CN109996431B - High-performance shielding glass and preparation method thereof - Google Patents
High-performance shielding glass and preparation method thereof Download PDFInfo
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- CN109996431B CN109996431B CN201910368836.XA CN201910368836A CN109996431B CN 109996431 B CN109996431 B CN 109996431B CN 201910368836 A CN201910368836 A CN 201910368836A CN 109996431 B CN109996431 B CN 109996431B
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- 239000011521 glass Substances 0.000 title claims abstract description 113
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 239000002131 composite material Substances 0.000 claims abstract description 74
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052709 silver Inorganic materials 0.000 claims abstract description 12
- 239000004332 silver Substances 0.000 claims abstract description 12
- 230000001788 irregular Effects 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 323
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 38
- 229920000642 polymer Polymers 0.000 claims description 21
- 239000012044 organic layer Substances 0.000 claims description 20
- 229920002635 polyurethane Polymers 0.000 claims description 20
- 239000004814 polyurethane Substances 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 16
- 238000000576 coating method Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 12
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 10
- 238000002834 transmittance Methods 0.000 claims description 10
- 239000005354 aluminosilicate glass Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000010146 3D printing Methods 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims 1
- 230000005672 electromagnetic field Effects 0.000 abstract description 5
- 239000011229 interlayer Substances 0.000 description 5
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 4
- GOECOOJIPSGIIV-UHFFFAOYSA-N copper iron nickel Chemical compound [Fe].[Ni].[Cu] GOECOOJIPSGIIV-UHFFFAOYSA-N 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 208000002173 dizziness Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 206010047513 Vision blurred Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000016776 visual perception Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/103—Metal fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/212—Electromagnetic interference shielding
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention relates to a high-performance shielding glass and a preparation method thereof, wherein the high-performance shielding glass comprises the following components: the glass body is of a multi-layer composite structure; a magnetically conductive layer disposed within the glass body and disposed on one or more of the layers of the multi-layer composite structure; the nanoscale electromagnetic shielding layer is arranged in the glass body and is positioned on one or more layers of the multilayer composite structure, and the nanoscale electromagnetic shielding layer is a nanoscale disordered irregular silver grid; the conductive layer is arranged in the glass body and is positioned on one or more layers of the multilayer composite structure; and one end of the flexible metal net is connected with the magnetic conduction layer, the nanoscale electromagnetic shielding layer and the conducting layer, and the other end of the flexible metal net is used for being connected with the outside of the glass body. The high-performance shielding glass has strong shielding and protecting capability on electromagnetic fields and wide shielding frequency range; meanwhile, the nanoscale electromagnetic shielding layer also adopts a disordered irregular grid pattern, and no moire is generated under strong light.
Description
Technical Field
The invention relates to shielding glass, in particular to high-performance shielding glass and a preparation method thereof.
Background
Electromagnetic waves are the main way of electromagnetic energy propagation, and when the high-frequency circuit works, electromagnetic waves are radiated outwards, so that interference is generated to other adjacent devices. On the other hand, various electromagnetic waves in the space are also induced into the circuit, and cause interference to the circuit. Electromagnetic shielding is a method for limiting electromagnetic waves to a certain area by a metal shielding body, and has wide application requirements in the fields of electronics, communication and the like.
The manufacture of the high-strength electromagnetic shielding glass is generally designed according to the shielding effectiveness of the electromagnetic wave frequency band required, but the electromagnetic shielding glass in the prior art has stronger shielding effectiveness, the frequency band is 0.3-18GHz, and the shielding effectiveness is more than or equal to 40dB.
In carrying out the invention, the inventors have found that the prior art has at least the following problems:
1. the electromagnetic shielding glass in the prior art has insufficient protective effect on the frequency bands of 0.01-300MHz and 18-40 GHz;
2. the electromagnetic shielding glass in the prior art is usually made by etching micro-nano grids, the line width is 0.5-15 mu m, the line width range is larger, the grids are regular patterns, mole patterns are easy to generate under strong light, visual feeling of an observer is influenced, and serious negative feelings such as dizziness, visual blurring and the like are generated for the observer;
3. meanwhile, the base material of the micro-nano grid is a flexible material, and the flexible material is exposed for use, so that the environment resistance is poor, and the visual deformation after bending is serious;
4. in addition, the electromagnetic shielding glass in the prior art is generally formed by taking a layer of electromagnetic shielding layer as electromagnetic protection, and the electromagnetic shielding layer is single in metal material and poor in magnetic field protection performance.
