CN119465467A - Preparation method of yarn and velvet type triboelectric fabric and friction nano-generator - Google Patents
Preparation method of yarn and velvet type triboelectric fabric and friction nano-generator Download PDFInfo
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- CN119465467A CN119465467A CN202411606338.1A CN202411606338A CN119465467A CN 119465467 A CN119465467 A CN 119465467A CN 202411606338 A CN202411606338 A CN 202411606338A CN 119465467 A CN119465467 A CN 119465467A
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- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
本发明申请涉及纱线、绒类摩擦电织物的制备方法及摩擦纳米发电机，属于智能纺织材料技术领域，摩擦纳米发电机包括：正极摩擦单元，负极摩擦单元；正极摩擦单元和负极摩擦单元中至少一个包括所述绒类摩擦电织物。本发明申请能够为开发柔性化和多样化的摩擦纳米发电机提供了更多技术可能性，极大拓展了摩擦纳米发电机在服装、可穿戴设备等领域的应用前景。
The present invention relates to a method for preparing yarn and velvet triboelectric fabrics and a triboelectric nanogenerator, belonging to the technical field of intelligent textile materials. The triboelectric nanogenerator comprises: a positive friction unit and a negative friction unit; at least one of the positive friction unit and the negative friction unit comprises the velvet triboelectric fabric. The present invention provides more technical possibilities for the development of flexible and diversified triboelectric nanogenerators, greatly expanding the application prospects of triboelectric nanogenerators in clothing, wearable devices and other fields.
Description
Technical Field
The invention belongs to the technical field of intelligent textile materials, and particularly relates to a preparation method of yarn and velvet type friction electric fabrics and a friction nano-generator.
Background
In the existing friction nano power generation pole field, a friction nano power generator is a power generation device for collecting tiny mechanical energy and converting the tiny mechanical energy into electric energy by utilizing friction electrification and electrostatic induction principles. As shown in fig. 1, the friction nano-generator generally includes a friction layer 4, an electrode layer 5, and an external lead 6, the friction layer 4 may be a positive friction layer or a negative friction layer, the electrode layer 5 may be a positive electrode layer or a negative electrode layer, the positive friction layer and the positive electrode layer are connected to form a positive friction unit, the negative friction layer and the negative electrode layer are connected to form a negative friction unit, and the external lead 6 is connected to the positive electrode layer of the positive friction unit and the negative electrode layer of the negative friction unit. Friction nano-generators generally have four modes of operation, vertical contact separation, horizontal sliding friction, independent layer and single electrode.
At present, the combination of the friction nano generator and the textile technology is a new energy collection mode, and the intelligent textile material formed by combination can collect tiny mechanical energy generated by human body which is not in motion at any time to be converted into electric energy, so that energy can be provided for intelligent wearable equipment, the trouble of continuous voyage and frequent charging caused by the traditional battery power supply is eliminated, and a new technological breakthrough can be brought to the field of wearable equipment. The velvet fabric generally comprises a larger specific surface area, so that the actual friction contact area of the friction nano generator in the working process can be increased, the voltage, current, charge and other electrical outputs of the friction nano generator are increased, and the velvet fabric is gradually becoming a preferred material for a friction layer of the friction nano generator. The method for obtaining the velvet fabric is various, but the velvet fabric is mostly formed on a fabric layer by using a machine, or is formed by post-finishing of the fabric such as napping, milling, flocking, needle punching and napping, and the like, the process is complex, and the velvet fabric is independently used as a friction layer of the friction nano-generator and is separated from an electrode layer, so that the flexibility and the integration of the friction nano-generator are not good, and the velvet fabric is applied to clothing.
