Antibacterial insole with self-powered friction sewing structure and preparation method of antibacterial insole

Abstract

The invention discloses an antibacterial insole with a self-powered friction sewing structure, comprising: an electroporation sterilization structure, which comprises a nanowire layer, an electrode layer and a spacer layer, and the spacer layer is located below the nanowire layer and the electrode layer; the negative electrode structure comprises a conductive fabric layer and a negative electrode material layer which are connected in sequence, and the conductive fabric layer is located on the negative electrode material layer; the positive electrode structure comprises a positive electrode material layer and a substrate layer which are attached to each other; the plurality of interval cushioning materials are uniformly distributed on the negative electrode material layer and the positive electrode material layer to form a hollow structure; the negative electrode material layer adopts an electric polarity material different from that of the positive electrode material layer; the negative electrode structure, the interval cushioning material and the positive electrode structure are combined through a sewing technology. According to the self-powered friction sewing structure, the preparation method thereof and the antibacterial insole, the self-powered friction sewing structure is simple in process and integrally formed, has the advantages of being high in durability and stable in voltage output, and is free of side effects and antibacterial.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to an antibacterial insole with a self-powered friction structure and a preparation method thereof. Background Art

[0002] With the continuous improvement of living standards in modern society, people's expectations for clothing are no longer limited to its basic functions of warmth and shelter, but also pursue a sense of fashion and technology. In this context, shoes with antibacterial functions, as a product that combines medical and technological functions, have been favored by consumers. However, most of the antibacterial shoes on the market currently rely on traditional antibacterial sprays and antibacterial materials, such as silver ion technology, mixed antibacterial agents, dehumidification and deodorization to reduce bacteria, and release antibacterial ingredients or change the environment inside the shoes, thereby reducing the growth of bacteria and fungi and keeping the shoes clean and hygienic. The use of these antibacterial substances has obvious limitations. First, the service life of these antibacterial substances is relatively short, and they need to be replaced frequently, which brings inconvenience to users. Secondly, the frequent use of antibacterial substances may also cause bacteria to have antibacterial properties and cause allergies and side effects to the human body, further affecting the user experience.

[0003] Therefore, it is necessary to improve the antibacterial insole material in the prior art to solve the above problems. Summary of the invention

[0004] The present invention overcomes the deficiencies of the prior art and provides an antibacterial insole with a self-powered friction stitching structure and a preparation method thereof.

[0005] To achieve the above object, the technical solution adopted by the present invention is: an antibacterial insole with a self-powered friction stitching structure, comprising: a spacer cushioning material, and a negative electrode structure and a positive electrode structure respectively arranged on both sides of the spacer cushioning material, characterized in that:

[0006] The negative electrode structure and the positive electrode structure are respectively located above and below the spacer cushioning material;

[0007] The negative electrode structure comprises a conductive fabric layer and a negative electrode material layer connected in sequence, wherein the conductive fabric layer is located above the negative electrode material layer;

[0008] The positive electrode structure includes a positive electrode material layer, and a substrate layer disposed on the positive electrode material layer;

[0009] The spacer shock-absorbing material is arranged between the negative electrode material layer and the positive electrode material layer, and is connected to the negative electrode material layer and the positive electrode material layer respectively, and the shock-absorbing direction of the spacer shock-absorbing material is a vertical direction;

[0010] The electrical polarity of the negative electrode material layer is opposite to that of the positive electrode material layer;

[0011] An electroporation sterilization structure is arranged above the negative electrode structure, and the electroporation sterilization structure is fixedly connected to the negative electrode structure. The electroporation sterilization structure includes, from top to bottom, a nanowire layer, an electrode layer, and a spacer layer. A plurality of wires are respectively arranged between the conductive fabric layer and the nanowire layer and between the positive electrode material layer and the electrode layer, and the wires are respectively used to transmit current.

[0012] In a preferred embodiment of the present invention, the material used for the spacer layer is TPU material; the materials used for the nanowire layer and the electrode layer are respectively one of copper-plated aramid, silver-plated aramid, and nickel-plated aramid.

[0013] In a preferred embodiment of the present invention, the negative electrode material layer is made of a negatively charged polymer material, and the positive electrode material layer is made of a positively charged surface conductive yarn and a positively charged polymer material.

