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Magnetic material for motor and preparation method thereof

A magnetic material and magnetic technology, applied in the field of magnetic materials for motors and their preparation, can solve problems such as poor thermal stability and difficulty in application, and achieve the effects of increasing stability and high temperature resistance, increasing mechanical properties and high temperature resistance

Inactive Publication Date: 2021-06-25
广州跃金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But usually the Curie temperature of sintered NdFeB is only about 320°C. The outstanding problem is that the thermal stability is poor. The maximum working temperature of high-performance products is only 200°C, which is difficult to apply in the environment with high working temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A magnetic material for a motor, consisting of the following components in parts by weight:

[0031] 70 parts of NdFeB magnetic powder, 18 parts of magnetic iron oxide powder, 16 parts of silicon dioxide powder, 9 parts of calcium lactate powder, 10 parts of phenoxy modified polyetheretherketone and 2 parts of hydroxypropyl distarch phosphate.

[0032] The particle diameters of the magnetic iron oxide powder, silicon dioxide powder and calcium lactate powder are all 50-100 μm.

[0033] The preparation method of the modified polyether ether ketone is:

[0034] S1. Weigh polyether ether ketone and add it to N,N-dimethylformamide, pass in an inert gas as a protective gas, stir until uniform, add methanesulfonic acid, stir until completely dissolved, and obtain a mixed solution A;

[0035] Wherein, the mass ratio of polyetheretherketone, methanesulfonic acid and N,N-dimethylformamide is 1:0.3:20;

[0036] S2. Add thiophenol and aluminum chloride to the mixed solution A in...

Embodiment 2

[0048] A magnetic material for a motor, consisting of the following components in parts by weight:

[0049]60 parts of NdFeB magnetic powder, 15 parts of magnetic iron oxide powder, 10 parts of silicon dioxide powder, 8 parts of calcium lactate powder, 6 parts of phenoxy modified polyetheretherketone and 1 part of hydroxypropyl distarch phosphate.

[0050] The particle diameters of the magnetic iron oxide powder, silicon dioxide powder and calcium lactate powder are all 50-100 μm.

[0051] The preparation method of the modified polyether ether ketone is:

[0052] S1. Weigh polyether ether ketone and add it to N,N-dimethylformamide, pass in an inert gas as a protective gas, stir until uniform, add methanesulfonic acid, stir until completely dissolved, and obtain a mixed solution A;

[0053] Wherein, the mass ratio of polyetheretherketone, methanesulfonic acid and N,N-dimethylformamide is 1:0.2:15;

[0054] S2. Add thiophenol and aluminum chloride to the mixed solution A in tu...

Embodiment 3

[0066] A magnetic material for a motor, consisting of the following components in parts by weight:

[0067] 80 parts of NdFeB magnetic powder, 30 parts of magnetic iron oxide powder, 20 parts of silicon dioxide powder, 15 parts of calcium lactate powder, 12 parts of phenoxy modified polyetheretherketone and 3 parts of hydroxypropyl distarch phosphate.

[0068] The particle diameters of the magnetic iron oxide powder, silicon dioxide powder and calcium lactate powder are all 50-100 μm.

[0069] The preparation method of the modified polyether ether ketone is:

[0070] S1. Weigh polyether ether ketone and add it to N,N-dimethylformamide, pass in an inert gas as a protective gas, stir until uniform, add methanesulfonic acid, stir until completely dissolved, and obtain a mixed solution A;

[0071] Wherein, the mass ratio of polyetheretherketone, methanesulfonic acid and N,N-dimethylformamide is 1:0.5:30;

[0072] S2. Add thiophenol and aluminum chloride to the mixed solution A i...

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Abstract

The invention provides a magnetic material for a motor. The magnetic material is prepared from the following components in parts by weight: 60 to 80 parts of neodymium iron boron magnetic powder, 15 to 30 parts of magnetic iron oxide powder, 10 to 20 parts of silicon dioxide powder, 8 to 15 parts of calcium lactate powder, 6 to 12 parts of phenoxy modified polyether-ether-ketone and 1 to 3 parts of hydroxy propyl distarch phosphate. According to the magnetic material for the motor and the preparation method of the magnetic material, the neodymium iron boron magnetic powder is specifically used as the basis, and the magnetic iron oxide powder, the silicon dioxide powder and the calcium lactate powder are added to serve as filler, so that certain mechanical property and high temperature resistance of the magnetic material are improved; and the hydroxypropyl distarch phosphate is added as a dispersing agent, and the phenoxy modified polyether-ether-ketone is added as a tackifier and a reinforcing agent, so that the stability and the high temperature resistance of the magnetic material are improved.

Description

technical field [0001] The invention relates to the field of magnetic materials for motors, in particular to a magnetic material for motors and a preparation method thereof. Background technique [0002] Permanent magnet material, also known as "hard magnetic material", is a material that can maintain a constant magnetic field once magnetized. Its basic function is to provide stable and lasting magnetic flux without consuming electric energy, which is one of the important means of saving energy. At the same time, the permanent magnetic material makes the structure of the apparatus and equipment simple, and the manufacturing cost and maintenance cost are reduced. Therefore, the application of permanent magnet materials is becoming wider and wider, and the application volume is increasing. Especially in the field of motors, the demand for permanent magnet materials is increasing year by year. [0003] Permanent magnet materials commonly used in motors include sintered magnet...

Claims

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Application Information

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IPC IPC(8): H01F7/02H01F1/03H01F41/00
CPCH01F1/03H01F7/02H01F41/00
Inventor 叶永波孙伟江赵栋
Owner 广州跃金科技有限公司
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