Disclosure of Invention
The invention provides a preparation method of yarn and velvet type electric friction fabrics and a friction nano-generator, aiming at partially or completely solving the technical problems that in the prior art, the electrode layer separation of a friction layer is unfavorable for the flexibility and integration of the friction nano-generator and the application of the friction nano-generator to clothes, the invention can prepare the velvet type electric friction fabrics, the velvet type electric friction fabrics can realize the combination of the friction layer and the electrode layer, the flexibility and integration of the friction nano-generator are improved, the structural redundancy of the friction nano-generator is reduced, and the friction nano-generator is convenient to combine with the textile, and the technical scheme of the invention is as follows:
in a first aspect, a method for preparing a yarn for a pile type triboelectric fabric includes the steps of:
step 100, obtaining core yarns and decoration yarns, wherein the core yarns are conductive yarns;
step 200, at least carrying out warp knitting on the core yarn on a crochet machine to form a warp knitting structure, and at least carrying out weft insertion on the warp knitting structure by using decorative yarn on the crochet machine to obtain a conductive knitting structure;
And step 300, dividing the decorative yarn of the conductive knitting structure to prepare the yarn for the velvet type triboelectric fabrics.
Optionally, in step S200, the core yarn is warp yarn, and the warp knitting is performed on a crochet machine to form a warp knitting structure, and the decorative yarn is weft yarn and is clamped by the loops of the warp knitting structure.
Optionally, in step S100, the conductive yarn includes a conductive medium layer and a yarn layer.
Optionally, in step S100, the decorative yarn is from one or more of a natural fiber yarn, a chemical fiber yarn.
In a second aspect, the yarn for the velvet type electric friction fabric, which is prepared by adopting the method for preparing the yarn for the velvet type electric friction fabric in any one of the first aspect, comprises the following steps of weaving the yarn for the velvet type electric friction fabric on a computerized flat knitting machine to obtain the velvet type electric friction fabric.
The third aspect of the friction nano-generator is that the velvet type friction electric fabric prepared by the velvet type friction electric fabric preparation method in the second aspect comprises a positive electrode friction unit and a negative electrode friction unit, and at least one of the positive electrode friction unit and the negative electrode friction unit comprises the velvet type friction electric fabric.
Optionally, the positive electrode friction unit is connected with the negative electrode friction unit, or part of the velvet type friction electric fabrics in the velvet type friction electric fabrics are connected with an external sensor or an external electronic device or grounded by yarns, or the positive electrode friction unit and the negative electrode friction unit are connected.
The beneficial effects obtained by the application of the invention are as follows:
(1) In the invention, the conductive yarn is used as the core yarn, so that the yarn for the final velvet type electric friction fabric has a conductive function, the electric friction fabric with required conductive performance parameters can be formed, the crochet machine is utilized to carry out warp knitting on the core yarn and weft insertion on the decorative yarn, the knitting advantages of the crochet machine are fully exerted, the two knitting modes are effectively integrated to obtain the conductive knitting structure, the weft yarn (namely the decorative yarn) of the conductive knitting structure is divided, the yarn for the velvet type electric friction fabric can be prepared, the existing post-finishing working procedures (such as napping, milling, flocking and needle punching) of the knitted fabric are not needed, the texture of the yarn for the velvet type electric friction fabric after the weft yarn is divided is more fluffy, the contact point and the friction opportunity of the yarn for the velvet type electric friction fabric are increased, and the effect of the electric friction fabric can be improved.