Disclosure of Invention
In order to solve the technical problems in the prior art, the embodiment of the invention provides high-performance shielding glass and a preparation method thereof. The specific technical scheme is as follows:
in a first aspect, a high performance shielding glass is provided, wherein the high performance shielding glass comprises:
the glass body is of a multi-layer composite structure;
a magnetically conductive layer disposed within the glass body and disposed on one or more of the layers of the multi-layer composite structure;
the nanoscale electromagnetic shielding layer is arranged in the glass body and is positioned on one or more layers of the multilayer composite structure, and the nanoscale electromagnetic shielding layer is a nanoscale disordered irregular silver grid;
the conductive layer is arranged in the glass body and is positioned on one or more layers of the multilayer composite structure; and
one end of the flexible metal net is connected with the magnetic conduction layer, the nanoscale electromagnetic shielding layer and the conducting layer, and the other end of the flexible metal net is used for being connected with the outside of the glass body.
The electromagnetic shielding device comprises a glass body, a magnetic conduction layer, a nanoscale electromagnetic shielding layer, a conducting layer, a shielding body, a protective layer and a protective layer, wherein the magnetic conduction layer, the nanoscale electromagnetic shielding layer and the conducting layer are arranged on different layer structures in the multilayer composite structure, and the shielding body is used for electromagnetic shielding of the glass body.
In a first possible implementation manner of the first aspect, the multi-layer composite structure further includes: the inner layer glass is arranged on the inner side of the multilayer composite structure, and the magnetic conduction layer is arranged on the outer surface of the inner layer glass; the middle organic layer is arranged on the inner layer glass, and the nanoscale electromagnetic shielding layer is arranged in the middle of the middle organic layer; and the outer layer glass is arranged on the middle organic layer, and the conductive layer is arranged on the inner surface of the outer layer glass.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the inner layer glass is aluminosilicate glass; the middle organic layer is a plurality of transparent polyurethane polymer layers or a plurality of polyvinyl alcohol polymer layers, the plurality of transparent polyurethane polymer layers or the plurality of polyvinyl alcohol polymer layers are laminated, and the nanoscale electromagnetic shielding layer is arranged between the plurality of transparent polyurethane polymer layers or the plurality of polyvinyl alcohol polymer layers; the outer layer glass is aluminosilicate glass.
With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the number of the transparent polyurethane polymer layers or the polyvinyl alcohol polymer layers is two, and the nanoscale electromagnetic shielding layer is disposed between the two transparent polyurethane polymer layers or the polyvinyl alcohol polymer layers.
In a fourth possible implementation manner of the first aspect, the magnetically permeable layer is a magnetic composite film layer composed of a plurality of transparent magnetically permeable materials, and a surface resistance of the magnetic composite film layer is less than 20 Ω/sq.
In a fifth possible implementation manner of the first aspect, the surface resistance of the nanoscale electromagnetic shielding layer is less than 0.8 Ω/sq, the silver grid has a thickness of 1-5 μm and a line width of 300-500nm.
In a sixth possible implementation manner of the first aspect, the conductive layer is a low-resistivity indium tin oxide (Indium Tin Oxides, ITO) film layer, and a surface resistance of the low-resistivity indium tin oxide (Indium Tin Oxides, ITO) film layer is less than 3 Ω/sq.
In a seventh possible implementation manner of the first aspect, the light transmittance of the glass body is greater than 92%, and the light transmittance of the shielding body is greater than 80%.
In a second aspect, a method for preparing high-performance shielding glass is provided, wherein the method for preparing high-performance shielding glass comprises the following steps:
providing a glass body which is of a multi-layer composite structure;
coating a multilayer transparent magnetic conductive material on the surface of one or more layers of the multilayer composite structure by a magnetron sputtering coating indium tin oxide (Indium Tin Oxides, ITO) and metallic nickel method to form a magnetic conductive layer;
printing a nano-scale disordered irregular silver grid on the surface of one or more layers of the multilayer composite structure by a 3D printing (3 DP) technology to form a nano-scale electromagnetic shielding layer;
coating an indium tin oxide (Indium Tin Oxides, ITO) film layer on the surface of one or more layers of the multilayer composite structure by a magnetron sputtering coating indium tin oxide (Indium Tin Oxides, ITO) method to form a conductive layer; and
one end of the flexible metal net is connected with the magnetic conduction layer, the nanoscale electromagnetic shielding layer and the conducting layer, and the other end of the flexible metal net is connected with the outside of the glass body;
wherein, the magnetic conduction layer, the nanoscale electromagnetic shielding layer and the conducting layer are formed on different layer structures in the multilayer composite structure to form a shielding body.
