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
郭晏君 1周奇龙 1徐秀东 1张锐1
作者信息
- 1. 中国石化股份有限公司北京化工研究院 北京 100013
- 折叠
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.
Abstract
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 and fine 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Key words
BCZ-208 catalyst/External donor/Polypropylene/Silane引用本文复制引用
出版年
2024
NETL
NSTL
万方数据