CN103296437B - Manufacturing method for metamaterial board, metamaterial antenna housing and manufacturing method for metamaterial antenna housing - Google Patents
Manufacturing method for metamaterial board, metamaterial antenna housing and manufacturing method for metamaterial antenna housing Download PDFInfo
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- CN103296437B CN103296437B CN201210050412.7A CN201210050412A CN103296437B CN 103296437 B CN103296437 B CN 103296437B CN 201210050412 A CN201210050412 A CN 201210050412A CN 103296437 B CN103296437 B CN 103296437B
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- synthetic resin
- metamaterial
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- resin solution
- thermoset synthetic
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Abstract
The invention relates to a manufacturing method for a metamaterial board. The manufacturing method for the metamaterial board comprises the following steps of (1) using a piece of glass fiber cloth which has been dipped in a thermoset synthetic resin solution to manufacture a semi-solidified piece, (2) attaching a plurality of metal microstructures to the semi-solidified piece, (3) placing the semi-solidified piece with the attached metal microstructures between two pieces of glass fiber cloth with the thermoset synthetic resin solution in a dipping mode, and (4) carrying out heating and pressurization on the semi-solidified piece with the attached metal microstructures and the two pieces of glass fiber cloth with the thermoset synthetic resin solution in the dipping mode to combine the semi-solidified piece with the attached metal microstructures and the two pieces of glass fiber cloth with the thermoset synthetic resin solution in the dipping mode together in a pressing mode so as to obtain the metamaterial board. The manufacturing method for the metamaterial board is simple in process. Due to the facts that the metal microstructures are protected by the glass fiber cloth with thermoset synthetic resin, and the glass fiber cloth with the thermoset synthetic resin covers the two sides of each metal microstructure, abrasion cannot be easily caused, and good wave-transparent performance can be kept for a long time. The invention further relates to a metamaterial antenna housing made of the metamaterial board, and a manufacturing method for the metamaterial antenna housing.
Description
Technical field
The present invention relates to Meta Materials, more particularly, it relates to a kind of manufacture method of metamaterial plate, metamaterial antenna cover
And its manufacture method.
Background technology
Meta Materials are a kind of artificial composite structure materials of the extraordinary physical property with not available for natural material.When
Before, people are to be periodically arranged the metal micro structure with certain geometrical shape on medium substrate to form Meta Materials, but
It is that the course of processing is complicated, and also there is significant limitation in terms of the size of machinable metal micro structure.However, by
Can change the dielectric constant of spatial points using the geometry of metal micro structure and size and arrangement mode in people
And/or pcrmeability so as to expected electromagnetic response is produced, therefore people still expect that following Meta Materials have in every field
It is widely applied prospect, and actively input research and development.
At present, people have carried out Meta Materials as the applied research of electromagnetic wave transparent material, are particularly being made with Meta Materials
Make antenna house aspect.It is known that antenna house covers at the outside of antenna to protect antenna so as to from extraneous adverse circumstances
Affect.So, electromagnetic wave needs to be received or blazed abroad by antenna through antenna house, and it is good that this requires that antenna house has
Wave transparent performance, reduce the loss to electromagnetic wave as far as possible, and reflect little.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of manufacture method and tool of metamaterial plate of process is simple
There are the metamaterial antenna cover and its manufacture method of superperformance.
The technical solution adopted for the present invention to solve the technical problems is：A kind of manufacture method of metamaterial plate, the party
Method is comprised the following steps：
A prepreg is made using the glass fabric for impregnating thermoset synthetic resin solution；
Adhere to multiple metal micro structures on the prepreg；
The prepreg of the adhesion metal micro structure is placed in into another two glass for being impregnated with thermoset synthetic resin solution
Between fiber cloth；
Prepreg and two to the adhesion metal micro structure is impregnated with the glass fibre of thermoset synthetic resin solution
Cloth is heated and pressurizeed, so as to the prepreg of the adhesion metal micro structure and two are impregnated with into thermoset synthetic resin solution
Glass fabric is pressed together, and the metamaterial plate of integration is obtained.
Preferably, the thermoset synthetic resin solution includes glass microballoon and selected from unsaturated polyester resin, asphalt mixtures modified by epoxy resin
At least one in fat and phenolic resin, furane resins and vinyl ester resin.
Preferably, the weight accounting of the glass microballoon is 1-7%.
Preferably, described each metal micro structure is made up of metal wire.
