CN112273747B - Multiband stealth garment based on photonic crystal film material - Google Patents
Multiband stealth garment based on photonic crystal film material Download PDFInfo
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- CN112273747B CN112273747B CN202011125743.3A CN202011125743A CN112273747B CN 112273747 B CN112273747 B CN 112273747B CN 202011125743 A CN202011125743 A CN 202011125743A CN 112273747 B CN112273747 B CN 112273747B
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- stealth
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- photonic crystal
- multiband
- infrared
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- 239000004038 photonic crystal Substances 0.000 title claims abstract description 41
- 239000000463 material Substances 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 229910021389 graphene Inorganic materials 0.000 claims description 15
- 239000004744 fabric Substances 0.000 claims description 14
- 239000011358 absorbing material Substances 0.000 claims description 12
- 239000010408 film Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 9
- 229920001940 conductive polymer Polymers 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 5
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 5
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 5
- 238000007738 vacuum evaporation Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 229920000767 polyaniline Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 229910052714 tellurium Inorganic materials 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 238000009958 sewing Methods 0.000 claims description 2
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000011218 segmentation Effects 0.000 abstract description 2
- 230000004083 survival effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 238000002310 reflectometry Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D1/00—Garments
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/0002—Details of protective garments not provided for in groups A41D13/0007 - A41D13/1281
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/02—Layered materials
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
- G02B1/115—Multilayers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention relates to a multiband stealth garment based on a photonic crystal film material, which comprises a photonic crystal optical infrared composite stealth layer and a flexible radar wave-absorbing base layer, wherein the photonic crystal optical infrared composite stealth layer comprises a near infrared stealth layer positioned on an outer layer, a middle infrared stealth layer positioned on a middle layer and a far infrared stealth layer positioned on a lower layer, and the far infrared stealth layer is positioned on the surface of the flexible radar wave-absorbing base layer. The multiband stealth garment based on the photonic crystal film material disclosed by the invention has the advantages that the band gap characteristic and the radar wave transmission characteristic of the photonic crystal are applied to the field of military stealth camouflage, the camouflage segmentation effect is achieved in both optical and infrared bands, and the multiband stealth garment is applied to equipment, so that the multiband stealth garment has important significance for protecting important military targets of army and improving the survival probability of weaponry.
Description
Technical Field
The invention belongs to the technical field of military camouflage, and particularly relates to a multiband stealth garment based on a photonic crystal film material.
Background
As an artificial periodic structure material, photonic crystals have excellent photonic band gap characteristics. Without any photon states present in the photonic band gap, spontaneous emission of electromagnetic waves having frequencies falling within the photonic band gap is completely suppressed (or electromagnetic waves having frequencies falling within the band gap are prevented from propagating). Using band gap to locate in the sensitive wave band (3-5)And 8-12) The photonic crystal of the infrared detector can effectively inhibit the radiation of the detectable wave band of the infrared detector without affecting the radiation of other wavelengths. Meanwhile, the photonic crystal material can be almost completely transparent to radar waves without adopting metal, so that the photonic crystal material is well compatible with radar wave absorbing materials.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide the multiband stealth garment based on the photonic crystal film material, which has a camouflage segmentation effect and has the wave-absorbing stealth capability in a radar wave band.
In order to solve the technical problems, the invention adopts the following technical scheme:
the multiband stealth garment comprises a photonic crystal optical infrared composite stealth layer and a flexible radar wave-absorbing base cloth layer, wherein the photonic crystal optical infrared composite stealth layer comprises a near infrared stealth layer positioned on an outer layer, a middle infrared stealth layer positioned on a middle layer and a far infrared stealth layer positioned on a lower layer, and the far infrared stealth layer is positioned on the surface of the flexible radar wave-absorbing base cloth layer.
As a further improvement of the above technical scheme:
the photonic crystal optical infrared composite stealth layer is of a photonic crystal film structure and is manufactured by a vacuum evaporation coating method.
The flexible radar wave-absorbing base cloth layer of the multiband stealth clothing is made by coating wave-absorbing materials on non-woven fabrics by a coating method.
The wave absorbing material consists of graphene, magnetic metal and conductive polymer.
The mass ratio of the wave-absorbing material is graphene: magnetic metal: conductive high polymer = 1:2:1, wherein graphene is graphene powder, magnetic metal is iron powder, conductive polymer is polyaniline, graphene is graphene powder, and more than 80% of the components are 1-4 layers.
