CN213680494U - Adhesion type electromagnetic shielding film - Google Patents
Adhesion type electromagnetic shielding film Download PDFInfo
- Publication number
- CN213680494U CN213680494U CN202022319151.7U CN202022319151U CN213680494U CN 213680494 U CN213680494 U CN 213680494U CN 202022319151 U CN202022319151 U CN 202022319151U CN 213680494 U CN213680494 U CN 213680494U
- Authority
- CN
- China
- Prior art keywords
- electromagnetic shielding
- layer
- carbon nanofiber
- release layer
- adhesive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000010410 layer Substances 0.000 claims abstract description 93
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000012528 membrane Substances 0.000 claims abstract description 46
- 239000002134 carbon nanofiber Substances 0.000 claims abstract description 43
- 239000012790 adhesive layer Substances 0.000 claims abstract description 34
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 11
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 17
- 239000010408 film Substances 0.000 description 43
- 239000000463 material Substances 0.000 description 25
- 230000003647 oxidation Effects 0.000 description 10
- 238000007254 oxidation reaction Methods 0.000 description 10
- 229920000049 Carbon (fiber) Polymers 0.000 description 7
- 239000004917 carbon fiber Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000003763 carbonization Methods 0.000 description 6
- 238000005087 graphitization Methods 0.000 description 6
- 239000002121 nanofiber Substances 0.000 description 6
- 229920002545 silicone oil Polymers 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 229910021392 nanocarbon Inorganic materials 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000010041 electrostatic spinning Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000001523 electrospinning Methods 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Laminated Bodies (AREA)
Abstract
The application provides an adhesion type electromagnetic shielding film, and belongs to the technical field of electromagnetic shielding. The electromagnetic shielding film comprises a first release layer, a first bonding layer, a carbon nanofiber film, a second bonding layer and a second release layer which are sequentially overlapped from top to bottom. In the electromagnetic shielding film, the carbon nanofiber film mainly plays a role in electromagnetic shielding; the two surfaces of the carbon nanofiber membrane are provided with the bonding layer and the release layer, and one or two release layers are torn off when the carbon nanofiber membrane is used, so that the carbon nanofiber membrane can be directly adhered to the surface of an electronic product; meanwhile, the adhesive layer and the release layer are arranged, so that the carbon nanofiber membrane is protected, the microstructure of the carbon nanofiber membrane is prevented from being damaged, and the electromagnetic shielding membrane can play an electromagnetic shielding effect for a long time.
Description
Technical Field
The application relates to the technical field of electromagnetic shielding, in particular to an adhesion type electromagnetic shielding film.
Background
In modern life, people are exposed to more and more electronic devices, such as various household appliances, portable electronic products such as mobile phones and wearable devices which are in the future. The communication systems of these devices are all dependent on the use of electromagnetic waves. On one hand, the users can enjoy the high efficiency and convenience brought by the application of electromagnetic waves, and on the other hand, the users suffer from electromagnetic pollution. Electromagnetic radiation is an invisible pollution generated by electronic equipment, and other electronic equipment can be subjected to electromagnetic interference, so that the normal operation of the equipment is affected, and even information leakage can be caused.
In order to reduce and avoid the interference of electromagnetic waves, electromagnetic shielding materials are widely researched and applied. The electromagnetic shielding material absorbs and reflects electromagnetic waves reaching the surface of the material within a certain range, and thus the shielding effectiveness of the material depends on absorption loss and reflection loss. The traditional shielding material usually uses a metal material with good conductivity, and carbon-based wave-absorbing materials, including carbon powder, graphite powder, carbon nanotubes, carbon fibers, graphene and the like, are also widely concerned due to the excellent performance. The metal material generally has higher density, is not beneficial to the weight reduction of equipment and is not corrosion-resistant. The carbon material has good conductivity, light weight and corrosion resistance, but is generally applied by compounding with resin into a sheet material, and the preparation process is complex.
The inventor prepares a carbon nanofiber membrane (CN 111170316a) which has good electromagnetic shielding performance. However, it is not easy to be installed on an electronic product, and the structure is easily damaged, and the electromagnetic shielding effect cannot be continuously achieved.
SUMMERY OF THE UTILITY MODEL
The application aims to provide an adhesion type electromagnetic shielding film which is good in electromagnetic shielding effect, convenient to directly adhere and long in service life.
The application provides an adhere formula electromagnetic shielding film, from the top down overlap in proper order from type layer, first tie coat, nanometer carbon fiber membrane, second tie coat and second from type layer including.
