阅读说明：本技术 一种带石墨烯涂层的加热布 (Take heating cloth of graphite alkene coating ) 是由 刘磊 于 2019-10-14 设计创作，主要内容包括：本申请属于加热布技术领域,具体涉及一种带石墨烯涂层的加热布。本发明公开了一种带石墨烯涂层的加热布,包括导电布1、石墨烯涂层2、导线3、电源接头4；所述石墨烯涂层2设置于导电布1的上表面和/或下表面；所述导线3的一端与导电布1连接,另一端与电源接头4连接。石墨烯是一种新型的二维碳纳米材料,具有导电性高、力学性能好、耐腐蚀等优点。同时石墨烯加热膜能够产生对人体有益的4-15微米远红外波,可以改善血液循环,缓解疲劳、并增强生物体的新陈代谢。本发明通过在金属导电布上增加石墨烯涂层,可以通过高导热石墨烯提高加热布的温度均匀性,并能激发4-15微米远红外波,实现远红外理疗目的。(The application belongs to the technical field of heating cloth, and in particular relates to heating cloth with a graphene coating. The invention discloses heating cloth with a graphene coating, which comprises conductive cloth 1, a graphene coating 2, a lead 3 and a power connector 4; the graphene coating 2 is arranged on the upper surface and/or the lower surface of the conductive cloth 1; one end of the lead 3 is connected with the conductive cloth 1, and the other end is connected with the power connector 4. Graphene is a novel two-dimensional carbon nanomaterial and has the advantages of high conductivity, good mechanical properties, corrosion resistance and the like. Meanwhile, the graphene heating film can generate 4-15 micron far-infrared waves beneficial to a human body, so that blood circulation can be improved, fatigue can be relieved, and metabolism of organisms can be enhanced. According to the invention, the graphene coating is added on the metal conductive cloth, so that the temperature uniformity of the heating cloth can be improved through the high-thermal-conductivity graphene, and 4-15 micron far-infrared waves can be excited, thereby realizing the far-infrared physiotherapy purpose.)

1. The heating cloth with the graphene coating is characterized by comprising conductive cloth (1), the graphene coating (2), a lead (3) and a power connector (4);

the graphene coating (2) is arranged on the upper surface and/or the lower surface of the conductive cloth (1);

one end of the lead (3) is connected with the conductive cloth (1), and the other end is connected with the power connector (4).

2. The heating cloth with the graphene coating according to claim 1, wherein the conductive cloth (1) is composed of a main body cloth (11) and conductive strips (12), and the conductive strips (12) are woven at both ends of the conductive cloth (1).

3. The graphene-coated heating cloth according to claim 1, wherein the main cloth (11) is prepared from high-resistance conductive filaments (111) and first non-conductive filaments (112) by a warp knitting manner; the conductive band (12) is prepared from low-resistance conductive filaments (121) and second non-conductive filaments (122) in a warp knitting mode.

4. The graphene-coated heating cloth according to claim 3, wherein the high-resistance conductive filaments (111) are arranged at intervals in the transverse direction, the interval between two adjacent high-resistance conductive filaments (111) is less than 2cm, and the interval region is supplemented by the first non-conductive filament (112); the low-resistance conductive wires (121) are arranged at intervals in the longitudinal direction, the interval between every two adjacent low-resistance conductive wires (121) is smaller than 1mm, and the interval area is supplemented by second non-conductive wires (122).

5. The graphene-coated heating cloth according to claim 4, wherein the high-resistance conductive filaments (111) have an electrical resistivity of 300 to 90000 ohm-meters, and the low-resistance conductive filaments (121) have an electrical resistivity of less than 10 ohm-meters.

6. The graphene-coated heating cloth according to claim 5, wherein the high-resistance conductive filaments (111) have an electrical resistivity of 500-3000 ohm-meters, and the low-resistance conductive filaments (121) have an electrical resistivity of less than 8 ohm-meters.

