DIELECTRIC MATERIALS HAVING HIGH CRYSTALLINITY, APPARATUS AND METHOD FOR PREPARING THE SAME

• Main Authors: PARK, KUM JIN, CHOI, CHANG HAK
• Format: Patent
• Language: English; Korean
• Published: 05.10.2012
• Subjects: ARTIFICIAL STONE; CALCULATING; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; COMPUTING; CONCRETE; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; PHYSICS; REFRACTORIES; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE; WORKING CEMENT, CLAY, OR STONE

PURPOSE: A high crystalline dielectric material and a manufacturing device and a method of manufacture thereof are provided to improve the crystallinity of particles. CONSTITUTION: A high crystalline dielectric material has a crystallization axial ratio of 1.003-1.010, a BET non-surface area of 4-80 m^2/g, and a particle size of 15-200 nanometers. The dielectric substance has a perovskite structure marked as ABO3. In the structure of ABO3, A is one or more selected from Mg, Ca, Sr, Pb, Ba and La. B is one or more selected from Ti, Zr and Hf. The manufacturing device of the high crystalline dielectric substance comprises a pair of material feeders(10,20), a mixing tank(30), an autoclave(40) and a cooling pump(50). A manufacturing method of the high crystalline dielectric substance comprises the following steps: dissolving starting raw material A and B in each reactor; manufacturing the nuclei of granules by reacting the starting raw material A and B in the blending tank; and growing the nuclei in a thermostat autoclave. [Reference numerals] (31) Ultrasonic device; (33) High pressure pump; (AA) Filter