CN204125790U - Wave frequency selects logical textiles thoroughly - Google Patents
Wave frequency selects logical textiles thoroughly Download PDFInfo
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- CN204125790U CN204125790U CN201420534528.2U CN201420534528U CN204125790U CN 204125790 U CN204125790 U CN 204125790U CN 201420534528 U CN201420534528 U CN 201420534528U CN 204125790 U CN204125790 U CN 204125790U
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Abstract
The utility model discloses a kind of wave frequency and select logical textiles thoroughly.Described textiles comprises basic unit and is located at least one deck periodically conductive pattern layer in described basic unit, and described basic unit is flexible fabric layer.The utility model utilizes the reasonable combination of textiles formed machining technique and local metalization processing techniques to carry out design frequency and selects logical textiles thoroughly, and band resistance or band passband rate can design, and have flexibility, deflection and lighting characteristic.Can be applicable to the product such as high-performance Radiation proof dress, battleficld command tent, and bilayer or sandwich construction can be adopted to carry out the logical or belt-resistance function of reinforcing tape.
Description
Technical field
The utility model relates to a class wave frequency and selects logical textiles thoroughly.
Background technology
Frequency-selective surfaces is the spatial filter formed by periodic array in two dimensions structure, realizes bandpass filtering or bandreject filtering to electromagnetic wave.The formation structure of frequency-selective surfaces is divided into open-work type (metallic plate periodically being offered the slotted eye of same shape and size) and patch-type (dielectric surface periodically attaches the metal unit of same shape and size), two class formation forms show as obvious band-pass filtering property and bandreject filtering characteristic respectively, all have important application at numerous areas such as communication, antenna, radars.
About frequency-selective surfaces, in basic theory and analog computation, and there is more research the design of frequency-selective surfaces and sign aspect, but are relatively short of about the research of processing method, and existing method is comparatively applicable to the larger material of rigidity, and cost is higher.As Chinese patent application 01010169471.7 discloses a kind of dual-band array antenna based on frequency-selective surfaces resonant element, can be applicable to navigator fix, satellite antenna and other are to antenna section height and the more sensitive application scenario of mass ratio; Chinese patent application 201110052236.6 devises the stealth material of a kind of radar and infrared compatibility, this stealth material is mainly made up of broad-band radar absorbers layer (glass fiber reinforced plastics composite material of glass fiber reinforcement) and infrared stealth functional layer (capacitive frequency-selective surfaces), wherein takes to print PCB technology and has prepared required frequency-selective surfaces; Chinese patent application 201110443884.4 discloses a kind of low-band frequency selective surface with minimized cell sizes, by the conducting strip in Design PCB plate upper and lower conductive layers, face between conducting strip---face coupling forms larger distribution capacity, obviously reduces resonant frequency.From existing patent analyses, designer takes multiple technologies development of new frequency-selective surfaces, especially composite construction, but is only limitted to rigid material, and ignores convenience and superiority that flexible fabric realizes frequency-selective surfaces feature.
Electromagnetic performance for textile material is studied, and morely concentrates on the aspects such as conduction, dielectric, antistatic, electromagnetic shielding, and less research its to electromagnetic selective permeability.With regard to process technology, designer often carries out top finish to textiles or becomes fabric by the fiber process with electro-magnetic screen function, reaches the electromagnetic object of bulk shielding, but does not carry out how to realize selective logical electromagnetic research.As Chinese patent application CN200910054882.9 utilizes the method for chemical silvering to form one deck silver on dacron surface, thus give fabric capability of electromagnetic shielding; Chinese patent application CN200910048743.5 utilizes the method for electroless copper to form one deck copper on dacron surface, thus gives fabric capability of electromagnetic shielding; Chinese patent 200810204134.X utilizes permalloy and takes yarns interwoven and makes fabric and realize electromagnetic shielding; The chemical-fibres filaments such as US Patent No. 19970943957 pairs of nylon carry out silver-plated electrically conductive filament yarn of making, and then adopt knitted structure to be made into the anti-radiation knitted thing of high connductivity.Be not difficult to find, above-mentioned prior art is all utilize certain manufacturing process to form bulk metal shielding construction, does not periodically conduct electricity flower pattern, can not realize being with electromagnetic wave that is logical or band resistance thoroughly to lead to characteristic.
Utility model content
The purpose of this utility model is to provide a kind of wave frequency and selects logical textiles thoroughly, overcomes the limitation that existing function solenoid textiles shortage He Ne laser leads to product thoroughly.
