CN110484112A - Electromagnetic Interference inhibits coating and its prepares the method that Electromagnetic Interference inhibits coating - Google Patents
Electromagnetic Interference inhibits coating and its prepares the method that Electromagnetic Interference inhibits coating Download PDFInfo
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- CN110484112A CN110484112A CN201811566637.1A CN201811566637A CN110484112A CN 110484112 A CN110484112 A CN 110484112A CN 201811566637 A CN201811566637 A CN 201811566637A CN 110484112 A CN110484112 A CN 110484112A
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- 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
- C09D5/32—Radiation-absorbing paints
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- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- 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
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K2003/023—Silicon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The invention discloses a kind of Electromagnetic Interferences to inhibit coating, and it includes soft magnetic powder, thermoplastic polyurethane, organic curing agent, organic solvent and surfactants；The present invention also provides the preparation method that a kind of Electromagnetic Interference inhibits coating, coating coating is laid on the macromolecule membrane supporter of continuous rotation and forms coating, and rotating excitation field orientation process is carried out to coating simultaneously；Above-mentioned molding coating is removed from macromolecule membrane supporter, and at least one layer of molding coating is subjected to curing process.Electromagnetic Interference prepared by the present invention inhibits coating, and not only electromagnetic wave absorbability is strong, and has excellent mechanical strength, machinability.
Description
Technical field
The present invention relates to electronic element device materials technical fields, inhibit coating and one more particularly to a kind of Electromagnetic Interference
The high magnetic permeability Electromagnetic Interference that kind can effectively inhibit electromagnetic interference problem in high-frequency circuit/device inhibits the system of coating
Preparation Method.
Background technique
It is universal with electronic equipments such as mobile phone, PC and tablet computers, the interfering, interfere of electromagnetic wave,
Maloperation or information theft have become technical problem and social concern.Currently, the Retraining Measures as this Electromagnetic Interference,
The general soft magnetic material using high magnetic permeability is used as electromagnetic wave absorb.After soft magnetic material electromagnetic wave absorption, by certainly
Electromagnetic wave energy can be converted to heat by rotation reversion or magnetic wall movement, to reduce the electromagnetic intensity of transmission or reflection.
It is usually to be carried out by being kneaded rolling process that Electromagnetic Interference, which inhibits the preparation of coating,.It, will be flat soft in this method
The adhesives such as Magnaglo and rubber and haloflex are kneaded with kneader to scale, by gained mixture in pressure roller etc.
It is rolled into specific thickness in device, further according to needing to make adhesive heat cross-linking, inhibits thus to obtain the Electromagnetic Interference of single layer
Coating.This method have can with high density fill soft magnetic powder, can by calendering so that soft magnetic powder direction in face is taken
The advantages of adjusting is easy to the thickness of, piece.But be kneaded in rolling process, soft magnetic powder generates strain, while soft magnetism when mixing
Property powder be difficult to fill Electromagnetic Interference to high-density and inhibit coating, therefore the magnetic of soft magnetic powder itself reduces, and causes nothing
Method increases the problem of Electromagnetic Interference inhibits the magnetic conductivity of coating.In addition, in high temperature or the thickness court of hot and humid environment bottom sheet
The direction change thickened, have the problem of magnetic conductivity reduction.Also, it with small-sized, the slimming of electronic equipment, needs lighter
Thin while excellent electromagnetic wave absorption performance Electromagnetic Interference inhibits coating.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of sides for preparing high magnetic permeability Electromagnetic Interference and inhibiting coating
Method, the Electromagnetic Interference of preparation inhibits coating, and not only electromagnetic wave absorbability is strong, and has excellent mechanical strength, can be processed
Property, frivolous, soft and shape retention.
In order to solve the above technical problems, the present invention, which provides a kind of Electromagnetic Interference, inhibits coating, it includes soft magnetic powder,
Thermoplastic polyurethane, organic curing agent, organic solvent and surfactant include soft magnetism powder in the coating by weight percentage
End 29%~59%, thermoplastic polyurethane 5%~9%, organic curing agent 0.5%~1.6% and organic solvent 35%~62%.
Soft magnetic powder of the invention includes Fe-Si-Al alloy, Fe-Cr-Al-Si alloy, Fe-Ni alloy/C, Fe-Cu-Si
Alloy, Fe-Si alloy, Fe-Si-B (- Cu-Nb) alloy, Fe-Si-Cr-Ni alloy, Fe-Si-Cr alloy, Fe-Si-Al-Ni-
At least one of Cr alloy, ferrite.Preferable scheme is that Fe-Si-Al alloy powder is as soft magnetic powder.Fe-Si-Al
The preferred average grain diameter of alloy powder is 0.5-100 μm, 0.1-3.0 μm of average thickness, and more preferable average grain diameter is 10-100 μm, puts down
Equal 0.5-2.5 μm of thickness.In order to which the magnetic conductivity for making Electromagnetic Interference inhibit coating increases, increase the particle ruler of soft magnetic powder
It is very little, reduce the interval between particle and improve the length-width ratio of soft magnetic powder and reduce the influence of degaussing in soft magnetic powder
It is effective.
The molecular weight of thermoplastic polyurethane of the invention is in 10000-1000000g/mol.Preferable scheme is that thermoplastic poly
The molecular weight of urethane is in 300000-7000000g/mol.Thermoplastic polyurethane plays the role of bonding soft magnetic powder.
Organic curing agent of the invention includes 1,3- bis- (tert-butyl peroxy isopropyl) benzene, N, and N '-metaphenylene span carrys out acyl
Imines, Triallyl isocyanurate, isocyanate compound, cumyl peroxide, diacyl peroxide, tertiary alkyl mistake
At least one of oxygen acid esters, alkyl hydroperoxide, dialkyl peroxide, dialkyl group peroxy ketal.Preferable scheme is that
1,3- bis- (tert-butyl peroxy isopropyl) benzene and N, N '-meta-phenylene bismaleimide are as thermoplastic polyurethane.It is organic curing
In heating and pressure forming processing, with thermoplastic polyurethane cross-coupling reaction occurs for agent, and inhibits in Electromagnetic Interference
Solidify based near the surface of coating, prevents soft magnetic powder and thermoplastic polyurethane from inhibiting coating de- from Electromagnetic Interference
It falls.Thermoplastic polyurethane ingredient is insufficient, will lead to and generates uneven thickness on coated face, and hot-workability is deteriorated, and when coating generates item
Line.In addition, the amount relative to organic curing agent, if the amount of thermoplastic polyurethane is relatively more, Electromagnetic Interference inhibits to apply
Layer softens；Increase if the amount of organic curing agent is opposite, Electromagnetic Interference inhibits coating to be hardened.Therefore, in coating, thermoplastic
In 5%~9% weight ratio range, organic curing agent more makes property polyurethane relatively in 0.5%~1.6% weight ratio range
With organic curing agent, then the Electromagnetic Interference that high reliability can be obtained inhibits coating.
