METHOD FOR PREPARING CAALO BASED NANO-SIZED POWDERS FOR PROTECTIVE LAYER OF PDP APPLICATION

摘要

PURPOSE: A method for manufacturing CaAlO nanopowder for PDP protective film is provided to reduce generation amount of HCl, NO_2, and SO_2 through additional thermal retreatment. CONSTITUTION: A method for manufacturing a CaAlO nanopowder for PDP protective film comprises: a step of immersing metal salt aqueoud solution of calcium and aluminum in polymers; a step of inputting the immersed material in a furnace at room temperature; a step of calcining at 500-1000°C and cooling; and a step of sintering at 1000-1400°C. The CaAlO nanopowder contains 10-15 mol% of calcium and 10-18 mol% of aluminum. The metal salt is selected from salt compound, nitrogen compound, sulfur compound, and phosphate compound.