CN109879635A - A kind of ultra-thin high magnetic permeability inhales wave plate and its casting slurry and preparation method - Google Patents
A kind of ultra-thin high magnetic permeability inhales wave plate and its casting slurry and preparation method Download PDFInfo
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Abstract
The present invention relates to a kind of ultra-thin high magnetic permeabilities to inhale wave plate and its casting slurry and preparation method, comprises the following components in parts by weight: magnetic powder: 100~500 parts；Resin base material: 10~50 parts；Usual vehicle: 800~1500 parts；Difficult volatile organic compounds solvent: 5~10 parts；Adhesive: 1~5 part of plasticizer: 30~50 parts；Dispersing agent: 5~10 parts.The present invention can obtain ultra-thin and have high magnetic permeability characteristic and resistivity and good toughness, and preparation method technique is easily-controllable, and the suction wave plate yield of preparation is high, and performance is stablized.
Description
Technical field
The invention belongs to technical field of electronic materials more particularly to a kind of ultra-thin high magnetic permeability to inhale wave plate and its casting slurry
And preparation method.
Background technique
Contamination of Electromagnetic Wave has become modern society's another big pollution after air pollution, water pollution, noise pollution.Electricity
Magnetic wave pollutes the normal work that can not only interfere electronic equipment, can also do harm to huamn body.Therefore, searching can weaken or support
The material of electromagnetic radiation is kept off, in recent years materials science field a hot spot.Wherein, electromagnetic interference is inhaled using absorbing material
It receives as a kind of effective means.Using the suction wave material with (such as mobile phone and laptop) on electronic and electrical equipment
Material, be generally placed in by means of adhesive on radiating element or near, so also referred to as near field absorbing material.Close
In, energy is by field domination, therefore absorbing material needs higher magnetic conductivity and magnetic loss rate.In addition, due to electronic equipment
Interior space is limited, and the considerations of for engineer application, the thickness of absorbing material be should not be too large.
Patent " patch-type absorbing material " (patent No.: 201710724811.X) uses reflecting layer, inhales wave layer, gluing
The multilayered structures such as layer, separated type material layer, significantly improve the absorbing property of material.But it is excessive to cause material thickness, approaches
0.8mm, hence it is evident that be not suitable in installation and mobile phone and laptop.
Patent " a kind of absorbing material and preparation method " (patent No.: 201710177977.4) by graphene oxide
It is modified；Resin and modified graphene are uniformly mixed using mechanical stirring, obtain mixture；It will be mixed using roll-type gluing method
It closes material and glue film is made；Solidify glue film and carrier laminate, absorbing material is made.It can get the suction that thickness is different, and wide-band absorbs
Wave material.The thickness of absorbing material is in 0.5mm between 2mm.
Patent " high magnetic permeability inhales wave plate and its casting slurry and preparation method " (patent No.: 201610095229.7) uses
Ball milling method makes Magnaglo that sheet be presented.Magnaglo is coated with organic insulation elastomer again.Utilize difficult volatile organic compounds
As the solvent of casting slurry, not only make the stability of casting slurry good, returns slurry and be orientated under magnetic fields and unanimously leave
Grace time.However, the magnetic conductivity of absorbing material obtained is only capable of reaching 110@3MHz to 130@3MHz.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide ultra-thin high magnetic permeability inhale wave plate and its casting slurry and
Preparation method.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of ultra-thin high magnetic permeability inhales the casting slurry of wave plate, comprises the following components in parts by weight:
Magnetic powder: 100~500 parts；
Resin base material: 10~50 parts；
Usual vehicle: 800~1500 parts；
Difficult volatile organic compounds solvent: 5~10 parts；
Adhesive: 1~5 part
Plasticizer: 30~50 parts；
Dispersing agent: 5~10 parts.
The casting slurry is prepared as follows:
The mixing treatment that the resin base material, usual vehicle, difficult volatile organic solvent, adhesive and plasticizer are carried out,
Obtain macromolecule mixed solution；
It is added in dispersing agent while macromolecule mixed solution is added in magnetic powder and carries out mixing treatment again, stirring and vacuum
Deaeration processing, obtains casting slurry.
