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Soft magnetic ferrite material with electromagnetic shielding performance

A soft magnetic ferrite and electromagnetic shielding technology, applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc., can solve the problem of reducing the saturation magnetization of materials, reduce molding pressure, improve impedance characteristics and magnetic permeability, and good durability The effect of thermal shock

Inactive Publication Date: 2017-01-04
ANHUI DEXIN ELECTRIC
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AI Technical Summary

Problems solved by technology

However, the general organic or inorganic coating layer has non-magnetic characteristics. After compounding with metal magnetic particles, it will also reduce the saturation magnetization of the material to a certain extent. Loss while maintaining high density and saturation magnetization is the focus of current research

Method used

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Embodiment Construction

[0013] A soft magnetic ferrite material with electromagnetic shielding performance, prepared from the following raw materials in parts by weight: hydroxyl iron powder 60, ferric oxide 10, manganese oxide 25, zinc oxide 21, silane coupling agent kh5704, organic silicon Resin 5, polyvinyl alcohol 1, sodium silicate 7, ferrocene powder 0.5, straw ash 0.3, potassium permanganate 0.4, appropriate amount of water;

[0014] The soft ferrite material with electromagnetic shielding performance is prepared by the following specific steps:

[0015] (1) Mix and ball-mill hydroxy iron powder, ferric oxide, manganese oxide, zinc oxide and silane coupling agent kh570 for 0.5h, then dissolve the silicone resin with 4 times the amount of acetone, and then add the above coupling magnetic powder to Stir in the organosilicon solution for 0.6h, then dry at 40°C for 1h and pulverize for later use;

[0016] (2) Mix the remaining materials except polyvinyl alcohol and sodium silicate, grind and disp...

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Abstract

The invention discloses a soft magnetic ferrite material with electromagnetic shielding performance. The soft magnetic ferrite material is prepared from the following raw materials in parts by weight: 60-65 parts of hydroxy iron powder, 10-15 parts of ferric oxide, 25-27 parts of manganese oxide, 21-23 parts of zinc oxide, 4-5 parts of silane coupling agent kh570, 5-7 parts of organic silicon resin, 1-2 parts of polyvinyl alcohol, 7-9 parts of sodium silicate, 0.5-0.6 part of ferrocene powder, 0.3-0.4 part of straw ash, 0.4-0.5 part of potassium permanganate and a right amount of water. The soft magnetic ferrite material has the advantages of simple preparation method, reasonable technique and low cost. The prepared magnetic core material has the advantages of favorable electromagnetic shielding performance, favorable heat shock resistance, favorable use effect, long service life and the like, and can not be easily damaged.

Description

technical field [0001] The invention relates to the technical field of ferrite materials, in particular to a soft ferrite material with electromagnetic shielding performance. Background technique [0002] Soft magnetic material is a kind of magnetic material with low coercive force and high magnetic permeability. Under the action of external magnetic field, soft magnetic material shows the characteristics of easy magnetization and easy demagnetization. Soft magnetic material is used as magnetoelectric conversion It is one of the important functional materials in the field, and has a wide range of applications in the fields of electronic equipment, communications and electrical appliances. With the popularization of digital TV sets and notebook computers, electronic equipment is becoming lighter, thinner, and miniaturized. This will inevitably reduce the size of the power supply, and put forward higher and stricter requirements for the power supply. Due to the characteristic...

Claims

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Application Information

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IPC IPC(8): C04B35/38C04B35/622H01F1/34
CPCC04B35/2608C04B35/2658C04B35/2691C04B35/622C04B2235/3201C04B2235/3427C04B2235/405H01F1/344
Inventor 李马林
Owner ANHUI DEXIN ELECTRIC
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