Highly reliable wear-resistant conductive cloth

Abstract

The application discloses a high-reliability wear-resistant conductive cloth, which comprises a base cloth and a metal plating layer formed on the surface of the base cloth, the base cloth is composed of common insulating fibers and metal composite fibers, and the metal composite fibers are in contact with and electrically connected with the metal plating layer. The high-reliability wear-resistant conductive cloth provided by the application has excellent wear and bending resistance, higher reliability, longer service life, more stable electrical performance, higher strength, higher manufacturing yield and lower cost.

Description

Technical Field

[0001] This application relates to the field of electromagnetic shielding materials, specifically to high-reliability wear-resistant conductive cloth. Background Technology

[0002] Conductive fabric, as a key electromagnetic shielding material, is widely used in the casings, seams, and cable shielding of various electronic products such as mobile phones, laptops, and medical devices. Currently, mainstream conductive fabrics are made by depositing one or more layers of metal (such as copper or nickel) on the surface of ordinary insulating fibers such as polyester and nylon using a combination of chemical plating and electroplating processes, giving them both conductive and electromagnetic shielding functions.

[0003] The drawback of this technology is:

[0004] 1. Poor reliability: Its conductivity depends entirely on the metal plating on the fiber surface. When the conductive cloth is subjected to repeated friction, bending, or scratching, the thin and brittle metal plating at the microscopic level is prone to cracking or even breaking off. These tiny breaks will obstruct the current path, causing the surface resistivity of the conductive cloth to rise sharply, the electromagnetic shielding effectiveness to decrease significantly, or even fail completely.

[0005] 2. Limited lifespan: In dynamic usage environments or situations requiring frequent disassembly and assembly, wear of the metal plating is inevitable, which greatly limits the lifespan and application scenarios of traditional conductive cloth.

[0006] Although there are conductive fabrics that are directly woven from pure metal fibers (such as stainless steel fibers), their conductivity (resistivity) is usually not as good as that of electroplated conductive fabrics, and they are expensive, hard, and lack flexibility, making it difficult to meet all application requirements.

[0007] Therefore, developing a new type of conductive cloth that possesses the excellent conductivity of electroplated conductive cloth, as well as higher reliability and durability, while maintaining controllable cost, is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0008] This application provides a high-reliability, wear-resistant conductive cloth.

[0009] In a first aspect, this application provides a high-reliability wear-resistant conductive cloth, comprising a substrate cloth and a metal plating layer formed on the surface of the substrate cloth, wherein the substrate cloth is made of a blend of ordinary insulating fibers and metal composite fibers, and the metal composite fibers are in contact with and electrically connected to the metal plating layer.

[0010] In some alternative embodiments, the metal composite fiber is formed by twisting stainless steel filaments with insulating filaments.

[0011] In some alternative embodiments, the high-reliability wear-resistant conductive cloth of this application further includes a passivation layer disposed on the surface of the metal plating layer, the surface of the metal plating layer having densely distributed pits and protrusions, the passivation layer being formed in the pits and the protrusions being exposed in the passivation layer.

[0012] In some alternative embodiments, the metal coating includes a first portion and a second portion formed on two opposing surfaces of the substrate fabric, the first portion and the second portion being electrically connected via the metal composite fiber.

[0013] In some alternative embodiments, the metal composite fibers are interwoven with the ordinary insulating fibers as warp and / or weft yarns at a predetermined interval in the substrate fabric.

[0014] In some alternative embodiments, the metal composite fibers are distributed in a uniform mesh pattern in the substrate fabric.

[0015] In some alternative embodiments, the common insulating fiber is polyester fiber, nylon fiber, or aramid fiber.

[0016] In some alternative embodiments, the metal plating is made of copper, nickel, tin, silver, or gold.

[0017] In some alternative embodiments, the metal coating includes a metal underlayer bonded to the surface of the substrate fabric, a metal thickening layer deposited on the metal underlayer, and a metal protective layer deposited on the metal thickening layer.

[0018] In some alternative embodiments, the metal underlayer is nickel, the metal thickening layer is copper, and the metal protective layer is nickel.

[0019] In some alternative embodiments, the metal plating is a single layer of metal, which is nickel, silver, or an alloy metal.

