CN106811175A - 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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- CN106811175A CN106811175A CN201710019862.2A CN201710019862A CN106811175A CN 106811175 A CN106811175 A CN 106811175A CN 201710019862 A CN201710019862 A CN 201710019862A CN 106811175 A CN106811175 A CN 106811175A
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Abstract
The invention discloses a kind of aqueous solution sound stage width band absorbing meta-material, 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 up of the deionized water injected in composite frame and composite frame, the thickness of composite frame is 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 frame, periodic array layer is made up 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, on the premise of thickness is not increased, can significantly expand suction wavestrip wide; structure is relatively easy, and mature preparation process, raw material are easily obtained; low cost, it is easy to large-scale production and application.
Description
Technical field
The present invention relates to electromagnetic functional material technical field, a kind of aqueous solution sound stage width band absorbing meta-material is more particularly related to
And preparation method thereof.
Background technology
The broadband performance of electromagnetic-wave absorbent is always one of research emphasis of association area.The frequency dispersion of material electromagnetic parameter
Characteristic is that wavestrip key factor wide is inhaled in influence, is regrettably difficult to find that in nature at present and fully meets the material that frequency dispersion is required
Material system, therefore sandwich construction is the common method for realizing broadband absorbing material at present.But sandwich construction often leads to larger
Thickness, greatly limit the application in engineering.
Electromagnetism Meta Materials are the composite constructions being made up 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 matrix material
It is closely related, but compared with traditional material, and Meta Materials broadband is inhaled requirement of the ripple to composition material Dispersion and is decreased, and
With controllability.To there is 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 some engineer applied requirements.Simultaneously as magnetic material
Material is generally prepared by specific technique, relatively costly.In addition, broadband absorbing meta-material can also be obtained by sandwich construction, but
Preparation technology is complicated, and bandwidth still relative narrower.Therefore, simple structure, preparation convenience, the broadband absorbing meta-material one of low cost
It is directly one of research emphasis of association area.
The content of the invention
The present invention provides a kind of aqueous solution sound stage width band absorbing meta-material, and strong adaptability, low cost, working band are wide, and system
Standby process is simple, 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 conductive reflective, the electricity being cascading from the bottom to top
Dielectric matrix layer and periodic array layer, dielectric base body layer by composite frame and composite frame inject go from
Sub- water is constituted, and the height of composite 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 frame, periodic array layer is by gold
Category patch array arrangement composition.
Preferably, conductive reflective is made up of conducting metal or carbon fibre composite.
Preferably, conductive reflective is made up of any one in copper, aluminium, silver, gold or carbon fibre composite.
Preferably, it is 2-5 for preparing the dielectric constant of the composite of the composite frame, dielectric loss angle is
0-0.1。
Preferably, composite frame is by appointing in glass fibre, quartz fibre, alumina fibre enhanced type composite material
Meaning one kind is made.
Preferably, the size of the periodic unit of periodic array layer is 10-20mm.
Preferably, metal patch and the area ratio of periodic unit are 0.2-0.4.
Preferably, metal patch is made up of copper, aluminium, gold or silver with reference to conductive silver paste.
A kind of preparation method of the aqueous solution sound stage width with absorbing meta-material, comprises the following steps：
S1, prepare composite frame using composite according to the size for precalculating；
S2, by metal patch according to periodic unit array arrangement be fixed on the top surface of composite frame formed the cycle battle array
Row layer；
S3, to pouring into deionized water in composite frame, and conductive reflective be bonded in be fixed with periodic array layer
Composite frame bottom, aqueous solution sound stage width band absorbing meta-material is obtained.
Preferably, in step S2, using printing circuit board technology or silk-screen printing technique composite frame (1) top
Metal patch array is fixed on face.
The invention has the advantages that：
The present invention is used as matrix material by introducing the aqueous solution, obtains a kind of broadband absorbing meta-material.The suction ripple surpasses
Dispersion of the material use aqueous solution in microwave frequency band, on the premise of thickness is not increased, can significantly expand suction wavestrip it is wide,
Efficiently solve the problems, such as existing absorbing meta-material narrow bandwidth.Further, since aqueous solution matrix has active cooling function, therefore
The present invention can be additionally 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
, low cost, it is easy to large-scale production and application.Meanwhile, can also be made using aqueous solution sound stage width of the invention band absorbing meta-material
Standby large-scale, complicated special-shaped structural part, has larger application potential in engineering field.
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 to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the aqueous solution sound stage width band absorbing meta-material cross-sectional view that the embodiment of the present invention 1 is provided；
Fig. 2 is periodic array layer partial schematic diagram in the aqueous solution sound stage width band absorbing meta-material that the embodiment of the present invention 1 is provided；
Fig. 3 is the aqueous solution sound stage width band absorbing meta-material sample object figure that the embodiment of the present invention 1 is provided；
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 is provided；
Fig. 5 is the aqueous solution sound stage width band infrared local thermal map of absorbing meta-material that the embodiment of the present invention 1 is provided；
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 is provided.
Description of reference numerals：
1- composite frames, 2- deionized waters, 3- conductive reflectives, 4- periodic arrays layer.
