CN114828312A - Multimode flexible textile-based active heating intelligent fabric and preparation method thereof - Google Patents

Multimode flexible textile-based active heating intelligent fabric and preparation method thereof Download PDF

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Publication number
CN114828312A
CN114828312A CN202210402226.9A CN202210402226A CN114828312A CN 114828312 A CN114828312 A CN 114828312A CN 202210402226 A CN202210402226 A CN 202210402226A CN 114828312 A CN114828312 A CN 114828312A
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China
Prior art keywords
active heating
fabric
layer
silver
textile
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Chinese (zh)
Inventor
田明伟
王航
刘红
胡星友
曲丽君
史宝会
吕凡熙
崔致豪
徐瑞东
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Qingdao University
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Qingdao University
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Priority to CN202210402226.9A priority Critical patent/CN114828312A/en
Publication of CN114828312A publication Critical patent/CN114828312A/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H05B3/342—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heaters used in textiles
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/441—Yarns or threads with antistatic, conductive or radiation-shielding properties
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
    • D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/12—Processes in which the treating agent is incorporated in microcapsules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details

Abstract

The invention relates to a multimode flexible textile-based active heating intelligent fabric and a preparation method thereof, wherein the intelligent fabric comprises: the active heating fabric layer and the phase change heat storage layer; the active heating fabric layer comprises base cloth, silver-plated conductive yarns, a direct-current power supply and electrodes, wherein the silver-plated conductive yarns are arranged on the base cloth, and the direct-current power supply drives the silver-plated conductive yarns to perform Joule heating through the electrodes; the phase change heat storage layer is used for absorbing and storing heat of the active heating fabric layer when the external environment temperature is higher than a temperature threshold value, and is used for releasing the stored heat to the active heating fabric layer when the external environment temperature is lower than the temperature threshold value. According to the invention, the silver-plated conductive yarns are used for joule heating, so that the heating rate is high; the large-area heating can be realized by adjusting the area of the silver-plated conductive yarn; in addition, through the supercooling property of the phase-change material in the phase-change heat storage layer, the heat dissipation and consumption are slowed down, the active heating time is prolonged, and the energy consumption is reduced.

Description

Multimode flexible textile-based active heating intelligent fabric and preparation method thereof
Technical Field
The invention relates to the technical field of textiles, in particular to a multi-mode flexible textile-based active heating intelligent fabric and a preparation method thereof.
Background
Since the invention of the electric blanket in 1948, people continuously try to develop the active heating fabric to the aspects of low power and portability, and the active heating fabric is mainly applied to the fields of medical sanitation, cold protection, automobile interior manufacturing and the like, such as a heating sleeping bag, a cold protective clothing, a knee pad, an automobile seat and the like, so that the capability of resisting the natural environment of people is greatly improved.
At present, portable heatable products on the market mainly have following two kinds, one kind is through fixing the lower resistance wire of power that generates heat in the middle of two-layer surface fabric, places it again afterwards and passes through external power supply and realize the purpose of heating in the position that needs generate heat, and this kind of surface fabric although satisfies portable requirement that generates heat, often is thicker and compliance and travelling comfort are relatively poor. The second is to coat a conductive material to form a film, such as a graphene conductive film or a metal conductive film, which has poor air permeability, poor comfort when used as a fabric for clothing, limited heating area due to the material, difficulty in large-area heating, usually less than 10cm x 10cm, short active heating time of the existing heating fabric, and heat dissipation block.
Therefore, the active heating fabric which can be heated in a large area, prolongs the active heating time, is high in heating efficiency and is comfortable and breathable to wear is significant.
Disclosure of Invention
The invention aims to provide a multimode flexible textile-based active heating intelligent fabric and a preparation method thereof, which can prolong the active heating time, realize large-area heating, have high heating efficiency and are comfortable and breathable to wear.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a multimode flexible textile-based active heating intelligent fabric, which comprises: the active heating fabric layer and the phase change heat storage layer;
the active heating fabric layer comprises base cloth, silver-plated conductive yarns, a direct-current power supply and electrodes, wherein the silver-plated conductive yarns are arranged on the base cloth, and the direct-current power supply drives the silver-plated conductive yarns to perform Joule heating through the electrodes;
the phase change heat storage layer is used for absorbing and storing heat of the active heating fabric layer when the external environment temperature is higher than a temperature threshold value, and is used for releasing the stored heat to the active heating fabric layer when the external environment temperature is lower than the temperature threshold value.
