CN103687098A - PTC (Positive Temperature Coefficient) heating sheet, low-temperature radiating electrothermal film and preparation method of low-temperature radiating electrothermal film - Google Patents
PTC (Positive Temperature Coefficient) heating sheet, low-temperature radiating electrothermal film and preparation method of low-temperature radiating electrothermal film Download PDFInfo
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Abstract
The invention discloses a PTC (Positive Temperature Coefficient) heating sheet, a low-temperature radiating electrothermal film and a preparation method of the low-temperature radiating electrothermal film. The PTC heating sheet comprises a substrate and conducting electrodes which are compounded on both sides of the substrate; the conducting electrodes are made of copper foils; a plurality of projections are formed on one side of each copper foil, thereby forming a rough surface; each copper foil is fixed on the substrate by thermocompression bonding through the rough surface. The PTC heating sheet, the low-temperature radiating electrothermal film and the preparation method of the low-temperature radiating electrothermal film disclosed by the invention have the advantages of simple process, low cost, high peeling strength, long service life, realization of continuous production, saving in energy, environmental friendliness, comfort, health care and wide application range.
Description
Technical field
The present invention relates to a kind of fever tablet and Electric radiant Heating Film and preparation method thereof, relate in particular to a kind of PTC fever tablet and low-temp radiating electrothermal membrane and preparation method thereof.
Background technology
Low-temp radiating electrothermal membrane is the low-temperature heating device that can generate heat after a kind of energising, it is mainly used in heating residential, the important way of hot-water heating as an alternative, can be for northern China rural area or southern warming, and need to control the northern big city central heating of pollutant sources.For the material of making low-temp radiating electrothermal membrane, there is positive temperature effect, so that such Electric radiant Heating Film has the good temperature function of limit certainly.On market, common Electric radiant Heating Film is between insulation polyester film, to be made through processing, hot pressing by electrically conductive ink printing, metal electrode bar, prints carbon back ink type.
The manufacture craft of the flexible heating film of tradition is on insulating substrate surface, to apply and silk screen printing electrically conductive ink.Printing carbon back ink type low-temp radiating electrothermal membrane complex process, cost is higher, and have that peel strength is not ideal enough, printing quality is difficult to the problems such as control, the ag paste electrode being coated with is easily oxidized, in use because repeatedly expanding with heat and contract with cold, there will be blind crack, thereby cause life of product greatly to reduce.
Summary of the invention
The object of the invention is to overcome the defect of prior art, and provide a kind of PTC fever tablet and low-temp radiating electrothermal membrane and preparation method thereof, there is technique simply with low cost, the good life-span of peel strength is long, can realize serialization production, energy-conserving and environment-protective, comfort health-care, advantage applied widely.
The technical scheme that realizes above-mentioned purpose is:
A kind of PTC fever tablet of the present invention, comprise a base material and the conductive electrode that is compound in described base material both sides, described conductive electrode adopts Copper Foil, and described Copper Foil simultaneously forms a plurality of projections and forms matsurface, and described Copper Foil is fixed on described base material by described matsurface hot pressing.
Further improvement of the present invention is: the mass percent component that forms described base material is:
Further improvement of the present invention is: described conductive filler adopts carbon black; Described inorganic filler adopts magnesium hydroxide.
Further improvement of the present invention is: the width of described Copper Foil is 5-15mm.
The low-temp radiating electrothermal membrane of a kind of PTC fever tablet of the present invention, comprises that described PTC fever tablet, thermostat and hot pressing is fixed on the dielectric film on described PTC fever tablet two sides; The conductive electrode of described PTC fever tablet is connected with wire, and described wire is connected with waterproof plug, and described thermostat is connected on described wire.
Further improvement of the present invention is: described thermostat is connected in a temperature control centre by a connecting line.
Further improvement of the present invention is: described dielectric film is coated with glue-line, and is fixed in described PTC fever tablet by described glue-line hot pressing.
Further improvement of the present invention is: described glue-line adopts PUR or adhesive sticker.
Further improvement of the present invention is: described dielectric film adopts polyester film, polypropylene screen or polyamide membrane.
Further improvement of the present invention is: described waterproof plug adopts fast plug.
The preparation method of a kind of low-temp radiating electrothermal membrane of the present invention, comprises step:
S1: the mass percent ratio according to high density polyethylene (HDPE) 50～70%, conductive filler 20～40%, inorganic filler 5～10% and coupling agent 0.1～0.5% takes each component mixed at high speed, obtains mixed material;
S2: described mixed material is extruded by the T-shaped die orifice of single screw rod, obtained extruded material;
S3: described extruded material be pressed into fixed thickness by calender and its two edges are cut out and put down, obtaining a sheet material;
S4: described sheet material, described Copper Foil and described dielectric film are pressed together by four roll squeezers;
S5: cooling rolling;
S6: cut into Len req by demand;
S7: conducting wire, waterproof plug are also installed thermostat on wire.
