CN103296459B - The preparation method and Meta Materials of a kind of large scale Meta Materials - Google Patents
The preparation method and Meta Materials of a kind of large scale Meta Materials Download PDFInfo
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- CN103296459B CN103296459B CN201210051630.2A CN201210051630A CN103296459B CN 103296459 B CN103296459 B CN 103296459B CN 201210051630 A CN201210051630 A CN 201210051630A CN 103296459 B CN103296459 B CN 103296459B
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Abstract
The present invention discloses a kind of preparation method of large scale Meta Materials, topological graph including artificial metal's micro-structural on large scale Meta Materials is constituted is divided into the spirte that multiple sizes are less than 500*600 millimeters, then processes sub- metamaterial board according to spirte and assembled a little metamaterial board obtains large scale Meta Materials.The present invention also provides a kind of large scale Meta Materials, and the Meta Materials size is more than 500*600 millimeters.The present invention, without extra purchase large-sized processing equipment, has saved production technology and production cost by the way that large scale Meta Materials are divided into multiple sub- Meta Materials of small size.
Description
Technical field
The present invention relates to the preparation method and Meta Materials of Meta Materials technical field, more particularly to a kind of large scale Meta Materials.
Background technology
Light, as one kind of electromagnetic wave, it is when through glass, because the wavelength of light is much larger than the chi of atom
It is very little, therefore we can use the univers parameter of glass, such as refractive index, rather than the details parameter of the atom of composition glass to retouch
State response of the glass to light.Accordingly, when research material is to other electromagnetic responses, any yardstick is far small in material
The univers parameter of material, such as permittivity ε and magnetic permeability μ can also be used to responding for electromagnetic wave in the structure of electromagnetic wavelength
To describe.Cause the dielectric constant and magnetic conductivity of material each point all identical by the designing material structure of every or it is different so as to
So that the overall dielectric constant of material and magnetic conductivity are arranged in certain rule, the magnetic conductivity and dielectric constant of rule arrangement can make
Material is obtained to electromagnetic wave with response macroscopically, such as convergence electromagnetic wave, divergent electromagnetic ripple.Such has what rule was arranged
The material of magnetic conductivity and dielectric constant is referred to as Meta Materials.
As shown in figure 1, dimensional structure diagrams of the Fig. 1 for the elementary cell of composition Meta Materials.The elementary cell of Meta Materials
The base material 1 adhered to including man-made microstructure 2 and the man-made microstructure.Man-made microstructure is artificial metal micro structure, artificial gold
Belonging to micro-structural has the plane or three-dimensional topological structure that response can be produced to incident electromagnetic wave electric field and/or magnetic field, changes each
The pattern and/or size of artificial metal's micro-structural in Meta Materials elementary cell can change each Meta Materials elementary cell to entering
The response of radio magnetic wave.Preferably, coating 3, coating 3, man-made microstructure 2 and base are also covered with man-made microstructure 2
Material 1 constitutes the elementary cell of Meta Materials.Multiple Meta Materials elementary cells are arranged according to certain rules may be such that Meta Materials to electromagnetism
Ripple has the response of macroscopic view.Because Meta Materials integrally need to have incident electromagnetic wave macroscopical electromagnetic response, therefore each Meta Materials is basic
Response of the unit to incident electromagnetic wave need to form continuous response, and this requires that the size of each Meta Materials elementary cell is less than into radio
/ 10th of/5th of magnetic wave wavelength, preferably incident electromagnetic wave wavelength.In this segment description, we are artificial by super material
Material is overall to be divided into multiple Meta Materials elementary cells, but should know that such a division methods only for convenience of description, should not regard Meta Materials as
Spliced or assembled by multiple Meta Materials elementary cells, Meta Materials are that artificial metal's micro-structural cycle arranges in practical application
In may make up on base material, technique is simple and with low cost.It is basic that cycle arrangement refers to above-mentioned each Meta Materials artificially divided
Artificial metal's micro-structural on unit can produce continuous electromagnetic response to incident electromagnetic wave.
