Effects of Precursor Process Oil and Heating Rate During Carbonization on Defects and Tensile Properties of Resultant PAN-based Carbon Fibers

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  • ポリアクリロニトリル系炭素繊維の欠陥と引張強度に及ぼす前駆体繊維用工程油剤及び炭素化時の昇温速度の影響
  • Studies on the Improvement of Productivity of High-Performance Polyacrylonitrile-based Carbon Fiber. VI. Effects of Precursor Process Oil and Heating Rate During Carbonization on Defects and Tensile Properties of Resultant PAN-based Carbon Fibers.

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Description

The surface and internal defects of the fibers, such as coalescence of fibers, cavitation in the fiber and formation of micropores, are known to govern the tensile properties of the polyacrylonitrile (PAN) based carbon fibers. The precursor PAN fibers were sized with two kinds of the process oil, oxidized under two steps oxidation conditions and then carbonized at various heating rate. Stabilization degree SI and chemically-bound oxygen of the oxidized fibers, density and tensile properties of the carbon fibers were measured. The effects of process oil and heating conditions on the formation of defects and tensile properties of the resulting carbon fibers were discussed. In order to produce carbon fibers with less surface and internal defects, as a consequence having high tensile strength, it was preferable that the oxidized fibers with the chemically-bound oxygen of about 8% using polydimethylsiloxisane as a process oil were carbonized at the heating rate below 15°C/s.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1994 (10), 927-932, 1994-10-10

    The Chemical Society of Japan

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