两种丙烯聚合用球形Ziegler-Natta催化剂的性能研究  

Study on Properties of Two Spherical Ziegler-NattaCatalysts for Propylene Polymerization

作　　者：郭钦生 任合刚 刘智博 程刘峰 董泽 Guo Qinsheng;Ren Hegang;Liu Zhibo;Cheng Liufeng;Dong Ze(Maoming Branch of SINOPEC,Maoming,Guangdong,525021;School of Material Science and Engineering,Guangdong University of Petrochemical Technology,Maoming,Guangdong,525099;Shandong Donghong Pipe Industry Co.,Ltd.,Jining,Shandong,273100)

机构地区：[1]中国石油化工股份有限公司茂名分公司,广东茂名525021 [2]广东石油化工学院材料科学与工程学院,广东茂名525099 [3]山东东宏管业股份有限公司,山东济宁273100

出　　处：《现代塑料加工应用》2024年第1期5-7,22,共4页Modern Plastics Processing and Applications

基　　金：广东石油化工学院人才引进项目(2019rc036);茂名绿色化工研究院应用创新项目(MMGCIRI-2022YFJH-032);茂名市科技计划项目(230505094558243)。

摘　　要：采用扫描电子显微镜、激光粒度仪、密度仪和熔体流动速率仪(MFR)等研究了2种丙烯聚合用球形齐格勒-纳塔(Ziegler-Natta)催化剂(记为1#和2#)的性能。结果表明:与2#相比,1#的平均粒径更小,粒径分布更宽,活性更高,对氢气更敏感,且所得聚丙烯(PP)堆积密度更高,但PP颗粒粒径较小。不同外给电子体对丙烯聚合的影响不同。采用二环戊基二甲氧基硅烷为外给电子体时,2种催化剂活性均最高,所得PP的MFR均最小。The properties of two spherical Ziegler-Natta catalysts(referred to as 1#and 2#)for propylene polymerization were investigated by scanning electron microscopy,laser particle size analyzer,densitometer and melt flow rate analyzer(MFR).The results show that compared with 2#,1#has a smaller average particle size,a slightly wider size distribution,higher activity and is more sensitive to hydrogen,the resulting polypropylene(PP)has a higher packing density,but the PP particle size is smaller.Different external electron donors have different effects on propylene polymerization.When using dicyclopentyldimethoxysilane as the external electron donor,both catalysts have the highest activity and MFR of the resulting PP is the smallest.

关 键 词：ZIEGLER-NATTA催化剂 聚合 外给电子体 聚丙烯 

分 类 号：TQ426[化学工程] TQ325.14