CN116791266A - Electric heating textile and preparation method thereof - Google Patents
Electric heating textile and preparation method thereof Download PDFInfo
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- CN116791266A CN116791266A CN202310760107.5A CN202310760107A CN116791266A CN 116791266 A CN116791266 A CN 116791266A CN 202310760107 A CN202310760107 A CN 202310760107A CN 116791266 A CN116791266 A CN 116791266A
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- 239000004753 textile Substances 0.000 title claims abstract description 43
- 238000005485 electric heating Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 113
- 239000004744 fabric Substances 0.000 claims abstract description 69
- 238000013461 design Methods 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 14
- 238000009941 weaving Methods 0.000 claims description 14
- 238000009958 sewing Methods 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910021389 graphene Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 229920002334 Spandex Polymers 0.000 claims description 4
- 229920006231 aramid fiber Polymers 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000004759 spandex Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004760 aramid Substances 0.000 claims 1
- 239000004020 conductor Substances 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000004364 calculation method Methods 0.000 description 10
- 230000035699 permeability Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000000576 coating method Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009956 embroidering Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009965 tatting Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Abstract
The invention discloses an electric heating textile and a preparation method thereof, the electric heating textile comprises conductive yarns and non-conductive yarns, the conductive yarns are weft yarns, the non-conductive yarns are warp yarns, the conductive yarns are woven through structures of the back sides of the orthogonal non-conductive yarns after passing through the surface sides of the orthogonal non-conductive yarns, the heating parts are formed by interlacing, the two sides of the heating parts are respectively provided with metal electrodes, and the two metal electrodes are connected with an external power supply through a fabric circuit wire and used for obtaining a flexible fabric with a conductive heating function through loading voltage. The invention can increase the heating area through the design and distribution of the length and the density of the heating unit, improve the heating uniformity of the whole garment, and improve the heating uniformity and the heat and humidity comfort of the electric heating garment.
Description
Technical Field
The invention relates to the technical field of textiles, in particular to an electric heating textile and a preparation method thereof.
Background
The electric heating clothing utilizes a power supply to control an internal conductive heating element to convert electric energy into heat energy, so as to play a positive warming role, wherein the electric heating element is a core part for realizing the clothing function, and the preparation and corresponding integration modes on the clothing are divided into two types: one is to embed electric and heat conductive yarns on the garment in a heating area in a knitting, tatting, embroidering and other modes; the other is to coat and encapsulate the conductive heating paste to prepare a flexible heating sheet, and then place the flexible heating sheet in a clothing pocket or an interlayer in a detachable manner.
From the current market products, the method for directly weaving the conductive and exothermic metal wires or special yarns (alloy fibers, carbon fibers or yarns obtained by blending fibers coated with conductive substances and common fibers) as the heating units has high cost and complex process, and most of researches are stopped at the textile design stage of a laboratory. The flexible heating sheet prepared by the coating method has the advantages of low cost, flexible disassembly and convenient clothes cleaning, so the commercialization degree is high, and the electric heating down jackets, jacket, waistcoats and thermal underwear can be designed by arranging any number of electric heating elements in clothes interlayers at joints of the trunk or limbs. The design and the production mode are simple and quick, and the effect of raising the temperature in the whole garment can be achieved by firstly locally generating heat through the small area of the element and then conducting, convection and radiation in the wearing process.
Firstly, the uniformity of the conductive heating coating of the element is limited, so that the heating uniformity of the garment can be influenced; the coating cannot directly contact with a human body, so that a completely airtight and moisture impermeable fabric is often selected for covering and packaging, and the wet comfort of the garment can be affected after the garment is integrated; secondly, when the clothing is heated locally, the heat transfer efficiency of the part of the human body adjacent to the heat source is extremely low, the average temperature rising rate of the skin surface after the element works for a period of time is reduced along with the increase of the distance between the element and the heat source, and a significant temperature difference occurs between the heat source and the adjacent part. Especially in extremely cold environment, heat can not timely conduct and diffuse along the skin surface when the element heats and can cause local heat accumulation, but the cold and hot receptor reaction of a person is lagged at low temperature, so that the phenomenon that local high temperature reaches the skin tolerance limit can not be timely found, the phenomenon of 'low-temperature scalding' often occurs, the person can be in a local temperature difference state when wearing the electric heating clothing for a long time, the autonomous body temperature adjustment of the human body is influenced, and the health is not facilitated. Therefore, the development of the electric heating clothing needs to enlarge the area of the heating element as much as possible, reduce the local temperature difference of the human body and improve the thermal protection, the thermal comfort and the safety of the clothing.
