抄録
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.
| 元の言語 | 英語 |
|---|---|
| 記事番号 | 106291 |
| ジャーナル | Fuel Processing Technology |
| 巻 | 199 |
| DOI | |
| 出版物ステータス | 出版済み - 3 2020 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Fuel Technology
- Energy Engineering and Power Technology
これを引用
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.
：: Fuel Processing Technology, 巻 199, 106291, 03.2020.研究成果: ジャーナルへの寄稿 › 記事
}
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 -