colloidal silcia high purity nano silica sol for investment casting polishing liquid

Silica sol is a colloidal solution of amorphous silica dispersed in water. Because of the surface reactive hydroxyl group of silica, it can be bonded with carboxyl, amino and ester groups. It has a wide range of application value, and can be used in coating, ink, casting, paper making, battery, electronic polishing and other industries.