[0041] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0042] A type of open resonant ring electromagnetic shielding multilayer composite fabric, such as figure 1 As shown, including the front layer 1, at least one intermediate absorbing layer 3 and the on-plane layer 2, the front layer 1 is electromagnetic wave incident layer, and the intermediate absorbing layer 3 is electromagnetic wave reflective layer. The frequency band electromagnetic wave absorption function is more than -5dB, such as the electromagnetic wave reflectance, such as figure 2 As shown, the intermediate absorbing layer 3 is arranged in a plurality of open resonance ring 8, and the plurality of open resonance loops 8 are adhered to between the front layer 1 and the back layer 2 by bonding.
[0043] The front layer 1 is a normal fabric or a lower shielded reflective fabric, and the electromagnetic shielding performance is between 0-30 dB, which can make electromagnetic waves throughout the electromagnetic wave, and has a certain outward reflection ability.
[0044] The front layer 1 is a stainless steel fiber, silver plated fiber, a blended fabric of copper-plated nickel fibers, a natural fiber fabric, a chemical fiber fabric.
[0045] The opposite layer 2 is high-shielded product fabric, and the electromagnetic shielding performance is between 30-100 dB, and the back layer 2 is a stainless steel fiber, silver plated fiber, copper-plated nickel fiber blend or pure spinning and metal coating fabric, a high reflective electromagnetic shielding fabric It is configured to be reflected by the electromagnetic wave transmitted from the intermediate layer to be reflected back, thereby being absorbed again by the intermediate layer.
[0046] Each of the opening resonance ring 8 includes an outer ring 5 and an inner ring 4, an outer ring 4, and an outer ring 5, and an inner ring 4, respectively, an outer ring 5, and an inner ring 4, respectively, and an outer ring 5 and an inner ring 4, respectively. The outer ring gap 7 and the inner ring lattice 6 are located opposite and relative positions.
[0047] like image 3 As shown, the outer ring 5 and the inner ring 4 use a conductive coating film or a conductive yarn or a metal filament to awardly having an opening circular or elliptical or rectangular 9 or a plurality of open resonances. The ring has different frequency and wide absorbing properties, such as Figure 4 As shown, by regulating parameters such as the type, quantity, size, and distribution state of the type opening resonance ring in the intermediate absorbing layer, the single-layer intermediate absorbing layer can have different broadband absorbing properties. When designing multiple intermediate absorbing layers, if Figure 4 Indicated. The first intermediate layer 11 and the second layer intermediate layer 12 can improve the wide frequency range of the overall intermediate absorbing layer.
[0048] Another technical solution employed by the present invention is a method for producing a multilayer composite fabric electromagnetic shielding multilayer composite fabric, and the above-mentioned open resonant ring electromagnetic shielding multilayer composite fabric, if the outer ring 5 and the inner ring 4 are employed The conductive yarn or metal filaments are implemented as follows:
[0049] Step 1, the front layer 1 is placed on the front surface of the front layer 1 facing upwardly onto the table, and the outer ring 5 material is pasted in the front layer in the shape of the outer ring 5 in the shape of the outer ring 5 in the front layer. 1 The reverse side or the reverse layer 2 is positive;
[0050] Step 2, in accordance with the arrangement of the inner ring 4 in the shape of the inner ring 4 in the shape of the inner ring 4 in the shape of the inner ring 4 in accordance with the arrangement of the opening resonance ring 8;
[0051] Step 3, on the front layer 1 fabric of the front layer 1 fabric on the front or front layer 1 fabric of the front layer 1 fabric of the front layer 2 fabric, the front layer 1 fabric of the front layer 1 fabric, the front layer 1 fabric, the front layer 1 fabric, or the front layer 1 fabric, the front layer 2 fabric, the front layer 2 fabric, the front layer 1 fabric. The front surface of the reverse or the back layer 2 fabric is bonded or laminated to form an electromagnetic shielding multilayer composite fabric of the type opening resonant ring.
[0052] like Figure 5-8 When the outer ring 5 and the inner ring 4 of the opening resonance ring 8 are respectively used, the outer ring plates 13 and the inner ring template 14 and the outer pressure ring plate 20 and the inner ring pressure plate 26 set corresponding to the outer ring template 13 and the inner ring template 14, respectively. A plurality of hollowed and edge-projected open resonance loop 15 are provided on the outer ring template 13, and the opening resonance loop 15 includes an outer edge protrusions 16 and an inner edge protrusions 17, an outer edge protrusion 16 and an inner edge protrusion 17 The positions 19 are provided at the position of the outer ring template 13 corresponding to the position of the opening resonance loop 15 on the outer ring template 13, respectively.
