CN109148135A - It is a kind of to improve the aligning device and its implementation for inhaling wave magnetic sheet magnetic powder - Google Patents
It is a kind of to improve the aligning device and its implementation for inhaling wave magnetic sheet magnetic powder Download PDFInfo
- Publication number
- CN109148135A CN109148135A CN201810985132.2A CN201810985132A CN109148135A CN 109148135 A CN109148135 A CN 109148135A CN 201810985132 A CN201810985132 A CN 201810985132A CN 109148135 A CN109148135 A CN 109148135A
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- magnetic
- aligning device
- casing
- permanent magnet
- magnetic powder
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- 239000006247 magnetic powder Substances 0.000 title claims abstract description 44
- 238000005266 casting Methods 0.000 claims abstract description 33
- 239000011230 binding agent Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 11
- 229920002799 BoPET Polymers 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 229910000859 α-Fe Inorganic materials 0.000 claims description 5
- 239000007767 bonding agent Substances 0.000 claims description 4
- 230000004323 axial length Effects 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 208000032750 Device leakage Diseases 0.000 abstract description 2
- 238000010010 raising Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 229920005596 polymer binder Polymers 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- H01F41/0253—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 for manufacturing permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Soft Magnetic Materials (AREA)
- Hard Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention discloses a kind of aligning devices for improving suction wave magnetic sheet magnetic powder, including casing and permanent magnet, the permanent magnet includes several cylindrical magnets, and the permanent magnet is located at the inside of casing, described sleeve pipe is non-magnetic component, it is bonded between described sleeve pipe and permanent magnet by non-magnetic binder, the invention also discloses a kind of implementation methods of aligning device for improving suction wave magnetic sheet magnetic powder；Aligning device leakage field proposed by the present invention is smaller, securely and reliably, while not being limited by casting films width, can carry out magnetic field orientating with wide cut casting films, be conducive to improve production efficiency.
Description
Technical field
The invention belongs to absorbing material manufacturing technology fields, and in particular to a kind of to improve the aligning device for inhaling wave magnetic sheet magnetic powder
And its implementation.
Background technique
High magnetic permeability is inhaled wave magnetic sheet material and is mainly prepared by flakey magnetic powder and high polymer binder by casting technique
At, be widely used in consumer electronics product, for absorb and shield component radiation electromagnetic noise.Inhale wave magnetic sheet
Main performance index be magnetic conductivity, magnetic conductivity is higher, and electromagnetic noise suppression effect is better.
The factor for influencing suction wave magnetic sheet permeability mainly includes the intrinsic characteristic of magnetic powder, filling proportion and orientation row
Cloth degree.In order to obtain higher magnetic conductivity, usually select flakey soft magnet performance magnetically soft alloy magnetic powder outstanding as filling
Magnetic powder.Magnetic powder filling proportion is higher, and the magnetic phase amount in magnetic sheet in unit volume is more, and the magnetic conductivity of magnetic sheet is higher.However,
The filling proportion of squamaceous magnetic powder in a binder is unsuitable excessively high, on the one hand since excessively high filling proportion will affect mechanical property
Can, when the high packing ratio of still further aspect, the degree of orientation of flakey magnetic powder is substantially reduced, and magnetic conductivity is caused not rise anti-reduction.Therefore,
When the situation that magnetic powder system is fixed, the degree of orientation that flakey magnetic powder how is improved under high packing ratio is very crucial as one
Problem.Currently, the magnetic powder orientation for inhaling wave magnetic sheet belongs to mechanical orientation, i.e., magnetic powder is realized during slurry passes through scraper
Ordered arrangement, however, this orientation effect is limited, especially in the situation that slurry is more sticky, magnetic powder filling proportion is relatively high
Under, which greatly limits the raisings for inhaling wave magnetic sheet magnetic conductivity.
Summary of the invention
The purpose of the present invention is to provide a kind of aligning devices for improving suction wave magnetic sheet magnetic powder, to solve above-mentioned background technique
The problem of middle proposition.A kind of aligning device improving suction wave magnetic sheet magnetic powder provided by the invention, has and improves magnetic sheet magnetic conductivity
The characteristics of.