The nano carbon fiber film has the advantages of fine fiber diameter (reaching nano level or submicron level), more compact fiber stacking, stronger continuity, better conductivity, good flexibility and the like, and the electromagnetic shielding effect is good. The adhesive layer and the release layer are arranged on two surfaces of the carbon nanofiber membrane, the adhesive layer plays a role in adhering the carbon nanofiber membrane and an electronic product, the release layer is a thin film or a paper sheet coated with an anti-sticking substance and plays a role in protecting the adhesive layer from being polluted, and when the electronic product is used, one or two release layers are torn down and can be directly adhered to the surface of the electronic product; meanwhile, the adhesive layer and the release layer are arranged, so that the carbon nanofiber membrane is protected, the microstructure of the carbon nanofiber membrane is prevented from being damaged, and the electromagnetic shielding membrane can play an excellent electromagnetic shielding effect for a long time. In practical use, one or more layers of electromagnetic shielding films can be selected to be adhered according to the requirement of the electronic product on the electromagnetic shielding performance, and the electromagnetic shielding effect is correspondingly enhanced along with the increase of the number of layers. When the multi-layer electromagnetic shielding film is used, the first release layer and the second release layer are torn off, and the carbon nanofiber film with the bonding layer is overlapped and adhered.
In one possible embodiment, the carbon nanofiber membrane has a thickness of 30 to 300 μm. The thickness of the carbon nanofiber membrane is within the range, so that the shielding effect of the electromagnetic shielding membrane can meet the shielding requirement of electronic products, and the electromagnetic wave shielding membrane has a good shielding effect.
In one possible embodiment, the carbon nanofiber membrane has a fiber average diameter of 100-500 nm. The carbon nanofiber membrane can be prepared in an electrostatic spinning mode through pre-oxidation, carbonization and graphitization, the carbon nanofibers are connected with one another to form a developed conductive network, and pores among the fibers are also in a nanoscale or submicron level, so that the electromagnetic shielding effect of the carbon nanofibers is better. After the preparation method is used for preparing the electromagnetic shielding film, the electromagnetic shielding film has good electromagnetic shielding performance.
In one possible embodiment, the thickness of the first bonding layer and the second bonding layer is 1-10 μm, and the material is pressure sensitive adhesive and is attached to two surfaces of the carbon nanofibers by means of gum processing. The thickness of the bonding layer is within the range, so that a good bonding effect can be achieved, the subsequent adhesion with an electronic product is facilitated, and the electromagnetic shielding film can maintain good flexibility.
In one possible embodiment, the thickness of the first release layer and the second release layer is 20-100 μm. The thickness of the release layer is within the range, so that the carbon nanofiber membrane and the bonding layer can be well protected, the bonding layer is not polluted when not used, good viscosity is kept, the bonding layer is easy to separate from the bonding layer when used, and the integrity of the bonding layer and the shielding layer is not damaged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments are briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive efforts and also belong to the protection scope of the present application.
Fig. 1 is a schematic layer structure diagram of an adhesive electromagnetic shielding film according to an embodiment of the present disclosure.
Icon: 110-a first release layer; 120-a first tie layer; 130-carbon nanofiber membranes; 140-a second adhesive layer; 150-second release layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Fig. 1 is a schematic layer structure diagram of an adhesive electromagnetic shielding film according to an embodiment of the present disclosure. Referring to fig. 1, in the embodiment of the present invention, the adhesive electromagnetic shielding film includes a first release layer 110, a first adhesive layer 120, a carbon nanofiber film 130, a second adhesive layer 140, and a second release layer 150, which are sequentially overlapped from top to bottom.
The carbon nanofiber membrane 130 has a fine fiber diameter (reaching a nanometer level or a submicron level), a tighter fiber stack, a stronger continuity, a better conductivity, a good flexibility, and a good electromagnetic shielding effect. Two surfaces of carbon nanofiber membrane 130 are provided with the tie coat and leave the type layer, and when using, tear one of them or two-layer from the type layer, can directly adhere on the surface of electronic product, simultaneously, through the tie coat with leave the setting on type layer, can make carbon nanofiber membrane 130 protected, avoid carbon nanofiber membrane 130's microstructure to receive destruction, make the electromagnetic shielding membrane can play the effect of electromagnetic shielding for a long time.
