CN109348550A - A kind of Electric radiant Heating Film, preparation method and electric heating products - Google Patents
A kind of Electric radiant Heating Film, preparation method and electric heating products Download PDFInfo
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- CN109348550A CN109348550A CN201811292400.9A CN201811292400A CN109348550A CN 109348550 A CN109348550 A CN 109348550A CN 201811292400 A CN201811292400 A CN 201811292400A CN 109348550 A CN109348550 A CN 109348550A
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- electric radiant
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 161
- 238000005485 electric heating Methods 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000011241 protective layer Substances 0.000 claims abstract description 112
- 239000010410 layer Substances 0.000 claims abstract description 100
- 150000001875 compounds Chemical class 0.000 claims abstract description 41
- 229920005989 resin Polymers 0.000 claims abstract description 37
- 239000011347 resin Substances 0.000 claims abstract description 37
- 206010037660 Pyrexia Diseases 0.000 claims abstract description 25
- 239000011231 conductive filler Substances 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 238000007731 hot pressing Methods 0.000 claims description 21
- 230000007704 transition Effects 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
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- 239000004645 polyester resin Substances 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical compound C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 3
- 229920000180 alkyd Polymers 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 3
- 229910003472 fullerene Inorganic materials 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
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- 239000010439 graphite Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- -1 organic siliconresin Chemical compound 0.000 claims description 2
- 229920005749 polyurethane resin Polymers 0.000 claims description 2
- RCHKEJKUUXXBSM-UHFFFAOYSA-N n-benzyl-2-(3-formylindol-1-yl)acetamide Chemical compound C12=CC=CC=C2C(C=O)=CN1CC(=O)NCC1=CC=CC=C1 RCHKEJKUUXXBSM-UHFFFAOYSA-N 0.000 claims 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 239000011889 copper foil Substances 0.000 description 7
- 229920002799 BoPET Polymers 0.000 description 6
- 241000209094 Oryza Species 0.000 description 6
- 235000007164 Oryza sativa Nutrition 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 235000009566 rice Nutrition 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
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- 239000002994 raw material Substances 0.000 description 4
- 102000016751 Fringe-like Human genes 0.000 description 3
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
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- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
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- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000005439 thermosphere Substances 0.000 description 2
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- 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—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/145—Carbon only, e.g. carbon black, graphite
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- 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
Landscapes
- Surface Heating Bodies (AREA)
Abstract
The present invention provides a kind of Electric radiant Heating Film, preparation method and electric heating products, belongs to electrothermal film technology field.Electric radiant Heating Film includes the first protective layer, heating layer and the second protective layer; two busbars are respectively arranged at the both ends of heating layer; heating layer is sandwiched between the first protective layer and the second protective layer; heating layer is made of electrically conductive ink; electrically conductive ink includes low temperature softening resin and conductive filler; wherein, the softening temperature of low temperature softening resin is 70-150 DEG C.Preparation method includes the following steps: that heating layer is made in the surface filming of substrate using electrically conductive ink.It is sandwiched in heating layer between the first protective layer and the second protective layer the two sides that the first protective layer and the second protective layer are compound in heating layer respectively.The gap of the inside of Electric radiant Heating Film made from this preparation method reduces even gapless, and obtained electric heating products fever is more stable.
Description
Technical field
The present invention relates to electrothermal film technology fields, produce in particular to a kind of Electric radiant Heating Film, preparation method and electric heating
Product.
Background technique
People have continuous pursuit to the life of higher quality, with the increasingly raising of people's living standard, not only want
It asks product to be able to satisfy basic function, also requires it more efficient, it is more environmentally friendly, it is more stable and safer.It is inefficient relative to tradition
, pollution, for unsafe burning heating, electric heating have efficiently, environmental protection, the characteristics such as safe, in recent years gradually
It is universal to come.Electric heating product category is very more, and wherein the spreading speed of Electric radiant Heating Film is getting faster.
