化工进展2018，Vol.37Issue(2)：658-663,6.DOI:10.16085/j.issn.1000-6613.2017-0952
激光石墨化过程中激光功率和牵伸力对聚丙烯腈基碳纤维化学结构和微观结构的影响
Effect of laser power and stretching force on the chemical structure and microstructure of PAN-based carbon fibers under laser graphitization
摘要
Abstract
The graphitization of PAN based carbon fibers was carried out on a self-made laser based high temperature graphitization platform.Serials of carbon fiber samples were prepared under different laser power and different traction conditions.Then the chemical structure and microcrystal structure of the samples were studied by Raman spectroscopy and X-ray diffraction (XRD) respectively.The results showed that if the stretching force remained constant,the graphitization degree of carbon fiber increased with the laser power.When the laser power reached a certain value,the increase of graphitization degree by solely increasing the laser power became less obvious.If the laser power remained constant,as the stretching force increased,the size of graphite crystallite Lc,Laincreased accordingly,while d002and the orientation angle reduced gradually.In the process of laser based graphitization of fabricating carbon fiber,exerting a certain stretching force can impel the graphite crystallite of carbon fiber to preferentially orient along the fiber axis,and finally the crystallite size is improved,and the spacing of graphite microcrystalline layer is reduced and the number of microcrystalline packing layers is increased.关键词
聚丙烯腈基碳纤维/石墨化/激光/微晶尺寸/热牵伸Key words
PAN-based carbon fibers/graphitization/laser/crystal size/hot stretching分类
化学化工引用本文复制引用
黎三洋,张有忱,沙扬,姚良博,谭晶,李好义,曹维宇,杨卫民..激光石墨化过程中激光功率和牵伸力对聚丙烯腈基碳纤维化学结构和微观结构的影响[J].化工进展,2018,37(2):658-663,6.基金项目
国家自然科学青年基金项目(51602015). （51602015）
