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Method for preparing ferrite magnetic sheet of wireless charger from waste soft-magnetic material

A wireless charger and ferrite magnetic technology, which is applied in the manufacturing of magnetic materials, magnetic objects, inductors/transformers/magnets, etc., can solve the problems of high cost and uneconomical, and achieve low cost, high product demand and product performance. excellent effect

Inactive Publication Date: 2017-09-29
重庆正峰电子技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cost required by these methods is relatively large, which is not cost-effective for enterprises. Here, this paper proposes a method to recycle and reuse soft ferrite materials (including Ni~Zn, Mn~Zn ferrite, etc.) , prepared as a ferrite magnetic sheet for the receiving end of the wireless charger, this method can be recycled, which can not only avoid direct pollution to the environment, but also create higher value

Method used

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  • Method for preparing ferrite magnetic sheet of wireless charger from waste soft-magnetic material
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  • Method for preparing ferrite magnetic sheet of wireless charger from waste soft-magnetic material

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Embodiment 1

[0020] The present invention provides a method for preparing ferrite magnetic sheets for wireless chargers from soft magnetic waste materials. (1) Ingredients: the reaction materials include waste manganese zinc magnetic cores (MnZnFeO 3 )50%, SiO 2 3.0%, Bi 2 O 3 1.0%, V 2 O 5 1.0%, CuO 2.0%, ZnO 2 3.0%, scrap nickel-zinc magnetic core (NiZnFeO 3 ) 40%; reaction material: ball: water mass ratio of 1:2:1 in a ball milling tank, ball milled in a planetary ball mill at a speed of 500r / min for 4 hours, taken out in an oven at 100°C for drying, and passed through a 60 mesh sieve ; Then pre-fired in a resistance furnace at 900 ℃ for 6 hours, and then ball milled in a ball mill for 4 hours, dried, sieved, take the 60-120 mesh components, made into powder, bagged and sealed for use; (2 ) Casting pulping: all according to mass percentage of deionized water 55%, PVA 35%, PAA 0.5%, PEG 0.5%, PVB 0.5%, latex 0.5%, powder 8.0%, the above materials are mixed and placed in a ball mill tank ...

Embodiment 2

[0022] The present invention provides a method for preparing ferrite magnetic sheets for wireless chargers from soft magnetic waste materials. (1) Ingredients: the reaction materials include waste manganese zinc magnetic cores (MnZnFeO 3 ) 55%, SiO 2 1.0%, Bi 2 O 3 0.5%, V 2 O 5 0.5%, CuO 2%, ZnO 2 1.0%, nickel-zinc scrap core (NiZnFeO 3 ) 40%; reaction material: ball: water mass ratio of 1:2:1 in a ball milling tank, ball milled in a planetary ball mill at a speed of 500r / min for 4 hours, taken out in an oven at 100°C for drying, and passed through a 60 mesh sieve ; Then pre-fired in a resistance furnace at 900 ℃ for 6 hours, and then ball milled in a ball mill for 4 hours, dried, sieved, take the 60-120 mesh components, made into powder, bagged and sealed for use; (2 ) Casting pulping: all according to mass percentage of deionized water 50%, PVA 30, PAA 0.5%, PEG 0.5%, PVB 0.5%, latex 0.5%, powder 18%, the above materials are mixed and placed in a ball mill tank , Ball milli...

Embodiment 3

[0024] The present invention provides a method for preparing ferrite magnetic sheets for wireless chargers from soft magnetic waste materials. (1) Ingredients: the reaction materials include waste manganese zinc magnetic cores (MnZnFeO 3 )50%, SiO 2 1.0%~5.0%, Bi 2 O 3 1.0%, V 2 O 5 1.0%, CuO 5.0%, ZnO 2 3.0%, scrap nickel-zinc magnetic core (NiZnFeO 3 ) 35%; reaction material: ball: water mass ratio of 1:2:1 in a ball mill tank, ball milled in a planetary ball mill at a speed of 500r / min for 4 hours, taken out in an oven at 100°C for drying, and passed through a 60 mesh sieve ; Then pre-fired in a resistance furnace at 900 ℃ for 6 hours, and then ball milled in a ball mill for 4 hours, dried, sieved, take the 60-120 mesh components, made into powder, bagged and sealed for use; (2 ) Casting pulping: all according to mass percentage of deionized water 50%, PVA 30, PAA 0.5%, PEG 0.5%, PVB 0.5%, latex 0.5%, powder 18%, the above materials are mixed and placed in a ball mill tank ...

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Abstract

The invention specifically relates to a method for preparing a ferrite magnetic sheet of a wireless charger from a waste soft-magnetic material, belonging to the field of electromagnetic materials. The method comprises the following steps: (1) batching: subjecting reaction materials including (mass percentage) waste manganese-zinc magnetic cores (MnZnFeO3), waste nickel-zinc magnetic cores (NiZnFeO3), SiO2, Bi2O3, V2O5, CuO and ZnO2 to ball milling with water and then to sieving; (2) tape casting and slurrying: subjectintg powder, deionized water, PVA, PAA, PEG, PVB and latex to ball milling with a roller-type ball mill; (3) tape casting and molding: preparing a green body from tape-cast slurry on a tape casting machine; (4) adhesive discharging: subjecting the molded green body to adhesive discharging with an electric resistance furnace; (5) sintering: sintering the green body having undergone adhesive discharging in an elevator furnace in a reducing atmosphere; (6) film pasting; and (7) porcelain cracking. The method provided by the invention has the advantages of low cost, conservation of energy, environmental protection and excellent product performance.

Description

Technical field [0001] The invention relates to the field of electromagnetic materials, in particular to a method for preparing ferrite magnetic sheets for wireless chargers from soft magnetic waste materials. Background technique [0002] With the rapid development of modern science and technology and the improvement of people’s living standards, more and more applications of electronic products are used in our lives, but with that comes the generation of e-waste. The composition of e-waste is complex. More than half of the materials are harmful to the human body, and some are even highly toxic. For example, the soft ferrite material contains heavy metal elements such as Ni, Mn, Zn, Cu, and Bi. When e-waste is landfilled or incinerated, the heavy metals in it seep into the soil and enter rivers and groundwater, which will cause pollution of local soil and groundwater, directly or indirectly causing damage to local residents and other organisms, and damage the natural environmen...

Claims

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Application Information

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IPC IPC(8): C04B35/26H01F41/02H01F1/34
CPCC04B35/265C04B2235/3239C04B2235/3274C04B2235/3281C04B2235/3284C04B2235/3298C04B2235/5427C04B2235/5463C04B2235/6025C04B2235/606C04B2235/656C04B2235/6562C04B2235/6567C04B2235/658H01F1/344H01F41/0266
Inventor 张戈
Owner 重庆正峰电子技术有限公司
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