Organic solvent of the invention includes cyclohexanone, tetrahydrofuran, acetone, methyl ethyl ketone, methyl iso-butyl ketone (MIBK), first
At least one of benzene, dimethylbenzene, benzene, ethyl acetate, n-butyl acetate, dioxane.Preferable scheme is that cyclohexanone and/or
Toluene is as organic solvent.
It by weight percentage further include surfactant 0.2%~3% in coating of the invention.
The surfactant of coating of the present invention selects phthalic acid two (2- ethyl hexyl) ester, graphite, molybdenum disulfide, two sulphur
The aliphatic ester for the alcohol composition that the fatty acid and these fatty acid and carbon number that change tungsten, lecithin, carbon number are 2-26 are 2-26,
At least one of terpene compound class and their oligomer, silicone oil, dioctyl adipate.Surfactant can be with
Promote the high uniformity dispersion of soft magnetic powder in the slurry, and reduce Electromagnetic Interference and inhibit the bubble generated in coating, protects
It demonstrate,proves Electromagnetic Interference and inhibits the smooth, smooth of coating surface.
Thermoplastic polyurethane organic solvent dissolution of the invention is configured to the solution that solid content is 30% to store and standby
With.Preferred scheme, use cyclohexanone as organic solvent dissolution thermoplastic polyurethane be configured to solid content be 30% solution with
It stores and spare.
The present invention also provides a kind of Electromagnetic Interference inhibit coating preparation method, successively the following steps are included:
(1) macromolecule membrane that any of the above-described Electromagnetic Interference inhibits coating coating to be laid in continuous rotation is supported
Coating is formed on body, and rotating excitation field orientation process is carried out to coating simultaneously, is then dried at 85-155 DEG C, molding painting
Layer is with a thickness of 0.06mm-0.2mm；
(2) it post-processes: above-mentioned molding coating is removed from macromolecule membrane supporter, and by least one layer of molding
Coating carries out curing process, and for solidification temperature range at 170-200 DEG C, it is dry to obtain electromagnetic wave in 6-8.5MPa for solidifying pressure range
Disturb inhibition coating.
The present invention is coated with preparation Electromagnetic Interference and inhibits in the method and step 1 of coating, in macromolecule membrane supporter
The upper Electromagnetic Interference that formed inhibits the coating method of coating to be also not particularly limited, and existing method can be used, for example, air
Blade coating, blade coating, bar coating, airblade coating, extrusion coated, infiltration coating, reverse roll coating, transferring roller are coated with, are recessed
Version coating, kiss-coating, cast coat, extrusion coated, slot coated, spin coating etc..By using the apparatus for coating of these modes,
It can be coated in the single or double of macromolecule membrane supporter.Preferred polymeric membrane supporter is also possible to poly- terephthaldehyde
Sour glycol ester (PET), polyvinylidene fluoride (PVDF), polypropylene (PP), polyamide, polyethers, is gathered polytetrafluoroethylene (PTFE) (PTFE)
Other macromolecule membranes such as ether sulfone.
The present invention is coated with preparation Electromagnetic Interference and inhibits in the method and step 1 of coating, carries out rotating excitation field orientation to coating
Processing.In coating process, since the magnetic moment of the influence soft magnetic powder of shape anisotropy tends to arrange in piece,
After applying an externally-applied magnetic field to the soft magnetic powder of confusion distribution, since the direction of magnetization deviates easy magnetization face, one will be generated
Torque on soft magnetic powder, make its easy magnetization face tend to along magnetic direction arrange.Due to thermoplastic polyurethane at this time
Bonding agent is in a liquid state or glue, and frictional force when soft magnetic powder rotates will greatly reduce.Such orientation process continues 1
Minute or more after, the movement of soft magnetic powder can reach certain balance, while thermoplastic polyurethane also gradually solidifies, by soft magnetism
Property powder is maintained on the position of specific orientation.Soft magnetism powder with specific orientation makes Electromagnetic Interference inhibit coating in spy
It is very high to the absorption coefficient of electromagnetic wave in fixed orientation, be conducive to its electronics for being widely used in generating specific orientation electromagnetic interference and set
It is standby.
The present invention is coated with preparation Electromagnetic Interference and inhibits to be dried in the method and step 1 of coating as gradient temperature-gradient method
Process.Gradient temperature-gradient method processing, which avoids the too fast heating of coating, causes solvent volatilization is too fast coating is caused bubble occur and split
Trace.
The present invention is coated with preparation Electromagnetic Interference and inhibits in the method and step 1 of coating, and the velocity interval of coating is in 2-4.2m/
min.Be coated processing in the velocity interval of 2-4.2m/min coating, it is available continuously, thickness it is uniform, soft magnetic powder
The high Electromagnetic Interference of compactedness inhibits coating, so that it is with higher magnetic conductivity.
The present invention is coated with preparation Electromagnetic Interference and inhibits in the method and step 2 of coating, and the velocity interval of curing process exists
0.3-2.5m/min.Carry out curing process in the cured velocity interval of 0.3-2.5m/min, be conducive to obtain curing degree it is high,
The Electromagnetic Interference that thickness is uniform, toughness is high and soft magnetic powder compactedness is high inhibits coating, so that it is with higher magnetic conductance
Rate.
Electromagnetic Interference of the invention inhibits coating tensile strength too small, then insufficient compression, soft magnetic powder cannot be close
Ground filling may cause coat inside and be mixed into air, and thickness change increases；On the contrary, tensile strength is excessive, then coating excessive pressure
Contracting, coating flexibility reduce, therefore preferably 20MPa or more, 50MPa is hereinafter, more preferable 25MPa or more, 45MPa or less.It stretches
Intensity in the range, then has the flexibility of appropriateness, has hardness with time slice itself, excellent operability and machinability will
Yield rate when Electromagnetic Interference inhibits coating to be assembled into electronic equipment etc. does not reduce.The tensile strength of coating is set in this
The method of preferred scope can be carried out by adjusting the dosage of solidifying pressure, curing process speed or soft magnetic powder.
The beneficial effects of the present invention are: the advantage of present invention combination rubbing method, provides a kind of Electromagnetic Interference inhibition coating
And corresponding coating is provided and prepares the method that high magnetic permeability Electromagnetic Interference inhibits coating, the Electromagnetic Interference of preparation inhibits to apply
Not only electromagnetic wave absorbability is strong for layer, and has excellent mechanical strength, machinability, frivolous, soft and shape retention.
Specific embodiment
The preferred embodiments of the present invention will be described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.
