CN106848596A - A kind of absorbing meta-material - Google Patents
A kind of absorbing meta-material Download PDFInfo
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- CN106848596A CN106848596A CN201510890256.9A CN201510890256A CN106848596A CN 106848596 A CN106848596 A CN 106848596A CN 201510890256 A CN201510890256 A CN 201510890256A CN 106848596 A CN106848596 A CN 106848596A
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Abstract
A kind of absorbing meta-material that the present invention is provided includes：High-k sheet material；Multiple micro-structurals are arranged on high-k sheet material；Wherein, micro-structural includes lightweight low dielectric material layer and/or the electric resistance structure layer being covered on the side surface of lightweight low dielectric material layer one, a part of micro-structural is arranged in horizontal direction along a surface of high-k sheet material, and another part micro-structural is arranged along the vertical direction vertical with surface in lamination.The present invention forms the comprehensive Design of micro-structural using high-k sheet material and by lightweight low dielectric material layer and/or electric resistance structure layer, the integral thickness of absorbing meta-material can be effectively reduced using high-k sheet material, the overall weight of absorbing meta-material can be effectively reduced using lightweight low dielectric material layer, touch screens are formed using electric resistance structure layer, Salisbury screens are formed by touch screens, the effect of ripple is inhaled so as to reach, while the effect of each layer of comprehensive absorbing meta-material, it is achieved thereby that the wave-absorbing effect of wideband.
Description
Technical field
The present invention relates to Material Field, more particularly, to a kind of absorbing meta-material.
Background technology
With making rapid progress for scientific technological advance, technology, various products with electromagnetic wave as medium are got over
Come more, influence of the electromagenetic wave radiation to environment also increasingly increases.Radio wave may be to airport environment
Interfere, cause airplane flight normally to take off；Mobile phone may can often disturb various precisions
The work of electronic medical equipment；Even common computer, the electromagnetic wave of carrying information can be also radiated,
It may be received and be reappeared in addition at several kilometers, so as to cause national defence, politics, economy, science and technology etc.
The leakage of aspect information.Therefore, electromagnetic pollution is administered, finding one kind can keep out and weaken electromagnetism amplitude
The material penetrated, i.e. absorbing material, it has also become a big problem of material science.In addition, absorbing material bag
Include military affairs to be also widely used in interior other side, such as stealthy machine, contact clothing etc..
Absorbing material is the class material that can absorb the electromagnetic wave energy for projecting its surface, and material absorbs
The primary condition of electromagnetic wave is：(1) when electromagnetic wave incident is on material, it can enter to greatest extent
Material internal, that is, require that material has matching properties；(2) the electromagnetism wave energy for entering material internal is rapid
Ground almost all is attenuated, i.e. attenuation characteristic.Realize that one of first method of condition is using special
Boundary condition, such as conductance high, magnetic conductance absorbing material high surface coating conductance, magnetic conductance close to sky
Pneumoelectric is led, the medium of magnetic conductance, makes electromagnetic wave incident to greatest extent；And realize second condition and then
Seeking material has electromagnetic consumable high.
Existing absorbing meta-material is made up of man-made microstructure and baseplate material, by changing artificial micro- knot
The absorbing material that the dielectric constant and magnetic conductivity of structure are obtained, to the electromagnetic wave phase of CF for common
For absorbing material, assimilation effect has had larger progress, but generally assimilation effect is relatively good
Frequency range it is very narrow, it is impossible to meet broadband absorbing requirement, while the weight of absorbing material is also than larger.
For the above-mentioned technical problem in correlation technique, effective solution is not yet proposed at present.
The content of the invention
In order to the working frequency for solving absorbing material electromagnetic wave absorption of the prior art is narrower and inhales ripple
The larger problem of the weight of material, the invention provides a kind of absorbing meta-material.
According to an aspect of the present invention, a kind of absorbing meta-material that the present invention is provided, including：Gao Jie
Electric constant sheet material；Multiple micro-structurals are arranged on high-k sheet material；Wherein, micro-structural includes light
Matter low dielectric material layer and/or the electric resistance structure layer being covered on the side surface of lightweight low dielectric material layer one,
A part of micro-structural is arranged in horizontal direction along a surface of high-k sheet material, and another part is micro-
Structure is arranged along the vertical direction vertical with surface in lamination.
