METHOD FOR PREPARING MONODISPERSE GLOBULAR BARIUM TITANATE MINUTE PARTICLES

摘要

PURPOSE: Provided is a method for preparing monodisperse globular barium titanate minute particles whose average diameter is less than 1μm so that the particles may be suitable to uses without cohesion. Whereby, they can be used as powdered raw materials for electric functional materials, cosmetics, paints, artificial jewels or fillers. CONSTITUTION: A method for preparing monodisperse globular barium titanate minute particles comprises the steps of: (i) a first step to prepare octanol solution by melting barium titanate complex alkoxide 0.04-0.45 mol/L in octanol 45-65 volume%; (ii) a second step to mix acetonitrile 25-45 volume% with the octanol solution after heating to 21-60deg.C for the mixed solution to reach 90 volume%; (iii) a third step to add a solution prepared by melting water 0.04-0.45mol/L in ethanol 10 volume% to prepare a reacted solution; and (iv) a fourth step to grow barium titanate minutes particle nuclei generated in the early step of forming the reacted solution while stirring at normal temperature for 1 hour.