CN117545116A - Flexible film, preparation method and application thereof, and ice control system - Google Patents
Flexible film, preparation method and application thereof, and ice control system Download PDFInfo
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- CN117545116A CN117545116A CN202311759867.0A CN202311759867A CN117545116A CN 117545116 A CN117545116 A CN 117545116A CN 202311759867 A CN202311759867 A CN 202311759867A CN 117545116 A CN117545116 A CN 117545116A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 106
- 239000000758 substrate Substances 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 230000002265 prevention Effects 0.000 claims abstract description 10
- 238000009826 distribution Methods 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 45
- 229920000642 polymer Polymers 0.000 claims description 25
- 229910052799 carbon Inorganic materials 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 19
- 239000011231 conductive filler Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- 239000004814 polyurethane Substances 0.000 claims description 12
- 229910021389 graphene Inorganic materials 0.000 claims description 10
- 238000007639 printing Methods 0.000 claims description 10
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- 239000002086 nanomaterial Substances 0.000 claims description 9
- 229920000647 polyepoxide Polymers 0.000 claims description 9
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- 229910052751 metal Inorganic materials 0.000 claims description 8
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- 229920005749 polyurethane resin Polymers 0.000 claims description 7
- 239000004642 Polyimide Substances 0.000 claims description 6
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 6
- 239000002041 carbon nanotube Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229920000728 polyester Polymers 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- -1 polydimethylsiloxane Polymers 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
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- 238000007641 inkjet printing Methods 0.000 description 5
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
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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
- H05B3/02—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
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0202—Switches
-
- 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
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
-
- 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
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- Surface Heating Bodies (AREA)
Abstract
The invention belongs to the technical field of ice control, and particularly relates to a flexible film, a preparation method and application thereof, and an ice control system. The flexible film comprises a flexible substrate, heating/Wen Minceng distributed on the surface of the flexible substrate in an array manner, an insulating layer covering the surface of the heating/temperature-sensitive layer and an icing sensing layer distributed on the surface of the insulating layer in an array manner; the array distribution mode of the heating/temperature-sensitive layer is consistent with that of the icing sensing layer; the heating/temperature-sensitive layer contains a conductive circuit; the icing sensing layer contains a conductive circuit. The flexible film provided by the invention is used for coupling temperature monitoring, heating and icing detection, so that the real-time monitoring of a two-dimensional temperature field of the film can be realized, and meanwhile, the thermal deicing and preventing of the film can be realized by utilizing the Joule heating effect; the heating/Wen Minceng in the flexible film and the icing sensing layer adopt an array distribution mode to accurately detect the icing region and realize regional heating and deicing prevention, and good deicing prevention effect can be realized by adopting lower energy consumption.
Description
Technical Field
The invention belongs to the technical field of ice control, and particularly relates to a flexible film, a preparation method and application thereof, and an ice control system.
Background
Engineering surface ice is often generated in areas such as planes, wind driven generator blades, high-speed rail chassis and the like, and can cause potential safety hazards to equipment in the aspect of operation, so that property loss is caused. The conventional aircraft deicing technology comprises a thermal deicing technology and a mechanical deicing technology. The thermal deicing technology is widely applied because of high efficiency, and the traditional gas thermal deicing technology greatly limits the application of the thermal deicing technology in the field of composite materials because of complex systems and overhigh temperature of hot gas. Therefore, researchers have developed various electrothermal ice control techniques, such as applying metal splash techniques to prepare metal coatings or applying carbon-based conductive materials to prepare organic conductive coatings, and then applying electricity to generate joule heat, thereby heating the ice accumulation surface to achieve ice control. However, continuous heating can cause excessive heating element temperatures, resulting in thermal damage to the substrate and the heating element, and in order to avoid the occurrence of thermal damage, researchers have introduced thermocouple-type temperature sensors into the heating system. However, the existing way of introducing a temperature sensor increases the complexity of the system and does not allow precise control of the heating zone, thus causing unnecessary energy consumption.
Disclosure of Invention
In view of the above, the invention provides a flexible film, a preparation method and application thereof, and an ice prevention and removal system, and the application of the flexible film in the ice prevention and removal system can monitor the surface temperature and ice formation of equipment in real time, accurately control the area to be heated, and reduce energy consumption on the premise of ensuring good ice prevention and removal conditions.