Wave frequency provided by the utility model selects logical textiles thoroughly, comprises basic unit and is located at least one deck periodically conductive pattern layer in described basic unit;
Above-mentioned wave frequency selects logical textiles thoroughly, and described basic unit is flexible fabric layer;
Described flexible fabric to be spun or multiple fiber blend is made by Single Fiber is pure by non-conductive textile material;
Described non-conductive textile material is at least one in cotton, fiber crops, hair, silk, terylene, PTT fiber, polybutylene terephthalate (PBT) fiber, polyamide fibre, acrylic fibers, superhigh molecular weight polyethylene fibers, polypropylene fibre, polyvinyl, glass fibre, aramid fiber, PSA fiber, viscose, acetate fibre and copper ammonia fibre.
The unit figure repeated arrangement that described periodicity conductive pattern layer is conducted electricity by regional area is formed.
Above-mentioned wave frequency selects logical textiles thoroughly, and described unit figure is following 1)-4) in any one:
1) center connecting-type figure, described center connecting-type figure is Jerusalem cross-shaped element;
2) annular element figure, described annular element figure is annulus, square ring or hexagonal rings etc.;
3) solid unit figure, described solid unit figure is rectangle, circle or polygon etc.;
4) combination of unit figure 1)-3).
The unit figure of described regional area conduction is made up of current-carrying part and non-conductive section, and its current-carrying part and non-conductive section can exchange.The unit figure of such as square-outside and round-inside can be that inner circular partially conductive, outside remainder are non-conductive; Also inner circular part can be exchanged into non-conductive, and outside remainder conduction.Being repeated to pile the frequency-selective surfaces after building by the former is patch-type, is repeated to pile that to build the frequency-selective surfaces that formed be open-work type by the latter.
The utility model wave frequency selects logical textiles thoroughly to prepare by following method: processed by localized metallic, the heap that repeats forming described unit pattern at the local location of described basic unit is built, forming frequency selects surface, thus has the logical or belt-resistance function of electromagnetism wavestrip.Described localized metallic processing method, can be that computer embroidery, electrically-conducting paint stamp, the laser ablation of metal forming, cloth are gold stamping, parcel plating, the preparation method such as local chemical plating or local magnetron sputtering.
The utility model utilizes the reasonable combination of textiles formed machining technique and local metalization processing techniques to carry out design frequency and selects logical textiles thoroughly, and band resistance or band passband rate can design, and have flexibility, deflection and lighting characteristic.Can be applicable to the product such as high-performance Radiation proof dress, battleficld command tent, and bilayer or sandwich construction can be adopted to carry out the logical or belt-resistance function of reinforcing tape.
Accompanying drawing explanation
Fig. 1 (a) is the schematic diagram of the logical textiles thoroughly of annulus patch-type He Ne laser in the utility model embodiment 1;
Fig. 1 (b) is the schematic diagram of the logical textiles thoroughly of annulus open-work type He Ne laser in the utility model embodiment 1;
Fig. 1 (c) is the filtering performance curve of the logical textiles thoroughly of two kinds of He Ne laser in the utility model embodiment 1;
Fig. 2 (a) is the schematic diagram of ring patch-type He Ne laser square in the utility model embodiment 2 logical textiles thoroughly;
Fig. 2 (b) is the schematic diagram of ring open-work type He Ne laser square in the utility model embodiment 2 logical textiles thoroughly;
Fig. 2 (c) is two kinds of He Ne laser logical textiles filtering performance curve thoroughly in the utility model embodiment 2;
Fig. 3 (a) is the logical textile surface schematic diagram thoroughly of cross patch-type He Ne laser in the utility model embodiment 3;
Fig. 3 (b) is the logical textile surface schematic diagram thoroughly of cross open-work type He Ne laser in the utility model embodiment 3;
Fig. 3 (c) is two kinds of He Ne laser logical textiles filtering performance curve thoroughly in the utility model embodiment 3.
In figure, each mark is as follows:
1 basic unit, 2 annular conductive units, 3 side's looped conductive element, 4 cross conductive units.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further, but the utility model is not limited to following examples.
Following embodiment adopts the localized metallic metallization processes of electrically-conducting paint stamp, and select tabby dacron to be basic unit, longitude and latitude yarn count is 389dtex/144f, and weft density is 234 × 210/10cm, and weight per square meter is 197g/m
2, choose annular, square annular and criss-cross periodicity conductive pattern respectively, and prepare the frequency-selective surfaces of patch-type and open-work type two kinds of forms for often kind of conductive pattern processing, design parameter is as shown in table 1.
