不同硅烷加入量对BCZ-208聚合性能的影响  

Dependence of BCZ-208 catalyst polymerization performance on silane donor amount

作　　者：郭晏君 周奇龙[1] 徐秀东[1] 张锐[1] Guo Yanjun;Zhou Qiong;Xu Xiudong;Zhang Rui(SINOPEC Beijing Research Institute of Chemical Industry,Beijing 100013)

机构地区：[1]中国石化股份有限公司北京化工研究院,北京100013

出　　处：《石化技术》2024年第3期26-28,71,共4页Petrochemical Industry Technology

摘　　要：使用环己基甲基二甲氧基硅烷(Donor C)为外给电子体,考察了Si/Ti从0到1.2 mol%范围内BCZ-208催化剂在丙烯聚合中的性能变化。结果表明,随着Si/Ti的升高,催化剂聚合活性和氢调性能逐渐降低,等规度逐渐升高,且影响程度随硅烷加入量的升高而降低。同时,硅烷添加量对粉料的堆积密度和细粉含量影响不明显。因此,BCZ-208催化剂能够适用于更宽的硅烷用量范围,具有较好的性能可调性。Using cyclohexylmethyldimethoxysilane(Donor C)as the external electron donor,the performance changes of BCZ-208 catalyst in propylene polymerization in the Si/Ti range from 0 to 1.2 mol%were investigated.The results show that with the increase of Si/Ti ratio,the polymerization activity and hydrogen modulation performance of the catalyst gradually decrease,the isotacticity increases.These three properties are less affected when the silane addition amount increases.Meanwhile,the added amount of silane has no obvious effect on the bulk density andfine content of the polymer.Therefore,the BCZ-208 catalyst can be applied to a wider range of silane dosage and has better performance adjustability.

关 键 词：BCZ催化剂 外给电子体 聚丙烯 硅烷 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]