CN104039121A - Wave-absorbing magnetic-conductive shielding film and manufacture method thereof - Google Patents
Wave-absorbing magnetic-conductive shielding film and manufacture method thereof Download PDFInfo
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- CN104039121A CN104039121A CN201310075143.4A CN201310075143A CN104039121A CN 104039121 A CN104039121 A CN 104039121A CN 201310075143 A CN201310075143 A CN 201310075143A CN 104039121 A CN104039121 A CN 104039121A
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Abstract
The invention discloses a wave-absorbing magnetic-conductive shielding film and a manufacture method thereof. The wave-absorbing magnetic-conductive shielding film has a layered structure. Through reasonable superposition of a wave-absorbing layer, a magnetic conductive layer and a shielding layer, the wave-absorbing magnetic-conductive shielding film has a quite good shielding effect for electromagnetic waves with a frequency of 100MHz to 10GHz, and the electromagnetic shielding efficiency can reach more than 80DB. The preparation method is carried out by use of a mode of combining routine coating and magnetron sputtering, the operation is simple, and a formed film layer is light, thin and compact. Therefore, the wave-absorbing magnetic-conductive shielding film and the manufacture method are applied to various electronic products and communication devices.
Description
Technical field
The invention belongs to the communications field, particularly a kind of waveguide magnetic shield film and preparation method thereof of inhaling.
Background technology
The various electronic products of communication field and equipment can form many electromagnetic wave phase mutual interference in space, not only self and environment are caused damage, and also make the transmission that realizes high frequency, high speed become difficulty.Electromagnetic shielding film can trapped electromagnetic wave in the mutual propagation between electronic product module and between electronic product and environment, reduce the destruction that electromagnetic interference causes, day by day extensive in the application of communication field.
But there is the defect of following two aspects in traditional electromagnetic shielding film: first, aspect raw material, select shielding material to realize shielding action by reflection electromagnetic wave, but the electromagnetic wave of its reflection does not disappear or decay, thereby may cause secondary electromagnetic pollution; Although and select the absorbing material electromagnetic wave that can absorb and decay, common has good shielding action to a certain narrower frequency range.The second, aspect plated film mode, generally adopt sintering processing to realize ferrite plated film, the screened film thickness obtaining is larger, is difficult for bending, thereby has in the use limitation.
" thin, light, wide, height " (thin thickness, quality is light, frequency range is wide, intensity is high) become the development trend of Modern New shielding instrument, and traditional electromagnetic shielding film obviously cannot meet people's needs.
Summary of the invention
The object of the invention is to overcome the problem of above prior art, a kind of waveguide magnetic shield film and preparation method thereof of inhaling is provided, by inhaling the reasonable stack of ripple layer, magnetic layer and screen, farthest widen maskable frequency range, and electromagnetic wave in absorbing environmental and in electronic device, the suction waveguide magnetic shield film that simultaneously adopts method of the present invention to make is simple and direct frivolous, easy to use, can be mass, be applicable to various electronic products and communication equipment.
For achieving the above object, one aspect of the present invention provides a kind of waveguide magnetic shield film of inhaling, and comprises carrier rete, suction ripple layer, conductive adhesive layer and the protective film of stack successively, wherein between suction ripple layer and conductive adhesive layer, comprises magnetic layer and screen.
Preferably, described magnetic layer and screen are to superpose according to the order of magnetic layer, screen on the surface of described suction ripple layer.
Preferred, described one is inhaled waveguide magnetic shield film, is made up of the carrier rete superposeing successively, suction ripple layer, magnetic layer, screen, conductive adhesive layer and protective film.
Wherein, described magnetic layer and screen can also, on the surface of described suction ripple layer according to the order stack of screen, magnetic layer, preferably, be made up of the carrier rete superposeing successively, suction ripple layer, screen, magnetic layer, conductive adhesive layer and protective film.
Wherein, between suction ripple layer and conductive adhesive layer, can also comprise and inhale ripple layer.Preferably, formed by the carrier rete superposeing successively, suction ripple layer, magnetic layer, screen, suction ripple layer, magnetic layer, screen, conductive adhesive layer and protective film.
Wherein, described carrier rete comprises the basement membrane layer and the following layer that is attached to its corona pre-treatment surface through corona pre-treatment, and wherein the thickness of following layer is 0.1 μ m-5 μ m.
Particularly, described basement membrane layer is the polyester films such as PETG (PET), PEN (PEN), polyimides (PI), polyethylene (PE), polypropylene (PP), described following layer is the dope layer that the resins such as acrylic acid, polyester, polyurethane, organosilicon, Organic fluoride or its modified resin form through organic solvent diluting, and described organic solvent is the volatile organic solvents such as butanone, acetone, ethyl ester, butyl ester, polymethyl methacrylate (PMA).
