CN104244474B - A kind of far-infrared electrothermal film - Google Patents
A kind of far-infrared electrothermal film Download PDFInfo
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- CN104244474B CN104244474B CN201410468554.4A CN201410468554A CN104244474B CN 104244474 B CN104244474 B CN 104244474B CN 201410468554 A CN201410468554 A CN 201410468554A CN 104244474 B CN104244474 B CN 104244474B
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Abstract
The present invention relates to a kind of far-infrared electrothermal film, it comprises basement membrane, coat described basement membrane upper surface and several heating carbon slurry bars spaced apart, coat on described heating carbon slurry bar and be connected in series described heating carbon slurry bar at least two current-carrying bars, cover the polyester film on described current-carrying bar, described current-carrying bar is arranged in parallel and is spaced apart, described heating carbon slurry bar (12) is formed by the coating of heating carbon slurry, and the composition of raw materials of described heating carbon slurry comprises the component of following parts by weight: 15 ~ 20 parts of carbon dusts; 10 ~ 20 parts, graphite; 5 ~ 10 parts of calcium carbide powders; 35 ~ 70 parts of organic carriers; 1 ~ 5 part of dispersant; Organic carrier comprises epoxy resin, polyurethane, acrylic resin and ethanedioic acid second diester; Far-infrared electrothermal film based on it comprises basement membrane, heating carbon slurry bar, at least two current-carrying bars, covers the polyester film on described current-carrying bar. There is good ductility, be conducive to uniform coating.
Description
Technical field
The present invention relates to a kind of Electric radiant Heating Film, be specifically related to a kind of far-infrared electrothermal film.
Background technology
Electric radiant Heating Film is the translucent polyester film that can generate heat after a kind of energising, and its skin-material is polyester film, in diaphragmBetween the line of ink marker be heating carbon slurry, the silver color bar on Electric radiant Heating Film both sides is metal current-carrying bars, is used for connecting heating carbon slurry. The eighties withCome, along with the solution of the problem such as technology, material cost, the range of application of Electric radiant Heating Film is also more and more wider, from electronics, medical treatment, to boatIt,, to agricultural, has almost permeated all fields. Far-infrared electrothermal film is starched to generate heat by carbon, and sends the far infrared of couplingWave band, has effect of physiotherapy to human body; It can arbitrarily regulate the feature of temperature also can make the most of the advantage simultaneously, by the tune of temperatureJoint, can avoid the waste of the energy, reduces the input of cost, real accomplishes energy-conserving and environment-protective.
But the large-scale application of Electric radiant Heating Film is still limited by the quality of heating carbon slurry quality. Existing heating carbon slurry is mainBecause even performance is to ensure, causes it even at adstante febre temperature distributing disproportionation, thereby affect the service life of Electric radiant Heating Film; And itsThermal transition efficiency is lower, waste electric energy.
Summary of the invention
The present invention seeks to provide in order to overcome the deficiencies in the prior art a kind of slurry evenly and thermal transition efficiency higherHeating carbon slurry.
For achieving the above object, the technical solution adopted in the present invention is: a kind of heating carbon slurry, its composition of raw materials comprisesThe component of following parts by weight:
Described organic carrier comprises epoxy resin, polyurethane, acrylic resin and ethanedioic acid second diester.
Optimally, its composition of raw materials also comprises the 2-Butoxyethyl acetate of 1～5 part.
Optimally, the mass ratio of epoxy resin, polyurethane, acrylic resin and ethanedioic acid second diester in described organic carrierBe 10～20:8～15:15～20:40～80.
Another object of the present invention is to provide a kind of far-infrared electrothermal film, and it comprises basement membrane, coats the upper of described basement membraneSurperficial and spaced apart several heating carbon slurry bars, coat on described heating carbon slurry bar and be connected in series described heating carbon slurry barAt least two current-carrying bars, cover the polyester film on described current-carrying bar, described current-carrying bar is arranged in parallel and is spaced apart,Described heating carbon slurry bar is formed by above-mentioned heating carbon slurry coating.
Optimally, it also comprises that correspondence is covered in the copper bar on current-carrying bar.
Optimally, described current-carrying bar is formed by the coating of silver slurry, and the silver powder in described silver slurry is by flake silver powder and spherical silver powderMix.
Because technique scheme is used, the present invention compared with prior art has following advantages: generate heat carbon slurry of the present inventionMixed in proportion by carbon dust, graphite, calcium carbide powder, organic carrier, dispersant, utilize on the one hand epoxy resin, polyurethane, thirdThe organic carrier of the composition such as olefin(e) acid resin and ethanedioic acid second diester, makes it have the feature that solid content is low, can be in fineness, evenDegree aspect all improves, and has good ductility, is conducive to uniform coating; Make on the other hand carbon slurry there is positive temperatureDegree coefficient feature, along with the rising of its temperature, the decline that electrical current can be progressively, reaches stable state after certain hour.
Brief description of the drawings
The structural representation that accompanying drawing 1 is far-infrared electrothermal film of the present invention;
Wherein, 1, far-infrared electrothermal film volume; 11, basement membrane; 12, heating carbon slurry bar; 13, current-carrying bar; 14, copper bar; 15, polyesterFilm.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiment of the invention is elaborated.