[0014] In a preferred embodiment of the present invention, the negatively charged polymer material is polydimethylsiloxane.

[0015] In a preferred embodiment of the present invention, the conductive fabric layer is made of a material selected from the group consisting of conductive fabric and conductive polymer.

[0016] In a preferred embodiment of the present invention, the conductive fabric is one of aluminum foil, woven silver cloth and copper-nickel alloy cloth.

[0017] In a preferred embodiment of the present invention, the spacing shock-absorbing material includes a plurality of sewn layers and a plurality of shock-absorbing bodies, the plurality of sewn layers are arranged in parallel, the plurality of shock-absorbing bodies are respectively arranged between adjacent sewn layers, each of the shock-absorbing bodies is respectively fixedly connected to the adjacent sewn layers, each of the shock-absorbing bodies is a cylinder, the diameter of the shock-absorbing body is 3-5mm, and the height is 2-4mm, the materials used for the plurality of sewn layers and the plurality of shock-absorbing bodies are respectively one of EVA and PU, and the axial directions of the plurality of shock-absorbing bodies are parallel and perpendicular to the surface of the sewn layers.

[0018] In a preferred embodiment of the present invention, the spacing shock-absorbing material is sewn and connected to the negative electrode material layer and the positive electrode material layer respectively by rotating and sewing from inside to outside through upper and lower insertion points, wherein the upper and lower insertion points are the shock-absorbing bodies.

[0019] In a preferred embodiment of the present invention, the base layer is made of a hydrophobic polymer material, and the base layer has a thickness of 0.2 mm to 0.6 mm.

[0020] To achieve the above-mentioned purpose, the second technical solution adopted by the present invention is: a method for preparing an antibacterial insole with a self-powered friction stitching structure, comprising the following steps:

[0021] S1: subjecting the prepared negative electrode polymer dispersion to a vacuum degassing treatment, and then evenly applying it to the first mold, and heating to form a plurality of negative electrode polymer semi-cured layers; laying the plurality of said semi-cured layers flat on both sides of the conductive fabric layer, and placing them in an oven for heating and curing to form a negative electrode structure;

[0022] S2: The prepared negative electrode polymer material dispersion is subjected to vacuum degassing treatment, then scraped onto the second mold, and heated to form a polymer semi-cured layer, which is then spread flat on one side of the positive electrode material layer and placed in an oven for heating and curing to obtain a positive electrode structure;

[0023] S3: Place a number of the spacer cushioning materials evenly below the negative electrode structure in S1, and drop the negative electrode polymer dispersion in S1 onto the spacer cushioning materials; place the prepared positive electrode structure below the spacer cushioning material, stack the nanowire layer, electrode layer, and spacer layer on top of the negative electrode structure in order from top to bottom, and set a number of wires between the conductive fabric layer and the nanowire layer, and between the positive electrode material layer and the electrode layer, and put the whole into a stitching machine to stitch up and down to make the structure tightly combined, so as to prepare an antibacterial insole with a self-powered friction stitching structure.

[0024] The present invention solves the defects existing in the background technology and has the following beneficial effects:

[0025] (1) The present invention provides a self-powered friction structure, including components such as a negative electrode structure, a positive electrode structure and an interval shock-absorbing material. When the upper material layer is pressed by the outside, the negative electrode material layer can overcome the elastic force of the interval shock-absorbing material and generate electric charge by contact and friction with the positive electrode material layer. When the pressure decreases or disappears, the interval shock-absorbing material elastically recovers, so that the negative electrode material layer is separated from the positive electrode material layer. In this process, mechanical energy is converted into electrical energy. Compared with the antibacterial insole material in the prior art, the electrical energy is effectively conducted through the conductive fabric layer to provide power support for related equipment, thereby realizing the self-powered function and providing stable power to the equipment without an external power supply.

[0026] (2) In the present invention, one of EVA and PU is used as the spacer and shock-absorbing material, which can deform when pressed and quickly return to its original shape after the pressure disappears. Compared with the prior art, the self-powered friction structure can smoothly achieve contact and separation between the negative electrode material layer and the positive electrode material layer when subjected to external pressure, thereby generating electrical energy.