The structural parameters of table 1 three kinds of conductive units (annular, side's annular and cross)
The concrete technology of the electrically-conducting paint stamp that the utility model is selected is as follows:
(1) printing technology is determined, modulation concentrator: utilize conventional COAT PRINTING technique, size mixing according to the ratio of 80g copper-clad silver powder coating particle, 350g adhesive 707,450g emulsion thickening A nation slurry, 50g urea, 25g crosslinking agent EH, 45g cold water.After tested, the electrical conductivity of electrocondution slurry is 5.2 × 10
6s/m.
(2) plain net plate-making, print conductive pattern: choose terylene thread screen cloth, according to the flower type structure of design, utilizing sensitizer stencil making method to make No. SP is the plain net of 42, selects net dynamic formula flat screen printing machine, install and screen adjustment and scraper, guarantee normal work, utilize rubber squeegee that printing paste is scraped slurry three times along fabric warp-wise or broadwise, the thickness controlling coating is 60 μm, electrocondution slurry is printed on fabric through flower version mesh, forms conductive pattern.
(3) cure fixation: respectively through multiple baking (drying on padding machine), decatize (102 DEG C, 5min, with vat ager), cure (130 DEG C, 3min) three operations, reinforce quality, and further tentering finished product.
Embodiment 1, annular He Ne laser be logical textiles thoroughly
According to frequency-selective surfaces Theoretical Design annular conductive unit (the space D x=Dy=12mm of array period, external diameter R is 5mm, internal diameter r is 3mm), above-mentioned coating printing technology is selected to carry out processing preparation, obtain the He Ne laser logical textiles thoroughly that two kinds of surfaces have periodically annulus pattern, its schematic diagram is as shown in Fig. 1 (a) He 1 (b), as known in the figure, the present embodiment He Ne laser thoroughly logical textiles comprises basic unit 1 and the periodicity conductive pattern layer be located in basic unit 1, and this periodicity conductive pattern layer is formed by annular conductive unit 2 repeated arrangement.
When electromagnetic wave vertical incidence, obtain two kinds of textiless to electromagnetic transmission coefficient curve, as shown in Fig. 1 (c).Can see, two curve resonant frequencies, at about 13GHz, have good complementarity.For annulus patch-type, transmission coefficient peak value is-43.35dB, and shield effectiveness reaches maximum; In 12.4GHz ~ 14.1GHz band limits, transmission coefficient is less than-10dB, and band resistance effect is better, and in other frequency ranges, then shows transmission coefficient comparatively large, and shield effectiveness is less.For annulus open-work type, transmission coefficient peak value is-0.028dB, and almost without any shielding action, electromagnetic wave can all pass through; In 12.3GHz ~ 13.7GHz band limits, transmission coefficient is greater than-10dB, and the logical effect of band is better, and in other frequency ranges, then shows transmission coefficient less, and shield effectiveness is larger.Two kinds of He Ne laser thoroughly logical textiles present the characteristic of bandstop filter and bandpass filter respectively, have very large application prospect at product scopes such as radar wave detection, battleficld command tent, specific band microwave weapons.
Embodiment 2, the annular He Ne laser in side logical textiles thoroughly
According to frequency-selective surfaces Theoretical Design side looped conductive element (the space D x=Dy=20mm of array period, outer length of side a is 13mm, interior side length b is 6mm), above-mentioned coating printing technology is selected to carry out processing preparation, obtain the He Ne laser logical textiles thoroughly that two kinds of surfaces have periodicity side's ring patterns, its schematic diagram is as shown in Fig. 2 (a) He 2 (b), as known in the figure, the present embodiment He Ne laser thoroughly logical textiles comprises basic unit 1 and the periodicity conductive pattern layer be located in basic unit 1, this periodicity conductive pattern layer is formed by square looped conductive element 3 repeated arrangement.
