CN104231708B - Soft magnetism coating used under multipole magnetostatic field and preparation method thereof - Google Patents
Soft magnetism coating used under multipole magnetostatic field and preparation method thereof Download PDFInfo
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- CN104231708B CN104231708B CN201310248293.0A CN201310248293A CN104231708B CN 104231708 B CN104231708 B CN 104231708B CN 201310248293 A CN201310248293 A CN 201310248293A CN 104231708 B CN104231708 B CN 104231708B
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- 238000000576 coating method Methods 0.000 title claims abstract description 132
- 239000011248 coating agent Substances 0.000 title claims abstract description 121
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 230000005405 multipole Effects 0.000 title claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 43
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 18
- 239000003085 diluting agent Substances 0.000 claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 230000005291 magnetic effect Effects 0.000 claims description 37
- 239000000839 emulsion Substances 0.000 claims description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
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- 229920001577 copolymer Polymers 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 7
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- 229910052742 iron Inorganic materials 0.000 claims description 6
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- 238000003756 stirring Methods 0.000 claims description 6
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- 239000010941 cobalt Substances 0.000 claims description 4
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- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 3
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- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 claims 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims 1
- ONJMNXFNTYIEEA-UHFFFAOYSA-N benzene ethene Chemical compound C1=CC=CC=C1.C=C.C=C.C=C ONJMNXFNTYIEEA-UHFFFAOYSA-N 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 150000002170 ethers Chemical class 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
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- 230000005307 ferromagnetism Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- XEUCQOBUZPQUMQ-UHFFFAOYSA-N Glycolone Chemical compound COC1=C(CC=C(C)C)C(=O)NC2=C1C=CC=C2OC XEUCQOBUZPQUMQ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
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- 239000007767 bonding agent Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- MOTZDAYCYVMXPC-UHFFFAOYSA-N dodecyl hydrogen sulfate Chemical compound CCCCCCCCCCCCOS(O)(=O)=O MOTZDAYCYVMXPC-UHFFFAOYSA-N 0.000 description 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical compound C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
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- 239000004584 polyacrylic acid Substances 0.000 description 1
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- 239000003755 preservative agent Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/23—Magnetisable or magnetic paints or lacquers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
- C09D7/67—Particle size smaller than 100 nm
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Paints Or Removers (AREA)
- Soft Magnetic Materials (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of soft magnetism coating, which contains sheet soft magnetism powder, preferably comprise the auxiliary agent of sheet soft magnetism powder, the binder of 9 25wt%, the diluent of 5 15wt% and 1 5.5wt% of 65 85wt%, wherein, 300 μm of a diameter of 10nm in sheet soft magnet powder long axis of body direction, preferably 10 μm 200 μm, radius-thickness ratio is 1 300, preferably 5 100.There is the permanent-magnet material of multipole magnetostatic field when using cooperatively with soft magnetism coating of the present invention, there is between permanent-magnet material and coating preferable suction.Present invention is mainly utilized as coating for wall surface, also can be coated on the base materials such as various print media or wallpaper, high performance soft-magnetic composite material is made.Additionally, the invention also discloses a kind of preparation method of soft magnetism coating and the soft-magnetic composite material using soft magnetism coating of the present invention.
Description
Technical field
A kind of the invention belongs to paint field, it is more particularly related to soft magnetism used under multipole magnetostatic field
Coating and preparation method thereof.
Background technology
Coating is widely used in daily life, can play protection and decorative effect.Progress with science and technology
And development, also engendered some multifunctional coatings in recent years, such as have electric insulation functions, anti-pollution function, decrease of noise functions, every
Hot merit energy, conducting function and magnetic function coating.
Some the permanent magnetism coating for such as occurring on market in recent years, this coating can be coated in some bases through techniques such as brushings
Form coating after material surface after drying, by magnetizing to the paint coatings, can cause coating that there is magnetic, can inhale
The metallic article such as attached iron or nickel.