7. The graphene-coated heating cloth according to claim 1, wherein the graphene coating (2) has a thickness of less than 50 μm.

8. The graphene-coated heating cloth according to claim 2, wherein the thickness of the main body cloth (11) is 0.1 to 2mm, and the thickness of the conductive tape (12) is 0.1 to 2 mm.

9. The graphene-coated heating cloth according to claim 1, wherein the graphene coating (2) is prepared by coating a graphene slurry on the conductive cloth (1) and heating and drying.

10. A method for preparing a graphene-coated heating cloth according to any one of claims 3 to 9, comprising the steps of:

the method comprises the following steps: weaving the high-resistance conductive filaments, the low-resistance conductive filaments, the first non-conductive filaments and the second non-conductive filaments into conductive cloth by warp knitting equipment;

step two: coating the graphene slurry on a conductive cloth, and heating and drying;

step three: cutting the conductive cloth obtained in the second step into a fixed size, wherein one end of the conducting wire is connected with the conductive belt of the conductive cloth, and the other end of the conducting wire is connected with a power supply.

Technical Field

The application belongs to the technical field of heating cloth, and in particular relates to heating cloth with a graphene coating.

Background

The excellent performance of the graphene completely exceeds that of metal, such as, electrical performance: the electron mobility can reach 2 multiplied by 105cm2/Vs at room temperature, and the heat conduction performance is as follows: 5000W/(mK), extraordinary specific surface area (2630m2/g), Young's modulus (1100GPa) and breaking strength (125 GPa); the good mechanical property and the lower density of the graphene enable the graphene to have the potential of replacing metal in the field of electric heating materials.

The graphene electric heating film or heating film appears in the market at present, for example, CN107820340A discloses a graphene heating film, which comprises a graphene heating wire, a heating cloth obtained by weaving textile silk threads and conductive strip threads through a warp and weft weaving method, and a polymer material layer compounded on two sides of the heating cloth, wherein the textile silk threads woven by the graphene heating wire are warp threads, the conductive strip threads woven by the textile silk threads are weft threads, the graphene heating wire is woven after the warp threads are 4-8 textile silk threads, and two conductive strip threads are woven in the weft threads in each heating cloth as positive and negative electrodes which are electrically connected. However, the graphene heating wire needs to be produced through a complex wire making process, and the conductivity of the graphene wire is difficult to control, so that the preparation cost is high, and the large-scale application is not facilitated.

Disclosure of Invention

In order to solve the technical problem, the heating cloth with the graphene coating in the first aspect of the invention comprises a conductive cloth 1, a graphene coating 2, a lead 3 and a power connector 4;

the graphene coating 2 is arranged on the upper surface and/or the lower surface of the conductive cloth 1;

one end of the lead 3 is connected with the conductive cloth 1, and the other end is connected with the power connector 4.

As a preferable technical solution, the conductive cloth 1 is composed of a main body cloth 11 and a conductive band 12, and the conductive band 12 is woven at both ends of the conductive cloth 1.

As a preferable technical solution, the main body fabric 11 is prepared by high-resistance conductive filaments 111 and first non-conductive filaments 112 by a warp knitting manner; the conductive band 12 is prepared by low-resistance conductive filaments 121 and second non-conductive filaments 122 in a warp knitting manner.

As a preferable technical solution, the high-resistance conductive filaments 111 are arranged at intervals in the transverse direction, the interval between two adjacent high-resistance conductive filaments 111 is less than 2cm, and the interval area is supplemented by the first non-conductive filaments 112; the low-resistance conductive threads 121 are arranged at intervals in the longitudinal direction, the interval between every two adjacent low-resistance conductive threads 121 is smaller than 1mm, and the interval area is supplemented by second non-conductive threads 122.

As a preferable technical solution, the resistivity of the high-resistance conductive filament 111 is 300 to 90000 ohm-meters, and the resistivity of the low-resistance conductive filament 121 is less than 10 ohm-meters.