(2) In the application of the invention, the friction layer, the electrode layer and the wires can be combined in the friction nano-generator to greatly simplify the structure of the traditional friction nano-generator, reduce the material use and assembly process steps of the friction layer and the electrode layer, and the velvet friction electric fabric is used as an integrated material, so that the problem of poor interlayer bonding possibly occurring in the traditional multilayer structure is avoided, the influence of factors such as interlayer displacement, contact resistance change and the like on the electric energy conversion efficiency in the power generation process is reduced, the electric energy can be reliably and stably output to supply power for the wearable equipment, the performance stability of the friction nano-generator is improved, and the large-scale production and popularization and application are facilitated;
(3) In the application of the invention, the shape, the size, the texture and the like of the friction electric fabric are flexibly designed by utilizing the technical advantage of convenient weaving of the velvet friction electric fabric, and the electric output of the friction nano generator such as voltage, current, charge and the like can be adjusted to meet different application scenes and requirements, so that more technical possibilities are provided for developing the flexible and diversified friction nano generator, and the application prospect of the friction nano generator in the fields of clothing, wearable equipment and the like is greatly expanded.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the principle of operation of a prior art friction nano-generator;
FIG. 2 is a schematic flow chart of a method for preparing yarns for velvet type triboelectric fabrics according to the present invention;
FIG. 3 is a schematic diagram of the yarn preparation for the velvet type electric friction fabric according to the present invention;
FIG. 4 is a schematic illustration of a sample yarn for a pile type triboelectric fabric according to the present invention;
FIG. 5 is a schematic representation of a sample of a pile type triboelectric fabric according to the present invention;
FIG. 6 is a schematic diagram of a friction nano-generator according to the present invention;
FIG. 7 is a schematic diagram of the voltage, current, and charge output by the friction nano-generator of the present invention;
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and together with the embodiments of the invention serve to explain the invention and do not limit it.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments in the present application are included in the scope of protection of the present application.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientation or positional relationships based on those shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in further detail with reference to the accompanying drawings.
In a first aspect, as shown in fig. 2 to 4, a method for preparing a yarn for a velvet type triboelectric fabric includes the steps of:
Step 100, obtaining core yarns and decoration yarns, wherein the core yarns are conductive yarns;
Step 200, at least carrying out warp knitting on the core yarn on a crochet machine to form a warp knitting chain structure 1, and at least carrying out weft insertion on the warp knitting chain structure on the crochet machine by using a decorative yarn 2 so as to obtain a conductive knitting structure;
In some embodiments, forming a warp knitting structure by warp knitting core yarns comprises sequentially feeding the core yarns into crochets in a certain order after the core yarns are led out from a warp beam on a crochet machine, padding the core yarns in the hooks of the crochets when the crochets ascend, then descending the crochets, carrying the core yarns through old loops to form new loops, and circulating in such a way that each core yarn forms a warp knitting structure formed by sequentially stringing innumerable loops;
In some embodiments, weft insertion of the warp knit stitch using the decorative yarn includes weft insertion of a weft knitting process using the decorative yarn on a crochet machine, one or more decorative yarns being inserted into certain courses of the warp knit stitch that do not participate in looping and may be sandwiched in a curved or linear fashion between the front and back stitches of the warp knit stitch to form a weft knit structure.
And step 300, dividing the decorative yarn of the conductive knitting structure to prepare the yarn for the velvet type triboelectric fabrics.
In the invention, firstly, conductive yarns are used as core yarns, so that the final yarn for the velvet type electric friction fabric has a conductive function, the electric friction fabric with required conductive performance parameters can be formed, in addition, a crochet machine is used for carrying out warp knitting on the core yarns and weft insertion on the decoration yarns, the knitting advantages of the crochet machine are fully utilized, the two knitting modes are effectively integrated to obtain a conductive knitting structure, in addition, the weft yarn (namely the decoration yarns) of the conductive knitting structure is divided, the yarn for the velvet type electric friction fabric can be prepared, the conventional post-finishing working procedures (such as napping, milling, flocking and needle punching) of the knitted fabric are not needed, the texture of the yarn for the velvet type electric friction fabric after the weft yarn is divided is more fluffy, the contact point and the friction opportunity of the yarn for the velvet type electric friction fabric are increased, and the electric friction effect can be improved.
Optionally, in step S200, the core yarn is warp yarn, and the warp knitting is performed on a crochet machine to form a warp knitting pattern, and the ornamental yarn is weft yarn and is clamped by the warp knitting pattern.
In the invention, the crochet machine is used for operation, the decorative yarn is clamped as the weft yarn, the effective combination of the warp yarn knitting chain and the weft yarn clamped is formed, the complex procedure is reduced, the production process is relatively simple and efficient, simultaneously, the warp yarn and the weft yarn are skillfully combined, the integrity of the conductive knitting structure is improved, the possibility of loosening or shifting the weft yarn is reduced, and the dimensional stability of the whole conductive knitting structure is properly maintained.
