Permanent-magnet material resistant to high temperature and with high magnetic performance
A permanent magnet material, high magnetic technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of poor adhesion between magnetic powder and special resin, unsatisfactory high temperature resistance, and improved magnetic properties of magnets, to make up for Low operating temperature, reasonable control of grain size, and improved magnetic properties
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Embodiment 1
[0021] (1) Magnetic powder surface coupling: Stir and mix 100 parts by weight of Nd2Fe14B magnetic powder and 0.2 parts by weight of graphene oxide powder to form a mixed magnetic powder; then mix 0.1 parts by weight of titanate coupling agent NDZ401 with 30 parts by weight of The xylene organic solvent is added in the magnetic powder of 100.2 parts by weight, and the above-mentioned solution is mixed uniformly by high-speed shear stirring at a speed of 2000 rpm for 0.5 h, and the magnetic powder and the coupling agent can be fully mixed by ultrasonic vibration for 0.5 h, and then The mixture is heated while stirring until the solvent is volatilized, and the modified mixed magnetic powder is dried and ground for use; (2) then the modified mixed magnetic powder is mixed with 0.1 parts by weight of ferrocene magnetic powder, dried , then add the mixed solution of 1 weight part of bisphenol A epoxy resin and acetone to the dried mixed magnetic powder, stir at a stirring speed of 2...
Embodiment 2
[0025] (1) Magnetic powder surface coupling: 100 parts by weight of Nd2Fe14B magnetic powder and 3 parts by weight of graphene oxide powder are stirred and mixed evenly to form a mixed magnetic powder, and 2 parts by weight of titanate coupling agent NDZ401 and 35 parts by weight of Alcohol was added to 103 parts by weight of the mixed magnetic powder, and the above solution was mixed uniformly by high-speed shear stirring at a speed of 500 rpm for 1 hour, and the mixed magnetic powder and the coupling agent could be fully mixed by ultrasonic vibration for 1 hour, and then the mixture was mixed Heating while stirring until the solvent volatilization is complete, drying and grinding the modified mixed magnetic powder for use; (2) then mixing the modified mixed magnetic powder with 0.3 parts by weight of ferrocene magnetic powder, drying, and then mixing The mixture of 6.5 parts by weight of phenol A epoxy resin and organic solvent acetone is added to the mixed magnetic powder af...
Embodiment 3
[0028] (1) Magnetic powder surface coupling: 100 parts by weight of Nd2Fe14B magnetic powder and 2 parts by weight of graphene oxide powder are stirred and mixed evenly to form a mixed magnetic powder, and 5 parts by weight of titanate coupling agent NDZ401 and 30 parts by weight of Xylene is added to the mixed magnetic powder of 102 parts by weight, and the above-mentioned solution is mixed uniformly by high-speed shear stirring at a speed of 800 rpm for 1.5h, and the mixed magnetic powder and the coupling agent can be fully mixed by ultrasonic oscillation for 1.5h, and then The mixture is heated while stirring until the solvent is volatilized, and the modified mixed magnetic powder is dried and ground for use; (2) then the modified mixed magnetic powder is mixed with 0.2 parts by weight of ferrocene magnetic powder, dried, Add the mixture of bisphenol A epoxy resin and organic solvent acetone to the surface-coupled mixed magnetic powder, stir for 1.5 hours at a stirring speed...
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