CN104264502A - Electromagnetic wave frequency selective pass-through textile and preparation method thereof - Google Patents
Electromagnetic wave frequency selective pass-through textile and preparation method thereof Download PDFInfo
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- CN104264502A CN104264502A CN201410473103.XA CN201410473103A CN104264502A CN 104264502 A CN104264502 A CN 104264502A CN 201410473103 A CN201410473103 A CN 201410473103A CN 104264502 A CN104264502 A CN 104264502A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06Q—DECORATING TEXTILES
- D06Q1/00—Decorating textiles
- D06Q1/04—Decorating textiles by metallising
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C17/00—Embroidered or tufted products; Base fabrics specially adapted for embroidered work; Inserts for producing surface irregularities in embroidered products
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses an electromagnetic wave frequency selective pass-through textile and a preparation method thereof. The preparation method comprises the following steps: (1) designing unit patterns for electrical conduction of a local region, wherein the unit patterns are repeatedly arranged to form a frequency selection surface; (2) taking a soft textile as a base material and forming the unit patterns on the surface of the base material in local positions by virtue of a surface local metallizing processing method, wherein the unit patterns are repeatedly arranged to form the frequency selection surface, thereby finishing the preparation of the electromagnetic wave frequency selective pass-through textile. The electromagnetic wave frequency selective pass-through textile comprises one single layer or a plurality of layers of frequency selection surfaces, wherein the plurality of layers of frequency selection surfaces are capable of enhancing a band-pass or band elimination function and optimizing the frequency selective pass-through characteristic to electromagnetic waves. The electromagnetic wave frequency selective pass-through textile can be used for simply and conveniently preparing a spatial filter device having the electromagnetic wave frequency selective pass-through function, and the prepared spatial filter device can be flexible, rollable and light; the electromagnetic wave frequency selective pass-through textile can be applied to products such as high-performance radiation protection clothes and battlefield command tents.
Description
Technical field
The present invention relates to the preparation method that wave frequency selects logical textiles thoroughly, belong to Technical Textiles field.
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 201010169471.7 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.
Summary of the invention
The object of this invention is to provide the preparation method of the selective logical textiles of wave frequency, overcome the limitation that existing function solenoid textiles shortage He Ne laser leads to product thoroughly.
The principle of preparation method of the present invention utilizes textiles formed composite technique and local metalization processing techniques, normal flexible textiles is formed electromagnetism wavestrip lead to or belt-resistance function, realize wide spectrum electromagnetic shielding or thoroughly logical while, form communication or intercept window (such as can design and can thoroughly lead to the mobile phone electromagnetic wave of 900MHz/1800MHz, and the flexible fabric of shielding is implemented to the electromagnetic wave of other frequency range) as required.
Wave frequency provided by the present invention selects the preparation method of logical textiles thoroughly, comprises the steps:
(1) unit figure of design local zone conducts current, the repeated arrangement forming frequency of described unit figure selects surface, i.e. periodic structure pattern;
Described unit figure is following 1)-4) in any one:
1) center connecting-type unit figure, described center connecting-type unit figure is three pole subelements, anchor shape unit or Jerusalem cross-shaped element etc.;
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).
(2) take flexible fabric as base material, by surperficial localized metallic processing method, form described unit figure at the local location of described substrate surface, the repeated arrangement forming frequency of described unit figure selects surface, namely completes the preparation that described wave frequency selects logical textiles thoroughly.
In above-mentioned preparation method, in step (1), the unit figure of described regional area conduction, 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.
In above-mentioned preparation method, in step (1), the design of described unit figure is the resonance theory according to frequency-selective surfaces, the i.e. relation of the relation of open-work type repetitive figure and resonant frequency, patch-type repetitive figure and resonant frequency, according to the band of target frequency, logical or band resistance requirement, adopts figure and the size of the pattern of HFSS design software determination open-work type conductive unit or patch-type conductive unit.
In above-mentioned preparation method, in step (2), described flexible fabric to be spun or multiple fiber blend is made by Single Fiber is pure by non-conductive conventional textile material;
Described non-conductive conventional 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.