Preferably, a kind of ultra-thin high magnetic permeability inhales the casting slurry of wave plate, and the magnetic powder uses sheet-like magnetic powder
At least one of ferro-silicium, sendust, iron silicochromium, iron silicon nickel alloy and iron, silicon, aluminum and nickel alloy are selected in end.
Preferably, a kind of ultra-thin high magnetic permeability inhales the casting slurry of wave plate, and the resin base material uses asphalt mixtures modified by epoxy resin
Any one of rouge, polyurethane, ethylene propylene diene rubber, silicon rubber, polyvinyl butyral and butyl rubber.
Preferably, a kind of ultra-thin high magnetic permeability inhales the casting slurry of wave plate, and the usual vehicle is ethyl alcohol, first
Any one of alcohol, toluene, adjacent benzene or mixed solvent.
Preferably, a kind of ultra-thin high magnetic permeability inhales the casting slurry of wave plate, and the hardly possible volatile organic solvent is fiber crops
Any one of oil, pine tar and olive oil or mixture.
Preferably, a kind of ultra-thin high magnetic permeability inhales the casting slurry of wave plate, and the plasticizer is ethyl class chemical combination
Any one of object, biphenyl compound, glycol compound or mixture.
A kind of ultra-thin high magnetic permeability inhales the preparation method of wave plate, comprising the following steps:
Carry out curtain coating processing according to any casting slurry of claim 1-6, be dried, roll-forming processing,
Slitting treatment, preliminary drying dry-cure, mulching treatment, balance processing, hot pressing cold pressing treatment and cut, quality inspection and dress packet processing.
Preferably, a kind of ultra-thin high magnetic permeability inhales the preparation method of wave plate, and the condition of the curtain coating processing is stream
Prolong 3~6m/s of speed, casting slurry temperature is constant at 40 DEG C；The condition of the drying is 120~150 DEG C；The roll-forming
Treatment conditions are as follows: 110~130 DEG C of mold temperature, roll-in pressure is 15~30Mpa, and the dwell time is 3~5min；The cutting
Treatment conditions are as follows: it is respectively 260mm and 450mm that high magnetic permeability, which is inhaled wave plate according to length and width,；The condition of the preliminary drying dry-cure are as follows:
Drying temperature is at 80~100 DEG C；The condition of the balance processing are as follows: two suction wave plates of each layer of placement place altogether four layers, often
It is separated between layer using protective film；The condition of the hot pressing cold pressing treatment are as follows: first hot-pressing processing, temperature is at 150~170 DEG C, pressure
It is by force 180kgf, the time is maintained at 5min~8min, and the temperature of cold pressing is room temperature, pressure 160kgf, and the time is maintained at 5min
~8min；It cuts, the condition of quality inspection and dress packet processing are as follows: it is cut after folding according to the size of 240*420mm, then quality inspection,
Finally dress packet processing.
A kind of ultra-thin high magnetic permeability suction wave plate, it is by any curtain coating slurry of claim 1-6 that high magnetic permeability, which inhales wave plate,
Material inhales wave plate after including casting technique molding, then through the ultra-thin high magnetic permeability of subsequent processing acquisition of claim 7.
Preferably, a kind of ultra-thin high magnetic permeability stated inhales wave plate, and the ultra-thin high magnetic permeability inhales the thickness of wave plate in 25um
To 300um, magnetic conductivity is in 225@3MHz to 275@3MHz.
According to the above aspect of the present invention, the present invention has at least the following advantages:
Its thickness can be reached 25 μm by the present invention by casting slurry and preparation method, and keep thinner thickness
In the case of ensure its magnetic conductivity in 250@3MHz, under the premise of ensuring quality, moreover it is possible to its thickness is reduced, can be adapted to
More products.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is process flow of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction with attached in the embodiment of the present invention
Figure, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only this
Invention a part of the embodiment, instead of all the embodiments.Embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings
Component can arrange and design with a variety of different configurations.Therefore, the implementation of the invention to providing in the accompanying drawings below
The detailed description of example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiment of the present invention, those skilled in the art are obtained all without making creative work
Other embodiments shall fall within the protection scope of the present invention.
