PAN基碳纤维原丝梯级凝固成型的研究  

Study on the Gradient Solidification Processing of PAN Precursor

作　　者：梁艺乐[1] 王威[1] 阎晋[1] 张德刚[1] 赵炯心[1] 张幼维[1] 潘鼎[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：《材料工程》2009年第S2期204-206,210,共4页Journal of Materials Engineering

基　　金：国家973项目(2006CB605302;2006CB605303);上海市科委重大基础理论项目(07DJ14002);上海市启明星人才计划(07QA14001)

摘　　要：碳纤维是增强复合材料力学性能的重要材料,优质的PAN原丝是制备高性能碳纤维的前提,而原丝的结构主要决定于纤维成形阶段。本文以相图为指导,采用湿法纺丝得到了不同成型条件下的纤维原丝,并利用扫描电镜研究了纤维的横截形貌和皮芯结构。研究表明经过梯级凝固成型后,可以得到结构均匀致密且具有较优物理机械性能的原丝,证实了在相图中梯级凝固成型路线是较优的热力学路线。Carbon fiber is such an important material that reinforcing the mechanical properties of composite materials.High-quality preparation of PAN precursor is a prerequisite for high-performance carbon fiber,and the structure of precursor is formed at the forming stage.In this work,based on the thermodynamic phase diagram,it was investigated coagulation formation for PAN-based precursor in different processes.The morphology and the skin-core structure were examined with scanning electron microscope.Judging form our investigation,it can be concluded that forming path of gradient solidification in ternary phase diagram was optimal thermodynamic path.

关 键 词：PAN原丝 梯级凝固 形貌结构 

分 类 号：TB332[一般工业技术—材料科学与工程]