Embodiment 1
By 98 parts per weight of thermoplastic's polyurethane, (ten thousand) Sigma-Aldrich preparation, average molecular weight 40 use organic solvent 170
Parts by weight of toluene and the dissolution of 130 parts by weight cyclohexanone are configured to glue, and by 500 parts by weight Fe-Si-Al alloy soft magnetic powder
(specific surface area 0.23m2/ g, anisotropy field 135Oe, resonant frequency fr ": 2000MHz) it is dispersed in glue, then it is added
200 parts by weight cyclohexanone and 10 parts by weight organic curing agents 1,3- bis- (tert-butyl peroxy isopropyls), 12 parts surfactants
Phthalic acid two (2- ethyl hexyl) ester, is made uniform coating.
Coating material temperature is adjusted to 25 DEG C, the PET high score for being laid in continuous rotation is coated with the coating speed of 2m/min
Coating is formed on sub- film support, and rotating excitation field orientation process is carried out to coating simultaneously, then at 85-155 DEG C of drying
Reason, coating are dried by 90 DEG C, 110 DEG C, 130 DEG C of three-level baking ovens, using 135 DEG C, 140 DEG C, 145 DEG C of fourth stages, the
Pyatyi, the 6th grade of baking oven finally pass through the 7th grade 150 DEG C of oven drying, and molding coating layer thickness is after being dried
0.1mm or so.
Above-mentioned molding coating is removed from PET macromolecule membrane supporter.Prepare the coating of 4 removings for their layers
It closes, the two sides of the laminates is obtained into PET clamping with peelable, the paper material conduct of 100 μ m-thicks is further configured on the two sides
Padded coaming, by two sides with two panels stainless steel plate clamp, with drum vulcanizer with the pressure of 6Mpa at 175 DEG C with 2m/min's
Curing rate is solidified, and is obtained Electromagnetic Interference and is inhibited coating.
To gained Electromagnetic Interference inhibit coating implement heat resistant test (80 DEG C of temperature, humidity 60Rh% baking oven in it is quiet
Set 72 hours), Electromagnetic Interference inhibits the thickness of coating to thinning direction change after heat resistant test, but with heat resistant test before
On the basis of Electromagnetic Interference inhibits coating, change rate is lower than 1%.It is 50 or more that Effective permeability μ ', which is worth, and magnetic loss μ is " low
In 2.Effective permeability μ ' is measured under carrier frequency (13.4MHz) using impedance analyzer (Agilent Technology offer)
Inductance and resistance value, and calculate magnetic conductivity.
Measuring glossiness of the gained Electromagnetic Interference inhibition coating under 60 ° of incidence angle (- 60 °) using glossometer is
31%.Glossiness preferred scope is 20-50%.
Tensile strength using tensile tester measurement 0.25mm thickness, the sample of 50mm wide, 100mm long is 32MPa.It stretches
Intensity preferred scope is 20-50MPa.
Using abrasion meter in 50N/m2Electromagnetic Interference is worn under pressure and inhibits coating sample 30mins, and abrasion loss is small
In 5%, and gained coating is not observed there is a shed powder, soft magnetic powder is not fallen off when touching coating.
The Electromagnetic Interference of preparation inhibits magnetic conductivity, glossiness, tensile strength, the resistance, flexibility, shape holding of coating
Property shows good result.
Embodiment 2
By 88 parts per weight of thermoplastic's polyurethane, (ten thousand) Sigma-Aldrich preparation, average molecular weight 40 use organic solvent 100
Parts by weight of toluene and the dissolution of 170 parts by weight cyclohexanone are configured to glue, and by 500 parts by weight Fe-Si-Al alloy soft magnetic powder
(specific surface area 0.27m2/ g, anisotropy field 115Oe, resonant frequency fr ": 2000MHz) it is dispersed in glue, then it is added
500 parts by weight cyclohexanone, 4 parts by weight organic curing agents 1, bis- (tert-butyl peroxy isopropyl) benzene of 3- and 4 parts by weight N, N '-sub- benzene
Base bismaleimide, 5 parts surfactant phthalic acid two (2- ethyl hexyl) esters, are made uniform coating.
Coating material temperature is adjusted to 25 DEG C, the PET high score for being laid in continuous rotation is coated with the coating speed of 2m/min
Coating is formed on sub- film support, and rotating excitation field orientation process is carried out to coating simultaneously, then at 85-155 DEG C of drying
Reason, coating are dried by 90 DEG C, 110 DEG C, 130 DEG C of three-level baking ovens, using 135 DEG C, 140 DEG C, 145 DEG C of fourth stages, the
Pyatyi, the 6th grade of baking oven finally pass through the 7th grade 150 DEG C of oven drying, and molding coating layer thickness is after being dried
0.1mm or so.
Above-mentioned molding coating is removed from PET macromolecule membrane supporter.Prepare the coating of 2 removings for their layers
It closes, the two sides of the laminates is obtained into PET clamping with peelable, the paper material conduct of 100 μ m-thicks is further configured on the two sides
Padded coaming, by two sides with two panels stainless steel plate clamp, with drum vulcanizer with the pressure of 6Mpa at 175 DEG C with 2m/min's
Curing rate is solidified, and is obtained Electromagnetic Interference and is inhibited coating.
To gained Electromagnetic Interference inhibit coating implement heat resistant test (80 DEG C of temperature, humidity 60Rh% baking oven in it is quiet
Set 72 hours), Electromagnetic Interference inhibits the thickness of coating to thinning direction change after heat resistant test, but with heat resistant test before
On the basis of Electromagnetic Interference inhibits coating, change rate is lower than 1%.It is 60 or more that Effective permeability μ ', which is worth, and magnetic loss μ is " low
In 3.Effective permeability μ ' is measured under carrier frequency (13.4MHz) using impedance analyzer (Agilent Technology offer)
Inductance and resistance value, and calculate magnetic conductivity.
Measuring glossiness of the gained Electromagnetic Interference inhibition coating under 60 ° of incidence angle (- 60 °) using glossometer is
29%.Glossiness preferred scope is 20-50%.
Tensile strength using tensile tester measurement 0.16mm thickness, the sample of 50mm wide, 100mm long is 28MPa.It stretches
Intensity preferred scope is 20-50MPa.
Using abrasion meter in 50N/m2Electromagnetic Interference is worn under pressure and inhibits coating sample 30mins, and abrasion loss is small
In 5%, and gained coating is not observed there is a shed powder, soft magnetic powder is not fallen off when touching coating.
The Electromagnetic Interference of preparation inhibits magnetic conductivity, glossiness, tensile strength, the resistance, flexibility, shape holding of coating
Property shows more good result relative to embodiment 1.
