PDF
Full-Text
요약
Poly(p-phenylene terephthalamide) (PPTA) and poly(2-cyano-1,4-phenylene
terephthalamide) (CNPPTA)-based aramid copolymers were synthesized using a lowtemperature
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.
통계
2022년 11월부터 누적 집계
동일한 세션일 때 여러 번 접속해도 한 번만 카운트됩니다. 그래프 위에 마우스를 올리면 자세한 수치를 확인하실 수 있습니다.
