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Ferrite material, laminated sheet type inductor and preparation method of laminated sheet type inductor

A ferrite material and ferrite technology, used in the manufacture of inductors, inductors/transformers/magnets, fixed inductors, etc., can solve the problems of high cost, high energy consumption, environmental pollution, etc., and reduce production costs. , excellent rheological properties and shrinkage properties, the effect of excellent performance

Active Publication Date: 2014-12-31
SHENZHEN ZHENHUA FU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a ferrite material casted by water-based solvents, so as to overcome the shortcomings of poisoning the human body and polluting the environment when using organic solvents to make ferrite materials in the prior art
[0008] Another object of the present invention is to provide a method for manufacturing laminated chip inductors, which overcomes the shortcomings of high cost, large energy consumption, and environmental pollution caused by the use of organic solvents in the manufacture of laminated chip inductors in the prior art

Method used

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  • Ferrite material, laminated sheet type inductor and preparation method of laminated sheet type inductor
  • Ferrite material, laminated sheet type inductor and preparation method of laminated sheet type inductor
  • Ferrite material, laminated sheet type inductor and preparation method of laminated sheet type inductor

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preparation example Construction

[0032] The present invention provides a ferrite material and a laminated chip inductor, including the above-mentioned ferrite diaphragm (that is, the insulating layer), which is tape-casted, dried and then cut with the above-mentioned ferrite material as raw material. Cut preparation, and the preparation method of the above-mentioned laminated chip inductor.

[0033] A ferrite material is characterized in that it comprises the following components by weight percentage:

[0034]

[0035] Wherein, the above-mentioned adhesive is polyvinyl alcohol or a composite adhesive of polyvinyl alcohol and water-based acrylic acid.

[0036] Preferably, the above-mentioned ferrite material includes the following components by weight percentage:

[0037]

[0038]

[0039] Wherein, the above-mentioned adhesive is polyvinyl alcohol or a composite adhesive of polyvinyl alcohol and water-based acrylic acid.

[0040] Specifically, the above-mentioned ferrite powder is a self-produced po...

Embodiment 1

[0082] (1) According to the data shown in Table 1 below, prepare 1# to 5# water-based cast ferrite material slurry and 6# to 10# comparative slurry: mix ferrite powder, bond Agent, solvent, plasticizer, dispersant, emulsifier and defoamer are mixed according to the proportioning in Table 1, wherein, the ferrite powder is 50 parts, the time of ball milling is 38 hours, and the material-ball ratio is 1 : 3, the speed of the ball mill is 50rpm, and then vacuumize for 18min to remove bubbles, the vacuum degree is ≤10 -9 MPa, passing through a 300-mesh sieve to remove particles and air bubbles to obtain a water-based tape-cast ferrite material slurry. If a mixed binder is used, first mix the solvent with polyvinyl alcohol and then ball mill for 4 hours to allow the polyvinyl alcohol to fully dissolve, then add water-based acrylic acid, ball mill for another 2 hours, and then add other components for mixed ball milling.

[0083] Among them, the preparation method of ferrite powder ...

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Abstract

The invention provides a ferrite material, a laminated sheet type inductor and a preparation method of the laminated sheet type inductor, wherein the ferrite material comprises the following components by the weight percentage: 32-52 parts of a ferrite powder, 4-9 parts of an adhesion agent, 40-60 parts of a solvent, 1.5-5 parts of a plasticizer, 0.5-2.5 parts of a dispersion agent, 0.5-3 parts of an emulsifier, and 0.05-0.25 part of a defoaming agent, wherein the adhesion agent is polyvinyl alcohol or a compound adhesion agent of polyvinyl alcohol and water-borne acrylic acid. The ferrite material provided by the invention adopts a water-based solvent system; and with the synergistic effect among the components, the ferrite material has excellent rheological property and shrinkage property and can eliminate bubbles and needle eyes on a thin strip, and thus an excellent-performance ferrite membrane sheet and the excellent-performance thinning laminated sheet type inductor are obtained, and the defects of VOC emissions, high production cost and large energy consumption caused due to the use of organic solvents in an traditional inductor production are reduced.

Description

technical field [0001] The invention relates to the field of electronic devices, in particular to a ferrite material, a laminated chip inductor and a preparation method thereof. Background technique [0002] With the development of electronic products in the direction of miniaturization, thinning and high frequency, higher requirements are put forward for electronic components. Chip components conform to the development trend of miniaturization and high frequency of electronic products, can meet the needs of large-scale production of surface mount (SMD) on circuit boards, and promote the gradual increase in the chip rate of components. [0003] Tape casting technology is commonly used at home and abroad to prepare various chip electronic components. Tape casting technology is to mix powder with solvent, dispersant, binder, plasticizer and other components to obtain a uniformly dispersed and stable slurry. , and then make a certain thickness of green film or thin strip on th...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/634C04B35/622H01F37/00H01F41/00
Inventor 李建辉李耀坤刘季超樊应县王志华王智会徐鹏飞
Owner SHENZHEN ZHENHUA FU ELECTRONICS
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