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Stabilization of pitch-based carbon fibers accompanying electron beam irradiation and their mechanical properties
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  • Journal title : Carbon letters
  • Volume 16, Issue 2,  2015, pp.121-126
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2015.16.2.121
 Title & Authors
Stabilization of pitch-based carbon fibers accompanying electron beam irradiation and their mechanical properties
Park, Mi-Seon; Ko, Yoonyoung; Jung, Min-Jung; Lee, Young-Seak;
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Carbon fibers are prepared by stabilizing pitch fibers accompanying electron beam (E-beam) irradiation. The carbon fibers pretreated by E-beam irradiation achieve a higher stabilization index than the carbon fibers that are only heat-stabilized. In addition, the carbon fibers subjected to E-beam irradiation in the stabilization step exhibit a comparable tensile strength to that of general purpose carbon fibers. The carbon fibers pretreated with an absorbed dose of 3000 kGy have a tensile strength of 0.54 GPa for a similar fiber diameter. Elemental, Fourier-transform infrared spectroscopy, and thermogravimetric analyses indicate that E-beam irradiation is an efficient oxidation and dehydrogenation treatment for pitch fibers by showing that the intensity of the aliphatic C-H stretching and aromatic bending (out-of-plane) bands significantly decrease and carbonyl and carboxylic groups form.
carbon fibers;pitch;stabilization;mechanical properties;
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