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Effect of the pre-treated pyrolysis fuel oil: coal tar pitch ratio on the spinnability and oxidation properties of isotropic pitch precursors and the mechanical properties of derived carbon fibers

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Abstract

Pitch precursors affording excellent spinnability, high-level oxidation-resistance, and good carbonization yields were prepared by bromination–dehydrobromination of various ratios of pyrolyzed fuel oil and coal tar pitch. The pitches exhibited spinnabilities that were much better than those of pitches prepared via simple distillation. A pitch prepared using a 1:2 ratio of fuel oil and coal tar pitch exhibited the best tensile strength. Pitch fibers of diameter 8.9 ± 0.1 μm were stabilized at 270 °C without soaking time after heating at a rate of 0.5 °C/min and carbonized at 1100 °C for 1 h after heating at 5 °C/min. The resulting carbon fibers exhibited a tensile strength, elongation, Young’s modulus, and average diameter of 1700 ± 170 MPa, 1.6 ± 0.1%, 106 ± 37 GPa, and 7.1 ± 0.2 μm, respectively.

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Acknowledgements

This work was supported by the Technology Innovation Program [10082582, Development of petroleum-based high quality mesophase pitch and high yield mesophase pitch for premium carbon materials] funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea).

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Authors and Affiliations

  1. Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, 816-8580, Japan

    Jinchang Liu, Hiroki Shimanoe, Koji Nakabayashi, Jin Miyawaki & Seong-Ho Yoon

  2. Center for C-Industry Incubation Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro Yuseong-gu, Daejeon, 34114, Republic of Korea

    Jong-Eun Choi, Seunghyun Ko & Young-Pyo Jeon

  3. Advanced Materials and Chemical Engineering, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea

    Jong-Eun Choi & Young-Pyo Jeon

  4. Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka, 816-8580, Japan

    Koji Nakabayashi, Jin Miyawaki & Seong-Ho Yoon

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  1. Jinchang Liu
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  2. Hiroki Shimanoe
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Correspondence to Young-Pyo Jeon or Seong-Ho Yoon.

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Liu, J., Shimanoe, H., Choi, JE. et al. Effect of the pre-treated pyrolysis fuel oil: coal tar pitch ratio on the spinnability and oxidation properties of isotropic pitch precursors and the mechanical properties of derived carbon fibers. Carbon Lett. 29, 193–202 (2019). https://doi.org/10.1007/s42823-019-00020-4

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  • DOI: https://doi.org/10.1007/s42823-019-00020-4

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