基于晶体角度研究聚丙烯腈基原丝及其碳纤维性能The Performance Analysis of Polyacrylonitrile-Based Precursors and its Carbon Fibers Based on the Crystal Structure
刘栋,陈秋飞,连峰,金亮,孙加贵,裴怀周
LIU Dong,CHEN Qiu-fei,LIAN Feng,JIN Liang,SUN Jia-gui,PEI Huai-zhou
摘要(Abstract)：
纤维内晶体的结晶度、晶体尺寸等均会对聚丙烯腈基原丝及碳纤维的性能产生影响。从晶体角度出发,采用X射线衍射仪、光学显微镜、扫描电子显微镜等对碳纤维及其原丝的结构、性能进行测试,分别对干喷湿纺与湿法纺丝制备的高低细旦化原丝及碳纤维、不同碳化程度碳纤维进行对比,分析纤维内部晶体结构对碳纤维特性的影响。结果表明:干喷湿纺工艺及高倍拉伸更容易获得较高力学性能的碳纤维。
The crystallinity,crystal size have effect on polyacrylonitrile-based precursors and its carbon fi-bers.The X ray diffractometer,optical microscope,scanning electron microscope are used to test the crystalstructure and performance of the PAN precursors and its carbon fibers.The high and low fine denier PANprecursors and its carbon fibers by dry-wet spinning and wet spinning are compared.The different graphitecarbon fibers are also compared.The influences of the crystals in the fiber on the performance of carbon fi-bers are analyzed.The results show that it is easier to obtain the higher mechanical performance carbon fi-bers under the high ratio drawing and by dry-wet spinning.
关键词(KeyWords)：
晶体;PAN基原丝;碳纤维;性能;研究
crystal;polyacrylonitrile-based precursor;carbon fiber;performance;research
基金项目(Foundation):
作者(Author):
刘栋,陈秋飞,连峰,金亮,孙加贵,裴怀周
LIU Dong,CHEN Qiu-fei,LIAN Feng,JIN Liang,SUN Jia-gui,PEI Huai-zhou
DOI: 10.16090/j.cnki.hcxw.2015.12.006
参考文献(References)：
- [1]Xu Q,Xu L,Cao W,et al.A study on the orientation structure and mechanical properties of polyacrylonitrile precursors[J].Polymers for Advanced Technologies.2005,16(8):642-645.
- [2]秦显营.聚丙烯腈纤维在热处理过程中的结构演变与控制:[D].上海:东华大学,2010:1-30.
- [3]贺福.碳纤维及石墨化纤维[M].北京:化学工业出版社,2010:30-50.
- [4]王延相.聚丙烯睛基炭纤维制备过程中组织结构演变的研究:[D].山东:山东大学,2003:31-90
- [5]季敏霞.PAN原丝在预氧化和碳化过程中微观结构的演变:[D].山东:山东大学,2008:15-40.
- [6]贺福.用拉曼光谱研究碳纤维的结构[J].高科技纤维与应用,2005,30(6):20-25.
- [7]Gupta AK,Maiti AK.Effect of heat treatment on the structure and mechanical properties of polyacrylonitrile fibers[J].Journal of Applied Polymer Science,1982,27(7):2 409-2 416.
- [8]Ko TH,Ting HY,Liu CH,et al.The microstmcture of stabilized fibers[J].Journal of Applied Polymer Science,1988,35(4):863-874.
- [9]张舰,张德刚.凝固条件对干喷湿法聚丙烯腈碳纤维微观结构和性能的影响[J].材料导报,2010,24(11):30-32.
- [10]王强,王延相,朱波.湿法纺丝中凝固成形和拉伸对聚丙烯腈原丝结构和性能的影响[J].合成纤维,2005,24(5):24-27.
- [11]季保华,王国成,朱波,等.湿法凝固负牵伸对初生纤维结构与性能的影响[J].合成纤维,2006,351(1):17-20.
- [12]董兴广.干喷湿纺中凝固牵伸对碳纤维前驱体PAN初生纤维的影响[J].广东化工,2011,38(8):48-50.
- [13]D R Paul.Diffusion during the eoagulation step of wetspinning[J].Journal of APPlied Polynler Seienee,1968,12:383-402.
- [14]季敏霞.PAN原丝在预氧化和碳化过程中微观结构的演变[D].山东:山东大学,2008:20-45.