聚丙烯腈基碳纤维石墨化过程的晶体结构分析(英文)  

Crystal Structures of PAN-based Carbon Fibers during Graphitization

作　　者：王岭[1] 仝建峰[1] 李宝伟[1] 黄浩[1] 

机构地区：[1]北京航空材料研究院先进复合材料国防科重点实验室,北京813信箱100095

出　　处：《材料工程》2009年第S2期363-367,共5页Journal of Materials Engineering

摘　　要：使用国产聚丙烯腈基碳纤维进行石墨化实验,制备高模量的碳纤维。使用X光衍射和拉曼光谱的方法对晶体结构进行了表征,讨论了石墨化工艺参数,包括石墨化温度以及牵引张力大小对晶体结构的影响。实验发现:高温石墨化辅助牵伸石墨化是有效的方法提高石墨化度制备得到石墨化碳纤维。本文使用国产碳纤维在2700℃以及牵伸为1.5%时制备得到了杨氏模量为356GPa的高模量碳纤维。Graphitization experiments are carried out on PAN-based carbon fibers manufactured in China to prepare high modulus carbon fibers.The influence of the process parameters including the temperature and stretching on the crystal structures is discussed using X-ray diffraction(XRD)and Raman spectroscopy.Both high temperature treatment and stretching are two effective methods to obtain high-modulus carbon fibers.PAN-based carbon fibers having a Young's modulus of 356GPa are prepared at a heat treatment temperature of 2700℃ with a strecthing of 1.5%.

关 键 词：石墨化 聚丙烯腈基碳纤维 X光衍射 拉曼光谱 

分 类 号：TQ342.742[化学工程—化纤工业]