Another object of the present invention is to provide a kind of implementation method for improving and inhaling the aligning device of wave magnetic sheet magnetic powder.
To achieve the above object, the invention provides the following technical scheme: a kind of improve the aligning device for inhaling wave magnetic sheet magnetic powder,
Including casing and permanent magnet, the permanent magnet includes several cylindrical magnets, and the permanent magnet is located at the inside of casing, described
Casing is non-magnetic component, is bonded between described sleeve pipe and permanent magnet by non-magnetic binder.
In the present invention further, the cylindrical magnet is Sintered NdFeB magnet or ferrite sintered body magnet.
In the present invention further, casing is stainless steel component or high molecular material component.
In the present invention further, non-magnetic binder is epoxy resin.
In the present invention further, the magnetic field strength of permanent magnet is 200Gs -600Gs.
In the present invention further, the length of casing is 100mm -600mm.
In the present invention further, cover tube wall with a thickness of 10mm -80mm.
In the present invention further, the implementation method of the aligning device of the raising suction wave magnetic sheet magnetic powder, including with
Lower step:
(1), aligning device includes casing and permanent magnet, and permanent magnet is by the identical cylindrical magnet group of one or more diameters
At when number >=2 of cylindrical magnet, the gap between cylindrical magnet is less than 0.01mm, and casing uses un-conducted magnetic material；
(2), it is bonded between permanent magnet and casing by non-magnetic binder；
(3), aligning device is placed in the lower section of PET film, the top of PET film is casting films, and PET film plays support and biography
Send the effect of casting films；
(4), the casting films region magnetic line of force is oriented parallel to the surface of casting films, can promote flakey magnetic powder
Orientation；
(5), the axial length of aligning device is 100mm -200mm longer than the width of casting films, to guarantee to be cast film location
The magnetic line of force be oriented parallel to curtain coating film surface；
(6), the magnetic field strength of permanent magnet is 200Gs -600Gs, and aligning device can be freely rotated, revolving speed and PET film
Feed speed is identical.
In the present invention further, the implementation method of the aligning device of wave magnetic sheet magnetic powder, the circle are inhaled in the raising
Column magnet is Sintered NdFeB magnet or ferrite sintered body magnet；Casing is stainless steel component or high molecular material component；It is non-magnetic
Property binder be epoxy resin；Casting films include bonding agent, solvent and flakey magnetic powder；The length of casing is 100mm-
600mm；Cover tube wall with a thickness of 10mm -80mm.
Compared with prior art, the beneficial effects of the present invention are:
1, aligning device is long shaft-like, and device contacts with PET film contact position for line, herein most with the distance between casting films
Closely, the magnetic field that magnet generates herein is maximum for the orientation effect of magnetic powder in casting films, and this magnetic fields area is smaller, and covers
The biggish aligning device of capping product (as using large area permanent magnet or electromagnet device) is compared, and device provided by the invention is flowing
It is more uniform to prolong the magnetic field generated in film, magnetic powder orientation effect is also more preferable, while also safer；
2, the long shaft-like design of aligning device, can assist PET film to be driven, while can guarantee between device and casting films
Distance is kept constant, and is conducive to the stability for improving alignment magnetic field, and then help to improve the consistency for inhaling wave magnetic sheet product；
3, the device can come by adjusting the size of permanent magnet (including material, the trade mark and size) and non magnetic pipe sleeve
The size for adjusting alignment magnetic field, can according to need free adjustment；
4, aligning device leakage field proposed by the present invention is smaller, securely and reliably, while not being limited by casting films width, can be with
Wide cut casting films carry out magnetic field orientating, are conducive to improve production efficiency.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 be Fig. 1 of the present invention in A-A to schematic cross-sectional view；
Fig. 3 is the operation principle schematic diagram of aligning device of the present invention；
In figure: 1, casing；2, permanent magnet；3, PET film；4, casting films；5, the magnetic line of force.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
Fig. 1-3 is please referred to, the present invention is the following technical schemes are provided: a kind of improve the aligning device for inhaling wave magnetic sheet magnetic powder, packet
Casing 1 and permanent magnet 2 are included, permanent magnet 2 includes several cylindrical magnets, and permanent magnet 2 is located at the inside of casing 1, and casing 1 is not
Conducting magnetic component is bonded between casing 1 and permanent magnet 2 by non-magnetic binder.
