CN102821589A - Wave absorbing material - Google Patents
Wave absorbing material Download PDFInfo
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- CN102821589A CN102821589A CN2012102754184A CN201210275418A CN102821589A CN 102821589 A CN102821589 A CN 102821589A CN 2012102754184 A CN2012102754184 A CN 2012102754184A CN 201210275418 A CN201210275418 A CN 201210275418A CN 102821589 A CN102821589 A CN 102821589A
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Abstract
The invention relates to a wave absorbing material comprising at least one material sheet layer; each material sheet layer comprises three layers of substrates; the substrates are respectively a first substrate, a second substrate and a third substrate from the upper side to the lower side; each layer of substrate comprises at least one substrate unit; a metal microstructure is attached on the upper surface of each substrate unit; the metal microstructure attached on the upper surface of the substrate unit of the first substrate is composed of a plurality of hollow-ring-shaped structures in nonidentical sizes, wherein the hollow-ring-shaped structures in the same size are arranged like a round array; the metal microstructures attached on the upper surface of the substrate unit of the second substrate is split-ring-shaped structures, wherein both ends of the a split ring respectively rotate inwards to form two mutually-disjointed spiral structures; and the metal microstructures attached on the upper surface of the substrate unit of the third substrate and the metal microstructures attached on the substrate unit of the second substrate are complementary. The wave absorbing material with the structure has better wave absorbing property at a low-frequency stage.
Description
Technical field
The present invention relates to a kind of novel artificial electromagnetic material, more particularly, relate to a kind of absorbing material that has better absorbing property in low-frequency range.
Background technology
Along with development of modern science and technology, electromagenetic wave radiation increases the influence of environment day by day.On the airport, airplane flight can't take off overdue because of Electromagnetic Interference; In hospital, mobile phone regular meeting disturbs the operate as normal of various electronic instrument for diagnosing and curing diseases devices.Therefore, administer electromagnetic pollution, seek a kind of material---the absorbing material that can keep out and weaken electromagenetic wave radiation, become a big problem of material science.
Absorbing material is meant and can effectively be absorbed into the one type of material of electromagnetic wave energy that is mapped to its surface, and incident electromagnetic wave is changed into heat energy to its various loss mechanism through material or other form of energy reaches the purpose of inhaling ripple.Absorbing material has structural type and application type, and the former mainly is wedge shape, foam shape, plate shaped etc., and the latter is composited by binding agent, absorbent, and the ability of inhaling ripple is main relevant with the absorbent kind.
Artificial electromagnetic material is a kind of can the novel artificial synthetic material of electromagnetic wave generation response the composition by substrate with attached to the artificial micro-structural on the substrate.Because the structure that artificial micro-structural normally is arranged into by electric conducting material with certain geometrical pattern; Therefore can produce response to electromagnetic wave; Thereby make ultra material monolithic embody the electromagnetic property that is different from substrate; For example DIELECTRIC CONSTANTS is different with magnetic permeability μ;
can know according to the refractive index formula, and refractive index n is also different.Artificial electromagnetic material becomes the new direction of absorbing material research.Through designing special artificial micro-structural, can obtain and can inhale the material of ripple by wideband, and change the size and dimension of artificial micro-structural, just can change it and inhale the ripple frequency range.
Summary of the invention
The technical problem that the present invention will solve is, designs a kind of absorbing material, and this absorbing material is the artificial electromagnetic material that has better absorbing property in low-frequency range.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of absorbing material; Comprise at least one sheet of material; Each said sheet of material comprises three laminar substrates; Said substrate from top to bottom is respectively first substrate, second substrate and the 3rd substrate, and every laminar substrate comprises at least one base board unit, and the upper surface of each base board unit is attached with metal micro structure; The metal micro structure that adheres at the upper surface of the base board unit of said first substrate is the complete identical a plurality of hollow loop configuration of size, the wherein measure-alike rounded array arrangement of hollow loop configuration; The metal micro structure that adheres at the upper surface of the base board unit of said second substrate is that the two ends of open annular structure and split ring are inwardly curled up respectively and formed two helical structures, and said helical structure mutually disjoints; The metal micro structure that on the base board unit of metal micro structure that the upper surface of the base board unit of said the 3rd substrate adheres to and said second substrate, adheres to is complementary.