In a first possible implementation manner of the second aspect, the magnetically permeable layer is formed on an outer surface of an innermost layer structure in the multi-layer composite structure; the nanoscale electromagnetic shielding layer is formed on the surface of the intermediate layer structure in the multilayer composite structure; and the conductive layer is formed on the inner surface of the outermost layer structure in the multilayer composite structure.
Compared with the prior art, the invention has the advantages that:
1. the conductive layer in the high-performance shielding glass is a low-resistivity indium tin oxide (Indium Tin Oxides, ITO) film layer, and has strong high-frequency electromagnetic wave protection capability; the nanoscale electromagnetic shielding layer is an ultralow-resistivity reticular silver film layer, and has strong medium-low frequency electromagnetic wave protection capability; the magnetic conductive layer is a magnetic composite film layer, has strong low-frequency protection capability, and the magnetic conductive layer, the nanoscale electromagnetic shielding layer and the conducting layer are positioned on different layer structures in the multilayer composite structure to form a shielding body, so that the electromagnetic field shielding and protecting capability is strong, and the shielding frequency range is wide.
2. The outer layer glass and the inner layer glass in the multilayer composite structure adopt aluminosilicate glass, so that the environment resistance is good; the conducting layer, the magnetic conducting layer and the nanoscale electromagnetic shielding layer are subjected to interlayer compounding by using the organic interlayer, so that the risk of bare use is avoided.
3. The light transmittance of the glass body is more than 92%, the light transmittance of the shielding body is more than 80%, and the light transmittance of the high-performance shielding glass formed by compounding is more than 75%, so that the high-performance shielding glass has good optical performance.
4. The nanoscale electromagnetic shielding layer adopts a disordered irregular grid pattern, and does not generate mole lines under strong light.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a high performance shielding glass according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart of steps of a method for producing a high-performance shielding glass according to a second embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
In an embodiment of the present invention, please refer to fig. 1, which illustrates a schematic structure of a high performance shielding glass 1 according to an embodiment of the present invention. The high-performance shielding glass 1 comprises a glass body 2, a magnetic conduction layer 3, a nanoscale electromagnetic shielding layer 4, a conductive layer 5 and a flexible metal net 6, wherein:
the glass body 2 is a multi-layer composite structure 24, the multi-layer composite structure 24 is mainly used for providing rigid support for the magnetic conduction layer 3, the nano electromagnetic shielding layer 4 and the conductive layer 5, and the magnetic conduction layer 3, the nano electromagnetic shielding layer 4 and the conductive layer 5 are positioned on different layer structures, so that the magnetic conduction layer 3, the nano electromagnetic shielding layer 4 and the conductive layer 5 form a shielding body 7, and the shielding protection capability and the shielding frequency range of the glass body 2 to electromagnetic fields are improved.
In a preferred embodiment, please refer to fig. 1 again, the multilayer composite structure 24 includes an inner layer glass 21, an intermediate organic layer 22 and an outer layer glass 23, the inner layer glass 21 is disposed on the inner side of the multilayer composite structure 24, the intermediate organic layer 22 is disposed on the inner layer glass 21, the outer layer glass 23 is disposed on the intermediate organic layer 22, the inner layer glass 21, the intermediate organic layer 22 and the outer layer glass 23 form a three-layer composite structure, and the intermediate organic layer 22 is used for interlayer-compositing the magnetic conductive layer 3, the nano-electromagnetic shielding layer 4 and the conductive layer 5 to make the magnetic conductive layer 3, the nano-electromagnetic shielding layer 4 and the conductive layer 5 be composited on different layer structures of the three-layer composite structure without exposing any risk, however, the structure of the multilayer composite structure 24 is not limited thereto, and those skilled in the art can select other suitable multilayer composite structure 24 according to the teachings of the present embodiment.
