| 二乙烯基苯改性煤沥青的流变行为 |
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| 引用本文： | 覃韬,林起浪. 二乙烯基苯改性煤沥青的流变行为[J]. 煤炭转化, 2007, 30(4): 55-58 |
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| 作者姓名： | 覃韬 林起浪 |
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| 作者单位： | 福州大学材料科学与工程学院,350108,福州;福州大学材料科学与工程学院,350108,福州 |
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| 基金项目： | 福建省青年科技人才创新基金 , 福州大学校科研和教改项目 , 福州大学校科研和教改项目 |
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| 摘 要： | 研究了二乙烯基苯(DVB)改性煤沥青的流变行为.采用SEM和EDAX对改性前后沥青的形貌和组成进行分析,采用旋转黏度计测试改性沥青的流变性能.研究表明:改性沥青中出现分布均匀的微纤;随着改性沥青中甲苯可溶物含量的减少,其黏性流动活化能变大;改性沥青的剪切速率越高,改性沥青的表现黏度越小.
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| 关 键 词： | DVB 煤沥青 改性 流变行为 |
| 修稿时间： | 2007-07-26 |
RHEOGICAL BEHAVIOR OF COAL TAR PITCH MODIFIED WITH DIVINYLBENZEN |
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| Qin Tao,Lin Qilang. RHEOGICAL BEHAVIOR OF COAL TAR PITCH MODIFIED WITH DIVINYLBENZEN[J]. Coal Conversion, 2007, 30(4): 55-58 |
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| Authors: | Qin Tao Lin Qilang |
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| Affiliation: | College of Materials Science and Engineering, Fuzhou University, 350108 Fuzhou |
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| Abstract: | Rheogical behavior of coal-tar pitch modified with divinylbenzen the presence of p-toluene sulfonic acid was studied in this paper.The morphologies and composition of coal tar pitch and the modified pitch were analyzed using scanning electron microscopy(SEM)and energy dispersive X-ray analysis(EDAX)respectively.Moreover,the rheogical properties of coal tar pitch and the modified pitch were measured using rotating coaxial-cylinder viscometer.The results show that there exist many micro-fibers with a uniform distributionin in the modified pitch.Moreover,the viscous activation energy(E)of the modified pitch becomes large with the decrease of toluene soluble(TS)content,and the apparent viscosity becomes small with the increase of shear rate. |
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| Keywords: | divinylbenzen coal-tar pitch modification rheogical behavior |
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