As a preferable technical solution, the resistivity of the high-resistance conductive filament 111 is 500 to 3000 ohm-meter, and the resistivity of the low-resistance conductive filament 121 is less than 8 ohm-meter.

As a preferred technical solution, the thickness of the graphene coating 2 is less than 50 micrometers.

As a preferable technical scheme, the thickness of the main body cloth 11 is 0.1-2mm, and the thickness of the conductive band 12 is 0.1-2 mm.

As a preferable technical scheme, the graphene coating is prepared by coating graphene slurry on a conductive cloth, and heating and drying.

The second aspect of the invention provides a preparation method of the heating cloth with the graphene coating, which comprises the following steps:

the method comprises the following steps: weaving the high-resistance conductive filaments, the low-resistance conductive filaments, the first non-conductive filaments and the second non-conductive filaments into conductive cloth by warp knitting equipment;

step two: coating the graphene slurry on a conductive cloth, and heating and drying;

step three: cutting the conductive cloth obtained in the second step into a fixed size, wherein one end of the conducting wire is connected with the conductive belt of the conductive cloth, and the other end of the conducting wire is connected with a power supply.

Has the advantages that: graphene is a novel two-dimensional carbon nanomaterial and has the advantages of high conductivity, good mechanical properties, corrosion resistance and the like. Meanwhile, the graphene heating film can generate 4-15 micron far-infrared waves beneficial to a human body, so that blood circulation can be improved, fatigue can be relieved, and metabolism of organisms can be enhanced. According to the invention, the graphene coating is added on the metal conductive cloth, so that the production cost of the heating film is reduced, the temperature uniformity of the heating cloth can be improved through the high-thermal-conductivity graphene, and the far infrared wave of 4-15 microns can be excited, so that the far infrared physiotherapy purpose is realized.

Drawings

Fig. 1 is a schematic structural diagram of a heating cloth with a graphene coating.

Fig. 2 is a schematic structural diagram of the graphene coating layer disposed on the upper surface and the lower surface of the conductive cloth.

Fig. 3 is a schematic structural diagram of the graphene coating layer disposed on the upper surface of the conductive cloth.

Fig. 4 is an infrared view of the heating cloth of example 1.

Fig. 5 is a schematic structural diagram of a graphene-coated heating cloth with a controller.

Description of the symbols: 1-conductive cloth; 2-graphene coating; 3-a wire; 4-power connection; 5-a controller; 11-main body cloth, 12-conductive band, 111-high resistance conductive filament, 112-first non-conductive filament, 121-low resistance conductive filament, and 122-second non-conductive filament.

Detailed Description

In order to solve the problems, the invention provides a heating cloth with a graphene coating, which comprises a conductive cloth 1, a graphene coating 2, a lead 3 and a power connector 4;

the graphene coating 2 is arranged on the upper surface and/or the lower surface of the conductive cloth 1;

one end of the lead 3 is connected with the conductive cloth 1, and the other end is connected with the power connector 4.

The thickness of the graphene coating 2 is less than 50 microns.

As a preferred embodiment, the conductive cloth 1 is distributed in a curved shape at the interface between the conductive cloth 1 and the graphene coating 2. The contact area of the graphene coating and the conductive cloth can be increased, and the conductive efficiency and the heating efficiency are improved.

Conductive cloth

In a preferred embodiment, the conductive cloth 1 is composed of a main body cloth 11 and a conductive belt 12.

The conductive strips 12 are woven at the two ends of the conductive cloth 1, and the number of the conductive strips 12 is not limited.

The conductive strips 12 are woven at the two ends and the same side of the conductive cloth 1.

The thickness of the main body cloth 11 is 0.1-2mm, and the thickness of the conductive band 12 is 0.1-2 mm.

In a more preferred embodiment, the main body fabric 11 is made of high-resistance conductive filaments 111 and first non-conductive filaments 112 by a warp knitting method.

In a more preferred embodiment, the conductive band 12 is made of low-resistance conductive filaments 121 and second non-conductive filaments 122 by warp knitting.