Further improvement of the present invention is: before described mixed at high speed step, first the described high density polyethylene (HDPE) taking is worn into powder;
Described mixed at high speed step is specially: described each component is passed through to a high-speed mixer twin-screw shear melting blend 10 minutes.
Further improvement of the present invention is: described conductive filler adopts carbon black; Described inorganic filler adopts magnesium hydroxide.
Further improvement of the present invention is: in described S2 step, described mixed material is extruded at 150～220 ℃ of temperature.
Further improvement of the present invention is: in described S3 step, described extruded material prolongs 150 ℃ of temperatures.
Further improvement of the present invention is: described S4 step specifically comprises:
Described Copper Foil is arranged to the both sides of described sheet material one side, and the matsurface of described Copper Foil is against described sheet material;
By dielectric film coating hot-melt adhesive described in two and be covered in described sheet material and described Copper Foil outside;
Described sheet material, described Copper Foil and described dielectric film are passed through to four roll squeezers hot pressing at 150 ℃.
Further improvement of the present invention is: in described S7 step, described conducting wire step specifically comprises:
By rivet, described wire is connected with described Copper Foil;
At the junction of described wire and described Copper Foil outer wrap insulating tape and aluminium foil.
The present invention has been owing to having adopted above technical scheme, makes it have following beneficial effect to be:
Conductive electrode adopts Copper Foil, has reduced manufacturing cost and the process complexity of fever tablet; Copper Foil is fixed on base material and has been guaranteed that Copper Foil is connected with the effective of base material by matsurface hot pressing.The mass percent component of base material and the employing of base material thickness, the available mains voltage that has realized low-temp radiating electrothermal membrane of the present invention is 5-220V, every square metre of 100-300W of power density, and working power can also be suitable for DC power supply with alternating current, applied widely, and the wavelength of the Far infra-red hot ray that Electric radiant Heating Film produces is between 8-14 micron, and this wave band is to people and the most useful wave band of plant growth, plays the effect of health care.Thermostat is realized the temperature control to Electric radiant Heating Film, by being connected in temperature control centre, realizes the Remote temperature control to Electric radiant Heating Film.Glue-line is used for connecting dielectric film and PTC fever tablet.By by described sheet material, described Copper Foil and the common hot pressing of described dielectric film, realized the one-step shaping of low-temp radiating electrothermal membrane main part, so can realize serialization, produce, strengthened production efficiency.
Accompanying drawing explanation
Fig. 1 is the sectional view of the low-temp radiating electrothermal membrane of PTC fever tablet of the present invention and low-temp radiating electrothermal membrane and preparation method thereof;
Fig. 2 is the low-temp radiating electrothermal membrane preparation method's of PTC fever tablet of the present invention and low-temp radiating electrothermal membrane and preparation method thereof flow chart.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Refer to Fig. 1, a kind of PTC fever tablet 1 of the present invention, comprise a base material 11 and the conductive electrode that is compound in base material 11 both sides, conductive electrode adopts Copper Foil 12, Copper Foil 12 one sides form a plurality of projections and form matsurface, Copper Foil 12 is fixed on base material 11 by matsurface hot pressing, and Copper Foil 12 width are 5-15mm, base material 11 thickness 0.10～0.40mm.
The mass percent component that forms base material 11 is:
In the present embodiment, conductive filler adopts carbon black; Inorganic filler adopts magnesium hydroxide.
Conductive electrode adopts Copper Foil 12, has reduced manufacturing cost and the process complexity of PTC fever tablet 1; Copper Foil 12 is fixed on base material 11 and has been guaranteed that Copper Foil 12 is connected with the effective of base material 11 by matsurface hot pressing.
A kind of low-temp radiating electrothermal membrane of the present invention, comprises that PTC fever tablet 1, thermostat and hot pressing is fixed on the dielectric film 2 on PTC fever tablet 1 two sides; The conductive electrode 2 of PTC fever tablet 1 is connected with wire, and wire is connected with waterproof plug, and waterproof plug adopts fast plug.Thermostat is connected on wire and by a connecting line and is connected in a temperature control centre.Dielectric film 2 is coated with glue-line 3, and is fixed in PTC fever tablet 1 by glue-line 3 hot pressing, and glue-line 3 can adopt PUR or adhesive sticker, and glue-line 3, for connecting dielectric film and PTC fever tablet, adopts PUR in the present embodiment.Dielectric film 2 can adopt polyester film, polypropylene screen (PP film) or polyamide membrane, adopts polyethylene terephthalate (PET) film in the present embodiment.
