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Method for preparing special-shaped magnetic core by thermoplastic injection molded iron-based composite materials

An iron-based composite material, injection molding technology, applied in the direction of organic material/organic magnetic material magnetism, inductance/transformer/magnet manufacturing, electrical components, etc., can solve the problem of difficult-to-form magnetic core forming

Inactive Publication Date: 2014-03-19
陕西烽火诺信科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a method for preparing special-shaped magnetic cores with thermoplastic injection molding iron-based composite materials, melting the magnetic matrix into special thermoplastic materials, utilizing thermoplastic molding technology and injection Special-shaped and miniature magnetic cores are prepared by the unique method, which solves the problem of difficult molding and microstructure magnetic core molding

Method used

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  • Method for preparing special-shaped magnetic core by thermoplastic injection molded iron-based composite materials

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Experimental program
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Effect test

Embodiment 1

[0014] Embodiment 1: To make a kind of miniature "I" magnetic core, the steps are as follows:

[0015] Step 1: Carbonyl iron phosphide powder [Fe(CO) with a purity of 99.7% 5 ] As the main material, thermoplastic polystyrene (HIPS), phenolic resin (PF), organic chemical benzene (C 6 h 6 ), industrial absolute ethanol with a purity of 99.7% as auxiliary materials, according to the main material carbonyl iron phosphide [Fe(CO) 5 ] accounted for 86% by mass, auxiliary materials thermoplastic polystyrene (HIPS), phenolic resin (PF), organic chemical benzene (C 6 h 6 ) accounted for 12.1%, 1.3%, and 0.6% by mass, mix them, put the mixture in a high-speed mixer at room temperature, stir and mix at a speed of 200 rpm, and then melt at a temperature of 240°C , and then cooled to room temperature in the air, put it into a roller ball mill for grinding, and the grinding balls are steel balls with a volume ratio of ￠3:￠6:￠10 of 1:1:1 to obtain granular isotropic iron-based Composite...

Embodiment 2

[0021] Step 1: Carbonyl iron phosphide powder [Fe(CO) with a purity of 99.7% 5 ] As the main material, thermoplastic polystyrene (HIPS), phenolic resin (PF), organic chemical benzene (C 6 h 6 ), industrial absolute ethanol with a purity of 99.7% as auxiliary materials, according to the main material carbonyl iron phosphide [Fe(CO) 5 ] accounted for 90.8% by mass, auxiliary materials thermoplastic polystyrene (HIPS), phenolic resin (PF), organic chemical benzene (C 6 h 6 ) accounted for 6.8%, 1.72%, and 0.68% by mass, mix them, put the mixture in a high-speed mixer at room temperature and mix it at a speed of 200 rpm, and then melt it at a temperature of 240°C , and then cooled to room temperature in the air, put it into a roller ball mill for grinding, and the grinding balls are steel balls with a volume ratio of ￠3:￠6:￠10 of 1:1:1 to obtain granular isotropic iron-based Composite magnetic materials;

[0022] Step 2: Mix the novolak varnish with brand name X98-11 and indu...

Embodiment 3

[0027] Step 1: Carbonyl iron phosphide powder [Fe(CO) with a purity of 99.7% 5 ] As the main material, thermoplastic polystyrene (HIPS), phenolic resin (PF), organic chemical benzene (C 6 h 6 ), industrial absolute ethanol with a purity of 99.7% as auxiliary materials, according to the main material carbonyl iron phosphide [Fe(CO) 5 ] accounted for 91% by mass, auxiliary materials thermoplastic polystyrene (HIPS), phenolic resin (PF), organic chemical benzene (C 6 h 6 ) accounted for 7.08%, 1.2%, and 0.72% by mass, mix them, put the mixture in a high-speed mixer at room temperature, stir and mix at a speed of 200 rpm, and then melt it at a temperature of 240°C , and then cooled to room temperature in the air, put it into a roller ball mill for grinding, and the grinding balls are steel balls with a volume ratio of ￠3:￠6:￠10 of 1:1:1 to obtain granular isotropic iron-based Composite magnetic materials;

[0028] Step 2: Mix the novolak varnish with brand name X98-11 and ind...

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Abstract

A method for preparing a special-shaped magnetic core by thermoplastic injection molded iron-based composite materials is mainly characterized in that a carbonyl iron powder magnetic core with a complicated structure or a small size is machined by the aid of a fluid forming process, phosphate carbonyl iron powder serves a main material, thermoplastic polystyrene, phenolic resin, organic chemical benzene and industrial absolute alcohol serve as auxiliary materials, uniformly mixed isotropic iron-based composite materials with high magneto-rheological effect are prepared by the aid of melt blending technology and are crushed, iron-based powder is driven to sufficiently fill a mould cavity by flowability of thermoplastic polystyrene polymer materials under the condition of a certain temperature, a certain magnetic field and a certain pressure, and complicated parts can be formed by cooling and demoulding. The prepared miniature or special-shaped magnetic core is high in quality factor and fine in magnetic performance, the problem of difficulty in forming is solved, and the magnetic core with a miniature structure can be formed.

Description

technical field [0001] The invention relates to the technical field of fluid forming, in particular to a method for preparing a special-shaped magnetic core by using thermoplastic injection molding iron-based composite materials. Background technique [0002] Carbonyl iron powder material is a black solid metal material, which itself has no fluidity. Polystyrene material is a colorless transparent granular solid at room temperature, non-toxic, tasteless, soluble in organic solvents, and has high resistivity. , is a good insulation, heat insulation, high resistance material, melting temperature 200 ℃, at this temperature, thermal stability, heat flow fluidity is good. The magnetic core made of carbonyl iron powder is an important functional material in the field of communication, as well as a basic material, which is widely used in communication, power, sensing, audio-visual, and lighting equipment. [0003] With the development of information technology and digital technolo...

Claims

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Application Information

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IPC IPC(8): H01F41/02H01F1/42B22F1/00B22F3/20B22F3/22B22F9/04B29C45/77B29C45/78
Inventor 郭延宾龙拉怀包真明赵艳赵凡高蕾
Owner 陕西烽火诺信科技有限公司
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