The warp knitting refers to a method for connecting warp wale loops into a fabric in knitting.

The width of the conductive tape 12 is not particularly limited, and may be set according to the size of the conductive cloth, for example: 6mm in width, 8mm in width, 10mm in width, 11mm in width, and the like.

In the application, the high-resistance conductive filaments 111 are arranged at intervals in the transverse direction, the interval between two adjacent high-resistance conductive filaments 111 is less than 2cm, and the interval area is supplemented by the first non-conductive filaments 112; the low-resistance conductive threads 121 are arranged at intervals in the longitudinal direction, the interval between every two adjacent low-resistance conductive threads 121 is smaller than 1mm, and the interval area is supplemented by second non-conductive threads 122.

In a preferred embodiment, the high-resistance conductive filaments 111 are arranged at intervals in the transverse direction, the interval between two adjacent high-resistance conductive filaments 111 is less than 1cm, and the interval area is supplemented by the first non-conductive filaments 112; the low-resistance conductive threads 121 are arranged at intervals in the longitudinal direction and are woven at two ends of the conductive cloth 1, the interval between every two adjacent low-resistance conductive threads 121 is smaller than 1mm, and the interval area is supplemented by second non-conductive threads 122.

In a more preferable embodiment, the high-resistance conductive filaments 111 are arranged at intervals in the transverse direction, the interval between two adjacent high-resistance conductive filaments 111 is 0.5-1cm, and the interval area is supplemented by the first non-conductive filaments 112; the low-resistance conductive threads 121 are arranged at intervals in the longitudinal direction and are woven at two ends of the conductive cloth 1, the interval between every two adjacent low-resistance conductive threads 121 is smaller than 1mm, and the interval area is supplemented by second non-conductive threads 122.

In the application, the resistivity of the high-resistance conductive filament 111 is 300-90000 ohm-meter, and the resistivity of the low-resistance conductive filament 121 is less than 10 ohm-meter.

In a preferred embodiment, the resistivity of the high-resistance conductive filaments 111 is 500 to 3000 ohm-meters, and the resistivity of the low-resistance conductive filaments 121 is less than 8 ohm-meters.

As a preferred embodiment, the high-resistance conductive yarn and the low-resistance conductive yarn are selected from a spinning yarn which takes one of silver, copper, silver, zinc, tin, iron, aluminum or an alloy thereof as a conductive material, and include, but are not limited to, copper-plated nylon yarn, silver-plated nylon yarn, stainless steel-containing polyester blended yarn, copper-plated polyester yarn and aluminum-containing polyester filament yarn.

The high-resistance conductive filaments 111 and the low-resistance conductive filaments 121 are not particularly limited, and may be made by the user or purchased.

For example: the preparation method of the copper-plated nylon yarn comprises the following steps: (1) coarsening: roughening the nylon fabric in an acid roughening solution (10% dilute hydrochloric acid, 40 ℃, 15min, and a loading ratio of 1: 200), (2) sensitizing and activating: then, putting the coarsened fabric into sensitizing solution for dipping, so that stannous hydroxide or stannous oxide generated by hydrolyzing stannous salt is deposited on the surface of the fabric, the deposit is used as a reducing agent during activation treatment, and palladium ions in the activating solution are reduced into metal palladium by stannous ions; (3) and (3) gel releasing: then putting the fabric into a hydrochloric acid solution with a certain concentration to dissolve the partially hydrolyzed divalent and tetravalent tin ions, and exposing metal palladium with catalytic activity; (4) reduction: soaking the fabric after the degumming into a reducing solution, adsorbing a reducing agent on the surface of the fabric, reducing palladium ions into metal particles and depositing the metal particles on the surface of the fabric; (5) neutralizing: neutralizing the fabric subjected to dispergation reduction treatment to make the surface of the fabric alkaline; (6) copper plating: putting the fabric into chemical copper plating solution (20 g/L of copper sulfate, 7.9g/L of nickel sulfate, 75g/L of sodium hypophosphite, 30g/L of sodium citrate, 35g/L of boric acid and 80 ℃) to obtain the fabric.