In some embodiments, as shown in fig. 4, a yarn sample for a pile type triboelectric fabric is prepared, and the preparation method comprises the following steps:
s10, obtaining silver-plated nylon yarns as core yarns and terylene as decorative yarns;
s20, at least carrying out warp knitting on the core yarn on a crochet machine to form a warp knitting structure, and at least carrying out weft insertion on the warp knitting structure by using decorative yarn on the crochet machine to obtain a conductive knitting structure;
Step S30, dividing the yarn of the obtained conductive knitting structure, for example, using a cutter 3, thereby preparing a yarn for a velvet type triboelectric fabric.
Optionally, the conductive yarn comprises a conductive medium layer and a yarn layer.
In some embodiments, the conductive medium layer comprises silver-plated nylon, silver-plated polyester conductive substance, the yarn layer comprises yarn, and the silver-plated nylon, silver-plated polyester conductive substance is coated on the surface of the yarn.
In some embodiments, the conductive medium layer comprises metal particles, a metal wire conductive substance, and the yarn layer comprises yarns, the metal particles, the metal wire conductive substance being formed on a surface of the yarns.
In some embodiments, the conductive medium layer comprises a conductive polymer such as polyacetylene, polyaniline, polypyrrole, etc., the yarn layer comprises a yarn, and the conductive polymer such as polyacetylene, polyaniline, polypyrrole, etc., is polymerized on the surface of the yarn.
Optionally, the decorative yarn is from one or more of natural fiber yarn, chemical fiber yarn.
In some embodiments, the raw material of the natural fiber yarn comprises one or more of cotton, hemp, silk, wool. The natural fiber yarns such as cotton, hemp, silk and wool generally have good hygroscopicity, air permeability and comfort, and are soft, skin-friendly, elastic and extensibility, so that the manufactured fabric is comfortable to wear, and the natural fiber has good environmental protection and is easy to decompose and recycle.
In some embodiments, the raw materials of the chemical fiber yarn include one or more of terylene, chinlon, acrylon and chlorlon, and the chemical fiber yarn of terylene, chinlon, acrylon, chlorlon and the like generally has the advantages of high strength, thermal plasticity, good shrink resistance and economical price, for example, chinlon has high strength, good wear resistance, good terylene wrinkle resistance, easy shape retention after washing, the acrylon has thermal insulation and light resistance, the chlorlon has flame resistance and acid and alkali resistance, and the like, and the raw material source of the chemical fiber yarn is wide, the cost is low, and the chemical fiber yarn is very beneficial to mass production.
It is worth mentioning that the natural fiber yarn and the chemical fiber yarn have the characteristics, and have unique advantages and good use effects in different application fields. In actual production, the materials are often blended so as to fully exert respective advantages and meet the demands of people on different performances and functions.
In a second aspect, a method for preparing a velvet type electric friction fabric, which is prepared by adopting the method for preparing the velvet type electric friction fabric yarn in any one of the first aspect, comprises the following steps of weaving the velvet type electric friction fabric yarn on a computerized flat knitting machine to obtain the velvet type electric friction fabric.
As shown in fig. 5, the yarn for the velvet type electric-friction fabric prepared in fig. 4 is used, and the velvet type electric-friction fabric sample is obtained by weaving on a computerized flat knitting machine by using the preparation method of the velvet type electric-friction fabric, wherein the texture of the velvet type electric-friction fabric sample is 1+1 rib. The 1+1 rib is a weft knitted fabric formed by alternately arranging a front wale and a back wale in a certain combination. In a complete structure, the front side stitch lines and the back side stitch lines are alternately arranged, the ratio of the front side stitch lines to the back side stitch lines is 1:1, namely, each stitch of the front side stitch lines is woven, and then each stitch of the back side stitch lines is woven, so that the velvet friction electric fabric has clear, regular and concise stripes, has a relatively smooth surface, has no obvious concave-convex feeling, has excellent elasticity and elasticity, can be closely attached to a human body curve, does not have tight or bound feeling when being worn, and gives people comfortable wearing experience.