At present, most of heating plates in the market are coated with conductive heating paste on a tightly woven composite fabric in a screen printing mode, and the mode is simple in process and low in cost, and the detachable heating element can be applied to various clothes and apparel. However, the coating process cannot ensure the absolute uniformity of the slurry distribution, and the heating uniformity of the final clothing can be affected; the moisture permeability and the air permeability of the packaging fabric are almost zero, so that the thermal wet comfort of the clothing can be affected; in addition, the preparation method of the coating mode is only suitable for developing a heating sheet with a regular rectangle, the heating area is inconvenient to adjust according to the clothing sheet, and the low heat transfer efficiency caused by the local heating of the small area of the clothing cannot be improved, so that an electric heating textile and the preparation method thereof are needed.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an electric heating textile and a preparation method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention comprises conductive yarns and non-conductive yarns, wherein the conductive yarns are weft yarns, the non-conductive yarns are warp yarns, the conductive yarns are woven through structures of the back sides of the plurality of orthogonal non-conductive yarns after passing through the front sides of the plurality of orthogonal non-conductive yarns, a heating part is formed by interweaving the conductive yarns, metal electrodes are respectively arranged on two sides of the heating part, and the two metal electrodes are connected with an external power supply through a fabric circuit wire and used for obtaining a flexible fabric with a conductive heating function through loading voltage.
Further, the conductive yarn is connected with an external power supply in parallel to form a heating unit of the heating part.
Further, the fabric weave structure of the flexible fabric is one of plain weave, twill weave or satin weave.
Further, the fabric circuit wire is a stainless steel conductive sewing thread.
Further, the non-conductive yarn can be obtained by blending one or more of alkali-free glass fiber, aramid fiber and spandex fiber.
Further, the conductive yarn is one of graphene modified yarn, alloy fiber, carbon fiber or conductive heating functional yarn modified by plating conductive substances on common yarn.
In another aspect, a method of making an electrically heated fabric includes the steps of:
a, determining the parallel connection number and interval density of conductive yarns;
b, determining the power design of the heating unit according to the shape, the size and the layout of the heating unit of the electric heating fabric, and weaving to obtain the electric heating fabric;
c, verifying resistance value: electrifying the woven sample, setting voltage, measuring the total resistance of the fabric, the resistance of the heating unit and the resistance value of the single conductive yarn by using a resistance meter, and then adjusting the resistance of the electric heating fabric.
Further, the fabric density of the conductive yarn is 100-300 pieces/cm, and the fabric density of the non-conductive yarn is 100-300 pieces/cm; the total fineness of the conductive yarn and the non-conductive yarn is 22-110 dtex respectively, and the resistance value of the conductive yarn is below 500 ohm/m.
Further, the method for power design of the heating unit of the electrically heated fabric comprises the following steps of
1) After the voltage is set, the total resistance of the fabric, the resistance of the heating unit and the resistance of the single conductive yarn can be directly obtained after the power-on test;
2) And calculating the relation between the length of the conductive yarn, the number of parallel connections, the spacing distance of the heating units and the electrothermal power of the textile under the condition through ohm law and power.
Compared with the prior art, the invention has the beneficial effects that:
1. the textile weave structure is a common ternary weave, warp yarns are non-conductive yarns, weft yarns are conductive yarns and non-conductive yarns are spaced, the width and length of the woven textile can be self-determined according to the needs, finally, the woven textile is cut and divided according to the clothing pattern, and a circuit is designed after sewing processing, so that the electric heating clothing capable of heating the whole body can be developed. The whole application process from yarn selection to fabric weaving and then processing the ready-made clothes is the same as the development process of common clothes.