The preparation method of existing Meta Materials be by rigid PCB or PS plates the cycle arrange artificial metal's micro-structural,
And existing pcb board size maximum is generally 560mm*1200mm.The processing dimension of pcb board is primarily limited to existing PCB and added
The size limitation of construction equipment.The existing processing dimension applied to the PCB equipment processed is generally：Horizontal line processing dimension is 24
Inch (609.6mm) is wide, and length is not limited；Pad pasting machining dimension is 24 inches (609.6mm) wide, and length is not limited；Automatic exposure
Machining dimension is 24 inches * 30 inches (609.6mm*762mm)；Manual exposure machining dimension is 600mm*1200mm.
When needing to prepare large-sized Meta Materials, it is necessary to which equipment for customizing, increases equipment cost and maintenance cost.
The content of the invention
The technical problems to be solved by the invention are, for the above-mentioned deficiency of prior art, propose that one kind can be processed big
The preparation method of size Meta Materials.It is mainly flat characteristic using Meta Materials, and large scale Meta Materials are divided into small chi
Very little Meta Materials, then by the modes such as jigsaw, pressing obtain needed for size metamaterial board.
The technical scheme that the present invention solves the use of its technical problem is to propose a kind of preparation method of large scale Meta Materials,
It includes including step：
S1：The topological graph that artificial metal's micro-structural that cycle is arranged on large scale Meta Materials is constituted is divided into many
Individual size is less than 500*600 millimeters of spirte；
S2：Sub- metamaterial board with artificial metal's micro-structural is prepared according to the spirte after fractionation；
S3：By sub- metamaterial board jigsaw, the sub- Meta Materials after jigsaw constitute large scale Meta Materials；The following table on sub- Meta Materials
Face covering binding material is covered each by encapsulating material, encapsulating material, binding material and son on another surface of binding material simultaneously
Meta Materials constitute pre- uplap material；
S4：By the pressing of pre- uplap material.
Further, step S2 comprises the following steps：
S21：Metal foil is fixed on base material using binding agent and by way of hot pressing；
S22：Metal foil is removed behind unwanted part, artificial metal's micro-structural of cycle arrangement is formed on base material.
Further, in step S21, the binding agent is PUR, and hot pressing temperature is 60 to 120 DEG C, and hot pressing pressure is 5
To 35kg/cm2, hot pressing time is 15 to 80 minutes.
Further, in step S21, the binding agent is epoxy based binder or acrylic glue, hot pressing temperature
For 200 to 280 DEG C, hot pressing pressure is 30 to 40kg/cm2, hot pressing time is 60 to 120 minutes.
Further, metal foil is removed by unwanted part by etching mode, the etching mode includes step：In advance
Paste dry film, exposure, development, etching, pickling and move back film.
Further, it is additionally included in step S3 on the sub- Meta Materials and forms multiple first positioning holes, the package material
The multiple first positioning hole is provided with multiple second positioning holes on material.
Further, in step S4, the pre- uplap material, the vacuum hotpressing machine pressing are pressed using vacuum hotpressing machine
The pre- uplap material of polylith.
Further, described each piece pre- uplap material upper and lower surface is pasted with brown paper, and another surface of brown paper is set
It is equipped with steel plate.
Further, the steel plate thickness is 1.0-2.0 millimeters, and the ox-hide thickness of paper bottom is 0.1-0.3 millimeters.
The present invention also provides a kind of Meta Materials prepared by above-mentioned preparation method, and the Meta Materials size is more than 500*
600 millimeters.
The present invention by the way that large scale Meta Materials are divided into multiple sub- Meta Materials of small size, without extra purchase it is large-scale plus
Construction equipment, has saved production technology and production cost.
Brief description of the drawings
Fig. 1 is the structural representation for the elementary cell for constituting Meta Materials；
The topological structure for artificial metal's micro-structural that Fig. 2 adheres in the elementary cell to constitute electromagnetic wave absorption Meta Materials shows
It is intended to；
Fig. 3 is the fractionation schematic diagram of artificial metal's micro-structural topological structure shown in Fig. 2；
Fig. 4 is the structural representation of Super-material antenna；
Fig. 5 is the basic topology pattern of artificial metal's micro-structural in Super-material antenna；
Fig. 6 is a kind of derived structure of topological pattern shown in Fig. 5；
Fig. 7 is a kind of distressed structure of topological pattern shown in Fig. 5；
The first stage that Fig. 8 develops for the topology of the metal micro structure of plane flakes；
The second stage that Fig. 9 develops for the topology of the metal micro structure of plane flakes；
Figure 10 is the process chart of the preparation method of large scale Meta Materials of the present invention；
Figure 11 is the structural representation of pre- uplap material；
Structural representation when Figure 12 is pressing polylith pre- uplap material.
