氧化铝微滤膜的制备及表征

The Preparation and Characterization of Alumina Microfiltration Membrane

该文介绍采用固态粒子烧结法制备管状氧化铝微滤膜的方法 ,研究分散剂用量和悬浮液的稳定性、涂膜时间和膜厚的关系以及烧结温度对孔径分布的影响 ,利用扫描电镜研究膜的微观形貌 ,采用泡压法测定膜的孔径分布。实验结果表明 ,所得的膜具有孔径分布窄的特点 ,平均孔径为 0 .76 μm ,孔隙率为 35 .6 % ,纯水通量为 2 .0 2m3 / (m2 ·h)。

The preparation method of tubular alumina microfiltration membrane by solid state particles sintering technique was introduced in this paper. The relationships of dispersant content and stability of suspension, dipping time and membrane thickness, the influence of sinter temperature on pore size distribution were investigated in detail. The microstructure and pore size distribution were obtained by scan electron microscope(SEM) and bubble pressure method, respectively. The results show that the pore size distribution of membrane is of narrow with mean pore diameter 0 76 μm, porosity 35 6 % and the flux of pure water 2.02 m 3/(m 2·h).