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Preparation method of a novel amorphous magnetic core binder

A binder and magnetic core technology, applied in the magnetic field of inorganic materials, can solve the problems of high cost of use, easy oxidation of micron-sized copper powder, and difficult operation, and achieve improved magnetic performance, small internal stress, and simple operation Effect

Active Publication Date: 2020-10-30
ANHUI DEV NONCRYSTAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is difficult to disperse the copper powder evenly in the alloy powder, and the micron-sized copper powder is easy to oxidize, the operation is difficult, and the use cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] According to MnZnFe 2 o 4 Molecular formula, configuration FeSO 4 , MnSO 4 and ZnSO 4 Mix the solution, then add n-hexanol and surfactant cetyl ammonium bromide to the solution to make a water-in-oil inverse emulsion, then use NaOH solution as a precipitant, H 2 o 2 Manganese zinc ferrite powder is prepared as an oxidant, and the manganese zinc ferrite powder is crushed to 2um-4um by jet mill, and then graded, of which 2um powder is 30%, 3um powder is 50%, 4um 20% of powder, configure acetone, methyltrichlorosilane, dimethyldichlorosilane mixed solution, then dropwise add acetone aqueous solution, filter and separate to obtain hydrolyzate, then add a certain amount of condensation catalyst, then wash it with water, reduce Pressing and removing the solvent to obtain the base material of methylphenyl silicone resin, the methylphenyl silicone resin is configured into a solution with a mass fraction of 50% with xylene, and stirred and dispersed for 1h, and the mass fra...

Embodiment 2

[0024] According to MnZnFe 2 o 4 Molecular formula, configuration FeSO 4 , MnSO 4 and ZnSO 4 Mix the solution, then add n-hexanol and surfactant cetyl ammonium bromide to the solution to make a water-in-oil inverse emulsion, then use NaOH solution as a precipitant, H 2 o 2 Manganese zinc ferrite powder is prepared as an oxidant, and the manganese zinc ferrite powder is crushed to 2um-4um by jet mill, and then graded, of which 2um powder is 30%, 3um powder is 50%, 4um 20% of powder, configure acetone, methyltrichlorosilane, dimethyldichlorosilane mixed solution, then dropwise add acetone aqueous solution, filter and separate to obtain hydrolyzate, then add a certain amount of condensation catalyst, then wash it with water, reduce Pressing and removing the solvent to obtain the base material of methylphenyl silicone resin, the methylphenyl silicone resin is configured into a solution with a mass fraction of 50% with xylene, and stirred and dispersed for 1h, and the mass fra...

Embodiment 3

[0026] According to MnZnFe 2 o 4 Molecular formula, configuration FeSO 4 , MnSO 4 and ZnSO 4 Mix the solution, then add n-hexanol and surfactant cetyl ammonium bromide to the solution to make a water-in-oil inverse emulsion, then use NaOH solution as a precipitant, H 2 o 2 Manganese zinc ferrite powder is prepared as an oxidant, and the manganese zinc ferrite powder is crushed to 2um-4um by jet mill, and then graded, of which 2um powder is 30%, 3um powder is 50%, 4um 20% of powder, configure acetone, methyltrichlorosilane, dimethyldichlorosilane mixed solution, then dropwise add acetone aqueous solution, filter and separate to obtain hydrolyzate, then add a certain amount of condensation catalyst, then wash it with water, reduce Pressing and removing the solvent to obtain the base material of methylphenyl silicone resin, the methylphenyl silicone resin is configured into a solution with a mass fraction of 50% with xylene, and stirred and dispersed for 1h, and the mass fra...

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Abstract

The invention provides a method for preparing a novel amorphous magnetic core binder and relates to the related technical field of preparing bound magnetic cores. The method comprises the steps of according to a molecular formula MnZnFe2O4, preparing a mixed solution of FeSO4, MnSO4 and ZnSO4, adding hexanol and a surfactant: cetyl ammonium bromide into the solution to prepare a water-in-oil reverse emulsion, preparing a manganese zinc ferrite powder by taking a NaOH solution as a precipitant and H2O2 as an oxidant, washing by using water, decompressing and desolventizing to obtain a methylphenyl silicone resin base material, adding the graded manganese zinc ferrite powder and a coupling agent KH-550, mixing, stirring and grinding for 4h to finally obtain a finished product. The method provided by the invention has the beneficial effects that silicon dioxide fine particles serving as filler in the binder is replaced by the manganese zinc ferrite powder, so that on the one hand, the magnetic performance of a magnetic core is increased and the coercive force of the magnetic core is reduced, on the other hand, the magnetic performance of the magnetic core is also increased while the powder core preparing process is not affected; and the method has the advantages that the operation is simple and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field related to the preparation of bonded magnetic cores, in particular to a preparation method of a novel amorphous magnetic core binder. Background technique [0002] Due to the absence of grains and grain boundaries, amorphous alloy materials exhibit a series of excellent soft magnetic properties, such as: easy magnetization, low coercive force, high magnetic permeability, and large saturation magnetization, but their resistivity is low. Therefore, the eddy current loss is larger. Amorphous magnetic cores can effectively increase the resistivity of the material and reduce eddy current loss by adding a binder, but because the filler in the binder is not magnetic, it only increases the resistivity, but hinders the magnetic core. Further improvement of soft magnetic properties. [0003] Patent CN104067358A discloses a powder magnetic core, a coil component and a manufacturing method of a powder magnetic core, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/37
CPCH01F1/37
Inventor 徐玉川
Owner ANHUI DEV NONCRYSTAL EQUIP CO LTD