In above-mentioned preparation method, in step (2), described surperficial localized metallic processing method be following any one:
1) conductive fiber computer embroidery
Specifically with computerized emboridering machine by conductive fiber (such as silver-plated polyamide fibre electrically conductive filament, conductive sewing thread, containing stainless steel blended yarn, plain conductor etc.) according to the design of described frequency-selective surfaces pattern, the method in position adopting conductive fiber to pile up realizes localized metallic, realizes the He Ne laser logical characteristic thoroughly of textiles.
2) conductive powder body COAT PRINTING;
The printing cylinder of rotary screen printing machines is specifically made according to the design of described frequency-selective surfaces, or the printing screen of flat screen printing machine, or the printing screen of hand printing equipment, by the conductive powder bodies such as copper powder, silver powder, aluminium powder or copper-clad silver powder with 10 ~ 40% ratio be mixed in printing coating, gain in weight is 10 ~ 30g/m
2, print cycle flower pattern thus, realize the He Ne laser logical characteristic thoroughly of textiles.
3) mask means carries out the local sputtering of metallic element to fabric;
Specifically according to described frequency-selective surfaces design and make mask plate, part is carried out to fabric and covers and block, adopt the technology such as magnetron sputtering, make metallic element be deposited as 1 ~ 10g/m in fabric substrate upper part
2conducting film, thus form wave frequency and select thoroughly logical textiles.
4) laser cutting of conductor sheet, described conductor sheet is metal forming, metallization macromolecule membrane or metallized fabrics;
Specifically according to the design of cycle flower pattern, utilize laser cutting technique, selective cutting is carried out to 0.05 ~ 0.2mm metallic film or paillon foil, full coated metal fabric, or the conductive pattern obtained through laser cutting is compound on textile carrier, form wave frequency and select logical textiles thoroughly.
5) the computer engraving machine of conductor sheet is carved and is painted, and described conductor sheet is metal forming, metallization macromolecule membrane or metallized fabrics;
Specifically according to the design of cycle flower pattern, utilize computer to carve and paint technology, the sheet material with 0.05 ~ 0.2mm metal level is cut, form wave frequency and select logical textiles thoroughly.
6) orange cold foil cloth is gold stamping, comprises directly gold stamping and gold stamping two kinds of techniques indirectly.Described orange cold foil also known as gold stamping paper tinsel, containing PET basal layer, peel ply, color layers, electrodeposited coating and adhesive layer, with fabric closely connected and heat pressurize after adhesive layer can bond in adjacent objects, and can be separated at peel ply place.
Direct gilding technology is the design according to cycle flower pattern, and relief pattern scribed by gilding press pressure roller, and cloth and orange cold foil touch, at pressure 2 ~ 6kg/cm by the projection of pressure roller pattern
2, roller temperature 120 ~ 190 DEG C, pressing time 0.2 ~ 10s processing conditions under, gold stamping paper tinsel is transferred on textiles by the pattern of design, and the He Ne laser realizing textiles by electrodeposited coating is wherein logical characteristic thoroughly; Indirect gilding technology is the design according to cycle flower pattern, make the half tone (photoresists thickness is 60 ~ 80 μm) of 33 ~ 40T, the gold stamping slurry of wire mark, cloth forms layout, toast 5 ~ 10 minutes with 150 DEG C in baking box after having printed slurry, gold stamping slurry is parched, and then adopting flat ironing process, gold stamping (blocking point/time controling is 140 ~ 160 DEG C/about 15 ~ 20s, and pressure of hot stamping is at 4kg/cm
2above), or roller ironing process (blocking point reaches about 180 DEG C, the hardness of silica gel roller preferably 90), orange cold foil electrodeposited coating can be transferred to above gold stamping slurry, orange cold foil of tearing, and just can obtain He Ne laser logical textiles thoroughly.
The present invention still further provides the wave frequency prepared by said method and selects logical textiles thoroughly.
Described wave frequency selects logical textiles thoroughly to comprise single or multiple lift frequency-selective surfaces, and Multilayer Frequency-Selective Surfaces can reinforcing tape be led to or belt-resistance function, optimizes electromagnetic He Ne laser logical characteristic thoroughly.
