Strengthening of PAN-Based Carbon Fibers by Imposing a High Magnetic Field in a Carbonization Process

DOI Web Site 1 Citations 20 References
  • Sung Mun-Gyu
    Graduate School of Engineering, Nagoya University
  • Sassa Kensuke
    Department of Materials Processing Engineering, Nagoya University
  • Inoue Kunihiko
    Corporate and Planning Division, Toho Tenax Co., Ltd
  • Ogawa Hiroyasu
    Former working place: Corporate and Planning Division, Toho Tenax Co., Ltd.
  • Doyama Masao
    Department of Science and Engineering, Teikyo University of Science & Technology
  • Yamada Shigehiko
    Department of Science and Engineering, Teikyo University of Science & Technology
  • Asai Shigeo
    Department of Materials Processing Engineering, Nagoya University

Bibliographic Information

Other Title
  • 炭素化過程における強磁場印加によるPAN系炭素繊維の強化
  • タンソカ カテイ ニ オケル キョウジバ インカ ニ ヨル PANケイ タンソ センイ ノ キョウカ

Search this article

Abstract

Carbon fibers produced from PAN (polyacrylonitrile) as a precursor are generally subjected to the three heat treatment processes of stabilization and carbonization followed by graphitization. The fibers that had been stabilized in the first process were carbonized in a high magnetic field imposed parallel to fiber axis at the temperature of 1445K and graphitized without magnetic field at 2273K. The tensile strength of these treated fibers was increased in 15-31% in comparison with that of the fibers treated in no magnetic field. The reason why the imposition of the magnetic field could improve the strength of fibers has been studied through the methods such as a microscopic observation of fiber surfaces, a statistical Weibull analysis, an X-ray diffraction and a Raman spectroscopy. By using of the observed and measured results, the mechanism of strengthening of PAN-based carbon fibers by imposing the high magnetic field has been discussed on the basis of an intermolecular cross-linking reaction in terms of a radical pair theory in a magnetic field.

Journal

  • TANSO

    TANSO 2001 (200), 255-260, 2001

    THE CARBON SOCIETY OF JAPAN

Citations (1)*help

See more

References(20)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top