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Effect of Process Condition on Tensile Properties of Carbon Fiber

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2011, 12(1), pp.26-30
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General

이성호 1 Ji Hoon Kim 1 Bon-Cheol Ku 1 Kim, Jun Kyung 1 Chung Yong Sik 2

1한국과학기술연구원
2전북대학교

Candidate

ABSTRACT

For polyacrylonitrile (PAN) based carbon fiber (CF) process, we developed a lab scale wet spinning line and a continuous tailor-made stabilization system with ten columns for controlling temperature profile. PAN precursor was spun with a different spinning rate. PAN spun fibers were stabilized with a total duration of 45 to 110 min at a given temperature profile. Furthermore, a stabilization temperature profile was varied with the last column temperature from 230 to 275oC. Stabilized fibers were carbonized in nitrogen atmosphere at 1200oC in a furnace. Morphologies of spun and CFs were observed using optical and scanning electron microscopy, respectively. Tensile properties of resulting CFs were measured. The results revealed that process conditions such as spinning rate, stabilization time, and temperature profile affect microstructure and tensile properties of CFs significantly.

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