多壁碳纳米管/聚丙烯腈复合纤维的动静态力学性能研究  

Static and Dynamic Mechanical Properties of MWNTs/PAN Composite Fibers

作　　者：张舰[1] 张德刚[1] 张幼维[1] 赵炯心[1] 

机构地区：[1]东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《材料导报》2011年第2期33-35,46,共4页Materials Reports

基　　金：上海市启明星计划(07QA14001);国家"973"碳纤维重大专项(2006CB605303)

摘　　要：采用干湿法纺丝工艺制备了多壁碳纳米管(MWNTs)增强的聚丙烯腈(PAN)复合纤维,表征了复合纤维的动静态力学性能。结果表明,采用空气拉伸新工艺并添加少量MWNTs后显著提高了PAN纤维的力学性能;由于MWNTs容易在拉伸作用下取向,且与PAN间存在较强的相互作用,使得与MWNTs作用的PAN分子更易取向并结晶,从而提高了复合纤维的结晶度和取向度,达到了增强的效果。Multi-walled carbon nanotubes（MWNTs）/ polyacrylonirtile（PAN） composite fibers were prepared by dry-jet wet spinning, and the static and dynamic mechanical properties of the composite fibers were studied. The results reveal that using air-draw new process, the mechanical properties of PAN fibers were improved remarkably after the introduction of a small amount of MWNTs. MWNTs are liable to orientate under drawing. The strong interactions between MWNTs and PAN chains induce a part of PAN chains, which interact with MWNTs, to orientate and crystallize, thus the crystallinity, orientation and the mechanical DroDerties of the composite fibers are improved.

关 键 词：聚丙烯腈 多壁碳纳米管 力学性能 

分 类 号：TB383[一般工业技术—材料科学与工程]