PAN/Cellulose复合纤维制备碳纤维的研究  

Preparation of carbon fiber from PAN/cellulose composite fiber

作　　者：候盛斐 陈惠芳[1,2] Hou Shengfei;Chen Huifang(College of Materials Science and Engineering, Donghua University,Shanghai 201620;Key Laboratory of High Performance Fibers ＆ Products, Donghua University, Shanghai 201620)

机构地区：[1]东华大学材料科学与工程学院,上海201620 [2]东华大学高性能纤维及制品教育部重点实验室,上海201620

出　　处：《合成纤维工业》2018年第3期37-41,共5页China Synthetic Fiber Industry

摘　　要：以聚丙烯腈(PAN)/纤维素(Cellulose)复合纤维为碳纤维前驱体,通过预氧化、碳化工艺处理,制备了PAN/Cellulose基复合碳纤维,对前驱体复合纤维PAN/Cellulose与所得碳纤维的结构及性能进行了研究。结果表明:相比PAN纤维,PAN/Cellulose复合纤维的结晶度和晶粒尺寸减小,环化反应活化能降低了约40 k J/mol;Cellulose具有促进石墨化的效果,PAN/Cellulose基复合碳纤维的电阻率较PAN基碳纤维提高了112.7%,这将有助于拓展PAN基碳纤维在民用隔热材料领域的应用。A novel polyacrylonitrile（ PAN）/cellulose-based composite carbon fiber was prepared by using PAN/cellulose composite fiber as a precursor through preoxidation and carbonization processes. The structure and performance of PAN/cellulose composite fiber and the obtained carbon fiber were characterized. The results showed that as compared with PAN fiber,the PAN/cellulose composite fiber exhibited lower crystallinity and grain size and had a reduction of 40 k J/mol or so in the cyclization reaction activation energy; and cellulose could promote the graphitization for carbon fiber and raise the electrical resistivity of PAN/cellulose-based carbon fiber by 112. 7%,which is conducive to expanding the application of PAN-based carbon fiber in the field of heat insulation materials.

关 键 词：聚丙烯腈纤维 纤维素纤维 复合纤维 碳纤维 电阻率 

分 类 号：TQ342.742[化学工程—化纤工业]