[0053] The outer ring 20 includes a panel 22, and a handle 21 is provided on the upper surface of the panel 22, and a plurality of ring column 23 is provided in the lower surface of the panel 22, and the rings 23 are coincident with the shape of the outer ring 5, that is, projections 16 and within the outer edge. The space formed between the edge protrusions 17 is consistent, and the rings 23 are disposed at a position on both sides of the outer ring lack 7, and the cutter 25 of the cutter 25 facing down, the upper surface of the rock column 23 is provided with at least two connection points. 24, the ring 23 is adhered to the lower surface of the panel 22 via the connection point 24, the shape of the cutter is as Figure 9 Indicated;
[0054] The inner ring template 14 is provided with a plurality of hollow and an inner ring opening resonance ring groove 15-1 in which the edge protrusions are provided. From 17-1, the inner ring projections 16-1 and the inner ring protrusions 17-1 correspond to the inner and outer edge shape of the inner ring 4, and the inner ring opening resonance loop 15 is corresponding to the inner ring template 14. 1 The position of the inner ring strip 19-1 is provided at the position;
[0055] The inner ring pressure plate 26 includes an inner ring panel 28, and an inner ring handle 27 is provided on the upper surface of the inner ring panel 28, and a plurality of inner ring column 29 is provided in the lower surface of the inner ring panel 28, and the inner ring column 29 and the inner ring 5 shape. The same, that is, the space formed between the end of the inner ring projections 16-1 and the inner ring projections 17-1, the inner ring ring 29 is provided with an inner ring at a position on both sides of the inner ring lattice 6. The cutter 31, the cutting edge of the inner ring cutter 31 facing down, and the inner ring ring 29 is provided with at least two inner ring connection points 30, and the inner ring ring 29 is adhered to the inner ring panel 28 through the inner ring connection point 30. surface;
[0056] When using, the outer ring template 13 is pressed on the front layer 1 on the front layer 1 and fixed on the front surface of the fabric and fixed, and one end of the conductive yarn or the metal filament 18 is fixed on the winding column 19, and then along line The outer edge protrusion 16 and the inner edge protrusion 17 of each of the open resonance rings are closely wound, and finally fixed on the winding column 19 of the other end, the number of windings of the conductive yarn or the metal filament 18 and the column The number is determined according to the width and thickness of the outer ring 5; then give the outer ring pressure plate 20 to the bottom of the ring 23, the lower gelatin is made, the inclusion is a fabric adhesive gel, and then each ring column 23 is aligned in the outer ring template 13. The open resonant ring groove 15 is embedded, and the conductive yarn in the opening resonant loop 15 is lightly rolled in the direction of the metal filaments, so that the metal filament is adequately adhered to the front layer 1 of the fabric side or the reverse layer 2 fabric. At the same time, the cutter 25 truncates the yarn and removes all the useless cutting lines to the outside of the ring, complete the production of the outer ring 5;
[0057] The production of the inner ring 4 is the same as the manufacturing method of the outer ring 5.
[0058] The above-mentioned open resonant ring electromagnetic shielding multilayer composite fabric, if the outer ring 5 and the inner ring 4 use a conductive coating film, it is implemented as follows:
[0059] Step 1, the front layer 1 is placed in the front layer of the front layer 1 facing upwardly on the table, and the outer ring 5 and the inner ring 4 in accordance with the arrangement of the opening resonance ring 8 in accordance with the outer ring 5 and the inner ring 4. The shape of the conductive coating reagent coated the conductive coating reagent on the front layer 1 of the front layer 1, coated until the outer ring 5 and the inner ring 4 satisfy the design thickness and the width requirements, and complete the production of the opening resonance ring 8;
[0060] Step 2, on the front or front layer 1 fabric of the front layer 1 fabric on the front layer 1 fabric of the front layer 2 fabric, the front layer 1 fabric, the front layer 1 fabric, the front layer 1 fabric, the front layer 1 fabric, or the front layer 1 fabric of the front layer 2 fabric, the front layer 1 fabric, the front layer 1 fabric. The front surface of the reverse or the back layer 2 fabric is bonded or laminated to form an electromagnetic shielding multilayer composite fabric of the type opening resonant ring.