In order to solve the technical problems, the invention provides a flexible film, which comprises a flexible substrate, heating/Wen Minceng distributed on the surface of the flexible substrate in an array manner, an insulating layer covering the surface of the heating/temperature-sensitive layer and an icing sensing layer distributed on the surface of the insulating layer in an array manner; the array distribution mode of the heating/temperature-sensitive layer is consistent with the array distribution mode of the icing sensing layer;
the heating/temperature-sensitive layer contains a conductive circuit;
the icing sensing layer contains a conductive circuit.
Preferably, the flexible substrate is made of a non-conductive polymer material;
the thickness of the flexible substrate is 0.5mm or less.
Preferably, the non-conductive polymer material is polyimide, polydimethylsiloxane or polyester.
Preferably, the heating/temperature-sensitive layer is made of a mixture of a polymer and a carbon-based conductive filler;
the polymer comprises one or more of epoxy resin, polyurethane and acrylic resin;
the carbon-based conductive filler comprises one or more of graphene, carbon nanotubes and graphite powder;
the thickness of the heating/temperature-sensitive layer is 50-200 mu m.
Preferably, the material of the insulating layer is insulating resin;
the thickness of the insulating layer is 30-100 mu m.
Preferably, the material of the icing sensing layer is a mixture of a carbon nanomaterial and a polymer; the carbon nanomaterial is one or more of carbon nanotubes, graphene and graphite powder; the polymer is one or more of high-density polyethylene, polyimide, epoxy resin, polyurethane and phenolic resin;
any array unit in the icing sensing layer is comb-tooth-shaped, annular or square in shape;
the thickness of the icing sensing layer is 10-60 mu m.
Preferably, the heating/Wen Minceng and the conductive circuit in the icing sensing layer are independently printed from a conductive metal paste.
The invention also provides a preparation method of the flexible film, which comprises the following steps:
printing a heating/temperature-sensitive conducting circuit on the surface of the flexible substrate, and then preparing an array-distributed heating/temperature-sensitive layer;
preparing an insulating layer on the surface of the heating/temperature-sensitive layer;
and preparing an array-distributed icing sensing layer after the icing sensing conductive circuit is printed on the surface of the insulating layer.
The invention also provides an application of the flexible film in the ice prevention and removal system or the flexible film prepared by the preparation method in the technical scheme.
The invention also provides an ice prevention and removal system, which comprises a flexible film 1, a temperature detection module 2 connected with a conductive circuit in a heating/temperature-sensitive layer in the flexible film 1, a relay 3 connected with the conductive circuit in the heating/temperature-sensitive layer in the flexible film 1, a power supply 4 connected with the relay 3, an icing detection module 5 connected with the conductive circuit in an icing sensing layer in the flexible film 1, and a signal processing module 6 respectively connected with the temperature detection module 2 and the icing detection module 5, wherein the signal processing module 6 is in signal connection with the relay 3;
the flexible film 1 is the flexible film according to the technical scheme or the flexible film prepared by the preparation method according to the technical scheme.
The invention provides a flexible film, which comprises a flexible substrate, heating/Wen Minceng distributed on the surface of the flexible substrate in an array manner, an insulating layer covering the surface of the heating/temperature-sensitive layer and an icing sensing layer distributed on the surface of the insulating layer in an array manner, wherein the heating/Wen Minceng is arranged on the surface of the flexible substrate; the array mode of the heating/temperature-sensitive layer is consistent with the array mode of the icing sensing layer; the heating/temperature-sensitive layer contains a conductive circuit; the icing sensing layer contains a conductive circuit. The flexible film provided by the invention is used for coupling temperature monitoring, heating and icing detection together, so that the real-time monitoring of a two-dimensional temperature field of the film can be realized, and meanwhile, the thermal deicing and preventing of the film can be realized by utilizing the Joule heating effect. According to the invention, the heating/Wen Minceng in the flexible film and the icing sensing layer are distributed in an array manner, so that the icing area can be accurately detected, the regional heating and deicing can be realized, and the good deicing effect can be realized by adopting lower energy consumption.
