CN109545492A - A kind of composition being used to prepare flexible magnetic sheet and preparation method - Google Patents
A kind of composition being used to prepare flexible magnetic sheet and preparation method Download PDFInfo
- Publication number
- CN109545492A CN109545492A CN201811248825.XA CN201811248825A CN109545492A CN 109545492 A CN109545492 A CN 109545492A CN 201811248825 A CN201811248825 A CN 201811248825A CN 109545492 A CN109545492 A CN 109545492A
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- China
- Prior art keywords
- binder
- composition
- magnaglo
- magnetic sheet
- solvent
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/22—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
Abstract
The invention discloses a kind of composition for being used to prepare flexible magnetic sheet and preparation method, the composition includes the Magnaglo of 70~90wt.%, the binder of 25~5wt.%, 0~5wt.% solvent；Magnaglo include one of iron, carbonyl iron, cobalt, nickel, molybdenum, manganese, FeSi, FeSiAl, FeSiB, FeCuNbSiB these materials or it is a variety of made of mixture；Binder includes one or more of nylon, EVA, LDPE, PEG, PVA, PIB, palm wax, paraffin, stearic acid, DPB mixture；Selected solvent is one of water, alcohol, aromatic hydrocarbon or acetone or a variety of, and selected solvent can avoid the oxidation of Magnaglo in powder coated with uniform binder.Preparation process of the present invention has broad spectrum activity, can effectively avoid oxidation of the Magnaglo in kneading process；It selects the binder of low melting point high fusion index to help to increase the mobility for mediating material, helps to improve Magnaglo accounting and flexible sheets dimensional accuracy.
Description
Technical field
The invention belongs to technical field of magnetic materials more particularly to a kind of composition for being used to prepare flexible magnetic sheet and preparations
Method.
Background technique
In recent years, with the rapid development of electronic technology, magnetic material is gradually applied to electromagnetic shielding, microwave absorption, nothing
The fields such as line charge electricity, and flexible magnetic sheet undoubtedly most application market, it have it is slim, flexible, convenient for the characteristics such as cutting.It is soft at present
The manufacture craft of property piece has the tape casting, rolling process method, injection molding etc..
If CN107216136A prepares wireless charger ferrite magnetic sheet using the tape casting, the shortcomings that technique, is to need
Dumping sintering, can not use the flexible sheets for being prepared in non-crystalline material；It according to the invention and is not sintered, due to used binder
The lower toughness for making the ratio that cannot improve Magnaglo as far as possible and improving flexible sheets simultaneously of melt index, causes to manufacture
The low efficiency of thin-wall product cannot play material property to greatest extent.
If CN104715880A prepares flexible magnetic sheet using rolling process, the binder used is the macromolecule of low melt index
Polymer, the binder of low melt index can reduce calendering efficiency, product surface easily it is dry and cracked, toughness of products is low.Carbonyl iron dust and
Amorphous powder is easily oxidized in high temperature kneading process and influences properties of product, and conventional kneading process can not completely cut off air to keep away
Exempt to aoxidize, rolling process is made to have certain limitation.
Summary of the invention
To solve above-mentioned technical problem of the existing technology, the present invention provides a kind of combination for being used to prepare flexible magnetic sheet
Object, the composition include the Magnaglo of 70~90wt.%, the binder of 5~25wt.%, 0~5wt.% solvent.
Preferably, Magnaglo includes iron, carbonyl iron, cobalt, nickel, molybdenum, manganese, FeSi, FeSiAl, FeSiB, FeCuNbSiB
One of these materials or a variety of manufactured mixtures.
Preferably, binder includes main binding agent (nylon, EVA, LDPE, PEG, PVA), secondary binder (PIB, palm fibre
Palmitic acid wax, paraffin, stearic acid, DPB) one or more of mixture, add 0~5wt.% molten according to selected binder
Agent, the solvent are one of water, alcohol, aromatic hydrocarbon or acetone or a variety of.
The present invention discloses a kind of preparation methods of composition for being used to prepare wireless charging magnetic sheet, including following step
It is rapid:
(1) mediate: powder, binder, solvent are mediated 0.5~1 hour in kneader；
(2) roll, dry, punch forming；
It mediates and is mediated using the kneader or mixer of inert gas shielding, excessive material is avoided to aoxidize.
Preparation process of the present invention has broad spectrum activity, can effectively avoid oxidation of the magnetic material in kneading process；
It selects the binder of high fusion index to help to increase the mobility for mediating material, helps to improve Magnaglo accounting
And flexible sheets dimensional accuracy.