2. The heating area can be increased through the design and distribution of the length and the density of the heating unit, and the heating uniformity of the whole garment is improved; compared with the heating sheet prepared by the coating method, the special warmth retention property, air permeability and moisture permeability of the textile can achieve positive heat generation effect on the garment and simultaneously has good wearing comfort.
3. The invention can adjust the weaving mode through the derivation of a rule formula according to the specific design of the product, and can be used for the research and development of various types of electric heating clothes, clothes and other wearable products. Firstly, determining conductive yarns, preliminarily determining the parallel connection number and the interval density of heating units, weaving samples, setting a certain voltage, and then carrying out power-on test to directly obtain the total resistance of the fabric, the resistance of the heating units and the resistance of single conductive yarn, and obtaining the relationship between the length of the conductive yarns, the parallel connection number, the interval distance of the heating units and the electrothermal power of the textile under the condition through ohm law and a power calculation formula. After the compensation heat required by a person working under a certain environmental condition is obtained through experiments or calculation before the product is developed, the basic parameters of textile weaving can be reversely deduced by bringing the compensation heat into a formula.
Drawings
Fig. 1 is a schematic diagram of a weaving structure of an electrically heated textile and a method for preparing the same according to the present invention;
FIG. 2 is a schematic diagram of a conductive heat-generating textile according to the present invention;
Detailed Description
Referring to fig. 1 and 2, the present invention includes conductive yarns and non-conductive yarns, the conductive yarns are weft yarns, the non-conductive yarns are warp yarns, the conductive yarns are woven through structures of back sides of the plurality of orthogonal non-conductive yarns after passing through the surface sides of the plurality of orthogonal non-conductive yarns, the heating parts are respectively provided with metal electrodes at both sides, and the two metal electrodes are connected with an external power supply through a fabric circuit wire to obtain a flexible fabric with a conductive heating function through loading voltage.
In this embodiment, the conductive yarn is connected to an external power source in parallel to form a heating unit of the heating unit.
In the clothing local heating process, the human body local obvious temperature difference phenomenon caused by low heat transfer efficiency of the adjacent part of the heat source is unfavorable for the human body health, and researches show that: the heat transfer efficiency can be improved by increasing the power of the electric heating element and increasing the thermal resistance of the clothing at the inner layer and the outer layer of the element, but the limitation of the safety voltage of a human body, the consumption cost of energy sources and the light and flexible demands of people on the clothing in life and work are considered, so that the conductive heating yarns are considered to be directly woven into the textile, and the heating area of the clothing is conveniently increased.
In this embodiment, the fabric weave structure of the flexible fabric is one of plain weave, twill weave, or satin weave.
In this embodiment, the fabric circuit wire is a stainless steel conductive sewing thread.
In this embodiment, the non-conductive yarn may be obtained by blending one or more of alkali-free glass fiber, aramid fiber and spandex fiber.
In this embodiment, the conductive yarn is one of a graphene modified yarn, an alloy fiber, a carbon fiber, or a conductive heating functional yarn modified by a conductive plating substance on a common yarn.
In this embodiment, a method for preparing an electrically heated fabric includes the steps of:
a, determining the parallel connection number and interval density of conductive yarns;
b, determining the power design of the heating unit according to the shape, the size and the layout of the heating unit of the electric heating fabric, and weaving to obtain an electric heating textile;
c, testing resistance value: electrifying the woven sample, setting voltage, measuring the total resistance of the fabric, the resistance of the heating unit and the resistance value of the single conductive yarn by using a resistance meter, and then adjusting the resistance of the electric heating fabric. .
The main materials of the conductive heating textile designed by the invention are as follows:
(1) Conductive yarn: the graphene modified yarn, the alloy fiber, the carbon fiber or the conductive substance plated conductive heating functional yarn is modified for the common yarn.