Can make antiradar coatings be easier to apply with the carrier rete of following layer, thereby form more stable combination with suction ripple layer.
Wherein, described suction ripple layer is the rete of being made up of antiradar coatings, the thickness of inhaling ripple layer is 2 μ m-50 μ m, described antiradar coatings comprises resin, ferrite, inorganic filler and organic solvent, wherein the content of resin is 10wt%-40wt%, ferritic content is 5wt%-40wt%, and the content of inorganic filler is 4wt%-20wt%, and it is 30%-60% that the consumption of adjustment organic solvent makes the solid content of antiradar coatings.
Especially, described resin is resin or its modified resin such as organosilicon, Organic fluoride, epoxy resin, acrylic acid, polyurethane, polyester, described ferrite is iron and its oxi or nitride, ferroalloy and oxide thereof or nitride, granularity is at 0.1 μ m-2 μ m, described inorganic filler is one or more in barium sulfate, calcium carbonate, talcum powder, mica, wollastonite, kaolin, aluminium hydroxide, magnesium hydroxide, and described solvent is the volatile organic solvents such as butanone, acetone, ethyl ester, butyl ester or PMA.
Inhale ripple layer and can effectively external electromagnetic waves be directed into inner ferrite layer, play the effect that absorbs external electromagnetic waves.
Wherein, described magnetic layer is taking ferrite as target, the rete forming on described suction ripple layer by magnetron sputtering, and the thickness of magnetic layer is 0.2 μ m-2 μ m.
Particularly described ferrite is iron and its oxi or nitride, ferroalloy and oxide thereof or nitride.
Ferrite has higher magnetic permeability in the time of high frequency, thereby the electromagnetic wave of magnetic conduction rete energy direct high-frequency section that ferrite forms propagates to screen, and simultaneously because ferrite has higher resistivity, the eddy current loss producing when use is also less.
Wherein, described screen is taking metal or its alloy as target, the rete forming on described magnetic layer by magnetron sputtering, and the thickness of screen is 0.1 μ m-2 μ m.
Particularly described metal or its alloy is gold, silver, nickel, copper, cadmium, chromium, zinc, iron etc. or its alloy.
At the electromagnetic wave part energy transform into heat energy of inhaling ripple layer, magnetic layer conduction, part is released, and screen can receive the electromagnetic wave of release effectively.
Wherein, described conductive adhesive layer is the rete of being made up of conducting resinl coating, the thickness of conductive adhesive layer is 5 μ m-50 μ m, can be isotropic conductive adhesive layer or anisotropy conductiving glue layer, described conducting resinl coating comprises matrix resin, conducting particles, inorganic filler, curing agent and organic solvent, wherein conducting particles can be to have horizontal or machine-direction oriented conducting particles, can be also all-directional conductive particle; Wherein, the content of matrix resin is 10wt%-40wt%, and the content of conducting particles is 10wt%-50wt%, and the content of inorganic filler is 4wt%-20wt%, the content of curing agent is 1wt%-5wt%, and it is 25%-60% that the consumption of adjustment organic solvent makes the solid content of conducting resinl coating.
Particularly, described matrix resin is organosilicon, Organic fluoride, epoxy resin, acrylic acid, polyurethane, polyester or its modified resin; Described conducting particles is gold, silver, nickel, copper, cadmium, chromium, zinc, iron etc. or its alloy; Described inorganic filler is one or more in barium sulfate, calcium carbonate, talcum powder, mica, wollastonite, kaolin, aluminium hydroxide, magnesium hydroxide, is preferably barium sulfate; Described curing agent is one or more in isocyanates, acid anhydrides, amino resins, and described solvent is the volatile organic solvents such as butanone, acetone, ethyl ester, butyl ester or PMA.
Conductive adhesive layer can be by the electromagnetic wave of each layer of Assimilation and conductivity by being flexible coupling or thermosetting connection ground connection.
Wherein, described protective film can be the polyester films such as PET, PEN, PI, PE, PP.
The present invention provides a kind of manufacture method of inhaling waveguide magnetic shield film on the other hand; comprise: adhere to following layer in basement membrane layer through a side surface of corona pre-treatment; form carrier rete, then superpose successively on the surface of described following layer and inhale ripple layer, functional layer, conductive adhesive layer and protective film.
Wherein, described functional layer comprises magnetic layer and screen, optionally comprises and inhales ripple layer.