Embodiment
Using the principle of Meta Materials energy modulated electromagnetic wave, various types of Meta Materials can be designed.Inside Meta Materials
Whether index distribution can uniformly be divided into Meta Materials function Meta Materials and the major class of Super-material antenna two.
Function Meta Materials refer to that Meta Materials inner refractive index is evenly distributed, specifically, that is, constitute the basic of function Meta Materials
The topological pattern and size all same of all metal micro structures on unit.According to topological pattern and the difference of size, cause work(
Energy Meta Materials have different functions.Such as electromagnetic wave absorption, electromagnetic wave are transparent, metamaterial with high dielectric constant, high magnetic permeability surpass
Material, negative-magnetic-permeability meta-material etc..Illustrate such function Meta Materials design principle, other work(below with electromagnetic wave absorption Meta Materials
Energy Meta Materials can be obtained according to the principle by Computer simulation design.
As shown in Fig. 2 the artificial metal's micro-structural adhered in elementary cells of the Fig. 2 to constitute electromagnetic wave absorption Meta Materials
Topological structure schematic diagram.Artificial metal's micro-structural 30 includes the first metal branch 301, and first metal branch 301 is into one side
Quadrilateral shape with breach 3011；One end on the relative quadrangle side of breach 3011 and extends and prominent to breach 3011
Second metal branch 302 of breach 3011；Perpendicular to the 3rd metal branch 303 of the other end of the second metal branch 302.It is preferred that
Ground, artificial metal's micro-structural 30 is symmetry axis into bilateral symmetry with the second metal branch 302.It is responded to incident electromagnetic wave
Principle be：Relative metal branch is equivalent to capacity cell to adjust the relative dielectric constant ε of Meta Materials, endless metal point
The electric current inducted in branch is according to right-hand screw rule Induced magnetic field so as to adjust the relative permeability μ of Meta Materials.Specific to this reality
Apply example can behave as, as shown in figure 3, artificial metal's micro-structural 30 is split as in the Part I 30 ' of I-shaped and into one
The Part II 30 " of the quadrilateral shape of side breach.It can be seen from formula ε=CS/4 π kd, wherein ε is that Meta Materials are normal with respect to dielectric
Number, S are that the area of the 3rd metal branch 303, d are that the length of the second metal branch 302, k are that constant, C are equivalent electric capacity, Meta Materials
Relative dielectric constant ε can by adjust the 3rd metal branch 303 area S and the second metal branch 302 gap length come
Adjustment；Ring current is formed on into the Part II 30 " of the quadrilateral shape of one side breach, according to right-hand screw rule, annular electro
Miscarriage magnetisation is so as to influence the relative permeability μ of Meta Materials.The size of each metal branch of artificial metal's micro-structural is adjusted respectively
Artificial metal's micro-structural be can adjust to the response of incident electric fields and incident magnetic to adjust the relative dielectric that Meta Materials are overall
Constant ε and relative permeability μ so that Meta Materials reach the effect of electromagnetic wave absorption.
Super-material antenna is to utilize meta-material principle modulated electromagnetic wave so that Meta Materials can receive the faint letter transmitted at a distance
Number, and by the signal gathering into feed, or the electromagnetic wave that feed is radiated after Meta Materials are modulated with the side of plane wave
Formula is radiate.According to electromagnetic wave principle, the index distribution inside Super-material antenna is necessarily uneven, and due to Meta Materials day
Line is in tabular, as shown in figure 4, Super-material antenna 300 includes base material 3003, the cycle is arranged in multiple topologys on base material 3003
Structure and/or the not all the same multiple artificial metal's micro-structurals 3002 of size, are covered in covering in artificial metal's micro-structural 3002
Cap rock 3001.Super-material antenna refractive index meets certain rule arrangement n (x, y).X/y plane refers to plane where panel metamaterial.For
The refractive index arrangement n (x, y) of Super-material antenna is obtained, the basic topology shape of artificial metal's micro-structural can be first determined, then
By by the topology it is scaled or amplify to obtain required index distribution, also can be by gradually being drilled by a basic point
Artificial metal's micro-structural basic topology shape is faded to obtain required index distribution.Be described below gradually developed by basic point to
Artificial metal's micro-structural basic topology shape is in the way of index distribution needed for obtaining.