(2) Non-conductive yarn: alkali-free glass fiber, aramid fiber or spandex fiber with good air permeability and moisture permeability are selected according to the requirements of the clothing.
(3) A fabric circuit wire: is stainless steel conductive sewing thread or copper wire conductive sewing thread.
The embodiments are as follows:
(1) Selecting a fabric weave structure, namely, a common ternary weave (plain weave, twill weave and satin weave), wherein warp yarns of the upper loom are non-conductive yarns, and weft yarns are spaced between the conductive yarns and the non-conductive yarns.
(2) After the number of the conductive yarns of a group of heating units is determined, the conductive yarns are woven in a manual weft insertion mode in a parallel mode (the parallel mode is that the head ends of the conductive yarns in the woven fabric are connected with the head ends, the tail ends are connected with the tail ends, one pole of an external power supply is connected to the head ends of all the yarns, and the other pole is connected with the tail ends of all the conductive yarns), so that the contact area between the conductive yarns is increased, the resistance is reduced, the power consumption is reduced, the human safety voltage is adapted, and meanwhile, the heating uniformity inside the heating units is improved.
(3) The process of opening, weft insertion, beating-up and reeling is continuously carried out, the warp let-off is carried out, after the textile is woven, the textile can be cut according to the required size, and the lead wire externally connected with a power supply can use a stainless steel sewing thread or brush conductive paste on two sides of the textile.
(4) Derivation of heating element properties versus thermal power: taking a 2-up and 2-down twill weave structure, 4 graphene modified yarns are connected in parallel to form a group of heating units, and the conductive heating textile woven by design is exemplified by the space density of 1.5 cm.
In the embodiment, the fabric density of the conductive yarn is 200 pieces/cm, and the fabric density of the non-conductive yarn is 200 pieces/cm; the total fineness of the conductive yarn and the non-conductive yarn is 510dtex respectively, and the resistance value of the conductive yarn is 400 omega/.
The fabric has a width of 17cm, a length of 22m and an effective heating area of 0.0364m 2 The total resistance of the fabric is 90 omega after 12V voltage is applied by sewing stainless steel conductive yarns at two ends of a conductive part of the fabric, the resistance of each heating unit is 6.4 omega, and the resistance of the graphene modified yarns is 1.6 omega/17 cm. Through power p=u 2 The formula/R gives a textile power of 1.6W with a specification of 17cm by 22 cm.
The total heat required for clothing compensation is calculated after the metabolic condition of a person working under a certain environment is obtained through experiments, after the thermal power distribution is carried out on each part of the clothing, the resistance values of the whole resistance of the fabric and the resistance values of the heating units of a certain specification can be reversely deduced, the number and the interval density of each heating unit which are connected in parallel are adjusted based on the resistance values, and the method can be applied to the textile design of various electric heating wearable products.
Compared with a knitted fabric, the surface structure of the woven fabric formed by interweaving warp and weft yarns according to a certain rule is simpler and more stable, so that the invention selects the mode to weave the conductive heating yarn into the textile. When the conductive yarns are warp yarns, the electrical performance of the conductive yarns is poor due to strong abrasion in the weaving process; when the conductive yarns are warp and weft yarns at the same time, the woven electrothermal fabric can generate heat unevenly due to the existence of warp and weft interweaving points; therefore, the invention uses the non-conductive yarn as warp yarn, and the conductive yarn and the non-conductive yarn are arranged at intervals to be used as weft yarn.
Considering the safety voltage of human body, industry prescribes that the continuous contact safety voltage is required to be less than 24V, so that the conductive yarns are connected into a group of heating units in a parallel connection mode, the contact between the yarns can reduce the resistance, the heating uniformity inside the heating units is improved while the low-voltage condition is adapted, and the wearing safety of the clothing is ensured. The parallel number of the conductive yarns and the interval between the heating units in the weaving process are convenient to quantitatively calculate, namely the heating uniformity of the whole garment can be further improved by controlling the density of the heating units while the heating area is increased; in addition, the natural fiber yarns with good moisture permeability and air permeability are selected as the non-conductive yarns for weaving, so that the heat and moisture comfort of the conductive heating textile can be remarkably improved, meanwhile, the warp and weft yarns of the textile are staggered, and the heat and moisture exchange between the garment and the environment is promoted to a certain extent through pores among tissue points.