[0020] To address the shortcomings of existing conductive fabrics with poor performance, this application proposes a high-reliability, wear-resistant conductive fabric. This application effectively improves the performance of the conductive fabric by forming a metal coating on a substrate fabric made of a blend of ordinary insulating fibers and metal composite fibers. The technical effects achieved by this application include, but are not limited to:

[0021] (1) Extremely high reliability and fault tolerance: The greatest advantage of this application lies in its "self-connection of breakpoints" capability. When the metal coating on the surface of the substrate fabric may develop cracks or breakpoints at the microscopic level due to friction or bending, the metal composite fiber conductive network below the breakpoint, which is part of the substrate fabric, remains intact and conductive. Current can continue to be transmitted by bypassing the breakpoint of the metal coating through this native conductive network, thereby avoiding the problem of a sharp decline or failure of overall conductivity due to local damage. Thus, the conductive fabric of this application can still maintain an excellent and stable conductive path when the surface metal coating develops microscopic fractures due to wear or bending, thereby greatly improving the reliability of the product.

[0022] (2) Significantly improved service life: Due to the above-mentioned fault tolerance mechanism, the conductive cloth of this application has a greatly enhanced ability to withstand physical damage (especially friction and bending), and its effective service life far exceeds that of traditional electroplated conductive cloth.

[0023] (3) Balancing excellent performance with low cost: This application achieves a significant performance improvement by adding a low-cost metal composite fiber conductive "skeleton" under a high-performance metal coating. Compared to using a large amount or pure precious metal fibers, this solution only requires the addition of a small amount of stainless steel fibers, resulting in a very limited increase in cost and extremely high cost-effectiveness and market competitiveness.

[0024] (4) Stable electrical performance: After long-term dynamic use, the conductive cloth of this application can still maintain relatively stable low resistance and high shielding effectiveness, which is especially important for demanding precision electronic equipment and aerospace applications.

[0025] (5) Higher strength and manufacturing yield: Metal composite fibers are used instead of pure metal fibers to weave the base fabric together with ordinary insulating fibers. Pure metal fibers have low strength and poor flexibility, and are easy to break and difficult to weave during the weaving process. Metal composite fibers have the advantages of higher strength, less breakage, better flexibility and easier weaving, which can improve manufacturing yield and increase the strength of the final product.

[0026] (6) Use of multiple process routes: This application can adopt various process routes such as wet electroplating and dry vacuum sputtering. Among them, the vacuum sputtering process does not require the use of chemical electroplating solution, making the production process more environmentally friendly; and the sputtered coating has better density and adhesion to the substrate, providing more optimization options for product performance.

[0027] In summary, the high-reliability wear-resistant conductive cloth of this application has excellent wear and bending resistance, higher reliability, longer service life, more stable electrical performance, higher strength, higher manufacturing yield, and maintains a lower cost. Attached Figure Description

[0028] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the longitudinal cross-sectional structure of a high-reliability wear-resistant conductive cloth according to an embodiment of this application;

[0030] Figure 2 This is a top view of the substrate fabric according to one embodiment of this application;

[0031] Figure 3 This is a top view of the substrate fabric according to another embodiment of this application;

[0032] Figure 4 This is a flowchart of a method for preparing a high-reliability wear-resistant conductive cloth according to an embodiment of this application.

[0033] Explanation of reference numerals / symbols in the attached diagram:

[0034] 100: Base fabric; 101: Ordinary insulating fiber; 102: Metal composite fiber;

[0035] 200: Metal plating; 201: Metal base layer; 202: Thick metal layer; 203: Metal protective layer. Detailed Implementation

[0036] The specific embodiments of this application will be described below with reference to the accompanying drawings and examples. Those skilled in the art can easily understand the technical problems solved by this application and the resulting technical effects through the content described herein. It is understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not intended to limit the invention. Furthermore, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0037] It should be readily understood that the meanings of “on,” “above,” and “on top of” in this application should be interpreted in the broadest sense, such that “on” means not only “directly on something,” but also “on something” including intermediate components or layers existing between the two.

