CN113150376A - Simulation and preparation method of double-layer ultra-wideband thin wave-absorbing metamaterial - Google Patents
Simulation and preparation method of double-layer ultra-wideband thin wave-absorbing metamaterial Download PDFInfo
- Publication number
- CN113150376A CN113150376A CN202110410683.8A CN202110410683A CN113150376A CN 113150376 A CN113150376 A CN 113150376A CN 202110410683 A CN202110410683 A CN 202110410683A CN 113150376 A CN113150376 A CN 113150376A
- Authority
- CN
- China
- Prior art keywords
- wave
- layer
- double
- absorbing
- absorbing metamaterial
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
-
- 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
Abstract
The invention discloses a simulation and preparation method of a double-layer ultra-wideband thin wave-absorbing metamaterial; belongs to the technical field of broadband thin wave-absorbing metamaterial. The invention aims to solve the technical problems of narrow effective absorption bandwidth and large material thickness in the existing wave-absorbing metamaterial. The method comprises the following steps: preparing a PVA aqueous solution, and adding graphene to obtain a turbid liquid; filling the upper and lower layer molds; compounding the two layers to obtain a double-layer ultra-wideband thin wave-absorbing metamaterial; and testing the wave absorbing performance of the double-layer ultra-wideband thin wave absorbing metamaterial to obtain a reflection loss curve, and comparing the reflection loss curve with a simulation result of CST Studio Suite to verify the effective microwave absorbing effect of the ultra-wideband. The preparation method disclosed by the invention is simple, high in preparation efficiency, wide in effective absorption bandwidth, free of using special equipment, capable of realizing industrial large-scale production and wide in application prospect.
Description
Technical Field
The invention belongs to the technical field of ultra-wideband thin wave-absorbing metamaterials.
Background
With the fact that the traditional wave-absorbing material cannot meet the requirements of thinner, lighter, wider and stronger wave-absorbing performance, the application of the metamaterial in the wave-absorbing field is particularly important, but most of the existing metamaterials have one or more fixed resonant frequencies, and the effective absorption range cannot cover a wider microwave working waveband. Increasing the thickness of the metamaterial can enhance the wave-absorbing performance to a certain extent, but due to the limitation in engineering application, the metamaterial with too thick thickness cannot be used for microwave absorption, and the thin metamaterial cannot realize effective absorption of a wider frequency band; meanwhile, although broadband wave absorbing effects can be obtained by adopting some wave absorbing materials with higher density, such as carbonyl iron, ferrite and the like, the wave absorbing materials are not beneficial to practical use due to the fact that the wave absorbing materials are too heavy in relative mass. Therefore, it is needed to design and prepare a wave-absorbing material with the characteristics of wide frequency band, light weight, convenience for engineering application, excellent mechanical properties, and the like.
Disclosure of Invention
The invention provides a simulation and preparation method of a double-layer ultra-wideband thin wave-absorbing metamaterial, aiming at solving the technical problems of narrow effective absorption bandwidth and larger material thickness in the existing wave-absorbing metamaterial.
In order to solve the technical problems, the simulation and preparation method of the double-layer ultra-wideband thin wave-absorbing metamaterial provided by the invention is carried out according to the following steps:
firstly, adding polyvinyl alcohol (PVA) powder into purified water, stirring the PVA powder for 1.5h by cold water, stirring the PVA powder to be transparent by a magnetic stirrer under the heating of water bath at the temperature of 80 ℃ to obtain PVA aqueous solution, then adding graphene (C) powder, and stirring the mixture for 5h in a ball mill at the rotating speed of 400-500 rpm to obtain turbid liquid;
secondly, spraying a release agent on the glass plate, then placing the glass plate in a 170 ℃ oven for drying for 15min, taking out the glass plate, then covering a layer of glass fiber, placing the paper honeycomb plate on the glass fiber, finally pressing a glass plate on the glass plate, placing the whole in a 120 ℃ oven for drying for 90min, completely bonding the paper honeycomb plate and the glass fiber together, and removing the whole from the glass plate to obtain a lower-layer honeycomb plate mold;
filling the suspension obtained in the step one into the lower-layer honeycomb plate die obtained in the step two according to the designed lower-layer structure, drying in a 50 ℃ drying oven for 15min, and repeating for 2-3 times until the dried honeycomb structure is completely filled to obtain a lower-layer wave-absorbing metamaterial;
fourthly, preparing an upper honeycomb plate die according to the designed upper layer structure, filling the suspension obtained in the step one into the upper honeycomb plate die according to the designed upper layer structure, drying in a 50 ℃ oven for 15min, repeating for 2-3 times until the dried honeycomb structure is completely filled, and obtaining the upper wave-absorbing metamaterial with the thickness;
fifthly, compounding the lower wave-absorbing metamaterial and the upper wave-absorbing metamaterial obtained in the third step and the fourth step together according to corresponding positions to obtain a double-layer ultra-wideband thin wave-absorbing metamaterial;
and sixthly, testing the wave absorbing performance of the double-layer ultra-wideband thin wave absorbing metamaterial obtained in the fifth step to obtain a reflection loss curve, and comparing the reflection loss curve with a simulation result of CST Studio Suite to verify the effective microwave absorbing effect of the ultra-wideband.
