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A kind of anti-corrosion neodymium iron boron magnet and preparation method thereof

A corrosion-resistant, NdFeB technology, applied in the field of magnets, can solve problems such as poor corrosion resistance, and achieve the effects of stable product quality, high production efficiency and long service life

Active Publication Date: 2022-05-17
DONGGUAN CITY JIADA MAGNETOELECTRICITY PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of science and technology and the progress of society, people have higher and higher requirements for the performance of NdFeB magnets. However, the existing NdFeB magnets have poor corrosion resistance and cannot meet the needs in some occasions and fields. its use

Method used

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  • A kind of anti-corrosion neodymium iron boron magnet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this embodiment, a corrosion-resistant NdFeB magnet includes a NdFeB magnet substrate and a corrosion-resistant protective coating coated on the outer surface of the magnet substrate; the corrosion-resistant protective coating is made of a corrosion-resistant protective coating, The corrosion-resistant protective coating includes A component and B component, and the A component includes the following raw materials in parts by weight: 95 parts of bisphenol A epoxy resin, 16 parts of phenolic resin, 13 parts of acrylic resin, polytetrafluoroethylene 7 parts of ethylene, 16 parts of inorganic filler, 17 parts of functional additives, 8 parts of hydroxyethyl cellulose, 6 parts of styrene-acrylic emulsion, 16 parts of zinc powder, 2 parts of silane coupling agent, 50 parts of solvent; the B component The following raw materials are included in parts by weight: 3 parts of curing agent and 7 parts of diluent. The bisphenol A type epoxy resin is bisphenol A type epoxy resin ...

Embodiment 2

[0042] In this embodiment, a corrosion-resistant NdFeB magnet includes a NdFeB magnet substrate and a corrosion-resistant protective coating coated on the outer surface of the magnet substrate; the corrosion-resistant protective coating is made of a corrosion-resistant protective coating, The corrosion-resistant protective coating includes A component and B component, and the A component includes the following raw materials in parts by weight: 90 parts of bisphenol A epoxy resin, 12 parts of phenolic resin, 10 parts of acrylic resin, polytetrafluoroethylene 5 parts of ethylene, 14 parts of inorganic filler, 14 parts of functional additives, 5 parts of hydroxyethyl cellulose, 4 parts of styrene-acrylic emulsion, 14 parts of zinc powder, 1 part of silane coupling agent, 45 parts of solvent; the B component The following raw materials are included in parts by weight: 2 parts of curing agent and 5 parts of diluent.

[0043] Further, the silane coupling agent is composed of silane ...

Embodiment 3

[0057] In this embodiment, a corrosion-resistant NdFeB magnet includes a NdFeB magnet substrate and a corrosion-resistant protective coating coated on the outer surface of the magnet substrate; the corrosion-resistant protective coating is made of a corrosion-resistant protective coating, The corrosion-resistant protective coating includes A component and B component, and the A component includes the following raw materials in parts by weight: 100 parts of bisphenol A epoxy resin, 20 parts of phenolic resin, 16 parts of acrylic resin, polytetrafluoroethylene 9 parts of ethylene, 20 parts of inorganic filler, 20 parts of functional additives, 10 parts of hydroxyethyl cellulose, 8 parts of styrene-acrylic emulsion, 20 parts of zinc powder, 4 parts of silane coupling agent, 60 parts of solvent; the B component The following raw materials are included in parts by weight: 5 parts of curing agent and 8 parts of diluent.

[0058] Further, the preparation method of the functional auxi...

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Abstract

The invention relates to the technical field of magnets, in particular to a corrosion-resistant NdFeB magnet and a preparation method thereof. The corrosion-resistant NdFeB magnet includes a NdFeB magnet substrate and a corrosion-resistant protective coating coated on the outer surface of the magnet substrate; the corrosion-resistant protective coating includes A component and B component, and the A component includes the following parts by weight Raw materials: 90‑100 parts of bisphenol A epoxy resin, 12‑20 parts of phenolic resin, 10‑16 parts of acrylic resin, 5‑9 parts of polytetrafluoroethylene, 14‑20 parts of inorganic filler, 14‑20 parts of functional additives 5-10 parts of hydroxyethyl cellulose, 4-8 parts of styrene-acrylic emulsion, 14-20 parts of zinc powder, 1-4 parts of silane coupling agent, and 45-60 parts of solvent. The corrosion-resistant protective coating can remarkably improve the corrosion-resistant performance of the magnet substrate, improve its service life and application range; the preparation method of the corrosion-resistant NdFeB magnet is simple in process, easy to operate, high in production efficiency, and conducive to industrial production. The product quality is stable and the comprehensive performance is superior.

Description

technical field [0001] The invention relates to the technical field of magnets, in particular to a corrosion-resistant NdFeB magnet and a preparation method thereof. Background technique [0002] NdFeB magnet is the magnet with the highest commercial performance found at present. It has the characteristics of small size, light weight and strong magnetism. It is a magnet with relatively high performance and price. It is widely used in electronics, electrical machinery, medical equipment, toys, In packaging, hardware machinery, aerospace and other fields, permanent magnet motors, loudspeakers, magnetic separators, computer disk drives, and magnetic resonance imaging equipment are more common. With the development of science and technology and the progress of society, people have higher and higher requirements for the performance of NdFeB magnets. However, the existing NdFeB magnets have poor corrosion resistance and cannot meet the needs in some occasions and fields. its use....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D5/10C09D7/61C09D7/63C09D7/65H01F1/057H01F7/02H01F27/23H01F41/02
CPCC09D163/00C09D5/106C09D7/61C09D7/63C09D7/65H01F7/0221H01F27/23H01F1/057H01F41/026C08K2201/011C08K2003/265C08L33/02C08L27/18C08L25/14C08K3/26C08K3/36C08K3/34C08K5/544C08K5/5435
Inventor 詹前营詹松根徐先国
Owner DONGGUAN CITY JIADA MAGNETOELECTRICITY PROD CO LTD