[0027] (3) In the present invention, the design of multiple suture path shapes allows them to be selected and combined as needed to meet the requirements of various complex shapes and sizes. Compared with the prior art, the structures of different paths can adapt to different degrees of bending and twisting, so that the self-powered friction structure can better fit on wearable devices or other objects, thereby improving durability, energy conversion efficiency and comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 This is a schematic diagram of the self-powered friction structure of the embodiment;

[0030] Figure 2 1.5cm interval shock absorbing material 6×6cm with 3mm height in Example 1 2 Press output voltage graph;

[0031] Figure 3 Comparative Example 1 Output voltage diagram of the distribution of 1cm interval shock absorbing material particles at 3mm height;

[0032] Figure 4 Comparison sample 2: Output voltage diagram of the distribution of shock absorbing material particles at 2.4cm intervals with a height of 3mm;

[0033] Figure 5 Antibacterial effect diagram of the control group, Example 1, and Comparative Example 2

[0034] In the figure: 1. Negative electrode structure; 2. Positive electrode structure; 3. Spacer cushioning material; 4. Electroporation sterilization structure; 5. Conductive fabric layer; 6. Negative electrode material layer; 7. Positive electrode material layer; 8. Base layer; 9. Electrode layer; 10. Nanowire layer; 11. Spacer layer. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0039] like Figure 1 As shown, an antibacterial insole with a self-powered friction stitching structure includes: a spacer cushioning material 3, and a negative electrode structure 1 and a positive electrode structure 2 respectively arranged on both sides of the spacer cushioning material 3, characterized in that:

[0040] The negative electrode structure 1 and the positive electrode structure 2 are respectively located above and below the spacing cushioning material 3;

[0041] The negative electrode structure 1 comprises a conductive fabric layer 5 and a negative electrode material layer 6 connected in sequence, and the conductive fabric layer 5 is located above the negative electrode material layer 6;

[0042] The positive electrode structure 2 includes a positive electrode material layer 7 and a substrate layer 8 disposed on the positive electrode material layer 7;

[0043] The spacer shock absorbing material 3 is disposed between the negative electrode material layer 6 and the positive electrode material layer 7, and is connected to the negative electrode material layer 6 and the positive electrode material layer 7 respectively, and the shock absorbing direction of the spacer shock absorbing material 3 is the vertical direction;

[0044] The electrical polarity of the negative electrode material layer 6 is opposite to that of the positive electrode material layer 7;

[0045] An electroporation sterilization structure 4 is arranged above the negative electrode structure 1, and the electroporation sterilization structure 4 is fixedly connected to the negative electrode structure 1. The electroporation sterilization structure 4 includes, from top to bottom, a nanowire layer 10, an electrode layer 9, and a spacer layer 11. A plurality of wires are arranged between the conductive fabric layer 5 and the nanowire layer 10, and between the positive electrode material layer 7 and the electrode layer 9, respectively, and the wires are used to transmit current.

[0046] The negative electrode material layer 6 is made of a negatively charged polymer material, and the positive electrode material layer 7 is made of a positively charged surface conductive yarn and a positively charged polymer material. The base material is EVA, and the negatively charged polymer material is one of polydimethylsiloxane, polydimethylsiloxane doped with polytetrafluoroethylene powder, polyvinyl chloride and fluororubber.

[0047] The conductive fabric layer 5 is made of one of conductive fabric and conductive polymer. The conductive fabric is one of aluminum foil, woven silver cloth and copper-nickel alloy cloth, with a thickness of 0.08 mm, and is preferably a copper-nickel alloy fabric with a resistance less than 0.3Ω.

[0048] Conductive fabric or conductive polymer is used as the conductive fabric layer 5. These conductive fabrics and conductive polymers have good conductivity, which can ensure that the generated electric energy is effectively conducted during the operation of the self-powered friction structure, and provide stable and reliable power support for related equipment. In addition, the conductive fabric and conductive polymer also have certain flexibility and cuttability, which can meet the needs of self-powered friction structures of different shapes and sizes, and are convenient for large-scale production and application.

