Bulletin of the Korean Chemical Society

  • 제30권10호
  • /
  • Pages.2253-2258
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  • 2009
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Process Optimization for Preparing High Performance PAN-based Carbon Fibers

  • Yun, Jeong-Hyeon (Faculty of Applied Chemical Engineering and Alan G. MacDiarmid Energy Research Institute (AMERI), Chonnam National University) ;
  • Kim, Bo-Hye (Faculty of Applied Chemical Engineering and Alan G. MacDiarmid Energy Research Institute (AMERI), Chonnam National University) ;
  • Yang, Kap-Seung (Faculty of Applied Chemical Engineering and Alan G. MacDiarmid Energy Research Institute (AMERI), Chonnam National University) ;
  • Bang, Yun-Hyuk (R&D Business Labs, Hyosung Corporation) ;
  • Kim, Sung-Ryong (R&D Business Labs, Hyosung Corporation) ;
  • Woo, Hee-Gweon (Alan G. MacDiarmid Energy Research Institute (AMERI), Nanotechnology Research Center (NTRC) and Department of Chemistry, Chonnam National University)
  • 발행 : 2009.10.20
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초록

wet spun polyacrylonitrile (PAN) fiber precursors. The process variables chosen were treatment temperature, applied tension in stabilization process. The temperature profile of the stabilization was set on the basis of exothermic peaks of the differential scanning calorimetry (DSC) result. Both tensile strength and modulus increased with holding at onset temperatures of the exothermic peaks for extended duration, and with a higher heating rate up to the onset temperatures at a given applied tension among the experimental conditions. The increase in load monotonously increased the tensile modulus, on the other hand, the tensile strength was maximum at the load of 15 mg/filament (T15). The load 20 mg/ filament (T20) was considered to be exceeded to form oriented crystalline structure, possibly introducing more defects in the fiber than under load of T15. The sample CP3-T15 O5 H30 showed the best tensile properties among the samples experimented whose tensile properties are compatible with the commercialized grade of general purpose carbon fibers even at low carbonization temperature such as $800\;{^{\circ}C}$ (the carbonization temperature in the commercial process. 1300∼$1500\;{^{\circ}C}$).

키워드

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