CN106061223A - Electromagnetic shielding film and preparation method thereof - Google Patents
Electromagnetic shielding film and preparation method thereof Download PDFInfo
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- CN106061223A CN106061223A CN201610557038.8A CN201610557038A CN106061223A CN 106061223 A CN106061223 A CN 106061223A CN 201610557038 A CN201610557038 A CN 201610557038A CN 106061223 A CN106061223 A CN 106061223A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/05—5 or more layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/212—Electromagnetic interference shielding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/554—Wear resistance
Abstract
The invention relates to the technical field of shielding films, and particularly relates to an electromagnetic shielding film comprising a stripping film layer, an insulating layer, an electromagnetic shielding layer, an electromagnetic absorbing layer and a release film which are arranged from the top to the bottom in turn. The stripping film layer comprises a stripping film and an adhesive layer which is adhered on the lower surface of the stripping film. The upper surface and the lower surface of the insulating layer are respectively fit with the lower surface of the adhesive layer and the upper surface of the electromagnetic shielding layer. The upper surface and the lower surface of the electromagnetic absorbing layer are respectively fit with the lower surface of the electromagnetic shielding layer and the upper surface of the release film. The electromagnetic absorbing layer comprises a zinc oxide coating layer which is adhered on the lower surface of the electromagnetic shielding layer and a modified nickel powder coating layer which is adhered on the lower surface of the zinc oxide coating layer. The lower surface of the modified nickel powder coating layer is fit with the upper surface of the release film. The composite coating layer of the zinc oxide coating layer and the modified nickel powder coating layer is used as the electromagnetic absorbing layer so that absorption and shielding of electromagnetic waves can be enhanced, production cost can be reduced and production efficiency can be enhanced.
Description
Technical field
The present invention relates to screened film technical field, be specifically related to a kind of electromagnetic shielding film and preparation method thereof.
Background technology
At present, the electronic equipment of PC, mobile phone and digital equipment etc. presents miniaturization and light-weighted trend, this electronic equipment
At full speed universal, be connected in the flood also causing electromagnetic wave in work unit or family, thus along with the development of electronic industry, electricity
The threat of magnetic disturbance is more and more higher.Existing electromagnetic shielding film is made up of insulating barrier, metal level and conductive adhesive layer.
Wherein, metal level is realized by evaporation or magnetron sputtering at present substantially, and these equipment prices costly, need simultaneously
Occupying bigger production space, this results in enterprise needs to put into bigger production cost.
Summary of the invention
In order to overcome shortcoming and defect present in prior art, it is an object of the invention to provide a kind of electromagnetic shielding
Film, this electromagnetic shielding film is good with shield effectiveness to the absorption of electromagnetic wave.
Another object of the present invention is to provide the preparation method of a kind of electromagnetic shielding film, this preparation method step is simple,
Convenient operation and control, steady quality, production efficiency is high, and production cost is low, can large-scale industrial production.
The purpose of the present invention is achieved through the following technical solutions: a kind of electromagnetic shielding film, including setting gradually from top to bottom
Stripping film layer, insulating barrier, electro-magnetic screen layer, electromagnetic absorption layer and mould release membrance, stripping film layer includes stripping film and fit in stripping
From the adhesive-layer of film lower surface, upper with the lower surface of adhesive-layer and electro-magnetic screen layer respectively of the upper surface of insulating barrier, lower surface
Fitting in surface, the upper surface of electromagnetic absorption layer, lower surface paste with the lower surface of electro-magnetic screen layer and the upper surface of mould release membrance respectively
Close；Described electromagnetic absorption layer includes the Zinc oxide coating fitting in described electro-magnetic screen layer lower surface and fits in Zinc oxide coating
The modified nikel powder coating of lower surface, the lower surface of modified nikel powder coating is fitted with the upper surface of described mould release membrance.