Preferably, the prepreg is by the glass fabric heating to the dipping thermoset synthetic resin solution
And make thermoset synthetic resin become semi-cured state acquisition.
Preferably, make thermoset synthetic resin solution used by the prepreg and impregnated in another two glass fabric
On thermoset synthetic resin solution be identical.
Preferably, make thermoset synthetic resin solution used by the prepreg and impregnated in another two glass fabric
On thermoset synthetic resin solution be different.
Preferably, a metal forming is covered on the prepreg, and logical overetched method is on the prepreg
Form the plurality of metal micro structure.
Preferably, to the adhesion metal micro structure prepreg and two is impregnated with the glass of thermoset synthetic resin solution
Solidification temperature of the heating-up temperature of glass fiber cloth heating higher than the thermoset synthetic resin.
A kind of manufacture method of metamaterial antenna cover, comprises the following steps：
Manufacture polylith metamaterial plate, the metamaterial plate is using obtained in following methods：
A prepreg is made using the glass fabric for impregnating thermoset synthetic resin solution；
Adhere to multiple metal micro structures on the prepreg；
The prepreg of the adhesion metal micro structure is placed in into another two glass for being impregnated with thermoset synthetic resin solution
Between fiber cloth；
Prepreg and two to the adhesion metal micro structure is impregnated with the glass fibre of thermoset synthetic resin solution
Cloth is heated and pressurizeed, so as to the prepreg of the adhesion metal micro structure and two are impregnated with into thermoset synthetic resin solution
Glass fabric is pressed together and obtains final product the metamaterial plate；
Manufacture multiple plastic fastenings；
These metamaterial plates are linked together with these plastic fastenings and constitutes a metamaterial antenna cover.
Preferably, the plastic fastening is made up of ABS.
A kind of metamaterial antenna cover, the metamaterial antenna cover is using obtained in following methods：
Manufacture polylith metamaterial plate, the metamaterial plate is using obtained in following methods：
A prepreg is made using the glass fabric for impregnating thermoset synthetic resin solution；
Adhere to multiple metal micro structures on the prepreg；
The prepreg of the adhesion metal micro structure is placed in into another two glass for being impregnated with thermoset synthetic resin solution
Between fiber cloth；
Prepreg and two to the adhesion metal micro structure is impregnated with the glass fibre of thermoset synthetic resin solution
Cloth is heated and pressurizeed, so as to the prepreg of the adhesion metal micro structure and two are impregnated with into thermoset synthetic resin solution
Glass fabric is pressed together and obtains final product the metamaterial plate；
Manufacture multiple plastic fastenings；
These metamaterial plates are linked together the metamaterial antenna cover that constitute with these plastic fastenings.
The manufacture method of metamaterial plate of the present invention, metamaterial antenna cover and its manufacture method have following beneficial effect
Really：Process is simple, and metal micro structure protected by the glass fabric with thermoset synthetic resin for being covered in its both sides
Come, it is not easy to wear, make metamaterial plate and the metamaterial antenna cover that is made from it to keep stable electromagnetic performance, in addition, super
Material sheet material and the metamaterial antenna cover being made from it have the compact structure of integration, and mechanical performance is superior.
Description of the drawings
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described.
Fig. 1 is the flow chart of an embodiment of the manufacture method of the metamaterial plate of the present invention；
Fig. 2 be obtained in manufacture method using the metamaterial plate of the present invention one of metamaterial plate three-dimensional illustrate
Figure；
Fig. 3 be using the present invention metamaterial plate manufacture method obtained in prepreg a floor map；
Fig. 4 is the flow chart of an embodiment of the manufacture method of the metamaterial antenna cover of the present invention；
Fig. 5 be manufacture method using the metamaterial antenna cover of the present invention obtained in a solid of metamaterial antenna cover show
It is intended to.
Each label is corresponding entitled in figure：
10 prepregs, 12,20 glass fabrics, 14 metal micro structures, 30,40 metamaterial plates, 42 plastic fastenings,
44 metamaterial antenna covers
Specific embodiment
As shown in Figure 1 to Figure 3, it is the embodiment of manufacture method of metamaterial plate of the present invention and obtained super by it
One example of material sheet material, the embodiment is comprised the following steps：
Step 102：A prepreg 10 is made using the glass fabric 12 for impregnating thermoset synthetic resin solution.
