CN211630732U - Composite wave-absorbing shielding material - Google Patents
Composite wave-absorbing shielding material Download PDFInfo
- Publication number
- CN211630732U CN211630732U CN201922466422.9U CN201922466422U CN211630732U CN 211630732 U CN211630732 U CN 211630732U CN 201922466422 U CN201922466422 U CN 201922466422U CN 211630732 U CN211630732 U CN 211630732U
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- layer
- wave
- absorbing
- shielding
- adhesive layer
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- 239000000463 material Substances 0.000 title claims abstract description 60
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 239000010410 layer Substances 0.000 claims abstract description 91
- 239000012790 adhesive layer Substances 0.000 claims abstract description 33
- 239000011358 absorbing material Substances 0.000 claims abstract description 30
- 239000000945 filler Substances 0.000 claims abstract description 11
- 229920000642 polymer Polymers 0.000 claims abstract description 10
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000011889 copper foil Substances 0.000 claims abstract description 4
- 239000011888 foil Substances 0.000 claims abstract description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 5
- 239000002390 adhesive tape Substances 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 11
- 239000000956 alloy Substances 0.000 abstract description 5
- 229910000599 Cr alloy Inorganic materials 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- XEVZIAVUCQDJFL-UHFFFAOYSA-N [Cr].[Fe].[Si] Chemical compound [Cr].[Fe].[Si] XEVZIAVUCQDJFL-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000788 chromium alloy Substances 0.000 abstract description 4
- 239000003822 epoxy resin Substances 0.000 abstract description 4
- 229920000647 polyepoxide Polymers 0.000 abstract description 4
- 229920002635 polyurethane Polymers 0.000 abstract description 4
- 239000004814 polyurethane Substances 0.000 abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 3
- -1 iron-silicon-aluminum Chemical compound 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 229920002379 silicone rubber Polymers 0.000 abstract description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract description 2
- 229920001568 phenolic resin Polymers 0.000 abstract description 2
- 239000005011 phenolic resin Substances 0.000 abstract description 2
- 229920006124 polyolefin elastomer Polymers 0.000 abstract description 2
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Images
Landscapes
- Laminated Bodies (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The embodiment of the utility model discloses a composite wave-absorbing shielding material, which is characterized by comprising a release layer, a shielding material layer and a wave-absorbing material layer; the release layer comprises a release film layer and a first adhesive layer; the shielding material layer comprises a high-frequency shielding layer and a low-frequency shielding layer, and the two layers are bonded through a second adhesive layer; the wave-absorbing material layer is a composite material layer consisting of one or two layers of wave-absorbing materials, each layer of the composite material layer consists of more than one wave-absorbing filler and a polymer base material, and when the number of layers is two, the two layers are bonded through a third adhesive layer. The high-frequency shielding layer is one of copper foil, aluminum foil or silver foil; the low-frequency shielding layer is made of an iron-nickel alloy material with a treated surface; the wave-absorbing filler is one or more of ferrite powder, carbonyl iron powder, flaky iron-silicon-aluminum alloy powder and flaky iron-silicon-chromium alloy powder; the polymer base material is one or a mixture of more of polyurethane, epoxy resin, phenolic resin, silicon rubber and polyolefin elastomer.
Description
Technical Field
The utility model belongs to the technical field of the combined material technique and specifically relates to a combined material with inhale ripples and shielding function is related to.
Background
The wave-absorbing material is a novel functional material, can gather and absorb electromagnetic wave energy with a specific frequency range, which is projected on the surface of the wave-absorbing material. The wave-absorbing material is prepared by filling an absorbent in the material, wherein the absorbent is usually metal or alloy powder, and the absorbent powder is fully dispersed in a base material by a processing technology of a high polymer base material to finally obtain the usable material.
The electromagnetic shielding material makes use of the reflection and guide effects of the shielding body on electromagnetic energy flow, so that the electromagnetic shielding material is closely related to the phenomena of electric charge, current and polarization induced on the surface of the shielding structure and inside the shielding body. The shielding is classified into electric field shielding (electrostatic shielding and alternating electric field shielding), magnetic field shielding (low-frequency magnetic field and high-frequency magnetic field shielding), and electromagnetic field shielding (i.e., shielding of electromagnetic waves) according to its principle. The electromagnetic shielding material is generally a metal material or a metal alloy material. Such materials can reflect electromagnetic waves incident on their surfaces while preventing the electromagnetic waves from penetrating. Generally, different types of electromagnetic shielding materials are selected for different frequencies of electromagnetic waves.
After the wave-absorbing material and the electromagnetic shielding material are combined into the composite material, most of incident electromagnetic waves are converted into heat energy loss after being absorbed by the wave-absorbing material layer for the first time, and a small part of the electromagnetic waves are reflected by the shielding material layer after being transmitted and then are absorbed by the wave-absorbing material layer for the second time. Therefore, the wave-absorbing shielding material is an important composite material.