Alternatively, the filamentous nanocarbon film 130 may have a thickness of 30 to 300 μm. For example: the carbon nanofiber membrane 130 has a thickness of 30 μm, 60 μm, 120 μm, 150 μm, 180 μm, 210 μm, 240 μm, 270 μm, or 300 μm. Further, the nano carbon fiber film 130 has an area density of 60 to 600g/m2。
In the embodiment of the present application, the average fiber diameter of the carbon nanofiber membrane 130 is 100-500 nm. For example: the carbon nanofiber membrane 130 has an average fiber diameter of 100nm, 200nm, 300nm, 400nm, or 500 nm.
The carbon nanofiber membrane 130 has a fine average fiber diameter, and can be prepared by electrospinning, pre-oxidation, carbonization, and graphitization. For example: dissolving PAN powder in DMF to prepare a PAN solution, and performing electrostatic spinning to prepare a PAN nanofiber membrane; placing the PAN nanofiber membrane in a pre-oxidation furnace, and carrying out pre-oxidation treatment to obtain a PAN pre-oxidation membrane; placing the PAN pre-oxidation film in a carbonization furnace, and performing carbonization treatment to obtain a carbonized film; and placing the carbonized film in a graphitization furnace for graphitization treatment to obtain the nano carbon fiber film 130 for electromagnetic shielding.
In the embodiment of the present application, the first adhesive layer 120 and the second adhesive layer 140 each have a thickness of 1 to 10 μm. For example: the first adhesive layer 120 and the second adhesive layer 140 each have a thickness of 1 μm, 3 μm, 5 μm, 8 μm, or 10 μm. The thicknesses of the first adhesive layer 120 and the second adhesive layer 140 may be the same or different, and the present application is not limited thereto. Optionally, the areal densities of the first tie layer 120 and the second tie layer 140 are each 1-10g/m2。
Optionally, the first adhesive layer 120 and the second adhesive layer 140 are both pressure sensitive adhesive layers. For example: the carbon nanofiber membrane 130 is subjected to a double-sided adhesive process to attach a pressure-sensitive adhesive (for example, a resin-type pressure-sensitive adhesive or a rubber-type pressure-sensitive adhesive) to form the first adhesive layer 120 and the second adhesive layer 140. Alternatively, the adhesive may be knife coated, brush coated, roller coated, spray coated, or calender coated on the nanofiber film or the release layer to form the first adhesive layer 120 and the second adhesive layer 140.
The embodiments of the present applicationIn the above, the thickness of the first release layer 110 and the second release layer 150 is 20 to 100 μm. For example: the thicknesses of the first release layer 110 and the second release layer 150 are each 20 μm, 40 μm, 60 μm, 80 μm, or 100 μm. The thicknesses of the first release layer 110 and the second release layer 150 may be the same or different, and the application is not limited thereto. Optionally, the areal densities of the first release layer 110 and the second release layer 150 are both 30-150g/m2。
Optionally, the first release layer 110 and the second release layer 150 are both release film layers or release paper layers. For example: one or more of PTFE, PET, OPP, PC, PS, PMMA, PE and PVC. Or silicone oil paper release paper. The first release layer 110 and the second release layer 150 may be formed on the first adhesive layer 120 and the second adhesive layer 140 by a press-fit manner; or the film compounded with the bonding layer and the release layer is compounded on the surface of the carbon nanofiber film 130 in a pressing manner.
In other embodiments, the first release layer 110 is a release film layer, and the second release layer 150 is a release paper layer. The material of the first release layer 110 and the second release layer 150 may be different, and is not limited in this application.
The carbon nanofiber membrane 130 provided by the application makes full use of the characteristics of good flexibility, conductivity, light weight and the like. Compared with the traditional carbon fiber and carbon fiber products, the carbon nanofiber membrane 130 is light in weight, thinner in fiber diameter, smaller in pore diameter and higher in porosity, can provide higher absorption loss, and is better in electromagnetic shielding effect. The first adhesive layer 120, the second adhesive layer 140, the first release layer 110 and the second release layer 150 are arranged, so that the electromagnetic shielding film can be adhered to the product body more effectively and quickly; but also protects the carbon nanofiber membrane 130 from damage to the microstructure of the membrane.
The electromagnetic shielding film provided by the application is simple in preparation process, convenient to use, light in weight, thin in body, high in shielding effectiveness, corrosion-resistant, long in service life and is an electromagnetic shielding product with excellent performance. In practice, the material may be adhered directly to the shield area or may be adhered between two shielded members. In a use scene with high shielding effectiveness requirements, a plurality of layers of electromagnetic shielding films can be adhered to meet the electromagnetic shielding requirements.
