CN117612458A - Micro-nano fiber composite flexible flag for wind driven friction power generation - Google Patents
Micro-nano fiber composite flexible flag for wind driven friction power generation Download PDFInfo
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- CN117612458A CN117612458A CN202311588053.5A CN202311588053A CN117612458A CN 117612458 A CN117612458 A CN 117612458A CN 202311588053 A CN202311588053 A CN 202311588053A CN 117612458 A CN117612458 A CN 117612458A
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- 239000000758 substrate Substances 0.000 claims description 55
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- 239000003989 dielectric material Substances 0.000 claims description 6
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- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 3
- 229910002113 barium titanate Inorganic materials 0.000 claims description 3
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 claims description 3
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Classifications
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/092—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising epoxy resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/095—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyurethanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D25/00—Woven fabrics not otherwise provided for
- D03D25/005—Three-dimensional woven fabrics
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/10—Patterned fabrics or articles
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B21/06—Patterned fabrics or articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D5/00—Other wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F17/00—Flags; Banners; Mountings therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
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- B32B2262/02—Synthetic macromolecular fibres
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- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
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- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
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- G09F2017/0033—Flag materials
Landscapes
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- Textile Engineering (AREA)
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Abstract
The invention discloses a micro-nano fiber composite flexible flag for wind driven friction power generation, and relates to the field of functional textiles and energy collecting devices. The invention has simple structure and high triboelectric output performance, not only avoids the problems of high critical wind speed, complex structure and difficult transportation and assembly of the rotary generating device, but also overcomes the defects of small friction charge generation amount, small friction contact area and low electric output power of the flow-induced flutter type friction generating device during working.
Description
Technical Field
The invention relates to the field of functional textiles and energy collecting devices, in particular to a micro-nano fiber composite flexible flag for wind driven friction power generation.
Background
In order to achieve the coordination and unification of ecological benefits and economic benefits, power generation technologies based on green energy sources have attracted more and more attention.
In many green power generation technologies, the emission of greenhouse gases generated by nuclear energy is extremely low, but the potential leakage risk of the nuclear energy can cause great harm to the environment and human bodies; solar photovoltaic power generation is a renewable energy power generation technology with the most sustainable development ideal characteristics, but has the defects of low energy density, large occupied area, strong regional dependence and the like; the tidal power generation has the defects of short available period, complex and expensive equipment and the like although the tidal power generation has no pollution and high power generation efficiency. Wind energy has proven to be an excellent alternative to fossil fuels because of its renewable, clean, ubiquitous advantages. The wind power generation device for improving the wind energy collection efficiency is mainly characterized in that: (1) The azimuth angle of the power generation wind cylinder or the fan blade is designed in an adjustable way, or a multi-stage wind impeller is adopted, so that wind energy in different directions can be collected conveniently; (2) Adding an acceleration transmission mechanism and an auxiliary flywheel device, or designing the shape of an air duct to reduce the starting wind power of a fan rotating part; (3) A speed reducing structure is arranged to adjust wind resistance or a wind tower shell is adopted to improve the stability of the power generation structure; (4) The fan blades with different shapes are designed to meet the wind energy collection under different wind speed conditions; (5) The rotary wind wheel is changed into a serial wind blade or a wind bag body is arranged to improve the wind power receiving surface. However, the above-mentioned wind power generation apparatus still has disadvantages such as complicated structure, high critical wind speed, expensive equipment, inconvenience in transportation and maintenance, and generation of large-scale undegradable waste parts.
