A comparative analysis of polyacrylonitrile-based carbon fibers: (I) Microstructures

LI Deng-hua; LU Chun-xiang; HAO Jun-jie; WANG Hui-min

doi:10.1016/S1872-5805(20)60527-3

Volume 35 Issue 6

Dec. 2020

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Article Navigation > New Carbon Mater. > 2020 > 35(6): 793-801

LI Deng-hua, LU Chun-xiang, HAO Jun-jie, WANG Hui-min. A comparative analysis of polyacrylonitrile-based carbon fibers: (I) Microstructures. New Carbon Mater., 2020, 35(6): 793-801. doi: 10.1016/S1872-5805(20)60527-3

Citation:

LI Deng-hua, LU Chun-xiang, HAO Jun-jie, WANG Hui-min. A comparative analysis of polyacrylonitrile-based carbon fibers: (I) Microstructures. New Carbon Mater., 2020, 35(6): 793-801. doi: 10.1016/S1872-5805(20)60527-3

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A comparative analysis of polyacrylonitrile-based carbon fibers: (I) Microstructures

doi: 10.1016/S1872-5805(20)60527-3

1.
National and Local Joint Engineering Laboratory of Advanced Road Materials, Shanxi Transportation Technology Research&Development Co., Ltd, Taiyuan 030032, China;
2.
National Engineering Laboratory for Carbon Fiber Technology, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
3.
Shanxi Gangke Carbon materials Co., Ltd, Taiyuan 030100, China;
4.
School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

Funds: Key Research and Development (R&D) Projects of Shanxi Province (201903D121005); Project of Shanxi Transportation Holdings Group Co. Ltd. (18-JKKJ-22,19-JKKJ-53); Science and Technology Major Project of Shanxi Province (20181101019).

Received Date: 2020-03-26
Rev Recd Date: 2020-07-16
Publish Date: 2020-12-31

Abstract

Abstract

X-ray wide angle diffraction/small angle scattering, Raman spectroscopy and high resolution transmission electron microscopy were used to characterize the crystalline structure, pore structure, radial structural heterogeneity, degree of graphitization, internal residual stress, crystalline orientation and fractal phenomena of various grades (T and MJ) of polyacrylonitrile-based carbon fibers made by Toray Inc, Japan. Results showed that compared with the T series fibers, the MJ series fibers had a significantly lower internal residual stress, better structural orientation and a much higher degree of graphitization, but the dimensions of the microvoids and the radial inhomogeneity were increased, which revealed the significant influence of graphitization conditions in making MJ series fibers on the microstructures of carbon fibers.
- Carbon fiber,
- Crystalline structure,
- Degree of graphitization,
- Structural heterogeneity,
- Fractal

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References(26)

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