For example, United States Patent (USP) US5,843,329 disclose one kind " magnetic coating additive (MAGNETIC PAINTOR
INK ADDITIVE) " disclose a kind of ferromagnetism coating, with the addition of in coating particle diameter be 0.01-297 μm ferromagnetic particle it
Afterwards so that coating has permanent magnetism or soft magnetic characteristic.Chinese invention patent application CN200910039024.7 discloses a kind of " magnetically attractive
Property coating and preparation method thereof ", coating is by the ferromagnetism of the emulsion of 20-70%, the non-magnetite powder of 10-80% and non-iron filings powder
The water composition of powder, the preservative of 0.1-10% and surplus, various materials are mixed according to a certain percentage.Above-mentioned two specially
Profit all make use of the permanent magnetism or soft magnetic characteristic of material itself, but powder not on significantly affecting on soft magnetic materials performance well
Pattern is made description and is applied, and the coating property that makes is poor, need to can be only achieved preferable using effect after repeatedly coating, and uses
This coating application excessive cycle, takes time and effort.
In addition to coating article itself, also magnetic coating can be coated on some base materials, such as wallpaper and printing consumables,
Make diversified soft-magnetic composite material.Chinese utility model patent such as applicant application
CN200820044399.3 " sheet material of magnetic white board " discloses the blank that makes after a kind of magnetic coating is coated on erasable film
Film product, Chinese utility model patent CN200820176937.4 " a kind of magnetic paper product for directly printing " disclose a kind of magnetic
The printable magnetic composite that property coatings are made after printing consumables.Additionally, magnetic coating or soft magnetism coating are also
Can be coated on to make above wallpaper material and become permanent magnetism wallpaper or soft magnetism wallpaper.
At present, soft magnetism coating of the prior art typically all contains spherical or other irregularly shaped and particle diameter soft magnetism materials
Material particle, after soft magnetism coatings are on the metope or other base materials, coated side has the characteristic of soft magnetic materials, can be by permanent magnetism
Property product absorption.It is therefore convenient to have permanent magnetism special in common refrigerator paste in life, magnetic hanger, traffic allowance, poster etc.
Property product adsorb in coat side, convenient for people's lives.The many plane permanent magnetism products with multipole magnetization of this soft magnetism coating
Product are used cooperatively, such as the permanent magnet product such as magnetic rubber sheet material, permanent magnetism coated film and other decorative material for wall surface.
But, soft magnetism coating of the prior art has serious defect in use：As existing soft magnetism is applied
The performance of material is relatively low, and poly- magnetic is limited in one's ability, in order that obtaining sufficiently large suction between soft magnetic materials coating and magnetic product, needs
Want the coating of soft magnetism coating sufficiently thick could meet requirement, it is therefore desirable to repeatedly to paint soft magnetism coating to thicken coating.Such as powder
Whitewash a wall body, after powder is brushed one times, need to wait one day the even coating such as longer time could brush next time again after drying, so
One, long construction period is not only result in, efficiency of the practice is low, and causes coating greatly to waste, not economic and environment-friendly enough.
When soft magnetism coatings are used for making soft-magnetic composite material on some base materials, typically require that coating gets over Bao Yuehao,
Therefore, under relatively thin coating conditions, it is a technical barrier to produce larger suction between coating to be met and permanent magnet product.
In view of this, it is necessory to provide a kind of new high-performance soft magnetism coating and preparation method thereof.
Content of the invention
It is an object of the invention to：Overcome the shortcoming and defect of soft magnetism coating in prior art, there is provided one kind is used for preparing
When using cooperatively with multipole permanent-magnet material, magnetostatic field concentration class is high, have preferable suction soft magnetism coating high-performance soft magnetism
Coating and preparation method thereof.
In order to realize foregoing invention purpose, the invention provides a kind of soft magnetism coating, which contains sheet soft magnetism powder, bonding
Agent, diluent and auxiliary agent, the optimization formula of soft magnetism coating is the sheet soft magnetism powder of 65-85wt%, the binder of 9-25wt%, 5-
The auxiliary agent of the diluent and 1-5.5wt% of 15wt%.If the content of sheet soft magnetism powder is too low, easily cause between soft magnetism powder because
Gap produces greatly leakage field phenomenon very much, causes the suction between soft magnetism paint coatings and magnetic product too low；If sheet soft magnetism
The too high levels of powder, then easily affect the physical property of coating, and after causing soft magnetism paint coatings to dry, dry linting or brittleness are excessive.