In above-mentioned absorbing meta-material, the dielectric constant of high-k sheet material is more than 10, low Jie of lightweight
The dielectric constant of material layer is not more than 10.
In above-mentioned absorbing meta-material, in all micro-structurals, lightweight low dielectric material layer and resistance junction
The respective total number of plies of structure layer is identical.
In above-mentioned absorbing meta-material, in all micro-structurals, lightweight low dielectric material layer and resistance junction
The respective total number of plies of structure layer is differed.
In above-mentioned absorbing meta-material, the thickness of electric resistance structure layer is 0.020mm~0.030mm.
In above-mentioned absorbing meta-material, the surface of lightweight low dielectric material layer and electric resistance structure layer applies
There is glued membrane.
In above-mentioned absorbing meta-material, glued membrane includes polyamide glued membrane, polyethersulfone resin glued membrane, epoxy
One or more in propane glued membrane, acrylic acid glued membrane.
In above-mentioned absorbing meta-material, in each micro-structural, the area of electric resistance structure layer is less than light
The area of matter low dielectric material layer.
In above-mentioned absorbing meta-material, in each micro-structural, electric resistance structure layer and the low dielectric of lightweight
Material layer is rectangular, and the length of the two or wide equal.
In above-mentioned absorbing meta-material, lightweight low dielectric material layer and electric resistance structure layer have identical pair
Claim axle.
In above-mentioned absorbing meta-material, the working frequency range scope of absorbing meta-material is 1.3GHz~18GHz.
In above-mentioned absorbing meta-material, the surface density of absorbing meta-material is no more than 1.5kg/m2。
According to another aspect of the present invention, present invention also offers a kind of absorbing meta-material, including：Two
Individual high-k sheet material；Multiple micro-structurals are arranged between two high-k sheet materials；Wherein,
Micro-structural includes lightweight low dielectric material layer and/or is covered on the side surface of lightweight low dielectric material layer one
Electric resistance structure layer, a part of micro-structural arranges in horizontal direction along a surface of high-k sheet material
Cloth, another part micro-structural is arranged along the vertical direction vertical with surface in lamination.
The present invention is using high-k sheet material and by lightweight low dielectric material layer and/or electric resistance structure
Layer forms the comprehensive Design of micro-structural, and absorbing meta-material can be effectively reduced using high-k sheet material
Integral thickness, using lightweight low dielectric material layer (such as honeycomb layer, PMI froth beds)
The overall weight of absorbing meta-material can be effectively reduced, touch screens is formed using electric resistance structure layer, by electricity
Resistance screen forms Salisbury screens, and the effect of ripple is inhaled so as to reach, while each layer of comprehensive absorbing meta-material
Effect, it is achieved thereby that the wave-absorbing effect of wideband.Compared with individual layer micro-structural or pure material, the present invention
Absorbing meta-material can significantly improve wave-absorbing effect, surface density is no more than 1.5kg/m2。
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be right
The accompanying drawing to be used needed for embodiment is briefly described, it should be apparent that, it is attached in describing below
Figure is only some embodiments of the present invention, for those of ordinary skill in the art, is not being paid
On the premise of creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the top view of according to embodiments of the present invention 1 absorbing meta-material；
Fig. 2 is the left view of the absorbing meta-material of embodiment of the present invention Fig. 1；
Fig. 3 is the reflectance curve figure of the absorbing meta-material of Fig. 1 of the invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is entered
Row is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained
The every other embodiment for obtaining, belongs to the scope of protection of the invention.