Step 104：Adhere to multiple metal micro structures 14 on the prepreg 10.Only it is described shown in Fig. 2 and Fig. 3
One example of metal micro structure 14, in fact, the physical dimension and shape of the metal micro structure 14 can be according to being reached
To electromagnetic response arbitrarily change, and the arrangement mode of the plurality of metal micro structure 14 also can arbitrarily change.
Step 106：The prepreg 10 of the adhesion metal micro structure 14 is placed in into another two and is impregnated with thermosetting synthesis tree
Between the glass fabric 20 of lipoprotein solution.
Step 108：Thermoset synthetic resin is impregnated with to the prepreg 10 and two of the adhesion metal micro structure 14 molten
The glass fabric 20 of liquid is heated and pressurizeed, so as to the prepreg 10 and two of the adhesion metal micro structure 14 is impregnated with into heat
The glass fabric 20 of solid synthetic resin solution is pressed together, and the metamaterial plate 30 of integration is obtained.
Typically, the array arrangement of the plurality of metal micro structure 14 is on the prepreg 10, as shown in the figure.If will be every
Individual metal micro structure 14 and its part of prepreg 10 being located artificially are defined as a metamaterial unit, then each Meta Materials list
The physical dimension of unit should be less than 1/5th, preferably 1/10th of the electromagnetic wavelength of required response, and each metal is micro-
The physical dimension of structure 14 belongs to the same order of magnitude with the physical dimension of the metamaterial unit that it is located.
Specifically, in a step 102, need to prepare the thermoset synthetic resin solution.Typically, the thermosetting synthesis
Resin solution may include any one or more in unsaturated polyester resin, epoxy resin and phenolic resin.And the thermosetting
Property synthetic resin solution can add other auxiliary materials such as initiator, accelerator, fire retardant, solvent depending on concrete condition.This enforcement
In example, the thermoset synthetic resin solution is with unsaturated polyester resin as preparation of raw material, wherein and adding weight accounting
For the glass microballoon of 1-7%.Glass microballoon is a kind of size small (typical particle size range is 10-180 microns) and lightweight (heap
Product density be 0.1-0.28 gram it is per cubic centimeter) hollow glass spheroid, be mainly made up of silicon dioxide and aluminium sesquioxide etc.,
With the excellent properties such as low heat conduction, sound insulation, high dispersive, electrical insulating property and heat stability be good.Glass microballoon adds the thermosetting
In cellular after synthetic resin solution, so as to improve the porosity of the thermoset synthetic resin solution so as to dielectric constant
Reduce with loss angle tangent.When glass microballoon and other auxiliary materials are added into the thermoset synthetic resin solution, should make
They are sufficiently mixed.Typically, we can adopt churned mechanically mode (as using the mixer for not producing whirlpool) to carry out it
It is sufficiently stirred for and makes their mix homogeneously.
When preparing the thermoset synthetic resin solution, you can with its impregnated glass fiber cloth.In the present embodiment, we
Using handss paste technique, with such as hairbrush, scraper plate or dipping roller handss paste instrument by the thermoset synthetic resin solution equably
It is coated on a work top, then the glass fabric is overlying on the thermoset synthetic resin solution, uses presser
Tool flattens the glass fabric, makes the thermoset synthetic resin solution be thoroughly impregnated with the glass fabric.In fact, by institute
State method of the thermoset synthetic resin solution impregnation on the glass fabric a lot, existing any one side can be adopted
Method, however it is not limited to the above.It should be noted that described being coated on the thermoset synthetic resin solution using hairbrush
Otherwise the fiber of the glass fabric should can be disarrayed and shift fiber using a brush method when on glass fabric, so that
The thermoset synthetic resin solution skewness, thickness differ.In addition, in order to ensure the surface of the glass fabric without
Greasy dirt, free from smutting, free from admixture, should carry out respective handling to it；The glass fabric includes various by made by glass fibre
The product of form, not only can be cloth, or band, felt, yarn etc..
After thermoset synthetic resin solution being impregnated on the glass fabric, you can heat preliminary drying to it, make thermosetting
Synthetic resin solution is in semi-cured state (B-Stage), so as to the prepreg 10 is obtained.We are using baking oven to institute
State and be impregnated with the glass fabric of thermoset synthetic resin solution and heated, acid extraction is according to the resin for being used
Depending on the property of raw material, such as high for heat resisting temperature resin raw material, heating-up temperature can be and low for heat resisting temperature with higher
Resin raw material, heating-up temperature can be with lower.Thermoset synthetic resin solution above refers to thermosetting in semi-cured state
Property synthetic resin solution loses flowability because of condensation but has not occurred the stage of chemical crosslink reaction.
