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Corrosion-resistant composite protective layer material for neodymium iron boron

A protective layer, neodymium-iron-boron technology, applied in the direction of anti-corrosion coatings, fire-proof coatings, coatings, etc., can solve the problems of weak bonding, poor wear resistance and weather resistance of coatings, and large environmental pollution, and achieve strong bonding, Effect of improving weather resistance and service life

Active Publication Date: 2020-04-28
ZHEJIANG ZHONGHANG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of organic coatings has problems such as weak bonding between organic polymer coatings and NdFeB substrates, large environmental pollution during surface treatment, poor wear resistance and weather resistance of coatings, etc.

Method used

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  • Corrosion-resistant composite protective layer material for neodymium iron boron
  • Corrosion-resistant composite protective layer material for neodymium iron boron
  • Corrosion-resistant composite protective layer material for neodymium iron boron

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Experimental program
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Effect test

Embodiment 1

[0035] This embodiment is used for the corrosion-resistant composite protective layer material of neodymium iron boron, which includes:

[0036] A base layer, the base layer is spin-coated on neodymium iron boron; and

[0037] A protective layer, the protective layer is coated on the base layer;

[0038] The protective layer is composed of the following parts by weight of raw materials: 15 parts fluorine-containing methacrylate, 40 parts epoxy resin, 50 parts vinyl epoxy resin, 7 parts additives, 1 part curing agent, 1.5 parts filler and 30 parts. Parts of deionized water.

[0039] The base layer is composed of the following parts by weight of raw materials: 45 parts epoxy resin, 20 parts hydroxy epoxy resin, 3 parts additive, 2 parts triisocyanate compound, 1 part hexamethylene diisocyanate, 0.1 part organotin catalyst , 0.5 parts of nano titanium dioxide and 35 parts of deionized water.

[0040] The additive is calix[4] arene.

[0041] The structural formula of the calix[4]arene is s...

Embodiment 2

[0054] This embodiment is used for the corrosion-resistant composite protective layer material of neodymium iron boron, which includes:

[0055] A base layer, the base layer is spin-coated on neodymium iron boron; and

[0056] A protective layer, the protective layer is coated on the base layer;

[0057] The protective layer is composed of the following parts by weight of raw materials: 10 parts of fluorine-containing methacrylate, 30 parts of epoxy resin, 40 parts of vinyl epoxy resin, 5 parts of additives, 0.5 parts of curing agent, 1 part of filler and 20 parts Parts of deionized water.

[0058] The base layer is composed of the following parts by weight of raw materials: 30 parts epoxy resin, 10 parts hydroxy epoxy resin, 1 part additive, 1 part triisocyanate compound, 0.5 part hexamethylene diisocyanate, 0.05 part organotin catalyst , 0.1 part of nano titanium dioxide and 20 parts of deionized water.

[0059] The additive is calix[4] arene.

[0060] The structural formula of the c...

Embodiment 3

[0073] This embodiment is used for the corrosion-resistant composite protective layer material of neodymium iron boron, which includes:

[0074] A base layer, the base layer is spin-coated on neodymium iron boron; and

[0075] A protective layer, the protective layer is coated on the base layer;

[0076] The protective layer is composed of the following parts by weight of raw materials: 20 parts fluorine-containing methacrylate, 50 parts epoxy resin, 60 parts vinyl epoxy resin, 10 parts additives, 1.5 parts curing agent, 2.5 parts filler and 50 parts Parts of deionized water.

[0077] The base layer is composed of the following parts by weight of raw materials: 60 parts epoxy resin, 30 parts hydroxy epoxy resin, 5 parts additive, 3 parts triisocyanate compound, 1.5 parts hexamethylene diisocyanate, 0.15 parts organotin catalyst , 1 part of nano titanium dioxide and 50 parts of deionized water.

[0078] The additive is calix[4] arene.

[0079] The structural formula of the calix[4]arene...

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Abstract

The invention discloses a corrosion-resistant composite protective layer material for neodymium iron boron, and the composite protective layer material comprises: a substrate layer which is spin-coated on the neodymium iron boron; a protective layer coated on the substrate layer, wherein the protective layer is prepared from the following raw materials in parts by weight: 10-20 parts of fluorine-containing methacrylate, 30-50 parts of epoxy resin, 40-60 parts of vinyl epoxy resin, 5-10 parts of an additive, 0.5-1.5 parts of a curing agent, 1-2.5 parts of a filler and 20-50 parts of deionized water. According to the composite protective layer material, through the arrangement of the double-layer structure of the base layer and the protective layer, the surface corrosion resistance of the neodymium-iron-boron permanent magnet can be improved, the wear resistance and the heat resistance of the neodymium-iron-boron permanent magnet can be improved, and the service life of the neodymium-iron-boron surface protective layer is prolonged.

Description

Technical field [0001] The invention relates to the technical field of neodymium iron boron, in particular to a corrosion-resistant composite protective layer material for neodymium iron boron. Background technique [0002] NdFeB is divided into two types: sintered NdFeB and bonded NdFeB. Bonded NdFeB has magnetism in all directions and is corrosion-resistant; while sintered NdFeB is easy to corrode, and the surface needs to be coated, generally galvanized, Nickel, environmental protection zinc, environmental protection nickel, nickel copper nickel, environmental protection nickel copper nickel, etc. Compared with traditional permanent magnet materials, sintered neodymium iron boron permanent magnets have excellent characteristics and price, and have been widely used in computers, motors, electric vehicles, instrumentation, magnetic transmission bearings, high-fidelity speakers, nuclear magnetic resonance imaging and Various industries such as aerospace and aviation. Relying on...

Claims

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Application Information

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IPC IPC(8): C09D163/10C09D163/00C09D5/08
CPCC08K2003/2241C08K2201/011C08L2201/08C08L2205/02C08L2205/025C09D5/08C09D5/18C09D163/00C09D163/10C08L63/00C08K5/13C08K3/346C08K3/34C08K13/02C08K3/22C08K5/29
Inventor 徐嘉诚
Owner ZHEJIANG ZHONGHANG NEW MATERIAL
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