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    INJECTION MOLDED MAGNETIC MATERIAL AND PREPARATION METHOD THEREFOR
    3.
    发明公开
    INJECTION MOLDED MAGNETIC MATERIAL AND PREPARATION METHOD THEREFOR 审中-公开

    公开(公告)号：EP4324881A1

    公开(公告)日：2024-02-21

    申请号：EP22809307.6

    申请日：2022-06-30

    申请人： Hengdian Group DMEGC Magnetics Co., Ltd.

    发明人： HU, Jiangping ,  LI, Yuping ,  JIN, Zhihong

    IPC分类号： C08L77/00 ,  H01F1/00

    摘要： The present disclosure provides an injection molding magnetic material and a preparation method thereof. The injection molding magnetic material includes: 80 to 85 parts of a magnetic powder; 10 to 15 parts of a polymer binder; 0.5 to 1 part of a first coupling agent; 0.5 to 1 part of a second coupling agent; 2 to 5 parts of wollastonite; and 0.1 to 1 part of an auxiliary agent, in terms of part by weight. The injection molding magnetic material of the application can effectively improve the interface bonding effect between components by filling wollastonite on the surface of the injection molding magnetic material. At the same time, the use of an auxiliary agent and wollastonite can ensure the formability and wear resistance of the injection molding magnetic material. The first coupling agent can improve the compatibility between the magnetic powder and the binder, and the second coupling agent can improve the adhesion of the wollastonite, and improve the bonding force between the wollastonite and the magnetic powder, thereby improving the wear resistance of the injection molding magnetic material. In the above proportioning range, each component can interact synergistically to improve the interface bonding effect therebetween, so as to further improve the wear resistance of the injection molding magnetic material.

    MAGNETIC NANOPARTICLE HEATING METHOD USING RESONANCE
    10.
    发明公开
    MAGNETIC NANOPARTICLE HEATING METHOD USING RESONANCE 审中-公开

    公开(公告)号：EP4104898A1

    公开(公告)日：2022-12-21

    申请号：EP20918711.1

    申请日：2020-08-14

    申请人： Seoul National University R & DB Foundation

    发明人： KIM, Sang Koog ,  LEE, Jae Hyeok

    IPC分类号： A61N2/02 ,  A61N2/00 ,  A61K41/00 ,  H01F1/00

    摘要： Provided is a magnetic nanoparticle heating method using resonance, the method including (a) providing magnetic nanoparticles, (b) applying a direct current (DC) magnetic field to the magnetic nanoparticles, and (c) applying an alternating current (AC) magnetic field to the magnetic nanoparticles 100, wherein a temperature change rate dT/dt of the magnetic nanoparticles is increased to at least 10 K/s or more by adjusting at least one of a strength of the DC magnetic field, a frequency of the AC magnetic field, a strength of the AC magnetic field, and a pulse width of the AC magnetic field.