Ziegler-Natta催化丙烯聚合中氢气的作用  

Role of Hydrogen in Propylene Polymerization Catalyzed by Ziegler-Natta Catalysts

作　　者：雷华[1] 徐宏彬[2] 冯连芳[1] 杨爱武[2] 翁志学[1] 徐国斌[2] 

机构地区：[1]浙江大学高分子工程研究所,浙江杭州310027 [2]扬子石油化工股份有限公司研究院,江苏南京210048

出　　处：《石油化工》2003年第12期1087-1090,共4页Petrochemical Technology

摘　　要：在氢气链转移机制的基础上,综述了给电子体对氢气调节聚丙烯相对分子质量作用的影响,以及氢气对聚丙烯规整性的提高和对催化剂活性的强化等方面的作用,并介绍了氢气在聚合体系中与各组分的物理作用,为建立氢气影响的定量关系及对过程建立模型提供参考。In indurstrial process for propylene polymerization catalyzed by Ziegler-Natta catalysts,hydrogen is introduced into polymerization reactor as a controlling agent of relative molecular mass to meet the requirements of production for different brands of polypropylene.Based on the mechanism of chain transfer to hydrogen,effect of electron donor on the role of hydrogen as a controlling agent of relative molecular mass,the effect on stereoregularity of polypropylene,and effect of activation were reviewed.Also,the general accepted mechanism behind these effects was summarized.In the end,physical interaction between hydrogen and components in polymerization system was introduced,which was helpful to build up quantitative effects of hydrogen and model of polymerization process.

关 键 词：氢气 ZIEGLER-NATTA催化剂 丙烯 链转移 聚丙烯 

分 类 号：TQ314.242[化学工程—高聚物工业]