The method for designing the power of the heating unit for electrically heating the fabric comprises the following steps:
1) After the voltage is set, the total resistance of the fabric, the resistance of the heating unit and the resistance of the single conductive yarn can be directly obtained after the power-on test;
2) And calculating the relation between the length of the conductive yarn, the number of parallel connections, the spacing distance of the heating units and the electrothermal power of the textile under the condition through ohm law and power.
Example 1
Conductive yarn selection: the conductive yarn materials with good conductivity and heat resistance, such as silver fiber conductive yarns, are selected, and the specification and diameter of the conductive yarns are determined so as to meet the required resistance and electrothermal power requirements.
Heating unit design: a rectangular heating unit is designed, the size of the rectangular heating unit is 10 cm x10 cm, the number of parallel connection and the spacing density are determined, 20 conductive yarns are selected to be connected in parallel, and the spacing distance is 1 cm.
Sample weaving: sample weaving was performed using selected conductive yarns, which were woven into the fabric to form a heating unit, and 20 conductive yarns were uniformly woven into the 10 cm x10 cm fabric to form a heating unit.
Test resistance value: electrifying a woven sample, setting a specific voltage, measuring the total resistance of the fabric, the resistance of the heating unit and the resistance value of the single conductive yarn by using a resistance meter, setting the voltage to 10 volts, measuring the total resistance of the fabric to 5 ohms, and measuring the resistance of the heating unit to 4 ohms, wherein the resistance value of the single conductive yarn is 0.2 ohms.
Ohm law and power calculation: according to ohm's law and a power calculation formula, the relation among the length of the conductive yarn, the number of parallel connections, the interval distance between the heating units and the electrothermal power of the textile is calculated by using the measured resistance value, and according to different voltages and testing conditions, a series of data points can be obtained, for example, according to ohm's law, the length of the conductive yarn is 0.2 meter, and according to the power calculation formula, the electrothermal power of the textile is 40 watts.
Example 2
The textile to be heated needs to achieve 50 watts of electric heating power, and we now specifically calculate the length of the conductive yarn, the number of parallel connection and the distance between the heating units, and select the conductive yarn: conductive yarn materials with good conductivity and heat resistance, such as silver fiber conductive yarns, are selected. The conductive yarn diameter was assumed to be 0.1 mm.
Assume a rectangular heating unit is designed with dimensions of 20 cm x20 cm. For simplicity of calculation, assume that the number of parallel connections is 10, the distance between them is 2cm, and the samples are woven: the selected conductive yarns were woven into the fabric to form a heating unit, and 10 conductive yarns were uniformly woven into the 20 cm x20 cm fabric to form a heating unit.
Test resistance value: and electrifying, setting the voltage to be 10 volts, measuring the total resistance of the fabric, the resistance of the heating unit and the resistance value of the single conductive yarn by using a resistance meter, and assuming that the measured total resistance of the fabric is 10 ohms, the resistance of the heating unit is 8 ohms and the resistance value of the single conductive yarn is 0.8 ohms.
Ohm law and power calculation: and calculating the relation among the length of the conductive yarn, the number of parallel connections, the interval distance of the heating units and the electrothermal power of the textile by using the measured resistance value according to ohm law and a power calculation formula.
The length of a single conductive yarn is the resistance of the conductive yarn divided by the resistivity according to ohm's law. Assuming that the resistivity of the conductive yarn is 0.1 ohm/meter, the length of the individual conductive yarn is 0.8 ohm/0.1 ohm/meter = 8 meters.