Tool of the present invention has the following advantages:
1, the space filtering device with the selective logical function of wave frequency can be prepared easily;
2, can the flexibility of implementation space filtering device, deflection and lighting, can be applicable to the product such as high-performance Radiation proof dress, battleficld command tent;
3, utilize above-mentioned process technology, the wave frequency that can obtain two kinds of complementary structures selects logical textiles thoroughly, and bilayer or sandwich construction reinforcing tape can be adopted to lead to or belt-resistance function.
Accompanying drawing explanation
Fig. 1 (a) is the annulus patch-type He Ne laser logical textile surface aspect graph thoroughly that in the embodiment of the present invention 1, computer embroidery is formed;
Fig. 1 (b) is the annulus open-work type He Ne laser logical textile surface aspect graph thoroughly that in the embodiment of the present invention 1, computer embroidery is formed;
Fig. 1 (c) is two kinds of He Ne laser logical textiles filtering performance curve thoroughly in the embodiment of the present invention 1;
Fig. 2 (a) is the annulus patch-type He Ne laser logical textile surface aspect graph thoroughly that in the embodiment of the present invention 2, COAT PRINTING is formed;
Fig. 2 (b) is the annulus open-work type He Ne laser logical textile surface aspect graph thoroughly that in the embodiment of the present invention 2, COAT PRINTING is formed;
Fig. 2 (c) is two kinds of He Ne laser logical textiles filtering performance curve thoroughly in the embodiment of the present invention 2;
Fig. 3 (a) is the annulus patch-type He Ne laser logical textile surface aspect graph thoroughly that in the embodiment of the present invention 3, cloth gold stamping (direct gilding technology) is formed;
Fig. 3 (b) is the annulus open-work type He Ne laser logical textile surface aspect graph thoroughly that in the embodiment of the present invention 3, cloth gold stamping (direct gilding technology) is formed;
Fig. 3 (c) is two kinds of He Ne laser logical textiles filtering performance curve thoroughly in the embodiment of the present invention 3.
Fig. 4 (a) is the annulus patch-type He Ne laser logical textile surface aspect graph thoroughly that in the embodiment of the present invention 4, cloth gold stamping (indirect gilding technology) is formed;
Fig. 4 (b) is the annulus open-work type He Ne laser logical textile surface aspect graph thoroughly that in the embodiment of the present invention 4, cloth gold stamping (indirect gilding technology) is formed;
Fig. 4 (c) is two kinds of He Ne laser logical textiles filtering performance curve thoroughly in the embodiment of the present invention 4.
Detailed description of the invention
The experimental technique used in following embodiment if no special instructions, is conventional method.
Material used in following embodiment, reagent etc., if no special instructions, all can obtain from commercial channels.
In embodiment listed by the present invention, adopt computer embroidery, COAT PRINTING and two kinds of cloth gilding technologies to form cycle conductive pattern at fabric face respectively, often kind of technique all prepares two kinds of complementary structure He Ne laser logical textiles thoroughly.
The base material of metal fibre computer embroidery process selection is that hair washs blending serge, and it is 70/30 that hair washs blending rate, and longitude and latitude yarn count is 179dtex × 2 (i.e. 56Nm/2), and thread count is 318 × 251/10cm, and weight per square meter is 220g/m
2; And electrically-conducting paint printing technology and two kinds of cloth gilding technologies adopt tabby dacron to be base material (dyeing slightly different), longitude and latitude yarn count is 389dtex/144f, and weft density is 234 × 210/10cm, and weight per square meter is 197g/m
2.Conductive pattern is the space D X=DY=12mm in circular ring structure, circle ring array cycle, annulus external diameter R=5mm wherein, internal diameter r=3mm.
The base material of metal fibre computer embroidery process selection is that hair is washed blending serge (it is 70/30 that hair washs blending rate, and yarn count is 160D × 2/160D × 2, and weft density is 371 × 345, and grammes per square metre is 250g/m
2, fabric thickness is 8mm, and dielectric coefficient is 2.8); And electrically-conducting paint printing technology and orange cold foil caloric transfer printing technology adopt tabby dacron to be that (yarn count is 100D × 100D to base material, and weft density is 106 × 106, and grammes per square metre is 150g/m
2, fabric thickness is 5mm, and dielectric coefficient is 2.2).Conductive pattern is the space D X=DY=12mm in circular ring structure, circle ring array cycle, annulus external diameter R=5mm, internal diameter r=3mm.
