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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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

李同起^a,b;刘秀军^c;王成扬^a; 王慧^a

^a School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
^b National Key Laboratory of Advanced Functional Composite Materials, Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China
^c School of Material Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-10-28 发布日期:2006-10-28
通讯作者: 李同起

Structural Characteristics of Mesophase Spheres Prepared from Coal Tar Pitch Modified by Phenolic Resin

LITongqi^a,b;LIUXiujun^c;WANGChengyang^a; WANGHui^a

^a School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
^b National Key Laboratory of Advanced Functional Composite Materials, Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China
^c School of Material Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China

Received:1900-01-01 Revised:1900-01-01 Online:2006-10-28 Published:2006-10-28
Contact: LI Tongqi

摘要/Abstract

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 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.

关键词: mesocarbon microbeads;mesophase;phenolic resin;scanning electron microscopy

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.

Key words: mesocarbon microbeads, mesophase, phenolic resin, scanning electron microscopy

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]. , DOI: .

LITongqi,LIUXiujun,WANGChengyang, WANGHui. Structural Characteristics of Mesophase Spheres Prepared from Coal Tar Pitch Modified by Phenolic Resin[J]. , DOI: .

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