When electromagnetic wave vertical incidence, obtain two kinds of textiless to electromagnetic transmission coefficient curve, as shown in Fig. 2 (c).Can see, two curve resonant frequencies, at about 9.5GHz, have good complementarity.For square ring patch-type, transmission coefficient peak value is-38.22dB, and shield effectiveness reaches maximum; In 8.8GHz ~ 10.4GHz band limits, transmission coefficient is less than-10dB, and band resistance effect is better, and in other frequency ranges, then shows transmission coefficient comparatively large, and shield effectiveness is less.For square ring open-work type, transmission coefficient peak value is-0.078dB, and almost without any shielding action, electromagnetic wave can all pass through; In 8.9GHz ~ 10.3GHz band limits, transmission coefficient is greater than-10dB, and the logical effect of band is better, and in other frequency ranges, then shows transmission coefficient less, and shield effectiveness is larger.Two kinds of He Ne laser thoroughly logical textiles present the characteristic of bandstop filter and bandpass filter respectively, have very large application prospect at product scopes such as radar wave detection, battleficld command tent, specific band microwave weapons.
Embodiment 3, cross He Ne laser be logical textiles thoroughly
According to frequency-selective surfaces Theoretical Design cross conductive unit (the space D x=Dy=20mm of array period, long c is 16mm, wide d is 8mm), above-mentioned coating printing technology is selected to carry out processing preparation, obtain the He Ne laser logical textiles thoroughly that two kinds of surfaces have cycle cross pattern, its schematic diagram is as shown in Fig. 3 (a) He 3 (b), as known in the figure, the present embodiment He Ne laser thoroughly logical textiles comprises basic unit 1 and the periodicity conductive pattern layer be located in basic unit 1, and this periodicity conductive pattern layer is formed by cross conductive unit 4 repeated arrangement.
When electromagnetic wave vertical incidence, obtain two kinds of textiless to electromagnetic transmission coefficient curve, as shown in Fig. 3 (c).Can see, two curve resonant frequencies, at about 9.8GHz, have good complementarity.For cross patch-type, transmission coefficient peak value is-35.07dB, and shield effectiveness reaches maximum; In 8.9GHz ~ 10.5GHz band limits, transmission coefficient is less than-10dB, and band resistance effect is better, and in other frequency ranges, then shows transmission coefficient comparatively large, and shield effectiveness is less.For cross open-work type, transmission coefficient peak value is-0.419dB, and almost without any shielding action, electromagnetic wave can all pass through; In 9.0GHz ~ 10.5GHz band limits, transmission coefficient is greater than-10dB, and the logical effect of band is better, and in other frequency ranges, then shows transmission coefficient less, and shield effectiveness is larger.Two kinds of He Ne laser thoroughly logical textiles present the characteristic of bandstop filter and bandpass filter respectively, have very large application prospect at product scopes such as radar wave detection, battleficld command tent, specific band microwave weapons.
From above-described embodiment, the textiles of six kinds of different cycles conductive patterns all presents comparatively ideal He Ne laser logical characteristic thoroughly, just resonance frequency is slightly different, this is because the shape and size difference to some extent of the cycle conductive pattern of fabric face, the textiles with target resonance frequency can be obtained by optimal design.
The utility model wave frequency selects logical textiles thoroughly, and comparatively ripe process technology design can be utilized to produce, and flexibly freely, flower pattern is various; This textiles has light weight, softness, flexible characteristic, makes it have potential using value at numerous areas, as can be used for the design and development of the products such as high-performance Radiation proof dress, battleficld command tent, flexible filter.
Claims (6)
1. wave frequency selects a logical textiles thoroughly, it is characterized in that: described textiles comprises basic unit and is located at least one deck periodically conductive pattern layer in described basic unit.
2. wave frequency according to claim 1 selects logical textiles thoroughly, it is characterized in that: described basic unit is flexible fabric layer.
3. wave frequency according to claim 2 selects logical textiles thoroughly, it is characterized in that: described flexible fabric layer to be spun or multiple fiber blend is made by Single Fiber is pure by non-conductive textile material;
Described non-conductive textile material is at least one in cotton, fiber crops, hair, silk, terylene, PTT fiber, polybutylene terephthalate (PBT) fiber, polyamide fibre, acrylic fibers, superhigh molecular weight polyethylene fibers, polypropylene fibre, polyvinyl, glass fibre, aramid fiber, PSA fiber, viscose, acetate fibre and copper ammonia fibre.
4. wave frequency according to claim 1 selects logical textiles thoroughly, it is characterized in that: the unit figure repeated arrangement that described periodicity conductive pattern layer is conducted electricity by regional area is formed.
