High Strengthening of PAN-based Carbon Fiber by Imposing of a High Magnetic Field in Graphitization Process

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  • Ito Miwako
    Graduate Student, Graduate School of Engineering, Nagoya University Ito Yoji Patent office
  • Sassa Kensuke
    Graduate School of Engineering, Nagoya University
  • Ogawa Hiroyasu
    Corporate and Planning Division, Toho Rayon 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
    Graduate School of Engineering, Nagoya University

Bibliographic Information

Other Title
  • 黒鉛化過程での強磁場の印加によるPAN系炭素繊維の高強度化
  • コクエンカ カテイ デ ノ キョウジバ ノ インカ ニ ヨル PANケイ タンソ センイ ノ コウキョウドカ

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Description

A high static magnetic field was imposed on PAN-based carbon fibers in the graphitization process. Oxidized fibers were graphitized in the magnetic field of 12 T and at the temperature of 2, 273 K. Samples were made under the magnetic fields perpendicular to fiber axis and parallel to it. The latter treatment has improved the tensile strength more than the former does. In the both samples the increase of the tensile strength more than 30% has been achieved by imposing the magnetic field. The reason of improvement of the tensile strength is discussed from the view points of magnetic energies difference due to the magnetic anisotropy of a six carbocyclic ring and of flaws on a fiber.

Journal

  • TANSO

    TANSO 2000 (191), 37-41, 2000

    THE CARBON SOCIETY OF JAPAN

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