As shown in fig. 6, in a third aspect, a friction nano-generator, with or without the velvet type friction electric fabric manufactured by the manufacturing method of the velvet type friction electric fabric in the second aspect, includes a positive electrode friction unit and a negative electrode friction unit, and at least one of the positive electrode friction unit and the negative electrode friction unit includes the velvet type friction electric fabric.
In the application, the velvet type electric fabric 7 woven by yarns can replace the friction layer 4 and the electrode layer 5 of the traditional friction nano-generator, at least one of the positive electrode friction unit and the negative electrode friction unit comprises the velvet type electric fabric, and potential difference can be formed between the positive electrode friction unit and the negative electrode friction unit, which means that 1) the positive electrode friction unit comprises the velvet type electric fabric or the velvet type electric fabric can be directly used as the positive electrode friction unit, the velvet type electric fabric can simultaneously have the friction layer and the electrode layer, the negative electrode friction unit can still be the friction layer 4 and the electrode layer 5, so that the friction generating effect of the friction nano-generator can be realized, 2) the negative electrode friction unit comprises the velvet type electric fabric or the velvet type electric fabric can be directly used as the negative electrode friction unit, the velvet type electric fabric can simultaneously have the friction layer and the electrode layer, the friction effect of the friction nano-generator can be realized, and 3) the positive electrode friction unit comprises the velvet type electric fabric or the velvet type electric fabric can be directly used as the friction layer of the electric generator, so that the friction generating effect of the velvet type electric fabric can be further improved, and the velvet type electric generator can be directly used as the negative electrode friction layer.
The friction nano generator can greatly simplify the structure of the traditional friction nano generator, reduce the material use and assembly process steps of a friction layer and an electrode layer, and the velvet friction electric fabric is used as an integrated material, so that the problem of poor interlayer lamination possibly occurring in the traditional multilayer structure is avoided, the influence of factors such as interlayer displacement, contact resistance change and the like on the electric energy conversion efficiency in the power generation process is reduced, the electric energy can be reliably and stably output to supply power for wearable equipment, the performance stability of the friction nano generator is improved, the large-scale production and popularization and application are facilitated, meanwhile, the shape, the size, the texture and the like of the velvet friction electric fabric are flexibly designed by utilizing the technical advantages of the velvet friction electric fabric in order to meet different application scenes and requirements, more technical possibilities are provided for developing the diversified friction nano generator, and the application prospect of the friction nano generator in the fields such as clothing, wearable equipment and the like is greatly expanded.
Optionally, the positive electrode friction unit is connected with the negative electrode friction unit, or part of the velvet type friction electric fabrics in the velvet type friction electric fabrics are connected with an external sensor or an external electronic device or grounded by yarns, or the positive electrode friction unit and the negative electrode friction unit are connected.
In the present application, first, when at least one of the positive electrode friction unit and the negative electrode friction unit includes the velvet-type electric friction fabric, a part of the velvet-type electric friction fabric yarn may be drawn out from the velvet-type electric friction fabric, and a part of the velvet-type electric friction fabric yarn may be used as the wire 8. In addition, when at least one of the positive electrode friction unit and the negative electrode friction unit comprises the velvet friction electric fabric, part of the velvet friction electric fabric yarns can be independently connected with an external sensor (such as a capacitance sensor) or an external electronic device (such as a mobile phone, ipod and the like) or grounded, and part of velvet friction electric fabric yarns can also be connected with the positive electrode friction unit and the negative electrode friction unit, so that a complete friction electric effect system can be formed inside the fabric, the possibility is provided for related equipment such as a mobile phone, the dependence on external power supply is reduced, the possible failure risk caused by poor connection points of the traditional wires is also reduced, the running stability and reliability of the friction electric generator are improved, the service life of the velvet friction electric fabric can be prolonged, the service life of the electric power generator can be conveniently adjusted according to the actual layout of the electric power, and the requirements of the electric power generator can be conveniently adjusted.
