CN105491695B - A kind of two-dimensional nano carbon heating body, flexible electrical heating module and preparation method thereof - Google Patents
A kind of two-dimensional nano carbon heating body, flexible electrical heating module and preparation method thereof Download PDFInfo
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- CN105491695B CN105491695B CN201511029718.4A CN201511029718A CN105491695B CN 105491695 B CN105491695 B CN 105491695B CN 201511029718 A CN201511029718 A CN 201511029718A CN 105491695 B CN105491695 B CN 105491695B
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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
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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
- H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
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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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/013—Heaters using resistive films or coatings
Abstract
A kind of two-dimensional nano carbon heating body, flexible electrical heating module and preparation method thereof.The two-dimensional nano carbon heating body includes: at least one membranaceous electrothermal structure, the membranaceous electrothermal structure includes the porous structure being mainly made of multilayer two-dimension carbon nano tube network, and in plane corresponding with the membranaceous electrothermal structure, the conductivity of the membranaceous electrothermal structure in a selected direction is greater than conductivity of the membranaceous electrothermal structure on remaining direction for being different from the preferential direction；At least two flexible electrodes are arranged along the direction initialization interval, and are electrically connected with the membranaceous electrothermal structure.Two-dimensional nano carbon heating body of the present invention is not necessarily in conjunction with matrix, have the characteristics that light, thin, ventilative, large area preparation can be achieved, when flexible electrical heating module is made, convenient for cutting processing, and it is high to still keep electricity/thermal conversion efficiency, rapidly, uniformly, radiation efficiency is high for fever for heating, the features such as electric stability is excellent is suitable for preparing wearable product.
Description
Technical field
The present invention relates to a kind of electric heating products, and in particular to a kind of two-dimensional nano carbon heating body, flexible electrical heating module
And preparation method thereof.
Background technique
Electric heating material is to generate the material of thermal energy using heating effect of current, civilian and be industrially widely used.
Common thermo electric material can be divided into two class of metal electric heating material and non-metal electrothermal material.Metal class thermo electric material mainly includes expensive
Metal (Pt), high temperature melting point metals (W, Mo, Ta, Nb) and its alloy, nickel-base alloy and iron aluminum series alloy.Non-metal electrothermal material
Mainly there are carbon fiber, silicon carbide, Lanthanum Chromite, zirconium oxide, molybdenum disilicide etc..Simple metal electric heating body and non-metal electrothermal material
All there are some problems, for example, high-temperature creep resistance and Toughness are lower, the Flexible Abilities such as bend resistance, anti-rubbing are not
Ideal, especially metal class thermo electric material have corrosion resistance poor, and circuit integration manufacturing process is etched dependent on strong acid and deposited
The security risk the disadvantages of.
In recent years, the nano-carbon materials such as carbon nanotube, graphene because mechanics, electricity, calorifics, in terms of
Excellent performance is shown, is also gradually applied to prepare electric heating material and element, and increasingly by researcher's
Favor.It is knitted for example, having the more plane heat source about based on carbon nano-tube film, carbon nano-tube fibre etc., line heat source, electric heating at present
The report of object etc., these reports see CN101090586A, CN101400198A, CN101090586A, CN101192490A
Deng.But all more or less there are some defects in these existing electrical heating elements etc. in the application.With public in CN101090586A
For the nanometer flexible electric heating material opened, wherein carbon nanotube is dispersed in flexible substrate, can if content of carbon nanotubes is high
There are serious agglomeration, cause each local heating property of the thermo electric material uneven, if content of carbon nanotubes is low, the thermo electric material
Thermal response speed and electric conversion efficiency will be lower, heating temperature is not high, and these flexible substrates can only selective polymer material
Material, temperature capacity are poor.Again by taking a kind of plane heat source that the researchers such as Fan Shoushan propose as an example comprising a heating element, the heating
Element includes the carbon nano tube structure of the self-supporting of matrix and one, and the carbon nano tube structure includes at least one layer of carbon nanotube
Laminate, adjacent carbon nanotube mutually partially overlaps in each layer of carbon nanotube laminate, and is mutually inhaled by Van der Waals force
Draw, combines closely；At least two electrode gaps are arranged and are electrically connected with the heating element.In the plane heat source carbon nanotube need to it is certain
The matrix of thickness is joined integrally, therefore on the one hand more difficult may meet light, thin, ventilative requirement, on the other hand also relatively difficult to achieve
The plane heat source of large area, when in use also substantially can not according to practical application demand and cut randomly, cannot construct well
Soft, frivolous wearable heating product.