The present invention provides a kind of absorbing meta-material, including high-k sheet material, multiple micro-structural arrangements
On the high-k sheet material, wherein, the micro-structural includes lightweight low dielectric material layer and/or covering
Electric resistance structure layer on the side surface of lightweight low dielectric material layer one, a part of micro-structural is along dielectric high
One surface of constant sheet material is arranged in horizontal direction, and another part micro-structural is erected along vertical with surface
Nogata is arranged in lamination.Wherein, the dielectric constant of the high-k sheet material in the present invention is more than 10,
And the high-k sheet material can be metallic plate, such as copper coin, aluminium sheet, meanwhile, the low dielectric of lightweight
The dielectric constant of material layer is not more than (i.e. less than or equal to) 10, and the lightweight low dielectric material layer
Can be honeycomb layer, PMI froth beds etc., the present invention using high-k sheet material and by
Lightweight low dielectric material layer and/or electric resistance structure layer form the comprehensive Design of micro-structural, using dielectric high
Constant sheet material can effectively reduce the integral thickness of absorbing meta-material, using lightweight low dielectric material layer (such as
Honeycomb layer, PMI froth beds etc.) overall weight of absorbing meta-material can be effectively reduced, utilize
Electric resistance structure layer forms touch screens, and Salisbury screens are formed by touch screens, and the effect of ripple is inhaled so as to reach
Really, while the effect of comprehensive each layer of absorbing meta-material, it is achieved thereby that the wave-absorbing effect of wideband.
Wherein, in all micro-structurals of absorbing meta-material, lightweight low dielectric material layer and electric resistance structure
The respective total number of plies of layer can be according to the actual requirements configured with identical or differ.Meanwhile,
On the vertical direction of absorbing material, multiple micro-structurals can stratification arrangement, the present invention number of plies is not done
It is specific to limit, can set according to the actual requirements, such as：The number of plies can be set to be odd number, can also set
It is set to even number.Meanwhile, in one end nearer apart from metallic plate, the top of bottom microstructured layers or under
Side, can be close to set the material layer of high-k, the number of plies and thickness of the material of the high-k
Degree need to determine according to the actual requirements, so as to further improve the wave-absorbing effect of the absorbing material.
Wherein, that electric resistance structure layer is 0.020mm~0.030mm.In a preferred embodiment, resistance junction
The thickness of structure layer is 0.025mm.Wherein, in each micro-structural, the electric resistance structure of electric resistance structure layer
It is vertical bar, the area of the area less than adjacent lightweight low dielectric material layer of electric resistance structure layer, and resistance junction
Structure layer and lightweight low dielectric material layer are rectangular, and the length of the two is equal, ordinary skill people
Member is it should be understood that the equal length of electric resistance structure layer and lightweight low dielectric material layer belongs to one and enumerates
Embodiment, it is also possible to which the width of electric resistance structure layer and lightweight low dielectric material layer is arranged to equivalence, this
Outward, lightweight low dielectric material layer and electric resistance structure layer have identical symmetry axis.
At every layer of absorbing meta-material in each micro-structural, the width of electric resistance structure layer and relative to
Position on the side surface of lightweight low dielectric material layer one is adjustable, for example, electric resistance structure layer can position
In the centre position of the side surface of lightweight low dielectric material layer one or marginal position, in preferred embodiment
In, electric resistance structure layer is covered in the centre position of lightweight low dielectric material layer.
Lightweight low dielectric material layer in micro-structural in absorbing meta-material of the invention on lamination arragement direction
Thickness can be regulation, the scope of the thickness of lightweight low dielectric material layer in 3.2mm to 9mm
Interior, in a preferred embodiment, the thickness of lightweight low dielectric material layer is 6.1mm.
In embodiment 1, as shown in figure 1, on a surface of high-k sheet material, inhaling ripple and surpassing
Include a micro-structural on material horizontal direction, in the micro-structural, electric resistance structure layer 2 is located at lightweight
The centre position of low dielectric material layer 1, as shown in Fig. 2 in the above-mentioned table with high-k sheet material
On the vertical vertical direction in face, the absorbing meta-material includes 6 micro-structurals, and each micro-structural includes light
Matter low dielectric material layer 1 and the electric resistance structure layer 2 being covered on the side surface of lightweight low dielectric material layer one,
Specifically, the absorbing material includes 1 floor height dielectric constant sheet material 3 and 6 micro-structurals, in Gao Jie
In 6 micro-structurals of the superimposed layer of electric constant sheet material 3 arrangement, one layer of resistance junction is covered in each micro-structural
Structure layer 2, certainly, in other implementations, can have between one or more adjacent layer and not have
There is electric resistance structure layer 2, that is to say, that in other embodiments, there are slightly that structure is only
Including lightweight low dielectric material layer 1, Fig. 3 is the reflectance curve figure of the absorbing meta-material of Fig. 1, its
In, X-axis be frequency (GHz), Y-axis is dB, from the figure 3, it may be seen that when absorbing material work frequently
When segment limit is 1.3GHz~18GHz, reflectivity is less than -10dB, and the absorbing material is in above-mentioned low-frequency range
With preferable absorbing property.