Further, cylindrical magnet is Sintered NdFeB magnet or ferrite sintered body magnet.
Further, casing 1 is stainless steel component or high molecular material component.
Further, non-magnetic binder is epoxy resin.
Further, the magnetic field strength of permanent magnet 2 is 200Gs -600Gs.
Further, the length of casing 1 is 100mm -600mm；1 tube wall of casing with a thickness of 10mm -80mm.
Further, of the present invention to improve the implementation method for inhaling the aligning device of wave magnetic sheet magnetic powder, including following step
It is rapid:
(1), aligning device includes casing 1 and permanent magnet 2, and permanent magnet 2 is by the identical sintered NdFeB cylinder of four diameters
Magnet composition, trade mark N30, each cylindrical magnet length are 100mm, diameter 20mm, and the gap between cylindrical magnet is less than
0.008mm, casing 1 use stainless steel material, wall thickness 29mm, length 400mm；
(2), it is bonded between permanent magnet 2 and casing 1 by epoxy resin；
(3), aligning device is placed in the lower section of PET film 3, the top of PET film 3 is casting films 4, and casting films 4 include bonding
Agent, solvent and flakey magnetic powder, PET film 3 play the role of support and transmission casting films 4；
(4), the 4 region magnetic line of force 5 of casting films is oriented parallel to the surface of casting films 4, can promote flakey magnetic powder
Orientation；
(5), the axial length of aligning device is 160mm longer than the width of casting films 4, to guarantee the magnetic force of 4 position of casting films
Line 5 is oriented parallel to 4 surface of casting films；
(6), the magnetic field strength of permanent magnet 2 is 360Gs -425Gs, and aligning device can be freely rotated, revolving speed (linear speed
Degree) it is identical as 3 feed speed of PET film.
Polyurethane, flakey FeSiAl magnetic powder and dimethylbenzene are constituted into mixed slurry, are put into tape casting in casting machine, then
Drying and hot pressing are carried out to casting films, final obtain inhales wave magnetic sheet.After tested, magnetic sheet magnetic conductivity under 2MHz frequency point is 134.
Embodiment 2
This embodiment differs from embodiment 1 in that: aligning device is not added, that is, uses slurry in embodiment 1, in addition to
It is not added other than aligning device, other techniques and parameter are identical.After tested, magnetic sheet magnetic conductivity under 2MHz frequency point is 115；
Show that, by the way that aligning device is added, magnetic sheet magnetic conductivity obviously mentions according to the test result of embodiment 1 and embodiment 2
It rises, in the case where raw material and other experiment conditions are all the same, the promotion of magnetic conductivity is mostly derived from flakey magnetic powder and is bonding
The raising of the degree of orientation in agent.Therefore, flakey magnetic powder can be improved in a binder in magnetic field orientating device provided by the invention
The degree of orientation.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. it is a kind of improve inhale wave magnetic sheet magnetic powder aligning device, it is characterised in that: including casing (1) and permanent magnet (2), it is described forever
Magnet (2) includes several cylindrical magnets, and the permanent magnet (2) is located at the inside of casing (1), and described sleeve pipe (1) is not lead
Magnetic component is bonded between described sleeve pipe (1) and permanent magnet (2) by non-magnetic binder.
2. a kind of aligning device for improving suction wave magnetic sheet magnetic powder according to claim 1, it is characterised in that: the cylinder magnetic
Body is Sintered NdFeB magnet or ferrite sintered body magnet.
3. a kind of the aligning device for inhaling wave magnetic sheet magnetic powder is improved according to claim 2, it is characterised in that: casing (1) is
Stainless steel component or high molecular material component.