Summary of the invention
The main purpose of the present invention is to provide a kind of two-dimensional nano carbon heating body, flexible electrical heating module and its preparation sides
Method, to overcome deficiency in the prior art.
For realization aforementioned invention purpose, the technical solution adopted by the present invention includes:
The embodiment provides a kind of two-dimensional nano carbon heating bodies comprising:
At least one membranaceous electrothermal structure, the membranaceous electrothermal structure include mainly to be made of multilayer two-dimension carbon nano tube network
Porous structure, the aperture of the membranaceous electrothermal structure contained hole is 1~100nm, porosity 30% or more, and with it is described
In the corresponding plane of membranaceous electrothermal structure, the conductivity of the membranaceous electrothermal structure in a selected direction is greater than the membranaceous electricity
Conductivity of the heat structure on remaining direction for being different from the preferential direction；
At least two flexible electrodes, at least two flexible electrode are arranged along the direction initialization interval, and with it is described
Membranaceous electrothermal structure electrical connection.
The embodiment of the invention also provides a kind of flexible electrical heating module, it includes:
Nanometer heating layer, comprising the two-dimensional nano carbon heating body,
And it is directly combined to two flexible surface layers of the opposite both side surface of the nanometer heating layer；
Wherein at least one flexible surface layer is heat carrier and can make two-dimensional nano carbon heating body production when work
Raw heat radiation penetrates, and the temperature that two flexible surface layers are resistant to is above the two-dimensional nano carbon heating body with most
The temperature generated when big operating power work.
The embodiment of the invention also provides a kind of methods for preparing the flexible electrical heating module comprising:
Membranaceous electrothermal structure described in providing at least one, and at least one membranaceous electrothermal structure is cut to required shape；
Flexible electrode described in providing at least two, and by least two flexible electrode along the direction initialization interval
Setting, and it is electrically connected at least two flexible electrode with the membranaceous electrothermal structure, to constitute the two-dimensional nano
Carbon heating body；
Using the two-dimensional nano carbon heating body as nanometer heating layer, and two flexible surface layers are directly pasted
Close the opposite both side surface in the nanometer heating layer.
Preferably, the preparation method may also include to by the nanometer heating layer and two flexible surface layer's shapes
At interlayer structure suppressed and the operation that keeps the triplicity integral.
Compared with prior art, the invention has the advantages that the two-dimensional nano carbon heating body is not necessarily in conjunction with matrix,
Have the characteristics that it is light, thin, it can be achieved that large area prepare, can be any according to actual needs when flexible electrical heating module is made
It cuts, it is easy to process, and electricity/thermal conversion efficiency height can be still kept, heating rapidly, is generated heat uniformly, radiation efficiency height, and electric heating is steady
The features such as qualitative excellent, particularly suitable for wearable heating health care product is prepared.
Detailed description of the invention
Fig. 1 is a kind of SEM figure of carbon nano-tube film in a preferred embodiment of the invention；
Fig. 2 is a kind of structural schematic diagram of two-dimensional nano carbon heating body in a preferred embodiment of the invention；
Fig. 3 is a kind of structural schematic diagram of flexible electrical heating module in a more typical embodiment of the invention；
Fig. 4 is the structural schematic diagram of another flexible electrical heating module in a more typical embodiment of the invention.
Specific embodiment
The exemplary embodiments for embodying feature of present invention and advantage will describe in detail in the following description.It should be understood that this
Invention can have various variations in different embodiments, neither depart from the scope of the present invention, and it is therein explanation and
Diagram inherently is illustrated as being used, rather than to limit the present invention.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
A kind of two-dimensional nano carbon heating body provided in the first embodiment of the present invention includes:
At least one membranaceous electrothermal structure, the membranaceous electrothermal structure include mainly to be made of multilayer two-dimension carbon nano tube network
Porous structure, the aperture of the membranaceous electrothermal structure contained hole is 1~100nm, porosity 30% or more, and with it is described
In the corresponding plane of membranaceous electrothermal structure, the conductivity of the membranaceous electrothermal structure in a selected direction is greater than the membranaceous electricity
Conductivity of the heat structure on remaining direction for being different from the preferential direction；
At least two flexible electrodes, at least two flexible electrode are arranged along the direction initialization interval, and with it is described
Membranaceous electrothermal structure electrical connection.