Preferably, any one during described stripping film is PET film, PVC film, PC thin film, OPP film and PE thin film
Kind.The present invention is by using above-mentioned thin film as stripping film, and its peeling effect is good, and light transmittance is high.
Described adhesive-layer is any one in layer of silica gel, acrylic glue-line, pressure-sensitive adhesive layer and OCA glue layer.The present invention
By using above-mentioned adhesive-layer as adhesive-layer, its peeling effect is good.
Described mould release membrance is off-type force at the PET mould release membrance of 5-10gf, PE mould release membrance, OPP mould release membrance, BOPET mould release membrance
With any one in BOPP mould release membrance.The present invention is by using off-type force in the above-mentioned mould release membrance of 5-10gf, its release effect
Good, light transmittance is high.
The thickness of described stripping film is 25-75 μm.Concrete, the thickness of described stripping film can be 25 μm, 35 μm, 45 μ
M, 55 μm, 65 μm or 75 μm.Preferably, the thickness of described stripping film is 55 μm.
The thickness of described adhesive-layer is 5-15 μm.Concrete, the thickness of described adhesive-layer can be 5 μm, 8 μm, 10 μm, 12
μm or 15 μm.Preferably, the thickness of described adhesive-layer is 10 μm.
The thickness of described insulating barrier is 3-5 μm.Concrete, the thickness of described insulating barrier can be 3 μm, 3.5 μm, 4 μm,
4.5 μm or 5 μm.Preferably, the thickness of described insulating barrier is 4 μm.
The thickness of described electro-magnetic screen layer is 3-5 μm.Concrete, the thickness of described electro-magnetic screen layer can be 3 μm, 3.5 μ
M, 4 μm, 4.5 μm or 5 μm.Preferably, the thickness of described electro-magnetic screen layer is 4 μm.
The thickness of described Zinc oxide coating is 3-11 μm.Concrete, the thickness of described Zinc oxide coating can be 3 μm, 5 μ
M, 7 μm, 9 μm or 11 μm.Preferably, the thickness of described Zinc oxide coating is 7 μm.
The thickness of described modified nikel powder coating is 4-10 μm.Concrete, the thickness of described modified nikel powder coating can be 4 μ
M, 6 μm, 7 μm, 8 μm or 10 μm.Preferably, the thickness of described modified nikel powder coating is 7 μm.
The thickness of described mould release membrance is 50-100 μm.Concrete, the thickness of described mould release membrance can be 50 μm, 60 μm, 70 μ
M, 75 μm, 80 μm, 90 μm or 100 μm.Preferably, the thickness of described mould release membrance is 75 μm.
Preferably, described insulating barrier is UV hardened layer, and described UV hardened layer is prepared by the coated rear solidification of UV glue, described UV
Glue is made up of the raw material of following weight portion:
Prepolymer 25-70 part
Acrylate monomer 20-70 part
Light trigger 2-7 part
Auxiliary agent 3-5 part.
The UV hardened layer of the present invention is by using above-mentioned raw materials, and strictly controls the weight proportion of each raw material, prepared UV
Hardened layer insulation effect is good, and wearability is good.
Preferably, described prepolymer is esters of acrylic acid prepolymer.The present invention by use esters of acrylic acid prepolymer, its
Solidification effect is good, and curing rate is fast.
Described acrylate monomer is methyl acrylic ester, ethylene propylene esters of gallic acid and vinyl ether acrylate class
In at least one.The present invention is by using aforesaid propylene acid ester monomer, and its cross-linking effect is good, the UV hardened layer wearability prepared
Good.
Preferably, described light trigger is carbonyl compound, azo-compound, organic sulfur compound, redox materials, halogen
At least one in element compound and organo-metallic compound.The present invention is by using above-mentioned light trigger, and its curing rate is fast,
Solidification effect is good.
Described auxiliary agent is at least one in stabilizer, thixotropic agent and adhesive promoter.The present invention is above-mentioned by using
Auxiliary agent, prepared UV glue good stability, adhesive force is good.
Preferably, described electro-magnetic screen layer is prepared by the coated rear solidification of electromagnetic screen coating, described electromagnetic screen coating
Raw material be made up of the raw material of following weight portion: resin 100 parts and carbon fiber 20-80 part.
The present invention is added with the electro-magnetic screen layer of carbon fiber by employing, compared with other plated film, is added with carbon fiber
Electro-magnetic screen layer is more preferable with bilevel degree of adhesion, more strengthens resistance to bend(ing) and the folding resistance of screened film.
Preferably, at least one during described resin is acrylic resin, epoxy resin and polyurethane resin.The present invention is led to
Crossing and use above-mentioned resin, its bonding effect is good, and curing rate is fast.
Described carbon fiber is that surface deposition has the carbon fiber of carbon granules or surface to be coated with the carbon fiber of carborundum.The present invention passes through
Surface deposition is used to have the carbon fiber of carbon granules or surface to be coated with the carbon fiber of carborundum, prepared electro-magnetic screen layer and upper and lower two-layer
Degree of adhesion more preferable, more strengthen resistance to bend(ing) and the folding resistance of screened film.
Preferably, described Zinc oxide coating by zinc oxide coating coated after solidification prepare, described zinc oxide coating former
Material is made up of the raw material of following weight portion: resin 100 parts and zinc oxide 30-70 part.
The Zinc oxide coating of the present invention, by using resin and zinc oxide as raw material, and strictly controls its weight ratio and is
10:3-7, prepared Zinc oxide coating is good with shield effectiveness to the absorption of electromagnetic wave.
Described resin is at least one in acrylic resin, epoxy resin and polyurethane resin.The present invention is by using
Above-mentioned resin, its bonding effect is good, and curing rate is fast.
Preferably, described modified nikel powder coating is prepared by the coated rear solidification of Modified Nickel powder coating, and described modified nikel powder is coated with
The raw material of material is made up of the raw material of following weight portion: resin 100 parts and modified nikel powder 30-70 part.
The modified nikel powder coating of the present invention, by using resin and zinc oxide as raw material, and strictly controls its weight ratio and is
100:3-7 part, prepared modified nikel powder coating is good with shield effectiveness to the absorption of electromagnetic wave.
Described resin is at least one in acrylic resin, epoxy resin and polyurethane resin.The present invention is by using
Above-mentioned resin, its bonding effect is good, and curing rate is fast.
Another object of the present invention is achieved through the following technical solutions: the preparation method of a kind of electromagnetic shielding film, including such as
Lower step:
(1) taking a mould release membrance, the upper surface at mould release membrance is coated with Modified Nickel powder coating, forms modified nikel powder coating after solidification；
(2) at upper surface one layer of zinc oxide coating of coating of modified nikel powder coating, Zinc oxide coating after solidification, is formed；
(3) upper surface at Zinc oxide coating is coated with one layer of electromagnetic screen coating, forms electro-magnetic screen layer after solidification；
(4) upper surface at electro-magnetic screen layer is coated with one layer of UV glue, forms UV hardened layer after solidification；
(5) stripping film is taken, at one layer of adhesive-layer of coated on one side of stripping film, upper by the lower surface of adhesive-layer and UV hardened layer
Fitting in surface, prepares electromagnetic shielding film.
The beneficial effects of the present invention is: the electromagnetic shielding film of the present invention is coated with by using Zinc oxide coating and modified nikel powder
The composite coating of layer, as electromagnetic absorption layer, had both enhanced absorption and the shielding of electromagnetic wave, and had reduced again production cost, improve simultaneously
Production efficiency.
The electromagnetic shielding film of the present invention is by using the composite coating of Zinc oxide coating and modified nikel powder coating as electromagnetism
Absorbed layer, sputters with observing and controlling compared to vacuum coating, and this programme can save the relevant device of plated film, reduces simultaneously and produces sky
Between, save and put into and production cost.
The electromagnetic absorption layer of the present invention, by using Zinc oxide coating as bottom, uses modified nikel powder coating as table
Layer, this composite coating to the absorption shield effectiveness of electromagnetic wave economical and be functionally better than metal and alloy powder thereof and
Partially electronically conductive macromolecular material.
The preparation method step of the present invention is simple, convenient operation and control, steady quality, and production efficiency is high, and production cost is low,
Can large-scale industrial production.
Accompanying drawing explanation
Fig. 1 is the axonometric chart partial sectional view of the present invention.
Reference is: 1 stripping film layer, 11 stripping films, 12 adhesive-layers, 2 insulating barriers, 3 electro-magnetic screen layers,
4 electromagnetic absorption layers, 41 Zinc oxide coatings, 42 modified nikel powder coating, 5 mould release membrances.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment and accompanying drawing 1, the present invention is made further
Illustrate, the content that embodiment is mentioned not limitation of the invention.
Embodiment 1
See Fig. 1, a kind of electromagnetic shielding film, including the stripping film layer 1 set gradually from top to bottom, insulating barrier 2, electro-magnetic screen layer 3,
Electromagnetic absorption layer 4 and mould release membrance 5, stripping film layer 1 includes stripping film 11 and fits in the adhesive-layer 12 of stripping film 11 lower surface, absolutely
The upper surface of edge layer 2, lower surface are fitted with the lower surface of adhesive-layer 12 and the upper surface of electro-magnetic screen layer 3 respectively, electromagnetic absorption
The upper surface of layer 4, lower surface are fitted with the lower surface of electro-magnetic screen layer 3 and the upper surface of mould release membrance 5 respectively；Described electromagnetic absorption
Layer 4 includes the Zinc oxide coating 41 fitting in described electro-magnetic screen layer 3 lower surface and fits in Zinc oxide coating 41 lower surface
Modified nikel powder coating 42, the lower surface of modified nikel powder coating 42 is fitted with the upper surface of described mould release membrance 5.
When the present invention uses, stripping film 11 is torn off, adhesive-layer 12 is attached on electronic product screen, tear off the most again from
Type film 5.
The preparation method of a kind of electromagnetic shielding film, comprises the steps:
(1) taking a mould release membrance 5, the upper surface at mould release membrance 5 is coated with Modified Nickel powder coating, forms modified nikel powder coating after solidification
42；
(2) at upper surface one layer of zinc oxide coating of coating of modified nikel powder coating 42, Zinc oxide coating 41 after solidification, is formed；
(3) upper surface at Zinc oxide coating 41 is coated with one layer of electromagnetic screen coating, forms electro-magnetic screen layer 3 after solidification；
(4) upper surface at electro-magnetic screen layer 3 is coated with one layer of UV glue, forms UV hardened layer after solidification；
(5) stripping film 11 is taken, at one layer of adhesive-layer 12 of coated on one side of stripping film 11, by hard with UV for the lower surface of adhesive-layer 12
Change the upper surface laminating of layer, prepare electromagnetic shielding film.
Embodiment 2
The present embodiment is with the difference of above-described embodiment 1: described stripping film 11 is PET film；Described adhesive-layer 12 is
Layer of silica gel；Described mould release membrance 5 is the off-type force PET mould release membrance 5 at 5gf.
The thickness of described stripping film 11 is 25 μm；The thickness of described adhesive-layer 12 is 5 μm；The thickness of described insulating barrier 2 is 3
μm；The thickness of described electro-magnetic screen layer 3 is 3 μm；The thickness of described Zinc oxide coating 41 is 3 μm；Described modified nikel powder coating 42
Thickness be 4 μm；The thickness of described mould release membrance 5 is 50 μm.
Described insulating barrier 2 is UV hardened layer, and described UV hardened layer is prepared by the coated rear solidification of UV glue, and described UV glue is by such as
The raw material composition of lower weight portion:
Prepolymer 25 parts
Acrylate monomer 20 parts
Light trigger 2-part
Auxiliary agent 3 parts.
Described prepolymer is esters of acrylic acid prepolymer；Described acrylate monomer is methyl acrylic ester.
Described light trigger is carbonyl compound；Described auxiliary agent is stabilizer.
Described electro-magnetic screen layer 3 is prepared by the coated rear solidification of electromagnetic screen coating, the raw material of described electromagnetic screen coating
It is made up of the raw material of following weight portion: resin 100 parts and 20 parts of carbon fiber.
Described resin is acrylic resin；Described carbon fiber is the carbon fiber that surface deposition has carbon granules.
Described Zinc oxide coating 41 is prepared by the coated rear solidification of zinc oxide coating, and the raw material of described zinc oxide coating is by such as
The raw material composition of lower weight portion: resin 100 parts and zinc oxide 30 parts；Described resin is acrylic resin.
Described modified nikel powder coating 42 by Modified Nickel powder coating coated after solidification prepare, described Modified Nickel powder coating former
Material is made up of the raw material of following weight portion: resin 100 parts and modified nikel powder 30 parts；Described resin is acrylic resin.
Embodiment 3
The present embodiment is with the difference of above-described embodiment 1: described stripping film 11 is PVC film；Described adhesive-layer 12 is
Acrylic glue-line；Described mould release membrance 5 is the off-type force PE mould release membrance 5 at 6gf.
The thickness of described stripping film 11 is 40 μm；The thickness of described adhesive-layer 12 is 8 μm；The thickness of described insulating barrier 2 is
3.5μm；The thickness of described electro-magnetic screen layer 3 is 3.5 μm；The thickness of described Zinc oxide coating 41 is 5 μm；Described modified nikel powder is coated with
The thickness of layer 42 is 6 μm；The thickness of described mould release membrance 5 is 60 μm.
Described insulating barrier 2 is UV hardened layer, and described UV hardened layer is prepared by the coated rear solidification of UV glue, and described UV glue is by such as
The raw material composition of lower weight portion:
Prepolymer 35 parts
Acrylate monomer 35 parts
Light trigger 3 parts
Auxiliary agent 3.5 parts.
Described prepolymer is esters of acrylic acid prepolymer；Described acrylate monomer is ethylene propylene esters of gallic acid.
Described light trigger is azo-compound；Described auxiliary agent is thixotropic agent.
Described electro-magnetic screen layer 3 is prepared by the coated rear solidification of electromagnetic screen coating, the raw material of described electromagnetic screen coating
It is made up of the raw material of following weight portion: resin 100 parts and 40 parts of carbon fiber.
Described resin is epoxy resin；Described carbon fiber is the carbon fiber that surface is coated with carborundum.
Described Zinc oxide coating 41 is prepared by the coated rear solidification of zinc oxide coating, and the raw material of described zinc oxide coating is by such as
The raw material composition of lower weight portion: resin 100 parts and zinc oxide 40 parts；Described resin is epoxy resin.
Described modified nikel powder coating 42 by Modified Nickel powder coating coated after solidification prepare, described Modified Nickel powder coating former
Material is made up of the raw material of following weight portion: resin 100 parts and modified nikel powder 40 parts；Described resin is epoxy resin.
Embodiment 4
The present embodiment is with the difference of above-described embodiment 1: described stripping film 11 is PC thin film；Described adhesive-layer 12 is pressure
Quick glue-line；Described mould release membrance 5 is the off-type force OPP mould release membrance 5 at 8gf.
The thickness of described stripping film 11 is 50 μm；The thickness of described adhesive-layer 12 is 10 μm；The thickness of described insulating barrier 2 is
4μm；The thickness of described electro-magnetic screen layer 3 is 4 μm；The thickness of described Zinc oxide coating 41 is 7 μm；Described modified nikel powder coating 42
Thickness be 7 μm；The thickness of described mould release membrance 5 is 75 μm.
Described insulating barrier 2 is UV hardened layer, and described UV hardened layer is prepared by the coated rear solidification of UV glue, and described UV glue is by such as
The raw material composition of lower weight portion:
Prepolymer 50 parts
Acrylate monomer 50 parts
Light trigger 5 parts
Auxiliary agent 4 parts.
Described prepolymer is esters of acrylic acid prepolymer；Described acrylate monomer is vinyl ether acrylate class.
Described light trigger is organic sulfur compound；Described auxiliary agent is adhesive promoter.
Described electro-magnetic screen layer 3 is prepared by the coated rear solidification of electromagnetic screen coating, the raw material of described electromagnetic screen coating
It is made up of the raw material of following weight portion: resin 100 parts and 50 parts of carbon fiber.
Described resin is polyurethane resin；Described carbon fiber is the carbon fiber that surface deposition has carbon granules.
Described Zinc oxide coating 41 is prepared by the coated rear solidification of zinc oxide coating, and the raw material of described zinc oxide coating is by such as
The raw material composition of lower weight portion: resin 100 parts and zinc oxide 50 parts；Described resin is polyurethane resin.
Described modified nikel powder coating 42 by Modified Nickel powder coating coated after solidification prepare, described Modified Nickel powder coating former
Material is made up of the raw material of following weight portion: resin 100 parts and modified nikel powder 50 parts；Described resin is polyurethane resin.
Embodiment 5
The present embodiment is with the difference of above-described embodiment 1: described stripping film 11 is OPP film；Described adhesive-layer 12 is
OCA glue layer；Described mould release membrance 5 is the off-type force BOPET mould release membrance 5 at 9gf.
The thickness of described stripping film 11 is 60 μm；The thickness of described adhesive-layer 12 is 12 μm；The thickness of described insulating barrier 2 is
4.5μm；The thickness of described electro-magnetic screen layer 3 is 4.5 μm；The thickness of described Zinc oxide coating 41 is 9 μm；Described modified nikel powder is coated with
The thickness of layer 42 is 8 μm；The thickness of described mould release membrance 5 is 80 μm.
Described insulating barrier 2 is UV hardened layer, and described UV hardened layer is prepared by the coated rear solidification of UV glue, and described UV glue is by such as
The raw material composition of lower weight portion:
Prepolymer 60 parts
Acrylate monomer 60 parts
Light trigger 6 parts
Auxiliary agent 4.5 parts.
Described prepolymer is esters of acrylic acid prepolymer；Described acrylate monomer is methyl acrylic ester, vinyl
Esters of acrylic acid and any two kinds of mixture formed with weight ratio 1:1 of vinyl ether acrylate apoplexy due to endogenous wind.
Described light trigger is redox materials；Described auxiliary agent is in stabilizer, thixotropic agent and adhesive promoter
Any two kinds of mixture formed with weight ratio 1:1.
Described electro-magnetic screen layer 3 is prepared by the coated rear solidification of electromagnetic screen coating, the raw material of described electromagnetic screen coating
It is made up of the raw material of following weight portion: resin 100 parts and 70 parts of carbon fiber.
Described resin is acrylic resin；Described carbon fiber is the carbon fiber that surface is coated with carborundum.
Described Zinc oxide coating 41 is prepared by the coated rear solidification of zinc oxide coating, and the raw material of described zinc oxide coating is by such as
The raw material composition of lower weight portion: resin 100 parts and zinc oxide 60 parts；Described resin is acrylic resin.
Described modified nikel powder coating 42 by Modified Nickel powder coating coated after solidification prepare, described Modified Nickel powder coating former
Material is made up of the raw material of following weight portion: resin 100 parts and modified nikel powder 60 parts；Described resin is acrylic resin.
Embodiment 6
The present embodiment is with the difference of above-described embodiment 1: described stripping film 11 is PE thin film；Described adhesive-layer 12 is silicon
Glue-line；Described mould release membrance 5 is the off-type force BOPP mould release membrance 5 at 10gf.
The thickness of described stripping film 11 is 75 μm；The thickness of described adhesive-layer 12 is 15 μm；The thickness of described insulating barrier 2 is
5μm；The thickness of described electro-magnetic screen layer 3 is 5 μm；The thickness of described Zinc oxide coating 41 is 11 μm；Described modified nikel powder coating
The thickness of 42 is 10 μm；The thickness of described mould release membrance 5 is 100 μm.
Described insulating barrier 2 is UV hardened layer, and described UV hardened layer is prepared by the coated rear solidification of UV glue, and described UV glue is by such as
The raw material composition of lower weight portion:
Prepolymer 70 parts
Acrylate monomer 70 parts
Light trigger 7 parts
Auxiliary agent 5 parts.
Described prepolymer is esters of acrylic acid prepolymer；Described acrylate monomer is methyl acrylic ester, vinyl
The mixture that esters of acrylic acid and vinyl ether acrylate class form with weight ratio 1:1:1.
Described light trigger is halogen compounds or organo-metallic compound；Described auxiliary agent is stabilizer, thixotropic agent and attached
Put forth effort the mixture that reinforcing agent forms with weight ratio 1:1:1.
Described electro-magnetic screen layer 3 is prepared by the coated rear solidification of electromagnetic screen coating, the raw material of described electromagnetic screen coating
It is made up of the raw material of following weight portion: resin 100 parts and 80 parts of carbon fiber.
Described resin is epoxy resin；Described carbon fiber is the carbon fiber that surface deposition has carbon granules.
Described Zinc oxide coating 41 is prepared by the coated rear solidification of zinc oxide coating, and the raw material of described zinc oxide coating is by such as
The raw material composition of lower weight portion: resin 100 parts and zinc oxide 70 parts；Described resin is epoxy resin.
Described modified nikel powder coating 42 by Modified Nickel powder coating coated after solidification prepare, described Modified Nickel powder coating former
Material is made up of the raw material of following weight portion: resin 100 parts and modified nikel powder 70 parts；Described resin is epoxy resin.
Above-described embodiment is the present invention preferably implementation, and in addition, the present invention can realize with alternate manner,
Without departing from obvious replacement any on the premise of present inventive concept all within protection scope of the present invention.
Claims (10)
1. an electromagnetic shielding film, it is characterised in that: the stripping film layer that includes setting gradually from top to bottom, insulating barrier, electromagnetic screen
Covering layer, electromagnetic absorption layer and mould release membrance, stripping film layer includes stripping film and fits in the adhesive-layer of stripping film lower surface, insulating barrier
Upper surface, lower surface respectively with the upper surface laminating of the lower surface of adhesive-layer and electro-magnetic screen layer, the upper table of electromagnetic absorption layer
Face, lower surface are fitted with the lower surface of electro-magnetic screen layer and the upper surface of mould release membrance respectively；Described electromagnetic absorption layer includes laminating
In the Zinc oxide coating of described electro-magnetic screen layer lower surface with fit in the modified nikel powder coating of Zinc oxide coating lower surface, modified
The upper surface laminating of the lower surface of nikel powder coating and described mould release membrance.
A kind of electromagnetic shielding film the most according to claim 1, it is characterised in that: described stripping film is that PET film, PVC are thin
Any one in film, PC thin film, OPP film and PE thin film；Described adhesive-layer is layer of silica gel, acrylic glue-line, pressure-sensitive adhesive layer
With any one in OCA glue layer；Described mould release membrance be off-type force the PET mould release membrance of 5-10gf, PE mould release membrance, OPP from
Any one in type film, BOPET mould release membrance and BOPP mould release membrance.
