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High-coercivity neodymium iron boron magnetic material and preparation method thereof

A magnetic material, high coercivity technology, applied in the direction of magnetic material, magnetic object, inorganic material magnetism, etc., can solve the problem that mechanical properties cannot be guaranteed, and achieve the effect of good machinability and high magnetic properties

Active Publication Date: 2016-02-03
宁波可可磁业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In conclusion, magnetic composite materials in the prior art cannot guarantee good mechanical properties

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The raw material ratio of this embodiment 1 is as follows: 30 parts of dysprosium and neodymium, 30 parts of ferroniobium boron, 10 parts of neodymium iron boron, 1 part of aluminum oxide, 15 parts of ferric oxide, 3 parts of nano-sized tetragonal zinc oxide, 14 parts of neodymium oxide 8 parts, 8 parts of carbon black, 2 parts of coupling agent, 40 parts of epoxy resin, 30 parts of butyl rubber, 15 parts of methyl acrylate, 4 parts of graphite powder. The production method of the high magnetic energy NdFeB magnetic material comprises the following steps: step 1, placing dysprosium neodymium, niobium ferroboron and neodymium iron boron in zinc phosphate solution for 1h soaking, then rinsing with citric acid solution for 1h, and then Soak in clean water for 2 hours; step 2, then stir and dry at 50°C for 1 hour to form NdFeB magnetic powder; step 3, mix aluminum oxide, ferric oxide, nano-sized tetragonal zinc oxide, neodymium oxide and carbon black in parts by weight , st...

Embodiment 2

[0021] The raw material ratio of this embodiment 2 is as follows: 20 parts of dysprosium and neodymium, 20 parts of ferroniobium boron, 5 parts of neodymium iron boron, 1 part of aluminum oxide, 10 parts of ferric oxide, 3 parts of nano-sized tetragonal zinc oxide, 12 parts of neodymium oxide parts, 8 parts of carbon black, 5 parts of coupling agent, 45 parts of epoxy resin, 20 parts of butyl rubber, 10 parts of methyl acrylate, and 5 parts of graphite powder. The production method of the high-energy NdFeB magnetic material comprises the following steps: step 1, placing dysprosium neodymium, niobium ferroboron and neodymium iron boron in zinc phosphate solution for 0.5h soaking, and then rinsing with citric acid solution for 0.5h , and then soaked in water for 2 hours; Step 2, then stirred and dried at 70°C for 2 hours to form NdFeB magnetic powder; Carbon black, stir and disperse evenly on the magnetic powder, mix evenly to form a magnetic mixed powder; step 4, heat up epoxy ...

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Abstract

The invention discloses a high-coercivity neodymium iron boron magnetic material and a preparation method thereof. The high-coercivity neodymium iron boron magnetic material is prepared from the following raw materials in parts by weight: 18 to 28 parts of dysprosium neodymium, 18 to 28 parts of niobium iron boron, 5 to 10 parts of neodymium iron boron, 1 to 3 parts of aluminum oxide, 10 to 15 parts of iron trioxide, 3 to 5 parts of nanoscale tetrapod-like zinc oxide, 12 to 14 parts of neodymium oxide, 5 to 8 parts of carbon black, 2 to 5 parts of coupling agent, 2 to 5 parts of graphite powder, 40 to 45 parts of epoxy resin, 18 to 28 parts of butyl rubber and 10 to 15 parts of methyl acrylate. The high-coercivity neodymium iron boron magnetic material has high magnetic energy product and coercivity and good magnetic performance and can meet the requirements of a majority of electronic products.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a high-coercivity neodymium-iron-boron magnetic material and a preparation method thereof. Background technique [0002] With the continuous improvement of the technology and equipment of NdFeB enterprises in recent years, there will be more and more high-performance NdFeB application products in my country, and the requirements for them will be higher and higher. However, the magnetic properties of the NdFeB magnetic materials currently on the market cannot meet the needs of use, and the manufacturing process is complicated, so further improvement is needed to improve the performance. [0003] As in the prior art, due to compatibility problems, the mechanical properties of the processed plastic-based magnetic composite materials are mostly unsatisfactory. Specifically, for example, the application number: 201410024032.5 invention application discloses a method for d...

Claims

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Application Information

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IPC IPC(8): H01F1/057H01F1/09B22F1/00
Inventor 冯伟
Owner 宁波可可磁业股份有限公司
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