Optionally, the method further comprises:
and the far infrared radiation layer is arranged on the upper layer of the phase change heat storage layer.
Optionally, the method further comprises: a textile-based temperature sensor and a data processing system;
the textile-based temperature sensor is embedded in the active heating fabric layer and used for acquiring a temperature signal of the active heating fabric layer and sending the temperature signal to the data processing system;
and the data processing system is embedded in the direct-current power supply, is connected with the textile-based temperature sensor and is used for monitoring the temperature of the active heating fabric layer in real time according to the temperature signal.
Optionally, the phase change heat storage layer is prepared from a coating auxiliary agent containing phase change microcapsules; the energy storage density of the phase change microcapsule is 100-160J/g, the phase change temperature is 25-39 ℃, and the particle size is 1-100 mu m.
Optionally, the silver-plated conductive yarns form a heat-conducting and heat-emitting pattern on the base fabric through a textile forming process.
Optionally, the silver-plated conductive yarn is a conductive filament with a silver nano-layer plated on the surface, and the matrix of the conductive filament is nylon, glass fiber or terylene.
Optionally, the material of the electrode is conductive filament or conductive paint.
Optionally, the far infrared radiation layer is prepared from a coating auxiliary agent containing a far infrared radiation material.
Optionally, the far infrared radiation material is graphene, metal alkene or carbon nanotube.
In order to achieve the above object, the present invention further provides a preparation method of the multimodal flexible textile-based active heating intelligent fabric, based on the multimodal flexible textile-based active heating intelligent fabric, the preparation method includes:
s1: the silver-plated conductive yarn is integrally processed in the base fabric through knitting, weaving, embroidering and sewing processes in sequence to form a heat-conducting and heating pattern; the electrode is compositely processed into the base fabric through the processes of knitting, weaving, embroidering and sewing, and the heat-conducting heating pattern is connected with a direct-current power supply through the electrode to form an active heating fabric layer;
s2: the method comprises the following steps of (1) embedding conductive filaments into an active heating fabric layer through combined processing of knitting, embroidering and sewing processes by using the conductive filaments as textile-based temperature sensors, and connecting the textile-based temperature sensors with a data processing system;
s3: adding the phase-change microcapsules into the coating auxiliary agent according to a set proportion, sequentially performing ultrasonic dispersion, shear dispersion and high-pressure homogeneous dispersion processes to prepare the coating auxiliary agent containing the phase-change microcapsules, and coating the coating auxiliary agent on the surface of the active heating fabric layer by screen printing, electrostatic spraying and magnetron sputtering processes to form a phase-change heat storage layer;
s4: one or more of graphene, metal alkene and carbon nanotube coating materials are added into the coating auxiliary agent according to a set proportion, the coating auxiliary agent containing the far infrared radiation material is prepared through the procedures of ultrasonic dispersion, shear dispersion and high-pressure homogeneous dispersion in sequence, and the coating auxiliary agent is coated on the surface of the phase change heat storage layer through the technologies of screen printing, electrostatic spraying and magnetron sputtering to form a far infrared radiation layer, and finally the multimode flexible textile-based active heating intelligent fabric is obtained.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a multimode flexible textile-based active heating intelligent fabric and a preparation method thereof, wherein the intelligent fabric comprises: the active heating fabric layer and the phase change heat storage layer; the active heating fabric layer comprises base cloth, silver-plated conductive yarns, a direct-current power supply and electrodes, wherein the silver-plated conductive yarns are arranged on the base cloth, and the direct-current power supply drives the silver-plated conductive yarns to perform Joule heating through the electrodes; the phase change heat storage layer is used for absorbing and storing heat of the active heating fabric layer when the external environment temperature is higher than a temperature threshold value, and is used for releasing the stored heat to the active heating fabric layer when the external environment temperature is lower than the temperature threshold value. According to the invention, the silver-plated conductive yarns are used for joule heating, so that the heating rate is high; the large-area heating can be realized by adjusting the area of the silver-plated conductive yarn; in addition, through the supercooling property of the phase-change material in the phase-change heat storage layer, the heat dissipation and consumption are slowed down, the active heating time is prolonged, and the energy consumption is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in 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 it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a front view of a schematic structural diagram of a multimode flexible textile-based active heating intelligent fabric;
FIG. 2 is a top view of a schematic structural diagram of the multimode flexible textile-based active heating intelligent fabric;
FIG. 3 is a schematic view of a first heat-conductive pattern;
FIG. 4 is a schematic view of a second heat-conducting and heat-generating pattern;
FIG. 5 is a schematic view of a third thermal conductive pattern;
FIG. 6 is a schematic view of a fourth thermal conductive heating pattern;
fig. 7 is a flow chart of a preparation method of the multimode flexible textile-based active heating intelligent fabric.