The adhesive electromagnetic shielding film can be directly adhered to the part of an electronic product to be shielded, and a good electromagnetic shielding effect is obtained. When the adhesive electromagnetic shielding film is used, the second release layer 150 (or the first release layer 110) is torn off, and then the second adhesive layer 140 (or the first adhesive layer 120) is adhered to the surface of the electronic product to be shielded, so that the electronic product with good electromagnetic shielding effect is obtained. The first release layer 110 and the second release layer 150 can be torn off, so that an adhesive layer is adhered to the inside of the electronic product to be shielded, and then the electronic product housing is adhered to the second adhesive layer 140. The electronic product can be a portable electronic product such as a household appliance and a mobile phone, a wearable device and the like, and the application is not limited as long as an electromagnetic shielding film can be adhered to the electronic product to achieve the purpose of shielding electromagnetic waves.
In order to improve the electromagnetic shielding effect of the electronic product, a plurality of layers of electromagnetic shielding films can be adhered to the electronic product, so that the electromagnetic shielding effect of the electronic product is better.
Example 1
Dissolving PAN powder in DMF to obtain a PAN solution, and performing electrostatic spinning to prepare a PAN nanofiber membrane; placing the PAN nanofiber membrane in a pre-oxidation furnace, and carrying out pre-oxidation treatment to obtain a PAN pre-oxidation membrane; placing the PAN pre-oxidation film in a carbonization furnace, and performing carbonization treatment to obtain a carbonized film; and placing the carbonized film in a graphitization furnace for graphitization treatment to obtain the carbon nanofiber film. The thickness of the carbon nanofiber membrane is 60 mu m, and the surface density is 120g/m2The nanofibers had an average diameter of 200nm and an electrical conductivity of 3000S/m.
In this example, silicone oil paper with a thickness of 50 μm and an areal density of 75g/m was selected as the release layer material2. In this embodiment, an acrylate pressure-sensitive adhesive is selected as the adhesive layer material, the thickness of the coated adhesive layer is 10 μm, and the areal density is 10g/m2. Specifically, a blade coating mode is adopted, the solution of the acrylate pressure-sensitive adhesive is coated on silicone oil paper, and the silicone oil paper is covered on two surfaces of the carbon nanofiber membrane after being dried to carry out rolling compounding. Wherein the acrylate pressure-sensitive adhesiveCoating weight 10g/m2The coating speed is 10m/min, and the drying temperature is 80 ℃; the rolling winding speed is 10m/min, and the rolling pressure is 1 MPa.
The adhesion type electromagnetic shielding film provided by the embodiment has good flexibility, can be bent and folded at will, and can be cut into any size and shape. In practical application, one side of the silicone oil paper can be torn off to obtain the surface density of 103g/m2The electromagnetic shielding film of (1). According to the method for measuring the shielding effectiveness of the planar shielding material by GJB 8820-2015 electromagnetic shielding material, the characteristics of the adhesive electromagnetic shielding film provided by the embodiment are shown, and the material has a shielding effectiveness of 31dB in a frequency range of 30MHz-18GHz and can be adhered to an application area needing shielding in electronic products such as mobile phones, wearable equipment, computers, routers and the like. The material has better shielding efficiency in a wider frequency band, and can play an effective electromagnetic shielding role in 5G communication equipment particularly in a frequency band of 3300MHz-5000 MHz.
Example 2
The preparation method of the material of this embodiment is the same as that of embodiment 1, and different using methods are adopted when the material is applied, specifically, one layer of silicone oil paper of the two electromagnetic shielding films is torn off and then adhered to each other and then adhered to a using area.
According to the method for measuring the shielding effectiveness of the planar shielding material by GJB 8820-2015 electromagnetic shielding material, the two-layer adhesive electromagnetic shielding film provided by the embodiment is characterized, and the shielding effectiveness of the material in the frequency range of 30MHz-18GHz reaches 62 dB. Therefore, the electromagnetic shielding method and the electromagnetic shielding device can be applied to electromagnetic shielding scenes of military instruments, aerospace equipment and the like.
Example 3
The preparation method of the material of this embodiment is the same as that of embodiment 1, and different application methods are adopted when the material is applied, specifically, the prepared adhesive type carbon nanofiber membrane for electromagnetic shielding is adhered to an application area, and then two layers are adhered on the basis.