[0038] Furthermore, for ease of description, spatial relative terms such as “below,” “under,” “lower,” “above,” and “upper” may be used herein to describe the relationship of one element or component to another element or component shown in the accompanying drawings. In addition to the orientations described in the figures, spatial relative terms are also intended to cover different orientations of the device during use or operation. The device may be oriented in other ways (rotated 90° or otherwise), and the spatial relative descriptive terms used herein may be interpreted accordingly.

[0039] As used herein, the term "layer" refers to a portion of material comprising a region of a certain thickness. A layer may extend over the entirety of an underlying or upper layer structure, or may have a extent smaller than that of the underlying or upper layer structure. Furthermore, a layer may be a region of a homogeneous or heterogeneous continuous structure, with a thickness less than that of the continuous structure. For example, a layer may be located between the top and bottom surfaces of a continuous structure, or between any pair of horizontal planes therebetween. A layer may extend horizontally, vertically, and / or along a tapered surface. A substrate may be a single layer, which may include one or more layers, and / or may have one or more layers on, above, and / or below it. A single layer may include multiple layers. For example, a semiconductor layer may include one or more doped or undoped semiconductor layers, and may have the same or different materials.

[0040] It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading of the contents described in the specification. They are not intended to limit the scope of this application and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives of this application, should still fall within the scope of the technical content disclosed in this application. Furthermore, terms such as "above," "first," "second," and "a" used in this specification are merely for clarity of description and are not intended to limit the scope of this application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this application's implementation.

[0041] It should also be noted that the longitudinal section corresponding to the embodiment of this application can be the section corresponding to the front view direction, the transverse section can be the section corresponding to the right view direction, and the horizontal section can be the section corresponding to the top view direction.

[0042] Furthermore, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] refer to Figure 1 , Figure 1This is a schematic diagram of the longitudinal cross-sectional structure of a high-reliability, wear-resistant conductive cloth according to an embodiment of this application. Figure 1 As shown, the high-reliability, wear-resistant conductive fabric of this application includes a substrate fabric 100 and a metal plating layer 200 formed on the surface of the substrate fabric 100. The substrate fabric 100 is not a traditional insulating fabric, but a conductive blended fabric made by, for example, weaving ordinary insulating fibers 101 and metal composite fibers 102. Furthermore, the metal composite fibers 102 are in contact with and electrically connected to the metal plating layer 200.

[0044] In some alternative embodiments, the common insulating fiber 101 may be one or more of polyester fiber, nylon fiber or aramid fiber, which serves as the main skeleton of the fabric, providing basic mechanical strength and flexibility for the conductive cloth.

[0045] In some alternative embodiments, the metal composite fiber 102 can be formed by twisting stainless steel filaments with insulating filaments. Here, the insulating filaments can be one or more combinations of polyester, nylon, or aramid fibers. The insulating filaments and ordinary insulating fiber 101 can be made of the same or different materials. Here, the stainless steel filaments are made of, but are not limited to, 316L stainless steel. Here, the metal composite fiber 102 can be woven into the substrate fabric 100 in a certain proportion and a specific arrangement. The stainless steel filaments in the metal composite fiber 102 are themselves conductors, forming a native, stable three-dimensional conductive network within the substrate fabric 100.

[0046] In some alternative embodiments, the diameter of the stainless steel fiber filaments can be between 0.02 mm and 0.03 mm. The diameter of the metal composite fiber 102 can be between 0.02 mm and 0.04 mm, for example, 0.03 mm.

[0047] In some alternative embodiments, in the substrate fabric 100, the metal composite fiber 102 can be used as warp and / or weft yarns, interwoven with ordinary insulating fiber 101 at a predetermined spacing to form a blended structure. (Reference) Figure 2 For example, the metal composite fiber 102 can be used as a weft yarn (horizontal direction) and evenly distributed throughout the substrate fabric 100 at certain intervals (e.g., every N ordinary insulating fiber yarns woven into one stainless steel fiber yarn). For example, N can be a natural number between 5 and 15.

[0048] In some alternative implementations, refer to Figure 3 The metal composite fiber 102 can be used as both warp and weft yarns, and is distributed in a uniform mesh pattern in the substrate fabric 100 to form a mesh-like conductive substrate.

[0049] In some alternative embodiments, the material of the metal plating 200 includes at least one of copper, nickel, tin, silver, gold, and their alloys.

[0050] In some alternative embodiments, the metal coating 200 is formed on all surfaces of the substrate fabric 100, including the front, back, and sides, by a metal deposition process.

[0051] In some alternative embodiments, the metal coating 200 is uniformly deposited, and the thickness of the metal coating 200 deposited in different areas of the substrate fabric 100 is approximately equal.

[0052] In some alternative embodiments, the metal coating 200 includes a first portion and a second portion formed on two opposing surfaces (front and back) of the substrate fabric 100, the first portion and the second portion being electrically connected by metal composite fibers 102.

[0053] In some alternative embodiments, the metal plating 200 is a single layer of metal, which may be nickel, silver, or an alloy metal.

[0054] In some alternative embodiments, the metal plating 200 may include multiple metal layers, for example, it may include a metal underlayer 201 bonded to the surface of the substrate fabric 100, a metal thickening layer 202 deposited on the metal underlayer 201, and a metal protective layer 203 deposited on the metal thickening layer 202. For example, the metal underlayer 201 is nickel, the metal thickening layer 202 is copper, and the metal protective layer 203 is nickel.

[0055] In some alternative embodiments, the metal coating 200 can be formed by a wet process, which may include a combination of electroless plating and electroplating. The metal coating 200 can also be formed by a dry process, such as physical vapor deposition (PVD) methods like vacuum sputtering. The metal coating 200 can also be formed by a combination of dry and wet processes.

[0056] In some optional embodiments, the conductive fabric of this application further includes a passivation layer (not shown in the figure) disposed on the surface of the metal plating layer 200. The surface of the metal plating layer 200 has densely distributed pits and protrusions. The passivation layer is formed in the pits on the surface of the metal plating layer 200, while the protrusions on the surface of the metal plating layer 200 are exposed to the passivation layer to achieve the conductive function. The passivation layer is an insulating material, including but not limited to resin or adhesive.

[0057] The above provides a brief overview of the structure of the high-reliability, wear-resistant conductive cloth provided in this application. It can be seen that the core improvements of this application include, but are not limited to: 1. By combining "surface conductivity" (the metal plating layer 200 on the surface of the substrate cloth 100) with "linear conductivity" (the conductive network formed by the metal composite fibers 102 inside the substrate cloth 100), a double-protected conductive system is constructed; 2. The use of metal composite fibers 102 formed by twisting stainless steel filaments and insulating filaments satisfies both conductivity requirements and improves strength, solving the problem of insufficient strength and difficulty in weaving of pure metal filaments.

[0058] refer to Figure 4 An embodiment of this application also provides a method for preparing the high-reliability wear-resistant conductive cloth as described above, the method comprising the following steps:

[0059] Step 410: Prepare the substrate fabric, which is made of a blend of ordinary insulating fibers and metal composite fibers.

[0060] First, ordinary insulating fibers and metal composite fibers are selected as yarns. The metal composite fibers can be formed by twisting stainless steel filaments with insulating fiber filaments. Then, a weaving process is used, in which the metal composite fibers are used as warp and / or weft yarns, interwoven with ordinary insulating fiber yarns at a predetermined spacing and arrangement. For example, when using metal composite fibers as weft yarns, one metal composite fiber weft yarn is woven in every 5-15 ordinary insulating fiber weft yarns. This process is used to weave a blended fabric as the base material. Optionally, the metal composite fibers can be evenly distributed in a mesh pattern within the base material to form a mesh-like conductive substrate.

[0061] Step 420: Perform pretreatment. Pretreatment may include degreasing and roughening the substrate fabric. Pretreatment cleans the surface of the substrate fabric and increases its adhesion to the subsequent metal plating. This pretreatment step is optional.

[0062] Step 430: Form a metal coating on the surface of the substrate fabric using a metal deposition process.

[0063] This article presents several parallel pathways for the fabrication of metal coatings.

[0064] Path A, wet electroplating process: one or more layers of metal material are formed as a metal coating through chemical plating and / or electroplating processes.

[0065] For example, the electroless plating process includes: sensitizing and activating the pretreated substrate fabric, and then treating it in an electroless plating solution to form a continuous, conductive metallic material on all fiber surfaces as a metal underlayer. Here, the metal underlayer includes, but is not limited to, nickel, copper, or tin, and is not limited herein.