Friction power generation equipment is used as an emerging energy collection technology, and has great potential in the field of wind energy collection due to the advantages of low cost, light weight, good expandability and high efficiency. The flow-induced vibration friction power generation equipment is based on a vertical contact-separation working mode, wind energy is directly converted into vibration energy of a device, compared with the rotary friction power generation equipment, the middle energy loss is reduced, the initial vibration wind speed is low, the structure is simpler, the waste recovery is more convenient and environment-friendly, and the unique advantages of the flow-induced vibration friction power generation equipment are more favored in the field of collecting micro wind energy. It has been found that nanofiber membranes can provide more friction area, and therefore some practitioners have applied electrospinning techniques to flow-induced flutter friction power generation devices. Phan et al utilize the electrostatic spinning technology, while guaranteeing the light flexibility of the sheet friction power generation material, have raised the flutter frequency of the material, see in particular https:// doi.org/10.1016/j.nanoen.2017.02.005, but the addition of the rubber layer makes the device part more complicated; the Yang et al also utilizes the electrostatic spinning technology to improve the portability of the sheet friction power generation material, and particularly see https:// doi.org/10.1016/j.nanoen.2021.106641, but the PI auxiliary layer reduces the flexibility of the sheet friction power generation material, and the sheet friction power generation material has the defects of small friction power generation amount, small friction contact area and the like during working.
Therefore, how to provide a micro-nano fiber composite flexible flag for wind driven friction power generation, which has simple structure and high friction power output performance, not only avoids the problems of high critical wind speed, complex structure, difficult transportation and assembly of a rotary power generation device, but also overcomes the defects of small friction power generation amount, small friction contact area and low power output of a flow-induced vibration friction power generation device during working, and becomes a technical problem to be solved urgently by a person skilled in the art.
Disclosure of Invention
The invention aims to provide a micro-nano fiber composite flexible flag for wind driven friction power generation, which has the advantages of simple structure and high friction electric output performance, solves the problems of high critical wind speed, complex structure, difficult transportation and assembly and the like of a rotary power generation device, and can overcome the defects of small friction electric charge quantity, small friction contact area and low electric output power of a flow-induced flutter friction power generation device during working.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention discloses a micro-nano fiber composite flexible flag for wind driven friction power generation, which comprises a fabric substrate, a plurality of film layers and a dielectric layer, wherein the film layers are compositely connected to two sides of the fabric substrate, and the dielectric layer is compositely connected to one side, far away from the fabric substrate, of the film layers.
Preferably, the fabric substrate is a composite material of elastic fibers and inelastic fibers, and the composite material adopts a yarn blending, fabric mixed weaving or core spun yarn structure; the elastic fiber is selected from diene elastic fiber, polyurethane fiber, polyether ester elastic fiber or polyolefin elastic fiber; the inelastic fiber is selected from polyester fiber, polyvinyl formal fiber, viscose fiber, para-aramid fiber or high-performance polyethylene fiber; the yarn structure is made of monofilament yarn, multifilament yarn, twisted staple yarn, textured yarn or core spun yarn.
Preferably, the fabric substrate comprises a two-dimensional fabric substrate, a semi-three-dimensional fabric substrate and a three-dimensional fabric substrate, wherein the two-dimensional fabric substrate is made of a two-dimensional woven, weft-knitted or warp-knitted structure; the semi-three-dimensional fabric substrate is made of a semi-three-dimensional woven, warp knitted or weft knitted structure; the three-dimensional fabric substrate is made of a three-dimensional weaving structure, a warp knitting structure, a weft knitting structure, a jacquard structure or a plating structure.
Preferably, the multilayer film layer comprises a conductive layer, a first bonding layer and a second bonding layer, wherein the first bonding layer and the second bonding layer are respectively and compositely connected to two sides of the conductive layer, the first bonding layer is compositely connected with one side of the fabric substrate, and the second bonding layer is compositely connected with one side of the dielectric layer.
Preferably, the material of the first bonding layer is epoxy resin material or amino resin material; the material of the second bonding layer is selected from conductive epoxy resin material or conductive amino resin material.
Preferably, the material of the conductive layer is one or more of metal conductive material, inorganic nonmetallic conductive material and conductive polymer material.
Preferably, the dielectric layer is a superfine fiber structure, and the superfine fiber structure is selected from submicron fibers or nanometer fibers.
