Effect of surface free energy of ceramic glaze on oil droplet shape and its behavior in water
(Institute of Power Source and Ecomaterials Science,Hebei University of Technology, Tianjin 300130, China)
Abstract: A super-hydrophilic functional ceramic was prepared by adjusting the chemical components of ceramic glaze. Effect of surface free energy of ceramic glaze on oil droplet shape and its behavior in water were studied. The results show that water can spread on ceramic surface with high surface free energy, and oil droplet can aggregate rapidly and separate from the ceramic surface in water. For the ceramic with lower surface free energy, the polar shares are dependant on its easy-cleaning property. The higher the polar shares, the better the easy-cleaning property, and the easier the droplet separates from the ceramic surface in water.
Key words: functional ceramic; physicochemical property; easy-cleaning property; surface free energy; polar shares; disperse shares; contact angles