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- Title
The influence of stabilization efficiency on skin–core structure and properties of polyacrylonitrile fibers.
- Authors
Sun, Lihao; Shang, Lei; Xiao, Linghan; Zhang, Mengjie; Ao, Yuhui; Li, Ming
- Abstract
In this paper, we report the efficient preparation of polyacrylonitrile-based carbon fibers (CFs) by increasing the stabilization temperature and shortening the stabilization time. The oxidized fibers (OFs) were firstly prepared from precursor fibers (PFs) with different diameters at high stabilization efficiency. The skin–core structure of the obtained OFs was studied by optical microscopy, scanning electron microscopy, atomic force microscopy and nanoscale infrared laser spectroscopy, which revealed that fine denier PFs were more suitable for high-efficient stabilization treatment. Moreover, fine denier PFs were stabilized using four different temperature profiles, and then carbonized under stationary processing conditions to fabricate CFs with different stabilization efficiencies. The skin–core structure, crystallite thickness and mechanical properties of the obtained CFs were tested by scanning electron microscopy, Raman spectra, wide-angle X-ray diffraction and tensile testing methods. Noteworthily, T400-grade CFs were achieved and the manufacturing time was reduced by increasing stabilization efficiency, thus lowering the production costs of CFs.
- Subjects
MICROSCOPY; LASER spectroscopy; ATOMIC force microscopy; SCANNING electron microscopy; INFRARED microscopy; IMAGE stabilization
- Publication
Journal of Materials Science, 2020, Vol 55, Issue 8, p3408
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-019-04257-2