Utilizing Rice Husk for Ceramic and Glass Foams as Matrix and Foaming Agent

Abstract

Rice husk was converted to SiC or SiO₂ and used for making porous ceramics or foamed glass. The rice husk derived SiC was aggregated, but by adding a peptizer it was possible to disperse to the same extent as commercially available SiC. Such dispersed SiC derived from rice husk was able to be used as a foaming agent to fabricate ceramic foams. We also succeeded in making foamed glass using rice husk derived SiC as a foaming agent and in fabricating foamed glass using rice husk derived silica matrix added with glass modifiers.