One kind as soft magnetism coating of the present invention is improved, a diameter of 10nm-300 in the sheet soft magnet powder long axis of body direction
μm, preferably 10 μm -200 μm, radius-thickness ratio is 1-300, preferably 5-100.
One kind as soft magnetism coating of the present invention is improved, and the sheet soft magnetism powder is flake iron powder or sheet iron-based, cobalt
One or more in base, Ni based soft magnetic powder, sheet soft magnetic ferrite powder.
One kind as soft magnetism coating of the present invention is improved, the binder be polyvinyl acetate and its polymer emulsion,
Acrylate copolymer and its copolymer emulsion, polyvinyl alcohol and its derivative, vinyl halide polymers latex, styrene polymer
And its copolymer emulsion, diene polymer and its copolymer emulsion, based on the polymer emulsion of fat hydrocarbon, polyvinyl pyrrole
Alkanone and its polymer, epoxy resin and its copolymer emulsion, amino resins and its copolymer emulsion, phenolic resin and its copolymerization
Thing emulsion, polyamide emulsion, alkide resin emulsion, polyaminoester emulsion, silicone resin emulsion, Sodium Polyacrylate, cellulose ether,
One or more in starch, animal glue, natural gum.
As soft magnetism coating of the present invention one kind improve, the diluent be alcohols solvent, ether solvent, esters solvent,
One or more in varsol, ketones solvent, water.
One kind as soft magnetism coating of the present invention is improved, and the auxiliary agent contains levelling agent, defoamer and dispersant.
One kind as soft magnetism coating of the present invention is improved, and the levelling agent is polyacrylic levelling agent, polysiloxane-based
One or more in levelling agent.
As soft magnetism coating of the present invention one kind improve, the defoamer be silica, ethanol, ethylene glycol monobutyl ether,
One or more in tributyl phosphate, siloxane polymer, polyethers, natural oil, mineral oil.
One kind as soft magnetism coating of the present invention is improved, and the dispersant is carboxylate, sulfonate, phosphate, alkane hydroxyl
One or more in amine salt, polyacrylate, polyurethane, block copolymer.
Additionally, present invention also offers a kind of soft-magnetic composite material, which includes that base material and the soft magnetism being distributed on base material are applied
Material, wherein, the soft magnetism coating is aforementioned soft magnetism coating, and sheet soft magnetism powder, can be through overstress or magnetic field in coating process
Orientation, makes sheet soft magnetism powder sagittal plane in the coating along parallel with substrate surface direction is uniform, consistent, parallel arrangement.
In order to realize foregoing invention purpose, present invention also offers a kind of preparation method of soft magnetism coating, which includes following
Step：
Sheet soft magnetism powder is made, is processed using ball milling or lapping mode, ball-grinding machine can adopt tumbling ball mill, stirring
Ball mill, planetary ball mill and sand mill；
Sheet soft magnetism powder, binder, diluent and auxiliary agent are put into formation mixture in dispersion machine；And
Using the mixture of dispersion machine uniform stirring sheet soft magnetism powder, binder, diluent and auxiliary agent, obtain soft magnetism and apply
Material, dispersing speed are 500-1500 rev/min, and mixing time is more than 20 minutes.
The a kind of of preparation method as soft magnetism coating of the present invention improves, the diameter in the sheet soft magnet powder long axis of body direction
For 10nm-300 μm, preferably 10 μm -200 μm, radius-thickness ratio 1-300, preferably 5-100.
The a kind of of preparation method as soft magnetism coating of the present invention improves, and the sheet soft magnetism powder is flake iron powder or piece
One or more in shape iron-based, cobalt-based, Ni based soft magnetic powder, sheet soft magnetic ferrite powder.
The a kind of of preparation method as soft magnetism coating of the present invention improves, and preferably contains 65-85wt%'s in the soft magnetism coating
The auxiliary agent of sheet soft magnetism powder, the binder of 9-25wt%, the diluent of 5-15wt% and 1-5.5wt%.
