HU Xuebing, ZHOU Jian'er, WANG Yongqing, ZHANG Xiaozhen

(University Key Laboratory of Inorganic Membrane in Jiangxi Province, Jingdezhen Ceramic Institute, Jingdezhen 333001)

Abstract:Alumina substrates were prepared by dry pressing using alumina as main material, and adding Suzhou clay and polyvinyl alcohol (PVA). The influences of the pressure, the amount of PVA and the thickness on the permeate flux of the substrates were studied. And the microstructure of the substrate was tested by SEM. The results show that alumina substrates have good microstructure and the stable permeate flux is 6.42 m³·m^-2·h^-1 when the pressure is 16 MPa,the amount of PVA is 0.4 wt% and the thickness is 3 mm.

Keywords:dry pressing, alumina substrate, permeate flux