材料科学
表征(材料科学)
各向同性
复合材料
纤维
碳纤维
纳米技术
复合数
光学
物理
作者
Jiadeng Zhu,SangWook Park,Han-Ik Joh,Hwan Chul Kim,Sungho Lee
出处
期刊:Carbon letters
[Springer Nature]
日期:2013-04-30
卷期号:14 (2): 94-98
被引量:28
标识
DOI:10.5714/cl.2013.14.2.094
摘要
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 in-creased with an increase in the carbonization temperature. Although short graphitic-like lay-ers 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 struc-ture of isotropic pitch-based carbon fibers. The electrical conductivity of the carbonized fiber reached 3.9 × 10 4 S/m with the carbonization temperature increasing to 2000°C using a four-point method. Key words: isotropic pitch, stabilization, carbonization, Raman, X-ray diffraction
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