Embodiment
A kind of ultra-thin high magnetic permeability inhales the casting slurry of wave plate, comprises the following components in parts by weight:
Magnetic powder: 100~500 parts；
Resin base material: 10~50 parts；
Usual vehicle: 800~1500 parts；
Difficult volatile organic compounds solvent: 5~10 parts；
Adhesive: 1~5 part
Plasticizer: 30~50 parts；
Dispersing agent: 5~10 parts.
The casting slurry is prepared as follows:
The mixing treatment that the resin base material, usual vehicle, difficult volatile organic solvent, adhesive and plasticizer are carried out,
Obtain macromolecule mixed solution；
It is added in dispersing agent while macromolecule mixed solution is added in magnetic powder and carries out mixing treatment again, stirring and vacuum
Deaeration processing, obtains casting slurry.
High magnetic permeability of the embodiment of the present invention inhales the casting slurry of wave plate using difficult volatile organic compounds solvent as solvent, due to
The organic matter solvent is the not volatile organic matter solvent selected, therefore, on the one hand good to magnetic powder wetability, can be by its table
Face is wrapped up entirely, so that the casting slurry stability that high magnetic permeability of the present invention inhales wave plate is good, to improve the yield of tape casting, is mentioned
The quality and flexibility and resistivity of height suction wave plate；On the other hand slurry is enabled to be easier after casting molding processes
It is orientated under magnetic fields consistent.To assign the suction wave plate high magnetic permeability characteristic of preparation.
Wherein, in embodiment, the magnetic powder uses sheet-like magnetic powder, selects ferro-silicium, sendust, iron silicon
At least one of evanohm, iron silicon nickel alloy and iron, silicon, aluminum and nickel alloy.
The casting slurry that embodiment high magnetic permeability inhales wave plate uses difficult volatile organic compounds solvent as solvent, since this is organic
Object solvent is the not volatile organic matter solvent selected, therefore, on the one hand good to magnetic powder wetability, can be by its surface Quan Bao
It wraps up in, so that the casting slurry stability that high magnetic permeability of the present invention inhales wave plate is good, to improve the yield of tape casting, improves and inhale wave
The quality and flexibility and resistivity of piece；On the other hand slurry is enabled to be easier to make in magnetic field after casting molding processes
It is consistent with lower orientation.To assign the suction wave plate high magnetic permeability characteristic of preparation.In embodiment, the difficult volatile organic solvent is
Any one of sesame oil, pine tar and olive oil or mixture.
In embodiment, the resin base material uses epoxy resin, polyurethane, ethylene propylene diene rubber, silicon rubber, polyvinyl alcohol
Any one of butyral and butyl rubber.
In embodiment, the usual vehicle is any one of ethyl alcohol, methanol, toluene or mixed solvent.
Above-mentioned plasticizer can assist in the components tape casting such as soft magnet powder and resin base material, and improve molding quality.Cause
This, in one embodiment, the plasticizer is any one of ethyl class compound, biphenyl compound, glycol compound
Or mixture.
In embodiment, the dispersing agent is any one of stearic acid, function silane coupling agent.
A kind of preparation method process that ultra-thin high magnetic permeability inhales wave plate of the embodiment of the present invention is as shown in Figure 1 comprising following
Step:
Step 1: obtaining the casting slurry component materials that ultra-thin high magnetic permeability inhales wave plate: ultra-thin high magnetic as described above
Conductance is inhaled component contained by the casting slurry of wave plate and is weighed respectively including magnetic powder, resin base material, usual vehicle, difficult volatile organic compounds
Solvent, adhesive, plasticizer, dispersing agent；
Step 2: preparing molten containing resin base material, usual vehicle, difficult volatile organic compounds solvent, adhesive and plasticizer mixing
Liquid: the weighed organic insulation elastomer of step 1, difficult volatile organic compounds solvent, plasticizer, dispersing agent are subjected to heating mixing
Processing obtains mixed solution；
Step 3: preparing the casting slurry that high magnetic permeability inhales wave plate: magnetic powder and dispersing agent being added into step 2 simultaneously and matched
Mixing treatment again is carried out in the mixed solution of system, stirring, vacuum defoamation processing obtain casting slurry；
Step 4: casting molding processes processing: carrying out curtain coating processing for the casting slurry prepared in step 3, it is dry at
Reason, roll-forming processing；
Step 5: carrying out slitting treatment after roll-forming processing；
Step 6: on the basis of step 5, carrying out prebake；
Step 7: after the completion of drying, mulching treatment；
Step 8: balance processing；
Step 9 hot pressing and cold pressing treatment；
Step 10: cutting, quality inspection and dress are wrapped.