The single-electrode vertical contact separation type friction nano generator is constructed by adopting the velvet type friction electric fabric prepared in the figure 5 and a PTFE (Po LYTETRAF L uoroethy l ene, abbreviated as PTFE and Chinese polytetrafluoroethylene) film.
As shown in fig. 7, the friction nano generator was designed to output a voltage (fig. 7 (a)), a current (fig. 7 (b)), and a charge (fig. 7 (C)) at a temperature of 22 ℃, a humidity of 38%, a contact-separation distance of 20mm, a contact force of 5N, and a contact frequency of 2HZ, with the voltage reaching 12.3V, the current reaching 65.5nA, and the charge reaching 5.1nC.
It can be seen from fig. 7 that the friction nano generator provided by the invention has good power generation performance, stable and reliable electric performance working capacity under corresponding environment and working parameters, and can stably supply power for sensing and small-sized electronic equipment, so that the friction nano generator has great technical potential and market scenes in the fields of clothing, wearable equipment and the like.
The present application and its embodiments have been described above with no limitation, and the actual structure is not limited to this, but is merely one of the embodiments of the present application shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present application.
Claims (7)
1. The preparation method of the yarn for the velvet type triboelectric fabrics is characterized by comprising the following steps of:
step 100, obtaining core yarns and decoration yarns, wherein the core yarns are conductive yarns;
step 200, at least carrying out warp knitting on the core yarn on a crochet machine to form a warp knitting structure, and at least carrying out weft insertion on the warp knitting structure by using decorative yarn on the crochet machine to obtain a conductive knitting structure;
And step 300, dividing the decorative yarn of the conductive knitting structure to prepare the yarn for the velvet type triboelectric fabrics.
2. The method according to claim 1, wherein in step S200, the core yarn is warp yarn, the warp knitting is performed on a crochet machine to form a warp knitting structure, and the decorative yarn is weft yarn and is sandwiched by loops of the warp knitting structure.
3. The method of producing a yarn for a pile type triboelectric fabric according to claim 2, wherein in step S100, the conductive yarn comprises a conductive medium layer and a yarn layer.
4. The method according to claim 2, wherein in step S100, the decorative yarn is one or more selected from natural fiber yarn and chemical fiber yarn.
5. A method for preparing a velvet type electric friction fabric, which is a velvet type electric friction fabric yarn prepared by adopting the method for preparing the velvet type electric friction fabric yarn according to any one of claims 1-4, and is characterized by comprising the following steps of weaving the velvet type electric friction fabric yarn on a computerized flat knitting machine to obtain the velvet type electric friction fabric.
6. The velvet type friction electric fabric prepared by the velvet type friction electric fabric preparation method according to claim 5 is characterized by comprising a positive electrode friction unit and a negative electrode friction unit, wherein at least one of the positive electrode friction unit and the negative electrode friction unit comprises the velvet type friction electric fabric.
7. The friction nano generator according to claim 6, wherein the positive electrode friction unit is connected with the negative electrode friction unit, or a part of the velvet type friction electric fabric in the velvet type friction electric fabric is connected with an external sensor or an external electronic device or grounded by yarn or the positive electrode friction unit and the negative electrode friction unit are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411606338.1A CN119465467A (en) | 2024-11-12 | 2024-11-12 | Preparation method of yarn and velvet type triboelectric fabric and friction nano-generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411606338.1A CN119465467A (en) | 2024-11-12 | 2024-11-12 | Preparation method of yarn and velvet type triboelectric fabric and friction nano-generator |
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| Publication Number | Publication Date |
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| CN119465467A true CN119465467A (en) | 2025-02-18 |
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|---|---|---|---|
| CN202411606338.1A Pending CN119465467A (en) | 2024-11-12 | 2024-11-12 | Preparation method of yarn and velvet type triboelectric fabric and friction nano-generator |
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| Country | Link |
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| CN (1) | CN119465467A (en) |
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- 2024-11-12 CN CN202411606338.1A patent/CN119465467A/en active Pending
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