|
|
bingd600420(金币+30, 翻译EPI+1): 谢谢 2011-01-19 20:43:20
2.3 ZrO2 nanocrystalline coating modification of ceramic membrane preparation
Use the hydrolysis of sol-gel method [1] with alpha Al2O3 preparation of ceramic microfiltration membrane on ZrO2 nano coating modification modification. Using bubble method of modified ceramic microfiltration membrane pore size distribution, the average aperture for characterizing 0.32 muon m (of ceramic membrane size for Ф 30 mm x 1.2 mm, with 10 mu m alpha Al2O3 preparation support body, with 1.5 muon m alpha Al2O3 preparation about 20 mu m thick ZrO2 membrane, nano modified top coating ℃ calcination 2h by 800, ZrO2 nanocrystalline for tetragonal phase). .
MgCl2 concentration for 10-3mol/L, in different pH force with action distance under the changing relations between as figure2shows.
In pH6.05 to 9.07 between, mainly due to the electric double layer exclusion function and show long-range the repelling force. In less than 20nm after action distance, different pH value of the repelling force is obviously increased. When |
|
回复此楼