Chemical Industry and Engineering Progress ›› 2017, Vol. 36 ›› Issue (03): 985-988.DOI: 10.16085/j.issn.1000-6613.2017.03.029

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Effects of melt spinning speed on performance of mesophase pitch based carbon fibres

LI Fuhu1, CHI Weidong2, SHEN Zengmin2, LIU Hui2, YU Jianmin2   

  1. 1 College of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China;
    2 Institute of Carbon Fiber and Composites, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2016-07-26 Revised:2016-10-09 Online:2017-03-05 Published:2017-03-05

熔融纺丝速度对中间相沥青炭纤维性能的影响

李伏虎1, 迟伟东2, 沈曾民2, 刘辉2, 于建民2   

  1. 1 安徽理工大学化学工程学院, 安徽 淮南 232001;
    2 北京化工大学炭纤维及复合材料研究所, 北京 100029
  • 通讯作者: 李伏虎(1970-),男,博士,主要从事炭材料制备与应用的研究。
  • 作者简介:李伏虎(1970-),男,博士,主要从事炭材料制备与应用的研究。E-mail:lifuhu2003@163.com。
  • 基金资助:

    华东理工大学煤气化及能源化工教育部重点实验室开放基金项目(WB1014046-36)。

Abstract:

Mesophase pitch based fibres(MPF) are prepared by melt spinning method from AR-mesophase pitch. After oxidation and carbonization,mesophase pitch based carbon fibres(MPCF) are obtained. The effects of spinning speed on the diameter,microstructure,surface micro-morphology and mechanical properties of carbon fibres are investigated by means of optical microscope,scanning electron microscope(SEM) and fibre strength tester,respectively. The results show that the average diameter of MPF decreases and its spinnability decline gradually with the increase of spinning speed. When the spinning speed is higher than 330m/min,the lengthwise texture flaws appear on the surface of MPCF and the internal microstructure becomes more disordered. Moreover,the tensile strength of MPCF with 11μm in diameter reaches the maximum of 1786MPa at spinning speed of 330m/min.

Key words: mesophase pitch, carbon fibre, spinning speed, mechanical properties

摘要:

以AR中间相沥青为原料,采用熔融纺丝法制备出中间相沥青纤维,再经预氧化和炭化处理得到中间相炭纤维。采用光学显微镜、扫描电镜(SEM)及纤维拉力仪等手段,研究了熔融纺丝速度对中间相炭纤维直径、内部微观结构、纤维表面微观形貌及纤维力学性能的影响。研究结果表明,随着纺丝速度的增大,中间相沥青纤维平均直径减小,可纺性逐渐下降;当纺丝速度大于330m/min时,中间相炭纤维表面出现纵向纹理缺陷,纤维内部微观结构变得无序;在纺丝速度为330m/min时,炭纤维拉伸强度达到最大值1786MPa,此时纤维直径为11μm。

关键词: 中间相沥青, 炭纤维, 纺丝速度, 力学性能

CLC Number: 

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