[0066] For example, the electroplating process includes: placing a substrate fabric with a pre-formed metal underlayer as the cathode in an electroplating bath, and electroplating one or more layers of metal material to thicken it. Here, the metal material being electroplated includes, but is not limited to, copper, nickel, tin, gold, or silver.

[0067] Path B, Dry Vacuum Sputtering Process: A metal coating is formed on the surface of the substrate fabric through vacuum sputtering.

[0068] For example, a vacuum sputtering process includes: placing a pretreated substrate fabric in a vacuum chamber, and bombarding it with atoms or ions of a metal target (e.g., nickel, copper, tin, etc.) using magnetron sputtering or other methods, causing it to deposit one or more layers of metal thin film on the fiber surface of the substrate fabric. Next, one or more different metal targets can be used sequentially (e.g., sputtering a copper target first, then a nickel target) to form a composite metal coating.

[0069] Path C, combining dry vacuum sputtering and wet electroplating processes: First, a sputtered metal coating is formed on the surface of the substrate fabric through vacuum sputtering; then, one or more electroplated metal coatings are formed through electroplating.

[0070] In combination with the above three paths, in some optional implementations, step 430 may include:

[0071] a. A metal underlayer is formed on the surface of the substrate fabric through chemical plating or vacuum sputtering processes. For example, a layer of nickel is chemically plated as the metal underlayer.

[0072] b. Form a thicker metal layer on top of the underlying metal using electroplating or vacuum sputtering processes. For example, electroplating a layer of copper onto a nickel metal substrate as a thicker metal layer can significantly reduce resistivity.

[0073] c. A protective metal layer is formed on the thickened metal layer using electroplating or vacuum sputtering processes. For example, a nickel plating layer can be electroplated onto a thickened copper metal layer as a protective metal layer, providing wear resistance and oxidation resistance. Optionally, this protective metal layer is not limited to nickel plating; it can also be replaced with silver or gold plating.

[0074] Of course, wet electroplating or dry vacuum sputtering processes can also be used to form a single layer of metal as a metal coating 200. This single layer of metal can be nickel, silver, or an alloy metal.

[0075] Step 440: Perform post-processing. Post-processing may include washing, first drying, anti-oxidation treatment, second drying, adhesive backing, and slitting. This post-processing step is optional.

[0076] Antioxidant treatment can also be called passivation treatment. In some optional embodiments, passivation treatment includes: forming a passivation layer on the surface of a metal plating layer, the surface of the metal plating layer having densely distributed pits and protrusions, the passivation layer being formed in the pits and the protrusions being exposed above the passivation layer. The passivation layer includes, but is not limited to, vertical or adhesive materials.

[0077] After post-processing, the final product is obtained—a highly reliable, wear-resistant conductive cloth.

[0078] To facilitate the implementation of the technical solutions of this application, several specific application scenario embodiments are provided below.

[0079] Example 1:

[0080] A method for preparing a high-reliability, wear-resistant conductive cloth includes the following steps.

[0081] S11. Preparation of substrate fabric:

[0082] First, material selection: ordinary insulating fibers are made of polyester filaments, while metal composite fibers are formed by twisting 316L stainless steel filaments with insulating fiber filaments (or stainless steel composite fibers). Specifically, 100 denier (D) polyester filaments can be used as warp and main weft yarns, and 316L stainless steel composite fibers with a diameter of 15-100D can be used as functional weft yarns.

[0083] Then, using a plain weave process, the fabric is woven in a cycle of "1 stainless steel non-woven fiber weft yarn + 10 polyester weft yarns" to obtain a blended base fabric with a unit area mass of approximately 90 g / m2. Denier (D) is a unit of measurement for the fineness of a fiber or yarn, defined as the weight in grams of 9000 meters of fiber or yarn at a standard moisture regain.

[0084] S12. Pretreatment: The substrate fabric is degreased in an alkaline solution containing surfactant at 80°C for 30 minutes, washed with water, treated in a chromic acid-sulfuric acid roughening solution at 70°C for 15 minutes, and then neutralized with sodium bisulfite solution.

