Abstract
Pitch precursors were synthesized from coal tar(CT) and pyrolysis fuel oil(PFO, petroleum residue oil) at relatively low temperature of 250°C, in the presence of borontrifluoride/diethyletherate complex(BFDE) as a catalyst and nitrobenzene(NB) as a co-catalyst. The softening point, nitrogen content and carbon yield increased with an increase of concentration of NB. The pitch precursors with good spinnability were prepared by removing the volatile components through N2 blowing. The precursor pitches were spun through a circular nozzle, stabilized at 310°C and finally carbonized at 1000°C. The optically anisotropic structure formed at the absence of NB was changed into isotropic structure, showing a decrease in size of the flow domain. The hollow carbon fiber could be prepared in the process of stabilization. The results proposed that the morphology of carbon materials could be controlled by changing the concentration of catalyst and/or co-catalyst and/or stabilization condition that affect on the mobility of molecules during carbonization.
Similar content being viewed by others
References
I. N. Ermolenko, I. P. Lyubliner, and N. V. Gulko in “Chemically Modified Carbon Fibers: and Their Applications”, pp.1–4, VCH, Weinheim, 1990.
F. Fitzer,Carbon,27, 625 (1989).
L. H. Peebles in “Carbon fibers: formation, structure, and properties”, pp.3–42, CRC Press, 1995.
S. Otani, K. Okuda, and S. Matsuda in “Carbon fiber”, p. 160, Kindai Henshusha, Tokyo, 1986.
R. Baker, M. Baker, P. Harris, F. Feates, and R. J. White,J. Catal.,26, 51 (1972).
R. Baker and R. J. White,J. Catal.,37, 101 (1975).
I. Mochida, E. I. Nakamura, K. Maeda, and K. Takeshida,Carbon,13, 489 (1975).
I. Mochida and Y. Korai,J. Fuel Soc. Japan,64, 796 (1985).
I. Mochida, K. Shimiju, Y. Korai, S. Fujiyama, H. Otsuka, and Y. Sakai,Carbon,28, 311 (1990).
Y. Korai, M. Nakamura, I. Mochida, Y. Sakai, and S. Fujiyama,Carbon,29, 561 (1991).
K. S. Yang, K. S. Shin, Y. A. Kim, and K. H. An, “Extended Abstract of Autumnal Korean Fiber Society, Yongnam Univ.”, p.111, Kyungbuk, 1996.
K. S. Yang, D. J. Lee, K. H. An, J. H. Choi, H. Kumagai, and Y. Sanada,J. Mater. Sci.,35, 2087 (2000).
Hanwha Chemical Corporation, Korea Patent 98-47218, 1998.
J. K. Brown and W. R. Lander,Fuel,39, 87 (1963).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yang, K.S., Choi, Y.O., Kim, Y.M. et al. Preparations of carbon fibers from precursor pitches synthesized with coal tar or petroleum residue oil. Fibers Polym 1, 97–102 (2000). https://doi.org/10.1007/BF02875192
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02875192