Conventional Electric radiant Heating Film is broadly divided into three layers: up-protective layer, heating layer and lower protective layer/substrate.Wherein heating layer is main
After printing or be coated with for electrically conductive ink made of solidification.Heating layer both ends are equipped with busbar, and the effect of busbar is connection electricity
Source provides voltage, generally two copper foil tape.Between the heating layer and copper foil tape of traditional product and heating layer and protective layer
Between, there can be gap, make the structural instability of Electric radiant Heating Film.Can still be made by way of increasing composite pressure heating layer and
There are gaps between copper foil tape and between heating layer and protective layer, cannot effectively solve the above problems.
Summary of the invention
The first object of the present invention be to provide a kind of Electric radiant Heating Film, heating layer and the first protective layer and the second protective layer it
Between gap reduce even gapless, generate heat it is more stable.
The second object of the present invention is to provide a kind of preparation method of Electric radiant Heating Film, and preparation method is simple, and operating condition is held
Easily reach, gap inside obtained Electric radiant Heating Film reduces even gapless, and during compound, the first protective layer and the
Two protective layers will not be destroyed, and the service life of heating film is extended.
The third object of the present invention is to provide a kind of electric heating products, including Electric radiant Heating Film, makes the fever of electric heating products more
Stablize, the service life is longer.
Based on above-mentioned first purpose, the present invention adopts the following technical solutions is realized:
A kind of Electric radiant Heating Film, including the first protective layer, heating layer and the second protective layer, heating layer be sandwiched in the first protective layer and
Between second protective layer, heating layer is made of electrically conductive ink, and electrically conductive ink includes low temperature softening resin and conductive filler, wherein
The softening temperature of low temperature softening resin is 70-150 DEG C.
Further, in another embodiment of the present invention, above-mentioned low temperature softening resin include epoxy resin, phenolic resin,
Acrylic resin, alkyd resin, polyurethane resin, polyester resin, organic siliconresin, fluorocarbon resin, vinylite, fiber
One of plain resinoid and polyamide are a variety of.
Further, in another embodiment of the present invention, above-mentioned conductive filler includes graphite, carbon black, carbon nanotube, carbon
Fiber, carbon crystal, graphene and fullerene it is one or more.
Further, in another embodiment of the present invention, above-mentioned Electric radiant Heating Film further includes busbar, and busbar is set to hair
Thermosphere, busbar are sandwiched between the first protective layer and the second protective layer.
Further, in another embodiment of the present invention, above-mentioned heating layer includes hot zone and doab, hot zone
Surface forms doab, and the thickness of doab is 1.01-10 times of the thickness of hot zone.
Further, in another embodiment of the present invention, above-mentioned continuous transition is selected from thickness and linearly increases with in-plane
Thickness is summed it up at least one of curved property increase of in-plane.
Further, in another embodiment of the present invention, above-mentioned continuous transition refers to that the thickness gradient of transitional region is not high
In 100 microns/1000 microns.
Based on above-mentioned second purpose, the present invention adopts the following technical solutions is realized:
A kind of preparation method of above-mentioned Electric radiant Heating Film, includes the following steps:
(1), heating layer is made in the surface filming using electrically conductive ink in substrate；
(2), heating layer is made to be sandwiched in the first guarantor on the two sides that the first protective layer and the second protective layer are compound in heating layer respectively
Between sheath and the second protective layer.
Further, in another embodiment of the present invention, above-mentioned to be complex as hot pressing compound；The compound composite pressure of hot pressing
For 0.2-30MPa；The compound combined temp of hot pressing is 70-150 DEG C.
Based on above-mentioned third purpose, the present invention adopts the following technical solutions is realized:
A kind of electric heating products, including above-mentioned Electric radiant Heating Film.
Compared with prior art, the embodiment of the present invention provide Electric radiant Heating Film beneficial effect include: using heating layer by
Electrically conductive ink containing low temperature softening resin and conductive filler is made, and the heating layer made has one at a lower temperature
Fixed mobility, when the first protective layer and the second protective layer overlay on the two sides of heating layer, the first protective layer and second is protected
Gap between sheath and heating layer reduces even without gap, keeps the fever of Electric radiant Heating Film more stable, due to low temperature softening tree
The softening temperature of rouge will not destroy the knot of the first protective layer and the second protective layer at 70-150 DEG C when heating layer softening
Structure extends the service life of Electric radiant Heating Film.
