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Injecting ferrite permanent magnet material formula

A ferrite permanent magnet and ferrite magnet technology, applied in the direction of magnetic materials, inorganic materials, magnetic objects, etc., can solve the problems of low product stability, unsatisfactory magnetic performance, short service life, etc. The processing and production process is simple, the water absorption is small, and the service life is long.

Active Publication Date: 2005-07-27
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention also solves the technical problems of low product stability, short service life and unsatisfactory magnetic performance in the prior art, and provides a product with stable performance, high magnetic performance and long service life. Formulation of injection molding ferrite permanent magnet material

Method used

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  • Injecting ferrite permanent magnet material formula
  • Injecting ferrite permanent magnet material formula
  • Injecting ferrite permanent magnet material formula

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: After the ferrite is surface treated with a coupling agent, the content of the binder nylon 12 resin is weighed and mixed evenly in a mixer, and then mixed with a twin-screw mixer. After granulation, the nylon 12 high-performance injection molding permanent magnet ferrite in the designed shape is obtained by injection molding. Whether to carry out magnetic field orientation can be determined according to the properties of the magnetic powder used during molding.

[0025] Anisotropic strontium ferrite powder, silane coupling agent, binder nylon 12, organic external lubricant calcium stearate, inorganic internal lubricant aluminum oxide. Mix it well with a high-speed mixer.

[0026] Then, using a twin-screw kneader at 232° C., the formulation mixtures of the compositions shown in Table 1 were fully kneaded to obtain nylon 12 high-performance injection molded permanent magnet ferrite. Next, pelletizing is performed to obtain pellets with an average particle di...

Embodiment 2

[0033] Example 2: After the ferrite is surface treated with a coupling agent, the content of the binder nylon 12 resin is weighed and mixed evenly in a mixer, and then mixed with a twin-screw mixer. After granulation, the nylon 12 high-performance injection molding permanent magnet ferrite in the designed shape is obtained by injection molding. Whether to carry out magnetic field orientation can be determined according to the properties of the magnetic powder used during molding.

[0034] Mix anisotropic strontium ferrite powder, titanate coupling agent, binder nylon 12, organic external lubricant 12-hydroxystearic acid magnesium salt, and inorganic internal lubricant molybdenum disulfide with a high-speed mixer well mixed. Then, using a twin-screw kneader at 230° C., the formulation mixtures of the compositions shown in Table 1 were fully kneaded to obtain nylon 12 high-performance injection molded permanent magnet ferrite. Next, pelletizing is performed to obtain pellets w...

Embodiment 3

[0041] Embodiment 3: After the ferrite is surface treated with a coupling agent, the content of the binder nylon 12 resin is weighed and mixed evenly in a mixer, and then mixed with a twin-screw mixer. After granulation, the nylon 12 high-performance injection molding permanent magnet ferrite in the designed shape is obtained by injection molding. Whether to carry out magnetic field orientation can be determined according to the properties of the magnetic powder used during molding.

[0042] Mix anisotropic strontium ferrite powder, silane coupling agent, binder nylon 12, antioxidant, organic lubricant amide compound, and inorganic lubricant molybdenum disulfide with a high-speed mixer. Then, using a twin-screw kneader at 228° C., the formulation mixtures of the compositions shown in Table 1 were fully kneaded to obtain nylon 12 high-performance injection molded permanent magnet ferrite. Next, pelletizing is performed to obtain pellets with an average particle diameter of 2 t...

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Abstract

The invention composed of following component: ferrite magnetic powder, 80.0wt%-95.0wt%; nylon 12, 4.0wt%-20.0wt%; additive, 0.01wt%-3.0wt%; Its feature is:The additive consists of organic outside lubricant and inorganic inner lubricant, which can increase the fluidity of ingredients in tube, reduce decompose and oxidation of nylon 12 and palletizing temperature.

Description

technical field [0001] The invention relates to magnetic materials, in particular to an injection-molded ferrite permanent magnet material formulation using inorganic internal and organic external lubricants. Background technique [0002] With the development of high technology, people have higher and higher requirements for electronic information products. Electronic information machine products are developing in the direction of "light, thin, short and small". This puts forward higher requirements for permanent magnet materials in the electronic information industry. Compared with sintered permanent magnets, bonded permanent magnets, especially high-performance bonded permanent magnets, can form products of various complex shapes at one time due to their excellent mechanical properties, and can obtain products with high dimensional accuracy without post-processing. The advantages of being able to prepare products with complex shapes and continuous large-scale automatic p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/10H01F1/113
Inventor 何时金陆柏松陈军颜冲陆茂春
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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