At step 104, the metal micro structure 14 on the prepreg 10 is by pasting a metal forming thereon such as
Copper Foil is simultaneously formed using certain processing technique as the method for etching is processed to the metal forming.Plus man-hour, only need
Should not metal foil portion get rid of, and the metal foil portion for staying just forms the plurality of metal micro structure 14.Typically, often
Individual metal micro structure 14 is the planar structure with certain geometrical shape being made up of metal wire such as copper wire etc., and multiple metals are micro-
Structure 14 is then arranged in a certain way.In addition, the metal micro structure 14 also can spatially structure.In order to increase metal forming and institute
The cohesion between prepreg 10 is stated, one layer of adhesive can be applied in the metal forming.
In step 106, impregnated in the thermoset synthetic resin solution described with making half on another two glass fabric 20
Thermoset synthetic resin solution used by cured sheets 10 both can be identical, or different, thermosetting preferably of the same race
Property synthetic resin solution.Even if the thermoset synthetic resin solution that impregnated on another two glass fabric 20 is described with making partly solid
The thermoset synthetic resin solution changed used by piece 10 is different, also should wherein add a certain proportion of glass microballoon.And with heat
Solid synthetic resin solution can be adopted and heat when making the prepreg 10 come the method for impregnating another two glass fabric 20
Solid synthetic resin solution is impregnating the identical handss paste technique of the glass fabric 12.When the leaching on another two glass fabric 20
During stain thermoset synthetic resin solution, you can the prepreg 10 of the adhesion metal micro structure 14 is placed in into another two glass fibers
Between dimension cloth 20.In addition, depending on the quantity of the glass fabric 20 can be according to the thickness of actual requirement, being not limited to two-layer.
In step 108, the prepreg 10 and two of the adhesion metal micro structure 14 can be impregnated with using hot press
The glass fabric 20 of thermoset synthetic resin solution is heated and pressurizeed.When the prepreg 10 of the adhesion metal micro structure 14
When the glass fabric 20 for being impregnated with thermoset synthetic resin solution with two is superimposed, the work of hot press is placed them in
Make on table top, its heating-up temperature, heat time heating time and pressure applied mixed up as needed, you can they are heated and is pressurizeed,
Make thermoset synthetic resin solution on the glass fabric 20 of the prepreg 10 and two that chemical reaction to occur and crosslinking curing,
So as to the dense metamaterial plate 30 of integration is obtained.Typically, the heating-up temperature of hot press should reach and be closed for preparing thermosetting
The solidification temperature of the raw material of resin solution, for the unsaturated polyester resin in the present embodiment, heating-up temperature should not surpass
120 DEG C are crossed, general control is between 50-80 DEG C.Heat time heating time is relevant with heating-up temperature, and pressure applied should be suitable, pressure
Power is too small, meeting leaving gap in the metamaterial plate 30, causes electric property to be deteriorated, and pressure is excessive, can be in the super material
Internal stress is formed in flitch material 30, causes its size and shape unstable, and be also contemplated that glass microballoon bearing capacity and
Impact to the metal micro structure 14.
In addition, if it is desired to when forming the metamaterial plate with multiple layer metal micro structure, multi-disc is obtained using step 104
Prepreg 10, or a large-area prepreg 10 is obtained using step 104, then its cutting is divided into into multi-disc small area
Prepreg 10, and the adhesion metal micro structure 14 on every prepreg 10；If the multi-disc prepreg 10 is placed in
It is dry to be impregnated between the glass fabric 20 of thermoset synthetic resin solution, and without any directly contact of two panels prepreg 10,
Then it is they are hot-forming together.
From the foregoing, it will be observed that compare existing manufacture method, the manufacture method of metamaterial plate of the present invention is by metal micro structure 14
It is attached on prepreg 10, and the prepreg 10 for being attached to metal micro structure 14 is placed in into two and is impregnated with thermosetting synthesis tree
Between the glass fabric 20 of lipoprotein solution, and integrated dense metamaterial plate 30 is obtained using heat pressing process, not only work
Skill is simple, and the metal micro structure 14 is protected by the glass fabric 20 with thermoset synthetic resin for being covered in its both sides
Shield is got up, not easy to wear, allows the metamaterial plate 30 to keep stable electromagnetic performance；The dielectric of the metamaterial plate 30
Constant and loss angle tangent are relatively low, also with good wave transparent performance.In addition, each layer of the metamaterial plate 30 is closely tied
It is combined, forms the compact structure of integration, mechanical performance is superior.
