Preparation and Characterization of Isotropic Pitch-Based Carbon Fiber
- Preparation and Characterization of Isotropic Pitch-Based Carbon Fiber
- 주가등; 박상욱; 조한익; 김환철; 이성호
- isotropic pitch; stabolization; carbonization; Raman; X-ray diffraction (XRD); XRD
- Issue Date
- Carbon Letters
- VOL 14, NO 2, 94-98
- Isotropic pitch fibers were stabilized and carbonized for preparing carbon fibers. To optimize the duration and temperature during the stabilization process, a thermogravimetric analysis was conducted. Stabilized fibers were carbonized at 1000, 1500, and 2000°C in a furnace under a nitrogen atmosphere. An elemental analysis confirmed that the carbon content increased with an increase in the carbonization temperature. Although short graphitic-like layers were observed with carbon fibers heat-treated at 1500 and 2000°C, Raman spectroscopy and X-ray diffraction revealed no significant effect of the carbonization temperature on the crystalline structure of the carbon fibers, indicating the limit of developing an ordered structure of isotropic pitch-based carbon fibers. The electrical conductivity of the carbonized fiber reached 3.9 × 104 S/m with the carbonization temperature increasing to 2000°C using a four-point method.
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