CN109587841A - A kind of electric heating film and preparation method thereof that heating efficiency is high - Google Patents
A kind of electric heating film and preparation method thereof that heating efficiency is high Download PDFInfo
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- CN109587841A CN109587841A CN201811607089.2A CN201811607089A CN109587841A CN 109587841 A CN109587841 A CN 109587841A CN 201811607089 A CN201811607089 A CN 201811607089A CN 109587841 A CN109587841 A CN 109587841A
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- 238000005485 electric heating Methods 0.000 title claims abstract description 105
- 238000010438 heat treatment Methods 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 229920001721 polyimide Polymers 0.000 claims abstract description 37
- 239000000843 powder Substances 0.000 claims abstract description 37
- 239000004642 Polyimide Substances 0.000 claims abstract description 35
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000011812 mixed powder Substances 0.000 claims abstract description 30
- 239000004411 aluminium Substances 0.000 claims abstract description 28
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 28
- 239000000853 adhesive Substances 0.000 claims abstract description 27
- 230000001070 adhesive effect Effects 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 22
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000009413 insulation Methods 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229920000642 polymer Polymers 0.000 claims abstract description 12
- 238000005516 engineering process Methods 0.000 claims abstract description 11
- 229920002635 polyurethane Polymers 0.000 claims abstract description 9
- 239000004814 polyurethane Substances 0.000 claims abstract description 9
- 238000004544 sputter deposition Methods 0.000 claims description 25
- 239000002002 slurry Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 19
- 239000010949 copper Substances 0.000 claims description 12
- 239000011159 matrix material Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 239000005030 aluminium foil Substances 0.000 claims description 5
- 239000011889 copper foil Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000007943 implant Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 2
- -1 poly- ammonia Ester Chemical class 0.000 claims description 2
- QKIUAMUSENSFQQ-UHFFFAOYSA-N dimethylazanide Chemical compound C[N-]C QKIUAMUSENSFQQ-UHFFFAOYSA-N 0.000 claims 1
- 238000001755 magnetron sputter deposition Methods 0.000 claims 1
- 239000000919 ceramic Substances 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 abstract description 3
- 238000002310 reflectometry Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 4
- 150000003949 imides Chemical class 0.000 description 4
- 238000002791 soaking Methods 0.000 description 3
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000005439 thermosphere Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 229910017083 AlN Inorganic materials 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 150000002466 imines Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012546 transfer Methods 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
-
- 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
- Laminated Bodies (AREA)
- Surface Heating Bodies (AREA)
- Resistance Heating (AREA)
Abstract
The present invention provides a kind of electric heating film and preparation method thereof that heating efficiency is high, belongs to exothermic material preparation technical field.The electric heating film is made of electric heating layer, thermal insulation layer, insulated thermal insulating layer, electric heating layer is formed by being coated on electric heating layer basis material after mixed powder and adhesive mixing, mixed powder is made of graphite powder, Ce powder, Y powder and the mixing of Cu powder within 50nm partial size, and adhesive is made of the mixing of dimethylbenzene, dimethylformamide, polyurethane and polyimides Polymer Solution；Electric heating layer basis material is polyimides, and thermal insulation layer is alumina ceramic layer.Electric heating film of the invention is optimized by conductive material, improve the heating efficiency of material, it is used as by selective oxidation aluminium ceramic layer to heat-conducting layer, improve pyroconductivity, it is used as insulated thermal insulating layer that can reduce heat loss using the aluminium and insulating layer of tool high heat reflectivity are compound, by the combination of three means, the thermal efficiency can be further increased on the basis of existing technology.
Description
[technical field]
The present invention relates to exothermic material preparation technical fields, and in particular to a kind of electric heating film that heating efficiency is high and its system
Preparation Method.
[background technique]
Electric heating film, the plane heater element being made of electrically insulating material with the heating resistor material encapsulated in it,
It is a kind of heating element emerging in recent years, the characteristics of it has drawn two kinds of heating elements of PTC and conductive coating is fabricated, main
It is used for heating of house and environment temperature and keeps aspect, when work converts electrical energy into thermal energy, and by thermal energy mainly with radiation
Form is transmitted outward, and electric heating film has had raising by a relatively large margin relative to the heating efficiency of heating wire, but it is improving liter
Warm speed, heating temperature, the raising thermal efficiency, improving pyroconductivity etc., there are also spaces to be hoisted.
