Isotropic Carbon and Graphite Fibers from Chemically Modified Coal-Tar Pitch

Kap Seung Yang, Dong Joon Lee, Seung Kon Ryu, Yozo Korai, Yong Joong Kim, Isao Mochida

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A precursor for a general purpose carbon fiber was prepared from coal tar pitch (CP) modified with 10% p-benzoquinone (BQ) at 380°C for 3 hours. Such a modification raised the softening of the pitch from 85°C to 271°C at a yield of 43%. The modified pitch was spun smoothly at a rate of 480 m/min into a fiber of 20 μm diameter. The fiber was stepwise stabilized at 236°C (5°C/min) and 312°C (1°C/min) for 3 hours at each temperature. Successively, carbonization and graphitization were performed at 1,000°C and 2,400°C, respectively, for one hour. Both the carbonized and graphitized fibers exhibited tensile strength of 570 MPa. The structural parameters of carbon and graphite fibers were their orientation values of 56.2 and 58.1 %, relatively low Lc(002) of 11.24 and 25 Å, and large interlayer spacing (d002) of 3.86 and 3.49 Å, respectively.

Original languageEnglish
Pages (from-to)518-524
Number of pages7
JournalKorean Journal of Chemical Engineering
Volume16
Issue number4
DOIs
Publication statusPublished - Jan 1 1999

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Coal Tar
Graphite fibers
Coal tar
Carbon fibers
Fibers
Graphitization
Carbonization
Tensile strength
Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Yang, K. S., Lee, D. J., Ryu, S. K., Korai, Y., Kim, Y. J., & Mochida, I. (1999). Isotropic Carbon and Graphite Fibers from Chemically Modified Coal-Tar Pitch. Korean Journal of Chemical Engineering, 16(4), 518-524. https://doi.org/10.1007/BF02698278

Isotropic Carbon and Graphite Fibers from Chemically Modified Coal-Tar Pitch. / Yang, Kap Seung; Lee, Dong Joon; Ryu, Seung Kon; Korai, Yozo; Kim, Yong Joong; Mochida, Isao.

In: Korean Journal of Chemical Engineering, Vol. 16, No. 4, 01.01.1999, p. 518-524.

Research output: Contribution to journalArticle

Yang, KS, Lee, DJ, Ryu, SK, Korai, Y, Kim, YJ & Mochida, I 1999, 'Isotropic Carbon and Graphite Fibers from Chemically Modified Coal-Tar Pitch', Korean Journal of Chemical Engineering, vol. 16, no. 4, pp. 518-524. https://doi.org/10.1007/BF02698278
Yang, Kap Seung ; Lee, Dong Joon ; Ryu, Seung Kon ; Korai, Yozo ; Kim, Yong Joong ; Mochida, Isao. / Isotropic Carbon and Graphite Fibers from Chemically Modified Coal-Tar Pitch. In: Korean Journal of Chemical Engineering. 1999 ; Vol. 16, No. 4. pp. 518-524.
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