Preferably, the dielectric layer material is elastic material or a mixture of elastic material and high dielectric material, and the mixing mode is polymer melting or dissolving mixing before spinning or blending during spinning; the elastic material is thermoplastic polyurethane elastomer rubber, styrene thermoplastic elastomer, ethylene propylene diene monomer rubber, thermoplastic ethylene propylene diene monomer rubber or polyolefin thermoplastic elastomer; the high dielectric material is selected from calcium titanate, magnesium titanate, barium titanate or zinc oxide.
Preferably, the total thickness of the dielectric layer and the multilayer film layer is 2-2000 μm.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention discloses a micro-nano fiber composite flexible flag for wind driven friction power generation, which comprises a fabric substrate, a multi-layer film layer and a dielectric layer, wherein the multi-layer film layer comprises a conductive layer, a first bonding layer and a second bonding layer, the first bonding layer and the second bonding layer are respectively and compositely connected to two sides of the conductive layer, the first bonding layer is compositely connected with one side of the fabric substrate, and the second bonding layer is compositely connected with one side of the dielectric layer.
1) The fabric substrate adopts the conductive fabric structure, and compared with the existing film and flat plate flutter sheet structure, the conductive fabric structure has the characteristics of light weight, softness and elasticity, is beneficial to reducing the initial flutter wind speed and improving the breeze energy collecting capacity;
2) The traditional hard flutter sheets or hard turbine blades are replaced by the flexible wind power generation flag which is simple in structure, can be rolled and folded, and can greatly reduce the difficulty and cost of production, transportation and assembly of wind power generation equipment;
3) The invention adopts the micro-nano composite structure, improves the roughness of the surface of the material, increases the friction contact area and improves the surface charge density of the material on the basis of keeping the overall flexibility and elasticity of the flag, thereby increasing the electrical performance output of the friction power generation equipment and realizing excellent electrical output performance at low wind speed.
In general, the micro-nano fiber composite flexible flag for wind driven friction power generation has the advantages of simple structure and high friction power output performance, solves the problems of high critical wind speed, complex structure, difficult transportation and assembly and the like of a rotary power generation device, and can overcome the defects of small friction power generation amount, small friction contact area and low power output of a flow-induced vibration friction power generation device during working.
Drawings
The invention is further described with reference to the following description of the drawings.
FIG. 1 is a schematic diagram of the micro-nanofiber composite flexible flag for wind driven friction power generation in its entirety and cross section;
FIG. 2 is a schematic view of the structure of a fabric substrate according to the present invention;
FIG. 3 is a schematic diagram of a dielectric layer structure according to the present invention.
Reference numerals illustrate: 1. a fabric substrate; 2. a multi-layer film layer; 21. a conductive layer; 22. a first bonding layer; 23. a second bonding layer; 3. a dielectric layer.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1-3, the micro-nano fiber composite flexible flag for wind driven friction power generation comprises a fabric substrate 1, a multi-layer film layer 2 and a dielectric layer 3, wherein the multi-layer film layer 2 is in composite connection with two sides of the fabric substrate 1, and the dielectric layer 3 is in composite connection with one side, far away from the fabric substrate 1, of the multi-layer film layer 2.
Specifically, the fabric substrate 1 is a composite material of elastic fibers and inelastic fibers, and the composite material adopts a yarn blending, fabric mixed weaving or core spun yarn structure; the elastic fiber is selected from diene elastic fiber, polyurethane fiber, polyether ester elastic fiber or polyolefin elastic fiber; the inelastic fiber is selected from polyester fiber, polyvinyl formal fiber, viscose fiber, para-aramid fiber or high-performance polyethylene fiber; the yarn structure is made of monofilament yarn, multifilament yarn, twisted staple yarn, textured yarn or core spun yarn.
Specifically, the fabric substrate 1 includes a two-dimensional fabric substrate, a semi-three-dimensional fabric substrate, and a three-dimensional fabric substrate, where the two-dimensional fabric substrate is made of a two-dimensional woven, weft-knitted structure or warp-knitted structure; the semi-three-dimensional fabric substrate is made of a semi-three-dimensional woven, warp knitted or weft knitted structure; the three-dimensional fabric substrate is made of a three-dimensional weaving structure, a warp knitting structure, a weft knitting structure, a jacquard structure or a plating structure.
Specifically, the multilayer film layer 2 includes a conductive layer 21, a first bonding layer 22 and a second bonding layer 23, where the first bonding layer 22 and the second bonding layer 23 are respectively and compositely connected to two sides of the conductive layer 21, the first bonding layer 22 is compositely connected to one side of the fabric substrate 1, and the second bonding layer 23 is compositely connected to one side of the dielectric layer 3.
Specifically, the material of the first bonding layer 22 is an epoxy resin material or an amino resin material; the material of the second bonding layer 23 is selected from conductive epoxy resin material or conductive amino resin material. Specifically, the first bonding layer is made of an insulating material and plays a role in increasing the bonding force between the conductive layer and the fabric substrate; specifically, the second bonding layer is made of conductive materials, so that the bonding force between the dielectric layer and the conductive layer is increased while the charge induction between the dielectric layer and the conductive layer is not influenced; specifically, the first bonding layer and the second bonding layer are optional layers, and a user can determine whether to set the first bonding layer and the second bonding layer according to actual conditions.
Specifically, the material of the conductive layer 21 is one or more of a metal conductive material, an inorganic non-metal conductive material and a conductive polymer material. Specifically, the user can determine that the material of the conductive layer is a single material or a plurality of composite materials according to the actual situation; specifically, the conductive layer is provided to assist in charge induction and conduction.
Specifically, the dielectric layer 3 is a superfine fiber structure, and the superfine fiber structure is selected from submicron-level fibers or nanometer-level fibers. Specifically, the dielectric layer is arranged to improve the windward area, resilience and roughness of the flag, and is in frictional contact with the negative friction material to generate and store electric charge.
Specifically, the material of the dielectric layer 3 is elastic material or a mixed material of elastic material and high dielectric material, and the mixing mode is polymer melting or dissolving mixing before spinning or blending during spinning; the elastic material is thermoplastic polyurethane elastomer rubber, styrene thermoplastic elastomer, ethylene propylene diene monomer rubber, thermoplastic ethylene propylene diene monomer rubber or polyolefin thermoplastic elastomer; the high dielectric material is selected from calcium titanate, magnesium titanate, barium titanate or zinc oxide.
Specifically, the total thickness of the dielectric layer 3 and the multilayer film layer 2 is 2-2000 μm.
Example 1
The embodiment provides a micro-nano fiber composite flexible flag for wind driven friction power generation, which comprises a fabric substrate 1, a conductive layer 21 and a dielectric layer 3, wherein the conductive layer 21 is in composite connection with two sides of the fabric substrate 1, and the dielectric layer 3 is in composite connection with one side of the conductive layer 21 far away from the fabric substrate 1.
Specifically, the fabric substrate 1 adopts a warp knitting structure, is formed by interweaving 10% of spandex yarns and 90% of terylene yarns, and the structure is formed by a knitting chain structure and a weft insertion structureA composite tissue; in this example, the grammage is 90g/m 2 The length is 10cm and the width is 7.5cm.
Specifically, the conductive layer 21 is made of silver metal.
Specifically, the material of the dielectric layer 3 is polyurethane nanofiber.
Specifically, the device weighs 1.5050g, when the wind speed is 4.5m/s, flutter occurs in the friction power generation equipment, the maximum effective value of the final output alternating voltage of the power generation device is 3.78V, ten power generation devices are combined through an external rectifying circuit, and the maximum effective value of the final output alternating voltage is 28.92V, so that the commercial capacitor can be successfully charged.
Example 2
The embodiment provides a micro-nano fiber composite flexible flag for wind driven friction power generation, which comprises a fabric substrate 1, a conductive layer 21 and a dielectric layer 3, wherein the conductive layer 21 is in composite connection with two sides of the fabric substrate 1, and the dielectric layer 3 is in composite connection with one side of the conductive layer 21 far away from the fabric substrate 1.
Specifically, the fabric substrate 1 adopts a warp knitting structure, is formed by interweaving 10% of spandex yarns and 90% of terylene yarns, and has a composite structure formed by a knitting chain structure and a weft insertion structure; in this example, the grammage is 120g/m 2 The length is 10cm and the width is 7.5cm.
Specifically, the conductive layer 21 is made of silver metal.
Specifically, the material of the dielectric layer 3 is polyurethane nanofiber.
Specifically, the device weighs 1.7329g, when the wind speed is 4.5m/s, flutter occurs in the friction power generation equipment, the maximum effective value of the final output alternating voltage of the power generation device is 4.28V, ten power generation devices are combined through an external rectifying circuit, and the maximum effective value of the final output alternating voltage is 40.03V, so that the commercial capacitor can be successfully charged.
Example 3
The embodiment provides a micro-nano fiber composite flexible flag for wind driven friction power generation, which comprises a fabric substrate 1, a conductive layer 21 and a dielectric layer 3, wherein the conductive layer 21 is in composite connection with two sides of the fabric substrate 1, and the dielectric layer 3 is in composite connection with one side of the conductive layer 21 far away from the fabric substrate 1.
Specifically, the fabric substrate 1 adopts a warp knitting structure, is formed by interweaving 10% of spandex yarns and 90% of terylene yarns, and has a composite structure formed by a knitting chain structure and a weft insertion structure; in this example, the grammage is 120g/m 2 The length is 12.3cm and the width is 6.1cm.
Specifically, the conductive layer 21 is made of silver metal.
Specifically, the material of the dielectric layer 3 is polyurethane nanofiber.
Specifically, the device weighs 1.7653g, when the wind speed is 4.5m/s, flutter occurs in the friction power generation equipment, the maximum effective value of the final output alternating voltage of the power generation device is 4.66V, ten power generation devices are combined through an external rectifying circuit, and the maximum effective value of the final output alternating voltage is 43.13V, so that the commercial capacitor can be successfully charged.
The application process of the invention is as follows:
when the invention is used, the invention needs to form a power generation device together with a polymethyl methacrylate (PMMA) flagpole and a PMMA friction air duct, and the invention is of a multilayer structure, namely, a piece of conductive knitted fabric is clamped between TPU nanofiber membranes and is supported by the PMMA flagpole in the middle of a pipe, and a silver-plated PTFE plate is attached to the inner wall of the PMMA friction air duct; the invention is a positive electrode material in the whole power generation device, and a PTFE layer attached to the inner wall of a PMMA air duct is a friction negative electrode material in the whole power generation device.
When the air duct is used, firstly, when wind blows into the air duct, the polyurethane nanofiber membrane contacts and rubs the PTFE plate, positive charges are generated on the nanofibers, and negative charges are generated on the PTFE layer; second, when the flag is separated from the wall, an electrostatic potential difference is formed, and the negatively charged PTFE wall tends to induce a positive charge on the electrode due to the electrostatic induction effect; likewise, positively charged polyurethane nanofiber membranes tend to create a negative charge on the conductive knitted base fabric, and thus electrons tend to transfer from the electrode on the PTFE wall to the conductive base fabric through an external circuit until the charge distribution reaches equilibrium; then, when the polyurethane nanofiber membrane contacts and rubs the PTFE plate again, the potential difference established in the final state gradually disappears, electrons flow from the fabric substrate to the silver electrode, the current turns to the opposite direction, and the flag swings in the PMMA friction air duct along with the flow of the air current to generate repeated flutter movement, so that alternating current is continuously generated; and finally, converting the alternating current into direct current by using a full-bridge rectifier and an alternating current parallel circuit for storage.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (9)
1. A micro-nano fiber composite flexible flag for wind-driven friction power generation is characterized in that: the novel fabric comprises a fabric substrate (1), a plurality of film layers (2) and a dielectric layer (3), wherein the film layers (2) are in composite connection with two sides of the fabric substrate (1), and the dielectric layer (3) is in composite connection with one side, far away from the fabric substrate (1), of the film layers (2).
2. A micro-nanofiber composite flexible flag for wind driven friction power generation according to claim 1, wherein: the fabric substrate (1) is made of a composite material of elastic fibers and inelastic fibers, and the composite material adopts a yarn blending, fabric mixed weaving or core spun yarn structure; the elastic fiber is selected from diene elastic fiber, polyurethane fiber, polyether ester elastic fiber or polyolefin elastic fiber; the inelastic fiber is selected from polyester fiber, polyvinyl formal fiber, viscose fiber, para-aramid fiber or high-performance polyethylene fiber; the yarn structure is made of monofilament yarn, multifilament yarn, twisted staple yarn, textured yarn or core spun yarn.
3. A micro-nanofiber composite flexible flag for wind driven friction power generation according to claim 2, wherein: the fabric substrate (1) comprises a two-dimensional fabric substrate, a semi-three-dimensional fabric substrate and a three-dimensional fabric substrate, wherein the two-dimensional fabric substrate is made of a two-dimensional woven structure, a weft-knitted structure or a warp-knitted structure; the semi-three-dimensional fabric substrate is made of a semi-three-dimensional woven, warp knitted or weft knitted structure; the three-dimensional fabric substrate is made of a three-dimensional weaving structure, a warp knitting structure, a weft knitting structure, a jacquard structure or a plating structure.
4. A micro-nanofiber composite flexible flag for wind driven friction power generation according to claim 3, wherein: the multilayer film layer (2) comprises a conductive layer (21), a first bonding layer (22) and a second bonding layer (23), wherein the first bonding layer (22) and the second bonding layer (23) are respectively and compositely connected to two sides of the conductive layer (21), the first bonding layer (22) is compositely connected with one side of the fabric substrate (1), and the second bonding layer (23) is compositely connected with one side of the dielectric layer (3).
5. The micro-nanofiber composite flexible flag for wind driven friction power generation according to claim 4, wherein: the material of the first bonding layer (22) is epoxy resin material or amino resin material; the material of the second bonding layer (23) is selected from conductive epoxy resin material or conductive amino resin material.
6. The micro-nanofiber composite flexible flag for wind driven friction power generation according to claim 4, wherein: the material of the conductive layer (21) is one or more of metal conductive materials, inorganic nonmetallic conductive materials and conductive polymer materials.
7. A micro-nanofiber composite flexible flag for wind driven friction power generation according to claim 1, wherein: the dielectric layer (3) is of a superfine fiber structure, and the superfine fiber structure is made of submicron fibers or nanometer fibers.
8. The micro-nanofiber composite flexible flag for wind driven friction power generation according to claim 7, wherein: the material of the dielectric layer (3) is elastic material or the mixture of elastic material and high dielectric material, and the mixing mode is polymer melting or dissolving mixing before spinning or blending during spinning; the elastic material is thermoplastic polyurethane elastomer rubber, styrene thermoplastic elastomer, ethylene propylene diene monomer rubber, thermoplastic ethylene propylene diene monomer rubber or polyolefin thermoplastic elastomer; the high dielectric material is selected from calcium titanate, magnesium titanate, barium titanate or zinc oxide.
9. A micro-nanofiber composite flexible flag for wind driven friction power generation according to claim 1, wherein: the total thickness of the dielectric layer (3) and the multilayer film layer (2) is 2-2000 mu m.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118137879A (en) * | 2024-04-30 | 2024-06-04 | 苏州元脑智能科技有限公司 | Friction power generation device, server system and server cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118137879A (en) * | 2024-04-30 | 2024-06-04 | 苏州元脑智能科技有限公司 | Friction power generation device, server system and server cabinet |
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