Embodiment 3
By 80 parts per weight of thermoplastic's polyurethane, (ten thousand) Sigma-Aldrich preparation, average molecular weight 40 use organic solvent 200
The dissolution of parts by weight cyclohexanone is configured to glue, and by 500 parts by weight Fe-Si-Al alloy soft magnetic powder (specific surface areas
0.23m2/ g, anisotropy field 115Oe, resonant frequency fr ": 2000MHz) it is dispersed in glue, 570 parts by weight are then added
Cyclohexanone, 4 parts by weight organic curing agents 1, bis- (tert-butyl peroxy isopropyl) benzene of 3- and 4 parts by weight N, N '-metaphenylene spans come
Acid imide, 6 parts surfactant phthalic acid two (2- ethyl hexyl) esters, are made uniform coating.
Coating material temperature is adjusted to 25 DEG C, the PET high score for being laid in continuous rotation is coated with the coating speed of 2m/min
Coating is formed on sub- film support, and rotating excitation field orientation process is carried out to coating simultaneously, then at 85-155 DEG C of drying
Reason, coating are dried by 90 DEG C, 110 DEG C, 130 DEG C of three-level baking ovens, using 135 DEG C, 140 DEG C, 145 DEG C of fourth stages, the
Pyatyi, the 6th grade of baking oven finally pass through the 7th grade 150 DEG C of oven drying, and molding coating layer thickness is after being dried
0.1mm or so.
Above-mentioned molding coating is removed from PET macromolecule membrane supporter.Prepare the coating of 2 removings for their layers
It closes, the two sides of the laminates is obtained into PET clamping with peelable, the paper material conduct of 100 μ m-thicks is further configured on the two sides
Padded coaming, by two sides with two panels stainless steel plate clamp, with drum vulcanizer with the pressure of 7Mpa at 175 DEG C with 2m/min's
Curing rate is solidified, and is obtained Electromagnetic Interference and is inhibited coating.
To gained Electromagnetic Interference inhibit coating implement heat resistant test (80 DEG C of temperature, humidity 60Rh% baking oven in it is quiet
Set 72 hours), Electromagnetic Interference inhibits the thickness of coating to thinning direction change after heat resistant test, but with heat resistant test before
On the basis of Electromagnetic Interference inhibits coating, change rate is lower than 1%.It is 60 or more that Effective permeability μ ', which is worth, and magnetic loss μ is " low
In 1.5.Effective permeability μ ' is measured under carrier frequency (13.4MHz) using impedance analyzer (Agilent Technology offer)
Inductance and resistance value, and calculate magnetic conductivity.
Measuring glossiness of the gained Electromagnetic Interference inhibition coating under 60 ° of incidence angle (- 60 °) using glossometer is
32%.Glossiness preferred scope is 20-50%.
Tensile strength using tensile tester measurement 0.16mm thickness, the sample of 50mm wide, 100mm long is 28MPa.It stretches
Intensity preferred scope is 20-50MPa.
Using abrasion meter in 50N/m2Electromagnetic Interference is worn under pressure and inhibits coating sample 30mins, and abrasion loss is small
In 5%, and gained coating is not observed there is a shed powder, soft magnetic powder is not fallen off when touching coating.
The Electromagnetic Interference of preparation inhibits magnetic conductivity, glossiness, tensile strength, the resistance, flexibility, shape holding of coating
Property shows good result.
Embodiment 4
By 100 parts per weight of thermoplastic's polyurethane, (ten thousand) Sigma-Aldrich preparation, average molecular weight 40 use organic solvent
The dissolution of 270 parts by weight cyclohexanone is configured to glue, and by 500 parts by weight Fe-Si-Al alloy soft magnetic powder (specific surface areas
0.23m2/ g, anisotropy field 115Oe, resonant frequency fr ": 2000MHz) it is dispersed in glue, 500 parts by weight are then added
Cyclohexanone, 6 parts by weight organic curing agents 1, bis- (tert-butyl peroxy isopropyl) benzene of 3- and 6 parts by weight N, N '-metaphenylene spans come
Acid imide, 12 parts surfactant phthalic acid two (2- ethyl hexyl) esters, are made uniform coating.
Coating material temperature is adjusted to 25 DEG C, the PET high score for being laid in continuous rotation is coated with the coating speed of 2m/min
Coating is formed on sub- film support, and rotating excitation field orientation process is carried out to coating simultaneously, then at 85-155 DEG C of drying
Reason, coating are dried by 90 DEG C, 110 DEG C, 130 DEG C of three-level baking ovens, using 135 DEG C, 140 DEG C, 145 DEG C of fourth stages, the
Pyatyi, the 6th grade of baking oven finally pass through the 7th grade 150 DEG C of oven drying, and molding coating layer thickness is after being dried
0.1mm or so.
Above-mentioned molding coating is removed from PET macromolecule membrane supporter.The coating for preparing 1 removing, by coating
Peelable the PET clamping in two sides, further configure the paper materials of 100 μ m-thicks as padded coaming, by two on the two sides
Side is clamped with two panels stainless steel plate, is carried out with drum vulcanizer with the pressure of 8Mpa at 175 DEG C with the curing rate of 2m/min
Solidification obtains Electromagnetic Interference and inhibits coating.
To gained Electromagnetic Interference inhibit coating implement heat resistant test (80 DEG C of temperature, humidity 60Rh% baking oven in it is quiet
Set 72 hours), Electromagnetic Interference inhibits the thickness of coating to thinning direction change after heat resistant test, but with heat resistant test before
On the basis of Electromagnetic Interference inhibits coating, change rate is lower than 1%.It is 60 or more that Effective permeability μ ', which is worth, and magnetic loss μ is " low
In 1.5.Effective permeability μ ' is measured under carrier frequency (13.4MHz) using impedance analyzer (Agilent Technology offer)
Inductance and resistance value, and calculate magnetic conductivity.
Measuring glossiness of the gained Electromagnetic Interference inhibition coating under 60 ° of incidence angle (- 60 °) using glossometer is
32%.Glossiness preferred scope is 20-50%.
Tensile strength using tensile tester measurement 0.08mm thickness, the sample of 50mm wide, 100mm long is 22MPa.It stretches
Intensity preferred scope is 20-50MPa.
Using abrasion meter in 50N/m2Electromagnetic Interference is worn under pressure and inhibits coating sample 30mins, and abrasion loss is small
In 5%, and gained coating is not observed there is a shed powder, soft magnetic powder is not fallen off when touching coating.
The Electromagnetic Interference of preparation inhibits magnetic conductivity, glossiness, tensile strength, the resistance, flexibility, shape holding of coating
Property shows good result.
