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Stabilization of pitch-based carbon fibers accompanying electron beam irradiation and their mechanical properties KCI 등재

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Carbon Letters (Carbon letters)
한국탄소학회 (Korean Carbon Society)
초록

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 Ebeam irradiation is an efficient oxidation and dehydrogenation treatment for pitch fibers by showing that the intensity of the aliphatic C–H stretching and aromatic CH2 bending (out-ofplane) bands significantly decrease and carbonyl and carboxylic groups form.

목차
Abstract
 1. Introduction
 2. Experimental
  2.1. Preparation of pitch fibers
  2.2. Stabilization and carbonization procedure
  2.3. Characterizations
  2.4. Mechanical properties of the CFs
 3. Results and Discussion
  3.1. Changes in chemical structures
  3.2. Evaluation of stabilization
  3.3. Mechanical properties after carbonization
 4. Conclusions
 Acknowledgements
 References
저자
  • Mi-Seon Park(Department of Applied Chemistry and Biological Engineering, Chungnam National University, Daejeon 305-764, Korea)
  • Yoonyoung Ko(Department of Applied Chemistry and Biological Engineering, Chungnam National University, Daejeon 305-764, Korea)
  • Min-Jung Jung(Department of Applied Chemistry and Biological Engineering, Chungnam National University, Daejeon 305-764, Korea)
  • Young-Seak Lee(Department of Applied Chemistry and Biological Engineering, Chungnam National University, Daejeon 305-764, Korea) Corresponding author