Preferably, described a kind of manufacture method of inhaling waveguide magnetic shield film, comprises the following steps:
1) carry out corona pre-treatment at basement membrane layer one side surface, and adhere to following layer at the side surface through corona pre-treatment, form carrier rete, wherein the thickness of following layer is 0.1 μ m-5 μ m;
2) at the surface-coated antiradar coatings of described following layer, form and inhale ripple layer, the thickness of inhaling ripple layer is 2 μ m-50 μ m;
3) on the surface of described suction ripple layer, taking ferrite as target, carry out magnetron sputtering plating, form magnetic layer, the thickness of magnetic layer is 0.1 μ m-2 μ m;
4) on the surface of described magnetic layer, taking metal or its alloy as target, carry out magnetron sputtering plating, form screen, the thickness of screen is 0.1 μ m-2 μ m;
5) at the surface-coated conducting resinl coating of described screen, form conductive adhesive layer, the thickness of conductive adhesive layer is 5 μ m-50 μ m;
6) enclose protective film at a side surface of described conductive adhesive layer.
The suction waveguide magnetic shield film of making is according to the method described above made up of the carrier rete superposeing successively, suction ripple layer, magnetic layer, screen, conductive adhesive layer and protective film.When use, first protective film is torn, conductive adhesive film aspect is enclosed to circuit board hot pressing or cold bonding, then remove carrier film, make to inhale ripple layer and expose.
Wherein, the basement membrane layer described in step 1) is the polyester films such as PET, PEN, PI, PE, PP.
Wherein, in the corona pre-treatment process described in step 1), voltage is 5000-20000V, and the surface tension of basilar memebrane after treatment reaches 35-60 dyne, can strengthen the adhesion of basilar memebrane and following layer coating.
Wherein, the following layer that adheres to described in step 1) refers to that adopting common fabrography or nick version to apply following layer coating forms following layer, particularly, described following layer coating comprises resin and organic solvent, especially, described resin is resin or its modified resin such as acrylic acid, polyester, polyurethane, organosilicon, Organic fluoride, and described organic solvent is the volatile organic solvents such as butanone, acetone, ethyl ester, butyl ester, PMA.Wherein, the content of resin is 5wt%-40wt%.
Wherein, when step 2) thickness of described suction ripple layer is while being 2 μ m-10 μ m, can select the modes such as net roller, rubber roll, nick version to apply; When step 2) thickness of described suction ripple layer is while being 10 μ m-50 μ m, the mode that can select scraper or slit to extrude applies.
Wherein, step 2) described antiradar coatings comprises resin, ferrite, inorganic filler and organic solvent, wherein the content of resin is 10wt%-40wt%, ferritic content is 5wt%-40wt%, the content of inorganic filler is 4wt%-20wt%, add organic solvent, and the solid content of controlling antiradar coatings is 30-60%.
Wherein, step 2) described resin is resin or its modified resin such as organosilicon, Organic fluoride, epoxy resin, acrylic acid, polyurethane, polyester, described ferrite is iron and its oxi or nitride, ferroalloy and oxide thereof or nitride, granularity is at 0.1 μ m-2 μ m, described inorganic filler is one or more in barium sulfate, calcium carbonate, talcum powder, mica, wollastonite, kaolin, aluminium hydroxide, magnesium hydroxide, and described solvent is the volatile organic solvents such as butanone, acetone, ethyl ester, butyl ester or PMA.
Wherein, the ferrite described in step 3) is iron and its oxi or nitride, ferroalloy and oxide thereof or nitride.Particularly, the magnetron sputtering that can adopt common power to realize when taking iron as target, the magnetron sputtering that need adopt radio-frequency power supply to realize during as target taking the oxide of iron or nitride.
Wherein, the metal described in step 4) can be gold, silver, nickel, copper, cadmium, chromium, zinc, iron etc. or its alloy.Particularly, described magnetron sputtering, can adopt common power or radio-frequency power supply to realize, and preferably adopts radio-frequency power supply.
Wherein, the coating described in step 5) can adopt scraper for coating shape or slit the conventional coating method such as to extrude.
Wherein, conducting resinl coating described in step 5) comprises matrix resin, conducting particles, inorganic filler, curing agent and organic solvent, wherein the content of matrix resin is 10wt%-40wt%, the content of conducting particles is 10wt%-50wt%, the content of inorganic filler is 4wt%-20wt%, the content of curing agent is 1wt%-5wt%, and it is 25%-60% that the consumption of adjustment organic solvent makes the solid content of conducting resinl coating.