Embodiment 5
By 100 parts per weight of thermoplastic's polyurethane, (ten thousand) Sigma-Aldrich preparation, average molecular weight 40 use organic solvent
The dissolution of 270 parts by weight cyclohexanone is configured to glue, and by 500 parts by weight Fe-Si-Al alloy soft magnetic powder (specific surface areas
0.23m2/ g, anisotropy field 115Oe, resonant frequency fr ": 2000MHz) it is dispersed in glue, 500 parts by weight are then added
Cyclohexanone, 5 parts by weight organic curing agents 1, bis- (tert-butyl peroxy isopropyl) benzene of 3- and 5 parts by weight N, N '-metaphenylene spans come
Acid imide, 10 parts surfactant phthalic acid two (2- ethyl hexyl) esters, are made uniform coating.
Coating material temperature is adjusted to 25 DEG C, the PET high score for being laid in continuous rotation is coated with the coating speed of 2m/min
Coating is formed on sub- film support, and rotating excitation field orientation process is carried out to coating simultaneously, and coating passes through 85 DEG C, 95 DEG C, 105
DEG C three-level baking oven carries out drying and processing, using 115 DEG C, 120 DEG C, 130 DEG C of fourth stages, level V, the 6th grade of baking oven, finally
By the 7th grade 140 DEG C of oven drying, molding coating layer thickness is 0.1mm or so after being dried.
Above-mentioned molding coating is removed from PET macromolecule membrane supporter.The coating for preparing 1 removing, by coating
Peelable the PET clamping in two sides, further configure the paper materials of 100 μ m-thicks as padded coaming, by two on the two sides
Side with two panels stainless steel plate clamp, with drum vulcanizer with the pressure of 8.5Mpa at 175 DEG C with the curing rate of 0.3m/min
Solidified, obtains Electromagnetic Interference and inhibit coating.
To gained Electromagnetic Interference inhibit coating implement heat resistant test (80 DEG C of temperature, humidity 60Rh% baking oven in it is quiet
Set 72 hours), Electromagnetic Interference inhibits the thickness of coating to thinning direction change after heat resistant test, but with heat resistant test before
On the basis of Electromagnetic Interference inhibits coating, change rate is lower than 1%.It is 60 or more that Effective permeability μ ', which is worth, and magnetic loss μ is " low
In 1.5.Effective permeability μ ' is measured under carrier frequency (13.4MHz) using impedance analyzer (Agilent Technology offer)
Inductance and resistance value, and calculate magnetic conductivity.
Measuring glossiness of the gained Electromagnetic Interference inhibition coating under 60 ° of incidence angle (- 60 °) using glossometer is
37%.Glossiness preferred scope is 20-50%.
Tensile strength using tensile tester measurement 0.08mm thickness, the sample of 50mm wide, 100mm long is 22MPa.It stretches
Intensity preferred scope is 20-50MPa.
Using abrasion meter in 50N/m2Electromagnetic Interference is worn under pressure and inhibits coating sample 30mins, and abrasion loss is small
In 5%, and gained coating is not observed there is a shed powder, soft magnetic powder is not fallen off when touching coating.
The Electromagnetic Interference of preparation inhibits magnetic conductivity, glossiness, tensile strength, the resistance, flexibility, shape holding of coating
Property shows good result.
Embodiment 6
By 138 parts per weight of thermoplastic's polyurethane, (ten thousand) Sigma-Aldrich preparation, average molecular weight 40 use organic solvent
The dissolution of 322 parts by weight cyclohexanone is configured to glue, and by 500 parts by weight Fe-Si-Al alloy soft magnetic powder (specific surface areas
0.23m2/ g, anisotropy field 115Oe, resonant frequency fr ": 2000MHz) it is dispersed in glue, 764 parts by weight are then added
Cyclohexanone, 4.3 parts by weight organic curing agents 1, bis- (tert-butyl peroxy isopropyl) benzene of 3- and 4.3 parts by weight N, N '-metaphenylenes are double
Maleimide, 6 parts surfactant phthalic acid two (2- ethyl hexyl) esters, are made uniform coating.
Coating material temperature is adjusted to 25 DEG C, the PET high for being laid in continuous rotation is coated with the coating speed of 4.2m/min
Coating is formed on molecular film supporter, and simultaneously to coating carry out rotating excitation field orientation process, coating by 85 DEG C, 95 DEG C,
105 DEG C of three-level baking ovens carry out drying and processings, using 115 DEG C, 120 DEG C, 130 DEG C of fourth stages, level V, the 6th grade of baking oven,
The oven drying for finally passing through the 7th grade 140 DEG C, molding coating layer thickness is 0.1mm or so after being dried.
Above-mentioned molding coating is removed from PET macromolecule membrane supporter.The coating for preparing 1 removing, by coating
Peelable the PET clamping in two sides, further configure the paper materials of 100 μ m-thicks as padded coaming, by two on the two sides
Side with two panels stainless steel plate clamp, with drum vulcanizer with the pressure of 8.5Mpa at 175 DEG C with the curing rate of 2.5m/min
Solidified, obtains Electromagnetic Interference and inhibit coating.
To gained Electromagnetic Interference inhibit coating implement heat resistant test (80 DEG C of temperature, humidity 60Rh% baking oven in it is quiet
Set 72 hours), Electromagnetic Interference inhibits the thickness of coating to thinning direction change after heat resistant test, but with heat resistant test before
On the basis of Electromagnetic Interference inhibits coating, change rate is lower than 1%.It is 60 or more that Effective permeability μ ', which is worth, and magnetic loss μ is " low
In 1.5.Effective permeability μ ' is measured under carrier frequency (13.4MHz) using impedance analyzer (Agilent Technology offer)
Inductance and resistance value, and calculate magnetic conductivity.
Measuring glossiness of the gained Electromagnetic Interference inhibition coating under 60 ° of incidence angle (- 60 °) using glossometer is
42%.Glossiness preferred scope is 20-50%.
Tensile strength using tensile tester measurement 0.08mm thickness, the sample of 50mm wide, 100mm long is 29MPa.It stretches
Intensity preferred scope is 20-50MPa.
Using abrasion meter in 50N/m2Electromagnetic Interference is worn under pressure and inhibits coating sample 30mins, and abrasion loss is small
In 5%, and gained coating is not observed there is a shed powder, soft magnetic powder is not fallen off when touching coating.
The Electromagnetic Interference of preparation inhibits magnetic conductivity, glossiness, tensile strength, the resistance, flexibility, shape holding of coating
Property shows good result.
Embodiment 7
By 42 parts per weight of thermoplastic's polyurethane, (ten thousand) Sigma-Aldrich preparation, average molecular weight 40 use organic solvent 98
The dissolution of parts by weight cyclohexanone is configured to glue, and by 500 parts by weight Fe-Si-Al alloy soft magnetic powder (specific surface areas
0.23m2/ g, anisotropy field 115Oe, resonant frequency fr ": 2000MHz) it is dispersed in glue, 198 parts by weight are then added
Cyclohexanone, 4.2 parts by weight organic curing agents 1, bis- (tert-butyl peroxy isopropyl) benzene of 3- and 4.2 parts by weight N, N '-metaphenylenes are double
Maleimide, 10 parts surfactant phthalic acid two (2- ethyl hexyl) esters, uniform coating is made.