The purpose of controlling the resistance of the conductive wire is achieved by controlling the proportion of the metal.

The aluminum-containing polyester filament yarn is formed by depositing aluminum on the surface of polyester through methods such as vapor deposition, chemical reduction and the like.

In the present application, the materials of the first non-conductive filament 112 and the second non-conductive filament 122 may be the same or different.

The first non-conductive yarn 112 and the second non-conductive yarn 122 are respectively and independently selected from at least one of cotton, wool, hemp, silk, spandex, terylene, viscose fiber, acrylon, chinlon, vinylon, polypropylene fiber, aramid fiber, glass fiber and ceramic fiber.

Graphene coating

The graphene coating is prepared by coating graphene slurry on conductive cloth and heating and drying.

As a preferred embodiment, the graphene coating 2 is disposed on the upper surface and the lower surface of the conductive cloth 1.

As another preferred embodiment, the graphene coating 2 is disposed on the upper surface of the conductive cloth 1.

In the application, the graphene slurry is composed of graphene, an auxiliary conductive agent, resin and an auxiliary material.

The auxiliary conductive agent is selected from one or more of carbon nano tube, carbon fiber, carbon black, silver and copper.

The resin is selected from at least one of natural resin, synthetic resin and modified resin.

The resin can improve the binding force between the graphene coating 2 and the conductive cloth 1 and is beneficial to heat conduction.

The natural resin refers to amorphous semisolid or solid organic matter mainly derived from plant exudation (excretion), and examples of the natural resin include, but are not limited to, resin composed of terpenoid and crude essence oil, gum-containing ester composed of polysaccharide, resin containing more essential oil and capable of dissolving in oil.

The synthetic resin is a synthetic high molecular weight polymer, and is a resin which has or exceeds the inherent characteristics of natural resin. Examples of synthetic resins include, but are not limited to, epoxy resins, phenolic resins, melamine formaldehyde resins, polyester resins, silicone resins.

The modified resin is obtained by adding functional groups to the original resin, so that the properties of the original resin, such as high temperature resistance, hydrolysis resistance, water solubility and the like, are improved. Examples of the modified resin include, but are not limited to, modified epoxy resins, modified phenol resins, modified melamine formaldehyde resins, modified polyester resins, and modified silicone resins.

In a preferred embodiment, the resin is at least one selected from the group consisting of epoxy resin, phenol resin, polyester resin, unsaturated polyester resin, silicone resin, fluorocarbon resin, acrylic oligomer, alkyd resin, vinyl resin, polyamide resin, vinyl chloride-vinyl acetate resin, polyurethane resin, and polyvinylidene fluoride resin.

As a more preferred embodiment, the resin is polyurethane and/or vinyl chloride.

The applicant has also found that the resin can be replaced by synthetic cellulose, rubber, without affecting the object of the invention.

The addition agent is added into the graphene coating, so that the binding force of the graphene coating can be improved, the surface smoothness is improved, the service life of the graphene coating is prolonged, and the like.

The auxiliary agent is at least one selected from a solvent, a dispersing agent, a stabilizing agent, a protective agent, a film forming agent, a coupling agent, a plasticizer, an antifoaming agent, a thickening agent, a wetting agent, a leveling agent, a thixotropic agent, a cross-linking agent, a bactericide, a photoinitiator, a thermal initiator and an ultraviolet absorber.

The solvent is selected from one or more of water, aromatic hydrocarbons, aliphatic hydrocarbons, alicyclic hydrocarbons, halogenated hydrocarbons, alcohol ethers, esters, ketones, glycol derivatives and mineral oil.

