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A bonded magnet and its preparation method

A technology of bonded magnets and magnetic powders, applied in the field of magnetic therapy, can solve the problems of low bonding strength of magnetic powders and base materials, inability to achieve single-sided unipolarity, resistance to contact, low resistance to strong bending, etc., and achieves easy promotion and is not easy to fall off or loss, the effect of low demagnetization rate

Active Publication Date: 2019-11-01
山东康汇健康科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to achieve single-sided unipolarity for large-area magnets, and it is easy to demagnetize
At the same time, the existing technology still has the disadvantages of large energy consumption, long process, low efficiency, low magnetic storage capacity, poor flexibility, resistance to splicing, strong resistance, low curvature, easy to break, small tensile force, and large thickness; it is prepared by calendering. The flexible magnet also has the disadvantages of low bonding strength between the magnetic powder and the base material, the magnetic powder is easy to fall off from the surface of the magnet, and the demagnetization rate is high, which greatly affects the magnetic properties.
In addition, since magnetic products are often in contact with the human body, they are easily corroded by sweat and affect the magnetic properties
[0007] Therefore, it is necessary to invent a bonded magnet in order to overcome the shortcomings of the current large area that cannot achieve single-sided unipolarity, unstable magnetic properties, low magnetic storage capacity, poor mechanical properties, and large thickness.

Method used

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  • A bonded magnet and its preparation method
  • A bonded magnet and its preparation method
  • A bonded magnet and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] A bonded magnet, the mass ratio of the components of the bonded magnet is as follows: 30 parts of magnetic powder, 3 parts of chlorinated polyethylene, and 0.3 parts of epoxy soybean oil.

[0079] A method for preparing a bonded magnet, comprising the steps of:

[0080] (1) Take each component according to the ratio of mass and number, and use a banbury mixer for banbury mixing, with a pressure of 0.8Mpa, a rotor speed of 75r / min, and a temperature of 140°C. First, put chlorinated polyethylene into the banbury chamber, and After refining for 2 minutes, add epoxidized soybean oil, banbury for 3 minutes, finally add magnetic powder, continue banburying for 2 minutes, lower the temperature to 100°C, banbury for 4 minutes, then raise the temperature to 120°C, banbury for 18 minutes, and release material;

[0081] (2), put the material mixed in the step (1) into a calender for 2 times, and the calendering temperature is 70°C to obtain a magnetic plate with a thickness of 1....

Embodiment 2

[0086] A bonded magnet, the mass ratio of each component of the bonded magnet is as follows: 45 parts of magnetic powder, 3 parts of chlorinated polyethylene, and 0.3 part of epoxy soybean oil.

[0087] A method for preparing a bonded magnet, comprising the steps of:

[0088] (1) Take each component according to the ratio of mass and number, and use a banbury mixer for banbury mixing, with a pressure of 0.8Mpa, a rotor speed of 75r / min, and a temperature of 140°C. First, put chlorinated polyethylene into the banbury chamber, and After refining for 2 minutes, add epoxidized soybean oil, banbury for 3 minutes, finally add magnetic powder, continue banburying for 2 minutes, lower the temperature to 100°C, banbury for 4 minutes, then raise the temperature to 120°C, banbury for 18 minutes, and release material;

[0089] (2), put the material mixed in the step (1) into a calender for 2 times, and the calendering temperature is 70°C to obtain a magnetic plate with a thickness of 1.2...

Embodiment 3

[0094] A bonded magnet, the mass ratio of the components of the bonded magnet is as follows: 78 parts of magnetic powder, 3 parts of chlorinated polyethylene, and 0.3 part of epoxy soybean oil.

[0095] A method for preparing a bonded magnet, comprising the steps of:

[0096] (1) Take each component according to the ratio of mass and number, and use a banbury mixer for banbury mixing, with a pressure of 0.8Mpa, a rotor speed of 75r / min, and a temperature of 140°C. First, put chlorinated polyethylene into the banbury chamber, and After refining for 2 minutes, add epoxidized soybean oil, banbury for 3 minutes, finally add magnetic powder, continue banburying for 2 minutes, lower the temperature to 100°C, banbury for 4 minutes, then raise the temperature to 120°C, banbury for 18 minutes, and release material;

[0097] (2) Put the material mixed in step (1) into a calender for 2 times, and the calendering temperature is 70°C. During the calendering, the magnetic plate is seriousl...

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Abstract

The invention relates to the technical field of magnetotherapy and discloses a bonded magnet. The technical scheme includes that the bonded magnet is prepared from magnetic powder, chlorinated polyethylene, butadiene-acrylonitrile rubber, nano polytetrafluoroethylene, nano boron carbide, polypropylene, 3,4-dimethylbenzal sorbitol, nano calcium carbonate, epoxidized soybean oil, phytic acid and dioctyl phthalate. The bonded magnet which is single-side single-pole magnet is high in efficiency, excellent and stable in magnetic performance, high in processability, moderate in thickness, great in mechanical property and easy in manufacturing of large-area single-side single-pole magnetic plates and can be made into products in different shapes and sizes, and easiness in stamping, punching and winding and convenience in popularization are realized. In addition, the bonded magnet is wide in product application range and can be applied to mattresses, cushions, backrests, sofa cushions, toiletseat cushions and the like.

Description

technical field [0001] The invention relates to the technical field of magnetic therapy, in particular to a bonded magnet and a preparation method thereof. Background technique [0002] The use of magnets to prevent and treat diseases has a history of thousands of years. Magnetic therapy can promote metabolism and activate cells, thereby accelerating the excretion of waste and harmful substances in cells, balancing endocrine, promoting blood circulation, improving microcirculation, and promoting inflammation. Regression, eliminate inflammation, swelling and pain, adjust blood pressure, lower blood pressure, improve red blood cell oxygen carrying capacity, reduce blood viscosity, enhance and improve human immunity, improve the body's resistance to disease, anti-aging effect, eliminate body fat free radicals, improve blood lipid metabolism, reduce cholesterol, eliminate fatigue, promote physical recovery, calm the nervous system, eliminate insomnia and mental stress. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/00H01F41/02A61N2/08
CPCA61N2/06H01F1/00H01F41/0266
Inventor 付晓东姚鼎山
Owner 山东康汇健康科技有限公司
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