CN109068554A - A kind of FPC reflection-type electromagnetic shielding film and preparation method thereof - Google Patents
A kind of FPC reflection-type electromagnetic shielding film and preparation method thereof Download PDFInfo
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- CN109068554A CN109068554A CN201810828547.9A CN201810828547A CN109068554A CN 109068554 A CN109068554 A CN 109068554A CN 201810828547 A CN201810828547 A CN 201810828547A CN 109068554 A CN109068554 A CN 109068554A
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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
- H05K9/0007—Casings
- H05K9/002—Casings with localised screening
- H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
- H05K9/0024—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields
- H05K9/0026—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields integrally formed from metal sheet
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/18—Homopolymers or copolymers of nitriles
- C09D133/20—Homopolymers or copolymers of acrylonitrile
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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
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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
- C09D5/004—Reflecting paints; Signal 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
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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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
- C08K3/08—Metals
- C08K2003/085—Copper
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
The present invention provides a kind of preparation method of FPC reflection-type electromagnetic shielding film, comprising the following steps: the first step prepares the coating of the first coatings layer, the second coatings layer and reflection of electromagnetic wave coating；Second step, coating；First coatings layer is the coating of wear-resisting type, and wearability is greater than 1000 times；Second coatings layer is the coating of high filling, high tenacity, and number resistant to bending is greater than 80000；The coating of reflection of electromagnetic wave coating includes matrix resin and metal packing, and metal packing is sheet silver packet glass or flaky silver coated copper powder or leaf shape silver-coated copper powder or dendroid silver-coated copper powder；Carrier film is matte release film；Metal packing having a size of 1~2 μm, 3~9 μm of planar dimension, has 3~5 bifurcateds in leaf shape metal packing in thickness direction；The matrix resin of reflection of electromagnetic wave coating and the ratio of metal packing are 1:1.5~1:5；The present invention has more preferably flexibility, bending resistance, product planarization and shield effectiveness.
Description
Technical field
The present invention relates to electromangnetic spectrum fields, more particularly, to a kind of FPC reflection-type electromagnetic shielding film and its system
Preparation Method.
Background technique
In flexible print circuit board (FPC) industry, with the update of the electronic equipments such as smart phone, Ipad, to electricity
The requirement of magnetic screen is also higher and higher.And due to the processing technology and requirement of FPC, use the electromagnetic shielding film on FPC
It must satisfy following requirement: high temperature resistant (180 DEG C, a few hours, 270 DEG C, short time) high pressure (12MPa), it is flexible resistant to bending,
1000h constant temperature and humidity (85 DEG C of temperature, 85% humidity), resistance to liquid medicine (acid, alkali, organic solvent), resistance to ultrasonic cleaning.
In the prior art, electromagnetic shielding film has the following problems: (1) insulating layer of electromagnetic shielding film uses ink, because of oil
Black molecular weight is low, and proportion of filler is high, and crosslink density is big, and ink is printed on general carrier film, and the volume contraction of curing reaction is big,
Because ink itself is partially crisp, partially hard characteristic will lead to the electromagnetic shielding film using Printing ink producing, partially hard partially crisp, not resistant to bending；With
In FPC industry, cause the flexibility, bending resistance, product planarization of electromagnetic shielding film poor；When tearing carrier film, ink is easy
With carrier film coalescence；Ink itself is more crisp, is easy to appear micro-crack, and during leading to FPC following process, liquid medicine penetrates into, and leads
Cause scrap of the product.(2) shielded layer of electromagnetic shielding film uses metal screen layer, or uses conductive layer, and metal screen layer is in FPC
In the operating process of the high temperature and pressure of subsequent complexity, situations such as metal layer is easy to appear fragmentation line, oxidation, it can make under shielding properties
Drop, or even shielding properties is lost, while blistering layering is easy in subsequent reflow Welding.(3) it is made of common conductive glue
Screened film because conductivity is low, being continuously turned on property is poor, and shielding properties is poor, is difficult meet the needs of FPC industry.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of FPC reflection-type electromagnetic shielding film and preparation method thereof, tools
There are more preferably flexibility, bending resistance, product planarization and shield effectiveness.
In order to solve the above technical problem, the present invention provides a kind of FPC preparation method of reflection-type electromagnetic shielding film, packets
Include following steps:
The first step prepares the coating of the first coatings layer, the second coatings layer and reflection of electromagnetic wave coating；Described
The coating of one coatings layer is the acrylate paint or polyurethane coating of wear-resisting type, and wearability is greater than 1000 times；Described
The coating of two coatings layers is high filling, the acrylate paint of high tenacity or polyurethane coating or rubber coating, resistant to bending
Number is greater than 80000；The coating of the reflection of electromagnetic wave coating includes matrix resin and metal packing, and described matrix resin is third
Olefin(e) acid type or polyurethane-type or rubber-type, the metal packing are sheet silver packet glass or flaky silver coated copper powder or leaf shape silver packet
Copper powder or dendroid silver-coated copper powder；
The carrier film is matte release film；The metal packing in thickness direction having a size of 1~2 μm, planar dimension 3~
9 μm, there are 3~5 bifurcateds in metal packing described in leaf shape；The matrix resin of the reflection of electromagnetic wave coating is filled out with the metal
The ratio of material is 1:1.5~1:5；
Second step, coating
Greasy dirt and foreign matter on A4, removing carrier thin film volume inner face；
A5, it is coated with prepared first coatings layer on carrier thin film volume inner face, it is dry through baking oven with a thickness of 1~2 μm
It is dry to solidify the first coatings layer；Oven temperature is 60~120 DEG C；Linear velocity is 5~30m/min；
A6, prepared second coatings layer is coated in the first coatings layer, it is dry through baking oven with a thickness of 2~7 μm
It is dry to solidify the second coatings layer；Oven temperature is 60~120 DEG C；Linear velocity is 5~30m/min；
A7, it is coated with prepared reflection of electromagnetic wave coating in the second coatings layer, with a thickness of 5~10 μm, is incorporated to baking
Case is dry, and oven temperature is 60~120 DEG C；Linear velocity is 5~30m/min；
A8, the one leafing type protective film layer of thermal-adhering on reflection of electromagnetic wave coating；
A9, winding.
