纺丝原液含量对氨纶丝应力松弛的影响  

Effect of Concentration of Spinning Dope on Stress Relaxation of Spandex

作　　者：游革新[1] 周序霖 曾韬[1] 杨波[2] 周秀文[2] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640 [2]中国工程物理研究院,四川绵阳621000

出　　处：《塑料工业》2017年第6期106-109,59,共5页China Plastics Industry

基　　金：国家自然科学基金项目委员会与中国工程物理研究所联合基金资助--自适应纤维力学松弛机理研究(U143010011)

摘　　要：采用干法纺丝技术制备出五种纺丝原液含量不同的氨纶丝,研究低拉伸率下不同纺丝原液含量对氨纶丝的应力松弛影响,以选择合适的纺丝原液含量制备出应力松弛率较小的氨纶丝。计算和分析五种氨纶丝的应力松弛率和应力松弛速率。结果表明,随着纺丝原液含量的增大,氨纶丝的应力松弛率和应力松弛速率都逐渐减小。利用五元件广义Maxwell模型解释氨纶丝的应力松弛行为,并拟合氨纶丝实际的应力松弛曲线求出五元件模型的五个参数,通过分析纺丝原液含量与弹簧衰变弹性系数、黏壶黏滞系数的关系,可很好地描述五种氨纶丝应力松弛过程的前两个阶段。The effects of different spinning dope concentrations on the stress studied by using dry spinning technique. The stress relaxation rate was calculated relaxation of spandex were by choosing the appropriate spinning solution concentration. The stress relaxation rate and the stress relaxation speed rate of the five kinds of spandex were calculated and analyzed. The results show that the stress relaxation rate and the stress relaxation speed rate of spandex decrease with the increase of the concentration of the spinning solution. The five-element generalized Maxwell model was used to explain the stress relaxation behavior of spandex, and the five parameters of the five-element model were obtained by fitting the actual stress relaxation curve of spandex. By analyzing the concentration of spinning liquid and the coefficient of spring decay elasticity, the relationship can be well described in the first two stages of the five kinds of spandex stress relaxation processes.

关 键 词：氨纶丝 纺丝原液含量 应力松弛 广义Maxwell模型 

分 类 号：TQ342[化学工程—化纤工业]