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Effect of additional heat-treatment temperature on chemical, microstructural, mechanical, and electrical properties of commercial PAN-based carbon fibers
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  • Journal title : Carbon letters
  • Volume 12, Issue 4,  2011, pp.223-228
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2011.12.4.223
 Title & Authors
Effect of additional heat-treatment temperature on chemical, microstructural, mechanical, and electrical properties of commercial PAN-based carbon fibers
Cho, Dong-Hwan; Yoon, Sung-Bong; Cho, Chae-Wook; Park, Jong-Kyoo;
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In this present work, the effect of additional heat-treatment (AHT) in the range from to on the chemical composition, morphology, microstructure, tensile properties, electrical resistivity, and thermal stability of commercial polyacrylonitrile (PAN)-based carbon fibers was explored by means of elemental analysis, electron microscopy, X-ray diffraction analysis, single fiber tensile testing, two-probe electrical resistivity testing, and thermogravimetric analysis (TGA). The characterization results were in agreement with each other. The results clearly demonstrated that AHTs up to played a significant role in further contributing not only to the enhancement of carbon content, fiber morphology, and tensile modulus, but also to the reduction of fiber diameter, inter-graphene layer distance, and electrical resistivity of "as-received" carbon fibers without AHT. The present study suggests that key properties of commercial PAN-based carbon fibers of an intermediate grade can be further improved by proprietarily adding heat-treatment without applying tension in a batch process.
PAN-based carbon fiber;additional heat-treatment;chemical composition;mechanical property;electrical resistivity;microstructure;
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