It is preferred that the coating of first coatings layer is acrylate paint；Preparation process is as follows:
(1) 3~10 parts, 10~30 parts of methyl acrylate, 30~60 parts of acrylonitrile, butyl acrylate 10~30 are taken by weight
Part, 5~10 parts of isobornyl acrylate are made in 50~60 DEG C, 30~60h of reaction by lotion or solution or bulk polymerization
Acrylic resin I polymerize and acrylic resin I molecular weight is made greater than 100,000；
(2) take above-mentioned acrylic resin I, and in acrylic resin I by weight be added 10%~20% colour carbon black,
3~10% titanium dioxides, 5~15% silica, 1~5% propylene acid as curing agent, stir evenly, and the insulation of wear-resisting type first is made and applies
Bed of material coating, wearability are more than 1000 times.
It is preferred that the coating of first coatings layer is polyurethane coating, preparation process is as follows:
(1) take one of polyester polyol, polyether polyol, hydroxyl terminated polycarbonate of molecular weight 1000~2000 or
It is several, with one of toluene di-isocyanate(TDI), methyl diphenylene diisocyanate, benzene dimethylene diisocyanate or several
Kind, by functional group 1.1~1.3:1 of molar ratio, organotin catalysts are added and are then warming up in 40~60 DEG C of 8~10h of reaction
80~100 DEG C of 5~10h of reaction synthesize hydroxyl-terminated polyurethane resin I molecular weight 1~30,000.
(2) above-mentioned polyurethane resin I is taken, and in polyurethane resin I by weight addition 10%~20% colour carbon black, 3
~10% titanium dioxide, 5~15% silica, 1~5% polyurethane curing agent, stir evenly, and the first coatings of wear-resisting type are made
Coating, wearability meet more than 1000 times.
It is preferred that the coating of second coatings layer is acrylate paint；Preparation process is as follows:
(1) taking acrylic resin II by weight is 2~5 parts of acrylic acid, 10~40 parts of ethyl acrylate, methacrylic acid fourth
Acrylic resin is made through lotion or polymerisation in solution in 40~55 DEG C of 40~60h of reaction in 30~60 parts of ester, 5~10 parts of acrylonitrile
II is made acrylic resin II molecular weight and is greater than 150,000；
(2) above-mentioned acrylic resin II is taken, it is 1~7 that 10~30%, diameter is added by weight in acrylic resin II
μm organic elastomer microballoon, is made the acrylate paint of the second good coatings layer of high fillibility, high tenacity, bending resistance；
Number resistant to bending is greater than 80000.
It is preferred that the coating of second coatings layer is polyurethane coating, preparation process is as follows:
(1) take one of polyester polyol, polyether polyol, hydroxyl terminated polycarbonate of molecular weight 3000~5000 or
It is several, and one or more of hexamethylene diisocyanate, isophorone diisocyanate, by functional group's molar ratio 1.05
Organotin catalysts are added in~1.2:1, in 40~60 DEG C of 8~10h of reaction, are then warming up to 80~100 DEG C, 5~10h of reaction,
Synthesize hydroxyl-terminated polyurethane resin II molecular weight 3~60,000.
(2) above-mentioned polyurethane rubber II is taken, 10~30%, diameter 1 are added by its weight ratio into polyurethane resin II
~7 μm of organic elastomer microballoons, stir evenly, be made high fillibility, high tenacity, the second coatings layer of bending resistance apply
Material, number resistant to bending are greater than 80000.
It is preferred that the coating of second coatings layer is rubber coating；Preparation process is as follows:
The carboxy nitrile rubber or carboxylated nbr for taking molecular weight 20~300,000, to rubber coating by weight addition 10
~30%, diameter be 1~7 μm of organic elastomer microballoon, be made high fillibility, high tenacity, the second coatings of bending resistance
Coating, number resistant to bending are greater than 80000.
It is preferred that the matrix resin of the reflection of electromagnetic wave coating is acrylic type matrix resin；Preparation process
It is as follows:
(1) 7~15 parts of acrylic acid, 35~50 parts of acrylonitrile, 20~30 parts of butyl acrylate, acrylic acid hydroxyl second are taken by weight
20~30 parts of ester, above-mentioned raw materials are reacted into 10~20h at 60~80 DEG C, acrylic resin III is made by emulsion polymerization；System
Obtain acrylic resin III molecular weight 5~70,000.
(2) 50~70 parts of above-mentioned acrylic resin III, bisphenol A type epoxy resin, bisphenol F type epoxy tree are taken by weight
10~30 parts of one or more of polyfunctional epoxy resins such as rouge, novolac epoxy resin, 5~10 parts of dicyandiamide, diamino
5~10 parts of diphenyl sulphone (DPS), acrylic type matrix resin is made in uniform stirring；
It is preferred that the matrix resin of the reflection of electromagnetic wave coating is polyurethane-type matrix resin；Preparation process
It is as follows:
(1) polyester polyol for taking molecular weight 4000~6000, with toluene di-isocyanate(TDI), diphenylmethane diisocyanate
One or more of ester, benzene dimethylene diisocyanate, by functional group 1.3~1.5:1 of molar ratio, pre-polymerization is added organic
Hydroxyl terminated prepolymer is made in tin catalyst, 50~70 DEG C of 8~12h of reaction.
(2) 60~80 parts of above-mentioned hydroxyl terminated prepolymer, hexamethylene diisocyanate trimer or different Fo Er are taken by weight
1~10 part of ketone diisocyanate trimer, more officials such as bisphenol A type epoxy resin, bisphenol f type epoxy resin, novolac epoxy resin
10~20 parts of one or more of epoxy resin can be rolled into a ball, 10~20 parts of diaminodiphenylsulfone, polyurethane-type is made in uniform stirring
Matrix resin；
It is preferred that the matrix resin of the reflection of electromagnetic wave coating is rubber-type matrix resin；Preparation process is such as
Under:
Take carboxyl or 30~60 parts of carboxylated nbr by weight, bisphenol A type epoxy resin, bisphenol f type epoxy resin,
30~50 parts of one or more of novolac epoxy resin, polyfunctional epoxy resin, 5~10 parts of dicyandiamide, diamino hexichol
It 10~20 parts of sulfone, stirs evenly, rubber-type matrix resin is made.