[summary of the invention]
Goal of the invention of the invention is: in view of the above problems, a kind of electric heating film and preparation method thereof is provided,
Electric heating film of the invention is optimized by conductive material, improves the heating efficiency of material, passes through selective oxidation aluminium ceramic layer
As to heat-conducting layer, pyroconductivity is improved, is used as insulated thermal insulating layer that can subtract using the aluminium and insulating layer of tool high heat reflectivity are compound
Few heat loss can further increase the thermal efficiency by the combination of three means on the basis of existing technology.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of electric heating film that heating efficiency is high, the electric heating film are by electric heating layer and to be respectively coated by electric heating layer
Thermal insulation layer, the insulated thermal insulating layer composition of tow sides, the electricity heating layer is by mixed powder and adhesive 2- in mass ratio
It is coated on electric heating layer basis material and is formed after 3:10 mixing, wherein mixed powder is by graphite powder, the Ce within 50nm partial size
Powder, Y powder and Cu powder are 12-18:2:3:6 mixing composition in mass ratio, and adhesive is by dimethylbenzene, dimethylformamide, polyurethane
With polyimides Polymer Solution by quality proportioning be 1:2:1:4-6 mixing composition；The electricity heating layer basis material is polyamides
Imines, the thermal insulation layer is using alumina ceramic layer.
Preferably, the insulated thermal insulating layer includes polyimide flex basal layer, and in polyimide flex basal layer
One layer of aluminium film is coated on one face.
Preferably, the aluminium film uses magnetically controlled DC sputtering technology, and aluminium film is with a thickness of 0.03-0.05mm.
The preparation method of the high electric heating film of above-mentioned heating efficiency, comprising the following steps:
(1) preparation of electric heating layer slurry: it is in mass ratio by graphite powder, Ce powder, Y powder and the Cu powder within 50nm partial size
12-18:2:3:6 mixes to obtain mixed powder after weighing, and is in mass ratio then 2-3:10 to mixed powder according to mixed powder and adhesive
Middle addition adhesive is sufficiently mixed, grinds to get electric heating layer slurry, wherein adhesive be by dimethylbenzene, dimethylformamide,
Polyurethane and polyimides Polymer Solution are 1:2:1:4-6 mixing compositions by quality proportioning；
(2) electric heating layer slurry is coated on polyimide matrix material by coating machine, heated drying equipment baking
After immerse electric heating layer and be solidificated on polyimide matrix material to form electric heating film, the temperature in baking process be by
100 DEG C -300 DEG C gradually rise；
(3) implant electrode on electric heating film, copper foil for electrode or uses aluminium foil；
(4) aluminium oxide ceramics is plated what electric heating film was coated with electric heating layer slurry using d.c. sputtering technology on one side
Layer；
(5) insulated thermal insulating layer is wrapped up on electric heating layer basis material using laminating machine, when package, insulated thermal insulating layer is coated with
The one side of aluminium film is contacted with heating layer basis material.
Preferably, the specific requirement of step (4) are as follows: using rafifinal as target, the flow of Ar/O2 in the working gas of sputtering
Than for 12-18:1, operating air pressure 1.0-3.0Pa, sputtering power 50-120W, heat treatment temperature is 200~300 DEG C.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, electric heating film of the invention is optimized by conductive material, by mixing Cu powder and dilute in graphite powder
Ce powder, Y powder in soil, and certain mixed proportion is controlled, be conducive to raising electric heating film by electric energy and be converted to infrared radiant energy
Transfer efficiency.
2, insulating layer is required structure in electric heating film, but the material that insulating layer uses is generally high molecular polymer,
With lower thermal coefficient, therefore the decaying of heat can be brought, electric heating film of the invention using alumina ceramic layer,
Alumina ceramic layer not only has a good insulating properties, but also itself does not accumulate heat, and thermal conductivity is very high, when work, will send out
The heat that thermosphere generates directly is conducted by alumina ceramic layer, does not have insulating layer and heat attenuation, can be in same a period of time
It is interior to take away more heats, the loss of heat is reduced, the heat conduction efficiency of electric heating film is further increased.
