外给电子体对聚丙烯性能的影响

The Effects of External Donors on the Polypropylene Properties

综述了用Ziegler-Natta催化剂制备聚丙烯时加入的外给电子体对聚丙烯等规度、分子量分布和熔融指数的影响,并深入讨论了不同外给电子体组合对聚丙烯性能的影响。采用合适的外给电子体组合可以制备出高熔融指数、宽分子量分布的高性能聚丙烯。

This paper reviewed the effects of external donors on the isotacticity, molecular weight distribution and melt flow rate （MFR） of polypropylene prepared by Ziegler-Natta catalysts. The effects of mixtures of external donors on the properties of polypropylene were also reviewed. High performance polypropylene with high MFT and broad molecular weight distribution could be prepared with certain mixtures of external donors.