| 茂金属聚乙烯结构与流变性能的研究 |
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| 引用本文： | 毛立新,李淼,武德珍. 茂金属聚乙烯结构与流变性能的研究[J]. 北京化工大学学报(自然科学版), 2000, 27(2): 93-94 |
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| 作者姓名： | 毛立新 李淼 武德珍 |
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| 作者单位： | 1)北京化工大学材料科学与工程学院, 北京 100029; 2) 齐鲁石化股份有限公司, 淄博 255400 |
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| 摘 要： | 借助GPC、FTIR、Instron流变仪等仪器对茂金属聚乙烯 (mPE)的结构与流变性能进行了较为系统的研究, 并将mPE的结构与流变性能分别与相应的线性低密度聚乙烯 (LLDPE)、低密度聚乙烯 (LDPE)树脂进行了比较, 发现由于mPE树脂的分子量分布窄、相对支化度低 ,导致其剪切粘度对剪切速率和温度的敏感性比LDPE差, 而与LLDPE较为接近。实验所得数据为mPE的加工应用提供了有价值的基础数据。
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| 关 键 词： | 茂金属 聚乙烯 结构 流变性能 茂金属 聚乙烯 结构 流变性能 |
| 收稿时间： | 1999-03-20 |
Study on the structure and rheological properties of metallocene polyethylenes |
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| MAO Li xin ) LI Miao ) WU De zhen ) MA Lan ) YANG Ming jun ) WANG Jian ). Study on the structure and rheological properties of metallocene polyethylenes[J]. Journal of Beijing University of Chemical Technology, 2000, 27(2): 93-94 |
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| Authors: | MAO Li xin ) LI Miao ) WU De zhen ) MA Lan ) YANG Ming jun ) WANG Jian ) |
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| Affiliation: | 1）College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China; 2） Qi Lu Petro-Chem Ltd. CO., Zibo 255400, China |
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| Abstract: | The structure and rheological properties of metallocene polyethylenes (mPE) were studied systematically by means of GPC, FTIR and Instron rheometer, and were also compared with that of traditional polyethylenes such as LDPE and LLDPE. It was found that the sensitivity of the shear viscosity of mPE to shear rate and temperature was lower than that of LDPE and LLDPE, because of its narrower molecular weight distribution and the lower branching degree. This could imply that the processability of mPE is poorer than that of LDPE and similar to LLDPE. These results would provide valuably basic data to the application study of mPE. |
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| Keywords: | metallocene polyethylene structure rheological property |
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