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Effect of Post-Heat-Treatment on Various Characteristics ofCommercial Pitch-Based Carbon Fibers
윤성봉,조동환,조채욱,Tae Jin Kim,Shin Dong Kim 한국탄소학회 2007 Carbon Letters Vol.8 No.2
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.