In another preferred embodiment, the aluminosilicate glass has better chemical stability, electrical insulation, mechanical strength and lower thermal expansion coefficient, so that the aluminosilicate glass is used for both the inner glass 21 and the outer glass 23, and has better environmental resistance, but not limited thereto. The intermediate organic layer 22 is a plurality of transparent polyurethane polymer layers 221 or a plurality of polyvinyl alcohol polymer layers, and the plurality of transparent polyurethane polymer layers 221 or the plurality of polyvinyl alcohol polymer layers are laminated, but not limited thereto.
In another preferred embodiment, referring to fig. 1 again, the number of the transparent polyurethane polymer layers 221 is two, so that the interlayer of the nano electromagnetic shielding layer 4 is compounded between the two transparent polyurethane polymer layers 221, but not limited thereto, and a person skilled in the art may select other suitable numbers of the transparent polyurethane polymer layers 221 according to practical situations, for example, four layers may be used, and the interlayer of the magnetically conductive layer 3, the nano electromagnetic shielding layer 4 and the conductive layer 5 is compounded between the four transparent polyurethane polymer layers 221.
The magnetic conductive layer 3 is disposed in the glass body 2 and is located on one or more layers of the multi-layer composite structure 24, and when the number of the magnetic conductive layers 3 is one, the magnetic conductive layers 3 are disposed on one of the multi-layer composite structure 24; when the number of the magnetic conductive layers 3 is multiple, the multiple magnetic conductive layers 3 are correspondingly disposed on one of the multiple layers 24. Referring to fig. 1 again, the number of the magnetic conductive layers 3 disclosed in the present embodiment is one, but the magnetic conductive layers 3 are not limited to the outer surface of the inner glass 21, and one skilled in the art may choose to set them at other suitable positions according to the teachings of the present embodiment, for example, may also set the magnetic conductive layers on the inner surface of the outer glass 23.
In a preferred embodiment, the magnetically conductive layer 3 is a magnetic composite film layer composed of a plurality of layers of transparent magnetically conductive materials, the surface resistance of the magnetic composite film layer is smaller than 20 Ω/sq, the magnetic composite film layer protects electromagnetic waves in a low frequency band (10K-30 MHz), the shielding effectiveness is larger than 50dB, and the protection capability is strong.
The nanoscale electromagnetic shielding layer 4 is arranged in the glass body 2 and is positioned on one or more layers of the multilayer composite structure 24, and when the number of the nanoscale electromagnetic shielding layers 4 is one layer, the nanoscale electromagnetic shielding layer 4 is arranged on one layer of the multilayer composite structure 24; when the number of the nano-scale electromagnetic shielding layers 4 is plural, the plural nano-scale electromagnetic shielding layers 4 are correspondingly disposed on the plural layers of the plural composite structures 24. Referring to fig. 1 again, the number of the nanoscale electromagnetic shielding layers 4 disclosed in the present embodiment is one, and the nanoscale electromagnetic shielding layers 4 are disposed in the middle of the middle organic layer 22, but not limited thereto, and one skilled in the art can choose to dispose them at other suitable positions according to the teachings of the present embodiment.
The nanoscale electromagnetic shielding layer 4 is a nanoscale disordered irregular silver grid, and does not generate mole lines under strong light, so that the visual perception of an observer is not affected, and serious negative experiences such as dizziness, blurred vision and the like are not generated for the observer.
In a preferred embodiment, the surface resistance of the nanoscale electromagnetic shielding layer 4 is smaller than 0.8 ohm/sq, the thickness of the silver grid is 1-5 mu m, the line width is 300-500nm, the shielding effect of the nanoscale electromagnetic shielding layer is larger than 50dB, and the shielding capability is strong.
The conductive layers 5 are disposed in the glass body 2 and located on one or more of the multi-layer composite structures 24, and when the number of the conductive layers 5 is one, the conductive layers 5 are disposed on one of the multi-layer composite structures 24; when the number of the conductive layers 5 is multiple, the multiple conductive layers 5 are correspondingly disposed on one of the multiple composite structures 24. Referring to fig. 1 again, the number of the conductive layers 5 disclosed in the present embodiment is one, but the conductive layers 5 are not limited to the inner surface of the outer layer glass 23, and those skilled in the art can select to set the conductive layers at other suitable positions according to the teachings of the present embodiment, for example, can also set the conductive layers on the outer surface of the inner layer glass 21.
