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Soft magnetic composite material for integrated injection molded inductor and preparation method thereof

A soft magnetic composite material, injection molding technology, applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc., can solve the problems of low production efficiency, complex induction molding technology and other problems

Inactive Publication Date: 2018-03-09
HANGZHOU QIANSHI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of the existing inductive molding technology such as complex process and low production efficiency, and provide a thermoplastic soft magnetic material process for injection molding and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 27g of silane coupling agent KH-550 and dissolve it in an appropriate amount of deionized water. After it is completely dissolved, add 9kg of manganese zinc ferrite soft magnetic powder, stir evenly, dry at 100°C for 4~6h, cool and crush 1. After sieving, the coupled manganese zinc ferrite soft magnetic powder is obtained.

[0021] Take nylon 6 resin, lubricant stearic acid, and elastomer POE, weigh a total of 1.5 kg of materials according to the mass ratio of 100:1:5, and mix and granulate them with a single-screw extruder at 210~230°C to obtain modified Nylon 6 resin, take out 1Kg modified resin and the above 9Kg soft magnetic powder and mix and granulate them through a twin-screw extruder. The temperature of the barrel of the extruder is set at 245 ° C ~ 265 ° C to obtain soft magnetic materials for inductors that can be directly injected composite material.

[0022] The above granules are injection molded to obtain a magnetic ring (outer diameter, inner diamet...

Embodiment 2

[0024] Take 27g of silane coupling agent KH-550 and dissolve it in an appropriate amount of deionized water. After it is completely dissolved, add 9kg of FeSiCr soft magnetic powder, stir evenly, dry at 100°C for 4~6h, cool, pulverize, and sieve After separation, the coupled iron silicon chromium soft magnetic powder is obtained.

[0025] Take nylon 6 resin, lubricant stearic acid, and elastomer EPDM, weigh a total of 1.5 kg of materials according to the mass ratio of 100:0.5:4.5, and mix and granulate them with a single-screw extruder at 210~230°C to obtain modified Nylon 6 resin, take out 1Kg of modified resin and the above 9Kg of soft magnetic powder, mix and crush them uniformly in an internal mixer, then mix and granulate through a single-screw extruder, where the temperature of the internal mixer is set at 245°C~255°C, The barrel temperature of the single-screw extruder is set at 225°C to 235°C to obtain soft magnetic composite materials for inductors that can be directl...

Embodiment 3

[0028] Take 27g of titanate coupling agent NZD-201 and 9g of phosphoric acid in an appropriate amount of absolute ethanol and mix evenly. After completely dissolving, add 9kg of carbonyl iron powder soft magnetic powder, stir evenly, and vacuum dry at 80°C for 4~ After 6 hours, cool, pulverize and sieve to obtain surface-treated carbonyl iron soft magnetic powder.

[0029] Take nylon 6 resin, lubricant polyamide wax, and elastomer POE, weigh a total of 1.5 kg of materials according to the mass ratio of 100:1:4, and mix and granulate them with a single-screw extruder at 210~230°C to obtain modified Nylon 6 resin: take out 1Kg of modified resin and 9Kg of the above soft magnetic powder, mix and crush them uniformly in an internal mixer, then mix and granulate through a single-screw extruder, where the temperature of the internal mixer is set at 245°C~255°C, The barrel temperature of the single-screw extruder is set at 225°C to 235°C to obtain soft magnetic composite materials fo...

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Abstract

The invention relates to a soft magnetic composite material for an integrated injection molded inductor and a preparation method thereof. The preparation method comprises the following steps: (1) utilizing one of manganese zinc ferrite magnetic powder, carbonyl iron powder, ferrum silicon chromium, ferrum silicon aluminum, cerium ferrum nitrogen and ferrum nickel soft magnetic powder to be meltedand mixed with thermoplastic macromolecule resin to obtain the soft magnetic composite material for the inductor; (2) putting a wound enameled wire coil into a mold cavity of an injection mold, then melting the soft magnetic composite material prepared in the first step, injecting into the mold by an injection molding machine to completely wrap the coil which is arranged in the mold in advance toobtain an inductor device and opening the mold after cooling to obtain the integrated injection molded inductor. Compared with a traditional inductor preparation method and raw materials thereof, theinductor prepared from the soft magnetic composite material disclosed by the invention has the characteristics of simple work procedures, high production efficiency, good sealing performance of inductor products, long service life and low cost.

Description

technical field [0001] The invention relates to the field of soft magnetic materials, in particular to the preparation of a soft magnetic composite material that can be used for one-time injection molding inductors. Background technique [0002] An inductor is a component that can convert electrical energy into magnetic energy and store it; it has the characteristic of preventing the passage of alternating current and allowing direct current to pass smoothly. The higher the frequency, the greater the coil impedance. The inductance of an inductor depends mainly on the number of turns (turns) of the coil, the winding method, the presence or absence of a magnetic core, and the material of the magnetic core. The function of the inductor is to stabilize the current in the circuit and achieve the effect of filtering out noise. The function is similar to that of a capacitor. It also stores and releases the electric energy in the circuit to adjust the stability of the current. Compa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L23/12C08L67/02C08L23/08C08L23/16C08L77/00C08K9/06C08K3/22C08K3/34C08K9/04C08K3/18C08K3/28C08K3/08H01F1/147H01F1/33B29C45/78
Inventor 周凯董玉欣蔡伟王帆王伟王勇杰赵宁宁王鑫姜力强
Owner HANGZHOU QIANSHI TECH
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