Invention provides a kind of preparation method of FPC reflection-type electromagnetic shielding film herein, comprising the following steps:
The first step prepares the coating of the first coatings layer, the second coatings layer and reflection of electromagnetic wave coating；Described
The coating of one coatings layer is the acrylate paint or polyurethane coating of wear-resisting type, and wearability is greater than 1000 times；Described
The coating of two coatings layers is high filling, the acrylate paint of high tenacity or polyurethane coating or rubber coating, resistant to bending
Number is greater than 80000；The coating of the reflection of electromagnetic wave coating includes matrix resin and metal packing, and described matrix resin is third
Olefin(e) acid type or polyurethane-type or rubber-type, the metal packing are sheet silver packet glass or flaky silver coated copper powder or leaf shape silver packet
Copper powder or dendroid silver-coated copper powder；
The carrier film is matte release film；The metal packing in thickness direction having a size of 1~2 μm, planar dimension 3~
9 μm, there are 3~5 bifurcateds in metal packing described in leaf shape；The matrix resin of the reflection of electromagnetic wave coating is filled out with the metal
The ratio of material is 1:1.5~1:5；
Second step,
Greasy dirt and foreign matter on B4, removing carrier thin film volume inner face；
B5, pass through double mouth coating heads in carrier thin film volume inner face and be coated with simultaneously and above-mentioned prepare the first coatings layer and the
Two coatings layers, thickness are respectively 1~2 μm, 2~7 μm, through oven drying, the first coatings layer and second are made to insulate and apply
Bed of material solidification；Oven temperature is 60~120 DEG C, and linear velocity is 5~30m/min；
B6, it is coated with prepared reflection of electromagnetic wave coating in release protective film layer is incorporated to baking oven with a thickness of 5~10 μm
Dry, oven temperature is 60~120 DEG C；Linear velocity is 5~30m/min；
B7, the reflection of electromagnetic wave coating in the second coatings layer and release protective film layer on carrier thin film is subjected to heat
It presses compound；
B8, winding.
The present invention provides a kind of FPC reflection-type electromagnetic shielding film, including carrier film, be coated in carrier film first absolutely
Edge dope layer, the second coatings layer being coated in the first coatings layer, the electromagnetism being coated in the second coatings layer
Wave reflection coating；The reflection of electromagnetic wave coating is equipped with a leafing type protective film layer.
The present invention relates to a kind of FPC reflection-type electromagnetic shielding films and preparation method thereof, compared with existing design, advantage
It is: firstly, this patent metal packing uses sheet silver packet glass or silver-coated copper powder, leaf shape or dendroid silver-coated copper powder, with
The phase interconnection between reflection-type shielded layer, sheet or leaf shape or the realization of dendritic conductive filler is made by mixing in resin
It connects, realizes isotropic continuous conduction performance of long range, 1~2 μm of the thickness direction of conductive filler, 3~9 μ of planar dimension
M further has 3~5 bifurcateds, the overlap joint between being more advantageous to, to realize height on every leaf shape silver-coated copper powder
Shield effectiveness, shield effectiveness can be improved to 40dB.Metal packing is activated, and raising can be greatly reduced in conductivity.
Secondly, the first coatings layer of screened film of the present invention has wearability, wearability is greater than 1000 times, plays protection
The effect of electromagnetic membrane, the second coatings layer use high fillibility, high tenacity coating, guarantee product bending resistance, bending resistance
Greater than 80000 times, keep the flexibility, bending resistance, product planarization of bulk shielding film more preferable.
Further more, the insulating layer of screened film uses coating, including the first coatings layer and the second coatings in the present invention
Layer, carrier film are matte release film, and coating molecular weight is big, and proportion of filler is low, more soft；Crosslink density is small, high temperature resistant after crosslinking
High pressure will not become fragile, will not cracking, drug resistance water slug.First coatings layer is coated in matte release carrier film, by mute
The low-surface-energy of light release film, coating cannot soak well in release film surface, recessed due to dumb light film surface on microcosmic
Convex injustice can form local air-cushion between release film and dope layer, achieve the purpose that release film is separated with insulating layer.
Detailed description of the invention
Fig. 1 is longitudinal phase diagrammatic cross-section of the present invention.
Appended drawing reference is as follows:
1- carrier film, the first coatings layer of 2-, the second coatings layer of 3-, 4- reflection of electromagnetic wave coating, the release guarantor of 5-
Cuticular layer.
Specific embodiment
Referring to Fig. 1, a kind of FPC reflection-type electromagnetic shielding film of the invention, comprising: be coated with the dumb light carrier film of mould release
1, the first coatings layer 2 in carrier film 1, the second coatings layer 3 in the first coatings layer 2, are located at
Reflection of electromagnetic wave coating 4 in second coatings layer 3, that is, may make up the electromagnetic shielding film of four-layer structure.
Carrier film 1 is that Matte film applies mould release, solves the problems, such as insulating layer and carrier UF membrane.That is matte release film is thick
Degree is 25~100 μm, preferably 50 μm.Dumb light membrane material uses PET, PBT, PNT film, mould release using silicone release film or
Non-silicon release film need to meet and mould release not occur fall off.
Acrylate paint, polyurethane coating can be used in the coating of first coatings layer 2.With a thickness of 1~2 μm.
Acrylate paint, polyurethane coating or rubber coating can be used in the coating of second coatings layer 3.With a thickness of
2~7 μm.
Reflection of electromagnetic wave coating 4 includes matrix resin and metal packing, and matrix resin can be used acrylate paint, gather
Urethane coating or rubber coating.With a thickness of 5~10 μm.The metal packing is sheet silver packet glass or flaky silver coated copper powder or tree
Lobate silver-coated copper powder or dendroid silver-coated copper powder；The metal packing in thickness direction having a size of 1~2 μm, 3~9 μ of planar dimension
M has 3~5 bifurcateds in metal packing described in leaf shape；The matrix resin of the reflection of electromagnetic wave coating and the metal packing
Ratio be 1:1.5~1:5；
A leafing type protective film layer 5 is additionally provided on reflection of electromagnetic wave coating 4.Specifically, release protective film layer 5 is PET
One of release film, PP release film, PBT release film, release paper, release protective film with a thickness of 25~100 μm, preferably 50
μm。
Below in conjunction with detailed description of the invention by specific embodiments.
Embodiment 1
The first coatings layer of preparation, the second coatings layer and the electricity of FPC of the invention reflection-type electromagnetic shielding film
The coating of magnetic wave reflectance coating uses acrylic coating, and the manufacturing process that can be used is as follows.
The first step prepares the coating of the first coatings layer, the second coatings layer and reflection of electromagnetic wave coating, can be by
It is prepared according to following sequence, but its protection scope does not limit to the sequence with following A1, A2, A3.
A1, the first coatings coating of preparation；
(1) 7 parts of acrylic acid, 20 parts of methyl acrylate, 45 parts of acrylonitrile, 20 parts of butyl acrylate, isobomyl acrylate are taken
7 parts of ester are made acrylic resin I by emulsion polymerization or polymerisation in solution or bulk polymerization, by weight addition persulfate
0.3%~1.2%, in 50~60 DEG C, 30~60h of reaction, it polymerize and acrylic resin I molecular weight is made greater than 100,000.