The beneficial effect of the preparation method for the Electric radiant Heating Film that the embodiment of the present invention provides includes: first to prepare heating layer, is being incited somebody to action
When first protective layer and the second protective layer are compound in the two sides of heating layer respectively, since heating layer is by soft containing low temperature
The electrically conductive ink for changing resin and conductive filler is made, and when compound first protective layer and the second protective layer, heating layer has
Gap between first protective layer and the second protective layer and heating layer can be filled up, make entire heating film by certain mobility
Internal clearance reduce even gapless.And during compound, since low temperature softening resin is soft at a lower temperature
Change, so, in the process of compound first protective layer and the second protective layer, fever laminar flow can be made to fill up inside heating film
Gap, and the structure of the first protective layer and the second protective layer will not be destroyed, be able to extend the service life of heating film.
The beneficial effect for the electric heating products that the embodiment of the present invention provides includes: to be made by electric heating film preparation electric heating products
The fever of electric heating products is more stable, and the service life is longer.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with
Other relevant attached drawings are obtained according to these attached drawings also belongs to protection scope of the present invention.
Fig. 1 is the first diagrammatic cross-section of Electric radiant Heating Film provided by the invention；
Fig. 2 is the second diagrammatic cross-section of Electric radiant Heating Film provided by the invention；
Fig. 3 is the diagrammatic cross-section for the Electric radiant Heating Film that comparative example 1 of the present invention provides.
Icon: the first protective layer of 110-；The second protective layer of 120-；130- heating layer；140- busbar；131- hair
Hot-zone；The doab 132-.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.Therefore, below to the reality of the invention provided in the accompanying drawings
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected reality of the invention
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain item exists
It is defined in one attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
Fig. 1 and Fig. 2 are please referred to, Electric radiant Heating Film includes the first protective layer 110, the second protective layer 120, heating layer 130 and two
Busbar 140.Busbar 140 is set to heating layer 130, and the number of busbar 140 can be adjusted according to the demand of Electric radiant Heating Film
It is whole, power supply is connected by two busbars 140, to be powered to Electric radiant Heating Film, makes electric heating film for heating.
Two busbars 140 are respectively arranged at the both ends of heating layer 130, and busbar 140 can be band made of metal foil
Shape object and by one of dry resulting stripe coating of metal paste or a variety of combinations.Optionally, busbar 140 is copper
One of foil, aluminium foil strip, stainless steel band or a variety of combinations.
Heating layer 130 is sandwiched between the first protective layer 110 and the second protective layer 120, and busbar 140 is sandwiched in the first protection
Between layer 110 and the second protective layer 120, two busbars 140 are sandwiched between the first protective layer 110 and the second protective layer 120,
First protective layer 110 and the second protective layer 120 are separately positioned on the two sides of heating layer 130, for protecting heating layer 130.First
Protective layer 110 and the second protective layer 120 can be commercially available all materials that can be used for protective layer in the market.Such as: it is thin
One of film, plate, fabric, resinous coat or a variety of combinations.
Optionally, the first protective layer 110 and the second protective layer 120 are polyester film, epoxy resin board, insulating resin painting
One of layer or a variety of combinations.Further, the second protective layer 120 can be the base during film forming heating layer 130
Material, be also possible to individual protective film and protective coating one of or multiple combinations.The present embodiment is not to the first protective layer
110 and second the structure of protective layer 120 improve, do not do excessively repeat herein.
Heating layer 130 includes hot zone 131 and two doabs 132.Hot zone 131 and two doabs 132 are sandwiched in
Between first protective layer 110 and the second protective layer 120, the central region of heating layer 130 is hot zone 131, main after being switched on
It is responsible for converting electrical energy into the region of thermal energy.
The both ends of hot zone 131 are respectively set a doab 132, and the surface of hot zone 131 forms doab 132, and one
One busbar 140 is set on a doab 132, and the side of the separate hot zone 131 of each doab 132 is provided with remittance
Groove is flowed, a busbar 140 is embedded in a manifold groove.Two busbars 140 connect extraneous power supply, pass through two
Doab 132 delivers a voltage to the both ends of hot zone 131, is connected to the both ends of hot zone 131 with extraneous power supply, makes to generate heat
Area 131 generates heat.
