Abstract

The carbonization and graphitization of carbon/carbon (C/C) composites prepared from mesocarbon microbeads (MCMB) and chopped carbon fiber (CCF) have been studied with a wide range of temperatures, CCF contents and MCMB sizes. Three different sizes of MCMB were prepared with coal tar pitch at three temperatures, 420, 430 and 440 °C, and identified as about 12.8, 16.0 and 20.1 µm, respectively. Each size of MCMB was mixed with CCFs at ratios of 2, 4, 6 and 8 wt. % and formed into block shape. After carbonization at 1200 °C, carbonized C/C blocks (CCBs) were graphitized at 2000, 2400 and 2800 °C. The CCB prepared with CCF content of 2 wt. % and an MCMB size of 16.0 µm exhibited the highest flexural strength of about 151 MPa. The graphitized C/C block (GCB) with CCF content of 2 wt. %, which was graphitized at 2000 °C showed the highest flexural strength of about 159 MPa.

Details

Title
Mechanical and electrical properties of MCMB/Chopped carbon fiber composite with different bead size
Author
Ui-Su, Im 1 ; Kim, Jiyoung 2 ; Lee, Byung-Rok 3 ; Peck Dong-Hyun 1 ; Jung Doo-Hwan 1   VIAFID ORCID Logo 

1  Korea University of Science and Technology, Department of Advanced Energy and Technology, Daejeon, Republic of Korea (GRID:grid.412786.e) (ISNI:0000 0004 1791 8264); Korea Institute of Energy Research, New & Renewable Energy Research Division, Daejeon, Republic of Korea (GRID:grid.418979.a) (ISNI:0000 0001 0691 7707) 
2  Sungkyunkwan University, School of Chemical Engineering, Suwon-si, Republic of Korea (GRID:grid.264381.a) (ISNI:0000 0001 2181 989X) 
3  Korea Institute of Energy Research, New & Renewable Energy Research Division, Daejeon, Republic of Korea (GRID:grid.418979.a) (ISNI:0000 0001 0691 7707) 
Publication year
2019
Publication date
2019
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41598-019-43480-4
ProQuest document ID
2221789697
Copyright
© The Author(s) 2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.