Preparation and Characterization of Isotropic Pitch-Based Carbon Fiber

Title
Preparation and Characterization of Isotropic Pitch-Based Carbon Fiber
Authors
주가등박상욱조한익김환철이성호
Keywords
isotropic pitch; stabolization; carbonization; Raman; X-ray diffraction (XRD); XRD
Issue Date
2013-04
Publisher
Carbon Letters
Citation
VOL 14, NO 2, 94-98
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/44983
ISSN
19764251
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KIST Publication > Article
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