Flexible conductive cloth, method of making, and flexible fabric

Abstract

The application discloses a flexible conductive cloth, a flexible conductive cloth preparation method and a flexible fabric. The flexible fabric comprises a substrate fabric and a flexible conductive cloth which are fixed to each other. The flexible conductive cloth comprises a fullerenic fiber cloth and electrodes. The electrodes are made of flexible carbon fiber materials. The two electrodes are arranged on the fullerenic fiber cloth at intervals. The electrodes are attached to the fullerenic fiber cloth and are fixedly connected to the fullerenic fiber cloth in a mutual sewing mode. The flexible conductive cloth preparation method comprises cutting and tailoring the sheet-shaped or strip-shaped carbon fiber material into electrodes with required sizes and sewing and fixing the electrodes and the fullerenic fiber cloth through sewing threads. The application provides a flexible conductive cloth, a flexible conductive cloth preparation method and a flexible fabric. The flexible conductive cloth has good mechanical strength, high-temperature resistance, stability and fatigue resistance of the material itself, so that the flexible electrode material can be used for a long time in a high-temperature and high-frequency dynamic scene when the flexible electrode material is applied to the flexible conductive cloth as electrodes.

Description

Technical Field

[0001] This invention relates to the technical field of conductive heating of flexible fabrics, specifically a flexible conductive fabric, a method for preparing the flexible conductive fabric, and a flexible woven fabric. Background Technology

[0002] With the development of flexible conductive materials, the use of flexible conductive fabrics in flexible textiles is a common application. Therefore, the positive and negative electrodes of these fabrics also need to be flexible electrodes, possessing good conductivity, flexibility, and resistance to bending fatigue. Currently available flexible electrode materials mainly include metal-based materials, such as silver nanowires, copper foil, and metal meshes, as well as a smaller portion of carbon-based materials, such as carbon nanotubes. Metal-based materials, when used as flexible electrodes, suffer from brittleness and fragility; carbon nanotubes, when used as flexible electrodes, exhibit high interfacial impedance between the electrode and the flexible conductive fabric, resulting in poor conductivity. Therefore, existing conventional flexible electrode materials cannot meet the performance requirements of flexible electrodes.

[0003] In addition, when using existing traditional processes (such as coating and molding) to bond flexible electrodes to flexible substrates (flexible conductive fabrics), there is a common problem of weak bonding, especially in high-temperature (>200℃) or high-frequency dynamic scenarios (such as joints of wearable devices), the performance will degrade sharply. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art: to provide a flexible conductive fabric, a method for preparing the flexible conductive fabric, and a flexible fabric, the material itself having good mechanical strength, high temperature resistance, stability and fatigue resistance, so that when the flexible electrode is applied to the flexible conductive fabric as an electrode, it can be used for a long time in high temperature and high frequency dynamic scenarios.

[0005] Therefore, the first objective of this invention is to provide a flexible conductive fabric, a method for preparing the flexible conductive fabric, and a flexible textile, comprising a carbon fiber cloth and at least two electrodes. The electrodes are made of flexible carbon fiber cloth, and the two electrodes are arranged alternately on the carbon fiber cloth. The electrodes are attached to the carbon fiber cloth and fixedly connected to it by stitching. When using carbon fiber cloth as electrodes, carbon fiber itself possesses extremely high mechanical strength and bending resistance, as well as good conductivity, making it suitable as a flexible electrode material. Furthermore, carbon fiber can withstand temperatures of thousands of degrees Celsius in an inert environment, exhibiting high-temperature resistance. In chemical environments, carbon fiber is less susceptible to corrosion than metals, demonstrating good stability. Its low coefficient of thermal expansion and fatigue resistance are also advantages, resulting in electrodes made of carbon fiber cloth having a longer service life compared to existing conventional electrodes, especially in high-temperature and high-frequency dynamic scenarios.

[0006] According to one example of the invention, the electrode is sewn onto the olefin-coated fabric by stitching.

[0007] According to one example of the present invention, the suture thread is one or more of carbon fiber thread, sewnable silver thread, quartz thread, nylon thread, and cotton thread.

[0008] According to one embodiment of the present invention, the suture is a carbon fiber thread, and the suture and the electrode are integrally integrated. The thread end facing away from the electrode is sewn and fixed to the olefin fiber cloth, so that the electrode and the olefin fiber cloth are in close contact. When the carbon fiber thread is used as the suture, the suture is made of the same material as the carbon fiber cloth in the electrode.

[0009] According to one example of the present invention, the graphene-coated fiber cloth includes one of graphene glass fiber cloth, graphene ceramic fiber cloth, graphene basalt fiber cloth, and graphene quartz fiber cloth.

[0010] According to one example of the present invention, the coated fiber cloth is a coated fiber cloth containing a copper mesh inside. Copper wire is woven and composited with an existing coated fiber cloth to form a coated fiber cloth with an internally interwoven copper mesh. This allows the coated fiber cloth containing the copper mesh to possess both conductivity and flexibility, making it particularly suitable as an electrode for flexible heating devices or other flexible electronic devices requiring high conductivity and bending stability.

[0011] According to one embodiment of the present invention, the front side of the olefin-coated fiber cloth at the position corresponding to the electrode is coated with a conductive paste. The electrode and the conductive layer formed after the conductive paste has cured are tightly adhered to each other and sewn together with the olefin-coated fiber cloth. Adding a layer of conductive paste between the olefin-coated fiber cloth and the electrode can make the bonding between the olefin-coated fiber cloth and the electrode tighter and also helps to reduce the electrode resistance.

[0012] Therefore, a second objective of this invention is to provide a method for preparing a flexible conductive fabric, comprising: The sheet or strip of carbon fiber cloth is cut into electrodes of the required size; Select an area on the polypropylene fiber cloth for mounting electrodes, and brush the conductive paste onto the selected area on the polypropylene fiber cloth. The electrodes are attached to the conductive layer formed after the conductive paste has cured. The electrode and the olefin fiber cloth are sewn together to secure them, ensuring that the electrode is in close contact with the conductive layer.

[0013] According to one example of the present invention, the conductive paste is one or more of silver paste, carbon nanotube paste, and graphene paste.

[0014] Therefore, a third objective of this invention is to provide a flexible fabric comprising a substrate and the aforementioned flexible conductive fabric, wherein the flexible conductive fabric is fixedly connected to the substrate. The substrate and the olefin-coated fiber fabric in the flexible conductive fabric are composited together, enabling the substrate to be firmly bonded to the olefin-coated fiber fabric.

[0015] According to one example of the invention, the substrate fabric has a reserved gap that matches the flexible conductive fabric, the flexible conductive fabric is filled in the reserved gap, and the outer edge portion of the olefin-coated fabric in the flexible conductive fabric is sewn and fixed to the substrate fabric.

[0016] Therefore, a fourth objective of the present invention is to provide an application of the above-mentioned flexible fabric in flexible wearable products.

[0017] The above technical solution has the following advantages or beneficial effects: First, the sheet resistance of the fiber-coated cloth is 0.5~20kΩ, and it is usually used as a heating material. During experiments, it was found that the sheet resistance of carbon fiber cloth is generally lower than that of the fiber-coated cloth, so carbon fiber cloth can be used as the electrode of the fiber-coated cloth, and the connection is achieved through stitching. This connection method has been verified through research and testing to be safe and robust. Using carbon fiber as the flexible electrode material gives the electrode extremely high mechanical strength, bending resistance, high-temperature resistance, stability, and fatigue resistance, making it particularly suitable for use as an electrode in high-temperature or high-frequency dynamic scenarios. Second, by adding a conductive layer formed by brushing conductive paste, the electrode and the fiber-coated cloth are more tightly bonded, increasing interface adhesion and ensuring good electrical contact. Finally, using carbon fiber electrodes allows the electrode to not only be conductive but also generate heat, resulting in a small temperature difference between the electrode and the fiber-coated cloth. The overall flexible conductive cloth does not form a low-temperature region at the electrode location, resulting in good temperature uniformity.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] Figure 1 This is a top view of the flexible conductive fabric of the present invention.

[0020] Figure 2 for Figure 1 A schematic diagram of the explosive decomposition.

[0021] Figure 3 yes Figure 1 A bottom view of the flexible fabric composed of the flexible conductive fabric and the substrate.

[0022] Figure 4 for Figure 3 A schematic diagram of the explosive decomposition.

[0023] Figure 5 for Figure 3 A partially enlarged schematic diagram of the cross-sectional view along the "AA" direction.

[0024] Figure 6 This is a schematic diagram of the explosive decomposition of a flexible conductive fabric and a substrate with pre-reserved notches being stitched together.

[0025] Figure 7 This is a physical image of the flexible conductive fabric of the present invention.

[0026] Figure 8 for Figure 7 Electrothermal infrared thermogram of medium-flexible conductive fabric.

[0027] Among them, 1. olefin fiber cloth; 2. electrode; 3. stitching; 4. conductive layer; 5. substrate material; 5.1. reserved notch. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] The following describes in detail, with reference to the accompanying drawings, the flexible conductive fabric, the method for preparing the flexible conductive fabric, and the flexible textile according to embodiments of the present invention.

[0030] The graphene-coated fiber cloth described below refers to a sheet-like macroscopic structure, and a continuous single-layer or multi-layer graphene film layer grown on the surface of various existing fiber cloth substrates through methods such as chemical vapor deposition, epitaxial growth, and scanning electromagnetic induction ultrafast growth. The graphene layer on this graphene-coated fiber cloth can be called a continuous graphene film layer, or simply a continuous graphene film. The thickness of this continuous graphene film is between a few nanometers and tens of nanometers. Because graphene is formed through growth, the layered graphene film grown on the substrate is continuous, hence the name continuous graphene film, also known as a nanometer-thick continuous graphene film. Preferably, the preparation method disclosed in CN113840801A is used to form a nanometer-thick continuous graphene film on the substrate surface. This nanoscale thickness continuous graphene film differs from the graphene slurry layer formed by existing thick film coating processes. Graphene slurry layers are mostly millimeter-thick. Furthermore, since this graphene slurry layer is formed by first mixing graphene powder with a solvent to form a slurry, and then coating the slurry onto the substrate, although this graphene slurry layer is also a layered structure, its thickness is relatively large, and it is not a continuous graphene film.

[0031] The stitching described below includes sewing, blending, and laying stitching processes. Sewing is the process of stitching two or more pieces of fabric together with thread. Blending, also known as mixed weaving, is the process of mixing and fixing two different types of fabric together during weaving. Laying stitching is the process of piecing together large pieces of fabric using a laying stitching machine.

[0032] Example 1 This invention provides a flexible conductive fabric, such as Figures 1-2 As shown, it includes a flexible olefin fiber cloth 1 and at least two electrodes 2, the electrodes 2 being made of flexible carbon fiber material, the two electrodes 2 being arranged at intervals on the olefin fiber cloth 1, the electrodes 2 being attached to the olefin fiber cloth 1 and fixedly connected to the olefin fiber cloth 1 by stitching them together.

[0033] Preferably, there are two electrodes 2, which serve as a positive electrode 2 and a negative electrode 2, respectively, for connecting to the positive and negative terminals of an external power source.

[0034] Furthermore, the number of electrodes 2 is an even number, greater than two. Taking four electrodes 2 as an example, two electrodes 2 are used as positive and negative electrodes, while the remaining two are used as spare positive and negative electrodes. If one electrode is bent or damaged, the spare electrode can be directly connected to the positive and negative terminals of the power supply. See also... Figure 1 As shown, the two electrodes 2 are respectively disposed on both sides of the olefin fiber cloth 1 along the width direction of the olefin fiber cloth 1, and the upper end of the electrodes 2 is exposed outside the olefin fiber cloth 1 for electrical connection with the positive and negative poles of an external power source.

[0035] To ensure a stronger bond between electrode 2 and the coated fiber cloth 1, in this embodiment, electrode 2 and coated fiber cloth 1 are adhered to and sewn together. Specifically, electrode 2 is sewn onto coated fiber cloth 1 using sewing thread 3. Sewing thread 3 can be an insulating thread or a non-insulating thread, i.e., a conductive thread. Specifically, when using insulating thread as sewing thread 3, the thread can be one or more of quartz fiber, nylon, or cotton; when using non-insulating thread, the thread 3 can be carbon fiber or sewnable silver thread, preferably carbon fiber. In this embodiment, the carbon fiber thread used in sewing thread 3 is the same as the carbon fiber thread in the carbon fiber cloth used in coated fiber cloth 1, with the same carbon fiber composition and diameter, resulting in low interfacial resistance between sewing thread 3 and coated fiber cloth 1. The sewing in this embodiment includes, but is not limited to, using a sewing machine to completely lay and sew electrode 2 onto the surface of coated fiber cloth 1.

[0036] Furthermore, the sewing thread 3 and the electrode 2 are an integral structure, meaning that the electrode 2 has multiple strands of sewing thread 3 led out from the carbon fiber filaments in its own carbon fiber cloth. The end of the sewing thread 3 facing away from the electrode 2 is the thread end, which is sewn and fixed to the polypropylene fiber cloth 1, so that the electrode 2 and the polypropylene fiber cloth 1 are in close contact. In this embodiment, the thread end of the sewing thread 3 and the electrode 2 are integrally continuous, thus reducing the probability of subsequent detachment, especially in high-frequency dynamic application scenarios, reducing the problem of weak bonding between the electrode 2 and the polypropylene fiber cloth 1 due to the loosening of the sewing thread 3. With an electrode width of 10mm, the maximum tensile strength of the electrode 2 exceeds 2000N, and the maximum tensile strength exceeds 150MPa.

[0037] Example 2 Based on the preferred embodiment of the above, the graphene-coated fiber cloth 1 comprises an inorganic fiber substrate and a continuous graphene film prepared on the surface of the inorganic fiber substrate. The inorganic fiber substrate includes one or more of glass fiber cloth, ceramic fiber cloth, basalt fiber cloth, and quartz fiber cloth. Therefore, the graphene-coated fiber cloth 1 obtained by growing a continuous graphene film on the surface of different inorganic fiber substrates includes one or more of graphene glass fiber cloth, graphene ceramic fiber cloth, graphene basalt fiber cloth, and graphene quartz fiber cloth.

[0038] Preferably, the coated fiber cloth is a coated fiber cloth containing a copper mesh. Specifically, based on existing commercially available coated fiber cloth, copper wires are woven and composited with the coated fiber cloth, that is, copper wires are woven into the existing coated fiber cloth in a warp and weft interlacing manner. The resulting coated fiber cloth containing a copper mesh has both conductivity and flexibility.

[0039] Example 3 In a preferred embodiment, the front side of the carbon fiber cloth 1, at the position corresponding to the electrode 2, is coated with a conductive paste. The conductive layer 4 formed after the electrode 2 and the conductive paste are cured adhered tightly to each other and is sewn and fixed to the carbon fiber cloth 1. The conductive layer 4 makes the bonding between the carbon fiber electrode 2 and the carbon fiber cloth 1 tighter, that is, increases the interfacial adhesion between the two, thereby ensuring good electrical contact and reducing interfacial impedance.

[0040] Example 4 This invention provides a method for preparing the flexible conductive fabric in the above embodiments, comprising: Large sheets or strips of carbon fiber cloth are cut into electrodes of the required size. Select an area on the olefin-coated fiber cloth 1 for mounting the electrode 2; Each electrode 2 is attached to the selected area of ​​the olefin-coated fiber cloth 1; Finally, the electrode 2 and the olefin fiber cloth 1 are sewn together and fixed with suture 3 so that the electrode 2 is in close contact with the conductive layer 4.

[0041] Preferably, the suture 3 is a quartz thread or a carbon fiber thread. The suture 3 is used to sew the electrode sheet 2 to both ends of the coated fiber cloth 1 using a sewing machine, serving as the electrode. Various stitching techniques can be used during the sewing process. The resistance of the sewn carbon fiber electrode is related to the resistivity of the carbon fiber itself. To avoid affecting the sample heating, high-performance carbon fiber cloth, carbon fiber braided tape, carbon fiber tow, or carbon fiber tubing can be selected as the electrode 2. After 100 bends, the resistance change of the prepared carbon fiber electrode is <1%. Specifically, the resistance at both ends of the carbon fiber electrode is measured with a multimeter and recorded as the initial resistance; then, the two ends of the carbon fiber electrode are held by hand and bent. Each bend, from flat to bent and back to flat, is counted as one bend. This is repeated 100 times. The resistance at both ends of the carbon fiber electrode is then measured again with a multimeter and recorded as the resistance after bending. Comparing the initial resistance and the resistance after bending, the resistance change is <1%.

[0042] Example 5 Based on the preferred embodiment of Example 4, the preparation method includes: Large sheets or strips of carbon fiber cloth are cut into electrodes of the required size. Select an area on the polypropylene fiber cloth 1 for mounting the electrode 2, and brush the conductive paste onto the selected area on the polypropylene fiber cloth 1. After the conductive paste has cured, a conductive layer 4 can be formed, and then each electrode 2 is attached to its corresponding conductive layer 4. Finally, the electrode 2 and the olefin fiber cloth 1 are sewn together and fixed with suture 3 so that the electrode 2 is in close contact with the conductive layer 4.

[0043] Preferably, the conductive paste is one or more of silver paste, carbon nanotube paste, and graphene paste. Adding at least one layer of conductive paste between the carbon fiber electrode 2 and the graphene-coated fiber cloth 1 can make the bonding between the electrode 2 and the graphene-coated fiber cloth 1 tighter, and also helps to reduce the resistance of the electrode 2. Specifically, the contact resistance between the electrode 2 and the conductive paste is tested using the four-wire method, and the measured contact resistance of the electrode is <0.1Ω·cm.

[0044] Example 6 Based on the flexible conductive fabrics in the above embodiments, the present invention provides a flexible fabric, see [link]. Figures 3-5 As shown, it includes a substrate fabric 5 and the aforementioned flexible conductive fabric, with the flexible conductive fabric fixedly connected to the substrate fabric 5.

[0045] Preferably, the flexible conductive fabric and the substrate fabric 5 are fixed together by stitching.

[0046] Preferably, such as Figure 6 As shown, the substrate fabric 5 has a reserved notch 5.1 that matches the flexible conductive fabric. The flexible conductive fabric fills the reserved notch 5.1, and the outer edge of the polypropylene fiber cloth 1 in the flexible conductive fabric is sewn to the substrate fabric 5. The sewing refers to joining the outer edge of the polypropylene fiber cloth 1 to the edge of the substrate fabric 5 at the reserved notch 5.1, and then using threads of the same material as the substrate fabric 5 to weave and fix the substrate fabric 5 and the polypropylene fiber cloth 1 together, thus forming a complete flexible fabric. Alternatively, the outer edge of the polypropylene fiber cloth 1 overlaps with the edge of the substrate fabric 5 at the reserved notch, and then the two are sewn together using stitching. Preferably, the polypropylene fiber cloth 1 is completely sewn onto the substrate fabric 5 using a lay-up sewing machine.

[0047] Example 7 Based on the flexible fabric of Embodiment 6 described above, this flexible fabric can be applied to various flexible wearable products. Specifically, the flexible fabric can be made into various heated garments through its own electroheating function, such as heated scarves, heated vests, heated socks, flexible heated clothing, medical heating devices, etc. It can also utilize the information transmission function of the flexible conductive fabric when energized as other flexible devices, such as flexible sensors. Due to the bending resistance and stability of the electrodes 2 in the flexible conductive fabric, not only is the durability of the heated garment improved, but it also supports washing, further enhancing the practicality and convenience of the final heated garment.

[0048] Experimental tests were conducted on the flexible conductive fabrics in the above embodiments. The carbon fiber electrode 2 sewn onto the olefin-coated fabric 1 did not affect the conductivity or heating effect of the olefin-coated fabric 1 itself. Furthermore, after dozens or even hundreds of bends, the resistance of the carbon fiber electrode 2, the conductivity (resistance change <1%) of the entire flexible conductive fabric, and its mechanical strength remained well maintained. This indicates that the flexible conductive fabric can not only be used as a flexible electric heating device but also as other flexible devices, such as flexible sensors.

