Correlation between microstructure and mechanical properties of PAN-based carbon fiber

The micro-structures of 4 three kinds of carbon fiber products of T300, T700SC and T800HB were characterized by using scanning electron microscope, X-ray diffractometer and small angle X-ray scattering system. The micro-structure information was obtained including the fibril structure reflected by t...

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Bibliographic Details
Published in:Hang kong cai liao xue bao 2013-02, Vol.33 (1), p.78-85
Main Authors: Jing, Min, Tan, Ting-Ting, Wang, Cheng-Guo, Feng, Zhi-Hai, Yang, Yun-Hua
Format: Article
Language:Chinese
Subjects:
Carbon fibers
Density
Elongation
Mechanical properties
Morphology
Orientation
Scanning electron microscopy
Tensile strength
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Summary:The micro-structures of 4 three kinds of carbon fiber products of T300, T700SC and T800HB were characterized by using scanning electron microscope, X-ray diffractometer and small angle X-ray scattering system. The micro-structure information was obtained including the fibril structure reflected by the surface groove morphology, the graphic micro-crystal size and orientation degree, the micro-pore size. The experimental results show that the mechanical properties of the carbon fiber are not determined by some micro-structure characterization, but an expression of all micro-structure characterization. The mechanical properties of T300 are the worst among the three kinds of carbon fibers. Its five micro-structure parameters are all the worst. The diameter of T700S is little smaller than that of T300, however, its structure is compacter and defects are less, it is the reason that why the tensile strength, the tensile modulus and the elongation of T700S are higher. Although the fibril structure of T800H is not bet
ISSN:1005-5053
DOI:10.3969/j.issn.1005-5053.2013.1.014