3, electric heating film generally only needs single side to conduct heat in use environment, it is therefore desirable to which another side has preferable exhausted
Hot, to avoid the loss of heat, the present invention is used as insulated thermal insulating layer can using the aluminium and insulating layer that have high heat reflectivity are compound
Heat loss is reduced, more heats is exported from heat-conducting layer, can further improve the thermal efficiency of heating film.
[specific embodiment]
In order to more clearly express the present invention, below by way of specific embodiment, the invention will be further described.
Embodiment 1
A kind of electric heating film that heating efficiency is high, the electric heating film are by electric heating layer and to be respectively coated by electric heating layer
Thermal insulation layer, the insulated thermal insulating layer composition of tow sides, the electricity heating layer is by mixed powder and adhesive in mass ratio 2:
It is coated on electric heating layer basis material and is formed after 10 mixing, wherein mixed powder is by graphite powder, the Ce within 50nm partial size
Powder, Y powder and Cu powder are 12:2:3:6 mixing composition in mass ratio, and adhesive is by dimethylbenzene, dimethylformamide, polyurethane and to gather
Acid imide Polymer Solution is 1:2:1:4 mixing composition by quality proportioning；The electricity heating layer basis material is polyimides, institute
Thermal insulation layer is stated using alumina ceramic layer；The insulated thermal insulating layer includes polyimide flex basal layer, and poly-
It is coated with one layer of aluminium film on one face of acid imide flexible base layer, and aluminium film is with a thickness of 0.03mm.
The preparation method of the high electric heating film of above-mentioned heating efficiency, comprising the following steps:
(1) it prepares insulated thermal insulating layer: using magnetically controlled DC sputtering technology, plated in a face of polyimide flex basal layer
Upper one layer of aluminium film, and by control sputtering power, gas pressure and tape running speed, the aluminium film with a thickness of 0.03mm is made.
(2) preparation of electric heating layer slurry: it is in mass ratio by graphite powder, Ce powder, Y powder and the Cu powder within 50nm partial size
12:2:3:6 mixes to obtain mixed powder after weighing, and is in mass ratio then that 2:10 is added into mixed powder with adhesive according to mixed powder
Adhesive is sufficiently mixed, grinds to get electric heating layer slurry, wherein adhesive is by dimethylbenzene, dimethylformamide, polyurethane
With polyimides Polymer Solution by quality proportioning be 1:2:1:4 mixing composition；
(3) electric heating layer slurry is coated on polyimide matrix material by coating machine, heated drying equipment baking
After immerse electric heating layer and be solidificated on polyimide matrix material to form electric heating film, the temperature in baking process be by
100 DEG C -300 DEG C gradually rise, and heating rate is controlled at 30min/ DEG C；Soaking time 30min；
(4) implant electrode on electric heating film, copper foil for electrode or uses aluminium foil；
(5) aluminium oxide ceramics is plated what electric heating film was coated with electric heating layer slurry using d.c. sputtering technology on one side
Layer；The specific requirement of d.c. sputtering are as follows: using rafifinal as target, the flow-rate ratio of Ar/O2 is 12:1, work in the working gas of sputtering
Making air pressure is 1.0Pa, and sputtering power 50W, heat treatment temperature is 200 DEG C；
(6) insulated thermal insulating layer is wrapped up on electric heating layer basis material using laminating machine, when package, insulated thermal insulating layer is coated with
The one side of aluminium film is contacted with heating layer basis material.
