알루미나계 열 전도성 산화물 및 그 제조 방법

• Main Authors: YAMANE KENICHI, TOMINAGA SHINGO, YAMAMURA NAOTSUGU, ONIDUKA HIROYA, NISHIO AKIRA
• Format: Patent
• Language: Korean
• Published: 14.10.2019
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; COMPOUNDS THEREOF; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; INORGANIC CHEMISTRY; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; NON-METALLIC ELEMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES; USE OF MATERIALS THEREFOR; WOODSTAINS

열 전도성뿐만 아니라, 내약품성, 내수성, 및 전기 절연성이 우수함과 동시에, 수지에의 반죽성(kneadability)(혼화성(miscibility))이 양호하고, 성형성이 우수한 수지 조성물 등의 재료나 물품을 제조하는 것이 가능한 알루미나계 열 전도성 산화물을 제공한다. 알루미늄 원료를 함유하는 원료 혼합물을 소성해서 얻어지는 알루미나계 열 전도성 산화물이다. 알루미늄 원료가, 보에마이트(boehmite), 수산화알루미늄, 및 알루미나로 이루어지는 군에서 선택되는 적어도 일종이며, 원료 혼합물이, 붕산 화합물과, 텅스텐 화합물 등의 산화물 원료를 더 함유하고, 원료 혼합물 중, 알루미늄 원료 100질량부에 대한, 붕산 화합물의 함유량이 0.1∼5질량부이며, 산화물 원료의 함유량이 0.1∼20질량부이다. Provided is an alumina-based thermally conductive oxide which has not only an excellent thermal conductivity but also excellent chemical resistance, water-fastness, and electrical insulation property, while exhibiting a satisfactory kneadability (miscibility) into a resin and being capable of producing materials and articles, such as a resin composition, having an excellent shapability. Specifically, the present invention is an alumina-based thermally conductive oxide which is obtained by firing a starting material mixture that contains an aluminum starting material. The aluminum starting material is at least one selected from the group consisting of boehmite, aluminum hydroxide, and alumina; the starting material mixture further contains a boric acid compound and an oxide starting material such as a tungsten compound; and the content of the boric acid compound in the starting material mixture is 0.1 to 5 parts by mass, and the content of the oxide starting material in the starting material mixture is 0.1 to 20 parts by mass each based on 100 parts by mass of the aluminum starting material.