烧结法制备氧化锆-氧化铝复合微滤膜

Preparation of zirconia-alumina composite microfiltration membrane by sintering

采用悬浮粒子烧结法，在两种不同结构的α－Ａｌ２Ｏ３支撑体上制备出０１７μｍ左右的管式氧化锆复合微滤膜研究制膜条件对ＺｒＯ２／α－Ａｌ２Ｏ３复合微滤膜的成膜质量的影响，结果发现，要得到无缺陷膜，干燥和烧结的温度及时间的适当控制尤为重要，温度为ｂＴｓ烧结２ｈ成膜较好采用气体泡压法测定膜的孔径分布。

The composite tubular membranes are prepared by applying suspensions of zirconia particles to form separation layers on two different porous α-alumina supports and heating the coated supports to partly sinter the particles of the layers.The conditions of making the zirconia composite membranes are investigated systematically.It is very important for the crack-free composite membranes to control temperature and time of drying and sinterin.The pore size distributions of the asymmetric zirconia membranes are determined by gas bubble pressure method.The water permeabilities of these membranes are also measured.