According to the method for measuring the shielding effectiveness of the planar shielding material by GJB 8820-2015 electromagnetic shielding material, the three-layer adhesive electromagnetic shielding film provided by the embodiment is characterized, and the shielding effectiveness of the material in the frequency range of 30MHz-18GHz reaches 96 dB. Therefore, the electromagnetic shielding device can be widely applied to electromagnetic shielding scenes such as radars, precision instruments and the like.
The above description is only a few examples of the present application and is not intended to limit the present application, and various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (5)
1. An adhesion type electromagnetic shielding film is characterized by comprising a first release layer, a first bonding layer, a carbon nanofiber film, a second bonding layer and a second release layer which are sequentially overlapped from top to bottom;
the thickness of the carbon nanofiber membrane is 30-300 mu m;
the average fiber diameter of the carbon nanofiber membrane is 100-500 nm.
2. The adhesive electromagnetic shielding film according to claim 1, wherein the first adhesive layer and the second adhesive layer have a thickness of 1 to 10 μm.
3. The adhesive electromagnetic shielding film of claim 2, wherein the first adhesive layer and the second adhesive layer are both pressure-sensitive adhesive layers.
4. The adhesive electromagnetic shielding film according to claim 1, wherein the first release layer and the second release layer have a thickness of 20 to 100 μm.
5. The adhesive electromagnetic shielding film according to claim 4, wherein the first release layer and the second release layer are release film layers or release paper layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022319151.7U CN213680494U (en) | 2020-10-16 | 2020-10-16 | Adhesion type electromagnetic shielding film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022319151.7U CN213680494U (en) | 2020-10-16 | 2020-10-16 | Adhesion type electromagnetic shielding film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213680494U true CN213680494U (en) | 2021-07-13 |
Family
ID=76757579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022319151.7U Active CN213680494U (en) | 2020-10-16 | 2020-10-16 | Adhesion type electromagnetic shielding film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213680494U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113372841A (en) * | 2021-07-16 | 2021-09-10 | 卡奔碳纤维技术(东莞)有限公司 | Surface decoration film of unmanned aerial vehicle exterior decoration paint spraying part and preparation method and application thereof |
-
2020
- 2020-10-16 CN CN202022319151.7U patent/CN213680494U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113372841A (en) * | 2021-07-16 | 2021-09-10 | 卡奔碳纤维技术(东莞)有限公司 | Surface decoration film of unmanned aerial vehicle exterior decoration paint spraying part and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7127235B2 (en) | Solid electrolyte sheet and manufacturing method thereof, all-solid battery, and manufacturing method of all-solid battery | |
| KR101396021B1 (en) | Densified conductive materials and articles made from same | |
| KR20180042319A (en) | A multi-layer composite comprising an adhesive and one or more nanofiber sheets | |
| CN108281666B (en) | Paper-based composite structure and battery | |
| WO2019092904A1 (en) | Porous electrode substrate and production method therefor | |
| TWI581698B (en) | Noise absorption sheet | |
| CN213680494U (en) | Adhesion type electromagnetic shielding film | |
| WO2014125735A1 (en) | Dust collector filter cloth | |
| CN110089208A (en) | Flexible electromagnetic shielding material, including its electromagnetic wave shielding type circuit module and have its electronic equipment | |
| JP2014175232A (en) | Cell separator | |
| Liu et al. | MXene-based films via scalable fabrication with improved mechanical and antioxidant properties for electromagnetic interference shielding | |
| JP6142387B2 (en) | Strain sensor and manufacturing method thereof | |
| KR101534298B1 (en) | a composition for electro-magnetic interference shielding film, a method of fabricating a electro-magnetic interference shielding film therewith and an electro-magnetic interference shielding film fabricated thereby | |
| JP2011522412A5 (en) | ||
| US11254842B2 (en) | Pressure-sensitive adhesive tape, method for manufacturing same, and electronic device comprising same | |
| JP2015053180A (en) | Battery separator | |
| JP3092638B2 (en) | Conductive adhesive sheet | |
| JP2007268405A (en) | Dielectric filter and application method of dielectric filter | |
| JP2007149761A (en) | Electromagnetic shielding sheet, and method of manufacturing same | |
| CN112251153B (en) | Carbon nanofiber membrane/silica gel composite material and preparation method thereof | |
| JP6497179B2 (en) | Gas diffusion layer and gas diffusion layer roll | |
| JP2021140950A (en) | Conductive pressure sensitive adhesive sheet | |
| JP2000024424A (en) | Filter medium | |
| CN215073714U (en) | Flexible electromagnetic shielding film and circuit board | |
| WO2024164411A1 (en) | Lithium-carbon composite band and preparation method therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |