CN105208692A - Flexible heating film assembly and preparing method thereof - Google Patents
Flexible heating film assembly and preparing method thereof Download PDFInfo
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- CN105208692A CN105208692A CN201510651282.6A CN201510651282A CN105208692A CN 105208692 A CN105208692 A CN 105208692A CN 201510651282 A CN201510651282 A CN 201510651282A CN 105208692 A CN105208692 A CN 105208692A
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Abstract
The invention discloses a flexible heating film assembly and a preparing method thereof. The flexible heating film assembly comprises a flexible heating layer. The flexible heating layer is formed by connecting five to one thousand heating film layers in a stacked mode. Loose and porous structures are formed between every two layers. A circuit system is connected to the flexible heating layer. At least one of the upper side and the lower side of the flexible heating layer is provided with a protecting layer. The multiple heating film layers of the flexible heating layer are connected in a stacked mode, the loose and porous structures are formed between every two layers, and by means of unique nanometer holes, the large long-diameter ratio and the large specific area, the flexible heating layer has large elasticity modulus and high bending strength, macroscopic flexibility and hand feeling comfort of the flexible heating film assembly are ensured; in addition, the flexible heating film assembly has ultra-thin thickness and high flexibility, is easy to process and form and resistant to detergent, and is an excellent insulating and heat preserving material.
Description
Technical field
The invention belongs to exothermic material technical field, be specifically related to a kind of flexible heating film assembly and preparation method thereof.
Background technology
Along with growth in the living standard, people need special thermal source in increasing place, as: hot compress medically, the heating of food when going out, warm hand, warm pin, automobile cushion etc. when it is cold.Exothermic material in the market is generally divided into chemistry heating and electricity heating.Chemistry heating Common materials is quick lime, hot ice (SAS), iron powder etc., the chemical reaction heating occurred by these materials.But these materials are chemical article, and reaction is violent, and bad control, temperature is also unstable, easily damages human body, and security situation causes anxiety.
Electric heating products main material commercially available is at present: metal electric heating material, non-metal electrothermal material and carbon fiber electrically hot material.
Metal species thermo electric material mainly comprises noble metal (Pt), high temperature melting point metals (W, Mo, Ta, Nb) and alloy, nickel-base alloy and iron aluminum series alloy.Most widely used metal electric heating material is nichrome and iron aluminum series alloy mainly.But metal material Toughness is poor, easily broken, security performance is not good yet.
Non-metal electrothermal material mainly contains carborundum, Lanthanum Chromite, zirconia, molybdenum disilicide etc.Non-metal electrothermal material has high temperature resistant, corrosion-resistant, anti-oxidant, electric conversion efficiency advantages of higher compared with metal electric heating material, just progressively substituted metal thermo electric material.But non-metal electrothermal material self also exists many shortcomings, such as, use in carbofrax material high temperature oxidative atmosphere, easily cause silicon carbide elements because of oxidation strongly scaling loss, constrain its extensive use in higher temperature field; Though molybdenum disilicide has the dual property of metal and pottery, the shortcoming that Toughness is poor and elevated temperature strength is low also limit its development and application.
Above-mentioned exothermic material is all harder and thick and heavy, can not meet most demand, be such as applied to clothes, the field such as family is spun, household time can not to the comfortable experience of people; Simultaneously current most exothermic material can not wash resistant, and normally can not wash or can only locally wash, this brings limitation also to the application of exothermic material.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to provide a kind of flexible heating film assembly, and this flexible heating film assembly flexibility is good, comfortable feel.
For reaching this object, the present invention by the following technical solutions:
A kind of flexible heating film assembly; comprise flexible heat generating layer; described flexible heat generating layer connects to form by the heating film of 5 ~ 1000 layers is stacked; form loose porous structure between layers; described flexible heat generating layer is connected with Circuits System, in the both sides up and down of described flexible heat generating layer, has at least side to be provided with protective layer.