[0049] The conductive fabric layer 5 is responsible for conducting the electrical energy generated by the self-powered friction structure. In order to ensure its superior performance and controllable cost, the conductive fabric can be made of knitted silver cloth, woven silver cloth and copper-nickel alloy cloth and other materials, all of which have excellent conductivity and can efficiently transmit electrical energy to the desired location. At the same time, these materials also perform well in terms of washing resistance and comfort, ensuring stability in long-term use and the comfort of user experience. During the preparation process, the thickness of the conductive fabric layer 5 not only ensures the stability of the conductive performance, but also realizes the lightness and thinness of the structure, thereby reducing the weight and volume of the entire self-powered friction structure. In addition, the thickness of the conductive fabric layer 5 also directly affects the content of the negative electrode material layer in the overall structure, which can further regulate the electrical properties of the self-powered friction structure, such as key indicators such as output voltage, current and power, to meet the needs of different application scenarios.

[0050] The positive electrode material layer 7 is made of electrically positive conductive yarn or high molecular polymer material. The negative electrode material layer 6 is made of a different electrical polarity material from the positive electrode material layer 7. Specifically, the positive electrode material layer 7 is made of aluminum foil, copper-nickel alloy cloth or high molecular polymer material.

[0051] The self-powered friction structure achieves efficient energy conversion by selecting electronegative polymer materials as the negative electrode material layer 6 and electrically positive surface conductive yarns or polymer materials as the positive electrode material layer 7. This material combination enables the structure to generate charge transfer during the pressing and separation process, providing stable and reliable power support for wearable devices and the like. At the same time, the selected materials ensure the stability and durability of the structure, so that the self-powered friction structure has a longer service life and better performance in practical applications.

[0052] The base layer 8 is made of a hydrophobic polymer material, and the thickness of the base layer 8 is 0.4 mm. The preferred embodiment is a hydrophobic polymer material formed by thermal curing of TPU.

[0053] The spacer layer 11 is made of TPU material and is printed into a mesh structure with a thickness of 0.1 mm by a 3D printer.

[0054] The materials used for the nanowire layer 10 and the electrode layer 9 are respectively one of copper-plated aramid, silver-plated aramid, and nickel-plated aramid. The weaving patterns of the materials used for the nanowire layer 10 and the electrode layer 9 are both plain weave patterns. The nanowire layer grows nanowires on the surface based on the above materials through an anodizing process.

[0055] The spacing cushioning material 3 includes a plurality of sewn layers and a plurality of cushioning bodies. The plurality of sewn layers are arranged in parallel. The plurality of cushioning bodies are arranged between adjacent sewn layers. Each cushioning body is fixedly connected to the adjacent sewn layers respectively. Each cushioning body is a cylinder. The diameter of the cushioning body is 3-5mm and the height is 2-4mm. The materials used for the plurality of sewn layers and the plurality of cushioning bodies are respectively one of EVA and PU. The axial directions of the plurality of cushioning bodies are parallel and perpendicular to the surface of the sewn layers.

[0056] The hydrophobic layer formed by thermal curing of TPU has good hydrophobic properties, which can effectively prevent moisture from penetrating into the friction structure, thereby protecting the internal structure from the influence of a humid environment. This is crucial to ensure the stability and reliability of the self-powered friction structure, especially when used in an environment with high humidity. Controlling the thickness of the base layer 8 to 0.3 mm can achieve a thin and light structure while ensuring hydrophobic properties, which helps to reduce the weight and volume of the entire self-powered friction structure.

[0057] The entire upper layer is in a pressed state so that the negative electrode material layer 6 overcomes the elastic force of the spacer cushioning material 3 and contacts the positive electrode material layer 7 along the first direction for friction to generate electric charge; when the pressed pressure is less than the elastic force of the spacer cushioning material 3, the spacer cushioning material 3 elastically recovers, and the upper layer moves and separates relative to the positive electrode material layer 7 along the extension direction of the first direction, generating voltage, which is conducted through the conductive fabric layer 5 to form current.

[0058] The sewing method of the interval cushioning material 3 and the negative electrode material layer 6 and the positive electrode material layer 7 is to sew from top to bottom and rotate from the inside to the outside, wherein the insertion point of the upper and lower insertion is the cushioning body, and from the inside to the outside, the cushioning column material at the center position gradually rotates and extends to the outside. The design of the suture molding technology makes the structure more stable and improves its durability. In addition, the structure is easy to cut at will, adapts to the needs of large-scale production, and provides an efficient and reliable energy supply solution for wearable devices and other fields.

[0059] If only the interval cushioning material, the negative electrode structure 1 and the positive electrode structure 2 are used, then this part is usually placed in the tibia, midfoot and heel of the foot, and the upper and lower parts of the insole are tightly combined by sewing to form a complete insole. The insole body is made of the self-powered friction structure to achieve energy self-sufficiency of the insole. The self-powered friction structure can effectively convert external pressure and separation into electrical energy, providing stable power support for the wearable device in the insole. This avoids the limitation that traditional insoles need to rely on external power supply, and improves the convenience and flexibility of use. Part or all of the insole body is made of the self-powered friction structure, and the forefoot part or the entire sole part of the insole can be made of the self-powered friction structure, which can be flexibly adjusted according to specific needs and application scenarios. This insole is made of integrated fabric, the overall structure is tight and complete, and does not contain any mechanical parts. This makes the insole have good resilience, flexibility and plasticity, can fit different foot shapes, and provide a comfortable wearing experience. At the same time, its washability and stability are also very good. Even after repeated washing, it can still maintain its original shape and performance, ensuring long-term use.

[0060] To achieve the above object, the second technical solution adopted by the present invention is: a method for preparing a self-powered friction suture structure, comprising the following steps:

[0061] S1: subjecting the prepared negative electrode polymer dispersion to vacuum degassing treatment, and then evenly scraping it onto the first mold, and heating it to form a plurality of negative electrode polymer semi-cured layers; laying the plurality of semi-cured layers flat on both sides of the conductive fabric layer, and placing them in an oven for heating and curing to form a negative electrode structure;

[0062] S2: The prepared negative electrode polymer material dispersion is subjected to vacuum degassing treatment, then scraped onto the second mold, and heated to form a polymer semi-cured layer, which is then spread flat on one side of the positive electrode material layer and placed in an oven for heating and curing to obtain a positive electrode structure;

[0063] S3: Place a number of spacer cushioning materials evenly below the negative electrode structure in S1, and drop the negative electrode polymer dispersion in S1 onto the spacer cushioning materials; place the prepared positive electrode structure below the spacer cushioning material, stack the nanowire layer, electrode layer, and spacer layer on top of the negative electrode structure in order from top to bottom, and set a number of wires between the conductive fabric layer and the nanowire layer, and between the positive electrode material layer and the electrode layer, and put the whole into a stitching machine to stitch up and down to make the structure tightly combined, so as to prepare an antibacterial insole with a self-powered friction stitching structure.

[0064] Embodiment 1

[0065] The electroporation nanowire layer is copper-plated aramid, the negative electrode material layer 6 is an electronegative polymer material polydimethylsiloxane, the conductive fabric layer 5 is made of copper-nickel alloy cloth, the positive electrode material layer 7 is made of positively charged copper-plated fabric copper-nickel alloy cloth, the base layer 8 is made of EVA, and the spacer and shock-absorbing material 3 is an EVA gasket with a diameter of 5mm and a height of 3mm and a silicon tube height of 3mm.

[0066] The specific preparation process is as follows:

[0067] S1. Preparation of electroporated nanowire layer: The copper-coated aramid was cut into the size shown in the figure, then washed with acetone and ultrasonicated. The copper-coated aramid was manufactured by anodization process in 1.0 m NaOH solution at 1.5 mA cm -2 Nanowires were grown on the surface of copper-coated aramid fiber under a fixed current density and anodization duration of 15.0 min.

[0068] S2, preparation of negative electrode structure 1: Use polydimethylsiloxane and curing agent, add in a ratio of 10:1. In order to improve the contact separation power generation efficiency between the friction layers, high dielectric materials barium titanate and carbon nanotube powder can be added. Next, the prepared solution is fully mixed and vacuum treated to eliminate the bubbles therein. Subsequently, the treated solution is poured into the pre-designed first mold and evenly applied to a thickness of 0.3 mm. Place the first mold in an oven and bake it at 70°C for 10 minutes to pre-cure it. After taking it out, fit the cut copper-nickel fabric of appropriate size to the pre-cured material, press gently to expel the internal air, and ensure that the two fit tightly. Put the insole into the oven again and bake it at 70°C for 30 minutes to fully cure it. Follow the same steps to complete the curing of the negative electrode polymer on the other side of the conductive fabric layer 5, and finally form a complete negative electrode structure 1.

