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 rub

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
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Effect test

Example Embodiment

[0027] Example 1

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

[0029] Material

[0030] TAIC

[0031] The ferrite powder is any ratio mixture of strontium ferrite, barium ferrite, and cobalt ferrite, and its particle size is 100-300 nanometers.

[0032] Processing method I is:

[0033] (1) Rubber mixing: using a conventional open mill, according to the basic formula dosage in Table 1. First, after the nitrile rubber is plasticized for 1 minute, the composition is added in the order of activator, vulcanization aid, and antioxidant, and mixed Evenly

[0034] Then add carbon black (N330) to the above mixture according to the formula dosage, and mix it uniformly; then add the ferrite powder to the above mixture according to the formula dosage, and after mixing it evenly, pass it through 5 times; Add vulcanizing agent in proportion to the mixture, mix evenly and thinly pass the film, and then ...

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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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