Description of the symbols:
the textile fabric comprises an active heating fabric layer-1, a textile-based temperature sensor-2, a phase change heat storage layer-3, a far infrared radiation layer-4, an electrode-5 and a direct current power supply-6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a multimode flexible textile-based active heating intelligent fabric and a preparation method thereof, which can prolong the active heating time, realize large-area heating, have high heating efficiency and are comfortable and breathable to wear.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 and fig. 2, the invention relates to a multimode flexible textile-based active heating intelligent fabric, which comprises: an active heating fabric layer 1 and a phase change heat storage layer 3.
The active heating fabric layer 1 comprises base cloth, silver-plated conductive yarns, a direct current power supply 6 and electrodes 5, wherein the silver-plated conductive yarns are arranged on the base cloth, and the direct current power supply 6 drives the silver-plated conductive yarns to conduct Joule heating through the electrodes 5.
The silver-plated conductive yarns form heat-conducting and heating patterns on the base cloth through a textile forming process, the area and the patterns of active heating can be replaced according to requirements and application scenes, large-area heating and special-shape heating are achieved, different scene requirements are achieved, and some different heat-conducting and heating patterns are listed as shown in figures 3-6. The joule heating of the silver-plated conductive yarns can realize low driving voltage (5-24V), fast heating rate of 0.2-2 ℃/s and high heating power of 5-20W. The silver-plated conductive yarns are conductive filaments with surfaces plated with silver nano layers, the matrix of the conductive filaments is nylon, glass fiber or terylene, the specific resistance of the silver-plated conductive filaments per unit length is 0.1-10 omega/cm, the fineness is 20-300 denier, the breaking strength is 1.5-3 cN/dtex, and the breaking elongation is 5-19%. The direct-current power supply 6 and the data processing system embedded in the direct-current power supply conduct joule heating on heat conduction heating patterns formed by silver-plated conductive yarns in the active heating fabric layer 1 through the electrodes 5, and the electrodes 5 are conductive filaments such as copper wires, silver-plated conductive yarns, carbon nanotube yarns and graphene yarns or conductive coatings such as conductive silver paint and conductive graphene paint. Wherein, the conductive filament (electrode) is compositely processed into the active heating fabric layer 1 through the technologies of knitting, embroidering, sewing and the like, and the conductive coating is coated on the surface of the active heating fabric layer 1 through the technologies of silk screen printing, electrostatic spraying, magnetron sputtering and the like. The base cloth of the active heating fabric layer 1 is knitted fabric, woven fabric or non-woven fabric, and the base cloth is made of cotton, wool, silk, hemp, terylene, chinlon, polypropylene fiber, spandex, vinylon, polyvinyl chloride fiber, aramid fiber or glass fiber.
The phase change heat storage layer 3 is used for absorbing and storing the heat of the active heating fabric layer 1 when the external environment temperature is higher than the temperature threshold value, and is used for releasing the stored heat to the active heating fabric layer 1 when the external environment temperature is lower than the temperature threshold value.
Further, the phase change heat storage layer 3 is prepared from a coating auxiliary agent containing phase change microcapsules, wherein the energy storage density of the phase change microcapsules is 100-160J/g, the phase change temperature is 25-39 ℃, and the particle size is 1-100 mu m. The coating auxiliary agent comprises one or more of polyurethane, acrylic acid, silica gel and polydimethylsiloxane. The solid content of the phase change microcapsule is 5-50%. The principle is that the solid-liquid reversible conversion of the contained phase-change material is carried out along with the change of the external environment temperature, namely when the environment temperature is increased, the phase-change material is changed into liquid from solid, and the heat of an absorption fabric layer is stored in the phase-change microcapsule; when the temperature is reduced, the phase-change microcapsules are changed from a liquid state to a solid state, the stored heat is released, the body surface temperature is kept, and a human body is in a more comfortable state. The phase-change heat storage layer 3 can slow down heat dissipation by utilizing the supercooling property of the phase-change material, prolong the active heating time and reduce energy consumption.