[0085] S13. Electroless nickel plating: After being sensitized by stannous chloride and activated by palladium chloride, the fabric is placed in a formaldehyde-based electroless copper plating (replaced with nickel plating) solution and plated at 35°C for 20 minutes to completely cover the fabric surface with a layer of nickel, with a surface resistance of approximately 0.8Ω / sq.

[0086] S14. Copper electroplating: The above-mentioned substrate fabric is placed in an acidic copper sulfate electroplating solution at 2A / dm³. 2 Electroplating at a current density for 20 minutes forms a thicker copper plating layer, reducing the surface resistance to 0.04Ω / sq.

[0087] S15, Electroplating Nickel: After removal, in a Watt-type nickel plating solution, at 1.5 A / dm 2 Electroplating is performed at a current density for 5 minutes, followed by a layer of nickel coating on the copper layer for corrosion and wear resistance. This completes the formation of a three-layer metal plating.

[0088] S16. Post-treatment: After cleaning, passivation (i.e., anti-oxidation treatment) and drying at 75°C, a layer of conductive acrylic pressure-sensitive adhesive (i.e., backing adhesive) is coated on the back and then cut into 10mm wide conductive cloth tapes (i.e., slitting).

[0089] Optionally, the passivation step includes: generating a protective film as a passivation layer on the surface of the metal plating layer. The material of the protective film includes, but is not limited to, resin or adhesive (cured by glue). Since the surface of the metal plating layer is uneven, the protective film will not completely cover the metal plating layer, but will mainly be set in the pits. The protruding parts of the metal plating layer can be conductive.

[0090] Performance testing: The conductive fabric was subjected to a bending test. After being repeatedly bent 20,000 times at a bending radius of 5mm, its surface resistivity increased from 0.05Ω / sq to 0.08Ω / sq, with a performance change rate of only 60%. In contrast, traditional conductive fabrics made using the same process but on a pure polyester substrate showed a sharp increase in resistivity from 0.05Ω / sq to over 5Ω / sq under the same conditions, essentially rendering them unusable.

[0091] Example 2:

[0092] A method for preparing a high-reliability, wear-resistant conductive cloth includes the following steps.

[0093] S21. Preparation of substrate fabric: Same as in Example 1.

[0094] S22. Pretreatment: The fabric is cleaned with low-pressure argon plasma in a vacuum chamber for 10 minutes to remove organic contaminants from the surface and activate the surface.

[0095] S23. Metal deposition (vacuum sputtering): The pretreated substrate fabric is fixed on the winding system of the magnetron sputtering equipment. The vacuum chamber is evacuated to a background vacuum of 5.0×10-3 Pa. High-purity argon is introduced as the working gas, and the gas pressure is adjusted to 0.5 Pa. The metal target is turned on to sputter the substrate fabric and form a layer of nickel.

[0096] S24, Electroplating copper: Same as in Example 1.

[0097] S25, Electroplating nickel: Same as Example 1.

[0098] This completes the formation of a three-layer metal coating.

[0099] S26. Post-processing: The conductive cloth with the metal coating is removed from the vacuum chamber, cleaned, passivated, dried, coated with adhesive, and slit to obtain the final product.

[0100] Performance testing: The conductive cloth prepared in this embodiment was subjected to the same bending test (bending radius 5mm, 20,000 times). Its surface resistivity increased from 0.08Ω / sq to 0.15Ω / sq, and its performance remained highly stable, proving the effectiveness of the core solution of this application.

[0101] Example 3:

[0102] A method for preparing a high-reliability, wear-resistant conductive cloth includes the following steps.

[0103] S31. Substrate preparation: Same as in Example 1.

[0104] S32. Pretreatment: The fabric is cleaned with low-pressure argon plasma in a vacuum chamber for 10 minutes to remove organic contaminants from the surface and activate the surface.

[0105] S33, Metal layer deposition (vacuum sputtering):

[0106] The pre-treated fabric is fixed onto the winding system of the magnetron sputtering equipment.

[0107] The vacuum chamber was evacuated to a background vacuum of 5.0 × 10⁻³ Pa, and high-purity argon gas was introduced as the working gas. The gas pressure was adjusted to 0.5 Pa.