The thickness of each doab 132 is 1.01-10 times of the thickness of hot zone 131.The sectional area of doab 132
Increase, so, the all-in resistance of doab 132 reduces, then the heating power of doab 132 reduces, and avoids the heating layer of Electric radiant Heating Film
The significant fever in 130 parts, improves the stability of Electric radiant Heating Film, extends the service life of Electric radiant Heating Film.
Optionally, the thickness of each doab 132 is 1.01-6 times of the thickness of hot zone 131, reduces cost, is increased
Add the service efficiency of material.Further, the thickness of each doab 132 is 2-6 times of the thickness of hot zone 131.Into
One step, the thickness of each doab 132 is 2-4 times of the thickness of hot zone 131.
Hot zone 131 is to the equal continuous transition in each doab 132, that is to say, that hot zone 131 is to each doab 132
Gradually thicken.To realize continuous transition, the transitional region of the slow transition of thickness gradient is formd.If two neighboring
Interregional thickness acute variation will lead to the acute variation of its fever and temperature, have an impact to the stability of Electric radiant Heating Film, meeting
Influence whole service life and safety.
So continuous transition refers to the thickness gradient of transitional region not higher than 100 microns/1000 microns.Optionally, mistake
The thickness gradient in region is crossed not higher than 50 microns/1000 microns.Further, the thickness gradient of transitional region is micro- not higher than 10
Rice/1000 microns.
It should be noted that continuous transition, which is selected from thickness, linearly increases (such as Fig. 1) and thickness with plane with in-plane
The curved property in direction increases at least one of (such as Fig. 2).The surface of the separate hot zone 131 of transitional region can be inclination
Plane is also possible to tilt cambered surface or existing clinoplain, and has inclination cambered surface.
Hot zone 131 is identical with the material of each doab 132, guarantees the steady and work of 132 electric current of doab transmission
When low fever, without additional setting intermediate metal.So doab 132 does not contain intermediate metal, that is, converge
Area 132 is flowed without containing one of silver paste coating and copper slurry coating or a variety of, reduction manufacturing cost.
In the present embodiment, heating layer 130 is made of electrically conductive ink, and hot zone 131 and each doab 132 are by conductive oil
Ink is made, and electrically conductive ink includes low temperature softening resin and conductive filler, 131 doab 132 of hot zone wherein, low temperature softening tree
The softening temperature of rouge is 70-150 DEG C.
Wherein, low temperature softening resin includes epoxy resin, phenolic resin, acrylic resin, alkyd resin, polyurethane tree
One of rouge, polyester resin, organic siliconresin, fluorocarbon resin, vinylite, cellulosic resin and polyamide
Or it is a variety of, and the softening temperature of every kind of resin is 70-150 DEG C, further, the softening temperature of low temperature softening resin is
70-120 DEG C, further, the softening temperature of low temperature softening resin is 80-100 DEG C, is reduced very to form internal clearance
To gapless heating film.Conductive filler includes graphite, carbon black, carbon nanotube, carbon fiber, carbon crystal, graphene and fullerene
It is one or more.
Low temperature softening resin and conductive filler are combined into electrically conductive ink.Wherein, the mass percent of low temperature softening resin can
To be 1%-99%, optionally, the mass percent of low temperature softening resin can be 20%-80%, further, low temperature
The mass percent of softening resin can be 40%-60%.
Heating layer 130 is made by low temperature softening resin and conductive filler, is more easier to form 130 thickness of heating layer
Continuous transition avoids the thickness in the two neighboring region of heating layer 130 from acutely increasing, meanwhile, when preparing heating film,
When compound first protective layer 110 and the second protective layer 120, due to the mobility of low temperature softening resin, formed between inside
Gap reduces even gapless Electric radiant Heating Film, generates heat more stable.
The preparation method of Electric radiant Heating Film, includes the following steps:
(1), heating layer 130 is made in the surface filming using electrically conductive ink in substrate.Using by low temperature softening resin and leading
Heating layer 130 is made in the surface filming of substrate in the electrically conductive ink that electric filler is constituted.Substrate is film, plate, one in fabric
Kind or a variety of combinations.Substrate is also possible to the substrate of the first protective layer 110 or the second protective layer 120 or other film forming.
Optionally, heating layer 130 is made in the surface one-pass film-forming using electrically conductive ink in substrate.It avoids applying using multiple
It covers or multi-laminate Calais reaches the hot zone 131 and doab 132 of different-thickness, and hot zone 131 and doab can be made
Continuous transition between 132 keeps the fever of heating film more stable.
It should be understood that film forming can be carried out by the one or more of printing, coating, spraying, in the table of substrate
Heating layer 130 is made in face printing, coating, spraying electrically conductive ink.
(2), it is covered with a busbar 140 respectively at the both ends of heating layer 130.
(3), the two sides that the first protective layer 110 and the second protective layer 120 are compound in heating layer 130 respectively is made into heating layer
130 are sandwiched between the first protective layer 110 and the second protective layer 120.
Since heating layer 130 is formed a film to obtain by the electrically conductive ink containing low temperature softening resin, then, it is protected by first
When layer 110 and the second protective layer 120 are compounded in the two sides of heating layer 130, heating layer 130 has certain mobility, can
It, can also be by busbar 140 to fill up the gap between the first protective layer 110 and the second protective layer 120 and heating layer 130
Gap between the first protective layer 110 or the second protective layer 120 is filled up, and reduces the internal clearance of entire heating film even
Gapless.And due to the gradually transition of heating layer 130, make heating layer 130 and the first protective layer 110 and the second protective layer 120 it
Between gap be more easier to fill up, form internal gapless heating film.And during compound, due to low temperature softening tree
Rouge softens at a lower temperature, so, in the process of compound first protective layer 110 and the second protective layer 120, it can make
The gap inside heating film is filled up in the flowing of heating layer 130, and will not destroy the knot of the first protective layer 110 and the second protective layer 120
Structure is able to extend the service life of heating film.
Such as: the first protective layer 110 and the second protective layer 120 are PET film, if the softening temperature of resin is excessively high,
Then during resin softens, can also PET film be made to be destroyed, to make the reduced service life of Electric radiant Heating Film.
So heating layer 130 is made using low temperature softening resin and conductive filler, in compound first protective layer 110 and
When two protective layer 120, resin can soften, and optionally, compound pressure is 0.2-30MPa, further, compound
Pressure be 0.2-20MPa, compound pressure be 0.5-10MPa, compound pressure be 0.5-5MPa, can be in compound pressure
Make the resin flowing of softening under the action of power, thus fill up heating layer 130 and the first protective layer 110 and the second protective layer 120 it
Between gap, so that heating layer 130 is filled up the gap between busbar 140 and the first protective layer 110 or the second protective layer 120,
Reduce even gapless Electric radiant Heating Film to form internal clearance.
It is compound to can be that be cold-pressed compound or hot pressing compound, optionally, it is complex as that hot pressing is compound, the compound temperature of hot pressing is
70-150 DEG C, further, the compound temperature of hot pressing is 70-120 DEG C, and further, the compound temperature of hot pressing is 100-
120 DEG C, optionally, the compound temperature of hot pressing is consistent with the softening temperature of low temperature softening resin, and less than the first protective layer 110
The fever of softening can be made during hot pressing is compound with the softening temperature of the second protective layer 120 (such as: PET film)
Layer 130 fills up the gap between heating layer 130 and the first protective layer 110 and the second protective layer 120, also fills up heating layer 130
Gap between busbar 140 and the first protective layer 110 or the second protective layer 120, to form internal gapless fever
Film, and the structure that can be avoided the first protective layer 110 and the second protective layer 120 is destroyed, to make the fever of heating film more
Add stabilization, and is able to extend the service life of heating film.
Electric heating film preparation electric heating products can be used in a kind of electric heating products, including above-mentioned Electric radiant Heating Film.Such as: heating foot
Pad, electric blanket, heating mouse pad, insulation film etc..Keep the fever of electric heating products more stable, the service life is longer.
Embodiment 1
Use the electrically conductive ink for the epoxy resin for being 70-80 DEG C (such as: 70 DEG C, 75 DEG C or 80 DEG C) containing softening temperature
For raw material, wherein the mass percent that epoxy resin accounts for non-volatile component is 20%.
It using the cylindricality applicator roll with different meshes mesh, is coated on epoxy resin base plate, is formed after dry
Heating layer 130 with three-dimensional structure.Wherein, the mesh on applicator roll in hot zone 131 is 250 mesh shallow bore holes, doab 132
For 100 mesh deep holes, juncture area is with the gradually transition of the gradient of 30 mesh/100 micron.There is one section among applicator roll doab 132
The part that width is 1 centimetre uses the mesoporous of 150 mesh.
Obtained heating layer 130 is continuous level construction.Referring to Fig. 1, after tested, hot zone 131 is micro- with a thickness of 5
Rice, with a thickness of 50 microns, transitional region thickness gradient is 90 microns/1000 microns for doab 132.132 groove of doab is wide by 1
Centimetre, it is 10 microns deep.It is covered with copper foil busbar 140 respectively in 130 both ends doab 132 of heating layer, finally covers first on upper layer
Protective layer 110 after hot pressing is compound, completes the production of Electric radiant Heating Film product.Wherein, the compound temperature of hot pressing is 75 DEG C, and pressure is
0.2Mpa。
It is observed that busbar 140 is completely embedded into inside heating layer 130, the variation of Electric radiant Heating Film protective layer thickness is continuous, electric heating
Gapless inside film, the fever of hot zone 131 is stablized after energization, and doab 132 is without fever, transitional region fever smooth transition.
Embodiment 2
Using total in 80-100 DEG C (such as: 80 DEG C, 85 DEG C or 100 DEG C) of ethylene-vinyl acetate containing softening temperature
The electrically conductive ink of copolymer resin is raw material, and wherein ethylene-vinyl acetate copolymer resin accounts for the 40% of total non-volatile component.
It using the gravure roll with different meshes mesh, is coated in PET film, being formed after dry has
The heating layer 130 of three-dimensional structure.Wherein, the mesh on applicator roll in hot zone 131 is 200 mesh shallow bore holes, and doab 132 is 100
Mesh deep hole, juncture area is with the gradually transition of the gradient of 20 mesh/100 micron.There is one section among gravure roll doab 132
The part that width is 1 centimetre uses the mesoporous of 150 mesh.
Obtained heating layer 130 is fringe-like structures.Referring to Fig. 2, after tested, hot zone 131 is micro- with a thickness of 10
Rice, with a thickness of 35 microns, transition region thickness gradient is 50 microns/1000 microns for doab 132.132 groove of doab is 1 li wide
Rice, it is 15 microns deep.It is covered with copper foil busbar 140 respectively in 130 both ends doab 132 of heating layer, finally covers the first guarantor on upper layer
Sheath 110 after hot pressing is compound, completes the production of Electric radiant Heating Film product.Wherein, the compound temperature of hot pressing is 100 DEG C, and pressure is
0.5Mpa。
It is observed that busbar 140 is completely embedded into inside heating layer 130, the variation of Electric radiant Heating Film protective layer thickness is continuous, electric heating
Gapless inside film, the fever of hot zone 131 is stablized after energization, and doab 132 is without fever, transitional region fever smooth transition.
Embodiment 3
Using containing softening temperature in 100-120 DEG C (such as: 100 DEG C, 110 DEG C or 120 DEG C) of vinylite
Electrically conductive ink is raw material, and wherein vinylite accounts for the 60% of total non-volatile component.
It using the gravure roll with different meshes mesh, is coated in PET film, being formed after dry has
The heating layer 130 of three-dimensional structure.Wherein, the mesh on applicator roll in hot zone 131 is 200 mesh shallow bore holes, and doab 132 is 100
Mesh deep hole, juncture area is with the gradually transition of the gradient of 20 mesh/100 micron.There is one section among gravure roll doab 132
The part that width is 1 centimetre uses the mesoporous of 150 mesh.