Embodiment 1, electrically conductive filament computer embroidery prepare He Ne laser logical textiles thoroughly
(1) embroidery raw material and computerized emboridering machine is selected: silver-plated continuous synthetic fibre conductive sewing thread selected by upper thread, and (specification: silver-plated front 70dtex/4, silver-plated rear 80dtex/4, electrical conductivity is 8.8 × 10
6s/m), bottom line selects polyster fibre sewing thread (specification is 106dtex × 2), adopts 920 type Palintest embroidery machines to embroider.
(2) beat version according to patterning design: according to required cycle annulus flower pattern, in computer embroidery designs system, carry out designs, preserve file to floppy disk, insert embroidery machine, in order to instruct or to excite embroidery machine and tabouret to do corresponding various motion.
(3) skill of handling needles and embroidery density is selected: select the neat pin skill of handling needles to carry out pattern embroidery, the pin number controlling each flower pattern unit is 48350 pins, and embroidery rotating speed is 400rpm, and adjustment bottom line and tension force of facial suture, guarantee that the style embroidered out is clean and tidy and indeformable.
(4) embroidery sample preparation: according to the flower pattern file set and technological parameter, carry out the computer embroidery of conductive fiber, is formed on flat textile product surface and periodically conducts electricity flower pattern.
Logical textile surface form is as shown in Fig. 1 (a) He 1 (b) thoroughly for two kinds of He Ne laser that the present embodiment is formed by computer embroidery, and filtering performance curve is as shown in Fig. 1 (c).
He Ne laser logical textiles thoroughly prepared by embodiment 2, electrically-conducting paint stamp
(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 circular ring 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 along fabric warp-wise or broadwise, electrocondution slurry is printed on fabric through flower version mesh, form conductive pattern, in whole process, control paint thickness is 60 μm.
(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.
Logical textile surface form is as shown in Fig. 2 (a) He 2 (b) thoroughly for two kinds of He Ne laser that the present embodiment is formed by COAT PRINTING, and filtering performance curve is as shown in Fig. 2 (c).
Embodiment 3, cloth are gold stamping prepares He Ne laser logical textiles (direct gilding technology) thoroughly
(1) pressure roller is scribed: according to the circular ring structure of design, relief pattern scribed by gilding press pressure roller, and the projection of pressure roller pattern is consistent with the metal level in circular ring structure.
(2) heat transfer is gold stamping: the orange cold foil choosing commercially available 16 μm of thickness, by its carrier thin film towards upper, transfer layer downwards and cloth substrate be close to, circle is adopted to flatten hot stamping process, setting heating-up temperature is 160 DEG C, and gilding press pressure roller rotates and presses down, and Stress control is 5kg/cm
2, workbench drives fabric transverse shifting of undertaking the printing of to complete transfer printing, and pressure roller is lifted, and winding roll is according to certain coil paper time coil paper.In the process, the length choosing fabric is 50cm, and the translational speed of setting workbench is 0.05m/s, and namely the thermoprint time needs about 10s.Electrodeposited coating in gold stamping paper tinsel is transferred on textiles by the pattern of design, after thermoprint, tears orange cold foil off at ambient temperature along grain cross, obtains the textiles being printed on periodically conductive structure unit.
Logical textile surface form is as shown in Fig. 3 (a) He 3 (b) thoroughly for two kinds of He Ne laser that the present embodiment is formed by cloth gold stamping (direct gilding technology), and filtering performance curve is as shown in Fig. 3 (c).
Embodiment 4, cloth are gold stamping prepares He Ne laser logical textiles (indirect gilding technology) thoroughly
(1) heat transfer rubber cement is selected: choose and be exclusively used in the gold stamping commercially available slurry YJ-15 of textiles, the gold stamping slurry of 100% directly uses.
(2) screen pattern: choose terylene thread screen cloth, according to the circular ring structure of design, sensitizer stencil making method is utilized to make 80 order screen printing formes, mix up half tone, stock, the spacing of bearing ink pad and position, pour gold stamping slurry into half tone, manual glue is scraped and scrape 3 times on half tone, and heat transfer rubber cement is expressed on fabric from the mesh of areas, thus forms Periodic Building Unit.After printing, carry out case under the primary product obtained being placed in 150 DEG C of temperature and dry 8 minutes, make gold stamping slurry dry.