Waterproof plug is that every meter of withstand voltage 3800 volt, leakage current are less than 0.1mA, classification of waterproof IPX7, plug specials more than insulation resistance 100 megaohms.
Due to the mass percent component of base material 11 and the employing of base material 11 thickness, the available mains voltage that has realized low-temp radiating electrothermal membrane of the present invention is 5-220V, every square metre of 100-300W of power density, and working power can also be suitable for DC power supply with alternating current, applied widely, and the wavelength of the Far infra-red hot ray that Electric radiant Heating Film produces is between 8-14 micron, and this wave band is to people and the most useful wave band of plant growth, plays the effect of health care.
Low-temp radiating electrothermal membrane of the present invention also has the following advantages:
1, energy-conserving and environment-protective: electric conversion efficiency is greater than 95%, have from limitting temperature function, directly clean energy resource electric power are converted to heat energy, low-carbon environment-friendly.
2, comfort health-care: electric heating ground film heating meets the needs of human body to heating, warm of foot is cool, and be the heat supply of large area low-temp radiating, make the lower and uniform temperature fields of surface temperature in addition, the wavelength of the Far infra-red hot ray that Electric radiant Heating Film produces is between 8-14 micron, and this is considered to people and the most useful wave band of plant growth.
3, applied widely: working power both available alternating current is also suitable for DC power supply, supply voltage 5-220V, every square metre of 100-300W of power density, these are all for the application of Electric radiant Heating Film provides a broad scope.
Refer to Fig. 1,2, the preparation method of a kind of low-temp radiating electrothermal membrane of the present invention, comprises step:
S1: the mass percent ratio according to high density polyethylene (HDPE) 50～70%, conductive filler 20～40%, inorganic filler 5～10% and coupling agent 0.1～0.5% takes each component, then high density polyethylene (HDPE) is worn into powder, each component, by a high-speed mixer twin-screw shear melting blend 10 minutes, is obtained to mixed material; Wherein, conductive filler adopts carbon black; Inorganic filler adopts magnesium hydroxide.
S2: mixed material T-shaped die orifice by single screw rod at 150～220 ℃ of temperature is extruded, obtained extruded material;
S3: extruded material be pressed into fixed thickness by calender at 150 ℃ of temperature and its two edges are cut out and put down, obtaining a sheet material that makes thickness 0.20mm, width 0.5m;
S4: by four roll squeezers, sheet material, Copper Foil 12 and dielectric film 2 are pressed together, specifically comprise step:
Copper Foil 12 is arranged to the both sides of sheet material one side, and the matsurface of Copper Foil 12 is against sheet material, Copper Foil 12 width are 15mm;
By two dielectric film 2 coating hot-melt adhesives and be covered in sheet material and Copper Foil 12 outside, dielectric film 2 thickness are 0.1mm, PUR thickness is 0.02mm;
Sheet material, Copper Foil 12 and dielectric film 2 are passed through to four roll squeezers hot pressing at 150 ℃.
By sheet material, Copper Foil 12 and dielectric film 2 hot pressing together, realized the one-step shaping of low-temp radiating electrothermal membrane main part, so can realize serialization, produce, strengthened production efficiency.
S5: cooling rolling;
S6: cut into Len req by demand;
S7: wire is connected with Copper Foil 12 by rivet; At the junction of wire and Copper Foil 12 outer wrap insulating tape and aluminium foil; Waterproof plug is then installed and thermostat is installed on wire.
Low-temp radiating electrothermal membrane preparation technology of the present invention is simple, can be continuously produced, with low cost; And there is uniform power density and longer working life.
Now test as follows:
Table 1 base material formula table
Table one has been listed 3 formulas of test case 1-3, and wherein, coupling agent is the mass percent with respect to high density polyethylene (HDPE).