Particularly, the matrix resin described in step 5) is organosilicon, Organic fluoride, epoxy resin, acrylic acid, polyurethane, polyester or its modified resin; Described conducting particles is gold, silver, nickel, copper, cadmium, chromium, zinc, iron etc. or its alloy; Described inorganic filler is one or more in barium sulfate, calcium carbonate, talcum powder, mica, wollastonite, kaolin, aluminium hydroxide, magnesium hydroxide; Described curing agent is one or more in isocyanates, acid anhydrides, amino resins, and described solvent is the volatile organic solvents such as butanone, acetone, ethyl ester, butyl ester or PMA.As required, can also add levelling agent, defoamer, dispersant etc. to conducting resinl.
Wherein, the protective film described in step 6) can be the polyester films such as PET, PEN, PI, PE, PP.
The manufacture method of described suction waveguide magnetic shield film can also be: superpose successively on the surface of carrier rete and inhale ripple layer, screen, magnetic layer, conductive adhesive layer and protective film; Or superpose successively on the surface of carrier rete suction ripple layer, screen, magnetic layer, suction ripple layer, screen, magnetic layer, conductive adhesive layer and protective film.
The present invention compared with prior art tool has the following advantages and effect:
1. the suction waveguide magnetic shield film of made of the present invention, not only to external world and the inner electromagnetic interference producing of electronic devices and components there is good shield effectiveness, the electromagnetic wave in can also absorbing environmental, stops internal electromagnetic leaked wave, reduces electromagnetic pollution, is beneficial to environmental protection.
2. the functional layer of the suction waveguide magnetic shield film of made of the present invention, inhales ripple layer, magnetic layer, screen, conductive adhesive layer, and replacing order or repeatedly stack are according to specific needs applied widely, and multilayer realizes can realize better screening effectiveness.Especially, screen capable of choosing multiple metal plated film repeatedly, to realize shield effectiveness good in wider frequency range.
3. when the present invention makes magnetic conduction rete and screen, adopt magnetron sputtering mode to realize, simple to operate, safe and convenient, suitability for industrialized is promoted, the frivolous even compact of institute's film plating layer, softness is bent, tensile property is excellent, can paste on any electronic devices and components surface, simple to operate, shield effectiveness is good.
Brief description of the drawings
Fig. 1 is the structural representation of the suction waveguide magnetic shield film of the embodiment of the present invention 1 and 3.
Fig. 2 is the structural representation of the suction waveguide magnetic shield film of the embodiment of the present invention 2.
Fig. 3 is the structural representation of the suction waveguide magnetic shield film of the embodiment of the present invention 4.
Embodiment
Further describe the present invention below in conjunction with specific embodiments and the drawings, advantage and disadvantage of the present invention will be more clear along with description.But embodiment is only exemplary, scope of the present invention is not formed to any restriction.It will be understood by those skilled in the art that lower without departing from the spirit and scope of the present invention and can the details of technical solution of the present invention and form be modified or be replaced, but these amendments and replacement all fall within the scope of protection of the present invention.
Embodiment 1
As shown in Figure 1, suction waveguide magnetic shield film of the present invention comprises successively from inside to outside carrier rete 1, inhales ripple layer 2, magnetic layer 3, screen 4, conductive adhesive layer 5 and protective film 6.
1. make carrier rete:
1) selecting thickness is 50 μ m, and the PET polyester film of width 600mm, as basement membrane layer, carries out corona pre-treatment to a side surface of this rete, and wherein, in preprocessing process, voltage is 20000V, and its surface tension reaches 60 dyne; Then adopting common fabrography to apply following layer through a side surface of corona pre-treatment, applying post-drying and form carrier rete, bake out temperature is 150 DEG C, and be 50 seconds drying time.
Wherein, the coating of described formation following layer selects epoxy resin and ethyl ester to form according to the weight ratio configuration of 40:60, and the thickness of following layer is 2.5 μ m.
2. ripple layer is inhaled in stack:
Adopt slit extrusion way to apply antiradar coatings on the surface of described following layer, apply post-drying and form suction ripple layer, the thickness of inhaling ripple layer is 25 μ m, and drying time is 2 minutes, and bake out temperature is 160 DEG C.
Wherein, the component of described antiradar coatings and content are:
Organic siliconresin 10%
Iron oxide 40%
Barium sulfate 4%
Ethyl ester 46%
Wherein, in coating, solid matter is Powdered, and particle mean size is lower than 10 μ m, and its content is 44%.According at the uniform velocity stirring and get final product after aforementioned proportion configuration coating.
