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Superparamagnetic electromagnetic composite material, preparation method thereof and high-sensitivity electromagnetic valve

An electromagnetic composite material and superparamagnetic technology, applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc., can solve the problems of electromagnet hysteresis and sensitivity cannot be improved

Inactive Publication Date: 2019-12-13
FOSHAN YIQIANG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The third purpose of the present invention is to provide a high-sensitivity solenoid valve, which uses the above-mentioned electromagnetic composite material to prepare the static iron core and the moving iron core, aiming at solving the problem of insufficient sensitivity caused by the hysteresis of the electromagnet in the existing traditional solenoid valve. raised technical issues

Method used

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  • Superparamagnetic electromagnetic composite material, preparation method thereof and high-sensitivity electromagnetic valve

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Weigh 20g of black nano-ferric oxide powder and 180g of epoxy resin, and then add them together with 200g of zirconia balls into a ball mill for ball milling and mixing. The speed of the ball mill is 40r / min, and the ball milling time is 10h. Then, put the uniformly mixed powder into the mold and dry press to form it. The forming pressure is 5MPa. According to actual needs, it can be made into green parts in the shape of the static iron core and the moving iron core of the solenoid valve. Subsequently, put the obtained green parts into a resistance furnace for curing reaction, the curing temperature is 270 ° C, the time is 120 minutes, after curing, cool to room temperature, and the composite material made of nanometer ferroferric oxide / epoxy resin can be obtained. Solenoid valve parts, such as static iron core, moving iron core.

[0047] Assemble the solenoid valve parts to the solenoid valve for testing. The valve opening time is less than 2 seconds, and the valve clo...

Embodiment 2

[0049]Weigh 60g of black nanometer iron ferric oxide powder and 140g of epoxy resin, and then add them together with 200g of zirconia balls into a ball mill for ball milling and mixing. The speed of the ball mill is 45r / min, and the ball milling time is 10h. Then, put the uniformly mixed powder into the mold and dry press to form it. The forming pressure is 15 MPa. According to actual needs, it can be made into green parts in the shape of the static iron core and the moving iron core of the solenoid valve. Subsequently, put the obtained green part into a resistance furnace for curing reaction, the curing temperature is 270 ° C, the time is 100 min, and after curing, it is cooled to room temperature, and the composite material made of nanometer ferroferric oxide / epoxy resin can be obtained. Solenoid valve parts, such as static iron core, moving iron core.

[0050] Assemble the solenoid valve parts to the solenoid valve for testing. The valve opening time is less than 2 seconds,...

Embodiment 3

[0052] Weigh 100g of black nanometer iron ferric oxide powder and 100g of epoxy resin, and then add them together with 200g of zirconia balls into a ball mill for ball milling and mixing. The speed of the ball mill is 45r / min, and the ball milling time is 15h. Then, put the uniformly mixed powder into the mold and dry press to form it. The forming pressure is 20 MPa. According to actual needs, it can be made into green parts in the shape of the static iron core and the moving iron core of the solenoid valve. Subsequently, put the obtained green parts into a resistance furnace for curing reaction, the curing temperature is 180 ° C, the time is 90 minutes, after curing, cool to room temperature, and the composite material made of nanometer ferroferric oxide / epoxy resin can be obtained. Solenoid valve parts, such as static iron core, moving iron core.

[0053] Assemble the solenoid valve parts to the solenoid valve for testing. The valve opening time is less than 2 seconds, and t...

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Abstract

The invention provides a superparamagnetic electromagnetic composite material, which comprises a raw material A and a raw material B, wherein the raw material A is nano ferroferric oxide, and the rawmaterial B is epoxy resin or polytetrafluoroethylene; and the mass percentage of the raw material A is 10-70%. In addition, the invention also provides a preparation method of the electromagnetic composite material, which comprises the steps of firstly weighing the raw material A and the raw material B, adding the raw materials into a ball mill, carrying out ball milling at a rotating speed of 40-50r / min within 10-20h, uniformly mixing, putting the mixture into a mold, carrying out compression molding under a molding pressure of 5-25MPa, and then carrying out a curing reaction at a temperatureof 180-360 DEG C for 90-120min to obtain the superparamagnetic electromagnetic composite material. Besides, the invention further provides a high-sensitivity electromagnetic valve. The static iron core and the movable iron core with superparamagnetism of the electromagnetic valve are prepared by adopting the preparation method, so that the problem that the sensitivity cannot be improved due to lag of an electromagnet in the existing conventional electromagnetic valve can be solved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a superparamagnetic electromagnetic composite material, a preparation method thereof and a high-sensitivity electromagnetic valve. Background technique [0002] In modern industrial manufacturing, the degree of automation is getting higher and higher, and the application of automatic control components is undoubtedly becoming more and more extensive. As the control element in the system, the solenoid valve's performance parameters are an important link in the control system. One of the most important performance parameters of the solenoid valve is the response time of the solenoid valve. The shorter the response time, the higher the sensitivity. [0003] At present, the response time of the solenoid valves of various manufacturers is uneven, but the response speed of the solenoid valves produced in China is generally slower than that of foreign brand sole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/00H01F1/36H01F41/02
CPCH01F1/0063H01F1/36H01F41/02
Inventor 张鹏李蔚郑文毅
Owner FOSHAN YIQIANG ELECTRONICS
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