CN113969120A - Electromagnetic shielding cloth and manufacturing method thereof - Google Patents
Electromagnetic shielding cloth and manufacturing method thereof Download PDFInfo
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- CN113969120A CN113969120A CN202010720894.7A CN202010720894A CN113969120A CN 113969120 A CN113969120 A CN 113969120A CN 202010720894 A CN202010720894 A CN 202010720894A CN 113969120 A CN113969120 A CN 113969120A
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives 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; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0862—Nickel
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
- D06M2101/36—Aromatic polyamides
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Laminated Bodies (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses electromagnetic shielding cloth which comprises a base cloth layer, wherein a first electromagnetic shielding layer and a second electromagnetic shielding layer are coated on the upper surface and the lower surface of the base cloth layer, a first conductive copper cloth layer is coated on the surface of the first electromagnetic shielding layer, a second conductive copper cloth layer is coated on the surface of the second electromagnetic shielding layer, a silver conductive film is arranged on the surface of the first conductive copper cloth layer, and an acrylic acid pressure-sensitive adhesive glue layer is arranged on the surface of the second conductive copper cloth layer. The vacuum plating process is adopted, so that the generation of sewage is effectively reduced, the environmental pollution is reduced, the cost is reduced, the efficiency is improved, the glue permeation to the surface is avoided in the using process, the first electromagnetic shielding layer and the second electromagnetic shielding layer are prevented from being oxidized, and the superior performance is kept.
Description
Technical Field
The invention relates to the technical field of electromagnetic shielding cloth, in particular to electromagnetic shielding cloth.
Background
With the continuous development of the technology level, 3C products such as notebook computers, GPS, IPAD and mobile phones have become an indispensable part of people's daily life, and they bring convenience to our life and also pose hidden dangers to people's health. These electronic products emit high frequency electromagnetic waves when used, and if a human body is exposed to strong electromagnetic waves for a long time, the health of the body is affected, and even cancer lesions are induced. In addition, as the working field environment of modern electronic products is increasingly complex, and many electronic products are complex systems with a mixture of digital and analog systems, the damage of electromagnetic radiation from the outside of the products and electromagnetic interference between internal systems, transmission channels and internal components to various useful information of the products has seriously threatened the stability, reliability and safety of the products, so that the prevention of electromagnetic interference has become one of the more and more focuses of people.
The existing electromagnetic shielding cloth has low porosity, low protective performance, limited application range, low corrosion resistance, low wear resistance, low gloss and aesthetic property, short service life, low durability, weak binding force of a plating layer, poor reflection capability, inconvenience in fixed installation and easy performance attenuation caused by oxidation of a surface nickel layer.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the electromagnetic shielding cloth, and solves the problems that the existing electromagnetic shielding cloth is low in porosity, low in protective performance, limited in application range, low in corrosion resistance, low in wear resistance, low in gloss and aesthetic property, short in service life, not durable, weak in coating binding force, poor in reflection capability, inconvenient to fix and install, and easy to oxidize a surface nickel layer to cause performance attenuation.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an electromagnetic shielding cloth, includes the base cloth layer, the upper and lower surface coating on base cloth layer has first electromagnetic shield layer and second electromagnetic shield layer, and the surface coating on first electromagnetic shield layer has first electrically conductive copper cloth layer, and the surface coating on second electromagnetic shield layer has the electrically conductive copper cloth layer of second, and the surface on first electrically conductive copper cloth layer is equipped with the silver-colored conducting film, and the surface on the electrically conductive copper cloth layer of second is equipped with acrylic acid pressure sensitive adhesive glue layer.
Preferably, the base cloth layer is a blended cloth of aramid fibers and polyamide fibers, the blended cloth is formed by crosswise weaving warps and wefts, and a plain weave structure or a twill weave structure is arranged between the warps and the wefts.
Preferably, the first electromagnetic shielding layer and the second electromagnetic shielding layer are nickel plating layers or aluminum plating layers.
Preferably, the silver conductive film is an aluminum paste coating. In order to ensure the electromagnetic shielding effect and control the cost, the nickel plating layer is formed by one-time plating in a vacuum aluminum plating mode, the thickness range of the nickel plating layer is 2-5 mu m, and the meshes of the base cloth layer are required to be ensured not to be blocked so as to ensure good air permeability; the first conductive copper cloth layer and the second conductive copper cloth layer are thinner than the first electromagnetic shielding layer and the second electromagnetic shielding layer respectively, and only one layer is plated, and the thickness range is 0.4-0.6 mu m.