Described " two dimension " system refers to the structure extended along two-dimensional directional, but it is not intended to be limited to complete plane,
And it can be with certain thickness film, laminar structured etc..
For example, in one specific embodiment, referring to Fig. 2, the two-dimensional nano carbon heating body may include described in one
Membranaceous electrothermal structure 100 and two flexible electrodes 200,300, two flexible electrodes are along the direction initialization (such as arrow institute
Show direction) interval setting, and be electrically connected with the membranaceous electrothermal structure.
Wherein, after connecting two flexible electrodes with low-tension supply, electric current can along two flexible electrodes rapidly from
Pass through in the membranaceous electrothermal structure, so that the membranaceous electrothermal structure be driven to generate heat and heat radiation rapidly.
Wherein, which is preferably with self supporting structure
Carbon nano-tube film be still able to maintain itself intrinsic form in the case where no support body supports.The carbon nano-tube film has
A large amount of aforementioned aperture range three-dimensional hole configurations, can make the carbon nano-tube film keep higher force intensity (such as
Tensile strength is in 80MPa or more, resistance to rubbing) and preferable gas permeability under the premise of have lesser surface density (about 3~15g/m2),
More frivolous softness, at the same so that the carbon nano-tube film is kept lower surface resistance (on the preferential direction, conductivity exists
1.0×104S/m or more) and larger current current-carrying capability (about 10~50A/mm2), that is, ensure that it has more highly conductive ability.
Further, the carbon nanotube in the carbon nano-tube film includes single-walled carbon nanotube, double-walled carbon nano-tube and multi wall
One of carbon nanotube is a variety of.
More preferred, which can be is received using the large area carbon directly prepared by chemical vapour deposition technique
Mitron film, the film arbitrarily bending fold and cutting, thickness preferably can be controlled in 3~50 μm, and surface density preferably controls
In 3~15g/m2, have the characteristics that light, soft, ventilative, high conductivity, high current bearing capacity.For example, in the choosing
Determine the conductivity about 1.0 × 10 on direction4~1.0 × 106S/m, tensile strength about 80~200MPa, please refers to Fig. 1.
For example, one kind prepares the big face with floating catalytic chemical vapour deposition technique in an embodiment of the invention
The technique of carbon distribution nano-tube film may include:
1) carbon raw material, metallic catalyst and reaction promoter reactant are input in reactor by injection device.
2) carbon nanotube is formed by catalytic pyrolysis in the gas phase in the reaction vessel.
3) carbon nanotube formed in step 2) is mechanically spun, is wrapped on roller.
4) carbon nanotube being wrapped on roller in step 3) is rolled by different degrees of, can be formed has difference
The carbon nano-tube film of density structure.
In above-mentioned steps, the injection device can use syringe pump, liquid ejector or ultrasonic atomizatio injection device,
Single hole or porous series connection side-by-side configuration can be used in injection mode.
The carbon raw material is hydrocarbon gas, carbonaceous organic material and mixed carbon source.Hydrocarbon gas include methane, ethylene or
Acetylene etc.；Hydrocarbon organic matter includes ethyl alcohol, acetone, ethylene glycol, ether, benzene or n-hexane and mixing etc.；Mixed carbon source includes first
Alkane and methanol, ethylene and methanol etc..
The catalyst is ferrocene, iron chloride, iron sulfide, ferric sulfate, nickel oxalate etc., most preferably ferrocene or acetic acid
Cobalt.The catalyst accounts for reactant quality percentage 0.01~15%.
The promotor is water, thiophene, acetic acid molybdenum etc..The dosage of promotor is the 0.01-10% of reactant quality.
The reaction gas flow is 2000~8000 milliliters per minute.
The temperature of reactor is 1000~1700 DEG C.
10~100 milliliters per hour of the hydrocarbon object charge velocity.
In some embodiments, the membranaceous electrothermal structure also may include being incorporated into the composition porous structure at least
At least one layer of graphene or the coat of metal of part carbon nano tube surface.By in carbon nano tube surface composite graphite alkene or gold
Belong to, can also further promote the electric conductivity of the membranaceous electrothermal structure.
Wherein, the graphene can be chemically bonded or the mode of physical absorption is incorporated into the carbon nanotube table
Face, and can be single-layer or multi-layer.The chemical bonding mode can pass through the methods of plasma treatment or high-temperature heat treatment
It realizes.The physical absorption can be realized by the methods of immersion, spraying or brushing.
The coat of metal can be incorporated into the carbon nano tube surface by modes such as plating, chemical platings.
The graphene can be graphene oxide, redox graphene, single layer or graphene microchip of few layer etc.,
Thickness is preferably 1 μm -3 μm.
The material of the coat of metal can be nickel, nichrome etc., and thickness is preferably 0.1 μm~5 μm.
In the present invention, the infrared wave that the membranaceous electrothermal structure based on previous designs gives off under energized state is a length of
3 μm~25 μm, and wherein the wavelength of 90% or more infrared ray is 3 μm~16 μm, belongs to the light for the life that human body easily absorbs
Region can be used as ideal IR emitting heating element, therefore have more preferably healthcare function.Also, the membranaceous electric heating knot
Structure is resistant to 500 DEG C of high temperature, and flame retardant property can reach UL-94 standard V-0 rank.
In the present invention, the membranaceous electrothermal structure based on previous designs can be 25V safety low-voltage below in voltage
Driving is lower and is rapidly reached 100 DEG C of design temperatures (design temperature is relevant with heating area) below, and its heating rate
It is exceedingly fast, can reach set temperature at 1~2 second；It is described membranaceous with the increase of heating time within the temperature range of 100 DEG C
The resistance value of electrothermal structure remains unchanged, and has excellent electric stability.
In some embodiments, the two-dimensional nano carbon heating body may include two or more aforementioned membranaceous electric heating
Structure, according to the demand of practical application, these membranaceous electrothermal structures can be arranged side by side or be stacked, and be also possible to part friendship
Folded set-up mode.For example, multiple membranaceous electrothermal structures can be stacked when needing higher heating power.Postscript,
There is anisotropic conductive attribute in view of aforementioned membranaceous electrothermal structure single layer, these membranaceous electrothermal structure intersections can also be set
It sets.It is being different from for example, setting one of them conductivity of membranaceous electrothermal structure in a first direction greater than the membranaceous electrothermal structure
Conductivity on remaining direction of the first direction, another conductivity of membranaceous electrothermal structure in a second direction is greater than should
Conductivity of the membranaceous electrothermal structure on remaining direction for being different from the second direction, then can be by this two membranaceous electric heating knots
Structure is staggered, and makes between the first direction and the second direction into the angle greater than 0 ° and less than 180 °.
Wherein, the overlapping number of plies of aforementioned membranaceous electrothermal structure and overlapping intersecting angle will determine the two-dimensional nano carbon fever
The electric conductivity and impedance of body, and then influence its heating power.
Postscript, the flexible electrode are for driving the membranaceous electrothermal structure as heating layer.
Preferably, the flexible electrode selects the one or more flexible height close by electric conductivity and conductive metal material
Conductive material is made, so as to the connection of itself and the membranaceous electrothermal structure and power supply line.
The flexible electrode can be one-dimensional or Two-dimensional morphology, for example, one-dimensional flexible electrode can be flexible wire, two
The flexible electrode of dimension can be compliant conductive cloth or flexible conductive film etc., it is preferred to use the latter.For example, applicable compliant conductive cloth
Or the thickness of flexible conductive film is preferably 10~30 μm, square resistance is less than 20m Ω/.
For the membranaceous electrothermal structure of large area, for the benefit of its efficient operation, can use multiple flexible electricals
Pole and the membranaceous electrothermal structure cooperate, for example, can be using plural number to flexible electrode, each pair of flexible electrode includes one first soft
Property electrode and one second flexible electrode, first flexible electrode and second flexible electrode are arranged along the direction initialization interval,
And with the membranaceous electrothermal structure secure bond.The plural number to flexible electrode can alternate intervals be set to the membranaceous electrothermal structure
Outer peripheral edge portion.
The flexible electrode can be by electrically conducting adhesive in conjunction with the membranaceous electrothermal structure, or can also pass through seam
The modes such as conjunction combine.In some embodiments, the flexible electrode can also be by the regional area of the membranaceous electrothermal structure, example
If some regions of its peripheral part are directly formed, in other words, the flexible electrode can integrally be set with the membranaceous electrothermal structure
It sets.
Further, for the benefit of described membranaceous electrothermal structure is connect with low-tension supply, can also by the flexible electrode with it is soft
Property power supply line is connected by the modes such as being adhesively fixed.It is multiple less than 1 Ω/m metallization that the flexible power conductor can be selected from resistance value
Condensating fiber or conducting wire etc., such as silver-plated carbon nano-tube fibre, nickel-coated carbon fibers, copper carbon fiber, silver-plated carbon fiber, silver-plated aramid fiber
Fiber, silver-plated polyester fiber etc., preferably nickel-coated carbon fibers.
The second embodiment of the present invention additionally provides a kind of flexible electrical heating module, is mainly based upon two wiener above-mentioned
Rice carbon heating body building.
In some embodiments, a kind of flexible electrical heating module may include:
Nanometer heating layer, comprising the two-dimensional nano carbon heating body,
And it is directly combined to two flexible surface layers of the opposite both side surface of the nanometer heating layer；
Wherein at least one flexible surface layer is heat carrier and can make two-dimensional nano carbon heating body production when work
Raw heat radiation penetrates, and the temperature that two flexible surface layers are resistant to is above the two-dimensional nano carbon heating body with most
The temperature generated when big operating power work.
In some embodiments, the two-dimensional nano carbon heating body is covered completely by described two flexible surface layers, and
And the flexible electrode by being pierced by from the flexible surface layer and/or flexible power conductor are electrically connected with peripheral hardware low-tension supply.Such as
The problems such as this can avoid two-dimensional nano carbon heating body due to exposure and may be damaged or endanger user's health, and promoted
The comfort of user.
Wherein, the flexible surface layer can be by modes such as bondings in conjunction with the two-dimensional nano carbon heating body, but glue
Connect the introducing of material, may physics on the two-dimensional nano-carbon material, chemical property impact that (such as to influence it ventilative
Property weakens its thermal radiation capability and conductivity etc.), and these adhesives generally can not be resistant to high temperature, most probably described
Two-dimensional nano carbon heating body influences the safety in utilization of the flexible electrical heating module to melt or decompose when high power work.
Therefore, more preferably, the membranaceous electrothermal structure can be directly fitted with flexible surface layer in the present invention, because of the film
The features such as shape electrothermal structure large specific surface area, the membranaceous electrothermal structure and flexible surface layer can be made by Van der Waals force, π-π
With the relatively firm combination of equal physical actions.Further, after the membranaceous electrothermal structure is bonded with flexible surface layer, may be used also
Its combination is pressed together, to further promote the two-dimensional nano carbon heating body and the combination jail of flexible surface layer
Solidity meets the needs of as wearable device application with ideal resistant to bending, rub resistance energy.
In some embodiments, the capacity of heat transmission of a flexible surface layer in two flexible surface layers is weaker than another
A flexible surface layer, so that the heat for generating the two-dimensional nano carbon heating body and heat radiation are passed to a direction initialization
It leads, and avoids heat and heat radiation from the direction initialization is deviated from, be especially lost opposite to each other in remaining direction of the direction initialization,
To obtain more preferably heating effect.
For example, in some more specifically embodiments, referring to Fig. 3, the flexible electrical heating module is included
In two flexible surface layers, a flexible surface layer includes flexible water air-permeable layer 11 and flexible insulating layer, another flexible table
Surface layer includes flexible water air-permeable layer, flexible insulating layer 13 and flexible insulating 12；
In two flexible surface layers, the flexible water air-permeable layer is distributed in 10 He of nanometer heating layer
Between flexible insulating layer；
In another described flexible surface layer, the flexibility insulating is distributed in the flexible water air-permeable layer
Between flexible insulating layer.
Alternatively, referring to Fig. 4, the flexibility insulating is covered in other more specific embodiment
On the flexible insulating layer.
Wherein, the thickness of the nanometer heating layer is preferably 3~50 μm.
Wherein, using the flexible water air-permeable layer, water etc. can be obstructed and enter the two-dimensional nano carbon heating body, and protected
Hinder the normal work of the two-dimensional nano carbon heating body, and does not influence the gas permeability of the flexible electrical heating module.The flexibility
Waterproof ventilative layer any suitable type known to the industry, such as can be PES film, polytetrafluoroethylene film etc.
Any one or more, especially preferably from microporous teflon membran, thickness is preferably 20 μm~60 μm.
Wherein, using the flexible insulating layer, can further ensure the two-dimensional nano carbon heating body using safe
Property, equally can be selected from suitable type known in the art, for example, can be the clothes such as non-woven fabrics, looped fabric, woven fabric and silica gel,
Any one or more in the flexible inorganics such as polyimide polyester or organic material, be especially selected from wherein have it is good ventilative
The type of property, thickness is preferably 0.1~0.2mm.
Wherein, using the flexible heat-insulating thermal insulation layer, the two-dimensional nano carbon heating body can effectively be obstructed when work
The heat of generation and the meaningless loss of heat radiation promote efficiency of energy utilization, equally can be selected from suitable class known in the art
Type, but it is more preferred, the aerogel material with good heat preservation and insulation and fine air permeability may be selected, especially
Nanoporous aerogel heat preserving and insulating material, including silica type, graphite alkenes, sulphur class or metal oxide-type any one or it is more
Kind.The flexible heat-insulating thermal insulation layer can be the coating etc. formed by modes such as spraying, brushing or roller coating, and thickness is preferred
For 0.3~1.0mm.
Among some highly preferred embodiments, the flexible electrical heating module with a thickness of 0.543~1.57mm.
The third embodiment of the present invention additionally provides a kind of method for preparing the flexible electrical heating module, may include
Following steps:
(1) membranaceous electrothermal structure described in offer at least one, and at least one membranaceous electrothermal structure is cut to required ruler
Very little and shape；
(2) flexible electrode described in offer at least two, and by least two flexible electrode along the direction initialization
Interval setting, and it is electrically connected at least two flexible electrode with the membranaceous electrothermal structure, to constitute the two dimension
Nanometer carbon heating body；
(3) using the two-dimensional nano carbon heating body as nanometer heating layer, and two flexible surface layers are straight
Connect the opposite both side surface for being fitted in the nanometer heating layer.
More preferred, the method further includes to by the nanometer heating layer and two flexible surface layer's shapes
At interlayer structure suppressed and the operation that keeps the triplicity integral.The pressure wherein used and pressing time are can promote
Make the triplicity above-mentioned, is advisable without influencing the wherein inherent structure of two-dimensional nano carbon heating body and form, such as preferably
Being controlled in temperature is 70~85 DEG C, and pressure is 8~15MPa, and pressing time is 1~5min.
In short, two-dimensional nano carbon heating body and flexible electrical heating module of the invention not only has very good mechanical properties, height
Electric conductivity, superior anti-corrosion performance, rub resistance energy and wide spectrum infrared heating performance etc., and have and stablize electric heating property
With high electric conversion efficiency and low power consumption efficiency, it is particularly suitable for use as flexible wearable formula heating clothes and health care is set
Standby application.
It should be appreciated that disclosed is the one or more of preferred embodiment, all local change or modification
And be to be familiar with the people of this technology to be easy to deduce derived from technical idea of the invention, patent right of the invention is not departed from all
Range.
