CN106811175B - A kind of aqueous solution sound stage width band absorbing meta-material and preparation method thereof - Google Patents
A kind of aqueous solution sound stage width band absorbing meta-material and preparation method thereof Download PDFInfo
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- CN106811175B CN106811175B CN201710019862.2A CN201710019862A CN106811175B CN 106811175 B CN106811175 B CN 106811175B CN 201710019862 A CN201710019862 A CN 201710019862A CN 106811175 B CN106811175 B CN 106811175B
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Abstract
The invention discloses a kind of aqueous solution sound stage width band absorbing meta-materials, it is related to electromagnetic functional material technical field, Meta Materials include the conductive reflective being cascading from the bottom to top, dielectric base body layer and periodic array layer, dielectric base body layer is made of the deionized water injected in composite material frame and composite material frame, composite material frame with a thickness of 0.8-3.5mm, the injection depth of deionized water is 0.5-1.5mm, deionized water is in contact with the upper surface of conductive reflective, periodic array layer is set on the top surface of composite material frame, periodic array layer is made of metal patch array arrangement.Aqueous solution sound stage width utilizes Dispersion of the aqueous solution in microwave frequency band with absorbing meta-material in the present invention, and under the premise of not increasing thickness, it is wide can significantly to expand suction wavestrip; structure is relatively easy, and mature preparation process, raw material are easily obtained; it is at low cost, it is easy to large-scale production and application.
Description
Technical field
The present invention relates to electromagnetic functional material technical fields, more particularly relate to a kind of aqueous solution sound stage width band absorbing meta-material
And preparation method thereof.
Background technique
The broadband performance of electromagnetic-wave absorbent is always one of research emphasis of related fields.The frequency dispersion of material electromagnetic parameter
Characteristic is to influence to inhale the wide key factor of wavestrip, is regrettably difficult to find that the material for fully meeting frequency dispersion and requiring in nature at present
Material system, therefore multilayered structure is the current common method for realizing broadband absorbing material.But multilayered structure often lead to it is larger
Thickness, greatly limit the application in engineering.
Electromagnetism Meta Materials are the composite constructions being made of artificial sub-wavelength structure unit, with flexible modulation electromagnetic property
Characteristic has important application value in electromagnetic wave absorption field.For Meta Materials, inhale wavestrip it is wide still with the frequency dispersion of its basis material
It is closely related, but compared with traditional material, Meta Materials broadband inhales requirement of the wave to composition material Dispersion and decreases, and
With controllability.Have the magnetic material of Dispersion as the matrix of absorbing meta-material in microwave frequency band, can obtain
Broadband absorbing property.However, the density of magnetic material is larger, it is difficult to meet certain engineer application requirements.Simultaneously as magnetic material
Material is usually prepared by specific technique, higher cost.In addition, also can get broadband absorbing meta-material by multilayered structure, still
Preparation process is complicated, and bandwidth still relative narrower.Therefore, structure is simple, preparation is convenient, broadband absorbing meta-material one at low cost
It is directly one of the research emphasis of related fields.
Summary of the invention
The present invention provides a kind of aqueous solution sound stage width band absorbing meta-material, adaptable, at low cost, working band is wide, and makes
Standby simple process, raw material are easy to get, preparation cost is low, can be also used for the infrared multi-Functional Camouflage technology of radar.
Specifically, aqueous solution sound stage width band absorbing meta-material, including be cascading from the bottom to top conductive reflective, electricity
Dielectric matrix layer and periodic array layer, dielectric base body layer by going of being injected in composite material frame and composite material frame from
Sub- water is constituted, and the height of composite material frame is 0.8-3.5mm, and the injection depth of deionized water is 0.5-1.5mm, deionized water
It is in contact with the upper surface of conductive reflective, periodic array layer is set on the top surface of composite material frame, and periodic array layer is by gold
Belong to patch array arrangement composition.
Preferably, conductive reflective is made of conductive metal or carbon fibre composite.
Preferably, conductive reflective is made of any one in copper, aluminium, silver, gold or carbon fibre composite.
Preferably, the dielectric constant for being used to prepare the composite material of the composite material frame is 2-5, and dielectric loss angle is
0-0.1。
Preferably, composite material frame is by appointing in glass fibre, quartz fibre, alumina fibre enhanced type composite material
One kind of anticipating is made.
Preferably, the size of the periodic unit of periodic array layer is 10-20mm.
Preferably, the area ratio of metal patch and periodic unit is 0.2-0.4.
Preferably, metal patch is made of copper, aluminium, gold or silver in conjunction with conductive silver paste.
A kind of preparation method of the aqueous solution sound stage width with absorbing meta-material, includes the following steps：
S1, composite material frame is prepared using composite material according to the size precalculated；
S2, metal patch is fixed on to formation period battle array on the top surface of composite material frame according to periodic unit array arrangement
Column layer；
S3, deionized water is poured into composite material frame, and conductive reflective is bonded in and is fixed with periodic array layer
Composite material frame bottom, be made aqueous solution sound stage width band absorbing meta-material.
Preferably, in step S2, using printing circuit board technology or silk-screen printing technique composite material frame (1) top
Metal patch array is fixed on face.
The invention has the advantages that：
The present invention obtains a kind of broadband absorbing meta-material by introducing aqueous solution as basis material.The suction wave is super
Dispersion of the material use aqueous solution in microwave frequency band, under the premise of not increasing thickness, can significantly expand inhale wavestrip it is wide,
Solve the problems, such as existing absorbing meta-material narrow bandwidth.In addition, since aqueous solution matrix has active cooling function,
The present invention can also be used in the infrared multi-Functional Camouflage technology of radar.
Aqueous solution sound stage width band absorbing meta-material structure of the invention is relatively easy, and mature preparation process, raw material are easy to obtain
, it is at low cost, it is easy to large-scale production and application.Meanwhile it can also be made using aqueous solution sound stage width band absorbing meta-material of the invention
Standby large-scale and complex special-shaped structural part has biggish application potential in engineering field.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the aqueous solution sound stage width band absorbing meta-material the schematic diagram of the section structure that the embodiment of the present invention 1 provides；
Periodic array layer partial schematic diagram in the aqueous solution sound stage width band absorbing meta-material that Fig. 2 provides for the embodiment of the present invention 1；
Fig. 3 is the aqueous solution sound stage width band absorbing meta-material sample object figure that the embodiment of the present invention 1 provides；
Fig. 4 is absorbance curves figure of the aqueous solution sound stage width with absorbing meta-material that the embodiment of the present invention 1 provides；
Fig. 5 is the infrared local thermal map of aqueous solution sound stage width band absorbing meta-material that the embodiment of the present invention 1 provides；
Fig. 6 is absorbance curves figure of the aqueous solution sound stage width with absorbing meta-material that the embodiment of the present invention 2 provides.
Description of symbols：
1- composite material frame, 2- deionized water, 3- conductive reflective, 4- periodic array layer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
In conjunction with shown in Fig. 1-Fig. 5, the embodiment of the present invention 1 provides a kind of aqueous solution sound stage width band absorbing meta-material, including under
The supreme conductive reflective 3 being cascading, dielectric base body layer and periodic array layer 4, dielectric base body layer is by composite wood
The deionized water 2 injected in material frame 1 and composite material frame 1 is constituted, and the thickness d 1 of composite material frame 1 is 2.5mm, is gone
The injection depth d2 of ionized water 2 is 1.0mm, and deionized water 2 is in contact with the upper surface of conductive reflective 3, composite material frame 1
Top surface on periodic array layer 4 is set, periodic array layer 4 is made of metal patch array arrangement.
Specifically, conductive reflective 3 is made of aluminium sheet, composite material frame 1 is compound by glass fiber reinforced epoxy resin
Material is made, and the dielectric constant of glass fiber reinforced epoxy resin composite material is 4.3, and glass fiber reinforced epoxy resin is compound
The dielectric loss angle of material is 0.025.
Specifically, periodic array layer 4 is made of square copper metal patch array arrangement, the period of periodic array layer 4 is single
The size of first p is 14.8mm；The side length a of copper metal patch is 5mm, with a thickness of 0.017mm.
Preparation method of the aqueous solution sound stage width with absorbing meta-material, which is characterized in that include the following steps：
S1, it is that 2.5mm glass fiber reinforced epoxy resin composite material prepares composite material frame 1 using thickness d 1, obtains
To the composite material frame 1 that height d2 is 1.0mm for deionized water to be perfused；
S2, use printing circuit board technique or silk-screen printing technique fixed on the top surface of composite material frame 1 side length a for
5mm is that 14.8mm array arrangement forms periodic array layer according to periodic unit p with a thickness of 0.017mm square copper metal patch
4；
S3, deionized water is poured into composite material frame 1, and conductive reflective 3 made of aluminium sheet is bonded in fixation
There is the bottom of the composite material frame 1 of periodic array layer 4 to get aqueous solution sound stage width band absorbing meta-material.
The aqueous solution sound stage width prepared in the present embodiment 1 band absorbing meta-material is detected, as shown in figure 4,6.5~
Absorptivity within the scope of 18.7GHz is greater than 80%, has excellent electromagnetic wave absorption performance.
Above-mentioned aqueous solution sound stage width band absorbing meta-material sample 5 and comparison metal copper plate 6 are placed in baking oven simultaneously, and will
The temperature inside the box is heated to 100 DEG C, shown in infrared local thermal map as shown in Figure 5, brightness of the aqueous solution sound stage width with absorbing meta-material
Far below the brightness of metal copper plate, therefore, aqueous solution sound stage width band absorbing meta-material obviously has apparent infrared stealth ability.
Embodiment 2
The embodiment of the present invention 2 provides a kind of aqueous solution sound stage width band absorbing meta-material, including is cascading from the bottom to top
Conductive reflective 3, dielectric base body layer and periodic array layer 4, dielectric base body layer is by composite material frame 1 and composite wood
The deionized water 2 injected in material frame 1 is constituted, and the thickness d 1 of composite material frame 1 is 2.8mm, the injection depth of deionized water 2
D2 is 1.2mm, and deionized water 2 is in contact with the upper surface of conductive reflective 3, and the period is arranged on the top surface of composite material frame 1
Array layer 4, periodic array layer 4 are made of metal patch array arrangement.
Specifically, conductive reflective 3 is made of carbon fibre composite, composite material frame 1 is enhanced poly- by quartz fibre
Acid imide composite material is made, and the dielectric constant that quartz fibre enhances composite polyimide material is 2.7, and quartz fibre enhancing is poly-
The dielectric loss angle of acid imide composite material is 0.01.
Specifically, periodic array layer 4 is made of square copper metal patch array arrangement, the period of periodic array layer 4 is single
The size of first p is 15.6mm；The side length a of copper metal patch is 5.3mm, with a thickness of 0.017mm.
Preparation method of the aqueous solution sound stage width with absorbing meta-material, which is characterized in that include the following steps：
S1, it is that 2.8mm glass fiber reinforced epoxy resin composite material prepares composite material frame 1 using thickness d 1, obtains
To the composite material frame 1 that height d2 is 1.2mm for deionized water to be perfused；
S2, use printing circuit board technique that side length a is set on the top surface of composite material frame 1 for 5.3mm, with a thickness of
0.017mm square conductive silver paste patch periodic array layer 4, periodic unit p are 15.6mm；
S3, deionized water is poured into composite material frame 1, and conductive reflective 3 made of aluminium sheet is bonded in fixation
There is the bottom of the composite material frame 1 of periodic array layer 4 to get aqueous solution sound stage width band absorbing meta-material.
The aqueous solution sound stage width prepared in the present embodiment 2 band absorbing meta-material is detected, as shown in fig. 6,6.5~
18.7GHz the absorptivity in range is greater than 80%, there is excellent electromagnetic wave absorption performance.
Embodiment 3
The embodiment of the present invention 3 provides a kind of aqueous solution sound stage width band absorbing meta-material, including is cascading from the bottom to top
Conductive reflective 3, dielectric base body layer and periodic array layer 4, dielectric base body layer is by composite material frame 1 and composite wood
The deionized water 2 injected in material frame 1 is constituted, and the thickness d 1 of composite material frame 1 is 0.8mm, the injection depth of deionized water 2
D2 is 0.5mm, and deionized water 2 is in contact with the upper surface of conductive reflective 3, and the period is arranged on the top surface of composite material frame 1
Array layer 4, periodic array layer 4 are made of metal patch array arrangement.
Specifically, conductive reflective 3 is made of aluminium sheet, composite material frame 1 is by alumina fibre enhanced type composite material
It is made, the dielectric constant of alumina fibre enhanced type composite material is 2, the dielectric loss of alumina fibre enhanced type composite material
Angle is 0.
Specifically, periodic array layer 4 is made of square copper metal patch array arrangement, the period of periodic array layer 4 is single
The size of first p is 10mm；The side length a of copper metal patch is 4.5mm, with a thickness of 0.017mm.
Preparation method of the aqueous solution sound stage width with absorbing meta-material, which is characterized in that include the following steps：
S1, it is that 0.8mm glass fiber reinforced epoxy resin composite material prepares composite material frame 1 using thickness d 1, obtains
To the composite material frame 1 that height d2 is 0.5mm for deionized water to be perfused；
S2, use printing circuit board technique or silk-screen printing technique by side length a for 4.5mm, with a thickness of 0.017mm square
Copper metal patch, which is fixed on the top surface of composite material frame 1 according to periodic unit p for 10mm array arrangement, forms periodic array
Layer 4；
S3, deionized water is poured into composite material frame 1, and conductive reflective 3 made of aluminium sheet is bonded in fixation
There is the bottom of the composite material frame 1 of periodic array layer 4 to get aqueous solution sound stage width band absorbing meta-material.
Embodiment 4
The embodiment of the present invention 4 provides a kind of aqueous solution sound stage width band absorbing meta-material, including is cascading from the bottom to top
Conductive reflective 3, dielectric base body layer and periodic array layer 4, dielectric base body layer is by composite material frame 1 and composite wood
The deionized water 2 injected in material frame 1 is constituted, and the thickness d 1 of composite material frame 1 is 3.5mm, the injection depth of deionized water 2
D2 is 1.5mm, and deionized water 2 is in contact with the upper surface of conductive reflective 3, and the period is arranged on the top surface of composite material frame 1
Array layer 4, periodic array layer 4 are made of metal patch array arrangement.
Specifically, conductive reflective 3 is made of aluminium sheet, composite material frame 1 is by glass-fiber reinforced composite material system
At the dielectric constant of glass-fiber reinforced composite material is 5, and the dielectric loss angle of glass-fiber reinforced composite material is
0.1。
Specifically, periodic array layer 4 is made of square copper metal patch array arrangement, the period of periodic array layer 4 is single
The size of first p is 20mm；The side length a of copper metal patch is 12.6mm, with a thickness of 0.017mm.
Preparation method of the aqueous solution sound stage width with absorbing meta-material, which is characterized in that include the following steps：
S1, it is that 3.5mm glass fiber reinforced epoxy resin composite material prepares composite material frame 1 using thickness d 1, obtains
To the composite material frame 1 that height d2 is 1.5mm for deionized water to be perfused；
S2, use printing circuit board technique or silk-screen printing technique by side length a for 12.6mm, with a thickness of 0.017mm pros
Shape copper metal patch is that 20mm array arrangement is fixed on formation period battle array on the top surface of composite material frame 1 according to periodic unit p
Column layer 4；
S3, deionized water is poured into composite material frame 1, and conductive reflective 3 made of aluminium sheet is bonded in fixation
There is the bottom of the composite material frame 1 of periodic array layer 4 to get aqueous solution sound stage width band absorbing meta-material.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (9)
1. a kind of aqueous solution sound stage width band absorbing meta-material, which is characterized in that the conduction including being cascading from the bottom to top is anti-
Penetrate layer (3), dielectric base body layer and periodic array layer (4), the dielectric base body layer is by composite material frame (1) and compound
The deionized water (2) injected in material frame (1) is constituted, and the dielectric constant of the composite material of the composite material frame (1) is
2-5, dielectric loss angle 0-0.1, composite material frame (1) with a thickness of 0.8-3.5mm, the injection of the deionized water (2)
Depth is 0.5-1.5mm, and the deionized water (2) is in contact with the upper surface of the conductive reflective (3), the composite material
The periodic array layer (4) is set on the top surface of frame (1), and the periodic array layer (4) is made of metal patch array arrangement.