Test case 1:
According to table 1, take the high density polyethylene (HDPE) with test case 1 corresponding amount, wear into powder, powder and carbon black, magnesium hydroxide, coupling agent are put into mixed at high speed machine colour mixture 10min, gained mixed material is extruded at 150～220 ℃ of extruder temperatures, then calendering at 150 ℃ of calender temperature, make the sheet material of thickness 0.20mm width 0.5m, and two edges are cut out flat.Resulting sheet and the two-layer PET film that scribbles PUR are passed through to four roll squeezers hot pressing at 150 ℃, PET thickness is 0.1mm, PUR thickness is 0.02mm, simultaneously, in pressing process, on two edges between sheet material and PET film, place the Copper Foil that a width is 15mm, require matsurface and the sheet material pressing of Copper Foil.Rolling after cooling.Now cut a slice length and be the low-temp radiating electrothermal membrane of 1m for test, its resistance is 500 Ω left and right, and under 220V voltage, recording power is 93W.
Test case 2:
According to table 1, take each component with test case 2 corresponding amounts, manufacture method is with test case 1, and its resistance is 200 Ω left and right, and under 110V voltage, recording power is 61W.
Test case 3:
According to table 1, take each component with test case 3 corresponding amounts, sheet thickness calendering is 0.25mm, and all the other manufacture methods are with test case 1, and its resistance is 50 Ω left and right, and under 60V voltage, recording power is 67W.
By test case 1-3, obtain test result as follows:
| Test item | Test case 1 | Test case 2 | Test case 3 |
| Fever tablet thickness (mm) | 0.201～0.208 | 0.204-0.209 | 0.246-0.254 |
| Power (w) | 93 | 61 | 67 |
Above result shows that the power of low-temp radiating electrothermal membrane can control by changing the proportioning of carbon black and the thickness of fever tablet.
Below embodiment has been described in detail the present invention by reference to the accompanying drawings, and those skilled in the art can make many variations example to the present invention according to the above description.Thereby some details in embodiment should not form limitation of the invention, the present invention will be usingd scope that appended claims defines as protection scope of the present invention.
Claims (17)
1. a PTC fever tablet, comprise a base material and the conductive electrode that is compound in described base material both sides, it is characterized in that, described conductive electrode adopts Copper Foil, described Copper Foil simultaneously forms a plurality of projections and forms matsurface, and described Copper Foil is fixed on described base material by described matsurface hot pressing.
2. PTC fever tablet according to claim 1, is characterized in that: the mass percent component that forms described base material is:
3. PTC fever tablet according to claim 2, is characterized in that: described conductive filler adopts carbon black; Described inorganic filler adopts magnesium hydroxide.
4. PTC fever tablet according to claim 3, is characterized in that: the width of described Copper Foil is 5-15mm.
5. a low-temp radiating electrothermal membrane for the PTC fever tablet based on described in claim 1-4 any one, is characterized in that: comprise that described PTC fever tablet, thermostat and hot pressing is fixed on the dielectric film on described PTC fever tablet two sides; The conductive electrode of described PTC fever tablet is connected with wire, and described wire is connected with waterproof plug, and described thermostat is connected on described wire.
6. low-temp radiating electrothermal membrane according to claim 5, is characterized in that: described thermostat is connected in a temperature control centre by a connecting line.
7. according to the low-temp radiating electrothermal membrane described in claim 5 or 6, it is characterized in that: described dielectric film is coated with glue-line, and be fixed in described PTC fever tablet by described glue-line hot pressing.
8. low-temp radiating electrothermal membrane according to claim 9, is characterized in that: described glue-line adopts PUR or adhesive sticker.
9. low-temp radiating electrothermal membrane according to claim 8, is characterized in that: described dielectric film adopts polyester film, polypropylene screen or polyamide membrane.
10. low-temp radiating electrothermal membrane according to claim 9, is characterized in that: described waterproof plug adopts fast plug.
11. 1 kinds of preparation methods based on low-temp radiating electrothermal membrane claimed in claim 10, is characterized in that, comprise step:
S1: the mass percent ratio according to high density polyethylene (HDPE) 50～70%, conductive filler 20～40%, inorganic filler 5～10% and coupling agent 0.1～0.5% takes each component mixed at high speed, obtains mixed material;
S2: described mixed material is extruded by the T-shaped die orifice of single screw rod, obtained extruded material;
S3: described extruded material be pressed into fixed thickness by calender and its two edges are cut out and put down, obtaining a sheet material;
S4: described sheet material, described Copper Foil and described dielectric film are pressed together by four roll squeezers;
S5: cooling rolling;
S6: cut into Len req by demand;
S7: conducting wire, waterproof plug are also installed thermostat on wire.
The preparation method of 12. low-temp radiating electrothermal membranes according to claim 11, is characterized in that, before described mixed at high speed step, first the described high density polyethylene (HDPE) taking is worn into powder;
Described mixed at high speed step is specially: described each component is passed through to a high-speed mixer twin-screw shear melting blend 10 minutes.
