Preparation of Activated Carbon Fiber-Ceramic Composites and Its Physical Properties

활성탄소섬유-세라믹복합체의 제조 및 물성

  • 이재춘 (명지대학교 무기재료공학과) ;
  • 박민진 (명지대학교 무기재료공학과) ;
  • 김병균 (명지대학교 무기재료공학과) ;
  • 신경숙 (명지대학교 무기재료공학과) ;
  • 이덕용 (명지대학교 무기재료공학과)
  • Published : 1997.01.01


The PAN (Polyacrylonitrile) based carbon fiber-ceramic composites (CFCC) were prepared from mixtures of short carbon fibers, phenolic resin and ceramic binder. The effects of carbonization temperature of a pre-cursor fiber, the stabilized PAN fiber, on the specific surface area and the bending strength of the activated CFCC were studied in this work. The precursor fiber was carbonized at 80$0^{\circ}C$ and 100$0^{\circ}C$, respectively. The CFCC were activated at 85$0^{\circ}C$ in carbon dioxide for 10~90 minutes. As the burn-off of the activated CFCC made of the precursor fiber carbonized at 80$0^{\circ}C$ was increased from 37% to 76%, the specific surface area in-creased from 493m2/g to 1090m2/g, and the bending strength decreased from 4.5MPa to 1.4MPa. These values were about two times larger than those of the activated CFCC of which precursor fiber was car-bonized at 100$0^{\circ}C$. The effects of carbonization temperature of a precursor fiber on the specific surface area and bending strength of the activated CCFC were explained by bonding force between carbon fiber and car-bonized phenolic resin as well as by relative shirnkage between carbon fiber and ceramic film.


Activated;Carbon fiber;Carbonization;Composites;Penolic resin


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