The present invention is used to prepare the composition and preparation method of flexible magnetic sheet, has high finished product rate, high-precision, has excellent performance
The advantages that.
Specific embodiment
Embodiment 1
The invention discloses a kind of composition for being used to prepare wireless charging magnetic sheet and preparation methods；Its composition includes
The Magnaglo of 75wt.%, the binder of 20wt.%, 5wt.% solvent prepare the combination the invention further relates to a kind of
The method of object and a kind of method for preparing the mechanograph made of the composition；(1) mediate: powder, binder, solvent exist
It is mediated 0.5 hour in kneader；(2) roll, dry, punch forming.This programme has high finished product rate, high-precision, has excellent performance
The advantages that.
Wherein Magnaglo is iron, carbonyl iron, cobalt, nickel, molybdenum, manganese, FeSi, FeSiAl, FeSiB, FeCuNbSiB these materials
One of material or a variety of manufactured mixtures.
Wherein binder includes main binding agent (nylon, EVA, LDPE, PEG, PVA), secondary binder (PIB, palm
Wax, paraffin, stearic acid, DPB) one or more of mixture, 0~5wt.% solvent is added according to selected binder
(water, alcohol, aromatic hydrocarbon or acetone).
It mediates: being mediated using the kneader or mixer of inert gas shielding, excessive material is avoided to aoxidize.
As it can be seen from table 1 the kneading mode of inert gas shielding can effectively promote material property, from avoiding Magnaglo
Oxidation.
Embodiment 2
The invention discloses a kind of composition for being used to prepare wireless charging magnetic sheet and preparation methods；Its composition includes
The Magnaglo of 80wt.%, the binder of 15wt.%, 5wt.% solvent prepare the combination the invention further relates to a kind of
The method of object and a kind of method for preparing the mechanograph made of the composition；(1) mediate: powder, binder are being mediated
It is mediated 0.7 hour in machine；(2) roll, dry, punch forming.
Wherein Magnaglo include iron, carbonyl iron, cobalt, nickel, molybdenum, manganese, FeSi, FeSiAl, FeSiB, FeCuNbSiB these
One of material or a variety of manufactured mixtures.
Wherein binder includes main binding agent (nylon, EVA, LDPE, PEG, PVA), secondary binder (PIB, palm
Wax, paraffin, stearic acid, DPB) one or more of mixture, 0~5wt.% solvent is added according to selected binder
(water, alcohol, aromatic hydrocarbon or acetone).
It mediates: being mediated using the kneader or mixer of inert gas shielding.
From table 2 it can be seen that selecting the binder of high fusion index that can effectively improve Magnaglo accounting, increase flexible sheets
Flexility.
Embodiment 3
The invention discloses a kind of composition for being used to prepare flexible magnetic sheet, the composition includes the magnetism of 70wt.%
Powder, the binder of 25wt.%, 5wt.% solvent.The invention further relates to a kind of method for preparing the composition and
A method of preparing the mechanograph made of the composition；(1) mediate: it is small that powder, binder mediate 1 in kneader
When；(2) roll, dry, punch forming.
Wherein Magnaglo include iron, carbonyl iron, cobalt, nickel, molybdenum, manganese, FeSi, FeSiAl, FeSiB, FeCuNbSiB these
One of material or a variety of manufactured mixtures.
Binder includes main binding agent (nylon, EVA, LDPE, PEG, PVA), secondary binder (PIB, palm wax, stone
Wax, stearic acid, DPB) one or more of mixture, 0~5wt.% solvent is added according to selected binder, it is described molten
Agent is one of water, alcohol, aromatic hydrocarbon or acetone or a variety of.
Embodiment 4
The invention discloses a kind of composition for being used to prepare wireless charging magnetic sheet and preparation methods；Its composition includes
The Magnaglo of 90wt.%, the binder of 7.5wt.%, 2.5wt.% solvent, the invention further relates to described in a kind of prepare
The method of composition and a kind of method for preparing the mechanograph made of the composition；(1) mediate: powder, binder exist
It is mediated 0.8 hour in kneader；(2) roll, dry, punch forming.
Wherein Magnaglo include iron, carbonyl iron, cobalt, nickel, molybdenum, manganese, FeSi, FeSiAl, FeSiB, FeCuNbSiB these
One of material or a variety of manufactured mixtures.