[0069] S3, preparation of positive electrode structure 2: the prepared polymer dispersion polydimethylsiloxane is subjected to vacuum degassing treatment using the same process as step S1, then coated on the second mold, and heated to form a hydrophobic semi-cured layer; the semi-cured layer is spread flat on one side of the copper-plated fabric, and placed in an oven for heating and curing to obtain the positive electrode structure 2.

[0070] S4. Preparation of self-powered friction structure: Place EVA shock-absorbing columns with a diameter of 5 mm and a height of 3 mm at an equal interval of 15 mm between the prepared positive and negative friction layers as elastic isolation materials for contact separation; sew the positions of the shock-absorbing columns with a suturing machine to complete the preparation of the self-powered friction structure.

[0071] like Figure 2 As shown, the output voltage obtained by pressing the sample of Example 1 by the pressing head on the measuring device shows that the output voltage of Example 1 is stable. The voltage at the position of the nanowire is increased due to the tip effect when the electroporation nanowire layer is connected, completing the high pressure sterilization.

[0072] like Figure 3 As shown, for the voltage output by the entire insole after pressing, it can be seen that the insole prepared by the preparation method has a stable output voltage.

[0073] Comparative Example 1

[0074] The difference between the comparative example 1 and the embodiment 1 is that the distribution density of the spacer and shock-absorbing material 3 is different. In this embodiment, the spacer and shock-absorbing material 3 adopts a shock-absorbing EVA gasket with a diameter of 5 mm and a height of 3 mm and a height of 3 mm.

[0075] like Figure 4 As shown, the output voltage and antibacterial effect are obtained by pressing the sample of comparison sample 1 with the pressing head on the measuring device.

[0076] Comparative Example 2

[0077] The difference between the comparative example 2 and the embodiment 1 is that the distribution density of the spacer cushioning material 3 is different. In this embodiment, the spacer cushioning material 3 adopts a cushioning EVA gasket with a diameter of 5 mm and a height of 3 mm and a height of 3 mm.

[0078] like Figure 5 As shown, the output voltage is obtained by pressing the sample of the comparison sample 2 by the pressing head on the measuring device.

[0079] The present application provides a self-powered friction structure, a preparation method thereof and an antibacterial insole. This self-powered friction structure not only has a simple process, but also realizes integrated molding, has the characteristics of high durability and stable voltage output, and is convenient for arbitrary cutting to meet the needs of large-scale production.

[0080] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. An antibacterial insole with a self-powered friction stitching structure, comprising: A spacer shock absorbing material (3), and a negative electrode structure (1) and a positive electrode structure (2) respectively arranged on two sides of the spacer shock absorbing material (3), characterized in that: The negative electrode structure (1) and the positive electrode structure (2) are respectively located above and below the spacer shock absorbing material (3); The negative electrode structure (1) comprises a conductive fabric layer (5) and a negative electrode material layer (6) connected in sequence, wherein the conductive fabric layer (5) is located above the negative electrode material layer (6); The positive electrode structure (2) comprises a positive electrode material layer (7) and a substrate layer (8) arranged on the positive electrode material layer (7); The spacer shock-absorbing material (3) is arranged between the negative electrode material layer (6) and the positive electrode material layer (7), and is respectively connected to the negative electrode material layer (6) and the positive electrode material layer (7), and the shock-absorbing direction of the spacer shock-absorbing material (3) is a vertical direction; The electrical polarity of the negative electrode material layer (6) is opposite to the electrical polarity of the positive electrode material layer (7); An electroporation sterilization structure (4) is arranged above the negative electrode structure (1), and the electroporation sterilization structure (4) is fixedly connected to the negative electrode structure (1). The electroporation sterilization structure (4) comprises, from top to bottom, a nanowire layer (10), an electrode layer (9), and a spacer layer (11). A plurality of wires are arranged between the conductive fabric layer (5) and the nanowire layer (10), and between the positive electrode material layer (7) and the electrode layer (9), respectively, and the wires are used to transmit current.

