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Journal of Inorganic Materials

Journal of Inorganic Materials >

2008 , Vol. 23 >Issue 3: 519 - 524

DOI: https://doi.org/10.3724/SP.J.1077.2008.00519

Research Paper

Carbon Materials of High Density and Strength Prepared from Oxidized Mesophase Pitch Grains

  • SONG Yong-Zhong ,
  • ZHAI Geng-Tai ,
  • SHI Jing-Li ,
  • LI Gui-Sheng ,
  • GUO Quan-Gui ,
  • SONG Jin-Ren ,
  • LIU Lang
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  • (1. Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; 2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China)

Received date: 2007-07-11

  Revised date: 2007-10-18

  Online published: 2008-05-20

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Abstract

Carbon grains for binderless molding were prepared by oxidization treatment of mesophase pitch at different temperatures, and carbon materials were prepared. The effects of oxidation temperature, molding pressure, and heat-treatment temperature on the physical properties of the carbon materials were investigated. Results indicate that increase in molding pressure significantly increases mechanical strength of the resulting carbon materials. The resultant carbon materials with homogeneous fine-mosaic texture, high density and strength are obtained when the grains are oxidized at 200℃. The high-performance carbon materials are obtained when the grains oxidized at 200℃, molded at 150MPa and then graphitized at 2200℃, whose density, porosity, bending strength, and compressive strength are 2.02g/cm3, 2.03%, 70.3MPa, 123.3MPa, respectively. Results show that oxidized mesophase pitch is a good precursor for preparing high-performance carbon materials.

Key words： mesophase pitch; carbon/graphite; oxidation; mechanical properties

Cite this article

SONG Yong-Zhong , ZHAI Geng-Tai , SHI Jing-Li , LI Gui-Sheng , GUO Quan-Gui , SONG Jin-Ren , LIU Lang . Carbon Materials of High Density and Strength Prepared from Oxidized Mesophase Pitch Grains[J]. Journal of Inorganic Materials, 2008 , 23(3) : 519 -524 . DOI: 10.3724/SP.J.1077.2008.00519

References

[1] Fitzer E. Carbon, 1987, 25 (2): 163-190.
[2] Blazewicz S, Blocki J, Chlopek J, et al. Carbon, 1996, 34 (11): 1393-1399.
[3] Miyazaki K, Hagio T, Kobayashi K. J. Mater. Sci., 1981, 16: 752-762.
[4] Gao X, Liu L, Guo Q, et al. Comp. Sci. Technol., 2007, 67: 525-529.
[5] Tong Q, Shi J, Song Y, et al. Carbon, 2004, 42: 2495-2500.
[6] Qiu H, Song Y, Liu L, et al. Carbon, 2003, 41: 973-978.
[7] Ogawa I, Kobaysshi K, Honda H. Tanso, 1978, 93: 57-62.
[8] Mochida I, Korai Y, Fujitsu H, et al. J. Mater. Sci., 1982, 17: 525-532.
[9] Ogawa I, Hagio T, Yoshida H, et al. Tanso, 1982, 109: 41-45.
[10] Wang Y G, Korai Y, Mochida I. Carbon, 1999, 37: 1049-1057.
[11] Song Y, Zhai G, Li G, et al. Carbon, 2004, 42: 1427-1433.
[12] Mochida I, Fujiura R, Kojima T, et al. Carbon, 1994, 32 (5): 961-969.
[13] Asano K, Tamura H, Nezu Y, et al. US Patent 4293533, 1997.
[14] 马兆昆, 史景利, 刘 朗, 等(MA Zhao-Kun, et al). 无机材料学报(Journal of Inorganic Materials), 2006, 21 (5): 1167-1172.
[15] Iwashita N, Park C R, Fujimoto H, et al. Carbon, 2004, 42: 705-714.
[16] Hoffmann W R, Huttinger K J. Carbon, 1993, 31: 263-268.
[17] Zhou C, McGinn P J. Carbon, 2006, 44 (9): 1673-1681.
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