Further, the method also comprises the following steps: and the far infrared radiation layer 4 is arranged on the upper layer of the phase change heat storage layer 3. The far infrared radiation layer 4 is prepared from a functional coating auxiliary agent containing graphene, metal alkene or a carbon nano tube coating material, can realize high far infrared emissivity of 80-92% under a low-temperature working condition, and has a health-care effect on a human body. Wherein the particle size of the graphene, the metal alkene and the carbon nano tube is 1-100 mu m, and the solid content is 5-50%. The coating auxiliary agent comprises one or more of polyurethane, acrylic acid, silica gel and polydimethylsiloxane.
Further, still include: a textile-based temperature sensor 2 and a data processing system. The textile-based temperature sensor 2 is embedded in the active heating fabric layer 1 and is used for acquiring a temperature signal of the active heating fabric layer 1 and sending the temperature signal to the data processing system;
the data processing system is embedded in the direct-current power supply 6, connected with the textile-based temperature sensor 2 and used for monitoring the temperature of the active heating fabric layer 1 in real time according to the temperature signal. Specifically, the textile-based temperature sensor 2 transmits the resistance change signal data to a data processing system embedded in the direct-current power supply 6.
Furthermore, the temperature coefficient of resistance TCR (1-5 x 10) of the textile-based temperature sensor 2 -3 K-1) is made of conductive filaments such as silver-plated conductive yarns, carbon nanotube yarns and graphene yarns or conductive coatings such as conductive silver paint and conductive graphene paint. Wherein is electrically conductiveThe filaments are compositely processed into the active heating fabric layer 1 through the technologies of knitting, embroidering, sewing and the like, and the conductive coating is coated on the surface of the active heating fabric layer 1 through the technologies of silk screen printing, electrostatic spraying, magnetron sputtering and the like.
In order to achieve the purpose, the invention also provides a preparation method of the multi-modal flexible textile-based active heating intelligent fabric, and the preparation method mainly comprises four steps of preparing an active heating fabric layer; secondly, preparing a textile-based temperature sensor 2; thirdly, assembling the phase change heat storage layer 3; and fourthly, assembling the far infrared radiation layer 4.
Firstly, preparing an active heating fabric layer. Comprises active heating pattern processing, electrode 5 preparation and circuit connection.
The active heating pattern is processed, the active heating yarn is silver-plated conductive yarn, and the active heating yarn is integrally processed on the active heating fabric layer 1 through processes such as knitting, weaving, embroidering, sewing and the like, and the fabric electrode 5 adopts two preparation schemes: in the first scheme, if the electrode is a conductive filament, the conductive filament is compositely processed into the active heating fabric layer 1 through the processes of knitting, weaving, embroidering, sewing and the like. Scheme II: if the electrode is conductive paint, the conductive paint is coated on the surface of the active heating fabric layer 1 through technologies such as screen printing, electrostatic spraying, magnetron sputtering and the like. Adopting a screen printing process, designing a planar screen printing pattern plate according to the size structure of the electrode, placing the conductive coating on the planar screen, and printing by using a scraper, wherein the gap spacing of the scraper is 5-100 mu m; or electrostatic spraying is adopted, the spraying thickness is designed according to the size structure of the electrode, the electrostatic field is 10-100 kV, and the air flow speed is 10-100 m/s; or a magnetron sputtering process is adopted, a magnetron sputtering template is designed according to the size structure of the electrode, the magnetron sputtering strength is 5-10000W, the magnetron sputtering time is 1-30 minutes, and the vacuum degree is 10 -2 ～10 -5 Pa. And (4) circuit connection, wherein the silver-plated conductive yarns are connected with the electrodes and connected with a direct current power supply 6.
In the second step, a textile-based temperature sensor 2 is prepared. Two preparation schemes, namely, if the electrode is a conductive filament, the conductive filament is compositely processed to the active heating fabric layer 1 through the technologies of knitting, embroidering, sewing and the likePerforming the following steps; and in the second scheme, if the electrode is the conductive coating, the conductive coating is coated on the surface of the active heating fabric layer 1 through technologies such as screen printing, electrostatic spraying, magnetron sputtering and the like. Adopting a screen printing process, designing a planar screen printing pattern plate according to the size structure of the textile-based temperature sensor, placing conductive coating on the planar screen, and printing by using a scraper, wherein the gap spacing of the scraper is 5-100 mu m; or electrostatic spraying is adopted, the spraying thickness is designed according to the size structure of the textile-based temperature sensor, the electrostatic field is 10-100 kV, and the air flow speed is 10-100 m/s; or a magnetron sputtering process is adopted, a magnetron sputtering template is designed according to the size structure of the textile base temperature sensor, the magnetron sputtering strength is 5-10000W, the magnetron sputtering time is 1-30 minutes, and the vacuum degree is 10 -2 ～10 -5 Pa. The textile-based temperature sensor 2 sends resistance change signal data to a data processing system embedded in the direct-current power supply 6, and the temperature of the active heating fabric can be monitored in real time.
