METHOD FOR MANUFACTURING HOLLOW MICRO GLASS SPHERES

摘要

PURPOSE: A manufacturing method of hollow glass microspheres is provided to utilize for micro container for gas preservation and insulating material by using a flame spraying process and synthesizing glass compositions with proper ratios. CONSTITUTION: A manufacturing method of hollow glass microspheres comprises next steps: mixing Na2SO4 and NH4H2PO4 for forming hollowness, CaCO3 for clarifying and homogenization of the glass, boric acid (H3BO3) for thickness adjustment, and SiO2 and Na2CO3 which are main components of soda lime glass; sintering the mixture after stirring the mixture; obtaining glass powder by size after breaking the frozen glass; and manufacturing glass hollow body by using a flame method. In the first step, 50-77.5wt% of SiO2, 0.1-25wt% of H3BO3, 10-45wt% of Na2CO3, 1-10wt% of CaCO3, 5-20wt% of Na2SO4, and 0.5-5wt% of NH4H2PO4 are mixed.