Wherein, in above-mentioned steps 1, weighed high magnetic permeability inhale component raw material contained by the casting slurry of wave plate type and
Content is inhaled described in the casting slurry of wave plate such as high magnetic permeability above, and in order to save length, details are not described herein.
Heating mixing treatment in above-mentioned steps 2 is in order to enable resin base material, usual vehicle, difficult volatile organic compounds are molten
Agent, adhesive, plasticizer, dispersing agent each component can all dissolve, disperse, and form a stable mixed solution.Therefore, the step
Heating mixing treatment in rapid can be have resin base material, usual vehicle, difficult volatile organic compounds solvent, adhesive, plasticizer,
Each ingredient carries out heating and carries out mixing treatment, such as in embodiment, heating temperature 60-80 within the temperature range of capable of tolerating
DEG C, mixing treatment can be conventional mixing method, such as stirring, ultrasound mode.Mixing treatment can be in up to mixed solution
Until now transparent.
In embodiment, the mixing treatment carried out into the mixed solution is added in magnetic powder and dispersing agent by above-mentioned steps 3
It can be such as the mixing treatment in above-mentioned steps 2.It can of course be other mixing methods, as long as making each component dispersion equal
It is even.During this mixing treatment, the mixed solution in step 2 can carry out insulating wrapped to magnetically soft alloy powder, and
Form uniform dispersion.Vacuum defoamation processing after mixing treatment can according to the degassing process of casting slurry routine,
It is not specially required in the embodiment of the present invention.
It is by slurry tape casting that processing processing is cast in above-mentioned steps 4, and in embodiment, the condition of curtain coating processing is
It is cast 3~6m/s of speed, casting slurry temperature is constant at 40 DEG C.The process conditions of curtain coating processing are to combine the embodiment of the present invention
High magnetic permeability inhales the casting slurry property settings of wave plate, can combine the boiling characteristics of difficult volatile organic compounds solvent in slurry, from
And the quality of tape casting is improved, and be conducive to be orientated under magnetic fields unanimously, so that the suction wave plate high magnetic permeability for assigning preparation is special
Property.
The drying process of the step is in order to remove solvent, such as difficult volatile organic compounds solvent composition, in embodiment, dry
Condition is 120~150 DEG C.The condition of the drying process can cooperate the characteristic of difficult volatile organic compounds solvent, so that difficult volatilization has
Machine object solvent soaks magnetic powder, on the other hand can guarantee that it is orientated the consistent time under magnetic fields, to effectively improve suction
Wave plate high magnetic permeability characteristic.
In embodiment, the condition of the roll-forming processing in the step 4 are as follows: 110~130 DEG C of mold temperature, molding pressure
It is by force 15~30Mpa, the dwell time is 3~5min.
In embodiment, in step 5 after roll-forming processing, the slitting treatment condition are as follows: high magnetic permeability is inhaled into wave
Piece is respectively 260mm and 450mm according to length and width；
In embodiment, prebake condition is carried out in step 6 are as follows: drying temperature is at 80~100 DEG C；
In embodiment, mulching treatment in step 7；
In embodiment, balance is handled in step 8, two suction wave plates of each layer of placement, places four layers, between every layer altogether
It is separated using protective film；
In embodiment, in step 9 hot pressing and cold pressing treatment condition are as follows: first hot-pressing processing, temperature at 150~170 DEG C,
Pressure is 180kgf, and the time is maintained at 5min~8min, and the temperature of cold pressing is room temperature, pressure 160kgf, and the time is maintained at
5min~8min；
In embodiment, it is cut in step 10, quality inspection and dress are wrapped, wherein cut out after folding according to the size of 240*420mm
It cuts, then quality inspection, finally fills packet processing.
