聚丙烯腈废纤维制备碳纤维原丝用纺丝溶液研究  

Study on spinning solution to prepare precursor for carbon fiber from waste PAN fiber

作　　者：张顺 陈洞 王宇 高爱君[3,4] 徐樑华[3,4] 李常清[3,4] Zhang Shun;Chen Dong;Wang Yu;Gao Aijun;Xu Lianghua;Li Changqing(Weihai Tuozhan Fiber Co.,Ltd.,Weihai 264211;Shandong Carbon Fiber Technology Innovation Center,Weihai 264211;Key Laboratory of Carbon Fiber and Functional Polymer,Ministry of Education,Beijing University of Chemical Technology,Beijing 100029;State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing 100029)

机构地区：[1]威海拓展纤维有限公司,威海264211 [2]山东省碳纤维技术创新中心,威海264211 [3]北京化工大学碳纤维及功能高分子教育部重点实验室,北京100029 [4]北京化工大学有机无机复合材料国家重点实验室,北京100029

出　　处：《化工新型材料》2021年第7期81-84,共4页New Chemical Materials

基　　金：山东省碳纤维技术创新中心项目(CX2019-01)。

摘　　要：采用光学显微镜和紫外可见分光光度计研究了聚丙烯腈(PAN)纤维的溶胀、溶解过程,采用旋转流变仪和激光粒度仪研究了不同组成PAN溶液的流变特性及对PAN溶液相转变的影响。结果表明:增大与溶剂的接触面积和延长时间,有利于PAN废丝的溶胀、溶解;PAN含量越多,大分子缠结作用力越大,分子间相互作用越强烈,PAN溶液的复数黏度、储能模量和损耗模量越大,在沉淀剂水中形成较大和较多的聚合物颗粒;可以用PAN废丝制备用于碳纤维原丝用的纺丝溶液。The swelling and dissolution of polyacrylonitrile(PAN)fibers were studied by optical microscopy and ultraviolet-visible spectrophotometer.The rheological properties of PAN solutions with different compositions and their effects on the phase transition of PAN solutions were studied by rheometer and laser particle size analyzer.The results shown that increasing the contact area and prolonging time was beneficial to swelling and dissolution of waste PAN fiber.The more PAN content was,the greater the entanglement force of macromolecules,the stronger the intermolecular interaction.The greater the complex viscosity,storage modulus and loss modulus of PAN solution,the larger and more polymer particles will form in precipitating water.The waste PAN fiber was used to prepare spinning solution for carbon fiber precursor.

关 键 词：废聚丙烯腈纤维 溶胀 溶解 流变性质 相转变 

分 类 号：TQ317[化学工程—高聚物工业]