3. stack magnetic layer:
Magnetron sputtering is carried out on surface to described suction ripple layer, the temperature of controlling the vacuum chamber of magnetron sputtering apparatus is-250 DEG C, under high-purity argon gas environment, adopt the magnetron sputtering mode of radio-frequency power supply support to adopt iron oxide (purity is greater than 99%) target, control target chamber temperature below 100 DEG C, at the surface deposition plated film of described suction ripple layer, form magnetic layer, the thickness of magnetic layer is 1 μ m.
Wherein, the condition of work of magnetron sputtering is as follows:
Working gas: high-purity argon gas (99.99%)
Operating air pressure: 20 × 10
-3MmPa
Sputtering current: 10A
Power: 600KW
Sputtering rate: 5m/min
Wherein, working gas is except argon gas, and other gases are all applicable to the present invention as helium, nitrogen etc.
4. stack screen:
Magnetron sputtering is carried out in the surface of described magnetic layer, adopt the process conditions identical with step 3, taking corronil (57:43) as target, at described magnetic layer surface deposition plated film, form screen, the thickness of screen is 1 μ m.
5. stack conductive adhesive layer:
Adopt slit extrusion way coated with conductive glue coating on the surface of described screen, form conductive adhesive layer, the thickness of conductive adhesive layer is 50 μ m.
Wherein, the composition of described conducting resinl coating and content are:
Wherein, in coating, solid matter is Powdered, and particle mean size is lower than 10 μ m, and its content is 60%.Particularly, described conducting particles is that nickel, copper, iron are according to the ratio mixing of 1:1:1.
After configuring according to aforementioned proportion, fully disperse to stir, leave standstill after 1 hour and prepare to apply, apply and adopt scraper for coating mode, 160 DEG C of baking temperatures, 2 minutes.
6. stack protective film:
Enclosing thickness on the surface of described conductive adhesive layer is 50 μ m, and the PET polyester film of width 600mm is as protective film.When use, first protective film is torn, conductive adhesive film aspect is enclosed to circuit board hot pressing or cold bonding, finally remove carrier film.
According to standard SJ20524-1995 " method of testing of Materials ' Shielding Effectiveness ", the screening effectiveness of the suction waveguide magnetic shield film making according to the method to be tested, test result is in table 1.
Embodiment 2
As shown in Figure 1, suction waveguide magnetic shield film of the present invention comprises successively from inside to outside carrier rete 1, inhales ripple layer 2, magnetic layer 3, screen 4, conductive adhesive layer 5 and protective film 6.
1. make carrier rete:
1) selecting thickness is 50 μ m, and the PEN polyester film of width 600mm, as basement membrane layer, carries out corona pre-treatment to a side surface of this rete, and wherein, in preprocessing process, voltage is 5000V, and its surface tension reaches 35 dyne; Then adopting nick platemaking technology to apply following layer through a side surface of corona pre-treatment, applying post-drying and form carrier rete, bake out temperature is 200 DEG C, and be 60 seconds drying time.
Wherein, the coating of described formation following layer selects epoxy resin and ethyl ester to form according to the weight ratio configuration of 5:95, and the thickness of following layer is 0.1 μ m.
2. ripple layer is inhaled in stack:
Adopt rubber roll mode to apply antiradar coatings on the surface of described following layer, apply post-drying and form suction ripple layer, the thickness of inhaling ripple layer is 2 μ m, and drying time is 2.5 minutes, and bake out temperature is 160 DEG C.
Wherein, the component of described antiradar coatings and content are:
Organic fluorine 10%
Iron oxide 5%
Barium sulfate 15%
Ethyl ester 70%
Wherein, in coating, solid matter is Powdered, and particle mean size is lower than 10 μ m, and its content is 30%.According at the uniform velocity stirring and get final product after aforementioned proportion configuration coating.
3. stack screen:
Magnetron sputtering is carried out on surface to described suction ripple layer, and except adopting silver-nickel (30:70) plated film, the thickness of screen is 0.1 μ m, and sputtering rate is outside 10m/min, and all the other are identical with the step 4 of embodiment 1.
4. stack magnetic layer:
Magnetron sputtering is carried out in the surface of described screen, the temperature of controlling vacuum chamber is-250 DEG C, under high-purity argon gas environment, adopt the magnetron sputtering mode of radio-frequency power supply support to adopt pure iron target (purity is greater than 99%), control target chamber temperature below 100 DEG C, at the surface deposition plated film of described suction ripple layer, form magnetic layer, the thickness of magnetic layer is 2 μ m.
