具有梯度孔结构的氧化铝超滤膜的制备及表征  

Preparation and Characterization of Alumina Ultrafiltration Membranes with Gradient Pore Structures

作　　者：徐磊[1] 任佳乐[1] 李自金[1] 张洪波[1] 旷峰华[1] 任瑞康[1] 

机构地区：[1]中国建筑材料科学研究总院,北京100024

出　　处：《中国陶瓷》2016年第1期40-44,共5页China Ceramics

摘　　要：采用浸渍法在多孔氧化铝基板表面依次制备微孔过渡膜和超滤膜,形成具有梯度孔结构的陶瓷超滤膜。详细考察了浸浆次数和烧结温度对膜微观结构和孔径大小的影响。结果表明,通过二次涂膜,在多孔氧化铝基板表面获得了膜厚约30μm,孔径约200 nm的微孔过渡膜,其最佳烧结温度为1200℃;通过一次涂膜,在过渡膜表面获得了孔径小于3.6nm的超滤膜,其最佳烧结温度为1100℃。Dipping method was used to successively prepare micro-porous transition membrane and ultrafiltration membrane on the surface of porous alumina substrates, forming the ceramic ultrafiltration membrane with gradient pore structure. The effect of dipping times and sintering temperature on microstructure and pore size of membranes was investigated in detail. The results show that micro-porous transition membrane with 30 μm of thickness and 200 nm of pore size was prepared by dipping alumina slurry for 2 times and its optimal sintering temperature is 1200℃; Ultrafiltration membrane with pore size less than 3.6 nm was prepared on the surface of micro-porous transition membrane by dipping alumina sol for 1 time and its optimal sintering temperature is 1100 ℃。

关 键 词：微孔过渡膜 超滤膜 氧化铝 梯度孔结构 

分 类 号：TQ174.758.11[化学工程—陶瓷工业]