Further defined, the concentration of the aqueous PVA solution in step one is 5 wt.% to 10 wt.%.
Further defined, the concentration of the aqueous PVA solution in step one is 8 wt.%.
Further limiting, in the first step, the mass ratio of the polyvinyl alcohol powder to the graphene powder is 10.5: adding graphene (C) powder in a ratio of 16.
Further defined, the step-ball mill is replaced with a vacuum blender.
Further, in the third step, the suspension A is filled into a paper honeycomb board and then naturally air-dried at room temperature.
And further limiting, in the third step, filling the paper honeycomb plate with the suspension A, and then removing unnecessary parts in the structure.
Further, the wave absorption performance in the sixth step is tested by a free space method.
Further limit, the whole thickness is 8mm, and the upper and lower layer thicknesses are both 4 mm.
According to the simulation and preparation method of the double-layer ultra-wideband thin wave-absorbing metamaterial, disclosed by the invention, through structural simulation and experimental verification of the wave-absorbing metamaterial, the double-layer metamaterial capable of effectively absorbing microwaves within the ultra-wideband range of 5-18 GHz is successfully designed and prepared, and the overall thickness of the material is only 8 mm. According to the simulation result of the CST Studio Suite, the structure can be optimally designed to enable the thickness of the structure to be thinner without influencing the wave absorbing effect of the structure, and even wider and stronger wave absorbing performance can be obtained. The preparation method disclosed by the invention is simple, high in preparation efficiency, wide in effective absorption bandwidth, free of using special equipment, capable of realizing industrial large-scale production and wide in application prospect.
Drawings
FIG. 1 is a simulated structure diagram of a CST Studio Suite, (a) a lower layer structure, b) an upper layer structure, and (c) a dual layer metamaterial;
FIG. 2 is a diagram of a prepared double-layer metamaterial object, (a) a lower layer structure, b) an upper layer structure;
FIG. 3 is a simulation result of CST Studio Suite;
FIG. 4 is experimental test results for a two-layer metamaterial;
FIG. 5 shows the result of the simulation optimization design of CST Studio Suit.
Detailed Description
The simulation and preparation method of the double-layer ultra-wideband thin wave-absorbing metamaterial in the embodiment 1 comprises the following steps:
firstly, adding 10.5g of polyvinyl alcohol (PVA) powder into 200ml of purified water, stirring the mixture for 1.5h by using cold water, stirring the mixture to be transparent by using a magnetic stirrer under the condition of heating in a water bath at 80 ℃ to obtain 5 wt.% of PVA aqueous solution, adding 16g of graphene (C) powder, and stirring the mixture for 5h in a ball mill at the rotating speed of 400rpm to obtain suspension;
secondly, spraying a release agent on the glass plate, then placing the glass plate in an oven at 170 ℃ for drying for 15min, taking out the glass plate, then covering a layer of glass fiber, placing the paper honeycomb plate on the glass fiber, and finally pressing a glass plate on the paper honeycomb plate. Drying the whole in a 120 ℃ oven for 90min to completely bond the paper honeycomb plate and the glass fiber together, and taking off the whole from the glass plate to obtain a lower honeycomb plate die (figure 1 a);
filling the suspension obtained in the step one into the honeycomb plate mold A obtained in the step three according to the designed lower layer structure, drying in a 50 ℃ oven for 15min, and repeating until the dried honeycomb structure is completely filled to obtain the lower layer wave-absorbing metamaterial A;
fourthly, preparing an upper honeycomb plate die (figure 1b) according to the designed upper layer structure and the second step, filling the suspension obtained in the first step into the upper honeycomb plate die according to the designed upper layer structure, drying in a 50 ℃ oven for 15min, repeating for 2-3 times until the dried honeycomb structure is completely filled, and obtaining the upper wave-absorbing metamaterial with the thickness;
fifthly, compounding the lower wave-absorbing metamaterial and the upper wave-absorbing metamaterial obtained in the third step and the fourth step together according to corresponding positions to obtain a double-layer ultra-wideband thin wave-absorbing metamaterial;
and sixthly, testing the wave absorbing performance of the double-layer ultra-wideband thin wave absorbing metamaterial obtained in the fifth step to obtain a reflection loss curve, and comparing the reflection loss curve with a simulation result of CST Studio Suite to verify the effective microwave absorbing effect of the ultra-wideband.
FIG. 1 is a schematic diagram showing a simulation structure in the case of using a CST Studio Suite in the example, in which a white portion is empty and a blue portion is filled with a suspension A. FIG. 2 is a diagram of a prepared double-layer metamaterial real object, and FIG. 3 is a simulation result of CST Studio Suite, and the material can achieve effective absorption of electromagnetic waves in an ultra wide band of 5-18 GHz. FIG. 4 is an experimental test result of the double-layer metamaterial, and the line shape, resonance peak position, absorption strength and the like obtained by the test are well compounded with the simulation result. Fig. 5 is a simulation optimization design result obtained by using the CST sui, in which the thickness of the upper layer material is changed to make the entire double-layer metamaterial thinner, and it can be seen that effective absorption of the 5-18 GHz ultra-wideband can still be achieved when the thickness of the upper layer is changed to 2 mm.
The double-layer ultra-wideband thin wave-absorbing metamaterial is successfully designed and prepared, the ultra-wideband electromagnetic waves are effectively absorbed, the overall thickness of the material is thin, engineering application and large-scale production are facilitated, the performance of the material can be improved through further optimization design, and the double-layer ultra-wideband thin wave-absorbing metamaterial has a good development prospect.
Claims (9)
1. A simulation and preparation method of a double-layer ultra-wideband thin wave-absorbing metamaterial is characterized by comprising the following steps:
firstly, adding polyvinyl alcohol (PVA) powder into purified water, stirring the PVA powder for 1.5h by cold water, stirring the PVA powder to be transparent by a magnetic stirrer under the heating of water bath at the temperature of 80 ℃ to obtain PVA aqueous solution, then adding graphene (C) powder, and stirring the mixture for 5h in a ball mill at the rotating speed of 400-500 rpm to obtain turbid liquid;
secondly, spraying a release agent on the glass plate, then placing the glass plate in a 170 ℃ oven for drying for 15min, taking out the glass plate, then covering a layer of glass fiber, placing the paper honeycomb plate on the glass fiber, finally pressing a glass plate on the glass plate, placing the whole in a 120 ℃ oven for drying for 90min, completely bonding the paper honeycomb plate and the glass fiber together, and removing the whole from the glass plate to obtain a lower-layer honeycomb plate mold;
filling the suspension obtained in the step one into the lower-layer honeycomb plate die obtained in the step two according to the designed lower-layer structure, drying in a 50 ℃ drying oven for 15min, and repeating for 2-3 times until the dried honeycomb structure is completely filled to obtain a lower-layer wave-absorbing metamaterial;
fourthly, preparing an upper honeycomb plate die according to the designed upper layer structure, filling the suspension obtained in the step one into the upper honeycomb plate die according to the designed upper layer structure, drying in a 50 ℃ oven for 15min, repeating for 2-3 times until the dried honeycomb structure is completely filled, and obtaining the upper wave-absorbing metamaterial with the thickness;
fifthly, compounding the lower wave-absorbing metamaterial and the upper wave-absorbing metamaterial obtained in the third step and the fourth step together according to corresponding positions to obtain a double-layer ultra-wideband thin wave-absorbing metamaterial;
and sixthly, testing the wave absorbing performance of the double-layer ultra-wideband thin wave absorbing metamaterial obtained in the fifth step to obtain a reflection loss curve, and comparing the reflection loss curve with a simulation result of CST Studio Suite to verify the effective microwave absorbing effect of the ultra-wideband.
2. The simulation and preparation method of the double-layer ultra-wideband thin wave-absorbing metamaterial according to claim 1, wherein the concentration of the PVA aqueous solution in the first step is 5 wt.% to 10 wt.%.
3. The simulation and preparation method of the double-layer ultra-wideband thin wave-absorbing metamaterial according to claim 1, wherein the concentration of the PVA aqueous solution in the first step is 8 wt.%.