4. a kind of aligning device for improving suction wave magnetic sheet magnetic powder according to claim 3, it is characterised in that: non magnetic bonding
Agent is epoxy resin.
5. a kind of aligning device for improving suction wave magnetic sheet magnetic powder according to claim 4, it is characterised in that: permanent magnet (2)
Magnetic field strength be 200Gs -600Gs.
6. a kind of aligning device for improving suction wave magnetic sheet magnetic powder according to claim 5, it is characterised in that: casing (1)
Length is 100mm -600mm.
7. a kind of aligning device for improving suction wave magnetic sheet magnetic powder according to claim 6, it is characterised in that: casing (1) pipe
Wall with a thickness of 10mm -80mm.
8. according to claim 1-7 improve the implementation method for inhaling the aligning device of wave magnetic sheet magnetic powder, feature
It is, comprising the following steps:
(1), aligning device includes casing (1) and permanent magnet (2), and permanent magnet (2) is by the identical cylinder magnetic of one or more diameters
Body composition, when number >=2 of cylindrical magnet, the gap between cylindrical magnet is less than 0.01mm, and casing (1) uses non-magnetic material
Material；
(2), it is bonded between permanent magnet (2) and casing (1) by non-magnetic binder；
(3), aligning device is placed in the lower section of PET film (3), the top of PET film (3) is casting films (4), and PET film (3) plays
The effect of support and transmission casting films (4)；
(4), casting films (4) the region magnetic line of force (5) is oriented parallel to the surface of casting films (4), can promote flakey magnetic
The orientation of powder；
(5), the axial length of aligning device is 100mm -200mm longer than the width of casting films (4), to guarantee casting films (4) position
The magnetic line of force (5) set is oriented parallel to casting films (4) surface；
(6), the magnetic field strength of permanent magnet (2) is 200Gs -600Gs, and aligning device can be freely rotated, revolving speed and PET film
(3) feed speed is identical.
9. according to claim 8 improve the implementation method for inhaling the aligning device of wave magnetic sheet magnetic powder, it is characterised in that: described
Cylindrical magnet is Sintered NdFeB magnet or ferrite sintered body magnet；Casing (1) is stainless steel component or high molecular material component；
Non-magnetic binder is epoxy resin；Casting films (4) include bonding agent, solvent and flakey magnetic powder；The length of casing (1) is
100mm—600mm；Casing (1) tube wall with a thickness of 10mm -80mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810985132.2A CN109148135B (en) | 2018-08-28 | 2018-08-28 | Orientation device for improving magnetic powder of wave-absorbing magnetic sheet and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810985132.2A CN109148135B (en) | 2018-08-28 | 2018-08-28 | Orientation device for improving magnetic powder of wave-absorbing magnetic sheet and implementation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109148135A true CN109148135A (en) | 2019-01-04 |
| CN109148135B CN109148135B (en) | 2020-03-24 |
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| CN201810985132.2A Active CN109148135B (en) | 2018-08-28 | 2018-08-28 | Orientation device for improving magnetic powder of wave-absorbing magnetic sheet and implementation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111724963A (en) * | 2020-06-11 | 2020-09-29 | 中国科学院宁波材料技术与工程研究所 | Tape casting method and device for directional arrangement of magnetic fillers and product |
| CN112635153A (en) * | 2021-03-05 | 2021-04-09 | 广东高鑫信息股份有限公司 | Method and device for casting orientation molding of circular magnetic sheet and product |
| CN113963882A (en) * | 2021-10-19 | 2022-01-21 | 横店集团东磁股份有限公司 | Casting magnetic sheet magnetic powder orientation device and preparation method of wave-absorbing magnetic sheet |
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| Publication number | Publication date |
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| CN109148135B (en) | 2020-03-24 |
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Application publication date: 20190104 Assignee: Jinhua cimeng Intellectual Property Service Co.,Ltd. Assignor: HENGDIAN GROUP DMEGC MAGNETICS Co.,Ltd. Contract record no.: X2023330000883 Denomination of invention: A device for improving the orientation of absorbing magnetic powder and its implementation method Granted publication date: 20200324 License type: Common License Record date: 20231128 |