When soft magnetism coating is used, by soft magnetism coating being coated in the plane of metope or other base materials, shape after solidification
Into soft magnetism paint coatings, soft magnetism coating and permanent-magnet material attract each other generation suction.Soft magnetism powder in existing soft magnetism coating is
Spherical powder or irregular powder, when soft magnetism coating is coated in substrate plane, the magnetic conductivity in all directions is essentially identical.As schemed
Shown in 1, the powder in coating 10 ' is spherical powder, when the permanent-magnet material 20 ' with multipole magnetization is fitted, the X parallel with binding face
Magnetic conductivity on direction and the Y-direction vertical with plane of fitting is essentially identical, the magnetic in the multipole magnetostatic field that permanent-magnet material is produced
After the line of force 30 ' enters soft magnetism coating, it is possible to penetrate coating, cause leakage field phenomenon.
Sheet soft magnetism powder of the soft magnetism powder in soft magnetism coating of the present invention using a diameter of 10-200 μm of long axis direction, piece
Shape soft magnetism powder and binder, diluent and auxiliary agent mix by a certain percentage makes coating, and when flake powder is erect, center of gravity is high, is in
Unstable state, during tiling, center of gravity is low, is energy stabilization state, and under nature or during stress, flaky powder tends to tiling point
Cloth, after therefore soft magnetism coating of the present invention forms coating on the base material, flaky powder sagittal plane in the coating along and substrate surface
Parallel direction is uniform, parallel arrangement..
Air gap closed magnetic circuit suction formula is opened according to magnetostatic field
Formula 1.1
In above-mentioned formula 1.1, F is suction, magnetic flux of the B for unit area, μ0For air permeability, A is magnetic circuit section
Product.
, when using cooperatively with specific permanent-magnet material, the magnetic flux in binding face is bigger for soft magnetism coating, coating and permanent magnetism material
Suction between material is bigger.The present invention soft magnetism coatings after substrate surface, with the permanent-magnet material with multipole magnetostatic field
During 20 laminating, its magnetic line of force is as shown in Figure 2.As flake powder is arranged parallel to binding face X-direction, when the magnetic line of force 30 runs into sheet
During powder, due to flaky powder 10 in the magnetic conductivity parallel to binding face X-direction more than the magnetic conductance in binding face Y-direction
Rate, therefore, the magnetic line of force that more N poles send can be advanced without penetrating coating, thus in soft magnetism coating and permanent magnetism material along Y-direction
More closure flux loops can be formed between material, bigger by the magnetic flux of binding face, thus produce bigger suction.
Relative to prior art, the present invention has advantages below：1) under multipole magnetostatic field, soft magnetism coating and permanent-magnet material
Between more existing soft magnetism coating have higher suction；2) as thinner coating can just reach identical effect, it is not necessary to many
Layer is painted, thus construction period is shorter, in hgher efficiency；3) can be coated on the base materials such as various print media or wallpaper, make
High performance soft-magnetic composite material；4) identical function can be reached with relatively thin soft magnetism paint coatings, more economical material benefit；5）Adopt
With water paste, more environmentally-friendly.
Description of the drawings
Below in conjunction with the drawings and specific embodiments, soft magnetism coating of the present invention and preparation method thereof is described in detail,
In accompanying drawing：
Fig. 1 is that existing soft magnetism coating is coated on base material the schematic diagram used cooperatively with permanent-magnet material.
Fig. 2 is that soft magnetism coating of the present invention is coated on base material the schematic diagram used cooperatively with permanent-magnet material.
Specific embodiment
In order that the goal of the invention of the present invention, technical scheme and Advantageous Effects become apparent from, below in conjunction with accompanying drawing and
Embodiment, the present invention is described in more detail.It should be appreciated that the embodiment described in this specification is merely to explain
The present invention, is not intended to limit the present invention.
Embodiment 1
The formula of soft magnetism coating is：FeSi of the soft magnetism powder for 72.5wt%6.5, acrylic emulsion of the binder for 13wt%,
Water of the diluent for 11.5wt%, ammonium salt of the auxiliary agent for the polyacrylic acid, the mineral oil of 0.5wt% and 0.5wt% of 2wt%.