[0108] Sputtered copper layer: Turn on the copper target, set the sputtering power to 2kW, and sputter the fabric for 15 minutes to form a conductive copper underlayer.

[0109] Sputtering nickel layer: Without disrupting the vacuum, switch to the nickel target, set the sputtering power to 1.5kW, and continue sputtering for 5 minutes to form a wear-resistant and oxidation-resistant nickel layer on the copper surface.

[0110] Thus, two sputtered metal coatings were obtained, and the final surface resistance of the conductive cloth was approximately 0.08 Ω / sq.

[0111] S34. Post-processing: The coated conductive cloth is taken out of the vacuum chamber, and then adhesive is applied and the cloth is cut to obtain the final product.

[0112] Performance testing: The conductive cloth prepared in this embodiment was subjected to the same bending test (bending radius 5mm, 20,000 times). Its surface resistivity increased from 0.08Ω / sq to 0.15Ω / sq, and its performance remained highly stable, proving the effectiveness of the core solution of this application.

[0113] Although this application has been described and illustrated with reference to specific embodiments thereof, such description and illustration are not limiting of this application. It will be readily understood by those skilled in the art that various changes can be made and equivalent elements can be substituted within embodiments without departing from the true spirit and scope of this application as defined by the appended claims. Illustrations may not be drawn to scale. Differences may exist between the technical representation in this application and actual implementation due to variables in the manufacturing process, etc. Other embodiments of this application may exist that are not specifically described. The description and illustrations should be considered illustrative rather than restrictive. Modifications can be made to adapt particular circumstances, materials, composition, methods, or processes to the objectives, spirit, and scope of this application. All such modifications fall within the scope of the appended claims. While the methods disclosed herein have been described with reference to specific operations performed in a particular order, it should be understood that these operations can be combined, subdivided, or reordered to form equivalent methods without departing from the teachings of this application. Therefore, unless specifically indicated herein, the order and grouping of operations do not limit this application.

Claims

1. A high-reliability, wear-resistant conductive cloth, comprising a substrate cloth and a metal plating layer formed on the surface of the substrate cloth, characterized in that: The substrate fabric is made of a blend of ordinary insulating fibers and metal composite fibers, wherein the metal composite fibers are in contact with and electrically connected to the metal coating.

2. The high-reliability wear-resistant conductive cloth according to claim 1, characterized in that, The metal composite fiber is formed by twisting stainless steel filaments and insulating filaments together.

3. The high-reliability wear-resistant conductive cloth according to claim 1, characterized in that, The method further includes a passivation layer disposed on the surface of the metal plating layer, the surface of the metal plating layer having densely distributed pits and protrusions, the passivation layer being formed in the pits and the protrusions being exposed in the passivation layer.

4. The high-reliability wear-resistant conductive cloth according to claim 1, characterized in that, The metal coating includes a first portion and a second portion formed on two opposite surfaces of the substrate fabric, the first portion and the second portion being electrically connected through the metal composite fiber.

5. The high-reliability wear-resistant conductive cloth according to claim 1, characterized in that, In the substrate fabric, the metal composite fiber is used as warp and / or weft yarns and interwoven with the ordinary insulating fiber at a preset interval.

6. The high-reliability wear-resistant conductive cloth according to claim 5, characterized in that, The metal composite fibers are distributed in a uniform mesh pattern in the substrate fabric.

7. The high-reliability wear-resistant conductive cloth according to claim 1, characterized in that, The common insulating fiber is polyester fiber, nylon fiber or aramid fiber.

8. The high-reliability wear-resistant conductive cloth according to claim 1, characterized in that, The material of the metal plating layer is copper, nickel, tin, silver or gold.

9. The high-reliability wear-resistant conductive cloth according to claim 1, characterized in that, The metal coating includes a metal underlayer bonded to the surface of the substrate fabric, a metal thickening layer deposited on the metal underlayer, and a metal protective layer deposited on the metal thickening layer.

10. The high-reliability wear-resistant conductive cloth according to claim 9, characterized in that, The metal base layer is nickel, the metal thickening layer is copper, and the metal protective layer is nickel.

11. The high-reliability wear-resistant conductive cloth according to claim 1, characterized in that, The metal coating is a single-layer metal, which is nickel, silver, or an alloy metal.

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