According to the power calculation formula, the electrothermal power of the textile is equal to the resistance of the heating unit multiplied by the square of the voltage divided by the resistance of the heating unit plus the total resistance of the textile, assuming a voltage of 10 volts, then the electrothermal power of the textile is (8 ohms x10 volts 2)/(8 ohms +10 ohms) =40 watts.
In sum, according to the calculation, when the length of the conductive yarn is 8 meters, the number of the parallel connection yarns is 10, and the interval distance between the heating units is 2cm, the electric heating power of the textile reaches 50 watts.
According to the conductive heating textile, the heating unit and the garment are highly integrated, so that a detachable flexible electric heating sheet commonly used in local electric heating garments can be optimized, and electric heating garments with whole-body heating functions are developed; and simultaneously improves the heating uniformity and the heat and humidity comfort of the electric heating clothing.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. The electric heating textile is characterized by comprising conductive yarns and non-conductive yarns, wherein the conductive yarns are weft yarns, the non-conductive yarns are warp yarns, the conductive yarns are woven through structures of the back sides of the orthogonal non-conductive yarns after passing through the surface sides of the orthogonal non-conductive yarns, a heating part is formed, two sides of the heating part are respectively provided with metal electrodes, and the two metal electrodes are connected with an external power supply through a fabric circuit wire and used for obtaining a flexible fabric with a conductive heating function through loading voltage.
2. An electrically heated fabric as claimed in claim 1 wherein said electrically conductive yarns are connected in parallel with an external power source to form heating elements for said heating section.
3. An electrically heated fabric as in claim 1 wherein the weave structure of said flexible fabric is one of plain weave, twill weave or satin weave.
4. An electrically heated fabric as claimed in claim 1 wherein said fabric circuit conductors are stainless steel conductive sewing threads or copper conductive sewing threads.
5. An electrically heated fabric as claimed in claim 1 wherein said electrically non-conductive yarns are obtainable from one or more blends of alkali-free glass fibers, aramid fibers, spandex fibers.
6. The fabric of claim 1, wherein the conductive yarn is one of a graphene modified yarn, an alloy fiber, a carbon fiber, or a conductive heat-generating functional yarn modified from a conventional yarn by a conductive plating substance.
7. A method of making an electrically heated fabric comprising the steps of:
a, determining the parallel connection number and interval density of conductive yarns;
b, determining the power design of the heating unit according to the shape, the size and the layout of the heating unit of the electric heating fabric, and weaving to obtain an electric heating textile;
c, testing resistance value: electrifying the woven sample, setting voltage, measuring the total resistance of the fabric, the resistance of the heating unit and the resistance value of the single conductive yarn by using a resistance meter, and then adjusting the resistance of the electric heating fabric.
8. The method of producing an electrically heated fabric according to claim 7, wherein the conductive yarn has a fabric density of 100 to 300 pieces/cm and the non-conductive yarn has a fabric density of 100 to 300 pieces/cm; the total fineness of the conductive yarn and the non-conductive yarn is 22-110 dtex respectively, and the resistance value of the conductive yarn is below 500 ohm/m.
9. A method of preparing an electrically heated fabric as in claim 7 wherein the method of power design of the heating unit of the electrically heated fabric comprises:
1) After the voltage is set, the total resistance of the fabric, the resistance of the heating unit and the resistance of the single conductive yarn can be directly obtained after the power-on test;
2) And calculating the relation between the length of the conductive yarn, the number of parallel connections, the spacing distance of the heating units and the electrothermal power of the textile under the condition through ohm law and power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310760107.5A CN116791266A (en) | 2023-06-26 | 2023-06-26 | Electric heating textile and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310760107.5A CN116791266A (en) | 2023-06-26 | 2023-06-26 | Electric heating textile and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN116791266A true CN116791266A (en) | 2023-09-22 |
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| CN202310760107.5A Pending CN116791266A (en) | 2023-06-26 | 2023-06-26 | Electric heating textile and preparation method thereof |
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| Country | Link |
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| CN (1) | CN116791266A (en) |
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- 2023-06-26 CN CN202310760107.5A patent/CN116791266A/en active Pending
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