Embodiment 2
A kind of electric heating film that heating efficiency is high, the electric heating film are by electric heating layer and to be respectively coated by electric heating layer
The thermal insulation layers of tow sides, insulated thermal insulating layer composition, the electricity heating layer be by mixed powder and adhesive in mass ratio
Be coated on electric heating layer basis material and formed after 2.5:10 mixing, wherein mixed powder be by within 50nm partial size graphite powder,
Ce powder, Y powder and Cu powder be in mass ratio 15:2:3:6 mixing composition, adhesive be by dimethylbenzene, dimethylformamide, polyurethane and
Polyimides Polymer Solution is 1:2:1:5 mixing composition by quality proportioning；The electricity heating layer basis material is polyimides,
The thermal insulation layer is using alumina ceramic layer；The insulated thermal insulating layer includes polyimide flex basal layer, and
It is coated with one layer of aluminium film on one face of polyimide flex basal layer, and aluminium film is with a thickness of 0.04mm.
The preparation method of the high electric heating film of above-mentioned heating efficiency, comprising the following steps:
(1) it prepares insulated thermal insulating layer: using magnetically controlled DC sputtering technology, plated in a face of polyimide flex basal layer
Upper one layer of aluminium film, and by control sputtering power, gas pressure and tape running speed, the aluminium film with a thickness of 0.04mm is made.
(2) preparation of electric heating layer slurry: it is in mass ratio by graphite powder, Ce powder, Y powder and the Cu powder within 50nm partial size
12:2:3:6 mixes to obtain mixed powder after weighing, and is in mass ratio then that 2.5:10 adds into mixed powder according to mixed powder and adhesive
Enter adhesive, is sufficiently mixed, grinds to get electric heating layer slurry, wherein adhesive is by dimethylbenzene, dimethylformamide, poly- ammonia
Ester and polyimides Polymer Solution are 1:2:1:5 mixing compositions by quality proportioning；
(3) electric heating layer slurry is coated on polyimide matrix material by coating machine, heated drying equipment baking
After immerse electric heating layer and be solidificated on polyimide matrix material to form electric heating film, the temperature in baking process be by
100 DEG C -300 DEG C gradually rise, and heating rate is controlled at 30min/ DEG C；Soaking time 50min；
(4) implant electrode on electric heating film, copper foil for electrode or uses aluminium foil；
(5) aluminium oxide ceramics is plated what electric heating film was coated with electric heating layer slurry using d.c. sputtering technology on one side
Layer；The specific requirement of d.c. sputtering are as follows: using rafifinal as target, the flow-rate ratio of Ar/O2 is 15:1, work in the working gas of sputtering
Making air pressure is 2.0Pa, and sputtering power 80W, heat treatment temperature is 250 DEG C；
(6) insulated thermal insulating layer is wrapped up on electric heating layer basis material using laminating machine, when package, insulated thermal insulating layer is coated with
The one side of aluminium film is contacted with heating layer basis material.
Embodiment 3
A kind of electric heating film that heating efficiency is high, the electric heating film are by electric heating layer and to be respectively coated by electric heating layer
Thermal insulation layer, the insulated thermal insulating layer composition of tow sides, the electricity heating layer is by mixed powder and adhesive in mass ratio 3:
It is coated on electric heating layer basis material and is formed after 10 mixing, wherein mixed powder is by graphite powder, the Ce within 50nm partial size
Powder, Y powder and Cu powder are 18:2:3:6 mixing composition in mass ratio, and adhesive is by dimethylbenzene, dimethylformamide, polyurethane and to gather
Acid imide Polymer Solution is 1:2:1:6 mixing composition by quality proportioning；The electricity heating layer basis material is polyimides, institute
Thermal insulation layer is stated using alumina ceramic layer；The insulated thermal insulating layer includes polyimide flex basal layer, and poly-
It is coated with one layer of aluminium film on one face of acid imide flexible base layer, and aluminium film is with a thickness of 0.05mm.
The preparation method of the high electric heating film of above-mentioned heating efficiency, comprising the following steps:
(1) it prepares insulated thermal insulating layer: using magnetically controlled DC sputtering technology, plated in a face of polyimide flex basal layer
Upper one layer of aluminium film, and by control sputtering power, gas pressure and tape running speed, the aluminium film with a thickness of 0.05mm is made.
(2) preparation of electric heating layer slurry: it is in mass ratio by graphite powder, Ce powder, Y powder and the Cu powder within 50nm partial size
18:2:3:6 mixes to obtain mixed powder after weighing, and is in mass ratio then that 3:10 is added into mixed powder with adhesive according to mixed powder
Adhesive is sufficiently mixed, grinds to get electric heating layer slurry, wherein adhesive is by dimethylbenzene, dimethylformamide, polyurethane
With polyimides Polymer Solution by quality proportioning be 1:2:1:6 mixing composition；
(3) electric heating layer slurry is coated on polyimide matrix material by coating machine, heated drying equipment baking
After immerse electric heating layer and be solidificated on polyimide matrix material to form electric heating film, the temperature in baking process be by
100 DEG C -300 DEG C gradually rise, and heating rate is controlled at 30min/ DEG C；Soaking time 60min；
(4) implant electrode on electric heating film, copper foil for electrode or uses aluminium foil；
(5) aluminium oxide ceramics is plated what electric heating film was coated with electric heating layer slurry using d.c. sputtering technology on one side
Layer；The specific requirement of d.c. sputtering are as follows: using rafifinal as target, the flow-rate ratio of Ar/O2 is 18:1, work in the working gas of sputtering
Making air pressure is 3.0Pa, and sputtering power 120W, heat treatment temperature is 300 DEG C；
(6) insulated thermal insulating layer is wrapped up on electric heating layer basis material using laminating machine, when package, insulated thermal insulating layer is coated with
The one side of aluminium film is contacted with heating layer basis material.
Comparative example 1
This example and embodiment 2 the difference is that: mixed powder is replaced using the graphite powder of equivalent, thermal insulation layer and absolutely
Edge thermal insulation layer is all made of polyimide film, does not do other processing.
Comparative example 2
This example and embodiment 2 the difference is that: the Ce powder in mixed powder is replaced using the graphite powder of equivalent, and insulation is led
Silicon nitride in thermosphere is replaced using aluminium nitride.
Comparative example 3
This example and embodiment 2 the difference is that: the mass ratio of graphite powder, Ce powder, Y powder and Cu powder in mixed powder is
2:2:3:2, thermal insulation layer are replaced using polyimide film.
Heating property test:
Test 1: heating rate test
In order to keep comparison result more acurrate, in production, the thickness of each layer of the electric heating film of each embodiment and comparative example is connect
It is close consistent, heating film made of embodiment 1-3 and comparative example is fabricated to the size that length and width is respectively 80mm × 10mm
Electrode is connected the power supply that voltage is 10V, (had with the front that the probe of temperature measuring device compresses electric heating film by consistent square piece
Thermally conductive insulating layer) and reverse side (have heat-insulating layer while), tested when energization 1min, 5min and 10min
The temperature of electric heating film tow sides, result are as shown in table 1 below.
The temperature test result on 1 heating film two sides of table
From the results shown in Table 1, the heating film in 1-3 of embodiment of the present invention group adds under the premise of power supply is identical
The heat identical time, faster than the electric heating film in comparative example 1-3, the temperature that temperature maintains after stablizing is higher for heating rate, says
The bright present invention makes it be rapidly heated aspect advantageously by improving in terms of exothermic material and thermally conductive insulating layer.It is real
The temperature difference for applying electric heating film front and back sides in a 1-3 group is bigger, illustrates that the present invention by the setting reflecting layer Al, makes its insulated heat film
With preferable heat-proof quality.
Test two: thermal efficiency assessment
In order to keep comparison result more acurrate, in production, the thickness of each layer of the electric heating film of each embodiment and comparative example is connect
Close consistent, it is respectively 200mm × 10mm's that heating film made of embodiment 1-3 and comparative example 1-3, which is fabricated to length and width,
Square piece of the same size, the power consumption when front middle portion temperature of heating film is warming up to 300 DEG C by test, result such as the following table 2
It is shown.
2 heating film power consumption test result of table
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Power consumption (W) | 76.8 | 80.2 | 78.7 | 137.2 | 127.9 | 132.3 |
From the results shown in Table 1, the heating film in 1-3 of embodiment of the present invention group with the fever in comparative example 1 and 2
When film is warming up to 300 DEG C, electric heating film more power saving in embodiment 1-3, illustrate the present invention thermal efficiency advantageously.
