Effect of erucic acid on the rheological and surface properties of coal tar pitch |
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| Affiliation: | 1. Department of Chemical and Process Engineering, University of Canterbury, Private Bag 4800, Christchurch, New Zealand;2. Biomolecular Interaction Centre, University of Canterbury, Private Bag 4800, Christchurch, New Zealand;3. Department of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand;4. Department of Electrical and Computer Engineering, University of Canterbury, Private Bag 4800, Christchurch, New Zealand;1. School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, 110016, China;2. School of Traditional Chinese Material Medica, Shenyang pharmaceutical University, Shenyang, 110016, China;3. Key Laboratory of Structure-based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China;4. Department of pharmacology, Shenyang medical colleges, Shenyang, 110034, China;1. College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;2. Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou 221116, Jiangsu, China;1. National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai, 200237, PR China;2. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, PR China;1. AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059, Cracow, Poland;2. SGL Carbon Polska S.A., 47-400, Raciborz ul., Piastowska 29, Poland |
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| Abstract: | Coal tar pitch (CTP) was modified using erucic acid, CH3(CH2)7CH=CH(CH2)11COOH, and the rheological and surface properties of the modified CTP were evaluated. The effect of erucic acid was investigated using a rotational viscometer as well as by drop and weight tests. The modified CTPs were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy following a carbonization process. The results showed significant differences in several properties between the CTP and modified CTPs, such as decreases in viscosity, wetting temperature, and softening point when erucic acid content was 1–3 wt% of CTP. An improvement in bonding between the coke and the modified CTP can be achieved when the coke value remained 62%. Moreover, a modification mechanism was proposed to explain the physical plastification of CTP modified with erucic acid. |
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| Keywords: | Coal tar pitch Erucic acid Rheological property Adhesion |
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