Wherein binder includes main binding agent (nylon, EVA, LDPE, PEG, PVA), secondary binder (PIB, palm
Wax, paraffin, stearic acid, DPB) one or more of mixture, 0~5wt.% solvent is added according to selected binder
(water, alcohol, aromatic hydrocarbon or acetone).
It mediates: being mediated using the kneader or mixer of inert gas shielding.
From table 3 it can be seen that the loading of Magnaglo can be effectively increased in currently preferred range, and not shadow
Ring material property.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (4)
1. a kind of composition for being used to prepare flexible magnetic sheet, it is characterised in that: the composition includes the magnetism of 70~90wt.%
Powder, the binder of 5~25wt.%, 0~5wt.% solvent.
2. a kind of composition for being used to prepare flexible magnetic sheet as described in claim 1, it is characterised in that: Magnaglo includes
One of iron, carbonyl iron, cobalt, nickel, molybdenum, manganese, FeSi, FeSiAl, FeSiB, FeCuNbSiB these materials or it is a variety of made of
Mixture.
3. a kind of composition for being used to prepare flexible magnetic sheet as described in claim 1, it is characterised in that: binder includes Buddhist nun
One or more of dragon, EVA, LDPE, PEG, PVA, PIB, palm wax, paraffin, stearic acid, DPB mixture, according to selected
Binder adds 0~5wt.% solvent, and the solvent is one of water, alcohol, aromatic hydrocarbon or acetone or a variety of.
4. a kind of preparation method for the composition for being used to prepare wireless charging magnetic sheet, it is characterised in that: the following steps are included:
(1) mediate: powder, binder, solvent are mediated 0.5~1 hour in kneader；
(2) roll, dry, punch forming；
It is mediated using the kneader or mixer of inert gas shielding, excessive material is avoided to aoxidize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811248825.XA CN109545492A (en) | 2018-10-25 | 2018-10-25 | A kind of composition being used to prepare flexible magnetic sheet and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811248825.XA CN109545492A (en) | 2018-10-25 | 2018-10-25 | A kind of composition being used to prepare flexible magnetic sheet and preparation method |
Publications (1)
| Publication Number | Publication Date |
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| CN109545492A true CN109545492A (en) | 2019-03-29 |
Family
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| CN201811248825.XA Pending CN109545492A (en) | 2018-10-25 | 2018-10-25 | A kind of composition being used to prepare flexible magnetic sheet and preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111431239A (en) * | 2020-04-20 | 2020-07-17 | 蓝沛光线（上海）电子科技有限公司 | Wireless charging module and preparation method thereof |
| CN112563011A (en) * | 2020-11-10 | 2021-03-26 | 广州金南磁性材料有限公司 | Flexible neodymium-iron-boron magnet and preparation method and application thereof |
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| JP2000243615A (en) * | 1998-12-17 | 2000-09-08 | Tokin Corp | Composite magnetic body and manufacture thereof |
| CN101689418A (en) * | 2007-06-21 | 2010-03-31 | 索尼化学&信息部件株式会社 | Magnetic sheet, process for producing the same, antenna, and portable communications equipment |
| CN102610353A (en) * | 2011-01-24 | 2012-07-25 | 北京中科三环高技术股份有限公司 | Preparation method of anisotropic flexible magnet with high degree of orientation and high performance |
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| CN105714174A (en) * | 2016-04-15 | 2016-06-29 | 厦门理工学院 | Pure iron-series magnetically soft alloy prepared by using powder injection molding process and method |
| CN106803451A (en) * | 2015-11-26 | 2017-06-06 | 比亚迪股份有限公司 | Absorbing material and suction ripple substrate and suction wave plate and their preparation method and electronic equipment |
| CN106915822A (en) * | 2017-02-21 | 2017-07-04 | 济南大学 | A kind of composite magnetic particle based on aluminium nickel cobalt and preparation method thereof |
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2018
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| US5234614A (en) * | 1990-06-14 | 1993-08-10 | Matsushita Electric Industrial Co., Ltd. | Method for producing magnetic coating composition and magnetic recording medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111431239A (en) * | 2020-04-20 | 2020-07-17 | 蓝沛光线（上海）电子科技有限公司 | Wireless charging module and preparation method thereof |
| CN112563011A (en) * | 2020-11-10 | 2021-03-26 | 广州金南磁性材料有限公司 | Flexible neodymium-iron-boron magnet and preparation method and application thereof |
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