| 新型Ziegler-Natta催化剂用于丙烯多段聚合制备抗冲聚丙烯 |
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| 引用本文： | 姜涛,陈伟,赵峰,刘月祥,覃雪.新型Ziegler-Natta催化剂用于丙烯多段聚合制备抗冲聚丙烯[J].化工学报,2005,56(12):2342-2345. |
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| 作者姓名： | 姜涛 陈伟 赵峰 刘月祥 覃雪 |
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| 作者单位： | 北京化工大学材料学院，北京 100029;中石化北京化工研究院，北京 100013;3.大庆石油学院化学化工学院，大庆 163318 ; |
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| 基金项目： | 国家高技术研究发展计划（2002AA333060）. |
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| 摘 要： | 聚丙烯（PP）质轻、价廉，具有良好的加工性能，应用范围广泛．PP的很多应用领域要求它应具有较好的韧性．均聚PP在低温时变脆，抗冲PP是通过在均聚PP中加入橡胶制备的．对PP以提高其抗冲击强度为目的的改性大多用共混的方法，将PP和两种或两种以上的其他聚合物以机械共混的方法进行混合，得到一种宏观上均匀的聚合物共混物，其性能有一定的提高．
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| 关 键 词： | Ziegler-Natta催化剂 Mg/Si载体 丙烯多段聚合 抗冲聚丙烯 |
| 文章编号： | 0438-1157（2005）12-2342-04 |
| 收稿时间： | 03 2 2005 12:00AM |
| 修稿时间： | 2005-03-022005-04-20 |
Novel spherical Ziegler-Natta catalyst used in propylene multistage polymerization for high impact polypropylene |
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| JIANG Tao,CHEN Wei,ZHAO Feng,LIU Yuexiang,QIN Xue.Novel spherical Ziegler-Natta catalyst used in propylene multistage polymerization for high impact polypropylene[J].Journal of Chemical Industry and Engineering(China),2005,56(12):2342-2345. |
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| Authors: | JIANG Tao CHEN Wei ZHAO Feng LIU Yuexiang QIN Xue |
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| Affiliation: | 1. Department of Material Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China; 2.Beijing Research Institute of Chemical Industry, SINOPEC, Beijing 100013, China ; 3. Department of Chemical Engineering, Daqing Petroleum Institute, Daqing 163318, Heilongjiang, China |
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| Abstract: | The MgCl2/SiO2 complex support was prepared by spray drying using alcoholic suspension which contained MgCl2 and SiO2. The complex support reacted with TICl4 and di-n-butyl phthalate, give the catalyst for propylene polymerization. The catalyst was spherical and porous with high specific surface area. The multistage polymerization of propylene for high impact propylene was studied with the catalyst system. It was found that the final high impact polypropylene after two stages of reaction was still freeflowing, spherical granules. Homopolypropylene with pore diameter between 100 nm and 10000 nm was suitable for EPR to fill in during ethylene propylene copolymerization. The high impact polypropylene showed good balance between stiffness and toughness. |
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| Keywords: | Ziegler-Natta catalyst Mg/Si support propylene multistage polymerization high impact polypropylene |
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