When the coating thickness of the wave-absorbing material is smaller than 1mm, the absorption attenuation of 8-12GHz radar waves is larger than 60%.
As can be seen from the technical scheme, the multiband stealth garment based on the photonic crystal film material provided by the invention has the advantages that the band gap characteristic and the radar wave transmission characteristic of the photonic crystal are applied to the field of military stealth camouflage, and the multiband stealth garment is obtained in the optical (0.38-1.1/>) And the infrared band (3-5 +.>And 8-12->) The method has the camouflage splitting effect, is applied to equipment, and has important significance for protecting important military targets of army and improving survival probability of weaponry.
Drawings
FIG. 1 is a schematic view of the stealth garment composition of the present invention;
FIG. 2 is a schematic view of the stealth garment of the present invention;
fig. 3 is a schematic diagram of the photonic crystal structure of the stealth garment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1-3, the multiband stealth garment based on the photonic crystal film material of the embodiment is made of a photonic crystal optical infrared composite stealth layer 1 and a flexible radar wave-absorbing base cloth layer 2, wherein the photonic crystal optical infrared composite stealth layer is of a photonic crystal film structure, is made by a vacuum evaporation coating method, has spectrum selectivity, does not cause accumulation of human body heat, is transparent to radar waves, does not influence the wave-absorbing performance of the radar wave-absorbing base cloth of the lower layer, and meets stealth requirements in visible light, near infrared and middle-far infrared wave bands. The wave absorbing material of the flexible radar wave absorbing base cloth is a three-phase composite material of graphene, magnetic metal and conductive polymer, and the flexible radar wave absorbing base cloth is manufactured through coating, bonding and other processes, and the absorption attenuation of 8-12GHz radar waves is more than 60% on the thickness smaller than 1 mm.
The photonic crystal optical infrared composite stealth layer consists of a near infrared stealth layer 11, a middle infrared stealth layer 12 and a far infrared stealth layer 13, wherein the far infrared stealth layer 13 is positioned on the surface of the flexible radar wave-absorbing base cloth layer. In the photonic crystal optical infrared composite stealth layer 1, a visible light near infrared stealth layer 11 is positioned at the outermost layer and is used for realizing different colors of visible light, so that targets are fused into the background to realize camouflage, and the infrared composite stealth layer has the near infrared reflectivity characteristic of typical objects. The layer has very high transparency in the middle-far infrared band, the existence of the layer can not obviously influence the middle-far infrared stealth performance, and meanwhile, the wave absorbing performance of the radar wave absorbing cloth can not be obviously influenced. The middle infrared (3-5 μm) and far infrared (8-12 μm) stealth layers are respectively positioned at the lower layer and the middle layer, have three different reflectivities, respectively called as high-reflectivity infrared stealth layers, and can be combined according to the needs, so that the infrared camouflage splitting effect can be realized.
The flexible radar wave-absorbing base cloth of the multiband stealth clothing is made by coating wave-absorbing materials on non-woven fabrics by a coating method. The wave-absorbing material consists of graphene, magnetic metal and conductive polymer, wherein the mass ratio of the graphene is as follows: magnetic metal: conductive high polymer = 1:2:1, wherein the graphene is graphene powder, the magnetic metal is iron powder, and the conductive polymer is polyaniline. The coating thickness was 1mm and the absorption attenuation of 8-12GHz radar waves was 65%.
The photonic crystal optical infrared composite stealth layer of the multiband stealth garment is a photonic crystal optical infrared composite stealth layer as shown in figure 3The photonic crystal thin film structure shown, as shown in figure 3,、/>tellurium (Te) material is selected>、/>Calcium fluoride (CaF) 2 ) A material. And coating a film on the flexible radar wave-absorbing base cloth by a vacuum evaporation coating method. When->=330nm、/>=960nm、/>=420nm、/>When the wavelength is =1110nm, m=6 and n=4, the stealth garment with low emissivity is prepared; when->=390nm、/>=1040nm、/>=510nm、/>When the wavelength is equal to 5000 nm, m is equal to 6, and n is equal to 4, the moderate emissivity stealth garment is prepared; when->=410nm、/>=1080nm、/>=520nm、/>When=1330nm, m=5, n=5, a high emissivity stealth garment was prepared. And cutting and sewing the stealth clothing materials with three different emissivity to obtain the final camouflage cloth.