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 carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment 1
With reference to 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
Supreme conductive reflective 3, the dielectric base body layer and periodic array layer 4 being cascading, dielectric base body layer is by composite wood
The deionized water 2 injected in material frame 1 and composite frame 1 is constituted, and the thickness d 1 of composite 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 frame 1
Top surface on periodic array layer 4 is set, periodic array layer 4 is made up of metal patch array arrangement.
Specifically, conductive reflective 3 is made up of aluminium sheet, composite frame 1 is combined by glass fiber reinforced epoxy resin
Material is made, and the dielectric constant of glass fiber reinforced epoxy resin composite is 4.3, and glass fiber reinforced epoxy resin is combined
The dielectric loss angle of material is 0.025.
Specifically, periodic array layer 4 is made up of square copper metal patch array arrangement, the cycle list of periodic array layer 4
The size of first p is 14.8mm；The length of side a of copper metal paster is 5mm, and thickness is 0.017mm.
Preparation method of the aqueous solution sound stage width with absorbing meta-material, it is characterised in that comprise the following steps：
S1, using thickness d 1 for 2.5mm glass fiber reinforced epoxy resin composites prepare composite frame 1, obtain
To height d2 for the composite frame 1 of 1.0mm is used to irrigate deionized water；
S2, use printing circuit board technique or silk-screen printing technique fixed on the top surface of composite frame 1 length of side a for
5mm, thickness is 0.017mm square copper metal patches, is that 14.8mm array arrangements form periodic array layer according to periodic unit p
4；
S3, to pouring into deionized water in composite frame 1, and the conductive reflective 3 that aluminium sheet is made is bonded in fixation
There is the bottom of the composite frame 1 of periodic array layer 4, obtain final product aqueous solution sound stage width band absorbing meta-material.
The aqueous solution sound stage width band absorbing meta-material that will be prepared in the present embodiment 1 be detected, as shown in figure 4,6.5~
Absorptivity in the range of 18.7GHz is more than 80%, with excellent electromagnetic wave absorption performance.
Above-mentioned aqueous solution sound stage width band absorbing meta-material sample 5 is placed in baking oven simultaneously with contrast metal copper plate 6, 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 substantially has obvious 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 by composite frame 1 and composite wood
The deionized water 2 injected in material frame 1 is constituted, and the thickness d 1 of composite 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 cycle is set on the top surface of composite frame 1
Array layer 4, periodic array layer 4 is made up of metal patch array arrangement.
Specifically, conductive reflective 3 is made up of carbon fibre composite, composite frame 1 is poly- by quartz fibre enhancing
Acid imide composite is made, and the dielectric constant of quartz fibre enhancing composite polyimide material is 2.7, and quartz fibre enhancing is poly-
The dielectric loss angle of acid imide composite is 0.01.
Specifically, periodic array layer 4 is made up of square copper metal patch array arrangement, the cycle list of periodic array layer 4
The size of first p is 15.6mm；The length of side a of copper metal paster is 5.3mm, and thickness is 0.017mm.
Preparation method of the aqueous solution sound stage width with absorbing meta-material, it is characterised in that comprise the following steps：
S1, using thickness d 1 for 2.8mm glass fiber reinforced epoxy resin composites prepare composite frame 1, obtain
To height d2 for the composite frame 1 of 1.2mm is used to irrigate deionized water；
S2, to use printing circuit board technique that length of side a is set on the top surface of composite frame 1 be 5.3mm, and thickness is
0.017mm square conductive silver paste pasters periodic array layer 4, periodic unit p is 15.6mm；
S3, to pouring into deionized water in composite frame 1, and the conductive reflective 3 that aluminium sheet is made is bonded in fixation
There is the bottom of the composite frame 1 of periodic array layer 4, obtain final product aqueous solution sound stage width band absorbing meta-material.
The aqueous solution sound stage width band absorbing meta-material that will be prepared in the present embodiment 2 be detected, as shown in fig. 6,6.5~
Absorptivity in the range of 18.7GHz is more than 80%, with 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 by composite frame 1 and composite wood
The deionized water 2 injected in material frame 1 is constituted, and the thickness d 1 of composite 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 cycle is set on the top surface of composite frame 1
Array layer 4, periodic array layer 4 is made up of metal patch array arrangement.
Specifically, conductive reflective 3 is made up of aluminium sheet, composite 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 up of square copper metal patch array arrangement, the cycle list of periodic array layer 4
The size of first p is 10mm；The length of side a of copper metal paster is 4.5mm, and thickness is 0.017mm.
Preparation method of the aqueous solution sound stage width with absorbing meta-material, it is characterised in that comprise the following steps：
S1, using thickness d 1 for 0.8mm glass fiber reinforced epoxy resin composites prepare composite frame 1, obtain
To height d2 for the composite frame 1 of 0.5mm is used to irrigate deionized water；
S2, to use printing circuit board technique or silk-screen printing technique be 4.5mm by length of side a, and thickness is 0.017mm squares
Copper metal paster forms periodic array according to periodic unit p for 10mm array arrangements are fixed on the top surface of composite frame 1
Layer 4；
S3, to pouring into deionized water in composite frame 1, and the conductive reflective 3 that aluminium sheet is made is bonded in fixation
There is the bottom of the composite frame 1 of periodic array layer 4, obtain final product 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 by composite frame 1 and composite wood
The deionized water 2 injected in material frame 1 is constituted, and the thickness d 1 of composite 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 cycle is set on the top surface of composite frame 1
Array layer 4, periodic array layer 4 is made up of metal patch array arrangement.