2. The antibacterial insole with a self-powered friction stitching structure according to claim 1, characterized in that: The spacer layer (11) is made of TPU material; The materials used for the nanowire layer (10) and the electrode layer (9) are respectively one of copper-plated aramid, silver-plated aramid, and nickel-plated aramid.

3. The antibacterial insole with a self-powered friction stitching structure according to claim 1, characterized in that: The material used in the negative electrode material layer (6) is a negatively charged polymer material, and the material used in the positive electrode material layer (7) is one of a positively charged surface conductive yarn and a positively charged polymer material.

4. The antibacterial insole with a self-powered friction stitching structure according to claim 3, characterized in that: The negatively charged polymer material is polydimethylsiloxane.

5. The antibacterial insole with a self-powered friction stitching structure according to claim 1, characterized in that: The conductive fabric layer (5) is made of a material selected from the group consisting of conductive fabric and conductive polymer.

6. The antibacterial insole with a self-powered friction stitching structure according to claim 5, characterized in that: The conductive fabric is one of aluminum foil, woven silver cloth and copper-nickel alloy cloth.

7. The antibacterial insole with a self-powered friction stitching structure according to claim 1, characterized in that: The spacing shock-absorbing material (3) comprises a plurality of sewn layers and a plurality of shock-absorbing bodies, wherein the sewn layers are arranged in parallel, and the plurality of shock-absorbing bodies are arranged between adjacent sewn layers, respectively, and each of the shock-absorbing bodies is fixedly connected to an adjacent sewn layer, respectively, and each of the shock-absorbing bodies is a cylinder, and the diameter of the shock-absorbing body is 3-5 mm and the height is 2-4 mm. The materials used for the sewn layers and the plurality of shock-absorbing bodies are respectively one of EVA and PU, and the axial directions of the plurality of shock-absorbing bodies are parallel and perpendicular to the surface of the sewn layers.

8. The antibacterial insole with a self-powered friction stitching structure according to claim 7, characterized in that: The spacing shock-absorbing material (3) is sewn and connected to the negative electrode material layer (6) and the positive electrode material layer (7) respectively by means of vertical insertion and rotational sewing from inside to outside, wherein the vertical insertion insertion point is the shock-absorbing body.

9. The antibacterial insole with a self-powered friction stitching structure according to claim 1, characterized in that: The base layer (8) is made of a hydrophobic polymer material, and the thickness of the base layer (8) is 0.2 mm to 0.6 mm.

10. A method for preparing an antibacterial insole with a self-powered friction stitching structure, based on the antibacterial insole with a self-powered friction stitching structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: subjecting the prepared negative electrode polymer dispersion to a vacuum degassing treatment, then evenly scraping it onto a first mold, and heating it to form a plurality of negative electrode polymer semi-cured layers; laying the plurality of said semi-cured layers flat on both sides of a conductive fabric layer (5), and placing them in an oven for heating and curing to form a negative electrode structure (1); S2: The prepared negative electrode polymer material dispersion is subjected to vacuum degassing treatment, and then coated on the second mold and heated to form a polymer semi-cured layer. The semi-cured layer is then spread on one side of the positive electrode material layer (7) and placed in an oven for heating and curing to obtain a positive electrode structure (2); S3: a plurality of the spacer cushioning materials (3) are evenly placed below the negative electrode structure (1) in S1, and the negative electrode polymer dispersion in S1 is dripped onto the spacer cushioning material (3); the prepared positive electrode structure (2) is placed below the spacer cushioning material (3), and the nanowire layer (10), the electrode layer (9), and the spacer layer (11) are stacked from top to bottom on top of the negative electrode structure (1), and a plurality of wires are arranged between the conductive fabric layer (5) and the nanowire layer (10), and between the positive electrode material layer (7) and the electrode layer (9), and the whole is placed in a stitching machine and stitched up and down to make the structure tightly combined, thereby preparing an antibacterial insole with a self-powered friction stitching structure.

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