Rheological properties of mesophase pitch investigated by the Giseeler fluidity method

JIN Ming-lin; CHENG Jie-ling; WANG Lian-xing; JIN Shuang-ling; ZHANG Rui

doi:10.1016/S1872-5805(15)60183-4

Volume 30 Issue 2

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Article Navigation > New Carbon Mater. > 2015 > 30(2): 176-180

JIN Ming-lin, CHENG Jie-ling, WANG Lian-xing, JIN Shuang-ling, ZHANG Rui. Rheological properties of mesophase pitch investigated by the Giseeler fluidity method. New Carbon Mater., 2015, 30(2): 176-180. doi: 10.1016/S1872-5805(15)60183-4

Citation:

JIN Ming-lin, CHENG Jie-ling, WANG Lian-xing, JIN Shuang-ling, ZHANG Rui. Rheological properties of mesophase pitch investigated by the Giseeler fluidity method. New Carbon Mater., 2015, 30(2): 176-180. doi: 10.1016/S1872-5805(15)60183-4

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Rheological properties of mesophase pitch investigated by the Giseeler fluidity method

doi: 10.1016/S1872-5805(15)60183-4

School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China

Funds: Capacity Building Program of Shanghai Local Universities (12160503600); First-class Discipline Construction Fund of Shanghai Municipal Education Commission (J201212); Shanghai Science and Technology Development Fund (09520500700); National Natural Science Foundation of China (U1332107); Key Discipline Construction Fund of Composite Materials of Shanghai Institute of Technology (10210Q140001).

Received Date: 2015-02-11
Accepted Date: 2015-05-04
Rev Recd Date: 2015-04-12
Publish Date: 2015-04-28

Abstract

Abstract

The Giseeler fluidity method was used to investigate the rheological properties of pitch with and without heat treatment from room temperature to 520 ℃. Results show that the fluidity has a good repeatability at different temperatures under different heating rates. The fluidity of the raw pitch slowly increases from 253 to 282 ℃, then increases exponentially from 282 to 311 ℃ near the softening temperature, and finally remains unchanged from 311 to 498 ℃. This changing pattern of fluidity with temperature has also been found for heat-treated mesophase pitch and can be formulated by the Arrhenius equation, from which the viscous flow activation energy can be obtained. The toluene-insoluble fraction increases from 67.3% to 88.7% with heat-treatment time and the flow activation energy of the treated mesophase pitch in the Newtonian fluid region at low temperature range is between 203.6 and 294 kJ/mol.
- Rheological properties,
- Giseeler fluidity instrument,
- High temperature coal tar pitch,
- Mesophase pitch

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References(15)

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