National Changhua University of Education Institutional Repository : Item 987654321/16834
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 6507/11669
造访人次 : 29709064      在线人数 : 340
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.ncue.edu.tw/ir/handle/987654321/16834

题名: Silica-Supported Metallocenes:Effect of the Preparation Procedure on the Morphology of Polyethylene Particles
作者: Lin, Chiu-Hsun;Sheu, Chyi-Yang
贡献者: 化學系
日期: 2000-10
上传时间: 2013-06-05T09:36:25Z
出版者: John Wiley & Sons, Inc.
摘要: Polyethylene (PE) particles are produced by a catalyst prepared by contacting a (C4H9Cp)2ZrCl2/MAO pre-mixing solution with SiO2 support. These particles have a large granular size and very few fine particles compared with those derived from a catalyst prepared by adsorption of (C4H9Cp)2ZrCl2 onto methylaluminoxane modified SiO2. The amount of Al in the pre-mixing catalyst has an important effect on its activity and the PE particle size distribution. The optimal concentration is about 30 wt.-%. The PE particles produced using a pre-mixing catalyst consist of globules with randomly oriented fiber structure on the surface, whereas those produced using adsorption catalysts have worm-like fibrils protruding from the PE globule surface.
關聯: Macromolecular Rapid Communications, 21(15): 1058-1062
显示于类别:[化學系] 期刊論文

文件中的档案:

档案 大小格式浏览次数
index.html0KbHTML478检视/开启


在NCUEIR中所有的数据项都受到原著作权保护.

 


DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