Preferably, the nickel plating layer is in a vacuum aluminum plating mode, and the thickness range is 0.4-5 μm.
The manufacturing method of the electromagnetic shielding cloth comprises the following steps:
step A: preparing a base cloth layer;
and B, step: vacuum plating nickel layer on the base cloth layer to form a first nickel plating layer and a second nickel plating layer,
vacuum plating is a physical deposition phenomenon. Namely, argon is injected in a vacuum state, the argon impacts a target material, and the target material is separated into molecules which are adsorbed by a conductive goods to form a uniform and smooth surface layer. In order to meet the requirements of being safer, more energy-saving, noise-reducing and pollutant-discharging-reducing, vacuum plating has become a new environmental-friendly trend in surface treatment technology. Different from general electroplating, vacuum electroplating is more environment-friendly, and mainly comprises vacuum evaporation, sputtering and ion plating.
Depositing copper layers on the nickel layers on the surfaces of the first nickel plating layer and the second nickel plating layer by using a magnetron sputtering method to form a first conductive copper cloth layer and a second conductive copper cloth layer;
d, stirring and grinding 70-80% of PU polyurethane resin, 15-28% of aluminum silver powder, 1-3% of black toner and 0.5-2.5% of yellow toner to prepare aluminum silver paste;
e, uniformly coating aluminum paste on the first conductive copper cloth layer by using a scraper, heating at 120 ℃ for 120 seconds, and curing to form a stable silver conductive film with silver luster, wherein the first conductive copper cloth layer is protected for use;
step F, stirring 90-95% of acrylic pressure-sensitive adhesive, 3-8% of nickel powder, 0.8-2% of black toner and 0.7-1.8% of yellow toner to prepare acrylic pressure-sensitive adhesive glue;
and G, selecting release paper, coating acrylic acid pressure-sensitive adhesive glue with the thickness of 0.5-100 micrometers on the release paper, then adhering the release paper with the acrylic acid pressure-sensitive adhesive glue on the surface of the second conductive copper cloth, baking for 2 minutes by using an oven at 110 ℃, forming a self-adhesive conductive adhesive film on the surface of the second conductive copper cloth to enable the electromagnetic shielding cloth to be self-adhesive, tearing the release paper, adhering the electromagnetic cloth inside an electronic product to conduct electricity, having a good electromagnetic shielding function, and being used for electronic products, military products and the like.
(III) advantageous effects
The invention provides an electromagnetic shielding cloth. The method has the following beneficial effects:
this electromagnetic shielding cloth, through the electroplated nickel layer that sets up, the porosity is high, mainly be used as the decorative cladding material of protection, the range of application is wide, prevent corroding, increase wearability, gloss and aesthetic property, through the electroplated copper layer that sets up, be used for improving cladding material cohesion, and is sturdy and durable, long service life, through the silver-aluminum thick liquid coating that sets up at the electroplated copper layer outside end, excellent light reflectance ability and metallic luster have, do not dissolve in water based paint, through the silvery rubber coating that sets up, it is fixed to be convenient for direct bonding, the surface nickel layer is difficult for being oxidized, and is durable.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
in the figure, 1, a base material cloth layer; 2. a first electromagnetic shield layer; 3. a second electromagnetic shield layer; 4. a first conductive copper layer; 5. a first conductive copper layer; 6. and a conductive film.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a technical solution: the utility model provides an electromagnetic shielding cloth, includes the base cloth layer, the upper and lower surface coating on base cloth layer has first electromagnetic shield layer and second electromagnetic shield layer, and the surface coating on first electromagnetic shield layer has first electrically conductive copper cloth layer, and the surface coating on second electromagnetic shield layer has the electrically conductive copper cloth layer of second, and the surface on first electrically conductive copper cloth layer is equipped with the silver-colored conducting film, and the surface on the electrically conductive copper cloth layer of second is equipped with acrylic acid pressure sensitive adhesive glue layer.
Preferably, the base cloth layer is a blended cloth of aramid fibers and polyamide fibers, the blended cloth is formed by crosswise weaving warps and wefts, and a plain weave structure or a twill weave structure is arranged between the warps and the wefts.