(2) above-mentioned acrylic resin I is taken, and by weight addition 15% colour carbon black, 7% titanium in acrylic resin I
White powder, 10% silica, 1~5% propylene acid as curing agent, stir evenly, and the first coatings of wear-resisting type coating is made.Performance
It is shown in Table 1.
A2, the second coatings coating of preparation；
(1) take 4 parts of acrylic acid, 25 parts of ethyl acrylate, 45 parts of butyl methacrylate, 7 parts of acrylonitrile process lotions poly-
Close or polymerisation in solution be made acrylic resin II, by weight percentage addition persulfate 0.3%~1.2%, 40~55 DEG C,
40~60h is reacted, acrylic resin II molecular weight is made and is greater than 150,000.
(2) above-mentioned acrylic resin II is taken, it is micro- by weight 20% diameter, 4 μm of polyurethane are added in acrylic resin II
Ball elastomer (Zhejiang Donghua Industry Co., Ltd), be added 1~5% propylene acid as curing agent, stir evenly, be made high fillibility,
Second coatings coating of high tenacity.Performance is shown in Table 1.
A3, preparation reflection of electromagnetic wave coated coating；
(1) 11 parts of acrylic acid, 43 parts of acrylonitrile, 25 parts of butyl acrylate, 25 parts of hydroxy-ethyl acrylate are taken, by above-mentioned raw materials
Acrylic resin III is made by emulsion polymerization, by weight percentage addition persulfate 0.3%~1.2%, 60~80
DEG C, reaction 10~20h, acrylic resin III molecular weight 5~70,000.
(2) above-mentioned acrylic resin III60 parts are taken, 20 parts of bisphenol A type epoxy resin, 7 parts of dicyandiamide, diaminodiphenylsulfone
7 parts, acrylic type matrix resin is made in uniform stirring；
(3) metal packing is sheet silver packet glass, takes sheet silver packet glass (plate nitre, S2015), thickness direction 1~2 is micro-
Rice, 3~9 microns of planar dimension, every conducting powder has 3~5 bifurcateds, and activated dose of ultrasonic activation obtains activation screen afterwards for 24 hours
Slurry is covered, conducting powder activator is silane coupling agent or titanate coupling agent.
(4) it takes above-mentioned acrylic type matrix resin and above-mentioned evaporation shield slurry to arrange by the ratio of 1:1 to be uniformly mixed, obtains electricity
The coating of magnetic wave reflectance coating, shield effectiveness are shown in Table 1.
Second step, coating
Greasy dirt and foreign matter on A4, removing carrier thin film volume inner face；
A5, it is coated with prepared first coatings layer on carrier thin film volume inner face, it is dry through baking oven with a thickness of 1~2 μm
It is dry to solidify the first coatings layer；Oven temperature is 60~120 DEG C, preferably 90 DEG C；Linear velocity is 5~30m/min, preferably
For 20m/min；
A6, prepared second coatings layer is coated in the first coatings layer, it is dry through baking oven with a thickness of 2~7 μm
It is dry to solidify the second coatings layer；Oven temperature is 60~120 DEG C, preferably 90 DEG C；Linear velocity is 5~30m/min, preferably
For 20m/min；
A7, it is coated with prepared reflection of electromagnetic wave coating in the second coatings layer, with a thickness of 5~10 μm, is incorporated to baking
Case is dry, and oven temperature is 60~120 DEG C, preferably 90 DEG C；Linear velocity is
5~30m/min, preferably 20m/min；
A8, the one leafing type protective film layer of thermal-adhering on reflection of electromagnetic wave coating；
A9, winding.
Embodiment 2
The present embodiment FPC is substantially the same manner as Example 1 with the manufacturing process of reflection-type electromagnetic shielding film, except that A1
In the first coatings coating, in A2 in the second coatings coating and A3 reflection of electromagnetic wave coated coating group distribution
Than:
Each raw material proportioning that acrylic resin I is made in A1 is different, acrylic acid, methyl acrylate, acrylonitrile, acrylic acid fourth
Ester, isobornyl acrylate additive amount be respectively 3,10,30,10,5 parts；Pigment is added in above-mentioned gained acrylic resin I
Carbon black, titanium dioxide, silica amount be respectively 10%, 3%, 5%.
Each raw material proportioning that acrylic resin II is made in A2 is different, acrylic acid, ethyl acrylate, methacrylic acid fourth
Ester, acrylonitrile additive amount be respectively 2,10,30,5 parts；The amount of organic elastomer microballoon is added in above-mentioned gained acrylic resin II
It is 10%, partial size is 7 μm.
Each raw material proportioning that acrylic resin III is made in A3 is different, acrylic acid, acrylonitrile, butyl acrylate, acrylic acid
The additive amount of hydroxyl ethyl ester is respectively 7,35,20,20 parts；The raw material proportioning that acrylic type shielded layer matrix resin is made is different, double
Phenol F type epoxy resin substitutes bisphenol A type epoxy resin, acrylic resin III, bisphenol f type epoxy resin, dicyandiamide, diamino
The additional amount of diphenyl sulphone (DPS) is respectively 50,10,5,5 parts.
Metal packing is flaky silver coated copper powder, takes flaky silver coated copper powder (Mitsui Metal Co., Ltd. 1100YP, ball milling, after the sieving of 400 mesh
It uses；Or FUKUDA METAL, 5 μm of Cu-HWQ of 10%Ag コ ー ト are directly used), activated dose of ultrasonic activation obtains afterwards for 24 hours
Evaporation shield slurry.
It takes above-mentioned acrylic type matrix resin and above-mentioned evaporation shield slurry to arrange by the ratio of 1:5 to be uniformly mixed, obtains electromagnetism
The coating of wave reflection coating.
Embodiment 3
The present embodiment FPC is substantially the same manner as Example 1 with the manufacturing process of reflection-type electromagnetic shielding film, except that A1
In the first coatings coating, in A2 in the second coatings coating and A3 reflection of electromagnetic wave coated coating group distribution
Than:
Each raw material proportioning that acrylic resin I is made in A1 is different, acrylic acid, methyl acrylate, acrylonitrile, acrylic acid fourth
Ester, isobornyl acrylate additive amount be respectively 10,30,60,30,10 parts；Color is added in above-mentioned gained acrylic resin I
Plain carbon black, titanium dioxide, silica amount be respectively 20%, 10%, 15%.
