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Soft magnetic powder applied to integrated molded inductors and preparation method thereof

A soft magnetic powder and molding technology, which is applied in the manufacture of inductors/transformers/magnets, circuits, electrical components, etc., can solve problems such as inability to improve high temperature resistance

Inactive Publication Date: 2019-05-21
NINGBO YUNSHENG ELECTRONIC COMPONENTS TECHNOLOGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The integrated molded inductor has a unique structure in which the coil is embedded in the magnetic powder, and the enameled wire film layer of the coil cannot withstand the high temperature of 250-500°C. Therefore, ceramic powder and high-temperature annealing treatment cannot be applied to the field of integrated molded inductors to improve the high temperature resistance.

Method used

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  • Soft magnetic powder applied to integrated molded inductors and preparation method thereof
  • Soft magnetic powder applied to integrated molded inductors and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] Embodiment 1: A soft magnetic powder for integrally molded inductors is prepared by using metal soft magnetic alloy powder with a particle size of 16-80um, a resin system, a passivating agent and a lubricant, and the weight of the passivating agent is the metal soft magnetic alloy The weight of the powder is 0.05%, the weight of the lubricant is 0.1% of the weight of the metal soft magnetic alloy powder, and the weight of the resin system is 0.5% of the weight of the metal soft magnetic alloy powder.

[0028] In this embodiment, the resin system includes a first resin component and a second resin component, the weight of the first resin component is 70% of the weight of the resin system, and the weight of the second resin component is 30% of the weight of the resin system; A resin component includes resin component A with a glass transition temperature greater than or equal to 180°C, resin component B with a glass transition temperature greater than or equal to 155°C and...

Embodiment 2

[0031] Embodiment 2: A soft magnetic powder for integrally molded inductors is prepared by using metal soft magnetic alloy powder with a particle size of 16-80um, a resin system, a passivating agent and a lubricant, and the weight of the passivating agent is the metal soft magnetic alloy The weight of the powder is 2%, the weight of the lubricant is 5% of the weight of the metal soft magnetic alloy powder, and the weight of the resin system is 8% of the weight of the metal soft magnetic alloy powder.

[0032] In this embodiment, the resin system includes a first resin component and a second resin component, the weight of the first resin component is 100% of the weight of the resin system, and the weight of the second resin component is 0% of the weight of the resin system; A resin component includes resin component A with a glass transition temperature greater than or equal to 180°C, resin component B with a glass transition temperature greater than or equal to 155°C and less t...

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Abstract

The invention discloses soft magnetic powder applied to integrated molded inductors and a preparation method thereof. The soft magnetic powder is prepared from metal soft magnetic alloy powder with aparticle size of 16-80 microns, a resin system, a passivator and a lubricant, wherein the weight of the passivator accounts for 0.05-2% of the weight of the metal soft magnetic alloy powder; the weight of the lubricant accounts for 0.1-5% of the weight of the metal soft magnetic alloy power; the weight of the resin system accounts for 0.5-8% of the weight of the weight of the metal soft magnetic alloy power. The soft magnetic powder has the advantage of excellent resistance to high temperature and low temperature.

Description

technical field [0001] The invention relates to a soft magnetic powder, in particular to a soft magnetic powder for an integrally molded inductor and a preparation method thereof. Background technique [0002] One-piece molded inductor is a kind of molded inductor prepared by one-piece molding process. Its main materials include soft magnetic powder, coil and electrode pins. The coil and electrode pins are placed in soft magnetic powder for compression molding, and then molded after curing. Inductor, the coil is located inside the inductor body formed by soft magnetic powder, and the electrode pins are drawn from the inductor body to the outside. The one-piece molded inductor has the advantages of closed magnetic circuit, anti-electromagnetic interference, high installation density, and is especially suitable for SMT technology. It is mainly used as an energy storage or filter device in electronic circuits. At present, integrated molded inductors have been widely used in in...

Claims

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Application Information

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IPC IPC(8): H01F1/33H01F41/00
Inventor 徐文正梁金坤蔡平平
Owner NINGBO YUNSHENG ELECTRONIC COMPONENTS TECHNOLOGY CO LTD
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