In preferred implementation of the present invention, a plurality of hollow loop configuration on the base board unit of said first substrate by the centre to around its size become greatly or gradually gradually and diminish.
In preferred implementation of the present invention, said hollow loop configuration is a circular rings.
In preferred implementation of the present invention, said hollow loop configuration is the polygon ring.
In preferred implementation of the present invention, the opening direction of the split ring of the metal micro structure on the adjacent base board unit of said second substrate is vertical each other.
In preferred implementation of the present invention, said split ring is the rectangular aperture ring, and it is the helical structure at right angle that the inward at both ends helically wound of said split ring becomes bending angle.
In preferred implementation of the present invention, said split ring is the circular open ring, and the inward at both ends of said split ring is curled up rounded helical structure; Perhaps said split ring is the elliptical openings ring, and the inward at both ends of said split ring is curled up the ovalize helical structure.
In preferred implementation of the present invention, said artificial micro-structural is processed by electric conducting material.
In preferred implementation of the present invention, said substrate is ceramic material, FR-4, F4B, polymer matrix composites, ferroelectric material, ferrite material, ferromagnetic material or epoxy glass cloth laminated board.
In preferred implementation of the present invention, said artificial micro-structural is processed by silver, copper, ITO, graphite or CNT; Said artificial micro-structural through etching, plating, brill quarter, photoetching, electronics is carved or ion is carved and is attached on the said substrate.
Embodiment of the present invention has following beneficial effect: the absorbing material with said structure has microwave absorbing property preferably in low-frequency range.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the front view of the absorbing material among the embodiment;
Fig. 2 is the sketch map that the upper surface of first substrate among Fig. 1 adheres to artificial micro-structural;
Fig. 3 is the sketch map that the upper surface of second substrate among Fig. 1 adheres to artificial micro-structural;
Fig. 4 is the sketch map that the upper surface of the 3rd substrate among Fig. 1 adheres to artificial micro-structural;
Fig. 5 is its S of absorbing material among Fig. 1
11The characteristic Simulation sketch map.
Embodiment
Present embodiment provides a kind of absorbing material; As shown in Figure 1; Comprise an artificial electromagnetic material lamella; Can certainly comprise a plurality of artificial electromagnetic material lamellas, when having a plurality of artificial electromagnetic material lamella, adjacent artificial electromagnetic material lamella is along can be through mechanical connection, welding perpendicular to the direction of its upper and lower surfaces or between adjacent artificial electromagnetic material lamella, fill the material that can connect the two both modes such as bonding are assembled into one.Artificial electromagnetic material lamella shown in Fig. 1 comprises three laminar substrates; Three laminar substrates are respectively first substrate 1, second substrate 2 and the 3rd substrate 3 from top to bottom; Be attached with artificial micro-structural on every laminar substrate; Shown among Fig. 14,5 and 6, adjacent substrate is an one through adhesive bond, can certainly be assembled into one through modes such as mechanical connection or welding.Every laminar substrate is divided at least one base board unit virtually, and the upper surface of each base board unit is attached with metal micro structure.The metal surface that sheet metal 7 equivalence of the 3rd substrate 3 lower surfaces is adhered to during for the absorbing material practical application, for example the airplane skin surface adhered to of absorbing material, tub surface etc.; If the apparatus surface of absorbing material application is the non-metal shell surface certainly, then can directly adheres to the layer of metal layer and get final product at absorbing material the 3rd substrate 3 lower surfaces.
As shown in Figure 2, first substrate 1 comprises 1 base board unit, and the upper surface of this base board unit adheres to the incomplete identical hollow circular becket of a plurality of sizes, and cavity ring is not limited to hollow circular rings here, also can be hollow polygon ring.Hollow circular rings among Fig. 2 from the centre of base board unit to around radius reduce gradually; Certain hollow circular rings radius around phase in the middle of the base board unit also can be to increase gradually.Because open circles annular size so the refractive index on first base board unit also reduces from middle mutually gradually, can realize electromagnetic deflection to reducing gradually by base board unit is middle all around all around, helps reducing electromagnetic reflection.
