文献类型：期刊文章

作　　者：霍超[1] 孟濬[2] 任晓红[2] 阳永荣[2] 戎顺熙[2]

机构地区：[1]College [2]Department

出　　处：《Chinese Journal of Chemical Engineering》

基　　金：Supported by the National Natural Science Foundation of China (No. 29706010, No. 20203016).

年　　份：2003

卷　　号：11

期　　号：1

起止页码：33-37

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2011_2012、EBSCO、EI、IC、JST、PL、SCI(收录号：WOS:000181603300006)、SCI-EXPANDED(收录号：WOS:000181603300006)、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：The surface morphology of Ti-Mg supported catalyst and the polyethyleneparticles are studied using scanning electron microscope(SEM) technology. The results show thateithen the catalyst's surface or polymer particle's surface is irregular and has fractalcharacteristics, which can be described by fractal parameter. The more interesting discovery is thatthe surface fractal dimension values of the polymer particles vary periodically with thepolymerization time. We call this phenomenon fractal evolution, which can be divided into the'revolution' stage and the 'evolution' stage. And then we present polymerization fractal growingmodel (PFGM), and successfully describe and/or predict the whole evolving process of thepolyethylene particle morphology under the different slurry polymerization (includingpre-polymerization) conditions without H_2.

关 键 词：polyethylene catalyst  fractal evolution theory  surface morphology  polymerization fractal growing model  

分 类 号：TQ316.3]