As shown in figure 5, its topological pattern for the man-made microstructure in one embodiment of the invention.Man-made microstructure topology
Structure is in isotropic plane snowflake type.Isotropism refer to along micro-structural central point by micro-structural where micro-structural put down
On face, the new pattern obtained after being rotated by 90 ° by any direction is all overlapped with original pattern.It can be simplified using isotropic micro-structural
Design, the electromagnetic wave of its all directions incident to plane where vertical micro-structural is respectively provided with identical electromagnetic response, with very
Good uniformity.
The micro-structural of plane snowflake type, which has, is mutually perpendicular to the first metal wire J1 for dividing equally and the second metal wire J2, and described the
One metal wire J1 is identical with the second metal wire J2 length, and the first metal wire J1 two ends are connected with two of equal length
One metal branch F1, the first metal wire J1 two ends are connected on two the first metal branch F1 midpoint, second gold medal
Category line J2 two ends are connected with two the second metal branch F2 of equal length, and the second metal wire J2 two ends are connected to two the
On two metal branch F2 midpoint, the first metal branch F1 and the second metal branch F2 equal length.
Fig. 6 is a kind of derived structure of the metal micro structure of the plane flakes shown in Fig. 5.It is in each first metal point
Branch F1 and each second metal branch F2 two ends are respectively connected with identical 3rd metal branch F3, and the corresponding 3rd
End points of the metal branch F3 midpoint respectively with the first metal branch F1 and the second metal branch F2 is connected.The rest may be inferred, this hair
It is bright to derive the metal micro structure of other forms.
Fig. 7 is a kind of distressed structure of the metal micro structure of the plane flakes shown in Fig. 5, the micro- knot of metal of such a structure
Structure, the first metal wire J1 and the second metal wire J2 are not straight lines, but folding line, and the first metal wire J1 and the second metal wire J2 are equal
Be provided with two kink WZ, but the first metal wire J1 and the second metal wire J2 be still it is vertical divide equally, pass through and bending be set
Relative position of the direction in portion with kink on the first metal wire and the second metal wire so that the metal micro structure shown in Fig. 7
All overlapped around perpendicular to the first metal wire with the figure that the axis of the second metal wire intersection point is rotated by 90 ° to any direction with artwork.
Furthermore it is also possible to have other deformations, for example, the first metal wire J1 and the second metal wire J2 are respectively provided with multiple kink WZ.
After the specific topological pattern for obtaining micro-structural, it can be obtained by way of micro-structural is proportionally reduced, amplified
The index distribution of whole metamaterial sheet, also can be by using a specific micro structured pattern as fundamental figure, with by drilling
Become and obtain the mode of fundamental figure to obtain the index distribution of whole metamaterial sheet.It is described in detail below with plane snowflake type
For fundamental figure, the specific steps of metamaterial sheet index distribution are obtained by developing mode：
(1) the attachment base material of micro-structural is determined.When Meta Materials elementary cell also include coating when, the material of coating with
Base material material is identical.Base material material can choose FR-4, F4B or PS material, and which kind of material no matter chosen, the folding of base material is can determine that
Radiance rate value.
2) size of metamaterial unit is determined.The size of metamaterial unit is obtained by the centre frequency of satellite, utilizes frequency
Obtain its wavelength, then take 1/5th numerical value less than wavelength as the length and width of metamaterial unit.
(3) material and topological structure of micro-structural are determined.In the present embodiment, the material of micro-structural is copper, and micro-structural is opened up
Metal micro structure of the structure for the plane flakes shown in Fig. 5 is flutterred, its line width W is consistent everywhere；Topological structure herein, refers to open up
Flutter the fundamental figure of evolutionary shapes.
(4) the topology parameter of metal micro structure is determined.As shown in figure 5, in the present invention, the metal of plane flakes is micro-
The topology parameter of structure includes the line width W, the first metal wire J1 of metal micro structure length a, the first metal branch F1's
Length b.