Be divided into four base board units on second substrate 2 shown in Figure 3 virtually, adhere to an artificial micro-structural on each base board unit, this micro-structural is the rectangular aperture ring, and the inward at both ends helically wound of rectangular aperture ring to become bending angle be the helical structure at right angle; The opening direction of the split ring of the micro-structural on the adjacent substrate unit is vertical each other; Certainly split ring also can be the circular open ring, and the inward at both ends of split ring is curled up rounded helical structure; Split ring also can be the elliptical openings ring, and the inward at both ends of split ring is curled up the ovalize helical structure.
The metal micro structure shape complementarity that adheres on the metal micro structure shape of adhering on the 3rd substrate 3 as shown in Figure 4 and second substrate 2, promptly the upper surface of the place of the upper surface adhesion metal micro-structural of second substrate 2 non-cohesive metal micro structure, second substrate 2 on the corresponding position of the upper surface of the 3rd substrate 3 does not have the place of adhesion metal micro-structural to enclose metal micro structure in the corresponding place of the upper surface of the 3rd substrate 3
Metal micro structure is processed by copper cash, can certainly for other electric conducting material such as silver, ITO, graphite or CNT etc.Artificial micro-structural is through on the substrate of etched mode attached to correspondence, and can certainly adopt plating, bore quarter, on the substrate of mode attached to correspondence such as photoetching, ion quarter,
The material of substrate is selected epoxy glass cloth laminated board for use, can certainly be ceramic material, FR-4, F4B, polymer matrix composites, ferroelectric material, ferrite material or ferromagnetic material etc.
Fig. 5 is its S of absorbing material with said structure
11The characteristic Simulation sketch map can be known by Fig. 5, in 3GHz ~ 6.4GHz frequency range, and S
11Less than-6dB; This absorbing material has absorbing property preferably in above-mentioned low-frequency range.
Can further adjust the suction ripple frequency range of absorbing material through the number of plies that changes substrate in the medium substrate, the shape and size of artificial micro-structural, make it satisfy the demand of special frequency microwave absorbing property.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention is not limited to above-mentioned embodiment; Above-mentioned embodiment only is schematically, rather than restrictive, and those of ordinary skill in the art is under enlightenment of the present invention; Also can make a lot of distortion not breaking away under the scope situation that aim of the present invention and claim protect, these all belong within the protection of the present invention.
Claims (10)
1. absorbing material; It is characterized in that: comprise at least one sheet of material; Each said sheet of material comprises three laminar substrates; Said substrate from top to bottom is respectively first substrate, second substrate and the 3rd substrate, and every laminar substrate comprises at least one base board unit, and the upper surface of each base board unit is attached with metal micro structure; The metal micro structure that adheres at the upper surface of the base board unit of said first substrate is the complete identical a plurality of hollow loop configuration of size, the wherein measure-alike rounded array arrangement of hollow loop configuration; The metal micro structure that adheres at the upper surface of the base board unit of said second substrate is that the two ends of open annular structure and split ring are inwardly curled up respectively and formed two helical structures, and said helical structure mutually disjoints; The metal micro structure that on the base board unit of metal micro structure that the upper surface of the base board unit of said the 3rd substrate adheres to and said second substrate, adheres to is complementary.
2. absorbing material according to claim 1 is characterized in that, a plurality of hollow loop configuration on the base board unit of said first substrate by the centre to around its size become greatly or gradually gradually and diminish.
3. absorbing material according to claim 2 is characterized in that, said hollow loop configuration is a circular rings.
4. absorbing material according to claim 2 is characterized in that, said hollow loop configuration is the polygon ring.
5. absorbing material according to claim 1 is characterized in that, the opening direction of the split ring of the metal micro structure on the adjacent base board unit of said second substrate is vertical each other.
6. absorbing material according to claim 5 is characterized in that, said split ring is the rectangular aperture ring, and it is the helical structure at right angle that the inward at both ends helically wound of said split ring becomes bending angle.