Preferably, the first electromagnetic shielding layer and the second electromagnetic shielding layer are nickel plating layers or aluminum plating layers.
Preferably, the silver conductive film is an aluminum paste coating. In order to ensure the electromagnetic shielding effect and control the cost, the nickel plating layer is formed by one-time plating in a vacuum aluminum plating mode, the thickness range of the nickel plating layer is 2-5 mu m, and the meshes of the base cloth layer are required to be ensured not to be blocked so as to ensure good air permeability; the first conductive copper cloth layer and the second conductive copper cloth layer are thinner than the first electromagnetic shielding layer and the second electromagnetic shielding layer respectively, and only one layer is plated, and the thickness range is 0.4-0.6 mu m.
Preferably, the nickel plating layer is in a vacuum aluminum plating mode, and the thickness range is 0.4-5 μm.
The manufacturing method of the electromagnetic shielding cloth comprises the following steps:
step A: preparing a base cloth layer;
and B, step: vacuum plating nickel layer on the base cloth layer to form a first nickel plating layer and a second nickel plating layer,
vacuum plating is a physical deposition phenomenon. Namely, argon is injected in a vacuum state, the argon impacts a target material, and the target material is separated into molecules which are adsorbed by a conductive goods to form a uniform and smooth surface layer. In order to meet the requirements of being safer, more energy-saving, noise-reducing and pollutant-discharging-reducing, vacuum plating has become a new environmental-friendly trend in surface treatment technology. Different from general electroplating, vacuum electroplating is more environment-friendly, and mainly comprises vacuum evaporation, sputtering and ion plating.
Depositing copper layers on the nickel layers on the surfaces of the first nickel plating layer and the second nickel plating layer by using a magnetron sputtering method to form a first conductive copper cloth layer and a second conductive copper cloth layer;
d, mixing 70-80% of PU polyurethane resin, 1-3% of black toner and 0.5-2.5% of yellow toner, adding 15-28% of aluminum powder under the stirring of 5000-7000 rpm, stirring for 10-20 minutes until the aluminum powder is uniformly dispersed visually, mixing and dispersing in a ball mill for 30-40 minutes, and then ultrasonically dispersing for 6-8 minutes to obtain uniform slurry; vacuum defoaming the slurry under the vacuum degree of 0.06-0.09MPa for 6-9 min, and grinding and rolling in a three-roll mill until the viscosity of the silver paste is 10000-20000 centipoises to obtain the aluminum silver paste;
the compatibility of the PU polyurethane resin and the aluminum silver powder and the dispersibility of the aluminum silver powder in the liquid PU polyurethane resin are higher. The aluminum paste prepared by the method has small granularity, high glossiness, strong corrosion resistance and good wettability, and lays a foundation for improving the scraping adaptability of the aluminum paste. The formed aluminum silver paste layer has good elasticity at normal temperature, and the elongation rate of the aluminum silver paste layer reaches over 100 percent even at the low temperature of minus 10 ℃, so the aluminum silver paste layer has good elasticity at normal temperature and low temperature.
E, uniformly coating aluminum paste on the first conductive copper cloth layer by using a scraper, heating at 120 ℃ for 120 seconds, and curing to form a stable silver conductive film with silver luster, wherein the first conductive copper cloth layer is protected for use;
step F, stirring 90-95% of acrylic pressure-sensitive adhesive, 3-8% of nickel powder, 0.8-2% of black toner and 0.7-1.8% of yellow toner to prepare acrylic pressure-sensitive adhesive glue;
g, selecting release paper, coating acrylic acid pressure-sensitive adhesive glue with the thickness of 0.5-100 microns on the release paper, then adhering the release paper with the acrylic acid pressure-sensitive adhesive glue on the surface of the second conductive copper cloth, baking for 2 minutes in an oven at 110 ℃, forming a self-adhesive conductive adhesive film on the surface of the second conductive copper cloth to enable the electromagnetic shielding cloth to be self-adhesive, tearing the release paper, and adhering the electromagnetic cloth to the electronic product
The invention adopts the vacuum electroplating process, effectively reduces the generation of sewage, reduces the environmental pollution, reduces the cost, improves the efficiency, avoids the glue leakage to the surface in the use process, prevents the first electromagnetic shielding layer and the second electromagnetic shielding layer from being oxidized, and keeps superior performance.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides an electromagnetic shielding cloth, includes the base cloth layer, the upper and lower surface coating on base cloth layer has first electromagnetic shielding layer and second electromagnetic shielding layer, its characterized in that: the surface coating of first electromagnetic shield layer has first electrically conductive copper cloth layer, the surface coating of second electromagnetic shield layer has the electrically conductive copper cloth layer of second, and the surface of first electrically conductive copper cloth layer is equipped with the conducting film, the surface of the electrically conductive copper cloth layer of second is equipped with self-adhesion conducting resin membrane.
2. An electromagnetic shielding cloth according to claim 1, characterized in that: the base cloth layer is made of aramid fiber and polyamide fiber blended cloth, the blended cloth is formed by crosswise weaving warps and wefts, and a plain weave structure or a twill weave structure is arranged between the warps and the wefts.
3. An electromagnetic shielding cloth according to claim 1, characterized in that: the first electromagnetic shielding layer and the second electromagnetic shielding layer are nickel plating layers or aluminum plating layers.
4. An electromagnetic shielding cloth according to claim 3, characterized in that: the nickel plating layer or the aluminum plating layer is in a vacuum nickel plating or vacuum aluminum plating mode, and the thickness range is 0.4-5 mu m.
5. An electromagnetic shielding cloth according to claim 1, characterized in that: the conductive film is an aluminum paste coating.
6. An electromagnetic shielding cloth according to claim 1, characterized in that: the self-adhesive conductive adhesive film is an acrylic pressure-sensitive adhesive glue layer.
7. A method for manufacturing an electromagnetic shielding cloth according to claim 1, wherein: the method comprises the following steps:
step A: preparing a base cloth layer;
and B, step: vacuum plating nickel layers on the upper surface and the lower surface of the base cloth layer to form a first nickel plating layer and a second nickel plating layer;
depositing copper layers on the nickel layers on the surfaces of the first nickel plating layer and the second nickel plating layer by using a magnetron sputtering method to form a first conductive copper cloth layer and a second conductive copper cloth layer;
d, stirring and grinding 70-80% of PU polyurethane resin, 15-28% of aluminum silver powder, 1-3% of black toner and 0.5-2.5% of yellow toner to prepare aluminum silver paste;
e, uniformly coating aluminum paste on the first conductive copper cloth layer by using a scraper, heating at 120 ℃ for 120 seconds, and curing to form a stable silver conductive film with silver luster, wherein the first conductive copper cloth layer is protected for use;
step F, stirring 90-95% of acrylic pressure-sensitive adhesive, 3-8% of nickel powder, 0.8-2% of black toner and 0.7-1.8% of yellow toner to prepare acrylic pressure-sensitive adhesive glue;
and G, selecting release paper, coating acrylic acid pressure-sensitive adhesive glue with the thickness of 0.5-100 microns on the release paper, adhering the release paper with the acrylic acid pressure-sensitive adhesive glue to the surface of the second conductive copper cloth, baking for 2 minutes in an oven at the temperature of 110 ℃, and forming a self-adhesive conductive adhesive film on the surface of the second conductive copper cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010720894.7A CN113969120A (en) | 2020-07-24 | 2020-07-24 | Electromagnetic shielding cloth and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010720894.7A CN113969120A (en) | 2020-07-24 | 2020-07-24 | Electromagnetic shielding cloth and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN113969120A true CN113969120A (en) | 2022-01-25 |
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| CN202010720894.7A Pending CN113969120A (en) | 2020-07-24 | 2020-07-24 | Electromagnetic shielding cloth and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114921963A (en) * | 2022-04-29 | 2022-08-19 | 安安(中国)有限公司 | Production process of synthetic leather and metal hollowed-out synthetic leather |
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2020
- 2020-07-24 CN CN202010720894.7A patent/CN113969120A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114921963A (en) * | 2022-04-29 | 2022-08-19 | 安安(中国)有限公司 | Production process of synthetic leather and metal hollowed-out synthetic leather |
| CN114921963B (en) * | 2022-04-29 | 2023-08-25 | 安安(中国)有限公司 | Production process of synthetic leather and metal hollowed-out synthetic leather |
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