SUMMERY OF THE UTILITY MODEL
The utility model provides an adaptation frequency is wide, absorbs that shielding effect is good, structure thickness adjustable inhale ripples shielding combined material.
The purpose of the utility model can be realized by the following technical proposal:
a composite wave-absorbing shielding material comprises a release layer, a shielding material layer and a wave-absorbing material layer; the release layer comprises a release film layer and a first adhesive layer; the shielding material layer comprises a high-frequency shielding layer and a low-frequency shielding layer, and the two layers are bonded through a second adhesive layer; the wave-absorbing material layer is a composite material layer consisting of one or more wave-absorbing fillers and a polymer base material, and the middle of the two layers is bonded by a third adhesive layer when the number of the layers is two.
The high-frequency shielding layer is one of copper foil, aluminum foil or silver foil with the thickness of 0.01-1 mm;
the low-frequency shielding layer is made of an iron-nickel alloy material with the thickness of 0.01-1 mm, preferably, the surface of the low-frequency shielding layer is subjected to acid etching treatment;
the wave-absorbing material layer is preferably formed by coating a layer of a wave-absorbing material with a thickness of 0.03-2 mm; the wave-absorbing filler is one or a mixture of ferrite powder, carbonyl iron powder, flaky iron-silicon-aluminum alloy powder, flaky iron-silicon-chromium alloy powder and nanocrystalline alloy powder; the polymer base material is one or a mixture of more of polyurethane, epoxy resin, phenolic resin, silicon rubber and polyolefin elastomer.
The first adhesive layer, the second adhesive layer and the third adhesive layer are all one of substrate double-sided adhesive or acrylic acid type substrate-free adhesive, and the thickness of the first adhesive layer, the second adhesive layer and the third adhesive layer is 0.01-0.1 mm.
The utility model has the advantages of:
by compounding wave-absorbing materials or shielding materials with different thicknesses and different functions into an integral composite material according to a certain sequence, in a complex electromagnetic environment in electronic equipment, for example, when the electromagnetic wave-absorbing composite material is used, the wave-absorbing material layer is close to one side of an electromagnetic wave source, and the shielding material layer is far away from one side of the electromagnetic wave source, so that the electromagnetic wave-absorbing composite material has the effects of electromagnetic absorption and shielding for electromagnetic waves from low frequency to high frequency. According to different electromagnetic wave absorption shielding requirements, the wave absorbing filler in different wave absorbing materials can be selected, for example, carbonyl iron powder is used as the wave absorbing filler with the frequency of more than 5GHz, iron-silicon-chromium alloy is used as the wave absorbing filler with the frequency of less than 100MHz, and the like. The low-frequency shielding layer has insufficient adhesive strength for common adhesives, so that the adhesive strength is increased by adopting an acid etching surface treatment mode; in addition, the high polymer base materials such as polyurethane, epoxy resin and the like in the wave absorbing material layer can be directly coated on the surface of the processed low-frequency shielding layer material in a slurry form and are tightly bonded, so that the process of gluing or rubberizing can be saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic view of the longitudinal cross-section of the composite wave-absorbing shielding material of the present invention;
FIG. 2 is a schematic view of another composite wave-absorbing shielding material of the present invention showing a longitudinal cross-section structure;
Detailed Description
The present invention is further illustrated by the following examples, which are not limited to the following embodiments, but are only used for the specific illustration of the present invention, and the technical personnel in the field can completely select the formula or the process parameters according to the present invention, which is the protection scope of the present invention.
It should be noted that the drawings provided in the present embodiment are only schematic illustrations of the basic structure of the present invention, and only the structural components related to the present invention are shown in the drawings, and the form, the number, and the ratio of the components may be changed in the actual implementation.
Example 1
As shown in fig. 1, a composite wave-absorbing shielding material comprises a release layer 1, a shielding material layer 2 and a wave-absorbing material layer 3;
the release layer 1 comprises a PET release film layer 10 with the thickness of 0.05mm and a first adhesive layer 11, wherein the adhesive layer is acrylic acid type base material-free glue with the thickness of 0.03 mm;
the shielding material layer 2 comprises a high-frequency shielding layer 20, a low-frequency shielding layer 21 and a second adhesive layer 22; the high-frequency shielding layer is an aluminum foil with the thickness of 0.3 mm; the low-frequency shielding layer is made of iron-nickel alloy with the thickness of 0.2mm, and the surface of the iron-nickel alloy is subjected to acid etching treatment by dilute phosphoric acid solution in advance; the second adhesive layer is acrylic acid type base material-free glue, and the thickness of the second adhesive layer is 0.03 mm;
the wave-absorbing material layer 3 is made of two layers of materials, wherein:
the thickness of the first layer of wave-absorbing material 31 is 0.5mm, the wave-absorbing filler is carbonyl iron powder, and the polymer base material is silicon rubber;
the thickness of the second layer of wave-absorbing material 32 is 0.2mm, the wave-absorbing filler is sheet iron-silicon-aluminum alloy powder, and the polymer base material is polyurethane
A third adhesive layer 33 is arranged between the first layer of wave-absorbing material 31 and the second layer of wave-absorbing material 32 for bonding, and the third adhesive layer is a foam base material double-sided adhesive tape with the thickness of 0.1 mm.
