Novel Method to Modify the Surface of Templates in the Fabrication of Porous Ceramics

Polyurethane templates are treated using silica sol to improve the coherence between the slurry and the surface of templates and the surface coarseness. Effects of treatment on the surface morphology,mechanical properties and the slurry loading on templates are studied. After the surface treatment,the slurry coating is uniform,the recoverability of the templates is improved,and the slurry loading on the templates increases greatly. It′s believed that the flaws will decrease and the mechanical properties will increase after the treatment of templates.