Method For Manufacturing Magnetic Nanoparticles

• Main Authors: HWANG JIN AH, CHUN MYOUNG PYO
• Format: Patent
• Language: English; Korean
• Published: 01.07.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

The present invention relates to a method for manufacturing magnetic nanopowder, and more specifically, to a method for manufacturing magnetic nanopowder with high permeability and high magnetic saturation values, used for a power inductor of an electronic device, a choke coil, a transformer, a motor of an electric vehicle and the like. To this end, the present invention is characterized by comprising: a material mixing step of inserting a metal supply source, a surfactant, and a reductant into benzyl ether or phenyl ether, which are solvents, and then mixing the same; a magnetic nanoparticle synthesis step of synthesizing a magnetic nanoparticle after allowing the solution in which the materials are mixed to go through multi-staged reaction temperature processes; a cleaning and centrifuging step of cooling the synthesized magnetic nanoparticle to room temperature and then transferring and containing the same in ethanol, hexane, or a mixed solution of the two elements so as to be cleaned and centrifuged; and a drying step of drying the magnetic nanoparticle which is completely cleaned and centrifuged. 본 발명은 자성 나노분말 제조방법에 관한 것으로, 더욱 상세하게는 전자 기기의 파워인덕터, 초크 코일, 변압기, 전기자동차 모터 등에 사용되는 고투자율 및 고포화자화 값을 갖는 자성 나노분말 제조방법에 관한 것이다. 이러한 본 발명은, 금속 공급원, 계면활성제 및 환원제를 용매인 벤질이써 또는 페닐이써에 넣고 혼합하는 원료 혼합 단계와; 상기 원료혼합 용액을 다단계의 반응온도 과정을 거쳐서 자성나노입자를 합성하는 자성 나노입자 합성 단계와; 상기 합성된 자성 나노입자를 상온으로 냉각하여 에탄올, 헥산 또는 이들의 혼합용액에 옮겨 담아 세척한 후, 원심분리하는 세척 및 원심분리 단계 및; 상기 세척 및 원심분리가 완료된 자성 나노입자를 건조하는 건조 단계를 포함하는 것을 특징으로 한다.