And thirdly, assembling the phase change heat storage layer 3. The functional coating auxiliary agent containing the phase-change microcapsules is prepared by adding the phase-change microcapsules into the coating auxiliary agent according to a proportion, and sequentially carrying out ultrasonic dispersion (ultrasonic power of 100-1000W, time of 10-30 minutes and temperature of 25-35 ℃), shear dispersion (shear rotation speed of 1000-100000 rpm, time of 5-320 minutes and temperature of 25-35 ℃), high-pressure homogeneous dispersion (high pressure of 10-50 MPa, time of 5-320 minutes and temperature of 25-35 ℃) and the like to prepare the functional coating auxiliary agent containing the phase-change microcapsules. The surface of the active heating fabric layer 1 is coated by the technologies of screen printing, electrostatic spraying, magnetron sputtering and the like. Adopting a screen printing process, designing a planar screen printing pattern plate according to the size structure of the phase change heat storage layer, placing the conductive coating on the planar screen, and printing by using a scraper, wherein the gap spacing of the scraper is 5-100 mu m; or electrostatic spraying is adopted, the spraying thickness is designed according to the size structure of the phase change heat storage layer, the electrostatic field is 10-100 kV, and the air flow speed is 10-100 m/s; or a magnetron sputtering process is adopted, a magnetron sputtering template is designed according to the size structure of the phase change heat storage layer, the magnetron sputtering strength is 5-10000W, the magnetron sputtering time is 1-30 minutes, and the vacuum degree is 10 -2 ～10 -5 Pa。
And fourthly, assembling the far infrared radiation layer 4. Preparing a graphene-containing material,The functional coating auxiliary agent of the metal alkene or the carbon nanotube coating material is prepared by adding one or more of graphene, metal alkene and the carbon nanotube coating material into the coating auxiliary agent according to a proportion, and sequentially performing ultrasonic dispersion (ultrasonic power of 100-1000W, time of 10-30 minutes, temperature of 25-35 ℃), shear dispersion (shear rotation speed of 1000-100000 rpm, time of 5-320 minutes, temperature of 25-35 ℃), high-pressure homogeneous dispersion (high pressure of 10-50 Mpa, time of 5-320 minutes, temperature of 25-35 ℃) and the like to prepare the functional coating auxiliary agent containing far infrared radiation. The surface of the active heating fabric layer 1 is coated by the technologies of screen printing, electrostatic spraying, magnetron sputtering and the like. Adopting a screen printing process, designing a planar screen printing pattern plate according to the size structure of the far infrared radiation layer, placing the conductive coating on the planar screen, and printing by using a scraper, wherein the gap spacing of the scraper is 5-100 mu m; or electrostatic spraying is adopted, the spraying thickness is designed according to the size structure of the far infrared radiation layer, the electrostatic field is 10-100 kV, and the air flow speed is 10-100 m/s; or a magnetron sputtering process is adopted, a magnetron sputtering template is designed according to the size structure of the far infrared radiation layer, the magnetron sputtering strength is 5-10000W, the magnetron sputtering time is 1-30 minutes, and the vacuum degree is 10 -2 ～10 -5 Pa。
The multimode flexible textile-based active heating intelligent fabric comprises three modes, wherein one mode is an active heating fabric layer and joule heating of silver-plated conductive yarns, so that low driving voltage (5-24V), high heating rate (0.2-2 ℃/s) and high heating power (5-20W) can be realized; secondly, the phase change heat storage layer and the supercooling property of the phase change material can slow down heat dissipation, prolong the active heating time and reduce energy consumption; and thirdly, the far infrared radiation layer, graphene, metal alkene or carbon nanotube coating material realize high far infrared emissivity of 80-92% under low temperature working condition, and the health care function is achieved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (10)

1. The utility model provides a flexible textile base initiative intelligent surface fabric that generates heat of multimode which characterized in that includes: the active heating fabric layer and the phase change heat storage layer;
the active heating fabric layer comprises base cloth, silver-plated conductive yarns, a direct-current power supply and electrodes, wherein the silver-plated conductive yarns are arranged on the base cloth, and the direct-current power supply drives the silver-plated conductive yarns to perform Joule heating through the electrodes;
the phase change heat storage layer is used for absorbing and storing heat of the active heating fabric layer when the external environment temperature is higher than a temperature threshold value, and is used for releasing the stored heat to the active heating fabric layer when the external environment temperature is lower than the temperature threshold value.