Refer to Fig. 4 and Fig. 5, be the present invention metamaterial antenna cover manufacture method an embodiment and by obtained in it
One example of metamaterial antenna cover, the embodiment is comprised the following steps：
Step 302：Manufacture polylith metamaterial plate 40.In the present embodiment, the metamaterial plate 40 is using the present invention's
The manufacture method of metamaterial plate is being obtained.
Step 304：Manufacture multiple plastic fastenings 42.In the present embodiment, the plastic fastening is made up of ABS.
Step 306：These metamaterial plates 40 are linked together with these plastic fastenings 42 and constitutes a Meta Materials
Antenna house 44.In the present embodiment, the metamaterial antenna cover 44 is the Beautified radome (as shown in Figure 5) for antenna for base station,
It is substantially in hollow cube shape.
As can be seen here, the metamaterial antenna cover 44 includes polylith metamaterial plate 40 and connects these metamaterial plates 40
Pick up the multiple plastic fastenings 42 for coming.Due to the dielectric constant and loss angle tangent of the metamaterial plate 40 it is relatively low, so,
Also accordingly reduced by the dielectric constant and loss angle tangent of its obtained metamaterial antenna cover 44, when electromagnetic wave is passed through, reflection and
Loss is reduced, and so, its wave transmission rate is greatly improved, and meets application request.Additionally, we can be according to antenna house
Thickness requirement and using the manufacture method of the present invention the metamaterial plate 40 of respective thickness is obtained, and then use it to making
Antenna house, to meet diversified demand.
The above is only some specific embodiments of the present invention, should not be construed as limiting the invention.For this skill
For the those of ordinary skill in art field, on the premise of without departing from basic thought of the present invention, can also make it is some improvement and
Retouching, when being such as intended to for the metamaterial plate 30 to make certain shape, in the prepreg to the adhesion metal micro structure 14
10 and two the glass fabric 20 for being impregnated with thermoset synthetic resin solution heat and be placed in when pressurizeing one there is corresponding die cavity
On mould, by hot press hot-press solidifying molding, it can be seen that, the metamaterial plate 30 can be in any shape；It is described
Glass fabric 20 also can be substituted by Kai Fu products that dimension, carbon fiber and Folium Agaves Sisalanae make of towing, and these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (12)
1. a kind of manufacture method of metamaterial plate, it is characterised in that the method is comprised the following steps：
A prepreg is made using the glass fabric for impregnating thermoset synthetic resin solution；
Adhere to multiple metal micro structures on the prepreg；
The prepreg of the adhesion metal micro structure is placed in into another two glass fibre for being impregnated with thermoset synthetic resin solution
Between cloth；
Prepreg and two glass fabrics for being impregnated with thermoset synthetic resin solution to the adhesion metal micro structure adds
Heat and pressurization, so as to the prepreg of the adhesion metal micro structure and two to be impregnated with the glass of thermoset synthetic resin solution
Fiber cloth is pressed together, and the thermoset synthetic resin solution occurs chemical reaction and crosslinking curing, so as to be obtained one
The metamaterial plate of body,
Wherein, the prepreg and glass fabric directly contact.
2. the manufacture method of metamaterial plate according to claim 1, it is characterised in that the thermoset synthetic resin is molten
Liquid includes glass microballoon and selected from unsaturated polyester resin, epoxy resin and phenolic resin, furane resins and vinyl ester resin
In at least one.
3. the manufacture method of metamaterial plate according to claim 2, it is characterised in that the weight of the glass microballoon is accounted for
Than for 1-7%.
4. the manufacture method of metamaterial plate according to claim 1, it is characterised in that described each metal micro structure by
Metal wire is constituted.
5. the manufacture method of metamaterial plate according to claim 1, it is characterised in that the prepreg is by right
The glass fabric of the dipping thermoset synthetic resin solution heats and makes thermoset synthetic resin become semi-cured state and obtain
.
6. the manufacture method of metamaterial plate according to claim 1, it is characterised in that make used by the prepreg
Thermoset synthetic resin solution with to impregnated in the thermoset synthetic resin solution on another two glass fabric be identical.
