6-Amino-2-(4-aminophenyl)-4-phenyl quinoline (QDA) as base diamine and oxydianiline (ODA) as second diamine were copolymerized with terephthaloy1 chloride to make isotropic aromatic polyamide film. Transparent and amorphous films were prepared with different QDA/ODA fractions. In order to orient molecular chains of QDA/ODA films, high temperature zone drawing method was appalied at 250∼400℃ The draw ratio of 4.0 was achieved at a mole fraction of 0.6/0.4 QDA/ODA. Birefringence oi the drawn film showed the value of 0.020∼0.034 and the feed mole ratio of QDA/ODA had a marked influence on the molecular orientation. From the fact that the crystal orientation index of the film drawn at 400℃ was below 0.88, it was supposed that the effect of amorphous orientation is more predominant than that of crystal orientation. Tensile properties of the film increased with are increase in the draw ratio. Also, the maximum tensile modulus of film lip to 24 GPa was achieved by drawing QDA/ODA (6/4) film at 400℃ The amount of the fibrillation of the film was relatively lower than that of films hot drawn at the same drawing temperaturre.

6-amino-2-(4-aminophenyl)-4-phenyl quinoline (QDA )과 oxydianiline (ODA)의 투입 비를 조절하여 terephthaloyl chloride와 공중합한 가용성 방향족 폴리아미드로부터 등방성 필름을 제조하다. QDA/ODA 필름의 분자사슬을 효과적으로 배향시키기 위해 고온 띠연신 방법으로 250∼400℃에서의 1회 띠연신하여, 투입비 6/4로 제조한 필름으로부터 최대연신비 4.0을 얻었다. 연산된 필름들의 복굴절은 0.020∼0.034의 값을 나타내었는데 QDA/ODA의 투입 몰비는 분자배향에 큰 영향을 미쳤다. 400℃에서 최대연신된 필름의 결정배향지수가 0.88 이파인 사실로부터 이 필름들의 배향거동은 결정배향보다는 비결정배향이 우세함이 예측되었다. 필름의 인장성질은 연신비의 증가에 따라 증가하였고 400℃에서 QDA/ODA 6/4인 필름을 연신함에 의해서 최대인 장탄성률이 약 24GPa인 연신필름이 얻어졌다. 필름의 피브릴화 정도는 같은 온도에서 열연신된 필름들의 경우보다 낮았다

Keywords: QDA/ODA film; high-temperature zone drawing; amorphous orientation; fibrillation