Wherein, all the other are identical with embodiment 1 step 3 except sputtering rate is 1m/min for the condition of work of magnetron sputtering.
5. stack conductive adhesive layer:
Adopt scraper coating method coated with conductive glue coating on the surface of described screen, form conductive adhesive layer, the thickness of conductive adhesive layer is 45 μ m.
Wherein, the composition of described conducting resinl coating and content are:
Wherein, in coating, solid matter is Powdered, and particle mean size is lower than 10 μ m, and its content is 58%.Particularly, described conducting particles is that nickel, copper, iron are according to the ratio mixing of 1:1:1.
After configuring according to aforementioned proportion, fully disperse to stir, leave standstill after 1 hour and prepare to apply, apply and adopt scraper for coating mode, 160 DEG C of baking temperatures, 2 minutes.
6. stack protective film:
Enclosing thickness on the surface of described conductive adhesive layer is 50 μ m, and the PI polyester film of width 600mm is as protective film.When use, first protective film is torn, conductive adhesive film aspect is enclosed to circuit board hot pressing or cold bonding, finally remove carrier film.
According to standard SJ20524-1995 " method of testing of Materials ' Shielding Effectiveness ", the screening effectiveness of the suction waveguide magnetic shield film making according to the method to be tested, test result is in table 1.
Embodiment 3
As shown in Figure 1, suction waveguide magnetic shield film of the present invention comprises successively from inside to outside carrier rete 1, inhales ripple layer 2, magnetic layer 3, screen 4, conductive adhesive layer 5 and protective film 6.
1. make carrier rete:
Except voltage in corona pre-treatment process is 10000V, make its surface tension reach 40 dyne, bake out temperature is 180 DEG C, and in following layer, the content of resin is 20%, and the thickness of following layer is that outside 5 μ m, all the other are identical with embodiment 1.
2. ripple layer is inhaled in stack:
Continue to adopt rubber roll mode to apply antiradar coatings on the surface of described following layer, coating thickness is 50 μ m, applies post-drying and forms suction ripple layer, and drying time is 5 minutes, and bake out temperature is 200 DEG C.
Wherein, the component of described antiradar coatings and content are:
Polyurethane resin 40%
Iron oxide 10%
Talcum powder 10%
Acetone 40%
Wherein, in coating, solid matter is Powdered, and particle mean size is lower than 10 μ m, and its content is 60%.According at the uniform velocity stirring and get final product after aforementioned proportion configuration coating.
3. stack magnetic layer:
Except selecting tetrazotization iron (purity is greater than 99%) as target, the thickness of magnetic layer is 0.2 μ m, and sputtering rate is outside 9m/min, and all the other are that embodiment 1 is identical.
4. stack screen:
Except the thickness of screen is 2 μ m, sputtering rate is that, outside 1m/min, all the other are identical with embodiment 1.
5. stack conductive adhesive layer:
Adopt net roller mode coated with conductive glue coating on the surface of described screen, form conductive adhesive layer, the thickness of conductive adhesive layer is 5 μ m.
Wherein, the composition of described conducting resinl coating and content are:
Except bake out temperature is 130 DEG C, all the other operations are identical with embodiment 1, form conductive adhesive layer.
6. stack protective film:
Operate identical with embodiment 1.
According to standard SJ20524-1995 " method of testing of Materials ' Shielding Effectiveness ", the screening effectiveness of the suction waveguide magnetic shield film making according to the method to be tested, test result is in table 1.
Embodiment 4
For strengthening the screening effectiveness of inhaling waveguide magnetic shield film; can repeatedly superpose inhaling ripple layer, magnetic layer and screen; as shown in 2, this suction waveguide magnetic shield film comprises successively from inside to outside carrier rete 1, suction ripple layer 2, magnetic layer 3, screen 4, inhales ripple layer 5, magnetic layer 6, screen 7, conductive adhesive layer 8 and protective film 9.
1-4. operation is identical with embodiment 1.
5. at the surface-coated antiradar coatings of described screen, operate identical with the step 2 of embodiment 1.
6. operation is identical with the step 3 of embodiment 1.
7. operation is identical with the step 4 of embodiment 1.
8. operation is identical with the step 5 of embodiment 1.
9. operation is identical with the step 6 of embodiment 1.
According to standard SJ20524-1995 " method of testing of Materials ' Shielding Effectiveness ", the screening effectiveness of the suction waveguide magnetic shield film making according to the method to be tested, test result is in table 1.