Each lightweight low dielectric material layer in the present invention, electric resistance structure layer and high-k sheet material it
Between can be combined together by the form of glued membrane, glued membrane include polyamide glued membrane, polyethersulfone resin glue
One or more in film, expoxy propane glued membrane, acrylic acid glued membrane.
Meanwhile, include present invention also offers a kind of absorbing meta-material：Two high-k sheet materials；
Multiple micro-structurals are arranged between two high-k sheet materials；Wherein, micro-structural includes low Jie of lightweight
Material layer and/or the electric resistance structure layer being covered on the side surface of lightweight low dielectric material layer one, a part
Micro-structural is arranged in horizontal direction along a surface of high-k sheet material, another part micro-structural edge
The vertical direction vertical with surface to be arranged in lamination.Wherein, the high-k sheet material in the present invention
Dielectric constant be more than 10, and the high-k sheet material can be metallic plate, such as copper coin, aluminium sheet,
Meanwhile, the dielectric constant of lightweight low dielectric material layer is not more than (i.e. less than or equal to) 10, and should
Lightweight low dielectric material layer can be honeycomb layer, PMI froth beds etc., in another implementation
In example, the present invention is by the way that on the premise of it ensure that broadband absorbing effect, absorbing material further passes through
Using two sheet materials of high-k, the overall thickness of absorbing meta-material can be further reduced.
Wherein, in this embodiment, in all micro-structurals of absorbing meta-material, the low dielectric material of lightweight
The respective total number of plies of the bed of material and electric resistance structure layer can according to the actual requirements be entered with identical or differ
Row is set.Meanwhile, on the vertical direction of absorbing material, multiple micro-structurals can stratification arrangement, this hair
It is bright that the number of plies is not specifically limited, can set according to the actual requirements, such as：The number of plies can be set to
It is odd number, can be configured as even number.
Meanwhile, in this embodiment, electric resistance structure layer is 0.020mm~0.030mm.Preferred real
Apply in example, the thickness of electric resistance structure layer is 0.025mm.In the absorbing material, low Jie of each lightweight
Can be combined by the form of glued membrane between material layer, electric resistance structure layer and high-k sheet material
Together, glued membrane includes polyamide glued membrane, polyethersulfone resin glued membrane, expoxy propane glued membrane, acrylate glue
One or more in film.
Additionally, in this embodiment, in each micro-structural, the area of electric resistance structure layer is less than lightweight
The area of low dielectric material layer, meanwhile, electric resistance structure layer and low Jie of lightweight with identical symmetry axis
Material layer, two-layer is rectangular, and the length of the two or wide equal, meanwhile, the work of the absorbing material
When making band limits for 1.3GHz~18GHz, the absorbing material has preferably suction in above-mentioned low-frequency range
Ripple performance.
The present invention is using high-k sheet material and by lightweight low dielectric material layer and/or electric resistance structure
Layer forms the comprehensive Design of micro-structural, and absorbing meta-material can be effectively reduced using high-k sheet material
Integral thickness, using lightweight low dielectric material layer (such as honeycomb layer, PMI froth beds)
The overall weight of absorbing meta-material can be effectively reduced, touch screens is formed using electric resistance structure layer, by electricity
Resistance screen forms Salisbury screens, and the effect of ripple is inhaled so as to reach, while each layer of comprehensive absorbing meta-material
Effect, it is achieved thereby that the wave-absorbing effect of wideband.Compared with individual layer micro-structural or pure material, the present invention
Absorbing meta-material can significantly improve wave-absorbing effect, surface density is no more than 1.5kg/m2。
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements made etc. all should be wrapped
It is contained within protection scope of the present invention.