Each raw material proportioning that acrylic resin II is made in A2 is different, acrylic acid, ethyl acrylate, methacrylic acid fourth
Ester, acrylonitrile additive amount be respectively 5,40,60,10 parts；Organic elastomer microballoon is added in above-mentioned gained acrylic resin II
Amount is 30%, and partial size is 1 μm.
Each raw material proportioning that acrylic resin III is made in A3 is different, acrylic acid, acrylonitrile, butyl acrylate, acrylic acid
The additive amount of hydroxyl ethyl ester is respectively 15,50,30,30 parts；The raw material proportioning that acrylic type shielded layer matrix resin is made is different, phenol
Urea formaldehyde substitute bisphenol A type epoxy resin, acrylic resin III, phenolic resin, dicyandiamide, diaminodiphenylsulfone additional amount
Respectively 70,30,10,10 parts.
Take flaky silver coated copper powder (Mitsui Metal Co., Ltd. 1100YP, ball milling, the 400 mesh mistakes of 1~2 μm of thickness, 3~9 μm of planar dimension
It is used after sieve；Or FUKUDA METAL, 5 μm of Cu-HWQ of 10%Ag コ ー ト, directly use), activated dose of ultrasonic activation for 24 hours after
Obtain evaporation shield slurry.
It takes above-mentioned acrylic type matrix resin and above-mentioned evaporation shield slurry to arrange by the ratio of 1.5:1 to be uniformly mixed, obtains electricity
The coating of magnetic wave reflectance coating.
Embodiment 4
The first coatings layer of preparation, the second coatings layer and the electricity of FPC of the invention reflection-type electromagnetic shielding film
The coating of magnetic wave reflectance coating uses polyurethane coating, and the manufacturing process that can be used is as follows.
The first step prepares the coating of the first coatings layer, the second coatings layer and reflection of electromagnetic wave coating, can be by
It is prepared according to following sequence, but its protection scope does not limit to the sequence with following B1, B2, B3.
B1, the first coatings layer of preparation；
(1) polyester polyol (PEPA) and toluene di-isocyanate(TDI) (TDI) for taking molecular weight 1000~2000, by functional group
Molar ratio 1.2:1 synthesizes hydroxyl-terminated polyurethane resin I, 0.5~1% organotin catalysts of resin solids weight ratios is added, 40
~60 DEG C, 8~10h of reaction, are then warming up to 80~100 DEG C of 5~10h of reaction, synthesize hydroxyl-terminated polyurethane resin I molecular weight 1
~3 ten thousand.
(2) above-mentioned polyurethane resin I is taken, and in polyurethane resin I by weight addition 15% colour carbon black, 7% titanium white
Powder, 10% silica are added polyurethane curing agent 1~5%, stir evenly, and the first coatings of wear-resisting type coating is made.Property
Energy parameter is shown in Table 1.
B 2, the second coatings layer of preparation；
(1) polyester polyol (PEPA), the hexamethylene diisocyanate (HDI) for taking molecular weight 3000~5000, by official
Molar ratio 1.1:1 can be rolled into a ball, hydroxyl-terminated polyurethane rubber II is synthesized.It is organotin catalyzed that resin solids weight ratios 0.5~1% are added
Then agent is warming up to 80~100 DEG C of 5~10h of reaction, synthesizes hydroxyl-terminated polyurethane resin II in 40~60 DEG C, 8~10h of reaction
Molecular weight 3~60,000.
(2) above-mentioned polyurethane rubber II is taken, it is micro- by weight 20% diameter, 4 μm of polyurethane are added in polyurethane rubber II
Ball elastomer (Zhejiang Donghua Industry Co., Ltd) is added polyurethane curing agent, stirs evenly, high fillibility, high tenacity is made
The second coatings coating, performance parameter is shown in Table 1.
B3, preparation reflection of electromagnetic wave coated coating；
(1) polyester polyol (PEPA) and toluene di-isocyanate(TDI) (TDI) for taking molecular weight 4000~6000 are by functional group
Molar ratio 1.4:1, pre-polymerization, be added resin solids weight ratios 0.5~1% organotin catalysts, 50~70 DEG C, reaction 8~
Hydroxyl terminated prepolymer is made in 12h.
(2) 60 parts of above-mentioned hydroxyl terminated prepolymer, 5 parts of tripolymer of hexamethylene diisocyanate (HDI), bisphenol-A type ring are taken
15 parts of oxygen resin, 15 parts of diaminodiphenylsulfone, polyurethane-type matrix resin is made in uniform stirring；
(3) metal packing is flaky silver coated copper powder, takes flaky silver coated copper powder (Mitsui Metal Co., Ltd. 1100YP, ball milling, 400 mesh mistakes
It is used after sieve；Or FUKUDA METAL, 5 μm of Cu-HWQ of 10%Ag コ ー ト are directly used), 1~2 micron of thickness direction, plane meter
Very little 3~9 microns, there are 3~5 bifurcateds on every leaf shape silver-coated copper powder, obtains evaporation shield slurry after for 24 hours through ultrasonic activation
Material.
(4) it takes above-mentioned polyurethane-type matrix resin and above-mentioned evaporation shield slurry to arrange by the ratio of 1:1 to be uniformly mixed, obtains electricity
The coating of magnetic wave reflectance coating.
Second step, coating
Greasy dirt and foreign matter on B4, removing carrier thin film volume inner face；
B5, pass through double mouth coating heads in carrier thin film volume inner face and be coated with simultaneously and above-mentioned prepare 2 and of the first coatings layer
Second coatings layer 3, thickness are respectively 1~2 μm, 2~7 μm, through oven drying, make the first coatings layer 2 and second absolutely
Edge dope layer 3 solidifies；Oven temperature is 60~120 DEG C, and linear velocity is 5~30m/min；Oven temperature is 60~120 DEG C, preferably
It is 90 DEG C；Efficiency, product yield can be improved in bilayer coating.
B6, it is coated with prepared reflection of electromagnetic wave coating on release film layer is incorporated to oven drying with a thickness of 5~10 μm,
Oven temperature is 60~120 DEG C, preferably 90 DEG C；Linear velocity is 5~30m/min, preferably 20m/min；
B7, the second coatings layer 3 on carrier thin film is subjected to hot pressing with the reflection of electromagnetic wave coating 4 on release film layer
It is compound；
B8, winding.
Embodiment 5
The present embodiment FPC is substantially the same manner as Example 4 with the manufacturing process of reflection-type electromagnetic shielding film, except that B1
In the first coatings coating, in B2 in the second coatings coating and B3 reflection of electromagnetic wave coated coating group distribution
Than:
Polyether polyol (PPG) replaces polyester polyol (PEPA) in B1, and methyl diphenylene diisocyanate (MDI) replaces
Toluene di-isocyanate(TDI) (TDI), the two functional group molar ratio are 1.1:1, and hydroxyl-terminated polyurethane resin is made；At above-mentioned gained end
In hydroxyl polyurethane resin I be added colour carbon black, titanium dioxide, silica amount be respectively 10%, 3%, 5%.
Polyether polyol (PPG) replaces both polyester polyol (PEPA) and hexamethylene diisocyanate (HDI) in B2
Functional group's molar ratio is 1.05:1；It is 10% in the amount that polyaminoester microball elastomer is added in above-mentioned gained polyurethane resin II, grain
Diameter is 7 μm.
Methyl diphenylene diisocyanate (MDI) replaces toluene di-isocyanate(TDI) (TDI) in B3, polyester polyol (PEPA)
Functional group's molar ratio with it is 1.3:1, and hydroxyl terminated prepolymer is made；Bisphenol f type epoxy resin replaces bisphenol type epoxy tree
Rouge, above-mentioned gained hydroxyl terminated prepolymer, hexamethylene diisocyanate (HDI) tripolymer, bisphenol f type epoxy resin, diamino
The additive amount of diphenyl sulphone (DPS) is respectively 60,1,10,10, and polyurethane-type shielded layer matrix resin is made.
Metal packing is leaf shape silver-coated copper powder, takes the leaf shape silver-coated copper powder of 1~2 μm of thickness, 3~9 μm of planar dimension,
Evaporation shield slurry is obtained after for 24 hours through ultrasonic activation.
It takes above-mentioned polyurethane-type shielded layer matrix resin and above-mentioned evaporation shield slurry to arrange by the ratio of 1:5 to be uniformly mixed, obtain
To the coating of reflection of electromagnetic wave coating.
Embodiment 6
The present embodiment FPC is substantially the same manner as Example 4 with the manufacturing process of reflection-type electromagnetic shielding film, except that B1
In the first coatings coating, in B2 in the second coatings coating and B3 reflection of electromagnetic wave coated coating group distribution
Than:
Hydroxyl terminated polycarbonate (PC) replaces polyester polyol (PEPA) in B1, benzene dimethylene diisocyanate (XDI)
Instead of toluene di-isocyanate(TDI) (TDI), the two functional group molar ratio is 1.3:1, and hydroxyl-terminated polyurethane resin is made；In above-mentioned institute
Be added in hydroxyl-terminated polyurethane resin I colour carbon black, titanium dioxide, silica amount be respectively 20%, 10%, 15%.
Hydroxyl terminated polycarbonate (PC) replaces polyester polyol (PEPA) in B2, isophorone diisocyanate (IPDI) generation
For hexamethylene diisocyanate (HDI), the two functional group molar ratio is 1.2:1, and polyurethane resin is made；It is poly- in above-mentioned gained
The amount that polyaminoester microball elastomer (Zhejiang Donghua Industry Co., Ltd) is added in urethane resin II is 30%, and partial size is 1 μm.
Benzene dimethylene diisocyanate (XDI) replaces toluene di-isocyanate(TDI) (TDI) in B3, polyester polyol (PEPA)
Functional group's molar ratio with it is 1.5:1, and hydroxyl terminated prepolymer is made；Novolac epoxy resin replaces bisphenol A type epoxy resin, different
Isophorone diisocyanate (IPDI) replace hexamethylene diisocyanate (HDI) tripolymer, above-mentioned gained hydroxyl terminated prepolymer,
Novolac epoxy resin, isophorone diisocyanate (IPDI), diaminodiphenylsulfone additive amount be respectively 80,10,20,20,
Polyurethane-type shielded layer matrix resin is made.
Metal packing is leaf shape silver-coated copper powder, takes the leaf shape silver-coated copper powder of 1~2 μm of thickness, 3~9 μm of planar dimension,
Activated dose of ultrasonic activation obtains evaporation shield slurry afterwards for 24 hours.
It takes above-mentioned polyurethane-type shielded layer matrix resin and above-mentioned evaporation shield slurry to arrange by the ratio of 1.5:5 to be uniformly mixed,
Obtain the coating of reflection of electromagnetic wave coating.
Embodiment 7
The present embodiment FPC is substantially the same manner as Example 1 with the manufacturing process of reflection-type electromagnetic shielding film, except that:
The first step configures in coating, and the acrylic resin II in the second coatings coating replaces with the carboxyl of molecular weight 20~300,000
Nitrile rubber or carboxylated nbr；Acrylic type matrix resin in reflection of electromagnetic wave coating 4 replaces with rubber mold base tree
Rouge, carboxyl or 30~60 parts of carboxylated nbr, bisphenol A type epoxy resin, bisphenol f type epoxy resin, novolac epoxy resin,
30~50 parts of one or more of polyfunctional epoxy resin, 5~10 parts of dicyandiamide, 10~20 parts of diaminodiphenylsulfone,
Even stirring obtains rubber-type matrix resin.As a kind of preferred embodiment, carboxyl or 45 parts of carboxylated nbr, bisphenol A-type
40 parts of one or more of epoxy resin, bisphenol f type epoxy resin, novolac epoxy resin, polyfunctional epoxy resin, double cyanogen
7 parts of ammonia, 15 parts of diaminodiphenylsulfone.Each film performance detection is shown in Table 1.
Each film performance testing result of table 1
Claims (11)
1. a kind of FPC preparation method of reflection-type electromagnetic shielding film, which comprises the following steps:
The first step prepares the coating of the first coatings layer, the second coatings layer and reflection of electromagnetic wave coating；Described first absolutely
The coating of edge dope layer (2) is the acrylate paint or polyurethane coating of wear-resisting type, and wearability is greater than 1000 times；Described second
The coating of coatings layer (3) is high filling, the acrylate paint of high tenacity or polyurethane coating or rubber coating, resistant to bending
Number is greater than 80000；The coating of the reflection of electromagnetic wave coating includes matrix resin and metal packing, and described matrix resin is third
Olefin(e) acid type or polyurethane-type or rubber-type, the metal packing are sheet silver packet glass or flaky silver coated copper powder or leaf shape silver packet
Copper powder or dendroid silver-coated copper powder；
The carrier film (1) is matte release film；The metal packing in thickness direction having a size of 1~2 μm, planar dimension 3~9
μm, there are 3~5 bifurcateds in metal packing described in leaf shape；The matrix resin and the metal of the reflection of electromagnetic wave coating (4)
The ratio of filler is 1:1.5~1:5；
Second step, coating
Greasy dirt and foreign matter on A4, removing carrier thin film (1) volume inner face；
A5, it is coated with prepared first coatings layer (2) on carrier thin film (1) volume inner face, with a thickness of 1~2 μm, through baking oven
It is dry to solidify the first coatings layer；Oven temperature is 60~120 DEG C；Linear velocity is 5~30m/min；
A6, prepared second coatings layer (3) is coated on the first coatings layer (2), with a thickness of 2~7 μm, through baking oven
It is dry to solidify the second coatings layer；Oven temperature is 60~120 DEG C；Linear velocity is 5~30m/min；
A7, it is coated with prepared reflection of electromagnetic wave coating (4) on the second coatings layer (3) is incorporated to a thickness of 5~10 μm
Oven drying, oven temperature are 60~120 DEG C；Linear velocity is 5~30m/min；
A8, the one leafing type protective film layer (5) of thermal-adhering on reflection of electromagnetic wave coating；
A9, winding.
2. a kind of preparation method of FPC reflection-type electromagnetic shielding film according to claim 1, it is characterised in that: described
The coating of first coatings layer (2) is acrylate paint；Preparation process is as follows:
(1) take by weight 3~10 parts, 10~30 parts of methyl acrylate, 30~60 parts of acrylonitrile, 10~30 parts of butyl acrylate,
5~10 parts of isobornyl acrylate, third is made by lotion or solution or bulk polymerization in 50~60 DEG C, 30~60h of reaction
Olefin(e) acid resin I polymerize and acrylic resin I molecular weight is made greater than 100,000；
(2) take above-mentioned acrylic resin I, and in acrylic resin I by weight be added 10%~20% colour carbon black, 3~
10% titanium dioxide, 5~15% silica, 1~5% propylene acid as curing agent, stir evenly, and the first coatings layer of wear-resisting type is made
Coating, wearability are more than 1000 times.
3. a kind of preparation method of FPC reflection-type electromagnetic shielding film according to claim 1, it is characterised in that: described
The coating of first coatings layer (2) is polyurethane coating, and preparation process is as follows:
(1) one of polyester polyol, polyether polyol, hydroxyl terminated polycarbonate of molecular weight 1000~2000 or several is taken
Kind, and one or more of toluene di-isocyanate(TDI), methyl diphenylene diisocyanate, benzene dimethylene diisocyanate,
By functional group 1.1~1.3:1 of molar ratio, organotin catalysts are added, in 40~60 DEG C of 8~10h of reaction, then it is warming up to 80~
100 DEG C of 5~10h of reaction synthesize hydroxyl-terminated polyurethane resin I molecular weight 1~30,000.
(2) take above-mentioned polyurethane resin I, and polyurethane resin I by weight be added 10%~20% colour carbon black, 3~
10% titanium dioxide, 5~15% silica, 1~5% polyurethane curing agent, stir evenly, and the first coatings layer of wear-resisting type is made
Coating, wearability meet more than 1000 times.
4. a kind of preparation method of FPC reflection-type electromagnetic shielding film according to claim 1, it is characterised in that: described
The coating of second coatings layer (3) is acrylate paint；Preparation process is as follows:
(1) taking acrylic resin II by weight is 2~5 parts of acrylic acid, 10~40 parts of ethyl acrylate, butyl methacrylate 30
Acrylic resin II is made through lotion or polymerisation in solution in 40~55 DEG C of 40~60h of reaction in~60 parts, 5~10 parts of acrylonitrile,
Acrylic resin II molecular weight is made and is greater than 150,000；
(2) above-mentioned acrylic resin II is taken, is had in acrylic resin II by weight addition 10~30%, diameter for 1~7 μm
The acrylate paint of the second good coatings layer of high fillibility, high tenacity, bending resistance is made in machine elastic microsphere；Bending resistance
It rolls over number and is greater than 80000.
5. a kind of preparation method of FPC reflection-type electromagnetic shielding film according to claim 1, it is characterised in that: described
The coating of second coatings layer (3) is polyurethane coating, and preparation process is as follows:
(1) one of polyester polyol, polyether polyol, hydroxyl terminated polycarbonate of molecular weight 3000~5000 or several is taken
Kind, and one or more of hexamethylene diisocyanate, isophorone diisocyanate, by functional group's molar ratio 1.05~
Organotin catalysts are added in 1.2:1, in 40~60 DEG C of 8~10h of reaction, are then warming up to 80~100 DEG C, 5~10h of reaction, close
At hydroxyl-terminated polyurethane resin II molecular weight 3~60,000.
(2) above-mentioned polyurethane rubber II is taken, it is 1~7 μm that 10~30%, diameter, which is added, by its weight ratio into polyurethane resin II
Organic elastomer microballoon, stirs evenly, be made high fillibility, high tenacity, bending resistance the second coatings coating, bending resistance
It rolls over number and is greater than 80000.
6. a kind of preparation method of FPC reflection-type electromagnetic shielding film according to claim 1, it is characterised in that: described
The coating of second coatings layer (3) is rubber coating；Preparation process is as follows:
The carboxy nitrile rubber or carboxylated nbr for taking molecular weight 20~300,000, to rubber coating by weight be added 10~
30%, diameter be 1~7 μm of organic elastomer microballoon, be made high fillibility, high tenacity, the second coatings layer of bending resistance
Coating, number resistant to bending are greater than 80000.
7. a kind of preparation method of FPC reflection-type electromagnetic shielding film according to claim 1, it is characterised in that: described
The matrix resin of reflection of electromagnetic wave coating (4) is acrylic type matrix resin；Preparation process is as follows:
(1) 7~15 parts of acrylic acid, 35~50 parts of acrylonitrile, 20~30 parts of butyl acrylate, hydroxy-ethyl acrylate 20 are taken by weight
~30 parts, above-mentioned raw materials are reacted into 10~20h at 60~80 DEG C, acrylic resin III is made by emulsion polymerization；It is made third
Olefin(e) acid resin III molecular weight 5~70,000.
(2) 50~70 parts of above-mentioned acrylic resin III, bisphenol A type epoxy resin, bisphenol f type epoxy resin, phenol are taken by weight
10~30 parts of one or more of polyfunctional epoxy resins such as formaldehyde epoxy resin, 5~10 parts of dicyandiamide, diaminodiphenylsulfone
5~10 parts, acrylic type matrix resin is made in uniform stirring.