7. absorbing material according to claim 5 is characterized in that, said split ring is the circular open ring, and the inward at both ends of said split ring is curled up rounded helical structure; Perhaps said split ring is the elliptical openings ring, and the inward at both ends of said split ring is curled up the ovalize helical structure.
8. according to the arbitrary described absorbing material of claim 1 to 7, it is characterized in that said artificial micro-structural is processed by electric conducting material.
9. according to the arbitrary described absorbing material of claim 1 to 7, it is characterized in that said substrate is ceramic material, FR-4, F4B, polymer matrix composites, ferroelectric material, ferrite material, ferromagnetic material or epoxy glass cloth laminated board.
10. according to the arbitrary described absorbing material of claim 1 to 7, it is characterized in that said artificial micro-structural is processed by silver, copper, ITO, graphite or CNT; Said artificial micro-structural through etching, plating, brill quarter, photoetching, electronics is carved or ion is carved and is attached on the said substrate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210275418.4A CN102821589B (en) | 2012-08-03 | 2012-08-03 | Wave absorbing material |
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| CN201210275418.4A CN102821589B (en) | 2012-08-03 | 2012-08-03 | Wave absorbing material |
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| CN102821589B CN102821589B (en) | 2015-07-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715513A (en) * | 2014-01-17 | 2014-04-09 | 中国科学院光电技术研究所 | Broadband wave-absorbing material based on sub-wavelength metal structures |
| CN104347949A (en) * | 2013-07-24 | 2015-02-11 | 深圳光启创新技术有限公司 | Super material |
| CN107105609A (en) * | 2017-05-25 | 2017-08-29 | 上海为然环保科技有限公司 | A kind of composite wave-suction material of movable composition based on graphene |
| CN110376666A (en) * | 2019-07-25 | 2019-10-25 | 江西师范大学 | A kind of ultra wide band perfection absorber of middle infrared band and preparation method thereof |
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| CN102480030A (en) * | 2011-07-26 | 2012-05-30 | 深圳光启高等理工研究院 | Feed-forward type microwave antenna |
| CN102593595A (en) * | 2012-02-29 | 2012-07-18 | 深圳光启创新技术有限公司 | Negative magnetic permeability metamaterial |
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| CN101699659A (en) * | 2009-11-04 | 2010-04-28 | 东南大学 | Lens antenna |
| CN102109685A (en) * | 2009-12-29 | 2011-06-29 | 中国科学院物理研究所 | Multilayer electromagnetism modulating structure and preparation method thereof |
| CN102480024A (en) * | 2011-07-26 | 2012-05-30 | 深圳光启高等理工研究院 | Feed-backward type radar antenna |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104347949A (en) * | 2013-07-24 | 2015-02-11 | 深圳光启创新技术有限公司 | Super material |
| CN103715513A (en) * | 2014-01-17 | 2014-04-09 | 中国科学院光电技术研究所 | Broadband wave-absorbing material based on sub-wavelength metal structures |
| CN103715513B (en) * | 2014-01-17 | 2016-03-30 | 中国科学院光电技术研究所 | A kind of wideband wave absorbing material based on second wavelength metallic structure |
| CN107105609A (en) * | 2017-05-25 | 2017-08-29 | 上海为然环保科技有限公司 | A kind of composite wave-suction material of movable composition based on graphene |
| CN107105609B (en) * | 2017-05-25 | 2019-09-13 | 河北君业科技股份有限公司 | A kind of composite wave-suction material of the movable composition based on graphene |
| CN110376666A (en) * | 2019-07-25 | 2019-10-25 | 江西师范大学 | A kind of ultra wide band perfection absorber of middle infrared band and preparation method thereof |
| CN110376666B (en) * | 2019-07-25 | 2022-07-26 | 江西师范大学 | Ultra-wideband perfect absorber of mid-infrared band and preparation method thereof |
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| CN102821589B (en) | 2015-07-01 |
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Effective date of registration: 20210407 Address after: 2 / F, software building, No.9, Gaoxin Zhongyi Road, Nanshan District, Shenzhen City, Guangdong Province Patentee after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 18B, building a, CIC international business center, 1061 Xiangmei Road, Futian District, Shenzhen, Guangdong 518034 Patentee before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |