A model for ceramic membrane formation by dip-coating

被引：59

作者：

Gu, YF ^{[1
]}

Meng, GY ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1999年 / 19卷 / 11期

关键词：

dip-coating; slip casting model; Al2O3; membranes;

D O I：

10.1016/S0955-2219(99)00013-8

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The wet ceramic membrane formation on a porous substrate in the dip-coating process plays a key role for high quality separation layers of the asymmetric membranes. A model to quantitatively describe the membrane growth under a driving force of the capillary filtration is derived on the basis of the slip-casting model. As an example, alpha-Al2O3 microfiltration membranes were prepared by dip-coating. The influence of the dipping time on the membrane thickness was examined. The data for alpha-Al2O3 microfiltration membranes fit the predictions made by the model well. In addition, the results of gamma-Al2O3 membranes demonstrate that this model is also valid for ultra-filtration membrane formation by dipping sols. (C) 1999 Elsevier Science Limited. All rights reserved.

引用

页码：1961 / 1966

页数：6

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