4. The simulation and preparation method of the double-layer ultra-wideband thin wave-absorbing metamaterial according to claim 1, wherein the first step is to mix polyvinyl alcohol powder and graphene powder according to a mass ratio of 10.5: adding graphene (C) powder in a ratio of 16.
5. The simulation and preparation method of the double-layer ultra-wideband thin wave-absorbing metamaterial according to claim 1, wherein a ball mill is adopted as a replacement step.
6. The simulation and preparation method of the double-layer ultra-wideband thin wave-absorbing metamaterial according to claim 1, wherein the suspension A is filled into a paper honeycomb plate and then naturally air-dried at room temperature in the third step.
7. The simulation and preparation method of the double-layer ultra-wideband thin wave-absorbing metamaterial according to claim 1, wherein in the third step, the paper honeycomb plate is filled with the suspension A, and then unnecessary parts in the structure are removed.
8. The simulation and preparation method of the double-layer ultra-wideband thin wave-absorbing metamaterial according to claim 1, wherein the wave-absorbing performance test in the sixth step is performed by a free space method or an arch frame method.
9. The simulation and preparation method of the double-layer ultra-wideband thin wave-absorbing metamaterial according to claim 1, wherein the overall thickness is 8mm, and the upper and lower layer thicknesses are both 4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110410683.8A CN113150376B (en) | 2021-04-14 | 2021-04-14 | Simulation and preparation method of double-layer ultra-wideband thin wave-absorbing metamaterial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110410683.8A CN113150376B (en) | 2021-04-14 | 2021-04-14 | Simulation and preparation method of double-layer ultra-wideband thin wave-absorbing metamaterial |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113150376A true CN113150376A (en) | 2021-07-23 |
| CN113150376B CN113150376B (en) | 2022-03-29 |
Family
ID=76868666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110410683.8A Active CN113150376B (en) | 2021-04-14 | 2021-04-14 | Simulation and preparation method of double-layer ultra-wideband thin wave-absorbing metamaterial |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113150376B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122734A (en) * | 2022-06-27 | 2022-09-30 | 盱眙欧佰特粘土材料有限公司 | Wave-absorbing composite material with double-layer inclined honeycomb sandwich structure and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591551A (en) * | 2015-01-16 | 2015-05-06 | 东华大学 | Preparation method of graphene-coated glass fiber composite material |
| CN105297530A (en) * | 2015-09-10 | 2016-02-03 | 苏州芳磊蜂窝复合材料有限公司 | Wave-absorbing honeycomb and preparation method thereof |
| CN105647468A (en) * | 2016-04-07 | 2016-06-08 | 兰州天烁新能源有限公司 | Wave-absorbing material based on grapheme and preparation method thereof |
| JP2016191017A (en) * | 2015-03-31 | 2016-11-10 | 国立大学法人北海道大学 | Production method of nanocarbon-containing functional porous body |
| CN106479433A (en) * | 2016-09-08 | 2017-03-08 | 东莞同济大学研究院 | A kind of Graphene composite wave-suction material and preparation method thereof |
| CN108633241A (en) * | 2017-03-23 | 2018-10-09 | 洛阳尖端技术研究院 | A kind of suction wave cellular material and preparation method thereof |
| CN109897214A (en) * | 2017-12-08 | 2019-06-18 | 深圳光启尖端技术有限责任公司 | Inhale wave honeycomb and its production method |
| CN110031923A (en) * | 2019-04-19 | 2019-07-19 | 电子科技大学 | Stretchable two-sided ultra wide band Terahertz absorbing material of formula and preparation method thereof |
| CN112250989A (en) * | 2020-11-05 | 2021-01-22 | 成都佳驰电子科技有限公司 | Wave-absorbing slurry and preparation method of honeycomb wave-absorbing material |
-
2021
- 2021-04-14 CN CN202110410683.8A patent/CN113150376B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591551A (en) * | 2015-01-16 | 2015-05-06 | 东华大学 | Preparation method of graphene-coated glass fiber composite material |
| JP2016191017A (en) * | 2015-03-31 | 2016-11-10 | 国立大学法人北海道大学 | Production method of nanocarbon-containing functional porous body |
| CN105297530A (en) * | 2015-09-10 | 2016-02-03 | 苏州芳磊蜂窝复合材料有限公司 | Wave-absorbing honeycomb and preparation method thereof |
| CN105647468A (en) * | 2016-04-07 | 2016-06-08 | 兰州天烁新能源有限公司 | Wave-absorbing material based on grapheme and preparation method thereof |
| CN106479433A (en) * | 2016-09-08 | 2017-03-08 | 东莞同济大学研究院 | A kind of Graphene composite wave-suction material and preparation method thereof |
| CN108633241A (en) * | 2017-03-23 | 2018-10-09 | 洛阳尖端技术研究院 | A kind of suction wave cellular material and preparation method thereof |
| CN109897214A (en) * | 2017-12-08 | 2019-06-18 | 深圳光启尖端技术有限责任公司 | Inhale wave honeycomb and its production method |
| CN110031923A (en) * | 2019-04-19 | 2019-07-19 | 电子科技大学 | Stretchable two-sided ultra wide band Terahertz absorbing material of formula and preparation method thereof |
| CN112250989A (en) * | 2020-11-05 | 2021-01-22 | 成都佳驰电子科技有限公司 | Wave-absorbing slurry and preparation method of honeycomb wave-absorbing material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122734A (en) * | 2022-06-27 | 2022-09-30 | 盱眙欧佰特粘土材料有限公司 | Wave-absorbing composite material with double-layer inclined honeycomb sandwich structure and preparation method thereof |
| CN115122734B (en) * | 2022-06-27 | 2023-11-03 | 盱眙欧佰特粘土材料有限公司 | Wave-absorbing composite material with double-layer inclined honeycomb sandwich structure and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113150376B (en) | 2022-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113524820B (en) | Wave-absorbing composite material and preparation method thereof | |
| CN108441067B (en) | Graphene-based honeycomb pyramid wave-absorbing material and preparation method and application thereof | |
| CN111592684B (en) | Preparation method of isolated thermoplastic elastomer composite microporous electromagnetic shielding material | |
| CN103700951A (en) | Composite media double-layer FSS (Frequency Selective Surface) structure SRR (Split Ring Resonator) metal layer ultra-light and thin wave-absorbing material | |
| Wang et al. | Marine polysaccharide-based electromagnetic absorbing/shielding materials: design principles, structure, and properties | |
| CN113150376B (en) | Simulation and preparation method of double-layer ultra-wideband thin wave-absorbing metamaterial | |
| CN109167181A (en) | A kind of graphical cellular unit broadband periodic absorbent structure | |
| CN111154455B (en) | Boron-doped mesoporous flower-like ferroferric oxide/carbon composite wave-absorbing material and preparation method thereof | |
| CN108601317B (en) | Preparation and application of broadband light metamaterial wave-absorbing structure | |
| CN110031923B (en) | Stretchable double-sided ultra-wideband terahertz wave-absorbing material and preparation method thereof | |
| CN109742554B (en) | Double-frequency Ku waveband circularly polarized sensitive wave absorber | |
| CN105514619A (en) | Ultra wideband material microwave absorber loaded with chip resistor | |
| CN110641130A (en) | Preparation method of wave-absorbing foam for absorbing low-frequency electromagnetic waves | |
| Wang et al. | A dual-layer radar absorbing material with fully embedded square-holes frequency selective surface | |
| CN106350003A (en) | Preparation method of porous graphene/ferroferric oxide composite absorbing material | |
| Zheng et al. | X-band full absorbing multi-layer foam with lightweight and flexible performance | |
| CN101444979A (en) | Frequency selection surface wave-absorbing material and preparation method thereof | |
| CN102316711B (en) | Wave-absorbing stealthy material with active carbon-fiber felt screen (ACFFS) structure and preparation method thereof | |
| CN203013399U (en) | PTFE insulating coaxial cable | |
| CN101760961A (en) | Method for preparing triangle-section polyacrylonitrile-based carbon fiber structural wave-absorbing material | |
| CN108357161B (en) | Graphene-based electromagnetic stealth and shielding integrated material and preparation method thereof | |
| CN110819044B (en) | Preparation method of graphene-ferroferric oxide/polyvinylidene fluoride composite film | |
| Gong et al. | Design of ultra wideband microwave absorber effectual for objects of arbitrary shape | |
| CN112590319A (en) | Preparation method of sound-insulation wave-absorbing material | |
| CN107818862B (en) | Transformer box used for railway communication signals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Jun Inventor after: Shen Zhenyu Inventor after: Jiang Haifeng Inventor after: Dong Guangran Inventor after: Dai Long Inventor after: Zhou Zhongxiang Inventor before: Li Jun Inventor before: Shen Zhenyu Inventor before: Liu Lulu Inventor before: Deng Nandong Inventor before: Zhou Zhongxiang |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |