ALUMINUM BOARD CONTAINING HOLLOW SPHERICAL ALUMINO-SILICA PARTICLES TO SUBSTANTIALLY LOWER SPECIFIC GRAVITY WITHOUT STRENGTH DROP

摘要

PURPOSE: To provide an aluminum board having low specific gravity while maintaining inherent strength of aluminum as it is, a light weight aluminum board manufactured at low manufacturing cost by a simple manufacturing process, and a light weight aluminum board that does not generate toxic gas when a fire breaks out. CONSTITUTION: The light weight aluminum board contains 10 to 50 wt.% of hollow spherical alumino-silica particles having specific gravity of 0.4 to 0.8 and particle diameter of 30 to 150 μm, wherein the hollow spherical alumino-silica particles comprise 45 wt.% or more of SiO2, and 20 wt.% or more of Al2O3.