UV (ultraviolet) solidified bonding magnet and preparation method thereof

A technology of bonding magnets and curing resins, applied to magnetic objects, magnetic materials, permanent magnets, etc., can solve problems such as physical health damage and environmental pollution of operators, and achieve the effects of cheap equipment, good treatment effect and little environmental pollution.

Active Publication Date: 2013-03-13
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic matter entering the atmosphere can form a more serious greenhouse effect than carbon dioxide, and can form oxides and photochemical smog under sunlight, causing environmental pollution and damage to the health of operating workers

Method used

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  • UV (ultraviolet) solidified bonding magnet and preparation method thereof
  • UV (ultraviolet) solidified bonding magnet and preparation method thereof
  • UV (ultraviolet) solidified bonding magnet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] A UV curable bonded magnet, its raw material formula includes: 97% domestic bonded NdFeB magnetic powder (brand ZRK-9.5M); 2.5% UV curable resin mixture; 0.4% KH550 silane coupling agent; 0.1% zinc stearate lubricant.

[0064] The above-mentioned UV curable resin mixture comprises by weight percentage: 60% bisphenol A type epoxy acrylate prepolymer; 30% PETA monomer that can be polymerized with the above-mentioned prepolymer component; 8% acetophenone Photoinitiator; 2% diethanolamine co-initiator.

[0065] Prepare as follows:

[0066] (1) Add the domestic bonded NdFeB magnetic powder into the ethanol solution of KH550 silane coupling agent, let it stand for a period of time until it evaporates to dryness, and bake it in an oven at 70°C for 1 hour;

[0067] (2) The above-mentioned magnetic powder and UV curable resin mixture are mixed in acetone solvent, then dried and granulated to make a mixed magnetic powder;

[0068] (3) The mixed rubber magnetic powder is matche...

Embodiment 2～ Embodiment 10

[0073] The method for preparing UV-cured bonded magnets in Examples 2 to 10 is the same as in Example 1, except that the UV-cured bonded magnet raw material components and the composition of the UV-cured resin mixture are different. The detailed components are shown in Table 1 and Table 2 shows.

[0074] The performance results of the bonded magnets, such as magnetic properties and crush strength, are shown in Table 3.

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PUM

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Abstract

The invention belongs to the technical field of permanent magnetic materials, and particularly relates to a UV (ultraviolet) solidified bonding magnet. The UV solidified bonding magnet comprises the following raw materials according to a mass ratio: 90-98.5 percent and one of bonding NdFeB magnetic powder, Sr ferrite magnetic powder or Ba ferrite magnetic powder; 1-8 percent of UV solidified resin mixture; 0.1-1 percent of coupling agent; and 0.05-0.4 percent of stearate lubricant. The invention further provides a preparation method of the UV solidified bonding magnet. According to the preparation method, the problems of lowering magnet property due to a high temperature, oxidization, heat demagnetization and the like in a traditional solidification method are solved, and the preparation method has the advantages of fast solidification speed, little pollution, energy-saving and the like.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet materials, and in particular relates to a UV-cured bonded magnet with high magnetic performance, high mechanical strength, fast curing speed, low cost and environmental protection and a preparation method thereof. Background technique [0002] Bonded magnets are polymer-based composite permanent magnet materials made by uniformly mixing magnetic powder with binders such as resin, plastic or low-melting point metals, and then molded, extruded or injected. It is one of the permanent magnet materials. important branch. At present, domestic bonded permanent magnets are generally produced by compression molding technology. The method of producing magnets by bonding process began in the late 1960s. Compared with the magnets produced by the original casting method and powder metallurgy method (also known as sintering method), it has the following characteristics: [0003] ① Strong designabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F7/02H01F1/057H01F1/08C08F290/06
Inventor 金志洪李玉平胡江平
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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