High magnetic permeability of the embodiment of the present invention inhale wave plate preparation method first using containing hardly possible volatilization mixed solution to piece magnetic powder into
After row wetting and the package that insulate, the resistivity for inhaling wave plate is greatly improved, eddy-current loss is reduced, there is suction wave plate preferably
Impedance matching property；It is formed using blade coating, due to the presence of difficult volatile organic compounds solvent, so that being easier to make in magnetic field after curtain coating
It is consistent with lower orientation, to improve the magnetic conductivity for inhaling wave plate, and there is good flexibility, the suction wave plate yield of preparation is high.
Embodiment one
A kind of ultra-thin high magnetic permeability inhales the casting slurry of wave plate, comprises the following components in parts by weight:
Magnetic powder: ferro-silicium, 450 parts；
Resin base material: polyvinyl butyral, 27 parts；
Usual vehicle: ethyl alcohol, 352 parts, toluene, 950 parts, adjacent benzene, 10 parts；
Difficult volatile organic compounds solvent: sesame oil, 2.5 parts, pine tar, 5 parts；
Adhesive: 250 glue, 3 parts
Plasticizer: ethyl class compound, 33.75 parts, glycol, 4 parts, n-butanol, 2.5 parts；
Dispersing agent: stearic acid, 3 parts.
The present embodiment high magnetic permeability inhale wave plate the preparation method is as follows:
Step 21: inhaling component contained by the casting slurry of wave plate according to 1 high magnetic permeability of the present embodiment and weighed respectively including soft
Magnetic powder, resin base material, usual vehicle, difficult volatile organic compounds solvent, adhesive, plasticizer, dispersant component raw material；
Step 22: by the weighed institute's resin base material of step 21, usual vehicle, difficult volatile organic compounds solvent, adhesive, plasticising
Agent, dispersing agent are carried out at heating stirring mixing treatment at 80 DEG C, obtain mixed solution；
Step 23: magnetic powder weighed in step S21 being added in the mixed solution prepared into step S22 and is carried out again
Secondary stir mixing processing, vacuum defoamation processing obtain casting slurry；
Step 24: the casting slurry prepared in step S23 is subjected to curtain coating processing, be dried and roll-forming at
Reason；Wherein, it is cast the condition of processing as curtain coating speed 5m/s, casting slurry temperature is constant at 40 DEG C, and the condition of drying process is,
The condition of roll-forming processing is 130 DEG C of mold temperature, and molding pressure is 30Mpa, dwell time 3min；
Step 25: after roll-forming processing, the slitting treatment condition are as follows: high magnetic permeability is inhaled into wave plate according to length and width point
It Wei not 260mm and 450mm；
Step 26: carrying out prebake condition are as follows: drying temperature is at 80 DEG C；
Step 27: mulching treatment；
Step 28: balance processing, two suction wave plates of each layer of placement place altogether four layers, and protective film is used between every layer
It separates；
Step 29: the condition of hot pressing and cold pressing treatment are as follows: first hot-pressing processing, temperature at 150 DEG C, pressure 180kgf, when
Between be maintained at 5min, the temperature of cold pressing is room temperature, pressure 160kgf, and the time is maintained at 8min；
Step 30: cutting, quality inspection and dress are wrapped, wherein cut after folding according to the size of 240*420mm, then quality inspection, most
Dress packet processing afterwards.
Embodiment two
A kind of ultra-thin high magnetic permeability inhales the casting slurry of wave plate, comprises the following components in parts by weight:
Magnetic powder: sendust, 450 parts；
Resin base material: polyvinyl butyral, 25 parts；
Usual vehicle: ethyl alcohol, 300 parts, toluene, 900 parts；
Difficult volatile organic compounds solvent: sesame oil, 2.5 parts, pine tar, 5 parts；
Adhesive: 250 glue, 3 parts
Plasticizer: ethyl class compound, 32 parts, glycol, 4 parts；
Dispersing agent: stearic acid, 3 parts, silane coupling agent, 3 parts.