The preparation method of soft magnetism coating is：With tumbling ball mill to FeSi6.5Powder carries out flaky process, and ratio of grinding media to material is
5:1, by FeSi6.5Wear into long axis direction a diameter of 20 μm -50 μm, sheet FeSi of the radius-thickness ratio for 5-206.5Powder；By sheet
FeSi6.5Powder is mixed in container with binder, diluent and auxiliary agent, is obtained soft after being dispersed through 750 turns/min of machine stirrings 30 minutes
Magnetic coating.
The soft magnetism coating of embodiment 1 is tested as follows：
The high-performance soft magnetism coating that embodiment 1 is obtained is coated on the thick KT plates of 5mm, and coating layer thickness is 0.15mm, is applied
Wait 3 hours after good, coating is fully cured drying.
Using side's property rubber magnets such as one piece of 100mm x100mm x0.15mm, permanent-magnet material magnet charger is with 1.5mm magnetic
Square carries out one side multipole magnetization, and after magnetizing, the table magnetic of rubber magnet is 100Gs.
Rubber magnet after above-mentioned magnetizing is fitted in and is coated with the KT plates of 1 soft magnetism coating of embodiment, using tensiometer
Its vertical tension is detected, the vertical tension data for drawing are 2.4g/cm2.
Comparative example 1
The soft magnetism powder FeSi adopted in comparative example 16.5Form be spherical powder, particle diameter is 20-50 μm, remaining and enforcement
Example 1 is identical.
Experiment similarly to Example 1 is carried out to comparative example 1, and the vertical tension data for drawing are 1.8g/cm2.Embodiment 2
The formula of soft magnetism coating is：Iron powder of the soft magnetism powder for 80.5wt%, polyvinyl alcohol contracting fourth of the binder for 10wt%
Aldehyde, ethanol of the diluent for 8wt%, dodecyl sulphate of the auxiliary agent for the polyurethane, the silicone oil of 0.5wt% and 0.2wt% of 0.8wt%
Sodium.
The preparation method of soft magnetism coating is：Iron powder is ground to form long axis direction with grinder a diameter of 50-80 μm, footpath are thick
Flake iron powder body than 20-35；Flake iron powder body and binder, diluent and auxiliary agent are mixed in container, machine 500 is dispersed through
Turn/min stirring obtain within 50 minutes 2 soft magnetism coating of embodiment.
Experiment same as Example 1 is carried out to 2 soft magnetism coating of embodiment, the vertical tension data for measuring are 2.6g/
cm2.
Comparative example 2
For irregularly shaped, particle diameter is 50-80 μm to the form of the soft magnetism powder iron powder adopted in comparative example 2, remaining and reality
Apply example 2 identical.
Experiment same as Example 1 is carried out to 2 soft magnetism coating of comparative example, the vertical tension data for measuring are 1.8g/
cm2.
Embodiment 3
The formula of soft magnetism coating is：The ethene-vinyl acetate that soft magnetism powder is the nickel powder of 67wt%, binder is 15wt% is altogether
Polymers, diluent are the ethanol and the water of 6wt% of 8wt%, auxiliary agent is the acrylic acid of 2wt%, the polyether-type defoamer of 0.7wt% and
The polyacrylamide of 1.3wt%.
The preparation method of soft magnetism coating is：A diameter of 80-100 μ that nickel powder body is worn into long axis direction with agitating ball mill
M, Nickel Powder body of the radius-thickness ratio for 30-80；Nickel Powder body and binder, diluent and auxiliary agent are mixed in container, through dividing
1200 turns/min of scattered machine stirrings obtain 3 soft magnetism coating of embodiment for 20 minutes.
Experiment same as Example 1 is carried out to 3 soft magnetism coating of embodiment, the vertical tension data for measuring are 2.3g/
cm2.
Comparative example 3
For irregularly shaped, particle diameter is 80-100 μm to the form of the soft magnetism powder nickel powder adopted in comparative example 3, remaining and reality
Apply example 3 identical.
Experiment same as Example 1 is carried out to 3 soft magnetism coating of comparative example, the vertical tension data for measuring are 1.6g/
cm2.