(3) heat transfer is gold stamping, form conductive pattern: the special foil paper of boiling hot cloth choosing commercially available 16 μm of thickness, is upwards placed on its coloured one side on printed gold stamping slurry, (it is 150 DEG C that temperature controls to adopt platen hot stamping process, time is 18s, and pressure is 4kg/cm
2) carry out gold stamping processing.After printing, tear orange cold foil off along fabric warp-wise at ambient temperature, obtain the textiles being printed on periodically conductive structure unit.
Logical textile surface form is as shown in Fig. 4 (a) He 4 (b) thoroughly for two kinds of He Ne laser that the present embodiment is formed by cloth gold stamping (indirect gilding technology), and filtering performance curve is as shown in Fig. 4 (c).
From above-mentioned 4 embodiments, for same flower pattern, adopt different processing methods, embroidered at fabric face, be coated with print or thermoprint periodic conductive ring structure and complementary structure thereof, obtained wave frequency selects logical textiles thoroughly.During electromagnetic wave vertical incidence, obtain the transmission coefficient curve that four kinds of processing methods are corresponding, respectively as shown in Fig. 1 (c), Fig. 2 (c), Fig. 3 (c) He Fig. 4 (c).From four figure, the resonant frequency of the textiles that computer embroidery technique obtains is at about 11.8GHz, and the textiles that electrically-conducting paint stamp and two kinds of cloth gilding technologies obtain, resonant frequency is at about 13GHz, and this is because the performance difference of two kinds of fabric substrate causes.For four kinds of annulus patch-type He Ne laser logical textiles thoroughly,-10dB is less than respectively at 11.2GHz ~ 12.9GHz frequency range (computer embroidery technique), 12.4GHz ~ 14.1GHz frequency range (electrically-conducting paint printing technology) and 11.8GHz ~ 13.9GHz frequency range (two kinds of cloth gilding technologies) transmission coefficient, band resistance effect is better, and comparatively large at other frequency range transmission coefficients, shield effectiveness is lower; Peak value corresponding to resonance frequency place is respectively-43.42dB ,-40.17dB, and-38.42dB and-34.42dB, exists difference, and this is due to used conduction floss silk, electrically-conducting paint, gold stamping paper tinsel imperfectly conduting metal and electric conductivity exists different causing.For four kinds of annulus open-work type He Ne laser logical textiles thoroughly, in corresponding frequency range, transmission coefficient is greater than-10dB substantially, and the logical effect of band is better, and less at other frequency range transmission coefficients, and shield effectiveness is larger; The peak value at resonance frequency place is respectively-0.045dB ,-0.028dB, and-0.13dB and-0.142dB, can make the electromagnetic wave of neighbouring frequency completely thoroughly lead to substantially.Analyze arbitrary figure curve known, the transmission coefficient curve of two kinds of He Ne laser logical textiles thoroughly has good complementarity, and resonant frequency is consistent and direction of a curve is contrary, presents the characteristic of bandstop filter and bandpass filter respectively.
In sum, the present invention utilizes textiles forming technology and local metalization processing techniques to select logical textiles thoroughly for wave frequency, the spatial filter of flexible light weight can be obtained, in fields such as radar wave detection, battleficld command tent, specific band microwave weapons, there is potential using value.
Claims (6)
1. wave frequency selects the preparation method of logical textiles thoroughly, comprises the steps:
(1) unit figure of design local zone conducts current, the repeated arrangement forming frequency of described unit figure selects surface;
Described unit figure is following 1)-4) in any one:
1) center connecting-type unit figure, described center connecting-type unit figure is three pole subelements, anchor shape unit or 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);
(2) take flexible fabric as base material, by surperficial localized metallic processing method, form described unit figure at the local location of described substrate surface, the repeated arrangement forming frequency of described unit figure selects surface, namely completes the preparation that described wave frequency selects logical textiles thoroughly.
2. preparation method according to claim 1, it is characterized in that: in step (1), the design of described unit figure is the resonance theory according to frequency-selective surfaces, according to the band of target frequency, logical or band resistance requirement, adopts figure and the size of the pattern of HFSS design software determination open-work type conductive unit or patch-type conductive unit.