8. a kind of preparation method of FPC reflection-type electromagnetic shielding film according to claim 1, it is characterised in that: described
The matrix resin of reflection of electromagnetic wave coating (4) is polyurethane-type matrix resin；Preparation process is as follows:
(1) polyester polyol for taking molecular weight 4000~6000, with toluene di-isocyanate(TDI), methyl diphenylene diisocyanate,
One or more of benzene dimethylene diisocyanate, by functional group 1.3~1.5:1 of molar ratio, pre-polymerization is added organotin and urges
Hydroxyl terminated prepolymer is made in agent, 50~70 DEG C of 8~12h of reaction.
(2) 60~80 parts of above-mentioned hydroxyl terminated prepolymer, hexamethylene diisocyanate trimer or isophorone two are taken by weight
1~10 part of isocyanate trimer, the polyfunctional groups such as bisphenol A type epoxy resin, bisphenol f type epoxy resin, novolac epoxy resin
10~20 parts of one or more of epoxy resin, 10~20 parts of diaminodiphenylsulfone, polyurethane-type matrix is made in uniform stirring
Resin.
9. a kind of preparation method of FPC reflection-type electromagnetic shielding film according to claim 1, it is characterised in that: described
The matrix resin of reflection of electromagnetic wave coating (4) is rubber-type matrix resin；Preparation process is as follows:
Carboxyl or 30~60 parts of carboxylated nbr, bisphenol A type epoxy resin, bisphenol f type epoxy resin, phenolic aldehyde are taken by weight
30~50 parts of one or more of epoxy resin, polyfunctional epoxy resin, 5~10 parts of dicyandiamide, diaminodiphenylsulfone 10
It~20 parts, stirs evenly, rubber-type matrix resin is made.
10. a kind of FPC preparation method of reflection-type electromagnetic shielding film, which comprises the following steps:
The first step prepares the coating of the first coatings layer, the second coatings layer and reflection of electromagnetic wave coating；Described first absolutely
The coating of edge dope layer (2) is the acrylate paint or polyurethane coating of wear-resisting type, and wearability is greater than 1000 times；Described second
The coating of coatings layer (3) is high filling, the acrylate paint of high tenacity or polyurethane coating or rubber coating, resistant to bending
Number is greater than 80000；The coating of the reflection of electromagnetic wave coating includes matrix resin and metal packing, and described matrix resin is third
Olefin(e) acid type or polyurethane-type or rubber-type, the metal packing are sheet silver packet glass or flaky silver coated copper powder or leaf shape silver packet
Copper powder or dendroid silver-coated copper powder；
The carrier film (1) is matte release film；The metal packing in thickness direction having a size of 1~2 μm, planar dimension 3~9
μm, there are 3~5 bifurcateds in metal packing described in leaf shape；The matrix resin and the metal of the reflection of electromagnetic wave coating (4)
The ratio of filler is 1:1.5~1:5；
Second step,
Greasy dirt and foreign matter on B4, removing carrier thin film (1) volume inner face；
B5, pass through double mouth coating heads in carrier thin film volume inner face and be coated with simultaneously and above-mentioned prepare the first coatings layer (2) and the
Two coatings layers (3), thickness are respectively that 1~2 μm, 2~7 μm through oven drying make the first coatings layer (2) and second
Coatings layer (3) solidification；Oven temperature is 60~120 DEG C, and linear velocity is 5~30m/min；
B6, it is coated with prepared reflection of electromagnetic wave coating (4) on release protective film layer (5) is incorporated to baking with a thickness of 5~10 μm
Case is dry, and oven temperature is 60~120 DEG C；Linear velocity is 5~30m/min；
B7, by carrier thin film the second coatings layer (3) and release protective film layer (5) on reflection of electromagnetic wave coating (4)
It is compound to carry out hot pressing；
B8, winding.
11. FPC reflection-type electromagnetic shielding film made of a kind of method using claim 1 or 10, it is characterised in that: including
Carrier film (1), the first coatings layer (2) being coated on carrier film (1), be coated on the first coatings layer (2)
Two coatings layers (3), the reflection of electromagnetic wave coating (4) being coated on the second coatings layer (3)；The reflection of electromagnetic wave applies
Layer (4) is equipped with a leafing type protective film layer (5).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655957A (en) * | 2019-01-08 | 2019-04-19 | 昆山工研院新型平板显示技术中心有限公司 | Polaroid and preparation method thereof, display panel and display equipment |
| WO2020020196A1 (en) * | 2018-07-25 | 2020-01-30 | 深圳市弘海电子材料技术有限公司 | Double-layer electromagnetic shielding film and manufacturing method therefor |
| CN110839339A (en) * | 2019-11-26 | 2020-02-25 | 苏州城邦达益材料科技有限公司 | Bendable electromagnetic shielding film and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328074A (en) * | 2000-06-14 | 2001-12-26 | 北京燕山石油化工公司研究院 | Composite aqueous latex containing electrically conducting polymer and insulating components and its preparing process and application |
| CN102711428A (en) * | 2012-06-21 | 2012-10-03 | 广州方邦电子有限公司 | Ultrathin shielding film with high shielding efficiency and production method thereof |
| CN103619155A (en) * | 2013-12-09 | 2014-03-05 | 保定乐凯新材料股份有限公司 | Electromagnetic wave shielding film with high barrier property |
| CN105120643A (en) * | 2015-06-30 | 2015-12-02 | 保定乐凯新材料股份有限公司 | Thermoplastic electromagnetic wave shielding film used for rapid processing |
| CN106010141A (en) * | 2016-06-30 | 2016-10-12 | 宁波江东波莫纳电子科技有限公司 | Preparation method of uniform antistatic paint |
| CN107118489A (en) * | 2017-05-12 | 2017-09-01 | 四川恒领皓睿塑胶科技有限公司 | Polymer-matrix electric conduction method for producing elastomers |
-
2018
- 2018-07-25 CN CN201810828547.9A patent/CN109068554B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328074A (en) * | 2000-06-14 | 2001-12-26 | 北京燕山石油化工公司研究院 | Composite aqueous latex containing electrically conducting polymer and insulating components and its preparing process and application |
| CN102711428A (en) * | 2012-06-21 | 2012-10-03 | 广州方邦电子有限公司 | Ultrathin shielding film with high shielding efficiency and production method thereof |
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| CN109655957B (en) * | 2019-01-08 | 2021-06-22 | 昆山工研院新型平板显示技术中心有限公司 | Polaroid and manufacturing method thereof, display panel and display device |
| CN110839339A (en) * | 2019-11-26 | 2020-02-25 | 苏州城邦达益材料科技有限公司 | Bendable electromagnetic shielding film and preparation method thereof |
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