Coating material temperature is adjusted to 25 DEG C, the PET high score for being laid in continuous rotation is coated with the coating speed of 4m/min
Coating is formed on sub- film support, and rotating excitation field orientation process is carried out to coating simultaneously, and coating passes through 85 DEG C, 95 DEG C, 105
DEG C three-level baking oven carries out drying and processing, using 115 DEG C, 120 DEG C, 130 DEG C of fourth stages, level V, the 6th grade of baking oven, finally
By the 7th grade 140 DEG C of oven drying, molding coating layer thickness is 0.1mm or so after being dried.
Above-mentioned molding coating is removed from PET macromolecule membrane supporter.The coating for preparing 1 removing, by coating
Peelable the PET clamping in two sides, further configure the paper materials of 100 μ m-thicks as padded coaming, by two on the two sides
Side with two panels stainless steel plate clamp, with drum vulcanizer with the pressure of 8.5Mpa at 175 DEG C with the curing rate of 2.5m/min
Solidified, obtains Electromagnetic Interference and inhibit coating.
To gained Electromagnetic Interference inhibit coating implement heat resistant test (80 DEG C of temperature, humidity 60Rh% baking oven in it is quiet
Set 72 hours), Electromagnetic Interference inhibits the thickness of coating to thinning direction change after heat resistant test, but with heat resistant test before
On the basis of Electromagnetic Interference inhibits coating, change rate is lower than 1%.It is 70 or more that Effective permeability μ ', which is worth, and magnetic loss μ is " low
In 1.5.Effective permeability μ ' is measured under carrier frequency (13.4MHz) using impedance analyzer (Agilent Technology offer)
Inductance and resistance value, and calculate magnetic conductivity.
Measuring glossiness of the gained Electromagnetic Interference inhibition coating under 60 ° of incidence angle (- 60 °) using glossometer is
49%.Glossiness preferred scope is 20-50%.
Tensile strength using tensile tester measurement 0.08mm thickness, the sample of 50mm wide, 100mm long is 21MPa.It stretches
Intensity preferred scope is 20-50MPa.
Using abrasion meter in 50N/m2Electromagnetic Interference is worn under pressure and inhibits coating sample 30mins, and abrasion loss is small
In 8%, and gained coating is not observed there is a shed powder, soft magnetic powder is not fallen off when touching coating.
The Electromagnetic Interference of preparation inhibits magnetic conductivity, glossiness, tensile strength, the resistance, flexibility, shape holding of coating
Property shows good result.
Embodiment 8
By 90 parts per weight of thermoplastic's polyurethane, (ten thousand) Sigma-Aldrich preparation, average molecular weight 40 use organic solvent 270
The dissolution of parts by weight cyclohexanone is configured to glue, and by 500 parts by weight Fe-Si-Al alloy soft magnetic powder (specific surface areas
0.23m2/ g, anisotropy field 115Oe, resonant frequency fr ": 2000MHz) it is dispersed in glue, 135 parts by weight are then added
Cyclohexanone, 2.5 parts by weight organic curing agents 1, bis- (tert-butyl peroxy isopropyl) benzene of 3- and 2.5 parts by weight N, N '-metaphenylenes are double
Maleimide, 4 parts surfactant phthalic acid two (2- ethyl hexyl) esters, are made uniform coating.
Coating material temperature is adjusted to 25 DEG C, the PET high score for being laid in continuous rotation is coated with the coating speed of 3m/min
Coating is formed on sub- film support, and rotating excitation field orientation process is carried out to coating simultaneously, and coating passes through 85 DEG C, 95 DEG C, 105
DEG C three-level baking oven carries out drying and processing, using 115 DEG C, 120 DEG C, 130 DEG C of fourth stages, level V, the 6th grade of baking oven, finally
By the 7th grade 140 DEG C of oven drying, molding coating layer thickness is 0.1mm or so after being dried.
Above-mentioned molding coating is removed from PET macromolecule membrane supporter.The coating for preparing 1 removing, by coating
Peelable the PET clamping in two sides, further configure the paper materials of 100 μ m-thicks as padded coaming, by two on the two sides
Side with two panels stainless steel plate clamp, with drum vulcanizer with the pressure of 8Mpa at 175 DEG C with the curing rate of 2.5m/min into
Row solidification obtains Electromagnetic Interference and inhibits coating.
To gained Electromagnetic Interference inhibit coating implement heat resistant test (80 DEG C of temperature, humidity 60Rh% baking oven in it is quiet
Set 72 hours), Electromagnetic Interference inhibits the thickness of coating to thinning direction change after heat resistant test, but with heat resistant test before
On the basis of Electromagnetic Interference inhibits coating, change rate is lower than 1%.It is 70 or more that Effective permeability μ ', which is worth, and magnetic loss μ is " low
In 1.5.Effective permeability μ ' is measured under carrier frequency (13.4MHz) using impedance analyzer (Agilent Technology offer)
Inductance and resistance value, and calculate magnetic conductivity.
Measuring glossiness of the gained Electromagnetic Interference inhibition coating under 60 ° of incidence angle (- 60 °) using glossometer is
49%.Glossiness preferred scope is 20-50%.
Tensile strength using tensile tester measurement 0.08mm thickness, the sample of 50mm wide, 100mm long is 29MPa.It stretches
Intensity preferred scope is 20-50MPa.
Using abrasion meter in 50N/m2Electromagnetic Interference is worn under pressure and inhibits coating sample 30mins, and abrasion loss is small
In 6%, and gained coating is not observed there is a shed powder, soft magnetic powder is not fallen off when touching coating.
The Electromagnetic Interference of preparation inhibits magnetic conductivity, glossiness, tensile strength, the resistance, flexibility, shape holding of coating
Property shows good result.
Embodiment 9
By 84 parts per weight of thermoplastic's polyurethane, (ten thousand) Sigma-Aldrich preparation, average molecular weight 40 use organic solvent 196
The dissolution of parts by weight cyclohexanone is configured to glue, and by 500 parts by weight Fe-Si-Al alloy soft magnetic powder (specific surface areas
0.23m2/ g, anisotropy field 115Oe, resonant frequency fr ": 2000MHz) it is dispersed in glue, 204 parts by weight are then added
Cyclohexanone, 8 parts by weight organic curing agents 1, bis- (tert-butyl peroxy isopropyl) benzene of 3- and 8 parts by weight N, N '-metaphenylene spans come
Acid imide, 5 parts surfactant phthalic acid two (2- ethyl hexyl) esters, are made uniform coating.
