二甲基乙酰胺体系聚丙烯腈初生纤维的制备与结构探究  

Study on the Preparation and Structures of Polyacrylonitrile As-spun Fibers with Dimethylacetamide Systems

作　　者：李明洋 姜彦波 毛炳淇 付中禹 LI Mingyang;JIANG Yanbo;MAO Bingqi;FU Zhongyu(School of Chemical Engineering,Changchun University of Technology,Changchun 130012,China;Carbon Fiber Industry Innovation Center of Jilin Province,Changchun 130012,China;Jilin Tangu Carbon Fiber Co.,Ltd.,Jilin 132000,China)

机构地区：[1]长春工业大学化学工程学院,吉林长春130012 [2]吉林省碳纤维产业创新中心,吉林长春130012 [3]吉林碳谷碳纤维股份有限公司,吉林吉林132000

出　　处：《塑料工业》2024年第5期153-159,共7页China Plastics Industry

基　　金：吉林省重大科技专项(YDZJ202203CGZH025);吉林省碳纤维产业创新中心(2022C002)。

摘　　要：为了探明工艺条件对初生纤维结构与性能的影响,采用旋转黏度计法研究了聚丙烯腈(PAN)含量对其纺丝液黏度的影响。实验结果表明,PAN含量增大,纺丝液的非牛顿流体特性增大。采用扫描电子显微镜(SEM)、X射线衍射仪(XRD)研究了凝固浴条件(纺丝液浓度、凝固浴温度、凝固浴液浓度、凝固时间)对初生纤维结构的影响。结果表明,纺丝液浓度为20%、凝固浴温度为60~65℃、凝固浴液浓度(质量分数)为65%、凝固时间为30 s时,有利于制备表面光滑、圆形截面的PAN初生纤维。To investigate the influences of process conditions on the structures and properties of as-spun fibers,the effects of polyacrylonitrile(PAN)contents on the viscosity of its spinning solution were studied via using a rotational viscometer.The results show that,with the increase of PAN content,the non-Newtonian fluid characteristic of the spinning solution is increased.Scanning electron microscopy(SEM)and X-ray diffraction(XRD)were used to investigate the influences of coagulation bath conditions(the mass fraction of spinning solution,coagulation bath temperature,the mass fraction of coagulation bath,coagulation time)on the formation of as-spun fiber structures.When the mass fraction of spinning solution is 20%,the coagulation bath temperature is 60-65℃,the mass fraction of coagulation bath is 65%,and the coagulation time is 30 s,the PAN as-spun fibers with smooth surfaces and circular sections are prepared.

关 键 词：聚丙烯腈 湿法纺丝 凝固浴 初生纤维 

分 类 号：TQ325.8[化学工程—合成树脂塑料工业]