| 烯烃聚合过程的分形演化及其生长模型 |
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| 引用本文： | 霍超,孟灋,任晓红,阳永荣,戎顺熙.烯烃聚合过程的分形演化及其生长模型[J].中国化学工程学报,2003,11(1):33-37. |
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| 作者姓名： | 霍超 孟灋 任晓红 阳永荣 戎顺熙 |
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| 作者单位： | [1]CollegeofChemicalEngineering,ZhejiangUniversityofTechnology,Hangzhou310014,China [2]DepartmentofChemicalEngineering,ZhejiangUniversity,Hangzhou310027,China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (No. 29706010, No. 20203016). |
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| 摘 要： | The surface morphology of Ti-Mg supported catalyst and the polyethylene particles are studied using scanning electron microscope(SEM) technology.The results show that either the catalyst‘s surface or polymer particle‘s surface is irregular and has fractal characteristics,which can be described by fractal parameter.The more interesting discovery is that the surface fractal dimension values of the polymer particles vary periodically with the polymerization time.We call this phenomenon fractal evolution,which can be divided into the “revolution“ stage and the “evolution“ stage,And then we present polymerization fractal growing model(PFGM),and successfully describe and /or predict the whole evolving process of the polyethylene particle morphology under the different slurry polymerization(including pre-polymerization) conditions without H2.
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| 关 键 词： | 烯烃 聚合反应 分形演化 生长模型 聚合过程 聚烯烃 |
| 修稿时间： | |
Fractal Evolving Theory and Growing Model of Olefin Polymerization Process |
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| HUO Chao,MENG Jun,REN Xiaohong,Yang Yongrong,Rong Shunxi.Fractal Evolving Theory and Growing Model of Olefin Polymerization Process[J].Chinese Journal of Chemical Engineering,2003,11(1):33-37. |
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| Authors: | HUO Chao MENG Jun REN Xiaohong Yang Yongrong Rong Shunxi |
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| Affiliation: | College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China Department of Electrical Engineering, Zhejiang University, Hangzhou 310027, China Department of Chemical Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | The surface morphology of Ti-Mg supported catalyst and the polyethylene particles are studied using scanning electron microscope(SEM) technology. The results show that either the catalyst's surface or polymer particle's surface is irregular and has fractal characteristics, which can be described by fractal parameter. The more interesting discovery is that the surface fractal dimension values of the polymer particles vary periodically with the polymerization time. We call this phenomenon fractal evolution, which can be divided into the "revolution" stage and the "evolution" stage. And then we present polymerization fractal growing model (PFGM), and successfully describe and/or predict the whole evolving process of the polyethylene particle morphology under the different slurry polymerization (including pre-polymerization) conditions without H2. |
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| Keywords: | polyethylene catalyst fractal evolution theory surface morphology polymerization fractal growing model |
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