中国化学工程学报(英文版)
中國化學工程學報(英文版)
중국화학공정학보(영문판)
CHINESE JOURNAL OF CHEMICAL ENGINEERING
2003年
1期
33-37
,共5页
霍超%孟灋%任晓红%阳永荣%戎顺熙
霍超%孟灋%任曉紅%暘永榮%戎順熙
곽초%맹법%임효홍%양영영%융순희
polyethylene catalyst%fractal evolution theory%surface morphology%polymerization fractal growing model
The surface morphology of Ti-Mg supported catalyst and the polyethylene particles are studied usingscanning electron microscope(SEM) technology. The results show that either the catalyst's surface or polymerparticle's surface is irregular and has fractal characteristics, which can be described by fractal parameter. The moreinteresting discovery is that the 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" stageand the "evolution" stage. And then we present polymerization fractal growing model (PFGM), and successfullydescribe and/or predict the whole evolving process of the polyethylene particle morphology. under the different slurrypolymerization (including pre-polymerization) conditions without H2.
