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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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内给电子体对Ziegler-Natta催化剂性能的影响
DOI: 10.3724/SP.J.1105.2013.12268, PP. 511-517
Keywords: 内给电子体,聚丙烯,Ziegler-Natta,邻苯二甲酸二异丁酯,环己二甲酸二异丁酯
Abstract:
研究了5种新型内给电子体对Ziegler-Natta催化剂结构和催化性能的影响.结果表明,使用两种不同制备工艺制备的氯化镁载体均为δ晶型,而不同的内给电子体的加入使得催化剂的氯化镁载体具有不同的微晶结构和形态.在催化剂制备阶段中,内给电子体的加入方式对催化剂的性能有很大的影响.在5种内给电子体中,以cis-1,2-环己二甲酸二异丁酯为内给电子体时,催化剂的聚合活性和PP等规度最高,性能与工业催化剂相当;当选用cis-1,2-环己二甲酸二异丁酯为内给电子体,CMMS为外给电子体,硅钛物质的量之比为10及铝钛物质的量之比为100时,催化剂的聚合活性和PP等规度达到最高.
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