(5) the differentiation restrictive condition of the topology of metal micro structure is determined.In the present invention, the topological shape of metal micro structure
The differentiation restrictive condition of shape has, and the minimum spacing WL between metal micro structure is (i.e. as shown in figure 5, metal micro structure and Meta Materials
The long side of unit or the distance of broadside are WL/2), the line width W of metal micro structure, the size of metamaterial unit；
The topology of metal micro structure by the differentiation mode as shown in Fig. 8 to Fig. 9, corresponding to a certain specific frequency
(such as 11.95GHZ), can obtain a continuous variations in refractive index scope.
Specifically, including two stages, (it is basic that topology is developed for the differentiation of the topology of the metal micro structure
Figure is the metal micro structure shown in Fig. 5)：
First stage：According to restrictive condition is developed, in the case where b values keep constant, a values are changed to most from minimum value
Metal micro structure in big value, this evolution process is " ten " font when minimum value (a take except).
Second stage：According to restrictive condition is developed, when a increases to maximum, a keeps constant；Now, by b from minimum
Value increases continuously maximum, and the metal micro structure in this evolution process is plane flakes.
In the evolution process of above-mentioned first stage and second stage, it is required to ensure that the micro-structural in evolution process is opened up
Pattern is flutterred for isotropic topological pattern.
A kind of feature Meta Materials and a kind of design method of Super-material antenna are discussed above, in above-mentioned functions Meta Materials
Under being instructed with the design principle of Super-material antenna, the Meta Materials of various difference in functionalitys can be obtained.
When above-mentioned Meta Materials size is larger, when being greater than 500*600 millimeters, large scale Meta Materials of the present invention can be passed through
Preparation method is made.As shown in Figure 10, the preparation method includes step：
S1：The topological graph that artificial metal's micro-structural that cycle is arranged on large scale Meta Materials is constituted is divided into many
Individual size is less than 500*600 millimeters of spirte.
Spirte, which can be waited, does not wait greatly big yet, is original super material after artificial metal's micro structured pattern combination on spirte
Artificial metal's micro structured pattern of material.
S2：Sub- metamaterial board with artificial metal's micro-structural is prepared according to the spirte after fractionation.
Each sub- metamaterial board includes the artificial metal's micro-structural of base material and cycle arrangement thereon.Each sub- metamaterial board
Base material material is identical, can select the macromolecules such as FR4 materials, polytetrafluoroethylmaterial material, polystyrene material, polyimide material
Material.In one embodiment, the step of cycle arrangement artificial metal's micro-structural forms sub- Meta Materials on base material includes：
S21：Metal foil is fixed on base material using binding agent and by way of hot pressing.
Binding agent can select hot-melt adhesive, for example nylon phenolic aldehyde hot-melt adhesive, ethylene containing polymer hot-melt adhesive,
Acrylic resin curable hot melt binding agent etc., also can select thermosetting resin adhesive, such as epoxy adhesive, epoxy
Phenol-formaldehyde binders, amino resins binding agent etc..
When using PUR as binding agent, the parameter in hot pressing is：60 to 120 DEG C of hot pressing temperature, hot pressing pressure
Power 5 is to 35kg/cm2, hot pressing time is 15 to 80 minutes.
When the binding agent of the binding agent using epoxy radicals or acrylic, the parameter in hot pressing is：Hot pressing temperature
200 to 280 DEG C, hot pressing pressure 30 to 40kg/cm2, hot pressing time is 60 to 120 minutes.Wherein, the binding agent of epoxy radicals or third
The model of the binding agent of olefin(e) acid base can choose rule victory PEAP0120, Du Pont FR0200 etc..
Metal foil is preferably copper foil, and its thickness is preferably 0.018 millimeter to 0.056 millimeter.
S22：Metal foil is removed behind unwanted part, artificial metal's micro-structural of cycle arrangement is formed on base material.
In the present embodiment, metal foil is removed into the sides such as unwanted part can be carved using etching, carve, electronics, ion is carved
Formula.It is preferred to use artificial metal's micro-structural that metal foil is processed into cycle arrangement by etching mode.
