HIGHLY CRYSTALLINE SILICON DIOXIDE COATED BARIUM TITANATE POWDER

• Main Authors: PARK, KUM JIN, CHOI, CHANG HAK, JEON, HYUNG JOON
• Format: Patent
• Language: English; Korean
• Published: 14.01.2015
• Subjects: ADHESIVES; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; DYES; INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS; INORGANIC CHEMISTRY; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; PREPARATION OF CARBON BLACK; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES

The present invention relates to a method for manufacturing highly crystalline silicon dioxide (SiO_2)-coated barium titanate powder and to highly crystalline silicon dioxide-coated barium titanate powder. The method for manufacturing highly crystalline silicon dioxide-coated barium titanate powder according to the present invention comprises the steps of: preparing the raw material of barium hydroxide wherein barium (Ba) is ionized by adding materials including silicon (Si) and heating; preparing the raw material of titanium (Ti) dispersed in acid or base; obtaining barium titanate seeds by mixing and reacting the raw materials of barium hydroxide and titanium; grain-growing the barium titanate seeds by mixing the barium titanate seeds with pure water and a grain growth inhibitor; and coating the surfaces of the grain-grown barium titanate seeds with silicon dioxide (SiO_2).