In a preferred embodiment, the conductive layer 5 is a low-resistivity indium tin oxide (Indium Tin Oxides, ITO) film, the surface resistance of the low-resistivity indium tin oxide (Indium Tin Oxides, ITO) film is less than 3 Ω/sq, and the low-resistivity indium tin oxide (Indium Tin Oxides, ITO) film has shielding effect of greater than 40dB and strong shielding capability for electromagnetic waves in the high frequency range (1-40 GHz).
The magnetic conduction layer 3, the nanoscale electromagnetic shielding layer 4 and the conducting layer 5 are positioned on different layer structures in the multilayer composite structure 24 to form the shielding body 7, and the conducting layer 5 has strong protection capability on high-frequency electromagnetic waves, the nanoscale electromagnetic shielding layer 4 has strong protection capability on medium-low-frequency electromagnetic waves, the magnetic conduction layer 3 has strong protection capability on low-frequency electromagnetic waves, and the formed shielding body 7 has wide shielding frequency range and strong shielding protection capability on electromagnetic fields, so that the glass body 2 can be subjected to better electromagnetic shielding, and the high-efficiency electromagnetic shielding performance can be considered in a complex electromagnetic environment.
One end of the flexible metal net 6 is connected with the magnetic conductive layer 3, the nanoscale electromagnetic shielding layer 4 and the conductive layer 5, and the other end of the flexible metal net 6 is used for being connected with the outside of the glass body 2. Referring to fig. 1 again, the other end of the flexible metal mesh 6 disclosed in the present embodiment is connected to ground, so as to realize the electrical connection of the magnetically conductive layer 3, the nanoscale electromagnetic shielding layer 4 and the conductive layer 5 to ground, but not limited thereto.
The flexible metal mesh 6 is mainly used for electrically connecting and grounding the magnetically conductive layer 3, the nanoscale electromagnetic shielding layer 4 and the conductive layer 5, and in this embodiment, the material of the flexible metal mesh 6 may be selected without special requirements, and may be a copper-nickel-iron alloy metal mesh according to the conventional selection of those skilled in the art.
In a preferred embodiment, the light transmittance of the glass body 2 is greater than 92% and the light transmittance of the shielding body 7 is greater than 80%, so that the light transmittance of the high-performance shielding glass 1 formed by compounding is greater than 75%, and the high-performance shielding glass has better optical performance, but not limited thereto.
In the second embodiment of the present invention, please refer to fig. 2, which is a schematic flow chart illustrating steps of a method 8 for preparing a high performance shielding glass 1 according to the second embodiment of the present invention. The method 8 for producing the high-performance shielding glass 1 includes the following steps 801 to 805.
In step 801, a glass body 2 is provided. A glass body 2 is provided which is a multi-layer composite structure 24.
In a preferred embodiment, the multi-layer composite structure 24 further includes an inner layer glass 21, an intermediate organic layer 22 and an outer layer glass 23, wherein the inner layer glass 21 is disposed on the inner side of the multi-layer composite structure 24, the intermediate organic layer 22 is disposed on the inner layer glass 21, the outer layer glass 23 is disposed on the intermediate organic layer 22, and the inner layer glass 21, the intermediate organic layer 22 and the outer layer glass 23 form a three-layer composite structure, however, the structure of the multi-layer composite structure 24 is not limited thereto, and those skilled in the art can select other suitable multi-layer composite structures 24 according to the teachings of the present embodiment.
In another preferred embodiment, the inner glass 21 and the outer glass 23 are made of aluminosilicate glass, which has better environmental resistance, but not limited thereto. The intermediate organic layer 22 is a plurality of transparent polyurethane polymer layers 221, and the plurality of transparent polyurethane polymer layers 221 are laminated, but not limited thereto.
In another preferred embodiment, the number of the transparent polyurethane polymer layers 221 is two, but not limited thereto.
At step 802, the magnetically permeable layer 3 is formed. The magnetically conductive layer 3 is formed by coating a layer of transparent magnetically conductive material on the surface of one or more layers of the multilayer composite structure 24 by magnetron sputtering coating indium tin oxide (Indium Tin Oxides, ITO) and metallic nickel.
In a preferred embodiment, the magnetically permeable layer 3 is formed on the outer surface of the innermost layer of the multi-layer composite structure 24, but is not limited thereto.
In another preferred embodiment, the magnetically permeable layer 3 is formed by coating a plurality of layers of transparent magnetically permeable material on the outer surface of the inner glass 21 by magnetron sputtering coating indium tin oxide (Indium Tin Oxides, ITO) and metallic nickel, but not limited thereto.
The magnetron sputtering method for coating indium tin oxide (Indium Tin Oxides, ITO) and metallic nickel is a conventional method known to those skilled in the art, and therefore will not be described herein.
In step 803, the nanoscale electromagnetic shielding layer 4 is formed. The nanoscale electromagnetic shielding layer 4 is formed by printing a nanoscale disordered irregular silver grid on the surface of one or more layers of the multilayer composite structure 24 through a 3D printing (3 DP) technology.
In a preferred embodiment, the nanoscale electromagnetic shielding layer 4 is formed on the surface of the interlayer structure in the multilayer composite structure 24, but is not limited thereto.
In another preferred embodiment, when the intermediate layer structure is a two-layer transparent polyurethane polymer layer 221, a nano-scale disordered irregular silver grid is printed between the two-layer transparent polyurethane polymer layer 221 by a 3D printing (3 DP) technology to form a nano-scale electromagnetic shielding layer 4, but not limited thereto.
As for the 3D printing (3 DP) technique, conventional techniques are well known to those skilled in the art, and thus are not described herein.
In step 804, the conductive layer 5 is formed. The conductive layer 5 is formed by coating one or more of the surfaces of the multilayer composite structure 24 with indium tin oxide (Indium Tin Oxides, ITO) film by magnetron sputtering.
In a preferred embodiment, the conductive layer 5 is formed on the inner surface of the outermost layer of the multi-layer composite structure 24, but not limited thereto.
In another preferred embodiment, the conductive layer 5 is formed by coating an indium tin oxide (Indium Tin Oxides, ITO) film layer on the inner surface of the outer glass 23 by a magnetron sputtering method, but not limited thereto.
As for the magnetron sputtering method for coating indium tin oxide (Indium Tin Oxides, ITO), conventional techniques are well known to those skilled in the art, and thus will not be described herein.
In step 805, a flexible metal mesh 6 is provided. One end of the flexible metal net 6 is connected with the magnetic conduction layer 3, the nanoscale electromagnetic shielding layer 4 and the conducting layer 5, and the other end of the flexible metal net 6 is connected with the outside of the glass body 2.
In a preferred embodiment, the flexible metal mesh 6 is a copper-nickel-iron alloy metal mesh, one end of the copper-nickel-iron alloy metal mesh is connected to the magnetic conductive layer 3, the nanoscale electromagnetic shielding layer 4 and the conductive layer 5, and the other end of the copper-nickel-iron alloy metal mesh is connected to ground, so that the electrical connection between the magnetic conductive layer 3, the nanoscale electromagnetic shielding layer 4 and the conductive layer 5 is grounded, but the invention is not limited thereto.
The magnetic conductive layer 3, the nanoscale electromagnetic shielding layer 4 and the conducting layer 5 in the steps are located on different layer structures in the multilayer composite structure 24 to form the shielding body 7, and the conducting layer 5 has strong protection capability on high-frequency electromagnetic waves, the nanoscale electromagnetic shielding layer 4 has strong protection capability on medium-low-frequency electromagnetic waves, the magnetic conductive layer 3 has strong protection capability on low-frequency waves, and the shielding body 7 formed by the steps has wide shielding frequency range and strong shielding protection capability on electromagnetic fields, so that the glass body 2 can be subjected to better electromagnetic shielding, and the high-efficiency electromagnetic shielding performance can be considered in a complex electromagnetic environment.
While the foregoing description illustrates and describes several preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (8)
1. A high performance shielding glass, the high performance shielding glass comprising:
the glass body is of a multi-layer composite structure;
a magnetically permeable layer disposed within the glass body and on one or more of the layers of the multi-layer composite structure;
the nanoscale electromagnetic shielding layer is arranged in the glass body and is positioned on one or more layers of the multilayer composite structure, and the nanoscale electromagnetic shielding layer is a nanoscale disordered irregular silver grid;
a conductive layer disposed within the glass body and on one or more of the plurality of layers of the composite structure;
one end of the flexible metal net is connected with the magnetic conduction layer, the nanoscale electromagnetic shielding layer and the conducting layer, and the other end of the flexible metal net is used for being connected with the ground to realize the electric connection and the grounding of the magnetic conduction layer, the nanoscale electromagnetic shielding layer and the conducting layer;
the magnetic conduction layer, the nanoscale electromagnetic shielding layer and the conducting layer are positioned on different layer structures in the multilayer composite structure to form a shielding body, and the shielding body is used for electromagnetic shielding of the glass body;
the multilayer composite structure further comprises:
the inner layer glass is arranged on the inner side of the multilayer composite structure, and the magnetic conduction layer is arranged on the outer surface of the inner layer glass;
the middle organic layer is arranged on the inner layer glass, and the nanoscale electromagnetic shielding layer is arranged in the middle of the middle organic layer;
and the outer layer glass is arranged on the middle organic layer, and the conducting layer is arranged on the inner surface of the outer layer glass.