The work flow of artificial metal's micro-structural of etching metal foil formation cycle arrangement is：It is pre- to paste dry film, exposure, show
Shadow, etching, pickling and move back film.Pre- patch dry film refers to stick dry film, wherein pad pasting pressure in the base material both sides using laminator
Power is 3-12kg/cm2, laminator wheel speeds are 1.0-3.5m/min, and pad pasting temperature is 90 to 130 DEG C.Exposure refers to paste
The base material of metal foil that is fixed with after film is exposed on UV exposure machines, and exposure series is 6-7 grades (using 21 grades of lighting level chis),
Vacuum is 85%-99%.
Preferably, in the present embodiment, the plate after exposure is further processed again after will also standing 15-30 minutes.
Development, etching, pickling and move back the design parameter of film and see the table below：
In above-mentioned development step, the concentration of potassium carbonate is preferably 1.0%；In above-mentioned acid pickling step, H2SO4Concentration is excellent
Elect 4% as, move back film step above-mentioned, naoh concentration is preferably 40g/L.In above-mentioned etching step, etching mother liquor can
From acidic cupric chloride solutions, i.e. copper chloride and hydrogen chloride solution.
Preferably, multiple water-washing step is also included between development and etching step, in pickling and is moved back between film step
Including multiple water-washing step, it will also repeatedly be washed and dried after film is moved back.
S3：By sub- metamaterial board jigsaw, the sub- Meta Materials after jigsaw constitute large scale Meta Materials；The following table on sub- Meta Materials
Face covering binding material is covered each by encapsulating material, encapsulating material, binding material and son on another surface of binding material simultaneously
Meta Materials constitute pre- uplap material.
As shown in figure 11, Figure 11 is the structural representation of pre- uplap material.In Figure 11, it is preferable that in each sub- Meta Materials
1000 edges of boards are also formed with multiple first positioning holes 1001, and the first position of positioning hole of each sub- Meta Materials is different, for preventing
Misspelled during jigsaw.The first positioning hole 1001 that encapsulating material 1002 corresponds to sub- Meta Materials 1000 is also equipped with multiple second positioning
Hole 1003., will envelope using rivet, PIN nails etc. after encapsulating material 1002, binding material 1004 and sub- Meta Materials 1000 are folded
Package material, binding material and sub- Meta Materials, which are fixed, constitutes pre- uplap material 100.
The material of encapsulating material can be identical from base material material also different, it is preferable that the material of encapsulating material and base material material
Matter is identical, is made by FR4 materials, polytetrafluoroethylmaterial material, polystyrene material, polyimide material Polymer material.
S4：By the pressing of pre- uplap material.
In the present embodiment, pre- uplap material is pressed using vacuum hotpressing machine.Preferably, in order to save process, expanding production
Scale, vacuum hotpressing machine can the pre- uplap material 100 of one step press polylith, preferably one step press 2-5 layers pre- uplap material 100.
As shown in figure 12,2 layers of pre- uplap material 100 have been pressed in Figure 12 above and below vacuum hotpressing machine between tool palette altogether, wherein, pre- uplap
It is all provided between material 100 and upper tool palette 101, two blocks of pre- uplap materials 100, between pre- uplap material 100 and lower tool palette 102
It is equipped with multi-disc steel plate 104 and multiwall kraft 105.The number of wherein every layer brown paper can be 2-10.Every layer of pre- uplap material
100 upper and lower surfaces are pasted with brown paper 105, and steel plate 104 is attached at another surface of brown paper 105.Steel plate and brown paper can will be more
The pre- uplap material of block is separated, while can also cause the pressure that hot press is transferred to pre- uplap material to be more uniformly distributed, it is ensured that pre- uplap
Material is finally successful in panel metamaterial form.
In the present embodiment, steel plate preferred thickness is the mirror steel plate of 1.0-2.0 mm of thickness, and brown paper thickness is preferably
0.1-0.3 millimeters.
The parameter of vacuum hotpressing machine pressing chooses different according to the difference of binding material 1004, for example, make when using PUR
During for binding material, the parameter in hot pressing is：60 to 120 DEG C of hot pressing temperature, hot pressing pressure 5 to 35kg/cm2, during hot pressing
Between be 15 to 80 minutes.
When the binding material of the binding material using epoxy radicals or acrylic, the parameter in hot pressing is：Hot pressing
200 to 280 DEG C of temperature, hot pressing pressure 30 to 40kg/cm2, hot pressing time is 60 to 120 minutes.Wherein, the bonding material of epoxy radicals
The model of the binding material of material or acrylic can choose rule victory PEAP0120, Du Pont FR0200 etc..
