DQC-700型催化剂催化丙烯聚合  

Propylene polymerization with DQC-700 catalyst

作　　者：李秀岭 刘月祥[2] 彭人琪[2] 

机构地区：[1]中沙(天津)石化有限公司,天津市300271 [2]中国石油化工股份有限公司北京化工研究院,北京市100013

出　　处：《合成树脂及塑料》2016年第2期28-30,58,共4页China Synthetic Resin and Plastics

摘　　要：采用仪器分析和化学分析法表征了DQC-700型催化剂的组成、结构及其颗粒形态。以环己基甲基二甲氧基硅烷为外给电子体,用DQC-700型催化剂催化丙烯本体聚合,评价了预聚合温度对预聚合倍数、预聚物等规指数和预聚物粉料粒径分布的影响,研究了催化剂的聚合性能和聚丙烯粉料中的细粉含量。结果表明:DQC-700型催化剂具有较窄的粒径分布(粒径分布跨度<1.0)、较大的比表面积(>300 m2/g)、较高的聚合活性[>45 kg/(g·h)]和立构定向性(聚丙烯等规指数>98%)。The components, particle morphology and structure of DQC-700 catalyst are characterized by means of instrumental and chemical methods. Propylene bulk polymerization is carried out by DQC-700 with cyclohexyl methyl dimethoxy silane as external electron donor. The impact of pre-polymerization temperature on pre-polymerization ratio, isotactic index and particle size distribution（PSD） of the prepolymer are evaluated, and the performance of polymerization of the catalyst and fine power content in propylene powder are observed as well. The results show that DQC-700 catalyst has narrow PSD（less than 1.0）, large specific surface area（more than 300 m^2/g）, high activity [higher than 45 kg/（g·h）]and stereo-regularity（isotactic index of propylene is more than 98%）.

关 键 词：丙烯 球形催化剂 预聚合 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]