Coating material temperature is adjusted to 25 DEG C, the PET high score for being laid in continuous rotation is coated with the coating speed of 3m/min
Coating is formed on sub- film support, and rotating excitation field orientation process is carried out to coating simultaneously, and coating passes through 85 DEG C, 95 DEG C, 105
DEG C three-level baking oven carries out drying and processing, using 115 DEG C, 120 DEG C, 130 DEG C of fourth stages, level V, the 6th grade of baking oven, finally
By the 7th grade 140 DEG C of oven drying, molding coating layer thickness is 0.1mm or so after being dried.
Above-mentioned molding coating is removed from PET macromolecule membrane supporter.The coating for preparing 1 removing, by coating
Peelable the PET clamping in two sides, further configure the paper materials of 100 μ m-thicks as padded coaming, by two on the two sides
Side with two panels stainless steel plate clamp, with drum vulcanizer with the pressure of 8Mpa at 175 DEG C with the curing rate of 2.5m/min into
Row solidification obtains Electromagnetic Interference and inhibits coating.
To gained Electromagnetic Interference inhibit coating implement heat resistant test (80 DEG C of temperature, humidity 60Rh% baking oven in it is quiet
Set 72 hours), Electromagnetic Interference inhibits the thickness of coating to thinning direction change after heat resistant test, but with heat resistant test before
On the basis of Electromagnetic Interference inhibits coating, change rate is lower than 1%.It is 70 or more that Effective permeability μ ', which is worth, and magnetic loss μ is " low
In 1.5.Effective permeability μ ' is measured under carrier frequency (13.4MHz) using impedance analyzer (Agilent Technology offer)
Inductance and resistance value, and calculate magnetic conductivity.
Measuring glossiness of the gained Electromagnetic Interference inhibition coating under 60 ° of incidence angle (- 60 °) using glossometer is
46%.Glossiness preferred scope is 20-50%.
Tensile strength using tensile tester measurement 0.08mm thickness, the sample of 50mm wide, 100mm long is 28MPa.It stretches
Intensity preferred scope is 20-50MPa.
Using abrasion meter in 50N/m2Electromagnetic Interference is worn under pressure and inhibits coating sample 30mins, and abrasion loss is small
In 3%, and gained coating is not observed there is a shed powder, soft magnetic powder is not fallen off when touching coating.
The Electromagnetic Interference of preparation inhibits magnetic conductivity, glossiness, tensile strength, the resistance, flexibility, shape holding of coating
Property shows good result.
Embodiment 10
By 82 parts per weight of thermoplastic's polyurethane, (ten thousand) Sigma-Aldrich preparation, average molecular weight 40 use organic solvent 196
The dissolution of parts by weight cyclohexanone is configured to glue, and by 500 parts by weight Fe-Si-Al alloy soft magnetic powder (specific surface areas
0.23m2/ g, anisotropy field 115Oe, resonant frequency fr ": 2000MHz) it is dispersed in glue, 204 parts by weight are then added
Cyclohexanone, 2 parts by weight phthalic acid two (2- ethyl hexyl) esters, 8 parts by weight organic curing agents 1, bis- (the tert-butyl peroxy isopropyls of 3-
Base) benzene and 8 parts by weight N, N '-meta-phenylene bismaleimides, 3 parts surfactant phthalic acid, two (2- ethyl
Oneself) ester, uniform coating is made.
Coating material temperature is adjusted to 25 DEG C, the PET high score for being laid in continuous rotation is coated with the coating speed of 3m/min
Coating is formed on sub- film support, and rotating excitation field orientation process is carried out to coating simultaneously, and coating passes through 85 DEG C, 95 DEG C, 105
DEG C three-level baking oven carries out drying and processing, using 115 DEG C, 120 DEG C, 130 DEG C of fourth stages, level V, the 6th grade of baking oven, finally
By the 7th grade 140 DEG C of oven drying, molding coating layer thickness is 0.1mm or so after being dried.
Above-mentioned molding coating is removed from PET macromolecule membrane supporter.The coating for preparing 1 removing, by coating
Peelable the PET clamping in two sides, further configure the paper materials of 100 μ m-thicks as padded coaming, by two on the two sides
Side with two panels stainless steel plate clamp, with drum vulcanizer with the pressure of 8Mpa at 175 DEG C with the curing rate of 2.5m/min into
Row solidification obtains Electromagnetic Interference and inhibits coating.
To gained Electromagnetic Interference inhibit coating implement heat resistant test (80 DEG C of temperature, humidity 60Rh% baking oven in it is quiet
Set 72 hours), Electromagnetic Interference inhibits the thickness of coating to thinning direction change after heat resistant test, but with heat resistant test before
On the basis of Electromagnetic Interference inhibits coating, change rate is lower than 1%.It is 70 or more that Effective permeability μ ', which is worth, and magnetic loss μ is " low
In 1.5.Effective permeability μ ' is measured under carrier frequency (13.4MHz) using impedance analyzer (Agilent Technology offer)
Inductance and resistance value, and calculate magnetic conductivity.
Measuring glossiness of the gained Electromagnetic Interference inhibition coating under 60 ° of incidence angle (- 60 °) using glossometer is
46%.Glossiness preferred scope is 20-50%.
Tensile strength using tensile tester measurement 0.08mm thickness, the sample of 50mm wide, 100mm long is 28MPa.It stretches
Intensity preferred scope is 20-50MPa.
Using abrasion meter in 50N/m2Electromagnetic Interference is worn under pressure and inhibits coating sample 30mins, and abrasion loss is small
In 3%, and gained coating is not observed there is a shed powder, soft magnetic powder is not fallen off when touching coating.
The Electromagnetic Interference of preparation inhibits magnetic conductivity, glossiness, tensile strength, the resistance, flexibility, shape holding of coating
Property shows good result.
Embodiment 11
By 84 parts per weight of thermoplastic's polyurethane, (ten thousand) Sigma-Aldrich preparation, average molecular weight 40 use organic solvent 196
The dissolution of parts by weight cyclohexanone is configured to glue, and by 500 parts by weight Fe-Si-Al alloy soft magnetic powder (specific surface areas
0.23m2/ g, anisotropy field 115Oe, resonant frequency fr ": 2000MHz) it is dispersed in glue, 174 parts by weight are then added
Cyclohexanone, 30 parts by weight phthalic acid two (2- ethyl hexyl) esters, 2 parts by weight phthalic acid two (2- ethyl hexyl) esters, 8 weight
Part organic curing agent 1, bis- (tert-butyl peroxy isopropyl) benzene of 3- and 8 parts by weight N, N '-meta-phenylene bismaleimides, 5 weight
Two (2- ethyl hexyl) ester of part surfactant phthalic acid, is made uniform coating.