Claims (13)
1. a kind of absorbing meta-material, it is characterised in that including：
High-k sheet material；
Multiple micro-structurals are arranged on the high-k sheet material；
Wherein, the micro-structural includes lightweight low dielectric material layer and/or is covered in the low dielectric of the lightweight
Electric resistance structure layer on the side surface of material layer one, a part of micro-structural is along the high-k sheet material
A surface arrange in horizontal direction, another part micro-structural is along the vertical side vertical with the surface
Arranged in lamination.
2. absorbing meta-material according to claim 1, it is characterised in that the high-k
The dielectric constant of sheet material is more than 10, and the dielectric constant of the lightweight low dielectric material layer is not more than 10.
3. absorbing meta-material according to claim 1, it is characterised in that in all micro-structurals,
The lightweight low dielectric material layer is identical with the electric resistance structure respective total number of plies of layer.
4. absorbing meta-material according to claim 1, it is characterised in that in all micro-structurals,
The lightweight low dielectric material layer is differed with the electric resistance structure respective total number of plies of layer.
5. absorbing meta-material according to claim 1, it is characterised in that the electric resistance structure layer
Thickness be 0.020mm~0.030mm.
6. absorbing meta-material according to claim 1, it is characterised in that the low dielectric of lightweight
The surface of material layer and electric resistance structure layer is applied with glued membrane.
7. absorbing meta-material according to claim 6, it is characterised in that the glued membrane includes poly-
It is a kind of or many in acid amides glued membrane, polyethersulfone resin glued membrane, expoxy propane glued membrane, acrylic acid glued membrane
Kind.
8. absorbing meta-material according to claim 1, it is characterised in that described micro- at each
In structure, the area of the area less than the lightweight low dielectric material layer of the electric resistance structure layer.
9. absorbing meta-material according to claim 8, it is characterised in that described micro- at each
In structure, the electric resistance structure layer and the lightweight low dielectric material layer are rectangular, and the length of the two
Or it is wide equal.
10. absorbing meta-material according to claim 8, it is characterised in that low Jie of lightweight
Material layer and electric resistance structure layer have identical symmetry axis.
11. absorbing meta-material according to claim any one of 1-10, it is characterised in that described
The working frequency range scope of absorbing meta-material is 1.3GHz~18GHz.
12. absorbing meta-material according to claim any one of 1-10, it is characterised in that described
The surface density of absorbing meta-material is no more than 1.5kg/m2。
A kind of 13. absorbing meta-materials, it is characterised in that including：
Two high-k sheet materials；
Multiple micro-structurals are arranged between described two high-k sheet materials；
Wherein, the micro-structural includes lightweight low dielectric material layer and/or is covered in the low dielectric of the lightweight
Electric resistance structure layer on the side surface of material layer one, a part of micro-structural is along the high-k sheet material
A surface arrange in horizontal direction, another part micro-structural is along the vertical side vertical with the surface
Arranged in lamination.
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| CN201510890256.9A CN106848596A (en) | 2015-12-04 | 2015-12-04 | A kind of absorbing meta-material |
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| CN109659703A (en) * | 2018-11-27 | 2019-04-19 | 中国科学院金属研究所 | A kind of broadband electro-magnetic wave absorption Meta Materials merged based on foam medium sill with metal structure |
| CN110380226A (en) * | 2019-06-06 | 2019-10-25 | 南京大学 | A kind of mechanical adjustable electromagnetic wave absorption Meta Materials for filling water |
| CN111048908A (en) * | 2018-10-12 | 2020-04-21 | 南京大学 | Design method of optical transparent broadband super-surface Salisbury screen wave-absorbing structure |
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Effective date of registration: 20210806 Address after: 2 / F, software building, No.9, Gaoxin Zhongyi Road, Nanshan District, Shenzhen City, Guangdong Province Applicant after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 518000 Guangdong, Shenzhen, Futian District, Shennan Road and colored field road intersection C East Block New World Plaza 2007-27 Applicant before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |
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Application publication date: 20170613 |