The composite wave-absorbing shielding material in the embodiment can be simultaneously suitable for electromagnetic wave absorption and electromagnetic interference suppression of high-frequency and low-frequency wave bands. The loss capacity to electromagnetic waves can reach-10 dB to-20 dB under the high-frequency of more than 10GHz, and the loss to electromagnetic waves can also reach at least more than-3 dB under the low-frequency of 2GHz to 6 GHz.
Example 2
As shown in fig. 2, a composite wave-absorbing shielding material includes a release layer 1, a shielding material layer 2 and a wave-absorbing material layer 3;
the release layer 1 comprises a PET release film layer 10 with the thickness of 0.03mm and a first adhesive layer 11, wherein the adhesive layer is acrylic acid type base material-free glue with the thickness of 0.01 mm;
the shielding material layer 2 comprises a high-frequency shielding layer 20, a low-frequency shielding layer 21 and a second adhesive layer 22; the high-frequency shielding layer is a copper foil with the thickness of 0.05 mm; the low-frequency shielding layer is made of iron-nickel alloy with the thickness of 0.05mm, and the surface of the iron-nickel alloy is subjected to acid etching treatment by dilute phosphoric acid solution in advance; the second adhesive layer is acrylic acid type base material-free glue, and the thickness of the second adhesive layer is 0.01 mm;
the wave-absorbing material layer 3 is a single-layer material, the thickness of the first layer of wave-absorbing material 31 is 0.05mm, the wave-absorbing filler is iron-silicon-chromium alloy powder, and the polymer base material is epoxy resin;
the composite wave-absorbing shielding material in the embodiment is suitable for electromagnetic wave absorption and electromagnetic interference suppression in a low-frequency band. The wave-absorbing material layer has a relatively obvious absorption effect on electromagnetic waves below 1GHz, and in addition, the low-frequency shielding material layer also has a very good isolation effect on ultralow-frequency electromagnetic waves at the kHz level.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be defined thereby, and any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention.
Claims (6)
1. A composite wave-absorbing shielding material is characterized by comprising a release layer, a shielding material layer and a wave-absorbing material layer; the release layer comprises a release film layer and a first adhesive layer; the shielding material layer comprises a high-frequency shielding layer and a low-frequency shielding layer, and the two layers are bonded through a second adhesive layer; the wave-absorbing material layer is a composite material layer consisting of one or more wave-absorbing fillers and a polymer base material, and the middle of the two layers is bonded by a third adhesive layer when the number of the layers is two.
2. The composite wave-absorbing shielding material of claim 1, wherein the high-frequency shielding layer is one of a copper foil, an aluminum foil or a silver foil with a thickness of 0.01-1 mm.
3. The composite wave-absorbing shielding material of claim 1, wherein the low-frequency shielding layer is made of iron-nickel alloy with a thickness of 0.01-1 mm.
4. The composite wave-absorbing shielding material of claim 3, wherein the iron-nickel alloy is an iron-nickel alloy with the surface subjected to acid etching treatment.
5. A composite wave-absorbing shielding material according to claim 1, wherein the thickness of each layer of the wave-absorbing material layer is 0.03-2 mm.
6. The composite wave-absorbing shielding material of claim 1, wherein the first adhesive layer, the second adhesive layer and the third adhesive layer are all one of a double-sided adhesive tape with a base material or an acrylic acid type adhesive tape without a base material, and the thickness of the first adhesive layer, the second adhesive layer and the third adhesive layer is 0.01-0.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922466422.9U CN211630732U (en) | 2019-12-31 | 2019-12-31 | Composite wave-absorbing shielding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922466422.9U CN211630732U (en) | 2019-12-31 | 2019-12-31 | Composite wave-absorbing shielding material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211630732U true CN211630732U (en) | 2020-10-02 |
Family
ID=72634549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922466422.9U Expired - Fee Related CN211630732U (en) | 2019-12-31 | 2019-12-31 | Composite wave-absorbing shielding material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211630732U (en) |
-
2019
- 2019-12-31 CN CN201922466422.9U patent/CN211630732U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201002 |