The performance that the soft magnetism coating using flaky powder be can be seen that by comparative example 1-3 and comparative example 1-3 is more
By force, the vertical tension ratio that pulling experiment is measured averagely improves about 40% using the soft magnetism coating of spherical or irregularly shaped powder.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out appropriate change and modification.Therefore, specific embodiment disclosed and described above the invention is not limited in, to this
Some modifications and changes of invention should also be as falling in the scope of the claims of the present invention.Although additionally, this specification
Used in some specific terms, but these terms are merely for convenience of description, do not constitute any restriction to the present invention.
Claims (12)
1. the soft magnetism coating for using under a kind of multipole magnetostatic field, it is characterised in that the soft magnetism coating contains the piece of 65-85wt%
The auxiliary agent of shape soft magnetism powder, the binder of 9-25wt%, the diluent of 5-15wt% and 1-5.5wt%, wherein, the sheet is soft
A diameter of 10nm-300 μm of magnetic long axis of body direction, radius-thickness ratio is 1-300, and the binder is polyvinyl acetate and its gathers
Compound latex, acrylate copolymer and its copolymer emulsion, polyvinyl alcohol and its derivative, vinyl halide polymers latex, benzene
Ethene polymers and its copolymer emulsion, diene polymer and its copolymer emulsion, based on the polymer emulsion of fat hydrocarbon,
Polyvinylpyrrolidone and its polymer, epoxy resin copolymer emulsion, amino resins copolymer emulsion, phenolic resin copolymer
Emulsion, polyamide emulsion, alkide resin emulsion, polyaminoester emulsion, silicone resin emulsion, Sodium Polyacrylate, cellulose ether, shallow lake
One or more in powder, animal glue, natural gum.
2. soft magnetism coating according to claim 1, it is characterised in that the sheet soft magnet powder long axis of body direction a diameter of
10 μm -200 μm, radius-thickness ratio is 5-100.
3. soft magnetism coating according to claim 1, it is characterised in that the sheet soft magnetism powder is flake iron powder or sheet
One or more in iron-based, cobalt-based, Ni based soft magnetic powder, sheet soft magnetic ferrite powder.
4. soft magnetism coating according to claim 1, it is characterised in that the diluent is that water, alcohols solvent, ethers are molten
Agent, esters solvent, varsol, one or more in ketones solvent.
5. soft magnetism coating according to claim 1, it is characterised in that the auxiliary agent contains levelling agent, defoamer and dispersion
Agent.
6. soft magnetism coating according to claim 5, it is characterised in that the levelling agent is polyacrylic levelling agent, poly-
One or more in type siloxane levelling agent.
7. soft magnetism coating according to claim 5, it is characterised in that the defoamer is silica, ethanol, ethylene glycol
One or more in monobutyl ether, tributyl phosphate, siloxane polymer, polyethers, natural oil, mineral oil.
8. soft magnetism coating according to claim 5, it is characterised in that the dispersant is carboxylate, sulfonate, phosphoric acid
One or more in salt, alkane hydroxyl amine salt, polyacrylate, polyurethane, block copolymer.
9. a kind of soft-magnetic composite material, including base material and the soft magnetism coating being distributed on base material, it is characterised in that the soft magnetism is applied
Expect the soft magnetism coating used under the multipole magnetostatic field any one of claim 1 to 8, wherein, sheet soft magnetism powder is passed through
Overstress or magnetic field orientating, sheet soft magnetism powder sagittal plane is in the coating along, parallel arrangement uniform with substrate surface parallel direction.
10. the preparation method of the soft magnetism coating for using under a kind of multipole magnetostatic field, it is characterised in that comprise the following steps：
Sheet soft magnetism powder is made with the mode of ball milling or grinding, wherein, the sheet soft magnet powder long axis of body direction a diameter of
10nm-300 μm of radius-thickness ratio is 1-300；
By the sheet soft magnetism powder of 65-85wt%, the binder of 9-25wt%, the diluent of 5-15wt% and 1-5.5wt%
Auxiliary agent is put in dispersion machine and forms mixture, and wherein, the binder is polyvinyl acetate and its polymer emulsion, acrylic acid
Polymer and its copolymer emulsion, polyvinyl alcohol and its derivative, vinyl halide polymers latex, styrene polymer and its altogether
Polymers latex, diene polymer and its copolymer emulsion, based on the polymer emulsion of fat hydrocarbon, polyvinylpyrrolidone and
Its polymer, epoxy resin copolymer emulsion, amino resins copolymer emulsion, phenolic resin copolymer emulsion, polyamide emulsion,
Alkide resin emulsion, polyaminoester emulsion, silicone resin emulsion, Sodium Polyacrylate, cellulose ether, starch, animal glue, natural tree
One or more in glue；
The mixture of uniform stirring sheet soft magnetism powder, binder, diluent and auxiliary agent, obtains soft magnetism coating.