Obtained heating layer 130 is fringe-like structures.Referring to Fig. 2, after tested, hot zone 131 is micro- with a thickness of 10
Rice, with a thickness of 35 microns, transition region thickness gradient is 50 microns/1000 microns for doab 132.132 groove of doab is 1 li wide
Rice, it is 15 microns deep.It is covered with copper foil busbar 140 respectively in 130 two sides doab 132 of heating layer, finally covers the first guarantor on upper layer
Sheath 110 after hot pressing is compound, completes the production of Electric radiant Heating Film product.Wherein, the compound temperature of hot pressing is 120 DEG C, and pressure is
5Mpa。
It is observed that busbar 140 is completely embedded into inside heating layer 130, the variation of Electric radiant Heating Film protective layer thickness is continuous, electric heating
Gapless inside film, the fever of hot zone 131 is stablized after energization, and doab 132 is without fever, transitional region fever smooth transition.
Comparative example 1
Polyester resin electrically conductive ink using softening temperature at 160-180 DEG C (such as: 160 DEG C, 170 DEG C or 180 DEG C)
It is coated in PET film for raw material using the gravure roll of 200 mesh shallow bore holes, forms the hair of consistency of thickness after dry
Thermosphere 130.
Obtained heating layer 130 is fringe-like structures.Referring to Fig. 3, after tested, with a thickness of 10 microns.In heating layer
Silver paste coating is printed at 130 both ends, is covered with copper foil busbar 140 respectively on silver paste coating, is finally covered with PET on upper layer and protects
Cuticula after hot pressing is compound, completes the production of Electric radiant Heating Film product.Wherein, the compound temperature of hot pressing is 90 DEG C, pressure 0.5Mpa.
It is observed that busbar 140 is completely in above heating layer 130, the variation of Electric radiant Heating Film protective layer thickness is discontinuous, electricity
There is obvious gap inside hotting mask.The fever of hot zone 131 is stablized after energization, and doab 132 generates heat, heating layer 130 and the first protection
Join domain fever between layer 110 and the second protective layer 120 has mutation.Judge that this electric heating membrane stability and safety are poor.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of Electric radiant Heating Film, which is characterized in that including the first protective layer, heating layer and the second protective layer, the heating layer is sandwiched in
Between first protective layer and second protective layer, the heating layer is made of electrically conductive ink, and the electrically conductive ink includes
Low temperature softening resin and conductive filler, wherein the softening temperature of the low temperature softening resin is 70-150 DEG C.
2. Electric radiant Heating Film according to claim 1, which is characterized in that the low temperature softening resin includes epoxy resin, phenolic aldehyde
Resin, acrylic resin, alkyd resin, polyurethane resin, polyester resin, organic siliconresin, fluorocarbon resin, vinylite,
One of cellulosic resin and polyamide are a variety of.
3. Electric radiant Heating Film according to claim 1, which is characterized in that the conductive filler includes graphite, carbon black, carbon nanometer
Pipe, carbon fiber, carbon crystal, graphene and fullerene it is one or more.
4. Electric radiant Heating Film according to claim 1-3, which is characterized in that the Electric radiant Heating Film further includes busbar, institute
It states busbar and is set to the heating layer, the busbar is sandwiched between first protective layer and second protective layer.
5. Electric radiant Heating Film according to claim 1-3, which is characterized in that the heating layer includes hot zone and remittance
Area is flowed, the surface of the hot zone forms the doab, the thickness with a thickness of the hot zone of the doab
1.01-10 times, the hot zone is to the equal continuous transition in the doab.
6. Electric radiant Heating Film according to claim 5, which is characterized in that it is in line that the continuous transition, which is selected from thickness with in-plane,
Property increase and at least one of thickness increases with the curved property of in-plane.
7. Electric radiant Heating Film according to claim 6, which is characterized in that the continuous transition refers to the thickness gradient of transitional region
Not higher than 100 microns/1000 microns.
8. a kind of preparation method of the described in any item Electric radiant Heating Films of claim 1-7, which comprises the steps of:
(1), the heating layer is made in the surface filming of substrate using the electrically conductive ink；
(2), the two sides that first protective layer and second protective layer are compound in the heating layer respectively is made into the fever
Layer is sandwiched between first protective layer and second protective layer.
9. preparation method according to claim 8, which is characterized in that described to be complex as hot pressing compound；
Optionally, the compound composite pressure of the hot pressing is 0.2-30MPa；
Optionally, the compound combined temp of the hot pressing is 70-150 DEG C.
10. a kind of electric heating products, which is characterized in that including the described in any item Electric radiant Heating Films of claim 1-7.
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