The shield effectiveness test result that table 1 embodiment 1-4 makes
| ? | Thickness | Frequency range | Screening effectiveness |
| Embodiment 1 | 77μm | 100MHZ-3000MHz | 92DB |
| Embodiment 2 | 49.1μm | 100MHZ-8O00MHZ | 80DB |
| Embodiment 3 | 57.2μm | 100MHZ-8000MHZ | 85DB |
| Embodiment 4 | 104μm | 100MHZ-10GHZ | 98DB |
Claims (10)
1. inhale a waveguide magnetic shield film, comprise carrier rete, suction ripple layer, conductive adhesive layer and the protective film of stack successively, wherein between suction ripple layer and conductive adhesive layer, comprise magnetic layer and screen.
2. a kind of waveguide magnetic shield film of inhaling as claimed in claim 1, is characterized in that, described magnetic layer and screen are to superpose according to the order of magnetic layer, screen on the surface of described suction ripple layer.
3. a kind of waveguide magnetic shield film of inhaling as claimed in claim 1, is characterized in that, described carrier rete comprises the basement membrane layer and the following layer that is attached to its corona pre-treatment surface through corona pre-treatment, and wherein the thickness of following layer is 0.1 μ m-5 μ m.
4. a kind of waveguide magnetic shield film of inhaling as claimed in claim 1, it is characterized in that, described suction ripple layer is the rete of being made up of antiradar coatings, the thickness of inhaling ripple layer is 2 μ m-50 μ m, described antiradar coatings comprises resin, ferrite, inorganic filler and organic solvent, and wherein the content of resin is 10wt%-40wt%, and ferritic content is 5wt%-40wt%, the content of inorganic filler is 4wt%-20wt%, and it is 30%-60% that the consumption of adjustment organic solvent makes the solid content of antiradar coatings.
5. a kind of waveguide magnetic shield film of inhaling as claimed in claim 1, is characterized in that, described magnetic layer is taking ferrite as target, the rete forming on described suction ripple layer by magnetron sputtering, and the thickness of magnetic layer is 0.2 μ m-2 μ m.
6. a kind of waveguide magnetic shield film of inhaling as claimed in claim 1, is characterized in that, described screen is taking metal or its alloy as target, the rete forming on described magnetic layer by magnetron sputtering, and the thickness of screen is 0.1 μ m-2 μ m.
7. a kind of waveguide magnetic shield film of inhaling as claimed in claim 1, it is characterized in that, described conductive adhesive layer is the rete of being made up of conducting resinl coating, the thickness of conductive adhesive layer is 5 μ m-50 μ m, described conducting resinl coating comprises matrix resin, conducting particles, inorganic filler, curing agent and organic solvent, wherein the content of matrix resin is 20wt%-50wt%, the content of conducting particles is 10wt%-50wt%, the content of inorganic filler is 4wt%-20wt%, the content of curing agent is 0.3wt%-5wt%, it is 25%-60% that the consumption of adjustment organic solvent makes the solid content of conducting resinl coating.
8. a method of inhaling waveguide magnetic shield film, is characterized in that, comprises following making step:
1) carry out corona pre-treatment at basement membrane layer one side surface, and adhere to following layer at the side surface through corona pre-treatment, form carrier rete, wherein the thickness of following layer is 0.1 μ m-5 μ m;
2) at the surface-coated antiradar coatings of described following layer, form and inhale ripple layer, the thickness of inhaling ripple layer is 2 μ m-50 μ m;
3) on the surface of described suction ripple layer, taking ferrite as target, carry out magnetron sputtering plating, form magnetic layer, the thickness of magnetic layer is 0.1 μ m-2 μ m;
4) on the surface of described magnetic layer, taking metal or its alloy as target, carry out magnetron sputtering plating, form screen, the thickness of screen is 0.1 μ m-2 μ m;
5) at the surface-coated conducting resinl coating of described screen, form conductive adhesive layer, the thickness of conductive adhesive layer is 5 μ m-50 μ m;
6) enclose protective film at a side surface of described conductive adhesive layer.
9. the manufacture method of suction waveguide magnetic shield film as claimed in claim 7, it is characterized in that, described antiradar coatings comprises resin, ferrite, inorganic filler and organic solvent, wherein the content of resin is 10wt%-40wt%, ferritic content is 5wt%-40wt%, the content of inorganic filler is 4wt%-20wt%, and it is 30-60% that the consumption of adjustment organic solvent makes the solid content of antiradar coatings.