7. the manufacture method of metamaterial plate according to claim 1, it is characterised in that make used by the prepreg
Thermoset synthetic resin solution to impregnated in the thermoset synthetic resin solution on another two glass fabric be different.
8. the manufacture method of metamaterial plate according to claim 1, it is characterised in that cover on the prepreg
One metal forming, and logical overetched method forms the plurality of metal micro structure on the prepreg.
9. the manufacture method of metamaterial plate according to claim 1, it is characterised in that to the adhesion metal micro structure
Prepreg and two be impregnated with thermoset synthetic resin solution glass fabrics heating heating-up temperature be higher than the thermosetting
The solidification temperature of property synthetic resin.
10. a kind of manufacture method of metamaterial antenna cover, it is characterised in that the method is comprised the following steps：
Using the method manufacture polylith metamaterial plate described in any one in claim 1 to 9；
Manufacture multiple plastic fastenings；
These metamaterial plates are linked together with these plastic fastenings and constitutes a metamaterial antenna cover.
The manufacture method of 11. metamaterial antenna covers according to claim 10, it is characterised in that the plastic fastening by
ABS makes.
12. a kind of metamaterial antenna covers, it is characterised in that the metamaterial antenna cover is using any in claim 10-11
Obtained in method described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210050412.7A CN103296437B (en) | 2012-02-29 | 2012-02-29 | Manufacturing method for metamaterial board, metamaterial antenna housing and manufacturing method for metamaterial antenna housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210050412.7A CN103296437B (en) | 2012-02-29 | 2012-02-29 | Manufacturing method for metamaterial board, metamaterial antenna housing and manufacturing method for metamaterial antenna housing |
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| CN103296437B true CN103296437B (en) | 2017-04-26 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466421A (en) * | 2013-09-18 | 2015-03-25 | 深圳光启高等理工研究院 | Artificial electromagnetic material, manufacturing method of artificial electromagnetic material, antenna housing and antenna system |
| CN104466420A (en) * | 2013-09-18 | 2015-03-25 | 深圳光启高等理工研究院 | Artificial electromagnetic material, manufacturing method of artificial electromagnetic material, antenna housing and antenna system |
| CN108466436A (en) * | 2018-05-25 | 2018-08-31 | 上海艾郎风电科技发展（集团）有限公司 | The hand pasting forming method of hand pasting forming operation console and the outer reinforcing member of blade |
| WO2021022885A1 (en) * | 2019-08-05 | 2021-02-11 | 深圳光启高端装备技术研发有限公司 | Metamaterial, radome and aircraft |
| WO2021022884A1 (en) * | 2019-08-05 | 2021-02-11 | 深圳光启高端装备技术研发有限公司 | Metamaterial, radome and aircraft |
| CN111244636A (en) * | 2020-02-27 | 2020-06-05 | 江苏易珩空间技术有限公司 | Subarray, array surface and device for integrated electromagnetic characteristic regulation of composite material |
| CN111430904A (en) * | 2020-04-30 | 2020-07-17 | 西安朗普达通信科技有限公司 | Decoupling antenna housing for improving antenna array coupling performance and improving method thereof |
| CN113745841B (en) * | 2021-07-29 | 2023-08-29 | 中国人民解放军92728部队 | Conformal electromagnetic stealth subsurface and design method thereof |
| CN115139548A (en) * | 2022-06-29 | 2022-10-04 | 湖南大学 | Composite material preparation method based on hand lay-up forming process |
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| CN101643571A (en) * | 2009-08-24 | 2010-02-10 | 广东生益科技股份有限公司 | Thermosetting resin composition and prepreg and laminate for printed circuits thereby |
| CN102176543A (en) * | 2010-12-22 | 2011-09-07 | 北京航空航天大学 | Cross spiral frequency selective surface (FSS) structure with dual band characteristics and construction method thereof |
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| JP5244437B2 (en) * | 2008-03-31 | 2013-07-24 | 富士フイルム株式会社 | UV absorber composition |
| US8350777B2 (en) * | 2010-02-18 | 2013-01-08 | Raytheon Company | Metamaterial radome/isolator |
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| CN101643571A (en) * | 2009-08-24 | 2010-02-10 | 广东生益科技股份有限公司 | Thermosetting resin composition and prepreg and laminate for printed circuits thereby |
| CN102176543A (en) * | 2010-12-22 | 2011-09-07 | 北京航空航天大学 | Cross spiral frequency selective surface (FSS) structure with dual band characteristics and construction method thereof |
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