The photonic crystal optical infrared composite stealth layer is prepared by vacuum evaporation coating. The process parameters during the preparation are background vacuum degreeTellurium (Te) deposition rate of 0.5nm/s, calcium fluoride (CaF) 2 ) The deposition rate of (2) was 0.6nm/s and the substrate temperature was 100 ℃.
The stealth clothing has spectral selectivity and good heat dissipation, does not cause accumulation of human body heat, and has the emissivity tail of 0.2 of the low emissivity photonic crystal in the middle infrared and far infrared wave bands; the emissivity of the medium emissivity photonic crystal in the middle infrared and far infrared wave bands is 0.6, the emissivity of the high emissivity photonic crystal in the middle infrared and far infrared wave bands is 0.9, the stealth requirements are met in the visible light, near infrared and middle far infrared wave bands, and the absorption attenuation of radar waves is 65 percent
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (3)
1. A multiband stealth garment based on photonic crystal film material, characterized in that: the device comprises a photonic crystal optical infrared composite stealth layer and a flexible radar wave-absorbing base layer, wherein the photonic crystal optical infrared composite stealth layer comprises a near infrared stealth layer positioned at an outer layer, a middle infrared stealth layer positioned at a middle layer and a far infrared stealth layer positioned at a lower layer, and the far infrared stealth layer is positioned on the surface of the flexible radar wave-absorbing base layer;
the photonic crystal optical infrared composite stealth layer is of a photonic crystal film structure and is manufactured by a vacuum evaporation coating method;
the photonic crystal film structure is as follows: h 1 、H 2 Tellurium material L is selected 1 、L 2 Selecting a calcium fluoride material; l (L) 1 、H 1 M layers in total, L 2 、H 2 N layers altogether, when H 1 ＝330nm、L 1 ＝960nm、H 2 ＝420nm、L 2 When the wavelength is =1110nm, m=6 and n=4, the stealth garment with low emissivity is prepared; when H is 1 ＝390nm、L 1 ＝1040nm、H 2 ＝510nm、L 2 When the wavelength is equal to 5000 nm, m is equal to 6, and n is equal to 4, the moderate emissivity stealth garment is prepared; when H is 1 ＝410nm、L 1 ＝1080nm、H 2 ＝520nm、L 2 When the wavelength is 1330nm, m=5 and n=5, preparing the high-emissivity stealth clothing; cutting and sewing three stealth clothing materials with different emissivity to obtain a final camouflage cloth;
the flexible radar wave-absorbing base cloth layer of the multiband stealth clothing is made by coating wave-absorbing materials on non-woven fabrics by a coating method;
the wave absorbing material consists of graphene, magnetic metal and conductive polymer;
the mass ratio of the wave-absorbing material is graphene: magnetic metal: conductive high polymer = 1:2:1.
2. the photonic crystal thin film material-based multiband stealth garment according to claim 1, wherein: the graphene is graphene powder, the magnetic metal is iron powder, and the conductive polymer is polyaniline.
3. The photonic crystal thin film material-based multiband stealth garment according to claim 1, wherein: when the coating thickness of the wave-absorbing material is smaller than 1mm, the absorption attenuation of 8-12GHz radar waves is larger than 60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011125743.3A CN112273747B (en) | 2020-10-20 | 2020-10-20 | Multiband stealth garment based on photonic crystal film material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011125743.3A CN112273747B (en) | 2020-10-20 | 2020-10-20 | Multiband stealth garment based on photonic crystal film material |
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| CN112273747A CN112273747A (en) | 2021-01-29 |
| CN112273747B true CN112273747B (en) | 2024-01-19 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031313A (en) * | 2021-03-19 | 2021-06-25 | 浙江大学 | Adjustable infrared camouflage and stealth film based on phase-change material |
| CN113983867B (en) * | 2021-11-19 | 2023-10-27 | 合肥中隐新材料有限公司 | Double-layer multiband stealth camouflage net based on photonic crystal technology |
| CN115077302B (en) * | 2022-08-18 | 2022-11-04 | 合肥中隐新材料有限公司 | Radar stealth external member based on metamaterial |
| CN115745423B (en) * | 2022-12-07 | 2024-04-09 | 中国人民解放军国防科技大学 | Infrared camouflage glass film and preparation method thereof |
| CN116815118A (en) * | 2023-06-29 | 2023-09-29 | 中国人民解放军国防科技大学 | Flexible film material with both hydrophobic and far infrared band low emissivity and preparation method thereof |
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