Claims (18)
1. a kind of two-dimensional nano carbon heating body, characterized by comprising:
One membranaceous electrothermal structure, the membranaceous electrothermal structure include the porous knot being mainly made of multilayer two-dimension carbon nano tube network
Structure, the aperture of the membranaceous electrothermal structure contained hole are 10~100nm, porosity 30% or more, and with it is described membranaceous
In the corresponding plane of electrothermal structure, the conductivity of the membranaceous electrothermal structure in a selected direction is greater than the membranaceous electric heating knot
Conductivity of the structure on remaining direction for being different from the preferential direction, while the membranaceous electrothermal structure is in the preferential direction
On conductivity 1.0 × 104S/m or more, for tensile strength in 80MPa or more, surface density is 3~15g/m2, with a thickness of 3~50 μ
M, a length of 3 μm~25 μm of the infrared wave given off in the energized state, and also wherein the wavelength of 90% or more infrared ray is 3
μm~16 μm；
At least two flexible electrodes, at least two flexible electrode are arranged along the preferential direction interval, and with it is described membranaceous
Electrothermal structure electrical connection.
2. two-dimensional nano carbon heating body according to claim 1, it is characterised in that: the membranaceous electrothermal structure also includes knot
Together in at least one layer of graphene or the coat of metal of at least partly carbon nano tube surface for forming the porous structure.
3. two-dimensional nano carbon heating body according to claim 2, it is characterised in that: graphene in the membranaceous electrothermal structure
Layer or the coat of metal with a thickness of 0.1 μm -5 μm.
4. two-dimensional nano carbon heating body according to claim 2, it is characterised in that: the coat of metal is made of nickel.
5. two-dimensional nano carbon heating body according to claim 1, it is characterised in that: the two-dimensional nano carbon heating body includes
More than two membranaceous electrothermal structures, the membranaceous electrothermal structure of the two or more are arranged side by side or are stacked.
6. two-dimensional nano carbon heating body according to claim 5, it is characterised in that: one of them membranaceous electrothermal structure is
Conductivity on one direction is greater than conductivity of the membranaceous electrothermal structure on remaining direction for being different from the first direction, separately
The conductivity of one membranaceous electrothermal structure in a second direction is greater than the membranaceous electrothermal structure and is being different from the second direction
Conductivity on remaining direction, and at the angle greater than 0 ° and less than 180 ° between the first direction and the second direction.
7. two-dimensional nano carbon heating body according to claim 1, it is characterised in that: the flexible electrode is selected from compliant conductive
Cloth or flexible conductive film, and with a thickness of 10~30 μm, square resistance is less than 20m Ω/.
8. two-dimensional nano carbon heating body according to claim 1, it is characterised in that: the flexible electrode and flexible power conductor
Electrical connection, the flexible power conductor is selected from metallization composite fibre or conducting wire, and resistance value is less than 1 Ω/m.
9. a kind of flexible electrical heating module, it is characterised in that include:
Nanometer heating layer includes two-dimensional nano carbon heating body of any of claims 1-8,
And it is directly combined to two flexible surface layers of the opposite both side surface of the nanometer heating layer；
Wherein at least one flexible surface layer is heat carrier and the two-dimensional nano carbon heating body can be made to generate when work
Heat radiation penetrates, and the temperature that two flexible surface layers are resistant to is above the two-dimensional nano carbon heating body with maximum work
The temperature that the rate of doing work generates when working；
The nanometer heating layer with a thickness of 3~50 μm.
10. flexible electrical heating module according to claim 9, it is characterised in that: the two-dimensional nano carbon heating body is by institute
It states two flexible surface layers to cover completely, and the flexible electrode by being pierced by from the flexible surface layer and/or flexible electrical
Source line is electrically connected with peripheral hardware low-tension supply.
11. flexible electrical heating module according to claim 9, it is characterised in that:
One of flexible surface layer includes flexible water air-permeable layer and flexible insulating layer, another flexible surface layer includes flexibility
Waterproof ventilative layer, flexible insulating layer and flexible insulating；
In two flexible surface layers, the flexible water air-permeable layer is distributed in the nanometer heating layer and flexibility is exhausted
Between edge layer；
In another described flexible surface layer, the flexibility insulating is covered on the flexible insulating layer or divides
It is distributed between the flexible water air-permeable layer and flexible insulating layer.
12. flexible electrical heating module according to claim 11, it is characterised in that: the flexible surface layer with a thickness of
0.12mm~1.26mm.
13. flexible electrical heating module according to claim 11, it is characterised in that: the thickness of the flexible water air-permeable layer
It is 20 μm~60 μm.