Above description is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
Bright patent claim, it is all the present invention suggested by technical spirit under completed same changes or modifications change, should all belong to
In the covered the scope of the patents of the present invention.
Claims (5)
1. a kind of electric heating film that heating efficiency is high, it is characterised in that: the electric heating film is by electric heating layer and to be respectively coated by
It is formed in the thermal insulation layer of electric heating layer tow sides, insulated thermal insulating layer, the electricity heating layer is by mixed powder and adhesive
It is coated on electric heating layer basis material and is formed after the mixing of 2-3:10 in mass ratio, wherein mixed powder is by within 50nm partial size
Graphite powder, Ce powder, Y powder and Cu powder be in mass ratio 12-18:2:3:6 mixing composition, adhesive is by dimethylbenzene, dimethyl
Amide, polyurethane and polyimides Polymer Solution are 1:2:1:4-6 mixing compositions by quality proportioning；The electricity heating layer matrix
Material is polyimides, and the thermal insulation layer is using alumina ceramic layer.
2. a kind of high electric heating film of heating efficiency according to claim 1, it is characterised in that: the insulated thermal insulating layer packet
Polyimide flex basal layer is included, and is coated with one layer of aluminium film on a face of polyimide flex basal layer.
3. a kind of high electric heating film of heating efficiency according to claim 3, it is characterised in that: the aluminium film uses direct current
Magnetron sputtering technique, and aluminium film is with a thickness of 0.03-0.05mm.
4. a kind of preparation method for the electric heating film that heating efficiency is high, feature according to any one of claim 2-3
It is: the following steps are included:
(1) preparation of electric heating layer slurry: being 12- by graphite powder, Ce powder, Y powder and the Cu powder within 50nm partial size in mass ratio
18:2:3:6 mixes to obtain mixed powder after weighing, and is in mass ratio then that 2-3:10 adds into mixed powder according to mixed powder and adhesive
Enter adhesive, is sufficiently mixed, grinds to get electric heating layer slurry, wherein adhesive is by dimethylbenzene, dimethylformamide, poly- ammonia
Ester and polyimides Polymer Solution are 1:2:1:4-6 mixing compositions by quality proportioning；
(2) electric heating layer slurry is coated on polyimide matrix material by coating machine, is made after heated drying equipment baking
Electric heating layer, which is immersed and is solidificated on polyimide matrix material, forms electric heating film, the temperature in baking process be by 100 DEG C-
300 DEG C gradually rise；
(3) implant electrode on electric heating film, copper foil for electrode or uses aluminium foil；
(4) alumina ceramic layer is plated what electric heating film was coated with electric heating layer slurry using d.c. sputtering technology on one side；
(5) insulated thermal insulating layer is wrapped up on electric heating layer basis material using laminating machine, when package, insulated thermal insulating layer is coated with aluminium film
One side contacted with heating layer basis material.
5. a kind of preparation method of the high electric heating film of heating efficiency according to claim 4, it is characterised in that: step
(4) specific requirement are as follows: using rafifinal as target, the flow-rate ratio of Ar/O2 is 12-18:1, work gas in the working gas of sputtering
Pressure is 1.0-3.0Pa, and sputtering power 50-120W, heat treatment temperature is 200~300 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811607089.2A CN109587841A (en) | 2018-12-27 | 2018-12-27 | A kind of electric heating film and preparation method thereof that heating efficiency is high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811607089.2A CN109587841A (en) | 2018-12-27 | 2018-12-27 | A kind of electric heating film and preparation method thereof that heating efficiency is high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109587841A true CN109587841A (en) | 2019-04-05 |
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| CN110856290A (en) * | 2019-10-25 | 2020-02-28 | 中国航发北京航空材料研究院 | Graphene composite membrane for preventing and removing ice, composite material structural member and preparation method |
| CN113795058A (en) * | 2021-09-03 | 2021-12-14 | 上海卫星工程研究所 | Self-adaptive deformation simple film heater |
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