不同粒径的中间相炭微球/短切碳纤维复合材料的机电性能

Mechanical and electrical properties of MCMB/Chopped carbon fiber composite with different bead size.

作者信息

Im Ui-Su, Kim Jiyoung, Lee Byung-Rok, Peck Dong-Hyun, Jung Doo-Hwan

机构信息

Department of Advanced Energy and Technology, Korea University of Science and Technology, 102 Gajeong-ro, Yuseong-gu, Daejeon, 305350, Republic of Korea.

New & Renewable Energy Research Division, Korea Institute of Energy Research, 217 Gajeong-ro, Yuseong-gu, Daejeon, 34129, Republic of Korea.

出版信息

Sci Rep. 2019 May 8;9(1):7065. doi: 10.1038/s41598-019-43480-4.

DOI:10.1038/s41598-019-43480-4

PMID:31068604

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6506510/

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.

摘要

研究了由中间相炭微球（MCMB）和短切碳纤维（CCF）制备的碳/碳（C/C）复合材料在不同温度、CCF含量和MCMB尺寸下的碳化和石墨化情况。用煤焦油沥青在420、430和440℃三个温度下制备了三种不同尺寸的MCMB，其尺寸分别约为12.8、16.0和20.1μm。将每种尺寸的MCMB与CCF按2、4、6和8 wt.%的比例混合，制成块状。在1200℃碳化后，将碳化的C/C块（CCB）在2000、2400和2800℃进行石墨化。CCF含量为2 wt.%且MCMB尺寸为16.0μm制备的CCB表现出最高的弯曲强度，约为151MPa。CCF含量为2 wt.%且在2000℃石墨化的石墨化C/C块（GCB）表现出最高的弯曲强度，约为159MPa。