5. wave frequency according to claim 4 selects logical textiles thoroughly, and its feature is from being: described unit figure is following 1)-4) in any one:
1) center connecting-type figure, described center connecting-type figure is Jerusalem cross-shaped element;
2) annular element figure, described annular element figure is annulus, square ring or hexagonal rings;
3) solid unit figure, described solid unit figure is rectangle, circle or polygon;
4) combination of unit figure 1)-3).
6. wave frequency according to claim 5 selects logical textiles thoroughly, it is characterized in that: the unit figure of described regional area conduction is made up of current-carrying part and non-conductive section.
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| CN106245184A (en) * | 2015-12-22 | 2016-12-21 | 中国人民解放军总后勤部军需装备研究所 | There is frequency D periodic structure fabric selecting transparency and preparation method thereof |
| TWI609638B (en) * | 2016-03-17 | 2018-01-01 | 財團法人工業技術研究院 | Physiology detecting garment, physiology detecting monitoring system and manufaturcing method of textile antenna |
| CN107829192A (en) * | 2017-11-30 | 2018-03-23 | ***后勤保障部军需装备研究所 | Based on center connection shape periodic structure textile, textile preparation method and application |
| CN107938097A (en) * | 2017-11-30 | 2018-04-20 | 北京吉克防护科技有限公司 | Textile based on cyclic periodic structure, and preparation method and application of textile |
| WO2020195493A1 (en) * | 2019-03-28 | 2020-10-01 | 豊田合成株式会社 | Radio wave transmissive cover |
| CN111976250A (en) * | 2020-07-02 | 2020-11-24 | 浙江理工大学 | Electromagnetic shielding fabric with frequency selection characteristic based on embroidery structure and preparation method |
| CN112095351A (en) * | 2020-08-25 | 2020-12-18 | 东华大学 | Frequency band-adjustable integrated multilayer wave-absorbing planar fabric and preparation method thereof |
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| CN106245184A (en) * | 2015-12-22 | 2016-12-21 | 中国人民解放军总后勤部军需装备研究所 | There is frequency D periodic structure fabric selecting transparency and preparation method thereof |
| TWI609638B (en) * | 2016-03-17 | 2018-01-01 | 財團法人工業技術研究院 | Physiology detecting garment, physiology detecting monitoring system and manufaturcing method of textile antenna |
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| CN107829192A (en) * | 2017-11-30 | 2018-03-23 | ***后勤保障部军需装备研究所 | Based on center connection shape periodic structure textile, textile preparation method and application |
| CN107938097A (en) * | 2017-11-30 | 2018-04-20 | 北京吉克防护科技有限公司 | Textile based on cyclic periodic structure, and preparation method and application of textile |
| CN107829192B (en) * | 2017-11-30 | 2024-03-08 | ***后勤保障部军需装备研究所 | Textile based on central connection type periodic structure, textile preparation method and application |
| JP2020165691A (en) * | 2019-03-28 | 2020-10-08 | 豊田合成株式会社 | Radio wave transmission cover |
| WO2020195493A1 (en) * | 2019-03-28 | 2020-10-01 | 豊田合成株式会社 | Radio wave transmissive cover |
| CN111976250A (en) * | 2020-07-02 | 2020-11-24 | 浙江理工大学 | Electromagnetic shielding fabric with frequency selection characteristic based on embroidery structure and preparation method |
| CN112095351A (en) * | 2020-08-25 | 2020-12-18 | 东华大学 | Frequency band-adjustable integrated multilayer wave-absorbing planar fabric and preparation method thereof |
| CN112095351B (en) * | 2020-08-25 | 2021-11-12 | 东华大学 | Frequency band-adjustable integrated multilayer wave-absorbing planar fabric and preparation method thereof |
| CN112436286A (en) * | 2020-11-12 | 2021-03-02 | 军事科学院***工程研究院军需工程技术研究所 | Frequency band adjustable flexible multilayer wave-absorbing material and preparation method thereof |
| CN113619212A (en) * | 2021-07-13 | 2021-11-09 | 中国科学院光电技术研究所 | High-strength flexible fabric wave-absorbing material and preparation method thereof |
| CN113619212B (en) * | 2021-07-13 | 2024-02-02 | 中国科学院光电技术研究所 | High-strength flexible fabric wave-absorbing material and preparation method thereof |
| CN115161839A (en) * | 2022-02-25 | 2022-10-11 | 浙江理工大学 | Manufacturing method of electromagnetic shielding and infrared-proof detection fabric based on clipping process, product and application thereof |
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