Coating material temperature is adjusted to 25 DEG C, the PET high score for being laid in continuous rotation is coated with the coating speed of 3m/min
Coating is formed on sub- film support, and rotating excitation field orientation process is carried out to coating simultaneously, and coating passes through 85 DEG C, 95 DEG C, 105
DEG C three-level baking oven carries out drying and processing, using 115 DEG C, 120 DEG C, 130 DEG C of fourth stages, level V, the 6th grade of baking oven, finally
By the 7th grade 140 DEG C of oven drying, molding coating layer thickness is 0.1mm or so after being dried.
Above-mentioned molding coating is removed from PET macromolecule membrane supporter.The coating for preparing 1 removing, by coating
Peelable the PET clamping in two sides, further configure the paper materials of 100 μ m-thicks as padded coaming, by two on the two sides
Side with two panels stainless steel plate clamp, with drum vulcanizer with the pressure of 8Mpa at 175 DEG C with the curing rate of 2.5m/min into
Row solidification obtains Electromagnetic Interference and inhibits coating.
To gained Electromagnetic Interference inhibit coating implement heat resistant test (80 DEG C of temperature, humidity 60Rh% baking oven in it is quiet
Set 72 hours), Electromagnetic Interference inhibits the thickness of coating to thinning direction change after heat resistant test, but with heat resistant test before
On the basis of Electromagnetic Interference inhibits coating, change rate is lower than 1%.It is 70 or more that Effective permeability μ ', which is worth, and magnetic loss μ is " low
In 1.5.Effective permeability μ ' is measured under carrier frequency (13.4MHz) using impedance analyzer (Agilent Technology offer)
Inductance and resistance value, and calculate magnetic conductivity.
Measuring glossiness of the gained Electromagnetic Interference inhibition coating under 60 ° of incidence angle (- 60 °) using glossometer is
46%.Glossiness preferred scope is 20-50%.
Tensile strength using tensile tester measurement 0.08mm thickness, the sample of 50mm wide, 100mm long is 28MPa.It stretches
Intensity preferred scope is 20-50MPa.
Using abrasion meter in 50N/m2Electromagnetic Interference is worn under pressure and inhibits coating sample 30mins, and abrasion loss is small
In 3%, and gained coating is not observed there is a shed powder, soft magnetic powder is not fallen off when touching coating.
The Electromagnetic Interference of preparation inhibits magnetic conductivity, glossiness, tensile strength, the resistance, flexibility, shape holding of coating
Property shows good result.
Although hereinbefore by reference to some embodiments, invention has been described, of the invention not departing from
In the case where range, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as not
There are structural conflict, the various features in presently disclosed each embodiment can be combined with each other by any way
It uses, the description for not carrying out exhaustive to the case where these combinations in the present specification is for omission length and to economize on resources
Consider.Therefore, the invention is not limited to specific embodiments disclosed herein, but including falling within the scope of the appended claims
All technical solutions.
Claims (12)
1. a kind of Electromagnetic Interference inhibits coating, which is characterized in that it includes soft magnetic powder, thermoplastic polyurethane, You Jigu
It by weight percentage include soft magnetic powder 29%~59% in agent and the organic solvent coating, thermoplastic polyurethane 5%~
9%, organic curing agent 0.5%~1.6% and organic solvent 35%~62%.
2. Electromagnetic Interference according to claim 1 inhibits coating, it is characterised in that: the soft magnetic powder includes Fe-
Si-Al alloy, Fe-Cr-Al-Si alloy, Fe-Ni alloy/C, Fe-Cu-Si alloy, Fe-Si alloy, Fe-Si-B-Cu-Nb alloy,
At least one of Fe-Si-Cr-Ni alloy, Fe-Si-Cr alloy, Fe-Si-Al-Ni-Cr alloy, ferrite.
3. Electromagnetic Interference according to claim 1 inhibits coating, it is characterised in that: the molecule of the thermoplastic polyurethane
Amount is in 10000-1000000g/mol.
4. Electromagnetic Interference according to claim 1 inhibits coating, it is characterised in that: the organic curing agent includes 1,3-
Bis- (tert-butyl peroxy isopropyl) benzene, N, N '-meta-phenylene bismaleimide, Triallyl isocyanurate, isocyanation esterification
Close object, cumyl peroxide, diacyl peroxide, tert-alkyl peroxy acid esters, alkyl hydroperoxide, dialkyl group peroxidating
At least one of object, dialkyl group peroxy ketal.
5. Electromagnetic Interference according to claim 1 inhibits coating, it is characterised in that: the organic solvent includes hexamethylene
Ketone, tetrahydrofuran, acetone, methyl ethyl ketone, methyl iso-butyl ketone (MIBK), toluene, dimethylbenzene, benzene, ethyl acetate, n-butyl acetate,
At least one of dioxane.
6. Electromagnetic Interference according to claim 1 inhibits coating, it is characterised in that: in the coating by weight percentage
It further include surfactant 0.2%~3%.
7. Electromagnetic Interference according to claim 6 inhibits coating, it is characterised in that: the surfactant selects adjacent benzene
Dioctyl phthalate two (2- ethyl hexyl) ester, graphite, lecithin, molybdenum disulfide, tungsten disulfide, carbon number be 2-26 fatty acid and this
Aliphatic ester, terpene compound class and their oligomer that the alcohol that a little fatty acid and carbon number are 2-26 is constituted, silicone oil,
At least one of dioctyl adipate.
8. Electromagnetic Interference according to claim 1 inhibits coating, it is characterised in that: the thermoplastic polyurethane is with organic
Solvent dissolution be configured to solid content be 30% solution with store with it is spare.
9. the preparation method that a kind of Electromagnetic Interference inhibits coating, which is characterized in that successively the following steps are included:
(1) any Electromagnetic Interference inhibition coating coating of claim 1-8 is laid in the macromolecule membrane of continuous rotation
Coating is formed on supporter, and rotating excitation field orientation process is carried out to coating simultaneously, is then dried at 85-155 DEG C, molding
Coating layer thickness be 0.06mm-0.2mm；
(2) it post-processes: above-mentioned molding coating is removed from macromolecule membrane supporter, and by least one layer of molding coating
Curing process is carried out, for solidification temperature range at 170-200 DEG C, solidifying pressure range obtains Electromagnetic Interference suppression in 6-8.5MPa
Coating processed.
10. Electromagnetic Interference according to claim 9 inhibits the preparation method of coating it is characterized by: described in step 1
Being dried is gradient temperature-gradient method process, and the velocity interval of the coating is in 2-4.2m/min.
11. Electromagnetic Interference according to claim 9 inhibits the preparation method of coating it is characterized by: solid described in step 2
Change the velocity interval of processing in 0.3-2.5m/min.
12. a kind of Electromagnetic Interference using the described in any item method preparations of claim 9~11 inhibits coating.
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| CN110484112B (en) | 2021-12-28 |
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