烯烃聚合催化剂的研究进展

获得高性能聚烯烃材料是化学家们不断的追求。烯烃聚合催化剂的结构对其催化性能有重要影响，而聚烯烃的改性则能够改善聚合物实际应用中表面形貌、本体性能中存在的缺陷，如通过改性可增加聚合物韧性、降低聚合物表面的摩擦系数或提升表面能等。 本文系统总结了金属烯烃聚合催化剂研究进展，包括Ziegler-Natta催化剂、茂金属催化剂、非茂金属催化剂的结构及调控策略，探讨了位阻效应、双金属协同效应以及其他效应对催化效果的影响。

Research Progress of Olefin Polymerization Catalysts

It is a constant pursuit of chemists to get high-performance polyolefin materials. The structure of the olefin polymerization catalyst plays a crucial role on its catalytic performance. Meanwhile， the defects in polyolefin applications highly depend on their structure modifications， e.g. the toughness of polymer can be increased， the friction coefficient of polymer surface can be reduced or the surface energy can be increased by modification. This review summarizes the research progress of metal olefin polymerization catalysts， including Ziegler-Natta catalysts， metallocene catalysts， non-metallocene catalysts and control strategies. The effects of steric hindrance， bimetallic synergism and fluorine effect of these catalysts are discussed.