2. aqueous solution sound stage width band absorbing meta-material according to claim 1, which is characterized in that the conductive reflective (3)
It is made of conductive metal or carbon fibre composite.
3. aqueous solution sound stage width band absorbing meta-material according to claim 2, which is characterized in that the conductive reflective (3)
It is made of any one in copper, aluminium, silver, gold or fibrous composite.
4. aqueous solution sound stage width band absorbing meta-material according to claim 1, which is characterized in that the composite material frame
(1) it is made of any one in glass fibre, quartz fibre, alumina fibre enhanced type composite material.
5. aqueous solution sound stage width band absorbing meta-material according to claim 1, which is characterized in that the periodic array layer (4)
Periodic unit size be 10-20mm.
6. aqueous solution sound stage width according to claim 5 band absorbing meta-material, which is characterized in that the metal patch with it is described
The area ratio of periodic unit is 0.2-0.4.
7. aqueous solution sound stage width according to claim 1 band absorbing meta-material, which is characterized in that the metal patch by copper,
Aluminium, gold or silver are made in conjunction with conductive silver paste.
8. a kind of such as described in any item preparation methods of the aqueous solution sound stage width with absorbing meta-material of claim 1-7, feature exist
In including the following steps：
S1, composite material frame (1) is prepared using composite material according to the size precalculated；
S2, metal patch is fixed on to formation period battle array on the top surface of composite material frame (1) according to periodic unit array arrangement
Column layer (4)；
S3, deionized water (2) are poured into in composite material frame (1), and conductive reflective (3) is bonded in and is fixed with period battle array
Aqueous solution sound stage width band absorbing meta-material is made in the bottom of the composite material frame (1) of column layer (4).
9. preparation method of the aqueous solution sound stage width with absorbing meta-material according to claim 8, which is characterized in that step S2
In, metal patch array is fixed on the top surface of composite material frame (1) using printing circuit board technology or silk-screen printing technique.
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| CN108346860B (en) * | 2018-03-01 | 2020-11-13 | 中国人民解放军空军工程大学 | Light-permeable structural broadband wave-absorbing material with water as loss medium |
| CN114619718A (en) * | 2020-12-10 | 2022-06-14 | 南京航空航天大学 | Broadband wave-absorbing composite material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709708A (en) * | 2012-06-28 | 2012-10-03 | 中国人民解放军国防科学技术大学 | Electromagnetic wave absorbing material with periodic structure, and preparation method thereof |
| CN102732210A (en) * | 2012-06-28 | 2012-10-17 | 中国人民解放军国防科学技术大学 | Electromagnetic-wave absorption-material having periodic structure, and preparation method thereof |
| CN103158299A (en) * | 2013-03-12 | 2013-06-19 | 中国人民解放军国防科学技术大学 | Radar-infrared combined stealth material and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709708A (en) * | 2012-06-28 | 2012-10-03 | 中国人民解放军国防科学技术大学 | Electromagnetic wave absorbing material with periodic structure, and preparation method thereof |
| CN102732210A (en) * | 2012-06-28 | 2012-10-17 | 中国人民解放军国防科学技术大学 | Electromagnetic-wave absorption-material having periodic structure, and preparation method thereof |
| CN103158299A (en) * | 2013-03-12 | 2013-06-19 | 中国人民解放军国防科学技术大学 | Radar-infrared combined stealth material and preparation method thereof |
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