Effect of oxygen-introduced pitch precursor on the properties and structure evolution of isotropic pitch-based fibers during carbonization and graphitization

Kui Shi, Jianxiao Yang, Jun Li, Xiaxiang Zhang, Wei Wu, Hongbo Liu, Seong Ho Yoon, Xuanke Li

Research output: Contribution to journalArticle

Abstract

Two ethylene tar-derived isotropic pitch-based fibers were prepared from nitrogen-distilled pitch (NDP) and air-blown pitch (ABP). The resultant fibers were carbonized at different temperatures to investigate the effect of the oxygen-introduced pitch precursor on the properties and structure evolution of fibers during carbonization and graphitization. The tensile strength of the ABP-derived carbon fibers (A-CFs) was higher than that of the NDP-derived carbon fibers (N-CFs) below 1200 °C because more gas was released from the N-CFs during carbonization. However, the mechanical properties of the A-CFs and N-CFs decreased significantly at 1400 °C, which resulted from defects that were produced by the removal of oxygen-containing gas. Above 1400 °C, the mechanical properties improved slightly, and the interlayer spacing decreased with an increase in heat-treatment temperature for two series fibers as a result of the rearrangement and development of microcrystallites. The A-CFs had a lower Young's modulus and a higher electrical resistivity than the N-CFs, because the cross-linked structure in the oxygen-introduced pitch precursor impeded the orientation of its fibers during carbonization and graphitization.

Original languageEnglish
Article number106291
JournalFuel Processing Technology
Volume199
DOIs
Publication statusPublished - Mar 2020

Fingerprint

Graphitization
Carbonization
Carbon fibers
Oxygen
Fibers
Nitrogen
Gases
Tars
Mechanical properties
Tar
Air
carbon fiber
Ethylene
Tensile strength
Elastic moduli
Heat treatment
Temperature
Defects

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

Effect of oxygen-introduced pitch precursor on the properties and structure evolution of isotropic pitch-based fibers during carbonization and graphitization. / Shi, Kui; Yang, Jianxiao; Li, Jun; Zhang, Xiaxiang; Wu, Wei; Liu, Hongbo; Yoon, Seong Ho; Li, Xuanke.

In: Fuel Processing Technology, Vol. 199, 106291, 03.2020.

Research output: Contribution to journalArticle

@article{5cff0cdef99a47d881f46652b2ddea5c,
title = "Effect of oxygen-introduced pitch precursor on the properties and structure evolution of isotropic pitch-based fibers during carbonization and graphitization",
abstract = "Two ethylene tar-derived isotropic pitch-based fibers were prepared from nitrogen-distilled pitch (NDP) and air-blown pitch (ABP). The resultant fibers were carbonized at different temperatures to investigate the effect of the oxygen-introduced pitch precursor on the properties and structure evolution of fibers during carbonization and graphitization. The tensile strength of the ABP-derived carbon fibers (A-CFs) was higher than that of the NDP-derived carbon fibers (N-CFs) below 1200 °C because more gas was released from the N-CFs during carbonization. However, the mechanical properties of the A-CFs and N-CFs decreased significantly at 1400 °C, which resulted from defects that were produced by the removal of oxygen-containing gas. Above 1400 °C, the mechanical properties improved slightly, and the interlayer spacing decreased with an increase in heat-treatment temperature for two series fibers as a result of the rearrangement and development of microcrystallites. The A-CFs had a lower Young's modulus and a higher electrical resistivity than the N-CFs, because the cross-linked structure in the oxygen-introduced pitch precursor impeded the orientation of its fibers during carbonization and graphitization.",
author = "Kui Shi and Jianxiao Yang and Jun Li and Xiaxiang Zhang and Wei Wu and Hongbo Liu and Yoon, {Seong Ho} and Xuanke Li",
year = "2020",
month = "3",
doi = "10.1016/j.fuproc.2019.106291",
language = "English",
volume = "199",
journal = "Fuel Processing Technology",
issn = "0378-3820",
publisher = "Elsevier",

}

TY - JOUR

T1 - Effect of oxygen-introduced pitch precursor on the properties and structure evolution of isotropic pitch-based fibers during carbonization and graphitization

AU - Shi, Kui

AU - Yang, Jianxiao

AU - Li, Jun

AU - Zhang, Xiaxiang

AU - Wu, Wei

AU - Liu, Hongbo

AU - Yoon, Seong Ho

AU - Li, Xuanke

PY - 2020/3

Y1 - 2020/3

N2 - Two ethylene tar-derived isotropic pitch-based fibers were prepared from nitrogen-distilled pitch (NDP) and air-blown pitch (ABP). The resultant fibers were carbonized at different temperatures to investigate the effect of the oxygen-introduced pitch precursor on the properties and structure evolution of fibers during carbonization and graphitization. The tensile strength of the ABP-derived carbon fibers (A-CFs) was higher than that of the NDP-derived carbon fibers (N-CFs) below 1200 °C because more gas was released from the N-CFs during carbonization. However, the mechanical properties of the A-CFs and N-CFs decreased significantly at 1400 °C, which resulted from defects that were produced by the removal of oxygen-containing gas. Above 1400 °C, the mechanical properties improved slightly, and the interlayer spacing decreased with an increase in heat-treatment temperature for two series fibers as a result of the rearrangement and development of microcrystallites. The A-CFs had a lower Young's modulus and a higher electrical resistivity than the N-CFs, because the cross-linked structure in the oxygen-introduced pitch precursor impeded the orientation of its fibers during carbonization and graphitization.

AB - Two ethylene tar-derived isotropic pitch-based fibers were prepared from nitrogen-distilled pitch (NDP) and air-blown pitch (ABP). The resultant fibers were carbonized at different temperatures to investigate the effect of the oxygen-introduced pitch precursor on the properties and structure evolution of fibers during carbonization and graphitization. The tensile strength of the ABP-derived carbon fibers (A-CFs) was higher than that of the NDP-derived carbon fibers (N-CFs) below 1200 °C because more gas was released from the N-CFs during carbonization. However, the mechanical properties of the A-CFs and N-CFs decreased significantly at 1400 °C, which resulted from defects that were produced by the removal of oxygen-containing gas. Above 1400 °C, the mechanical properties improved slightly, and the interlayer spacing decreased with an increase in heat-treatment temperature for two series fibers as a result of the rearrangement and development of microcrystallites. The A-CFs had a lower Young's modulus and a higher electrical resistivity than the N-CFs, because the cross-linked structure in the oxygen-introduced pitch precursor impeded the orientation of its fibers during carbonization and graphitization.

UR - http://www.scopus.com/inward/record.url?scp=85076060123&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85076060123&partnerID=8YFLogxK

U2 - 10.1016/j.fuproc.2019.106291

DO - 10.1016/j.fuproc.2019.106291

M3 - Article

AN - SCOPUS:85076060123

VL - 199

JO - Fuel Processing Technology

JF - Fuel Processing Technology

SN - 0378-3820

M1 - 106291

ER -