11. preparation methods according to claim 10, it is characterised in that the diameter in the sheet soft magnet powder long axis of body direction
For 10 μm -200 μm, radius-thickness ratio is 5-100.
12. preparation methods according to claim 10, it is characterised in that the sheet soft magnetism powder is flake iron powder or piece
One or more in shape iron-based, cobalt-based, Ni based soft magnetic powder, sheet soft magnetic ferrite powder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310248293.0A CN104231708B (en) | 2013-06-20 | 2013-06-20 | Soft magnetism coating used under multipole magnetostatic field and preparation method thereof |
| PCT/CN2014/075328 WO2014201898A1 (en) | 2013-06-20 | 2014-04-14 | Soft magnetic coating used in multipole static magnetic field and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310248293.0A CN104231708B (en) | 2013-06-20 | 2013-06-20 | Soft magnetism coating used under multipole magnetostatic field and preparation method thereof |
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| CN104231708B true CN104231708B (en) | 2017-03-15 |
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| WO (1) | WO2014201898A1 (en) |
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| CN104821219B (en) * | 2015-05-18 | 2017-06-06 | 朱春芳 | A kind of UV-cured resin cladding soft magnetism powder and its preparation method and application |
| CN105838117B (en) * | 2016-04-27 | 2018-03-16 | 戴雨兰 | One kind is without ground magnetic flitter and its preparation method and application |
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| CN108250926A (en) * | 2018-01-09 | 2018-07-06 | 昆明理工大学 | A kind of soft magnetism coating |
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| CN108504227A (en) * | 2018-03-29 | 2018-09-07 | 广州新莱福磁电有限公司 | A kind of aqueous magnet board coating and preparation method thereof |
| CN110343452A (en) * | 2018-04-08 | 2019-10-18 | 江苏未名之光纳米科技有限公司 | A kind of nano-magnetic coating |
| CN109181512B (en) * | 2018-08-09 | 2021-02-02 | 江苏金羿先磁新材料科技有限公司 | Coating material for improving wireless charging efficiency |
| CN111019428A (en) * | 2020-01-08 | 2020-04-17 | 杨振龙 | Iron putty powder and preparation method thereof |
| JP7022966B2 (en) * | 2020-03-17 | 2022-02-21 | ニチレイマグネット株式会社 | Magnet sheet and magnet surface using water-based magnet paint |
| CN112724731B (en) * | 2020-12-29 | 2022-04-19 | 苏州德达材料科技有限公司 | Magnetic writing wall and preparation process thereof |
| CN113185896A (en) * | 2021-05-07 | 2021-07-30 | 深圳市驭能科技有限公司 | Electromagnetic shielding coating and preparation method and application thereof |
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| WO2014201898A1 (en) | 2014-12-24 |
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Address after: 511356 No.4, Canghai 4th Road, Yonghe Economic Development Zone, Luogang District, Guangzhou City, Guangdong Province Patentee after: Guangzhou xinlaifu New Material Co.,Ltd. Address before: 511356 No.4, Canghai 4th Road, Yonghe Economic Development Zone, Luogang District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Newlife Magnet Electricity Co.,Ltd. |
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Application publication date: 20141224 Assignee: GUANGZHOU XINLAIFU MAGNETIC MATERIALS Co.,Ltd. Assignor: Guangzhou xinlaifu New Material Co.,Ltd. Contract record no.: X2024980003673 Denomination of invention: Soft magnetic coatings and their preparation methods for use in multipole static magnetic fields Granted publication date: 20170315 License type: Common License Record date: 20240329 |
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