The present embodiment high magnetic permeability inhale wave plate the preparation method is as follows:
Step 21: inhaling component contained by the casting slurry of wave plate according to 1 high magnetic permeability of the present embodiment and weighed respectively including soft
Magnetic powder, resin base material, usual vehicle, difficult volatile organic compounds solvent, adhesive, plasticizer, dispersant component raw material；
Step 22: by the weighed institute's resin base material of step 21, usual vehicle, difficult volatile organic compounds solvent, adhesive, plasticising
Agent, dispersing agent are carried out at heating stirring mixing treatment at 60 DEG C, obtain mixed solution；
Step 23: magnetic powder weighed in step S21 being added in the mixed solution prepared into step S22 and is carried out again
Secondary stir mixing processing, vacuum defoamation processing obtain casting slurry；
Step 24: the casting slurry prepared in step S23 is subjected to curtain coating processing, be dried and roll-forming at
Reason；Wherein, it is cast the condition of processing as curtain coating speed 3m/s, casting slurry temperature is constant at 40 DEG C, and the condition of drying process is,
The condition of roll-forming processing is 110 DEG C of mold temperature, and molding pressure is 20Mpa, dwell time 4min.
Step 25: after roll-forming processing, the slitting treatment condition are as follows: high magnetic permeability is inhaled into wave plate according to length and width point
It Wei not 260mm and 450mm；
Step 26: carrying out prebake condition are as follows: drying temperature is at 90 DEG C；
Step 27: mulching treatment；
Step 28: balance processing, two suction wave plates of each layer of placement place altogether four layers, and protective film is used between every layer
It separates；
Step 29: the condition of hot pressing and cold pressing treatment are as follows: first hot-pressing processing, temperature at 160 DEG C, pressure 180kgf, when
Between be maintained at 7min, the temperature of cold pressing is room temperature, pressure 160kgf, and the time is maintained at 7min；
Step 30: cutting, quality inspection and dress are wrapped, wherein cut after folding according to the size of 240*420mm, then quality inspection, most
Dress packet processing afterwards.
Embodiment three
A kind of ultra-thin high magnetic permeability inhales the casting slurry of wave plate, comprises the following components in parts by weight:
Magnetic powder: sendust, 450 parts；
Resin base material: polyurethane, 30 parts；
Usual vehicle: methanol, 400 parts, toluene, 900 parts；
Difficult volatile organic compounds solvent: sesame oil, 2.5 parts, pine tar, 5 parts；
Adhesive: 250 glue, 3 parts
Plasticizer: ethyl class compound, 33.75 parts, glycol, 4 parts, n-butanol, 2.5 parts；
Dispersing agent: stearic acid, 3 parts.
The present embodiment high magnetic permeability inhale wave plate the preparation method is as follows:
Step 21: inhaling component contained by the casting slurry of wave plate according to 1 high magnetic permeability of the present embodiment and weighed respectively including soft
Magnetic powder, resin base material, usual vehicle, difficult volatile organic compounds solvent, adhesive, plasticizer, dispersant component raw material；
Step 22: by the weighed institute's resin base material of step 21, usual vehicle, difficult volatile organic compounds solvent, adhesive, plasticising
Agent, dispersing agent are carried out at heating stirring mixing treatment at 80 DEG C, obtain mixed solution；
Step 23: magnetic powder weighed in step S21 being added in the mixed solution prepared into step S22 and is carried out again
Secondary stir mixing processing, vacuum defoamation processing obtain casting slurry；
Step 24: the casting slurry prepared in step S23 is subjected to curtain coating processing, be dried and roll-forming at
Reason；Wherein, it is cast the condition of processing as curtain coating speed 4m/s, casting slurry temperature is constant at 40 DEG C, and the condition of drying process is,
The condition of roll-forming processing is 120 DEG C of mold temperature, and molding pressure is 15Mpa, dwell time 5min.
Step 25: after roll-forming processing, the slitting treatment condition are as follows: high magnetic permeability is inhaled into wave plate according to length and width point
It Wei not 260mm and 450mm；
Step 26: carrying out prebake condition are as follows: drying temperature is at 100 DEG C；
Step 27: mulching treatment；
Step 28: balance processing, two suction wave plates of each layer of placement place altogether four layers, and protective film is used between every layer
It separates；
Step 29: the condition of hot pressing and cold pressing treatment are as follows: first hot-pressing processing, temperature at 170 DEG C, pressure 180kgf, when
Between be maintained at 5min, the temperature of cold pressing is room temperature, pressure 160kgf, and the time is maintained at 5min；
Step 30: cutting, quality inspection and dress are wrapped, wherein cut after folding according to the size of 240*420mm, then quality inspection, most
Dress packet processing afterwards.
