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요약정보
阳离子可染聚酯的流变性能 / Rheological properties of cationic dyeable polyester
Resource Type
Academic Journal
Authors
黄铮
;
孙燕琳
;
肖顺立
;
林雪燕
;
包建娜
;
张先明
;
陈文兴
;
HUANG Zheng
;
SUN Yanlin
;
XIAO Shunli
;
LIN Xueyan
;
BAO Jianna
;
ZHANG Xianming
;
CHEN Wenxing
Source
现代纺织技术 / Advanced Textile Technology
. 31(1):104-112
Subject
阳离子可染聚酯
毛细管流变
旋转流变
流变性能
离子聚集
Language
Chinese
ISSN
1009-265X
Online Access
Find it @ DONGA
초록
为研究阳离子可染聚酯流变性能,使用毛细管流变仪以及旋转流变仪对特性黏度相近的普通聚酯及阳离子可染聚酯进行对比研究.结果表明:阳离子可染聚酯熔体与普通聚酯熔体一样表现出剪切变稀现象,为假塑性非牛顿流体.强极性磺酸基的引入使得分子间作用力变强且与基质极性的差距会使磺酸基之间聚集形成离子聚集体,所以阳离子可染聚酯熔体的黏度、结构黏度指数更高.可逆的离子聚集现象使得阳离子可染聚酯熔体对于温度、剪切速率的变化更加敏感.同时口模直径的增大使得熔体流动阻力、入口收敛流动、黏性耗散减少,造成阳离子可染聚酯熔体的剪切黏度上升,非牛顿指数增大,黏流活化能下降.旋转流变仪的实验结果说明,阳离子可染聚酯处于高温环境下时,磺酸基发生聚集且随着时间的延长而加剧,引起黏度的明显增大.
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