10. the manufacture method of suction waveguide magnetic shield film as claimed in claim 7, it is characterized in that, described conducting resinl coating comprises matrix resin, conducting particles, inorganic filler, curing agent and organic solvent, wherein the content of matrix resin is 10wt%-40wt%, the content of conducting particles is 10wt%-50wt%, the content of inorganic filler is 4wt%-20wt%, and the content of curing agent is 1wt%-5wt%, and it is 25%-60% that the consumption of adjustment organic solvent makes the solid content of conducting resinl coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310075143.4A CN104039121B (en) | 2013-03-08 | 2013-03-08 | One kind inhales waveguide magnetic shield film and preparation method thereof |
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| CN105275106A (en) * | 2015-11-05 | 2016-01-27 | 中国建筑材料科学研究总院 | Anti-electromagnetic radiation building |
| CN105744816A (en) * | 2014-12-27 | 2016-07-06 | 中原大学 | Electromagnetic wave shielding composite film |
| CN106298741A (en) * | 2016-08-11 | 2017-01-04 | 国网辽宁省电力有限公司电力科学研究院 | A kind of radio frequency multi-chip circuit electromagnetic armouring structure |
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| CN105744816A (en) * | 2014-12-27 | 2016-07-06 | 中原大学 | Electromagnetic wave shielding composite film |
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| CN108219699A (en) * | 2015-05-21 | 2018-06-29 | 斯迪克新型材料（江苏）有限公司 | Wave screened film is inhaled in height heat dissipation |
| CN108251003A (en) * | 2015-05-21 | 2018-07-06 | 斯迪克新型材料（江苏）有限公司 | High reliability inhales wave film |
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| CN105275106A (en) * | 2015-11-05 | 2016-01-27 | 中国建筑材料科学研究总院 | Anti-electromagnetic radiation building |
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| CN106298741A (en) * | 2016-08-11 | 2017-01-04 | 国网辽宁省电力有限公司电力科学研究院 | A kind of radio frequency multi-chip circuit electromagnetic armouring structure |
| CN106332536A (en) * | 2016-08-26 | 2017-01-11 | 京东方科技集团股份有限公司 | Electromagnetic interference shielding structure |
| CN108440942A (en) * | 2018-03-03 | 2018-08-24 | 王艺霖 | A kind of absorbing material and its in the polymer dispersing method |
| WO2020019272A1 (en) * | 2018-07-27 | 2020-01-30 | Qualcomm Incorporated | Integrated circuit package comprising enhanced electromagnetic shield |
| US10438901B1 (en) | 2018-08-21 | 2019-10-08 | Qualcomm Incorporated | Integrated circuit package comprising an enhanced electromagnetic shield |
| CN111148419A (en) * | 2018-11-05 | 2020-05-12 | 苏州大学 | Multilayer shielding film and manufacturing method thereof |
| CN111148421A (en) * | 2018-11-05 | 2020-05-12 | 苏州大学 | Shielding film and manufacturing method thereof |
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| CN111148422A (en) * | 2018-11-05 | 2020-05-12 | 苏州大学 | Shielding film and manufacturing method thereof |
| CN111726931A (en) * | 2019-03-22 | 2020-09-29 | 3M创新有限公司 | Electronic component, electronic device comprising the electronic component, and method for manufacturing the electronic component |
| CN112175530A (en) * | 2019-07-03 | 2021-01-05 | 广州宏庆电子有限公司 | Laminated film and preparation method thereof |
| CN112175530B (en) * | 2019-07-03 | 2022-06-14 | 广州宏庆电子有限公司 | Laminated film and preparation method thereof |
| CN111410920A (en) * | 2020-03-23 | 2020-07-14 | 苏州微邦材料科技有限公司 | Wave-absorbing shielding adhesive film and preparation method thereof |
| CN114134473A (en) * | 2020-12-24 | 2022-03-04 | 佛山市中研非晶科技股份有限公司 | Nickel-iron-based amorphous alloy film, preparation method thereof, electromagnetic shielding film and equipment applying nickel-iron-based amorphous alloy film |
| CN114101009A (en) * | 2021-10-25 | 2022-03-01 | 浙江巨光新材料有限公司 | Novel wave-absorbing material process method and device |
| CN117183533A (en) * | 2023-10-08 | 2023-12-08 | 常州勤邦新材料科技有限公司 | PET (polyethylene terephthalate) laminated card film and preparation method thereof |
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Effective date of registration: 20190717 Address after: 510530 South Tower, Guangxin Plaza, 217 Development Avenue, Huangpu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Hong Qing Electronics Co., Ltd. Address before: Moon Road, Science City high tech Industrial Development Zone of Guangzhou City, Guangdong province 510635 No. 80 building G 303 innovation base Patentee before: Zhu Qiong |