摘要
综述了烯烃聚合过程中各种颗粒模型的研究进展,并着重讨论了聚合物颗粒形态和聚合过程之间的相互关系。近期的烯烃聚合研究发现,负载型催化剂性质、聚合条件对聚合过程中负载型催化剂是否分裂及聚合物颗粒形态演变有着重要的影响。最新的烯烃聚合颗粒模型(如两相模型、张力模型和颗粒形态模型等)引入了能量或张力的概念,认为聚合速率、传质阻力等影响能量或张力的大小,进而决定负载型催化剂是否分裂及最终的聚合物颗粒形态。
Latest progresses in particle models of olefin polymerization were reviewed. Relationship of polymer particle morphology with polymerization process was emphatically discussed. Recent researches revealed that properties of supported catalyst and polymerization conditions have important effects on fragmentation of supported catalyst and evolution of polymer particle morphology. The latest particle models, namely two-phase model, tension model and morphogenesis model, introduced concepts of＂ energy＂ and＂ tension＂, which related to polymerization rate and mass transfer resistance, and could determine fragmentation of catalyst and final morphology of polymer particles.
出处
《石油化工》
EI
CAS
CSCD
北大核心
2006年第10期1003-1007,共5页
Petrochemical Technology
基金
国家自然科学基金资助项目(20576115)
关键词
负载型催化剂
烯烃聚合
颗粒模型
颗粒形态
supported catalyst
olefin polymerization
particle model
particle morphology
