| 酚醛树脂改性煤焦油沥青中制得的中间相球体的结构特征 |
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| 引用本文： | 李同起,刘秀军,王成扬,王慧.酚醛树脂改性煤焦油沥青中制得的中间相球体的结构特征[J].中国化学工程学报,2006,14(5):660-664. |
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| 作者姓名： | 李同起 刘秀军 王成扬 王慧 |
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| 作者单位： | 天津大学;天津大学;天津大学 |
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| 摘 要： | Mesocarbon microbeads （MCMB） were prepared from coal tar pitch modified by phenolic resin and from the same pitch modified by phenolic resin and hexamethylenetetramine at 440℃ for lh. By investigating the morphology of mesophase spheres and the structure of the MCMB carbonized at 1000℃ for lh using scanning electron microscope （SEM） and XRD, it was found that phenolic resin accelerated the formation and coalescence of mesophase spheres. Some of the obtained MCMB were hi- or tri-spheres with the distorted microtextural carbon layers. Hexamethylenetetramine in the pitch modified by phenolic resin accelerated the condensation of phenolic resin and consequently expedited the combination of mesophase spheres, which was proved by the formation of some tetra-spheres. Owing to the cross-linkage of the additives, MCMB with complex structure were obtained.
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| 关 键 词： | 酚醛树脂 改性 煤焦油 沥青 结构特征 中间相球体 |
| 收稿时间： | 2005-03-18 |
| 修稿时间： | 2005-03-182006-08-30 |
Structural Characteristics of Mesophase Spheres Prepared from Coal Tar Pitch Modified by Phenolic Resin |
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| LITongqi,LIUXiujun,WANGChengyang,WANGHui.Structural Characteristics of Mesophase Spheres Prepared from Coal Tar Pitch Modified by Phenolic Resin[J].Chinese Journal of Chemical Engineering,2006,14(5):660-664. |
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| Authors: | LITongqi LIUXiujun WANGChengyang WANGHui |
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| Affiliation: | 1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;2. National Key Laboratory of Advanced Functional Composite Materials, Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China;3. School of Material Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China;1. Institute of Chemistry, Military Technical Academy, 00-908 Warsaw, Poland;2. Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44242, USA;1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, PR China;2. Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, Wuhan University of Science and Technology, Wuhan, 430081, PR China;1. Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;3. Department of Materials, University of Oxford, Oxford OX1 3PH, UK;4. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China |
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| Abstract: | Mesocarbon microbeads (MCMB) were prepared from coal tar pitch modified by phenolic resin and from the same pitch modified by phenolic resin and hexamethylenetetramine at 440℃ for 1h. By investigating the morphology of mesophase spheres and the structure of the MCMB carbonized at 1000℃ for 1h using scanning electron microscope (SEM) and XRD, it was found that phenolic resin accelerated the formation and coalescence of mesophase spheres. Some of the obtained MCMB were bi- or tri-spheres with the distorted microtextural carbon layers. Hexamethylenetetramine in the pitch modified by phenolic resin accelerated the condensation of phenolic resin and consequently expedited the combination of mesophase spheres, which was proved by the formation of some tetra-spheres. Owing to the cross-linkage of the additives, MCMB with complex structure were obtained. |
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| Keywords: | mesocarbon microbeads mesophase phenolic resin scanning electron microscopy |
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