Specifically, conductive reflective 3 is made up of aluminium sheet, composite frame 1 is by glass-fiber reinforced composite system
Into the dielectric constant of glass-fiber reinforced composite is 5, and the dielectric loss angle of glass-fiber reinforced composite is
0.1。
Specifically, periodic array layer 4 is made up of square copper metal patch array arrangement, the cycle list of periodic array layer 4
The size of first p is 20mm；The length of side a of copper metal paster is 12.6mm, and thickness is 0.017mm.
Preparation method of the aqueous solution sound stage width with absorbing meta-material, it is characterised in that comprise the following steps：
S1, using thickness d 1 for 3.5mm glass fiber reinforced epoxy resin composites prepare composite frame 1, obtain
To height d2 for the composite frame 1 of 1.5mm is used to irrigate deionized water；
S2, to use printing circuit board technique or silk-screen printing technique be 12.6mm by length of side a, and thickness is 0.017mm square
Shape copper metal paster forms cycle battle array according to periodic unit p for 20mm array arrangements are fixed on the top surface of composite frame 1
Row layer 4；
S3, to pouring into deionized water in composite frame 1, and the conductive reflective 3 that aluminium sheet is made is bonded in fixation
There is the bottom of the composite frame 1 of periodic array layer 4, obtain final product aqueous solution sound stage width band absorbing meta-material.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (10)
1. a kind of aqueous solution sound stage width is with absorbing meta-material, it is characterised in that the conduction including being cascading from the bottom to top is anti-
Layer (3), dielectric base body layer and periodic array layer (4) are penetrated, the dielectric base body layer is by composite frame (1) and is combined
The deionized water (2) of injection is constituted in material frame (1), and the thickness of the composite frame (1) is 0.8-3.5mm, described
The injection depth of deionized water (2) is 0.5-1.5mm, the upper surface phase of the deionized water (2) and the conductive reflective (3)
Contact, sets periodic array layer (4) on the top surface of the composite frame (1), periodic array layer (4) is by metal
Patch array arrangement composition.
2. aqueous solution sound stage width according to claim 1 is with absorbing meta-material, it is characterised in that the conductive reflective (3)
It is made up of conducting metal or carbon fibre composite.
3. aqueous solution sound stage width according to claim 2 is with absorbing meta-material, it is characterised in that the conductive reflective (3)
It is made up of any one in copper, aluminium, silver, gold or fibrous composite.
4. aqueous solution sound stage width according to claim 1 is with absorbing meta-material, it is characterised in that for preparing the composite wood
The dielectric constant of the composite of material frame (1) is 2-5, and dielectric loss angle is 0-0.1.
5. aqueous solution sound stage width according to claim 4 is with absorbing meta-material, it is characterised in that the composite frame
(1) it is made up of any one in glass fibre, quartz fibre, alumina fibre enhanced type composite material.
6. aqueous solution sound stage width according to claim 1 is with absorbing meta-material, it is characterised in that periodic array layer (4)
Periodic unit size be 10-20mm.
7. aqueous solution sound stage width according to claim 6 band absorbing meta-material, it is characterised in that the metal patch with it is described
The area ratio of periodic unit is 0.2-0.4.
8. aqueous solution sound stage width according to claim 1 band absorbing meta-material, it is characterised in that the metal patch by copper,
Aluminium, gold or silver are made with reference to conductive silver paste.
9. a kind of preparation method of the aqueous solution sound stage width with absorbing meta-material as described in any claim 1-8, it is characterised in that
Comprise the following steps：
S1, prepare composite frame (1) using composite according to the size for precalculating；
S2, by metal patch according to periodic unit array arrangement be fixed on the top surface of composite frame (1) formed the cycle battle array
Row layer (4)；
S3, to pouring into deionized water (2) in composite frame (1), and conductive reflective (3) be bonded in be fixed with cycle battle array
The bottom of the composite frame (1) of row layer (4), is obtained aqueous solution sound stage width band absorbing meta-material.
10. preparation method of the aqueous solution sound stage width with absorbing meta-material according to claim 9, it is characterised in that step S2
In, metal patch array is fixed on the top surface of composite frame (1) using printing circuit board technology or silk-screen printing technique.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346860A (en) * | 2018-03-01 | 2018-07-31 | 中国人民解放军空军工程大学 | - kind using water as the structural type broadband absorbing material of the light-permeable of lossy 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 |
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| 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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2017
- 2017-01-11 CN CN201710019862.2A patent/CN106811175B/en not_active Expired - Fee Related
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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346860A (en) * | 2018-03-01 | 2018-07-31 | 中国人民解放军空军工程大学 | - kind using water as the structural type broadband absorbing material of the light-permeable of lossy medium |
| 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 |
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