Effects of Ultra-high Temperature Treatment on the Microstructure of Carbon Fibers
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Effects of Ultra-high Temperature Treatment on the Microstructure of Carbon Fibers
Effects of Ultra-high Temperature Treatment on the Microstructure of Carbon Fibers
Chinese Journal of Polymer Science2017年35卷第6期 页码:764-772
Affiliations:
a.Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
b.University of Chinese Academy of Sciences, Beijing 100049, China
Author bio:
Jian Xu (徐坚), E-mail: jxu@iccas.ac.cn
Rui-gang Liu (刘瑞刚), E-mail: rgliu@iccas.ac.cn
Funds:
This work was financially supported by the National High Technology Research and Development Program of China(863 Program, No. 2015AA03A204)
Wei-wei Li, Kang Hong-liangKang, Jian Xu, 等. Effects of Ultra-high Temperature Treatment on the Microstructure of Carbon Fibers[J]. Chinese Journal of Polymer Science, 2017,35(6):764-772.
Wei-wei Li, Kang Hong-liangKang, Jian Xu, et al. Effects of Ultra-high Temperature Treatment on the Microstructure of Carbon Fibers[J]. Chinese Journal of Polymer Science, 2017, 35(6): 764-772.
Wei-wei Li, Kang Hong-liangKang, Jian Xu, 等. Effects of Ultra-high Temperature Treatment on the Microstructure of Carbon Fibers[J]. Chinese Journal of Polymer Science, 2017,35(6):764-772.DOI: 10.1007/s10118-017-1922-9.
Wei-wei Li, Kang Hong-liangKang, Jian Xu, et al. Effects of Ultra-high Temperature Treatment on the Microstructure of Carbon Fibers[J]. Chinese Journal of Polymer Science, 2017, 35(6): 764-772.DOI: 10.1007/s10118-017-1922-9.
Effects of Ultra-high Temperature Treatment on the Microstructure of Carbon Fibers
The microcrystalline structure and microvoid structure in carbon fibers during graphitization process (2300-2700 ℃) were characterized employing laser micro-Raman scattering (Raman)
X-ray diffraction (XRD)
small angle X-ray scattering (SAXS)
and high-resolution transmission electron microscopy (HR-TEM). The crystalline sizes (
L
a
L
c
) increased and interlayer spacing (
d
002
) decreased with increasing heat treatment temperature (HTT). The microvoids in the fibers grew up and contacted to the neighbors with the development of microcrystalline. In addition
the preferred orientation of graphite crystallite along fiber axis decreased and microvoids increased. The results are crucial for analyzing the evolution of microstructure of carbon fibers in the process of heat treatment and important for the preparation of high strength and high modulus carbon fibers.
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