14. flexible electrical heating module according to claim 11, it is characterised in that: the flexible insulating layer with a thickness of
0.1mm~0.2mm.
15. flexible electrical heating module according to claim 11, it is characterised in that: the thickness of the flexibility insulating
For 0.3mm~1.0mm.
16. flexible electrical heating module according to claim 11, it is characterised in that: the thickness of the flexible electrical heating module
For 0.543~1.57mm.
17. a kind of method for preparing flexible electrical heating module described in any one of claim 9-16, characterized by comprising:
One membranaceous electrothermal structure is provided, and the membranaceous electrothermal structure is cut to required size and shape；
At least two flexible electrodes are provided, and by least two flexible electrode along corresponding to the selected of the membranaceous electrothermal structure
The setting of direction interval, and it is electrically connected at least two flexible electrode with the membranaceous electrothermal structure, to constitute two wieners
Rice carbon heating body；
Using the two-dimensional nano carbon heating body as nanometer heating layer, and two flexible surface layers are directly attached to
The opposite both side surface of the nanometer heating layer.
18. according to the method for claim 17, it is characterised in that further include to by the nanometer heating layer and described two
The interlayer structure that a flexible surface layer is formed is suppressed and the operation that keeps the triplicity integral.
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| WO2017084608A1 (en) * | 2015-11-17 | 2017-05-26 | 苏州聚宜工坊信息科技有限公司 | Heating membrane assembly for use in wearable device and a garment |
| CN106060983A (en) * | 2016-06-03 | 2016-10-26 | 苏州捷迪纳米科技有限公司 | Low-voltage driven high-temperature electrothermal film, electric heating module and preparation method of low-voltage driven high-temperature electrothermal film |
| CN107178816A (en) * | 2017-06-29 | 2017-09-19 | 嘉兴市诺金新材料有限公司 | A kind of electric heating electro-heat equipment |
| CN108848586A (en) * | 2017-11-07 | 2018-11-20 | 苏州汉纳材料科技有限公司 | A kind of wearable heating sheet of far-infrared flexible, preparation method and application |
| CN108075138B (en) * | 2017-12-06 | 2020-07-14 | 德华兔宝宝装饰新材股份有限公司 | Graphene/metal composite material modified adhesive impregnated veneer and preparation method thereof |
| CN109688647A (en) * | 2019-03-01 | 2019-04-26 | 无锡远稳烯科技有限公司 | A kind of manufacture craft of graphene carbon nano-tube film electric heating piece |
| CN110565176B (en) * | 2019-06-04 | 2021-06-15 | 中国科学院苏州纳米技术与纳米仿生研究所 | Temperature-adjustable fabric based on carbon nano tube and preparation method thereof |
| CN110324920A (en) * | 2019-06-28 | 2019-10-11 | 乐福之家纳米材料有限责任公司 | A kind of preparation method of thermal-insulating type graphene Electric radiant Heating Film |
| CN111278177B (en) * | 2019-12-13 | 2021-12-21 | 中航复材（北京）科技有限公司 | Preparation method of carbon material electric heating sheet |
| CN112261742A (en) * | 2020-11-11 | 2021-01-22 | 德阳烯碳科技有限公司 | Thick-film resistor paste, alumina ceramic-based heating sheet and preparation method |
| CN114641100B (en) * | 2020-12-15 | 2022-12-13 | 安徽宇航派蒙健康科技股份有限公司 | Method for preparing transparent high-temperature-resistant electric heating device based on self-assembly template-metal deposition method and gaseous carbon source deposition method |
| CN114666927B (en) * | 2022-03-29 | 2023-03-31 | 北京航空航天大学 | Multidirectional stretchable electric heating deicing material and preparation method and application thereof |
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| CN104883756A (en) * | 2015-06-10 | 2015-09-02 | 上海工程技术大学 | Flexible composite electrothermal film |
| CN105208692B (en) * | 2015-10-10 | 2019-03-05 | 苏州聚宜工坊信息科技有限公司 | A kind of flexible membrane module and preparation method thereof that generates heat |
| CN205283846U (en) * | 2015-12-31 | 2016-06-01 | 苏州捷迪纳米科技有限公司 | Two dimension nanometer carbon heat -generating body and flexible electrical heating module |
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