For example, the adjuvant is selected from sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, polyvinyl alcohol, sodium lignosulfonate, cetyltrimethylammonium bromide, polyvinylpyrrolidone, polyoxyethylene lauryl ether, potassium lauryl ether phosphate, fatty alcohol polyoxyethylene ether, ethylene glycol monobutyl ether, propylene glycol monobutyl ether, dipropylene glycol methyl ether ester, ethylene glycol propyl ether, dipropyl ether, propylene glycol phenyl ether, benzyl alcohol, lauryl alcohol ester, benzalkonium chloride, isothiazolinone, gamma-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane and N- (2-aminoethyl) -3-aminopropylmethyldiethoxysilane, (3,3, 3-trifluoropropyl) trimethoxysilane, sodium lignosulfonate, cetyltrimethylammonium bromide, polyvinylpyrrolidone, laureth-oxide, laureth-phosphate, fatty alcohol polyoxyethylene ether, ethylene glycol monobutyl ether, propylene glycol monobutyl ether, dipropylene glycol methyl ether ester, ethylene glycol propyl ether, dipropyl ether, Benzophenone compounds, benzotriazole compounds, 2-hydroxy-2-methyl-1-phenyl-1-propanone, 1-hydroxycyclohexyl phenyl propanone, 2-methyl-1- (4-methylthiophenyl) -2-morpholine-1-propanone, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butanone, phenylbis (2,4, 6-trimethylbenzoyl) phosphine oxide, benzoin dimethyl ether, benzoin ethyl ether and the like.

As a more preferred embodiment, the auxiliary agent is at least one selected from polyvinylpyrrolidone, ammonium polyacrylate, and dibasic acid ester.

The dibasic ester refers to DBE high boiling point solvent mixed dibasic ester, DBE is a mixture composed of three dibasic esters, commonly called nylon acid methyl ester, and is prepared from succinic acid (succinic acid) dimethyl ester CH₃OOC(CH₂)₂COOCH₃Dimethyl glutarate CH₃OOC(CH₂)₃COOCH₃And adipic acid dimethyl ester CH₃OOC(CH₂)₄COOCH₃A combination of three good environment solvents.

The preparation method of the heating cloth with the graphene coating comprises the following steps:

the method comprises the following steps: weaving the high-resistance conductive filaments, the low-resistance conductive filaments, the first non-conductive filaments and the second non-conductive filaments into conductive cloth by warp knitting equipment;

step two: coating the graphene slurry on a conductive cloth, and heating and drying;

step three: cutting the conductive cloth obtained in the second step into a fixed size, wherein one end of the conducting wire is connected with the conductive belt of the conductive cloth, and the other end of the conducting wire is connected with a power supply.

As a preferred embodiment, the graphene paste coating manner includes one of screen printing, gravure printing, spray coating, knife coating, roll coating, and dip coating.

The application adopts high-resistance conductive wires and non-conductive wires; the low-resistance conductive wires and the non-conductive wires are knitted in a warp knitting mode, then the graphene coating is coated on the conductive cloth to obtain heating cloth with high heating rate, particularly the interval between two adjacent high-resistance conductive wires is less than 2cm, and the interval area is supplemented by the first non-conductive wire; the low-resistance conductive wires are arranged at intervals in the longitudinal direction and woven at two ends of the conductive cloth, the interval between every two adjacent low-resistance conductive wires is smaller than 1mm, and when the interval area is supplemented by the second non-conductive wires, the temperature of the obtained conductive cloth is uniformly distributed. The possible reasons are: the graphene coating can be in good contact with the conductive cloth, and the high-resistance conductive wires, the non-conductive wires and the low-resistance conductive wires are regularly arranged, so that a uniform and continuous transmission network structure is formed in the conductive cloth, the resistance of the conductive cloth is proper, and after a certain voltage is applied to the conductive cloth, electric energy can be effectively converted into heat energy.

As a preferred embodiment, a power controller 5 is further included on the wire, as shown in fig. 5. The current size, the electrifying interval, the electrifying time and the temperature can be adjusted.

The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.

In addition, the starting materials used are all commercially available, unless otherwise specified.