The preparation method of 13. low-temp radiating electrothermal membranes according to claim 12, is characterized in that, described conductive filler adopts carbon black; Described inorganic filler adopts magnesium hydroxide.
The preparation method of 14. low-temp radiating electrothermal membranes according to claim 13, is characterized in that, in described S2 step, described mixed material is extruded at 150～220 ℃ of temperature.
The preparation method of 15. low-temp radiating electrothermal membranes according to claim 14, is characterized in that, in described S3 step, described extruded material prolongs 150 ℃ of temperatures.
The preparation method of 16. low-temp radiating electrothermal membranes according to claim 15, is characterized in that, described S4 step specifically comprises:
Described Copper Foil is arranged to the both sides of described sheet material one side, and the matsurface of described Copper Foil is against described sheet material;
By dielectric film coating hot-melt adhesive described in two and be covered in described sheet material and described Copper Foil outside;
Described sheet material, described Copper Foil and described dielectric film are passed through to four roll squeezers hot pressing at 150 ℃.
The preparation method of 17. low-temp radiating electrothermal membranes according to claim 16, is characterized in that, in described S7 step, described conducting wire step specifically comprises:
By rivet, described wire is connected with described Copper Foil;
At the junction of described wire and described Copper Foil outer wrap insulating tape and aluminium foil.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104823764A (en) * | 2015-04-21 | 2015-08-12 | 侨健新能源科技（苏州）有限公司 | Combined agricultural heating piece |
| CN105105567A (en) * | 2015-09-17 | 2015-12-02 | 刘森 | Care bed with far-infrared emission function |
| CN109845395A (en) * | 2016-10-14 | 2019-06-04 | 热线玻璃有限责任公司 | Method and apparatus for placing busbar in film |
| CN110140422A (en) * | 2016-12-02 | 2019-08-16 | 电装多利牡株式会社 | Electric heater and its manufacturing method |
| CN111405689A (en) * | 2020-03-20 | 2020-07-10 | 青岛德通纳米技术有限公司 | Method for manufacturing flexible electrothermal film electrode |
| CN113207203A (en) * | 2021-04-19 | 2021-08-03 | 安徽精卓光显技术有限责任公司 | Substrate-free heating film production method |
| CN113278219A (en) * | 2021-05-07 | 2021-08-20 | 广东力王新材料有限公司 | Self-temperature-control heating sheet and preparation method thereof |
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| CN115257208A (en) * | 2021-12-29 | 2022-11-01 | 山东华滋自动化技术股份有限公司 | Method and device for manufacturing low-temperature electrothermal film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104823764A (en) * | 2015-04-21 | 2015-08-12 | 侨健新能源科技（苏州）有限公司 | Combined agricultural heating piece |
| CN105105567A (en) * | 2015-09-17 | 2015-12-02 | 刘森 | Care bed with far-infrared emission function |
| CN109845395A (en) * | 2016-10-14 | 2019-06-04 | 热线玻璃有限责任公司 | Method and apparatus for placing busbar in film |
| CN109845395B (en) * | 2016-10-14 | 2021-11-09 | 热线玻璃有限责任公司 | Method and apparatus for placing bus bars within a film |
| CN110140422A (en) * | 2016-12-02 | 2019-08-16 | 电装多利牡株式会社 | Electric heater and its manufacturing method |
| CN110140422B (en) * | 2016-12-02 | 2022-05-13 | 株式会社电装多利牡 | Electric heater and method for manufacturing the same |
| CN111405689A (en) * | 2020-03-20 | 2020-07-10 | 青岛德通纳米技术有限公司 | Method for manufacturing flexible electrothermal film electrode |
| CN113207203A (en) * | 2021-04-19 | 2021-08-03 | 安徽精卓光显技术有限责任公司 | Substrate-free heating film production method |
| CN113278219A (en) * | 2021-05-07 | 2021-08-20 | 广东力王新材料有限公司 | Self-temperature-control heating sheet and preparation method thereof |
| CN113423152A (en) * | 2021-06-07 | 2021-09-21 | 牛墨石墨烯应用科技有限公司 | Stretchable graphene electrothermal film and preparation method thereof |
| CN115257208A (en) * | 2021-12-29 | 2022-11-01 | 山东华滋自动化技术股份有限公司 | Method and device for manufacturing low-temperature electrothermal film |
| CN115257208B (en) * | 2021-12-29 | 2023-12-05 | 山东华滋自动化技术股份有限公司 | Manufacturing method and manufacturing device of low-temperature electrothermal film |
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