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 （H...

Full description

Saved in:
Bibliographic Details
Published in:Chinese journal of polymer science 2017-06, Vol.35 (6), p.764-772
Main Authors: Li, Wei-wei, Kang, Hong-liang, Xu, Jian, Liu, Rui-gang
Format: Article
Language:English
Subjects:
Carbon fibers
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Crystallites
Graphitization
Heat treatment
High resolution electron microscopy
Industrial Chemistry/Chemical Engineering
Interlayers
Microstructure
Polymer Sciences
Preferred orientation
Raman spectra
Ultrahigh temperature
X-ray scattering
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 （La, Lc） increased and interlayer spacing （d002） 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.
ISSN:0256-7679
1439-6203
DOI:10.1007/s10118-017-1922-9