2. The multi-modal flexible textile-based active heating intelligent fabric according to claim 1, further comprising:
and the far infrared radiation layer is arranged on the upper layer of the phase change heat storage layer.
3. The multi-modal flexible textile-based active heating intelligent fabric according to claim 1, further comprising: a textile-based temperature sensor and a data processing system;
the textile-based temperature sensor is embedded in the active heating fabric layer and used for acquiring a temperature signal of the active heating fabric layer and sending the temperature signal to the data processing system;
and the data processing system is embedded in the direct-current power supply, is connected with the textile-based temperature sensor and is used for monitoring the temperature of the active heating fabric layer in real time according to the temperature signal.
4. The multimode flexible textile-based active heating intelligent fabric according to claim 1, wherein the phase change heat storage layer is prepared from a coating auxiliary agent containing phase change microcapsules; the energy storage density of the phase change microcapsule is 100-160J/g, the phase change temperature is 25-39 ℃, and the particle size is 1-100 mu m.
5. The multimode flexible textile-based active heating intelligent fabric as claimed in claim 1, wherein the silver-plated conductive yarns form a heat-conducting heating pattern on the base fabric through a textile forming process.
6. The multimode flexible textile-based active heating intelligent fabric according to claim 1, wherein the silver-plated conductive yarn is a conductive filament with a silver nano-layer plated on the surface, and the matrix of the conductive filament is nylon, glass fiber or terylene.
7. The multimode flexible textile-based active heating intelligent fabric according to claim 1, wherein the electrode is made of conductive filaments or conductive paint.
8. The multimode flexible textile-based active heating intelligent fabric as claimed in claim 2, wherein the far infrared radiation layer is prepared from a coating auxiliary agent containing a far infrared radiation material.
9. The multimode flexible textile-based active heating intelligent fabric according to claim 8, wherein the far infrared radiation material is graphene, metal alkene or carbon nanotube.
10. A preparation method of a multi-modal flexible textile-based active heating intelligent fabric is characterized in that the preparation method is based on the multi-modal flexible textile-based active heating intelligent fabric of claims 1-9, and comprises the following steps:
s1: the silver-plated conductive yarn is integrally processed in the base fabric through knitting, weaving, embroidering and sewing processes in sequence to form a heat-conducting and heating pattern; the electrode is compositely processed into the base fabric through the processes of knitting, weaving, embroidering and sewing, and the heat-conducting heating pattern is connected with a direct-current power supply through the electrode to form an active heating fabric layer;
s2: the method comprises the following steps of (1) embedding conductive filaments into an active heating fabric layer through combined processing of knitting, embroidering and sewing processes by using the conductive filaments as textile-based temperature sensors, and connecting the textile-based temperature sensors with a data processing system;
s3: adding the phase-change microcapsules into the coating auxiliary agent according to a set proportion, sequentially performing ultrasonic dispersion, shear dispersion and high-pressure homogeneous dispersion processes to prepare the coating auxiliary agent containing the phase-change microcapsules, and coating the coating auxiliary agent on the surface of the active heating fabric layer by screen printing, electrostatic spraying and magnetron sputtering processes to form a phase-change heat storage layer;
s4: one or more of graphene, metal alkene and carbon nanotube coating materials are added into the coating auxiliary agent according to a set proportion, the coating auxiliary agent containing the far infrared radiation material is prepared through the procedures of ultrasonic dispersion, shear dispersion and high-pressure homogeneous dispersion in sequence, and the coating auxiliary agent is coated on the surface of the phase change heat storage layer through the technologies of screen printing, electrostatic spraying and magnetron sputtering to form a far infrared radiation layer, and finally the multimode flexible textile-based active heating intelligent fabric is obtained.
CN202210402226.9A 2022-04-18 2022-04-18 Multimode flexible textile-based active heating intelligent fabric and preparation method thereof Pending CN114828312A (en)

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