The stacked connection of multilayer heating film of flexible heat generating layer, form loose porous structure between layers, the nanoaperture of this uniqueness, larger draw ratio and higher specific area make this flexible heat generating layer have fabulous modulus of elasticity and bending strength, thus ensure that the flexible flexibility of heating film assembly macroscopic view and the comfortableness of feel.Wherein, the upside of described flexible heat generating layer or downside or up and down both sides be provided with protective layer simultaneously.In addition, flexible heating film assembly also comprises other functional layers, such as watertight composition, heat-insulation layer, supporting layer etc., and other functional layers described can be located at the outside of described protective layer, also can be located between described flexible heat generating layer and described protective layer, do not repeat them here.
Wherein, the connected mode between the heating film of the multilayer of described flexible heat generating layer is one in chemical bond, Van der Waals force, hydrogen bond, bonding, hot pressing or at least two kinds; Preferably, when the described heating film number of plies is 5 ~ 10 layers, the connected mode between every layer of heating film is bonding and/or hot pressing; Preferably, when the described heating film number of plies is 11 ~ 1000 layers, the connected mode between every layer of heating film is one in chemical bond, Van der Waals force, hydrogen bond or at least two kinds; Preferably, the material of preparing of described heating film is one in carbon fiber, single armed carbon nano-tube, multi-arm carbon nano-tube, graphite, Graphene, graphene oxide, sulfonated graphene, fullerene or at least two kinds; The thickness of flexible heat generating layer realizes by the number of plies regulating and controlling heating film, and the thickness of described flexible heat generating layer is 100nm ~ 100 μm.
Wherein, described flexible heat generating layer also comprises conductive materials, and described conductive materials is doped in the described heating film of every layer, preferably, described conductive materials is one in metallic particles, metallic fiber, nano wire, conducting polymer, nonmetallic materials or at least two kinds, preferably, described metallic particles is iron particle, copper particle, nickel particle, one in Argent grain or at least two kinds, described metallic fiber is iron fiber, copper fiber, nickel fiber, silver fiber in one or at least two kinds, described nano wire is nickel nano wire, Pt nanowires, nanowires of gold, one in nano silver wire or at least two kinds, described conducting polymer is polythiophene, polypyrrole, polyparaphenylene, polyphenylene sulfide, polyaniline, one in the polyacetylene of I2 doping process or at least two kinds, described nonmetallic materials are carborundum, Lanthanum Chromite, zirconia, one in molybdenum disilicide or at least two kinds, flexible heat generating layer can make flexible heat generating layer have good conductivity by conductive doped material, the abilities such as fast transfer electronics, and ensure that the globality that volume generates heat, heating effect is better than the surface heat of common coating.
Wherein, described protective layer has reticulated macroporous structure; described reticulated macroporous structure comprises the node of hole between fibre bundle, fibre bundle junction; described reticulated macroporous structure forms one in netted connection, thimble hole, bending duct or at least two kinds in three-dimensional structure; thus form a kind of pliable and tough and whippy poromerics; porosity is high, even aperture distribution, has the characteristic of permeable watertight.Further; protective layer has special reticulated macroporous structure; the contact angle between itself and water droplet is made to be greater than 150 °; thus there is super-hydrophobic effect; hydrone effectively can be stoped the destruction of flexible heat generating layer, not only can realize the Waterproof Breathable of flexible heating film assembly but also the water-wash resistance of flexible heating film assembly can be ensured.
Protective layer has thermal insulating, Waterproof Breathable and defencive function and excellent water-wash resistance; Preferably, described protective layer be polytetrafluoroethylporous porous membrane, polyimide film, polyethylene film, polychloroethylene film, PVDF membrane, polyester film, polypropylene film, polystyrene film, poly-one of joining in film, organosilan dielectric film, organosiloxane dielectric film, polyamide, epoxy resin, asbestos, natural rubber, synthetic rubber, ABS film, PU film, TPU membrane, TPE film or at least two kinds.
Preferably, the thickness of described protective layer is 5 ~ 20 μm, such as 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, 16 μm, 17 μm, 18 μm, 19 μm, 20 μm.
Wherein, described Circuits System is included in the electrode that described flexible heat generating layer is arranged; Preferably, the material of described electrode is the one in metal forming, conductive rubber, conductive fabric, conductive tape; Described electrode can for being fixed on the band electrode on described flexible heat generating layer by conductive tape, also can for being plated on the metallic particles of the bar shaped on described flexible heat generating layer, can also for being printed in the metal slurries of the strip on described flexible heat generating layer.
Wherein, described Circuits System also comprises function i ntegration module and sheet wire, and described function i ntegration module is connected with described electrode by described sheet wire;
Preferably, described sheet wire is flexible sheet-form wire, and the inner layer material of described flexible sheet-form wire is the flexible filamentary material of conduction, and the cladding material of described flexible sheet-form wire is the flexible material of insulation; Fix the sheet wire of external softness on the both sides of flexible heat generating layer, the sheet wire of described softness is the wire for custom-made, its inner layer material be wire, enamelled wire, carbon fiber etc. that wire-conducting performance is good all can be used as the traditional thread binding material of flexibility of conduction; Its cladding material is the soft good soft material of all insulation such as insulation cloth, silica gel, TPFE, TPU, PVC, TPE, acrylic fibers.
Circuits System is by Power supply, and by being connected with power supply with USB interface by wire, power supply is direct current or AC power; Power supply be external power supply, chargeable lithium cell, USB input in one or at least two kinds.
Wherein, also temperature sensor is provided with between described function i ntegration module and described power supply, between described temperature sensor with described function i ntegration module, be all connected by sheet wire between described temperature sensor with described power supply, Circuits System temperature regulation mechanism be manual adjustments, wireless remote control regulate and mobile phone A PP regulate in one or at least two kinds, can realize anywhere or anytime temperature control.
Preferably, described function i ntegration module comprises temperature sensor and current sensor; The temperature of flexible heat generating layer described in described temperature sensor monitors, when temperature exceedes limiting temperature, described temperature sensor disconnects and cutting off the electricity supply, and when temperature connects lower than temperature sensor described during described limiting temperature and switches on power, ensure that fail safe.Described current sensor detects the electric current of described flexible heat generating layer, and when electric current exceedes current limit, described temperature sensor disconnects and cutting off the electricity supply; Preferably, described limiting temperature is 40 DEG C ~ 60 DEG C, such as, when limiting temperature is 40 DEG C, and when the temperature with temperature sensor contact-making surface is higher than 40 DEG C, temperature sensor disconnects cuts off the electricity supply; When the temperature with temperature sensor contact-making surface is lower than 40 DEG C, temperature sensor connects and the startup heating that switches on power.Heating-up time after described flexible heat generating layer energising is less than 10s, electric conversion rate more than 90%.
Can design according to demand, the function of function i ntegration module is the function etc. of wireless blue tooth function, wireless phone APP function, frequency conversion control temperature; Function i ntegration module can also introduce other functions according to demand, such as health monitoring, temperature curve etc., and this function i ntegration module can constantly introduce other functions with the upgrading of product in addition.
Two of object of the present invention is the preparation method providing a kind of flexible heating film assembly; comprise the steps:: by 5 ~ 1000 layers of stacked connection of heating film; form loose porous structure between layers; prepare flexible heat generating layer; described flexible heat generating layer arranges Circuits System; to at least side composite protection layer in the both sides up and down of the described flexible heat generating layer of described Circuits System be provided with, after pruning edge sealing, prepare flexible heating film assembly.
According to demand the heating film of the required number of plies is successively attached to together, when the number of plies is at 5 ~ 10 layers, being connected by physics mode between layers of heating film, when the number of plies is 11 ~ 1000 layers, being connected with the mode of hydrogen bond by chemical bond, Van der Waals force between layers of heating film.Be arranged at the electrode of the Circuits System on flexible heat generating layer, can be by the fixing band electrode of conductive tape, also can be the gold, silver of plating on flexible heat generating layer or copper particle, can also starch or other metal slurries for the gold, silver be printed on flexible heat generating layer.Draw sheet wire in one end of electrode and be used for external power supply, described sheet wire is special flexible sheet-form wire, can arbitrarily bend, and can wash.At at least side composite protection layer of the both sides up and down of flexible heat generating layer, described complex method can be the modes such as pressurization, hot pressing, double faced adhesive tape, stitching, then prepares flexible heating film assembly after carrying out pruning edge sealing.
Compared with prior art, beneficial effect of the present invention is: flexible heating film assembly of the present invention, comprise flexible heat generating layer, described flexible heat generating layer connects to form by the heating film of 5 ~ 1000 layers is stacked, form loose porous structure between layers, flexible heat generating layer is connected with Circuits System, in the both sides up and down of flexible heat generating layer, has at least side to be provided with protective layer; The stacked connection of multilayer heating film of flexible heat generating layer, form loose porous structure between layers, the nanoaperture of this uniqueness, larger draw ratio and higher specific area make this flexible heat generating layer have fabulous modulus of elasticity and bending strength, thus ensure that the flexible flexibility of heating film assembly macroscopic view and the comfortableness of feel.
The material of preparing of the heating film in flexible heating film assembly of the present invention also comprises conductive materials, and conductive materials is doped on the heating film of every layer; Flexible heat generating layer can be made to have the ability such as good conductivity, fast transfer electronics by conductive doped material, and ensure that the globality that volume generates heat, heating effect is better than the surface heat of common coating.The electrode that flexible heat generating layer is arranged, also ensure that the uniformity that flexible heating film assembly generates heat.
Protective layer has reticulated macroporous structure; reticulated macroporous structure comprises the node of hole between fibre bundle, fibre bundle junction; reticulated macroporous structure forms netted connection, thimble hole, bending duct in three-dimensional structure; thus form a kind of pliable and tough and whippy poromerics; porosity is high; even aperture distribution, has the characteristic of permeable watertight.Further; protective layer has special reticulated macroporous structure; the contact angle between itself and water droplet is made to be greater than 150 °; thus there is super-hydrophobic effect; hydrone effectively can be stoped the destruction of flexible heat generating layer, not only can realize the Waterproof Breathable of flexible heating film assembly but also the water-wash resistance of flexible heating film assembly can be ensured.
Flexible heating film assembly of the present invention has ultrathin, can be carried out the thickness of controlling diaphragm assembly, be easy to machine-shaping according to different demand by the number of plies adjusting basic heating layer.In addition, the preparation method of flexible heating film assembly of the present invention is simple and easy to operate, is convenient to promote.
Accompanying drawing explanation
Fig. 1 is the structural representation one of flexible heating film assembly of the present invention;
Fig. 2 is the reticulated macroporous structural representation of the protective layer of flexible heating film assembly of the present invention;
Fig. 3 is the structural representation two of flexible heating film assembly of the present invention;
Fig. 4 is the structural representation of first preference of flexible heating film assembly of the present invention;
Fig. 5 is the structural representation of second preference of flexible heating film assembly of the present invention;
Fig. 6 is the structural representation of the 3rd preference of flexible heating film assembly of the present invention;
Fig. 7 is the structural representation of the 4th preference of flexible heating film assembly of the present invention;
Fig. 8 is the schematic diagram of the temperature measurement location of flexible heating film assembly of the present invention;
Fig. 9 is the Infrared Thermogram after flexible heating film assembly energising of the present invention.
Reference numeral is as follows:
1-flexible heat generating layer; 2-protective layer; 21-waterproof ventilative layer; 22-fabric; 23-supporting layer; 24-warming layer; 3-Circuits System; 4-electrode; 41-band electrode; 42-insulating barrier; 5-function i ntegration module; 6-sheet wire; 7-power supply; 8-temperature sensor.
Embodiment
Technical scheme of the present invention is further illustrated below by the drawings and specific embodiments.
As no specific instructions, various raw material of the present invention all can commercially availablely be buied, or prepares according to the conventional method of this area.
As shown in Figure 1; flexible heating film assembly comprises flexible heat generating layer 1, and flexible heat generating layer 1 is formed by connecting by the heating film of 5 ~ 1000 layers is stacked, forms loose porous structure between layers; flexible heat generating layer 1 is connected with Circuits System 3, the both sides up and down of flexible heat generating layer 1 are provided with protective layer 2.The multilayer heating film of flexible heat generating layer 1 is by stacked connection, form loose porous structure between layers, the nanoaperture of this uniqueness, larger draw ratio and higher specific area make this flexible heat generating layer have fabulous modulus of elasticity and bending strength, thus ensure that the flexible flexibility of heating film assembly macroscopic view and the comfortableness of feel.As preferred scheme, be also doped with conductive materials in the heating film in flexible heating film assembly, conductive materials is doped in the heating film of every layer; Flexible heat generating layer can be made to have the ability such as good conductivity, fast transfer electronics by conductive doped material, and ensure that the globality that volume generates heat, heating effect is better than the surface heat of common coating.
Flexible heating film assembly also comprises other functional layers, and such as watertight composition, heat-insulation layer, supporting layer etc., wherein, other functional layers can be located at the outside of protective layer 2, also can be located between flexible heat generating layer 1 and protective layer 2.
As shown in Figure 2; the reticulated macroporous structure of protective layer; reticulated macroporous structure comprises the node of hole between fibre bundle and fibre bundle junction; reticulated macroporous structure forms netted connection, thimble hole, bending duct in three-dimensional structure; thus form a kind of pliable and tough and whippy poromerics; porosity is high, even aperture distribution, has the characteristic of permeable watertight.Further; protective layer has special reticulated macroporous structure; the contact angle between itself and water droplet is made to be greater than 150 °; thus there is super-hydrophobic effect; hydrone effectively can be stoped the destruction of flexible heat generating layer, not only can realize the Waterproof Breathable of flexible heating film assembly but also the water-wash resistance of flexible heating film assembly can be ensured.
As shown in Figure 3, Circuits System 3 is included in the electrode 4 that flexible heat generating layer 1 is arranged, Circuits System 3 also comprises function i ntegration module 5 and sheet wire 6, function i ntegration module 5 is connected with electrode 4 by sheet wire 6, Circuits System 3 is connected with power supply 7 by sheet wire 6, also be provided with temperature sensor 8 between function i ntegration module 5 and power supply 7, be all connected by sheet wire 6 between temperature sensor 8 with function i ntegration module 5, between temperature sensor 8 with power supply 7.Wherein, sheet wire 6 of the present invention is special flexible sheet-form wire, arbitrarily can bend, can wash.Function i ntegration module 5 is connected with electrode 4 by sheet wire 6, can realize the difference in functionality of flexible heating film assembly, and function i ntegration module 5 can constantly introduce other functions according to different demands with the upgrading of product.Circuits System 3 is connected with power supply 7 by sheet wire 6, is powered by power supply 7, and temperature sensor 8 can realize temperature anywhere or anytime and control.
As shown in Figure 4; as first preference of flexible heating film assembly of the present invention; the material of flexible heat generating layer 1 is carbon nano-tube film; wherein also be doped with nano silver wire; protective layer 2 is made up of waterproof ventilative layer 21 and fabric 22; Circuits System 3 is made up of electrode 4, function i ntegration module 5 and sheet wire 6; a wherein electrode of electrode 4; it can be positive pole; also can be negative pole, with just very routine, positive pole be made up of band electrode 41 and the insulating barrier 42 be coated in band electrode 41; wherein, insulating barrier is polytetrafluoroethylene (PTFE) perforated membrane.The folding this structure be coated in band electrode 41 of insulating barrier 42, flows directly into negative pole along nearest distance after can preventing electric current one from entering positive pole, the heating of membrane module therefore can be avoided uneven.This design makes electric current along whole membrane flow, thus ensures the uniformity of heating; Design can be imported and exported again at same position simultaneously, avoid wiring on film and affect the pliability of whole film, thus making the experience sense of film more comfortable.
As shown in Figure 5, as second preference of flexible heating film assembly of the present invention, the material of the heating film of flexible heat generating layer 1 is carbon nano-tube film, wherein also be doped with nickel fiber, protective layer 2 is by waterproof ventilative layer 21, supporting layer 23 and warming layer 24 form, Circuits System 3 is by electrode 4, function i ntegration module 5 and sheet wire 6 form, wherein electrode 4 is for being applied to the left side of carbon nano-tube film, middle part, the three bullion slurries on right side, the silver on left side and right side starches the both positive and negative polarity as electrode, middle part also applies a bullion slurry, this structure can ensure the flow direction of electric current, film is generated heat evenly.Function i ntegration module 5 is the function of frequency conversion control temperature, adds the practicality of flexible heating film assembly.
As shown in Figure 6; as the 3rd preference of flexible heating film assembly of the present invention; the material of the heating film of flexible heat generating layer 1 is graphene film; wherein also be doped with copper particle; protective layer 2 is made up of waterproof ventilative layer 21, fabric 22, and Circuits System 3 is made up of electrode 4, function i ntegration module 5 and sheet wire 6, and function i ntegration module 5 is arranged at and is convenient to cutting near the ground of a lateral electrode; sheet wire 6 is circumscribed with power supply 7, and power supply 7 is connected with sheet wire 6 by USB interface.On graphene film, sheared-off part membrane material forms the shape of hollow out, the graphene film of this shape make heating evenly, and also save membrane material.
As shown in Figure 7; as the 4th preference of flexible heating film assembly of the present invention; the material of the heating film of flexible heat generating layer 1 is graphene film; wherein also be doped with polyaniline conductive polymer; protective layer 2 is made up of waterproof ventilative layer 21, fabric 22; Circuits System 3 is made up of electrode, function i ntegration module 5 and sheet wire 6, and sheet wire 6 is circumscribed with power supply 7.Wherein, the dielectric film by oblique between two electrodes is connected, and function i ntegration module 5 is arranged at the place near a lateral electrode, make sheet wire 6 can be arranged near an electrode, make the external tapping of flexible heating film close to each other, facilitate cutting, the membrane material produced is more attractive in appearance.
Embodiment 1
Intercept the flexible heating film assembly of 10*10cm size, compound is carried out according to structure as shown in Figure 4, be followed successively by polytetrafluoroethylporous porous membrane (5 μm) from top to bottom, with the carbon nano-tube film (5 μm) of Circuits System, polytetrafluoroethylporous porous membrane (5 μm).The temperature sensor of series connection 40 DEG C in circuit, but namely temperature stops heating more than 40 DEG C, and temperature then starts heating lower than 40 DEG C.The form of circuit by USB external charge treasured be energized, measure the temperature of difference on film with temperature-measuring gun, as shown in Figure 8, measurement result is in table 1 for test position.
Embodiment 2
Intercept the flexible heating film assembly of 10*10cm size, compound is carried out according to structure as shown in Figure 5, be followed successively by polytetrafluoroethylporous porous membrane (5 μm) from top to bottom, with the carbon nano-tube film (5 μm) of Circuits System, polytetrafluoroethylporous porous membrane (5 μm).The temperature sensor of series connection 40 DEG C in circuit, but namely temperature stops heating more than 40 DEG C, and temperature then starts heating lower than 40 DEG C.The form of circuit by USB external charge treasured be energized, measure the temperature of difference on film with temperature-measuring gun, as shown in Figure 8, measurement result is in table 1 for test position.
Embodiment 3
Intercept the flexible heating film assembly of 30*30cm size, compound is carried out according to structure as shown in Figure 4, be followed successively by polytetrafluoroethylporous porous membrane (5 μm) from top to bottom, with the carbon nano-tube film (5 μm) of Circuits System, polytetrafluoroethylporous porous membrane (5 μm).The temperature sensor of series connection 40 DEG C in circuit, but namely temperature stops heating more than 40 DEG C, and temperature then starts heating lower than 40 DEG C.By circuit by the external galvanic form energising of wire, output voltage control is at 5V, and measure the temperature of difference on film with temperature-measuring gun, as shown in Figure 8, measurement result is in table 1 for test position.
Embodiment 4
Intercept the flexible heating film assembly of 30*30cm size, compound is carried out according to structure as shown in Figure 5, be followed successively by polyimide film (5 μm) from top to bottom, with the carbon nano-tube film (5 μm) of Circuits System, polyimide film (5 μm).The temperature sensor of series connection 40 DEG C in circuit, but namely temperature stops heating more than 40 DEG C, and temperature then starts heating lower than 40 DEG C.The form of circuit by USB external charge treasured be energized, measure the temperature of difference on film with temperature-measuring gun, as shown in Figure 8, by the Infrared Thermogram after flexible heating film assembly energising as Fig. 9, measurement result is in table 1 for test position.
Table 1
Composition graphs 8, numbering 123,456 and 789 is respectively 9 points of the upper, middle and lower of the flexible heating film assembly of 30*30cm size, closely, draw whole film heating thus evenly, heating efficiency is high for temperature as can be seen from Table 1 between numbering 123,456,789.Fig. 9 is the Infrared Thermogram after flexible heating film assembly energising of the present invention, and as can be seen from Figure 9, the heating part display of heating film is red, and the RED sector depth is consistent relatively more even, also further illustrates uniformity and the high efficiency of heating film.
Above embodiment is only used for method detailed of the present invention is described, the present invention is not limited to above-mentioned method detailed, does not namely mean that the present invention must rely on above-mentioned method detailed and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of auxiliary element, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (10)
1. a flexible heating film assembly; it is characterized in that; described flexible heating film assembly comprises flexible heat generating layer (1); described flexible heat generating layer (1) connects to form by the heating film of 5 ~ 1000 layers is stacked; form loose porous structure between layers; described flexible heat generating layer (1) is connected with Circuits System (3), in the both sides up and down of described flexible heat generating layer (1), has at least side to be provided with protective layer (2).
2. the flexible heating film assembly of one according to claim 1, is characterized in that, the connected mode between layers of described heating film is one in chemical bond, Van der Waals force, hydrogen bond, bonding, hot pressing or at least two kinds;
Preferably, when the number of plies of described heating film is 5 ~ 10 layers, the connected mode between every layer of heating film is bonding and/or hot pressing;
Preferably, when the number of plies of described heating film is 11 ~ 1000 layers, the connected mode between every layer of heating film is one in chemical bond, Van der Waals force, hydrogen bond or at least two kinds;
Preferably, the material of preparing of described heating film is one in carbon fiber, single armed carbon nano-tube, multi-arm carbon nano-tube, graphite, Graphene, graphene oxide, sulfonated graphene, fullerene or at least two kinds.
3. the flexible heating film assembly of one according to claim 2, is characterized in that, the material of preparing of described heating film also comprises conductive materials, and described conductive materials is doped in described heating film;
Preferably, described conductive materials is one in metallic particles, metallic fiber, nano wire, conducting polymer, nonmetallic materials or at least two kinds;
Preferably, described metallic particles is iron particle, copper particle, nickel particle, one in Argent grain or at least two kinds, described metallic fiber is iron fiber, copper fiber, nickel fiber, silver fiber in one or at least two kinds, described nano wire is nickel nano wire, Pt nanowires, nanowires of gold, one in nano silver wire or at least two kinds, described conducting polymer is polythiophene, polypyrrole, polyparaphenylene, polyphenylene sulfide, polyaniline, one in the polyacetylene of I2 doping process or at least two kinds, described nonmetallic materials are carborundum, Lanthanum Chromite, zirconia, one in molybdenum disilicide or at least two kinds.
4. the flexible heating film assembly of one according to claim 1, is characterized in that, the thickness of described flexible heat generating layer (1) is controlled by the number of plies of heating film, is 100nm ~ 100 μm.
5. the flexible heating film assembly of one according to claim 1, it is characterized in that, described protective layer (2) has reticulated macroporous structure, described reticulated macroporous structure comprises the node of hole between fibre bundle, fibre bundle junction, and described reticulated macroporous structure forms one in netted connection, thimble hole, bending duct or at least two kinds in three-dimensional structure;
Preferably, described protective layer (2) be polytetrafluoroethylporous porous membrane, polyimide film, polyethylene film, polychloroethylene film, PVDF membrane, polyester film, polypropylene film, polystyrene film, poly-one of joining in film, organosilan dielectric film, organosiloxane dielectric film, polyamide, epoxy resin, asbestos, natural rubber, synthetic rubber, ABS film, PU film, TPU membrane, TPE film or at least two kinds;
Preferably, the thickness of described protective layer (2) is 5 ~ 20 μm.
6. the flexible heating film assembly of one according to claim 1, is characterized in that, described Circuits System (3) is included in the upper electrode (4) arranged of described flexible heat generating layer (1);
Preferably, the material of described electrode (4) is the one in metal forming, conductive rubber, conductive fabric, conductive tape;
Preferably, described electrode (4) is the band electrode be fixed on by conductive tape on described flexible heat generating layer (1);
Preferably, described electrode (4) is for being plated on the metallic particles of the bar shaped on described flexible heat generating layer (1);
Preferably, described electrode (4) is for being printed in the metal slurries of the strip on described flexible heat generating layer (1).
7. the flexible heating film assembly of one according to claim 6, it is characterized in that, described Circuits System (3) also comprises function i ntegration module (5) and sheet wire (6), and described function i ntegration module (5) is connected with described electrode (4) by described sheet wire (6);
Preferably, described sheet wire (6) is flexible sheet-form wire, and the inner layer material of described flexible sheet-form wire is the flexible filamentary material of conduction, and the cladding material of described flexible sheet-form wire is the flexible material of insulation;
Preferably, the inner layer material of described flexible sheet-form wire is the one in wire, enamelled wire, carbon fiber, and the cladding material of described flexible sheet-form wire is the one in insulation cloth, silica gel, TPFE, TPU, PVC, TPE, acrylic fibers.
8. the flexible heating film assembly of one according to claim 7, it is characterized in that, described Circuits System (3) is connected with power supply (7) by sheet wire (6), and described power supply (7) is direct current or AC power;
Preferably, described power supply (7) be external power supply, chargeable lithium cell, USB input in one or at least two kinds.
9. the flexible heating film assembly of one according to claim 7, it is characterized in that, also be provided with temperature sensor (8) between described function i ntegration module (5) and described power supply (7), between described temperature sensor (8) with described function i ntegration module (5), be all connected by sheet wire (6) between described temperature sensor (8) with described power supply (7);
Preferably, the temperature regulation mechanism of described Circuits System (3) be manual adjustments, wireless remote control regulate and mobile phone A PP regulate in one or at least two kinds;
Preferably, described function i ntegration module (5) comprises temperature sensor and current sensor;
The temperature of flexible heat generating layer (1) described in described temperature sensor monitors, when temperature exceedes limiting temperature, described temperature sensor (8) disconnects and cutting off the electricity supply, when temperature connects lower than temperature sensor (8) described during described limiting temperature and switches on power;
Described current sensor detects the electric current of described flexible heat generating layer (1), and when electric current exceedes current limit, described temperature sensor (8) disconnects and cutting off the electricity supply;
Preferably, described limiting temperature is 40 DEG C ~ 60 DEG C, and the heating-up time after described flexible heat generating layer (1) energising is less than 10s.
10. the preparation method of a flexible heating film assembly according to claim 1; it is characterized in that comprising the steps: 5 ~ 1000 layers of stacked connection of heating film; form loose porous structure between layers; prepare flexible heat generating layer (1); described flexible heat generating layer (1) arranges Circuits System (3); at least side composite protection layer (2) in the both sides up and down of the described flexible heat generating layer (1) of described Circuits System (3) will be provided with, after pruning edge sealing, prepare flexible heating film assembly.
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