According to the processing dimension of vacuum hotpressing machine, Meta Materials prepared by the preparation methods of large scale Meta Materials of the invention
Size can reach 1016*1219.2 millimeters.When vacuum hotpressing machine processing dimension is bigger, obtained Meta Materials size can be processed also
It is bigger.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (7)
1. a kind of preparation method of large scale Meta Materials, it is characterised in that：Including step：
S1：The topological graph that artificial metal's micro-structural that cycle is arranged on large scale Meta Materials is constituted is divided into multiple chis
The very little spirte for being less than 500 millimeters * 600 millimeters；
S2：Sub- metamaterial board with artificial metal's micro-structural is prepared according to the spirte after fractionation；
S3：By sub- metamaterial board jigsaw, the sub- Meta Materials after jigsaw constitute large scale Meta Materials；Covered in sub- Meta Materials upper and lower surface
Lid binding material is covered each by encapsulating material, encapsulating material, binding material and the super material of son on another surface of binding material simultaneously
Material constitutes pre- uplap material；
S4：By the pressing of pre- uplap material；
In step s 4, the pre- uplap material is pressed using vacuum hotpressing machine, the vacuum hotpressing machine presses the pre- uplap of polylith
Material；
Each piece of pre- uplap material upper and lower surface is pasted with brown paper, and another surface of brown paper is provided with steel plate；Each
The edges of boards of the sub- Meta Materials are formed with multiple first positioning holes, and first position of positioning hole of each sub- Meta Materials is not
Together, multiple first positioning holes are provided with multiple second positioning holes on the encapsulating material.
2. preparation method as claimed in claim 1, it is characterised in that：Step S2 comprises the following steps：
S21：Metal foil is fixed on base material using binding agent and by way of hot pressing；
S22：Metal foil is removed behind unwanted part, artificial metal's micro-structural of cycle arrangement is formed on base material.
3. preparation method as claimed in claim 2, it is characterised in that：In step S21, the binding agent is PUR, hot pressing
Temperature is 60 to 120 DEG C, and hot pressing pressure is 5 to 35kg/cm2, hot pressing time is 15 to 80 minutes.
4. preparation method as claimed in claim 2, it is characterised in that：In step S21, the binding agent is epoxy based binder
Or acrylic glue, hot pressing temperature is 200 to 280 DEG C, and hot pressing pressure is 30 to 40kg/cm2, hot pressing time be 60 to
120 minutes.
5. preparation method as claimed in claim 2, it is characterised in that：Metal foil is removed by unwanted portion by etching mode
Point, the etching mode includes step：It is pre- to paste dry film, exposure, development, etching, pickling and move back film.
6. preparation method as claimed in claim 1, it is characterised in that：The steel plate thickness is 1.0-2.0 millimeters, the ox-hide
The thickness of paper is 0.1-0.3 millimeters.
7. Meta Materials prepared by a kind of preparation method as described in any one of claim 1 to 6, it is characterised in that：The super material
Expect that size is more than 500 millimeters * 600 millimeters.
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| CN101480806A (en) * | 2008-01-08 | 2009-07-15 | 秦拥均 | Laminated wood cabinet-work high-intensity decoration sheet material and preparation method thereof |
| CN202029487U (en) * | 2011-05-09 | 2011-11-09 | 景旺电子（深圳）有限公司 | Novel aluminum-based copper clad laminate lamination and arrangement structure |
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| US7804464B2 (en) * | 2007-10-31 | 2010-09-28 | Communications & Power Industries, Inc. | Adjustable paneling system for a phasing structure |
| CN102299422A (en) * | 2011-05-18 | 2011-12-28 | 东南大学 | Zero-refractive-index flat lens antenna based on magnetic resonance structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101480806A (en) * | 2008-01-08 | 2009-07-15 | 秦拥均 | Laminated wood cabinet-work high-intensity decoration sheet material and preparation method thereof |
| CN202029487U (en) * | 2011-05-09 | 2011-11-09 | 景旺电子（深圳）有限公司 | Novel aluminum-based copper clad laminate lamination and arrangement structure |
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Effective date of registration: 20210517 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. |