| MgCl2/TiCl4催化剂中载钛量对丙烯聚合的影响 |
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| 引用本文： | 王剑峰,王立.MgCl2/TiCl4催化剂中载钛量对丙烯聚合的影响[J].宁波工程学院学报,2003,15(4):16-19. |
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| 作者姓名： | 王剑峰 王立 |
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| 作者单位： | 1. 宁波高等专科学校,浙江,宁波,315016
2. 浙江大学材化学院,浙江,杭州,310027 |
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| 基金项目： | 宁波市青年博士基金资助项目(项目编号:2003A62012). |
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| 摘 要： | 采用一釜球磨新制备方法，制备了三种不同载钛量的MgCl2／TiCl4催化剂，并与三乙基铝(Al(Et)3)结合，催化丙烯聚合，获得了具有新颖结构的聚丙烯材料。考察了MgCl2／TiCl4催化剂中载钛量对聚合活性、聚合动力学行为、聚合产物分子量及分子量分布等的影响。结果表明，载钛量为0．8％(wt)的MgCl2／TiCl4催化剂，聚合活性最大。同时还从聚合机理上对这些影响规律作了探讨。
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| 关 键 词： | MgCl2／TICl4催化剂 载钛量 丙烯聚合 分子量分布 聚合活性 催化剂结构 |
| 文章编号： | 1008-7109(2003)04-0016-04 |
| 修稿时间： | 2003年10月10 |
Effects of Ti - loaded Amount in Novel MgCl2 - Supported Ziegler - Natta Catalyst on Propylene Polymerization |
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| WANG Jian -feng,WANG Li.Effects of Ti - loaded Amount in Novel MgCl2 - Supported Ziegler - Natta Catalyst on Propylene Polymerization[J].Journal of Ningbo University of Technology,2003,15(4):16-19. |
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| Authors: | WANG Jian -feng WANG Li |
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| Abstract: | A novel MgCl2 - supported Ziegler - Natta ( Z - N) catalyst is prepared using a new one - pot ball milling method, which can effectively control the amount of Ti - load in the catalyst. Propylene polymerizations using these catalysts are investigated. The effects of the Ti -loaded amount on catalytic activity, polymerization kinetics, the molecular weight and its distribution are also studied in detail. It is found that the catalytic activity comes to maximum at Ti - loaded amount 0. 8 wt% in the novel MgCl2 - supported Z - N catalyst. Reasons for these phenomena are thus discussed. |
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| Keywords: | supported Ziegler-Natta catalyst propylene polymerization active center molecular weight distribution |
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