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Magnetic composite material for multistage magnetic encoder and preparation method thereof

A magnetic composite material and magnetic encoder technology, applied in the field of composite materials, can solve the problems of low tensile strength, susceptibility to corrosion, and poor impact resistance of magnetic rubber materials, and achieve uniform magnetic induction intensity, good impact resistance, and good resistance. Corrosive effect

Active Publication Date: 2013-02-27
QINGDAO UNIV OF SCI & TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the NdFeB alloy permanent magnet material used has poor impact resistance and is susceptible to corrosion, it needs to be coated
CN200710306598.7 discloses a magnetic material with high magnetic induction intensity, which is a composite magnetic material formed by ferrite with a particle size of 100-300 mesh and natural rubber. Due to the large particle size of ferrite, the prepared magnetic rubber material low tensile strength
The above patents are difficult to meet the requirements of magnetic encoders for high hardness, high elongation and high strength, and none of the above patents involves the magnetization accuracy of multi-level magnetization

Method used

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  • Magnetic composite material for multistage magnetic encoder and preparation method thereof
  • Magnetic composite material for multistage magnetic encoder and preparation method thereof
  • Magnetic composite material for multistage magnetic encoder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A magnetic composite material for a multi-level magnetic encoder, the main components of the composite material are as follows:

[0029] Material

Composition (kg)

Remark

NBR

100

Substrate

ZnO

5

activator

stearic acid

2

activator

MB

2

Antiaging agent

445

0.5

Antiaging agent

N330

40

Reinforcing agent

DOP

10

plasticizer

Ferrite powder

850

magnetic material

Titanate coupling agent

5

coupling agent

DM (benzothiazole disulfide)

3

vulcanization accelerator

[0030] TAIC

2.4

vulcanization accelerator

S

0.5

Vulcanizing agent

DCP

4

Vulcanizing agent

Zinc stearate

10

Dispersant

[0031] The ferrite powder is a mixture of strontium ferrite, barium ferrite and cobalt ferrite in any ratio, and its particle s...

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PUM

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Abstract

The invention relates to the field of composite materials, and provides a magnetic composite material for a multistage magnetic encoder and a preparation method thereof. The magnetic composite material mainly comprises nitrile rubber and ferrite, and is prepared by banburying and mixing by an internal mixer and vulcanization molding. The magnetic composite material has good corrosion resistance, impact resistance and good thermal stability, and especially highly uniform magnetic induction intensity, and change rate of magnetic induction less than 2% after multistage magnetizing. The magnetic composite material can be used in the production of an anti-lock braking system (ABS) magnetic encoder.

Description

technical field [0001] The invention relates to the field of composite materials, and in particular provides a magnetic composite material for a multistage magnetic encoder and a preparation method thereof. Background technique [0002] With the development of electronic magnetic components, soft magnetic components are developing towards high frequency, low loss, high temperature resistance, and strong anti-interference; permanent magnet components are developing towards high remanence, high coercive force, and high magnetic energy. Productivity, wide temperature range direction. Especially for the magnetic components used in automobiles, because the automobiles operate under special working conditions with high vibration and high temperature, higher requirements are put forward for the matching magnetic components. For example, the working temperature range is extended to -50°C to 150°C, and it is required to increase the strength of the magnetic material body to cope wit...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08K13/02C08K3/22C08K5/09H01F1/42B29B7/00
Inventor 刘莉杜胜吕同策王永刚张保岗
Owner QINGDAO UNIV OF SCI & TECH
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