[0049] In addition, the flexible conductive fabric in the above embodiments was subjected to high temperature resistance test. The carbon fiber electrode 2 and the olefin-coated fiber fabric 1 can work stably at a high temperature of 600°C, which proves its excellent high temperature resistance. This characteristic makes it have broad potential for high temperature environment applications.

[0050] In the above embodiments, the carbon fiber electrode sample with olefin-coated fiber cloth has a hot insulation resistance greater than 100 MΩ and a cold insulation resistance greater than 1000 MΩ at 500V. Furthermore, when used at low temperatures (<100℃), the temperature difference between the electrode portion and the heating portion does not exceed 10℃, resulting in more uniform surface heating.

[0051] It should be noted that in the description of this invention, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0057] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be construed as covering all changes and modifications that encompass the true intent and scope of the invention. Any and all equivalent scope and content within the scope of the claims should be considered to remain within the intent and scope of the invention.

Claims

1. A flexible conductive fabric, comprising a propylene fiber fabric (1) and at least two electrodes (2), characterized in that: The electrodes (2) are made of flexible carbon fiber material. Two electrodes (2) are placed on the olefin fiber cloth (1) at intervals. The electrodes (2) are attached to the front side of the olefin fiber cloth (1) and are fixedly connected to the olefin fiber cloth (1) by stitching them together.

2. The flexible conductive fabric according to claim 1, characterized in that: The electrode (2) is sewn onto the olefin fiber cloth (1) by a suture (3).

3. The flexible conductive fabric according to claim 2, characterized in that: The suture (3) is a carbon fiber thread. The suture (3) and the electrode (2) are an integral structure. The thread end of the suture (3) away from the electrode (2) is sewn and fixed to the olefin fiber cloth (1) so that the electrode (2) and the olefin fiber cloth (1) are in close contact.

4. The flexible conductive fabric according to claim 2, characterized in that: The suture (3) is one or more of the following: carbon fiber thread, sewnable silver thread, quartz thread, nylon thread, and cotton thread.

5. The flexible conductive fabric according to claim 1, characterized in that: The graphene-coated fiber cloth (1) includes an inorganic fiber substrate and a continuous graphene film prepared on the surface of the inorganic fiber substrate. The inorganic fiber substrate includes one or more of glass fiber cloth, ceramic fiber cloth, basalt fiber cloth, and quartz fiber cloth.

6. The flexible conductive fabric according to claim 5, characterized in that: The olefin-coated fiber cloth (1) is an olefin-coated fiber cloth (1) containing a copper mesh inside.

7. The flexible conductive fabric according to any one of claims 1-6, characterized in that: The coated fiber cloth (1) is coated with conductive paste at the position corresponding to the electrode (2). The electrode (2) and the conductive layer (4) formed after the conductive paste is cured are closely attached and sewn together with the coated fiber cloth (1).

8. A method for preparing a flexible conductive fabric as described in claim 7, characterized in that, include: Electrodes are made by cutting sheet-like or strip-like carbon fiber materials (2). Select an area on the polypropylene fiber cloth (1) for mounting the electrode (2), and brush the conductive paste onto the selected area on the polypropylene fiber cloth (1); The electrode (2) is attached to the conductive layer (4) formed after the conductive paste has been cured; The electrode (2) and the olefin fiber cloth (1) are sewn together with suture (3) so that the electrode (2) is in close contact with the conductive layer (4).

9. The method for preparing the flexible conductive fabric according to claim 8, characterized in that: The conductive paste is one or more of silver paste, carbon nanotube paste, and graphene paste.

10. A flexible fabric, characterized in that: It includes a substrate fabric (5) and a flexible conductive fabric of any one of claims 1-7, wherein the flexible conductive fabric is fixedly connected to the substrate fabric (5).

11. The flexible fabric according to claim 10, characterized in that: The substrate fabric (5) has a reserved gap that matches the flexible conductive fabric. The flexible conductive fabric is filled in the reserved gap, and the outer edge of the olefin fiber cloth (1) in the flexible conductive fabric is sewn and fixed to the substrate fabric (5).

12. An application of the flexible fabric as described in claim 10 in a flexible wearable product.

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