Example IV
A kind of ultra-thin high magnetic permeability inhales the casting slurry of wave plate, comprises the following components in parts by weight:
Magnetic powder: iron, silicon, aluminum and nickel alloy, 450 parts；
Resin base material: polyvinyl butyral, 30 parts；
Usual vehicle: ethyl alcohol, 300 parts, toluene, 900 parts, adjacent benzene, 10 parts；
Difficult volatile organic compounds solvent: sesame oil, 2.5 parts, pine tar, 5 parts；
Adhesive: 250 glue, 3 parts
Plasticizer: ethyl class compound, 35 parts, glycol, 4 parts, n-butanol, 2.5 parts；
Dispersing agent: stearic acid, 3 parts, silane coupling agent, 3 parts.
The present embodiment high magnetic permeability inhale wave plate the preparation method is as follows:
Step 21: inhaling component contained by the casting slurry of wave plate according to 1 high magnetic permeability of the present embodiment and weighed respectively including soft
Magnetic powder, resin base material, usual vehicle, difficult volatile organic compounds solvent, adhesive, plasticizer, dispersant component raw material；
Step 22: by the weighed institute's resin base material of step 21, usual vehicle, difficult volatile organic compounds solvent, adhesive, plasticising
Agent, dispersing agent are carried out at heating stirring mixing treatment at 80 DEG C, obtain mixed solution；
Step 23: magnetic powder weighed in step S21 being added in the mixed solution prepared into step S22 and is carried out again
Secondary stir mixing processing, vacuum defoamation processing obtain casting slurry；
Step 24: the casting slurry prepared in step S23 is subjected to curtain coating processing, be dried and roll-forming at
Reason；Wherein, it is cast the condition of processing as curtain coating speed 5m/s, casting slurry temperature is constant at 40 DEG C, and the condition of drying process is,
The condition of roll-forming processing is 130 DEG C of mold temperature, and molding pressure is 30Mpa, dwell time 5min.
Step 25: after roll-forming processing, the slitting treatment condition are as follows: high magnetic permeability is inhaled into wave plate according to length and width point
It Wei not 260mm and 450mm；
Step 26: carrying out prebake condition are as follows: drying temperature is at 100 DEG C；
Step 27: mulching treatment；
Step 28: balance processing, two suction wave plates of each layer of placement place altogether four layers, and protective film is used between every layer
It separates；
Step 29: the condition of hot pressing and cold pressing treatment are as follows: first hot-pressing processing, temperature at 170 DEG C, pressure 180kgf, when
Between be maintained at 8min, the temperature of cold pressing is room temperature, pressure 160kgf, and the time is maintained at 8min；
Step 30: cutting, quality inspection and dress are wrapped, wherein cut after folding according to the size of 240*420mm, then quality inspection, most
Dress packet processing afterwards.High magnetic permeability inhales the test of wave plate correlated performance:
The high magnetic permeability that above-described embodiment 1 to embodiment 4 is provided inhales wave plate and carries out the survey such as correlated performance in the following table 1
Examination, test result is as follows states table 1.
Table 1
| Embodiment | Embodiment one | Embodiment two | Embodiment three | Example IV |
| Magnetic conductivity@3MHz | 242 | 256 | 260 | 238 |
| Resistivity Ω | 104~106 | 104~106 | 104~106 | 104~106 |
By above-mentioned table 1 it is found that the ultra-thin high magnetic permeability that is provided in above-described embodiment 1-4 inhale wave plate have high magnetic conductivity and
Resistivity (the product resistivity of different-thickness changes), therefore, with characteristics such as better impedance matchings.
