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Effect of Post-Heat-Treatment on Various Characteristics ofCommercial Pitch-Based Carbon Fibers

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2007, 8(2), pp.127-133
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General

윤성봉 1 Donghwan Cho 1 조채욱 1 Tae Jin Kim 1 Shin Dong Kim 1

1금오공과대학교

Candidate

ABSTRACT

In this study, commercially available pitch-based carbon fibers of general grade were post-heat-treated using a box-type high temperature furnace at 1800C, 2000C, 220C, and 240C, respectively. The fundamental characteristicsof each heat-treated carbon fibers were investigated in terms of chemical composition, morphology, thermal stability,X-ray diffraction, single filament tensile test, and electrical resistivity. The result showed that the fiber properties wereng the greater effect with increasing treatment temperature.The carbon contents, thermal stability, and tensile properties of the carbon fibers used here were further increased bythe post-heat-treatment, whereas the d-spacing betwen graphene layers and the electrical resistivity were reduced withincreasing post-heat-treatment temperature.

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