Molded inductor made of water-borne epoxy resin and manufacturing process thereof

A water-based epoxy resin and epoxy resin technology, applied in the field of inductors, to achieve the effect of reducing safety level requirements, production safety risks and personnel health risks

Inactive Publication Date: 2020-02-21
上海太朔材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of these have brought great challenges to the workshop requirements of the granulation process, to the safety of the production process, and to the personnel and the environment on site.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Dissolve 1 kg of ethylene glycol glycidyl ether and 20 g of 2-methylimidazole in 10 kg of water, then add 25 kg of BASF's EQ carbonyl iron powder to the solution, particle size D50=6 microns. Mix in a planetary mixer for 10 minutes. After mixing evenly, vacuumize and planetary stir to 80 degrees while heating, and continue mixing. Take out the mixture until the moisture content in the mixture reaches 2% to 5%, and granulate it on the granulation equipment. After the granulation is completed, dry the obtained granulated powder in a vacuum oven at 70 degrees to completely remove the moisture. Then sieve to collect 200 mesh to 300 mesh powder. Residual powder can be recovered, redissolved in water, and continue to granulate. Finally, mixed powder particles with a resin content of 4% and a carbonyl iron powder content of 96% were obtained.

[0040] Feed the powder particles quantitatively and transport them to the mold cavity of the molding machine prefabricated with coils ...

Embodiment 2

[0043] The aqueous solution of 2000 grams of water-based epoxy resin ME-1 (Shanghai Resin Factory) and 25 grams of 2-methyl 4-ethylimidazole were dissolved in 10 kilograms of water, and then 33 kilograms of alloy iron powder (manufactured by Kawasaki, Japan) were added to the solution. Steel KIP304AS), mixed in a kneader for 30 minutes, after mixing evenly, vacuum, and continue heating and mixing. Take out the mixture until the water content in the mixture reaches 5% to 7%, and granulate it on the granulation equipment. After the granulation is completed, dry the obtained granulated powder in an oven at 80 degrees to remove the remaining moisture. Then sieve to collect the powder of 70 mesh to 150 mesh. The residual powder can be recovered, dissolved in water, and continued to granulate. Finally, the resin content is 3%, the iron powder content is 97%, and the powder particles with a certain mesh number are obtained.

[0044] Feed the powder particles quantitatively, and tra...

Embodiment 3

[0047] 10 kg of E-20 (Baling Petrochemical) and 6 kg of maleic anhydride are added and polymerized under the condition of an initiator, and the polymerization temperature is 120 degrees Celsius. After the reaction is completed, it is hydrolyzed with ammonia water to form a salt. A water-soluble modified epoxy resin is obtained. Feed 1.2 kg of epoxy resin, 120 g of triethanolamine, 5 kg of water, 30 kg of carbonyl iron powder (BASF SQ particle size D50=7 microns), and 10 kg of amorphous alloy (Antai Technology, D50=3 microns) into the mixing In the refining machine, heat, stir and vacuumize under vacuum conditions, the mixing temperature is 70 degrees, and the mixing time is 60 minutes. Until the residual water content in the mixture is 3.5%, the powder particles of 50 mesh to 120 mesh are obtained by extrusion granulation. The modified epoxy resin content in the finally obtained powder particles was 2.5%, and the iron powder content was 97.5%.

[0048] Feed the powder partic...

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Abstract

The invention discloses a molded inductor made of a water-borne epoxy resin and a manufacturing process thereof. According to the technical scheme, the molded inductor made of a water-borne epoxy resin comprises, by mass, 0.5-25% of a composition and 25-99.5% of magnetic metal powder, and the composition comprises epoxy resin capable of being dispersed or dissolved in water, a curing agent and anauxiliary. In the whole process of manufacturing the inductor, an organic solvent is not used, and only water is used as a solvent or a dispersing agent. The safety level requirement of a production workshop is greatly reduced. Almost all solvents used for dissolving resin belong to class A in a traditional process, and therefore, the workshop and the warehouse are required to be class A. The useof flammable, explosive, precursor or toxic organic solvents is avoided, and the production safety risk and the health risk of personnel are greatly reduced. Water is used as a solvent or a dispersingagent and is finally recycled or evaporated into the atmosphere in the whole manufacturing process, so that a zero-emission green and environment-friendly manufacturing process is achieved.

Description

technical field [0001] The invention relates to the technical field of inductors, in particular to a molded inductor made of water-based epoxy resin and a manufacturing process thereof. Background technique [0002] The molding method is a very important method of manufacturing high power inductors, precision inductors and miniature inductors, and sometimes even the only feasible manufacturing method. These precision, small or miniature inductors are essential precision passive components in the fields of displays, mobile phones, 5G, Internet of Things, Internet of Vehicles, artificial intelligence, etc. In the molding process, the magnetic metal powder material can be packaged together, and it can play a series of functions such as bonding, protection, insulation, and rust prevention. It is the inductance packaging material. As these inductors are increasingly used in more application scenarios, the demand for precision molded inductors has also increased dramatically. At...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/04H01F41/02
CPCH01F17/04H01F41/0246H01F2017/048
Inventor 韩坤肖德海
Owner 上海太朔材料技术有限公司
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