2. The high performance shielding glass of claim 1, wherein,
the inner layer glass is aluminosilicate glass;
the middle organic layer is a plurality of transparent polyurethane polymer layers or a plurality of polyvinyl alcohol polymer layers, the transparent polyurethane polymer layers or the polyvinyl alcohol polymer layers are laminated, and the nanoscale electromagnetic shielding layer is arranged between the transparent polyurethane polymer layers or the polyvinyl alcohol polymer layers; and
the outer layer glass is aluminosilicate glass.
3. The high-performance shielding glass according to claim 2, wherein the number of the transparent polyurethane polymer layers or the polyvinyl alcohol polymer layers is two, and the nanoscale electromagnetic shielding layer is arranged between the polyvinyl alcohol polymer layers or the ester polymer layers.
4. The high performance shielding glass of claim 1, wherein the magnetically permeable layer is a magnetic composite film layer comprised of a plurality of layers of transparent magnetically permeable material, the magnetic composite film layer having a surface resistance of less than 20 Ω/sq.
5. The high performance shielding glass of claim 1, wherein the nanoscale electromagnetic shielding layer has a surface resistance of less than 0.8 Ω/sq, the silver grid having a thickness of 1-5 μm and a line width of 300-500nm.
6. The high performance shielding glass of claim 1, wherein the conductive layer is a low resistivity indium tin oxide (Indium Tin Oxides, ITO) film having a surface resistance of less than 3 Ω/sq.
7. The high performance shielding glass of claim 1, wherein the glass body has a light transmittance of greater than 92% and the shield has a light transmittance of greater than 80%.
8. The preparation method of the high-performance shielding glass is characterized by comprising the following steps of:
providing a glass body which is of a multi-layer composite structure;
coating a multilayer transparent magnetic conductive material on the surface of one or more layers of the multilayer composite structure by a magnetron sputtering coating indium tin oxide (Indium Tin Oxides, ITO) and metallic nickel method to form a magnetic conductive layer;
printing a nano-scale disordered irregular silver grid on the surface of one or more layers of the multilayer composite structure by a 3D printing (3 DP) technology to form a nano-scale electromagnetic shielding layer;
coating an indium tin oxide (Indium Tin Oxides, ITO) film layer on the surface of one or more layers of the multilayer composite structure by a magnetron sputtering coating indium tin oxide (Indium Tin Oxides, ITO) method to form a conductive layer; and
one end of the flexible metal net is connected with the magnetic conduction layer, the nanoscale electromagnetic shielding layer and the conducting layer, and the other end of the flexible metal net is connected with the ground to realize the electric connection and the grounding of the magnetic conduction layer, the nanoscale electromagnetic shielding layer and the conducting layer;
wherein the magnetic conduction layer, the nanoscale electromagnetic shielding layer and the conducting layer are formed on different layer structures in the multilayer composite structure to form a shielding body;
the magnetic conductive layer is formed on the outer surface of the innermost layer structure in the multilayer composite structure;
the nanoscale electromagnetic shielding layer is formed on the surface of the intermediate layer structure in the multilayer composite structure; and
the conductive layer is formed on an inner surface of an outermost structure of the multi-layer composite structure.
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| CN112423574B (en) * | 2020-11-18 | 2023-03-10 | 中国科学院宁波材料技术与工程研究所 | Ultrathin flexible transparent electromagnetic shielding film and preparation method thereof |
| CN114559049A (en) * | 2022-03-29 | 2022-05-31 | 青岛理工大学 | Batch production method for manufacturing large-size electromagnetic shielding glass based on composite micro-nano additive |
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