A kind of electromagnetic shielding film the most according to claim 1, it is characterised in that: described insulating barrier is UV hardened layer, described
UV hardened layer is prepared by the coated rear solidification of UV glue, and described UV glue is made up of the raw material of following weight portion:
Prepolymer 25-70 part
Acrylate monomer 20-70 part
Light trigger 2-7 part
Auxiliary agent 3-5 part.
A kind of electromagnetic shielding film the most according to claim 3, it is characterised in that: described prepolymer is esters of acrylic acid pre-polymerization
Thing；Described acrylate monomer is methyl acrylic ester, ethylene propylene esters of gallic acid and vinyl ether acrylate apoplexy due to endogenous wind
At least one.
A kind of electromagnetic shielding film the most according to claim 3, it is characterised in that: described light trigger be carbonyl compound,
At least one in azo-compound, organic sulfur compound, redox materials, halogen compounds and organo-metallic compound；Institute
Stating auxiliary agent is at least one in stabilizer, thixotropic agent and adhesive promoter.
A kind of electromagnetic shielding film the most according to claim 1, it is characterised in that: described electro-magnetic screen layer is coated with by electromagnetic shielding
Expecting that coated rear solidification prepares, the raw material of described electromagnetic screen coating is made up of the raw material of following weight portion: resin 100 parts and carbon
Fiber 20-80 part.
A kind of electromagnetic shielding film the most according to claim 6, it is characterised in that: described resin is acrylic resin, epoxy
At least one in resin and polyurethane resin；Described carbon fiber is that surface deposition has the carbon fiber of carbon granules or surface to be coated with carbonization
The carbon fiber of silicon.
A kind of electromagnetic shielding film the most according to claim 1, it is characterised in that: described Zinc oxide coating is by zinc oxide coating
After coated, solidification prepares, and the raw material of described zinc oxide coating is made up of the raw material of following weight portion: resin 100 parts and zinc oxide
30-70 part；Described resin is at least one in acrylic resin, epoxy resin and polyurethane resin.
A kind of electromagnetic shielding film the most according to claim 1, it is characterised in that: described modified nikel powder coating is by modified nikel powder
Coating coated after solidification prepare, the raw material of described Modified Nickel powder coating is made up of the raw material of following weight portion: resin 100 parts and
Modified nikel powder 30-70 part；Described resin is at least one in acrylic resin, epoxy resin and polyurethane resin.
10. the preparation method of a kind of electromagnetic shielding film as described in any one of claim 1-9, it is characterised in that: include as follows
Step:
(1) taking a mould release membrance, the upper surface at mould release membrance is coated with Modified Nickel powder coating, forms modified nikel powder coating after solidification；
(2) at upper surface one layer of zinc oxide coating of coating of modified nikel powder coating, Zinc oxide coating after solidification, is formed；
(3) upper surface at Zinc oxide coating is coated with one layer of electromagnetic screen coating, forms electro-magnetic screen layer after solidification；
(4) upper surface at electro-magnetic screen layer is coated with one layer of UV glue, forms UV hardened layer after solidification；
(5) stripping film is taken, at one layer of adhesive-layer of coated on one side of stripping film, upper by the lower surface of adhesive-layer and UV hardened layer
Fitting in surface, prepares electromagnetic shielding film.
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| CN201610557038.8A CN106061223A (en) | 2016-07-15 | 2016-07-15 | Electromagnetic shielding film and preparation method thereof |
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| CN201610557038.8A CN106061223A (en) | 2016-07-15 | 2016-07-15 | Electromagnetic shielding film and preparation method thereof |
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| CN107912012A (en) * | 2017-11-29 | 2018-04-13 | 横店集团东磁股份有限公司 | A kind of electromagnetic wave shielding/absorption composite paster and preparation method thereof |
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Application publication date: 20161026 |