Embodiment 1
The present embodiment provides a kind of heating carbon slurry, and its composition of raw materials comprises the component of following parts by weight:
Wherein, organic carrier comprises epoxy resin, polyurethane, acrylic resin and ethanedioic acid second diester, their qualityThan being 10:8:15:40.
The preparation method of heating carbon slurry is as follows: after above-mentioned raw material components is fully mixed, with 300 object filter cloths at liquidPressure ring filters under border, then it is fully ground, and finally stirs it is fully mixed. Utilize this technique to joinThe carbon slurry that side and method make is all obtaining good improvement aspect fineness, the uniformity, and there will not be local temperature mistakeHigh and cause the phenomenon that polyester film is curling, thus be conducive to improve the life-span of Electric radiant Heating Film. (this carbon slurry has ptc characteristics in additionPtc characteristics), along with the rising of its temperature, the decline that electrical current can be progressively, reaches stable shape after certain hourState; This carbon slurry can be adjusted thermal output automatically, to reach the object of temperature control and insulation, the temperature of this Electric radiant Heating Film is controlled at≤ 80 DEG C; This is because organic carrier can form macromolecular material and have conductive ion, and the carbon that makes to generate heat slurry is not logicalUnder the state of electricity, conductive ion is evenly distributed in macromolecule matrix material with smaller spacing; After energising, along with electric energyEnergy transform into heat energy efficiently, macromolecule matrix material expands gradually and has pulled open the spacing of conductive nano ion, makes this bulk resistorIncrease gradually, heating function reduces gradually, presents " frequency conversion " effect, thereby realizes the function from the gentle energy-saving and frequency-variable of limit. ThisSample heating carbon slurry heating temp is controlled in 80 DEG C, can avoid the lasting rising of the abnormal temperature in region, when certain piece electric heatingDiaphragm area cover or window under when direct sunlight, Electric radiant Heating Film is experienced temperature and is continued the trend rising, and reduces electric current and heating meritRate, ensures the operation of the normal safety of Electric radiant Heating Film.
Embodiment 2
The present embodiment provides a kind of heating carbon slurry, and it starches roughly the samely with the heating carbon in the present embodiment 1, and different is itComposition of raw materials is:
Wherein, organic carrier comprises epoxy resin, polyurethane, acrylic resin and ethanedioic acid second diester, their qualityThan being 20:15:20:60. In the present embodiment, add 2-Butoxyethyl acetate (helping coalescent), can promote in organic carrierThe polymerization of macromolecular material.
Embodiment 3
The present embodiment provides a kind of heating carbon slurry, and it starches roughly the samely with the heating carbon in the present embodiment 1, and different is itComposition of raw materials is:
Wherein, organic carrier comprises epoxy resin, polyurethane, acrylic resin and ethanedioic acid second diester, their qualityThan being 20:12:18:70.
Embodiment 4
The present embodiment provides a kind of heating carbon slurry, and it starches roughly the samely with the heating carbon in the present embodiment 1, and different is itComposition of raw materials is:
Wherein, organic carrier comprises epoxy resin, polyurethane, acrylic resin and ethanedioic acid second diester, their qualityThan being 10:10:16:60.
Embodiment 5
The present embodiment provides a kind of heating carbon slurry, and it starches roughly the samely with the heating carbon in the present embodiment 1, and different is itComposition of raw materials is:
Wherein, organic carrier comprises epoxy resin, polyurethane, acrylic resin and ethanedioic acid second diester, their qualityThan being 20:14:15:65.
Embodiment 6
The present embodiment provides a kind of far-infrared electrothermal film, as shown in Figure 1, it mainly comprises basement membrane 11, the carbon that generates heat is starched bar 12,Current-carrying bar 13 and polyester film 15.
Wherein, the material of basement membrane is polyester film; Carbon slurry bar 12 has some, and they are parallel to each other and interval arranges, can(can adopt any heating carbon in embodiment 1 to embodiment 5 with will generate heat carbon slurry of the screen printing technique by accurateSlurry) be coated on basement membrane upper surface and make, their bearing of trend is to extend along the width of basement membrane; Current-carrying bar 13 has two at leastRoot, for silver, they are parallel to each other and interval arranges, and can silver slurry be coated on to basement membrane upper surface system by screen printing techniqueBecome, their bearing of trend is the length direction along basement membrane, and in fact current-carrying bar 13 is positioned at the top of carbon slurry bar 12, thereby if willDry root carbon slurry bar 12 couples together; Polyester film 15 covers on current-carrying bar 13, thereby realizes the close of whole far-infrared electrothermal filmEnvelope, can adopt PET material.
In the present embodiment, on current-carrying bar 13, correspondence is coated with copper bar 14, for improving the conducting power of electric current. Current-carrying barThe 13rd, formed by silver slurry coating, and silver powder in silver slurry is mixed by flake silver powder and spherical silver powder, i.e. current-carrying strip adoption sheetThe silver powder of ball integrated structure, is conducive to reduce silver-colored consumption, has improved electric conductivity, has reduced production when enhancing product performanceCost. This is because silver powder all adopts ball shape silver powder mostly in the market, although bending and hot pressing are better, and poorly conductive;Flake silver powder has high conductivity advantage, but bending and hot pressing are poor, and company is by the collocation of flake silver powder and spherical silver powder, noBut improve greatly electric conductivity, also met the requirement of bending and hot pressing, reduced the consumption of silver powder simultaneously, this silver powder technologyBe used on the current-carrying bar of Electric radiant Heating Film and can improve electric heating conversion efficiency, electric heating conversion efficiency >=95%, and saved cost, improveThe competitiveness of product. And PET film can be not curling because of excess Temperature, thereby carry life-span of whole electric heating, service lifeBe greater than 50,000 hours; The heater of Electric radiant Heating Film is carbon slurry, is almost pure resistor element circuit, therefore thermal transition efficiency is higher, makes electric heatingThe electric heating conversion ratio of film entirety reaches more than 95%. By adopting accurate screen printing technique, reach heating carbon serous coat thick allEven, live width and linear good object, make heating resistor resistance high conformity, thus promote Electric radiant Heating Film surface heat allEven property, in one square metre of this Electric radiant Heating Film, the temperature difference of any two points is no more than 1 DEG C.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the artScholar can understand content of the present invention and implement according to this, can not limit the scope of the invention with this. All according to the present inventionThe equivalence that Spirit Essence is done changes or modifies, within all should being encompassed in protection scope of the present invention.
Claims (2)
1. a far-infrared electrothermal film, it comprises basement membrane (11), coat the upper surface of described basement membrane (11) and spaced apartSeveral heating carbon slurries bars (12), coat described heating carbon slurry bar (12) and go up and be connected in series described heating carbon and starch bar (12) at leastTwo current-carrying bars (13), cover the polyester film (15) on described current-carrying bar (13), described current-carrying bar (13) is parallel to each other and establishesPut and spaced apart, it is characterized in that, described heating carbon slurry bar (12) is formed by the coating of heating carbon slurry, described heating carbon slurry formerMaterial formula comprises the component of following parts by weight:
15 ~ 20 parts of carbon dusts;
10 ~ 20 parts, graphite;
5 ~ 10 parts of calcium carbide powders;
35 ~ 70 parts of organic carriers;
1 ~ 5 part of dispersant;
Described organic carrier comprises epoxy resin, polyurethane, acrylic resin and ethanedioic acid second diester; It also comprises that correspondence coversBe placed on the copper bar (14) on current-carrying bar (13).
2. far-infrared electrothermal film according to claim 1, is characterized in that: described current-carrying bar (13) is by the coating of silver slurryBecome, the silver powder in described silver slurry is mixed by flake silver powder and spherical silver powder.
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| CN201410468554.4A CN104244474B (en) | 2014-09-15 | 2014-09-15 | A kind of far-infrared electrothermal film |
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| CN201410468554.4A CN104244474B (en) | 2014-09-15 | 2014-09-15 | A kind of far-infrared electrothermal film |
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| CN104244474B true CN104244474B (en) | 2016-05-25 |
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| CN106455152A (en) * | 2016-09-07 | 2017-02-22 | 芜湖桑乐金电子科技有限公司 | Bendable carbon crystal heating plate and manufacturing method thereof |
| CN109699094B (en) * | 2019-01-29 | 2022-01-28 | 佛山市丰晴科技有限公司 | Flexible graphene electrothermal film and manufacturing method thereof |
| CN110267370A (en) * | 2019-06-24 | 2019-09-20 | 东华大学 | A kind of health protection and warmth retention flexible electric heating compound fabric and the preparation method and application thereof |
| CN112969247A (en) * | 2021-03-23 | 2021-06-15 | 苏州汉纳材料科技有限公司 | Far infrared electrothermal film and its making method |
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| CN1183805C (en) * | 1999-12-10 | 2005-01-05 | 热离子体系国际公司 | Thermoplastic laminate fabric heater and methods for making same |
| JP3921327B2 (en) * | 2000-04-14 | 2007-05-30 | 京セラ株式会社 | Ceramic heater and manufacturing method thereof |
| CN101735561A (en) * | 2008-11-25 | 2010-06-16 | 西安宏星电子浆料科技有限责任公司 | Electrothermal organic power resistance slurry for heater |
| CN101945507B (en) * | 2010-08-12 | 2012-10-03 | 安徽桑乐金股份有限公司 | Specific frequency point far-infrared heating material and preparation method thereof |
| CN103281811B (en) * | 2011-08-12 | 2016-03-23 | 李春学 | Polymer composite electric heating material, its preparation method, with and uses thereof |
| CN102348297B (en) * | 2011-10-19 | 2013-03-27 | 信阳市环宇针织服装有限公司 | Nano carbon-fiber composite electrical heating material and preparing method thereof |
| CN102858036B (en) * | 2012-08-27 | 2014-11-05 | 苏州喜仁新材料科技有限公司 | High-resistance low-temperature heating carbon paste and preparation method thereof |
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