3. preparation method according to claim 1 and 2, is characterized in that: in step (2), and described flexible fabric to be spun or multiple fiber blend is made by Single Fiber is pure by non-conductive conventional textile material.
Described non-conductive conventional 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. the preparation method according to any one of claims 1 to 3, is characterized in that: in step (2), described surperficial localized metallic processing method be following any one:
1) conductive fiber computer embroidery;
2) conductive powder body coating stamp;
3) mask means carries out the local sputtering of metallic element to fabric;
4) laser cutting of conductor sheet, described conductor sheet is metal forming, metallization macromolecule membrane or metallized fabrics;
5) the computer engraving machine of conductor sheet is carved and is painted, and described conductor sheet is metal forming, metallization macromolecule membrane or metallized fabrics;
6) preparation method that cloth is gold stamping.
5. the wave frequency that prepared by method according to any one of claim 1-4 selects logical textiles thoroughly.
6. wave frequency according to claim 5 selects logical textiles thoroughly, it is characterized in that: described wave frequency selects logical textiles thoroughly to comprise single or multiple lift frequency-selective surfaces.
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| CN106811988A (en) * | 2015-11-30 | 2017-06-09 | 东华大学 | Frequency selection stereo fabric based on cut velvet and looped pile periodic structure |
| CN107829192A (en) * | 2017-11-30 | 2018-03-23 | 中央军委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 |
| CN107829193A (en) * | 2017-11-30 | 2018-03-23 | 中央军委后勤保障部军需装备研究所 | The frequency selection textile of X-band communication, the preparation method and application of textile |
| 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 |
| CN108251779A (en) * | 2018-01-08 | 2018-07-06 | 东莞市联洲知识产权运营管理有限公司 | A kind of metal coating modified high-strength conductive spinning product based on plasma spraying technology |
| CN111254558A (en) * | 2020-02-10 | 2020-06-09 | 江西服装学院 | Seamless local knitting method for intelligent clothes |
| 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 |
| CN112436286A (en) * | 2020-11-12 | 2021-03-02 | 军事科学院系统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 |
| CN112864630A (en) * | 2021-01-13 | 2021-05-28 | 军事科学院系统工程研究院军需工程技术研究所 | Extensible tunable frequency selection fabric and preparation method thereof |
| CN112952394A (en) * | 2021-02-09 | 2021-06-11 | 中天通信技术有限公司 | Frequency selective surface structure and manufacturing method thereof, and antenna cover and manufacturing 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 |
| CN115339189A (en) * | 2022-07-21 | 2022-11-15 | 东华大学 | Flexible broadband wave-absorbing fabric and preparation method thereof |
| CN115891310A (en) * | 2022-11-09 | 2023-04-04 | 武汉纺织大学 | Fiber embroidery broadband wave-absorbing metamaterial and preparation method thereof |
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| CN106319726A (en) * | 2015-07-03 | 2017-01-11 | 金东焕 | Fabric member for shielding harmful electromagnetic waves and method for producing same |
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| CN111254558A (en) * | 2020-02-10 | 2020-06-09 | 江西服装学院 | Seamless local knitting method for intelligent clothes |
| 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 |
| 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 |
| 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 |
| CN112436286A (en) * | 2020-11-12 | 2021-03-02 | 军事科学院系统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 |
| CN112436286B (en) * | 2020-11-12 | 2022-07-19 | 军事科学院系统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 |
| CN112864630A (en) * | 2021-01-13 | 2021-05-28 | 军事科学院系统工程研究院军需工程技术研究所 | Extensible tunable frequency selection fabric and preparation method thereof |
| CN112952394A (en) * | 2021-02-09 | 2021-06-11 | 中天通信技术有限公司 | Frequency selective surface structure and manufacturing method thereof, and antenna cover and manufacturing 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 |
| CN115339189A (en) * | 2022-07-21 | 2022-11-15 | 东华大学 | Flexible broadband wave-absorbing fabric and preparation method thereof |
| CN115891310A (en) * | 2022-11-09 | 2023-04-04 | 武汉纺织大学 | Fiber embroidery broadband wave-absorbing metamaterial and preparation method thereof |
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