[0061] If the outer ring 5 and the inner ring 4 use a conductive coating film, it is specifically:
[0062] First, press the outer ring template 13 or the inner ring template 14 on the front layer 1, the front layer 1, and fixed, and then secured to the electro-coating reagent, and then take the coating reagent using the outer ring pressure plate 20 and the inner ring pressure plate 26 plate. It is repeatedly embedded in the outer ring template 13 or the inner ring template 14 or the inner ring opening resonance ring groove 15-1 and is lightly rolled, so that the conductive coating reagent is uniformly solened to the groove of the open resonant ring.
[0063] The incident electromagnetic wave of the present invention is completely or mostly transmitted from the front surface, and a large portion is absorbed by the intermediate absorbing layer, and the other portion transmits a large amount of reflection to the reverse layer by the intermediate absorbing layer, thus The functional parameters of excellent absorbent and shielding properties, front-layer surface, reverse surface and intermediate absorbing layers need to be arranged in gradient, and the front layer is small or there is no reflective electromagnetic wave function. The reverse surface fabric has a strong reflective electromagnetic wave function, intermediate suction The wave layer has a multi-band electromagnetic wave absorption function, and the reflectance is -5db or more, so that the electromagnetic wave is absorbed by the intermediate absorbing layer after incidence of the front surface, and the transmitted residual electromagnetic wave is reflected by the reverse layer and is secondally absorbed. Sub-absorption, front-level material material can be a normal fabric or a lower shielded reflective fabric, such as less stainless steel fiber, silver plated fiber, copper-plated nickel fiber mixed fabric and ordinary natural and chemical fiber fabric, shielding efficiency Between 0-30 DB, electromagnetic waves can be incident to the intermediate layer in the case of partially reflected. The reverse surface material is a reflective fiber production, such as more stainless steel fibers, silver plated fibers, copper-plated nickel fiber blend, pure spinning and metal coating fabric, etc., the shielding performance is between 30-100 dB, which can make electromagnetic waves The intermediate layer is integrated as much as possible in the case of partial reflection.
[0064] The outer ring template and the inner ring template of the present invention are made of wood, light metal, plastic and polymer, etc., and the size is determined according to the composite fabric design requirements. The panel material of the present invention is a transparent polymer material to facilitate alignment of the ring column, and the column is a wood, a light metal, a polymer, and the like. The coating reagent of the present invention is a conductive coating made of conductive medium such as graphene, carbon nanotubes, etc., and specific conductivity parameters are determined according to the protection properties.
[0065] The present invention has to solve the technical method that is currently lacking both both the electromagnetic shielding fabric shielding effect and imparts a certain absorbing performance, and is difficult to meet the huge demand for polyhydraminated electromagnetic shield fabrics in various fields. For the present invention, an electromagnetic shielding multilayer composite fabric and preparation method having an absorbing characteristic are presented, and multiple reflections are proposed to improve the multilayer composite structure of the electromagnetic shield fabric shield and absorbing properties. The class open resonant ring structure is constructed to be effectively applied to the intermediate absorbing layer, thereby enabling the electromagnetic shield fabric while having a certain absorbing property.
[0066] The present invention overcomes the loss of shielding properties caused by the electromagnetic shield fabric due to a plurality of shielded fabric due to multi-layer compatibility, incident electromagnetic waves, and also enables the fabric to have a certain absorbing characteristic. The present invention overcomes the technical bottleneck present in the current electromagnetic shield fabric, and improves the shielding performance of the electromagnetic shield fabric, and also imparts its absorbing characteristics, and has an important role in the performance improvement and application promotion of electromagnetic shield fabrics.
[0067]The present invention adopts the front layer as a stainless steel fiber blended fabric, the shielding efficiency is 27dB, the reverse layer is a copper-plated nickel fabric, shielding performance 65dB, the intermediate absorbing layer opening resonance ring is made of a textile copper wire having a diameter of 0.18 mm, the outer ring radius is3.2 mm, the opening circumference is 1.5 mm, the inner ring radius is 1.7 mm, the opening peripheral length is 0.8 mm, each resonant ring spacing is 3.5 mm, and the multilayer composite fabric made at this time is in the 2.8GHz-15.3GHz frequency range shieldedBoth of 78 dB, the absorbance performance at 3.3 GHz-12.6GHz and 13.9 GHz-17.8GHz frequency range reflectance is below -12dB, and the optimum can reach near -30dB, which shows excellent shielding efficiency and absorbing properties.