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is several improvement and
Modification, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of ultra-thin high magnetic permeability inhales the casting slurry of wave plate, comprise the following components in parts by weight:
Magnetic powder: 100~500 parts；
Resin base material: 10~50 parts；
Usual vehicle: 800~1500 parts；
Difficult volatile organic compounds solvent: 5~10 parts；
Adhesive: 1~5 part
Plasticizer: 30~50 parts；
Dispersing agent: 5~10 parts.
The casting slurry is prepared as follows:
The mixing treatment that the resin base material, usual vehicle, difficult volatile organic solvent, adhesive and plasticizer are carried out, obtains
Macromolecule mixed solution；
It is added in dispersing agent while macromolecule mixed solution is added in magnetic powder and carries out mixing treatment again, stirring and vacuum defoamation
Processing obtains casting slurry.
2. the casting slurry that a kind of ultra-thin high magnetic permeability according to claim 1 inhales wave plate, it is characterised in that: the magnetic powder
Using sheet-like magnetic powder, ferro-silicium, sendust, iron silicochromium, iron silicon nickel alloy and iron, silicon, aluminum and nickel alloy are selected
At least one of.
3. the casting slurry that a kind of ultra-thin high magnetic permeability according to claim 1 inhales wave plate, it is characterised in that: the resin
Substrate is using any in epoxy resin, polyurethane, ethylene propylene diene rubber, silicon rubber, polyvinyl butyral and butyl rubber
Kind.
4. the casting slurry that a kind of ultra-thin high magnetic permeability according to claim 1 inhales wave plate, it is characterised in that: described common
Solvent is any one of ethyl alcohol, methanol, toluene and adjacent benzene or mixed solvent.
5. the casting slurry that a kind of ultra-thin high magnetic permeability according to claim 1 inhales wave plate, it is characterised in that: the difficulty is waved
Hair organic solvent is any one of sesame oil, pine tar and olive oil or mixture.
6. the casting slurry that a kind of ultra-thin high magnetic permeability according to claim 1 inhales wave plate, it is characterised in that: the plasticising
Agent is any one of ethyl class compound, biphenyl compound, alcohols/glycol compound or mixture.
7. the preparation method that a kind of ultra-thin high magnetic permeability inhales wave plate, which comprises the following steps:
Curtain coating processing is carried out according to any casting slurry of claim 1-6, is dried, roll-forming processing, cutting
Processing, preliminary drying dry-cure, mulching treatment, balance processing, hot pressing cold pressing treatment and cut, quality inspection and dress packet processing.
8. a kind of ultra-thin high magnetic permeability according to claim 7 inhales the preparation method of wave plate, it is characterised in that: the curtain coating
The condition of processing is curtain coating 3~6m/s of speed, and casting slurry temperature is constant at 40 DEG C；The condition of the drying is 120~150
℃；The roll-forming treatment conditions are as follows: 110~130 DEG C of mold temperature, roll-in pressure is 15~30Mpa, dwell time 3
~5min；The slitting treatment condition are as follows: it is respectively 260mm and 450mm that high magnetic permeability, which is inhaled wave plate according to length and width,；The preliminary drying
The condition of dry-cure are as follows: drying temperature is at 80~100 DEG C；The condition of the balance processing are as follows: two suction wave plates of each layer of placement,
Four layers are placed altogether, are separated between every layer using protective film；The condition of the hot pressing cold pressing treatment are as follows: first hot-pressing processing, temperature
At 150~170 DEG C, pressure 180kgf, the time is maintained at 5min~8min, and the temperature of cold pressing is room temperature, pressure 160kgf,
Time is maintained at 5min~8min；It cuts, the condition of quality inspection and dress packet processing are as follows: according to the size of 240*420mm after folding
It cuts, then quality inspection, finally fills packet processing.
9. a kind of ultra-thin high magnetic permeability inhales wave plate, it is characterised in that: it is any described by claim 1-6 that high magnetic permeability, which inhales wave plate,
Casting slurry after including casting technique molding, then ultra-thin high magnetic permeability is obtained by the subsequent processing of claim 7 and is inhaled
Wave plate.
10. a kind of ultra-thin high magnetic permeability according to claim 9 inhales wave plate, it is characterised in that: the ultra-thin high magnetic permeability
The thickness of wave plate is inhaled in 25um to 300um, and magnetic conductivity is in 225@3MHz to 275@3MHz.
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