Drawings
FIG. 1 is a schematic diagram of an array unit in an icing sensing layer;
fig. 2 is a schematic structural view of a flexible film, wherein the upper view is a schematic planar structure, the lower view is a schematic longitudinal section structure, 7 is a flexible substrate, 8-1 is a conductive circuit in a heating/temperature-sensitive layer, 8-2 is a mixture of a polymer and a carbon-based conductive filler in the heating/temperature-sensitive layer, 9 is an insulating layer, 10-1 is a conductive circuit in an icing sensing layer, and 10-2 is a mixture of a carbon nanomaterial and a polymer in the icing sensing layer;
FIG. 3 is a schematic flow chart of a process for preparing a flexible film;
fig. 4 is a schematic structural diagram of an ice control system, wherein 1 is a flexible film, 2 is a temperature detection module, 3 is a relay, 4 is a power supply, 5 is an icing detection module, and 6 is a signal processing module.
Detailed Description
The invention provides a flexible film, which comprises a flexible substrate, heating/Wen Minceng distributed on the surface of the flexible substrate in an array manner, an insulating layer covering the surface of the heating/temperature-sensitive layer and an icing sensing layer distributed on the surface of the insulating layer in an array manner, wherein the heating/Wen Minceng is arranged on the surface of the flexible substrate; the array mode of the heating/temperature-sensitive layer is consistent with the array mode of the icing sensing layer;
the heating/temperature-sensitive layer contains a conductive circuit;
the icing sensing layer contains a conductive circuit.
The flexible film provided by the invention comprises a flexible substrate. In the present invention, the flexible substrate is preferably made of a non-conductive polymer material; the non-conductive polymer material is preferably polyimide, polydimethylsiloxane film or polyester, more preferably polyimide film or polyester.
In the present invention, the thickness of the flexible substrate is preferably 0.5mm or less, more preferably 0.1 to 0.4mm.
The flexible film provided by the invention comprises heating/temperature-sensitive layers which are distributed on the surface of the flexible substrate in an array manner. In the invention, the heating/temperature-sensitive layer material is preferably a mixture of a polymer and a carbon-based conductive filler. In the present invention, the polymer preferably includes one or more of epoxy resin, polyurethane and acrylic resin, more preferably epoxy resin or polyurethane. In the invention, when the polymer comprises more than two specific substances, the invention has no special requirement on the proportion of the specific substances, and the polymer can be prepared by adopting any proportion. In the present invention, the carbon-based conductive filler preferably includes one or more of graphene, carbon nanotubes, and graphite powder, more preferably graphene or graphite powder. In the invention, when the carbon-based conductive filler comprises more than two specific substances, the invention has no special requirement on the proportion of the specific substances, and the carbon-based conductive filler can be prepared by adopting any proportion. In the present invention, the mass ratio of the polymer to the carbon-based conductive filler is preferably 1 to 10:100, more preferably 2 to 6:100. In the invention, the conductive filler in the high polymer composite thermosensitive material is dispersed into the high polymer matrix to form a conductive chain, and the volume of the high polymer matrix is changed by external temperature change, so that the conductive network in the high polymer thermosensitive material is destroyed, and the thermosensitive effect on temperature is shown macroscopically. At lower temperature, the conductive filler forms a good conductive chain network in the high molecular polymer matrix, and the resistivity of the composite material is lower; as the external temperature rises, the thermal expansion coefficient of the conductive filler is much smaller than that of the high polymer matrix material, so that the original conductive network is destroyed, and the resistivity of the material rises; when the temperature reaches the vicinity of the melting point of the matrix, the volume of the matrix increases rapidly, further causing the conductive network to be severely damaged, and the material has obvious thermosensitive effect.
In the present invention, the thickness of the heating/temperature-sensitive layer is preferably 50 to 200. Mu.m, more preferably 80 to 150. Mu.m.
The invention has no special requirement on the array mode of the heating/temperature-sensitive layer, and only needs to divide the flexible film into a plurality of small areas. In the present invention, the array unit of the heating/temperature sensitive layer is preferably square. The size of the square is not particularly limited in the present invention. According to the invention, the heating/temperature-sensitive layer is designed into an array arrangement mode, so that the flexible film can be divided into a plurality of small areas, the temperature conditions of the small areas can be monitored in real time, and the heating areas are accurately controlled to realize regional heating and ice removal.
In the invention, the heating/temperature-sensitive layer contains a conductive circuit; the shape of the conductive circuit is designed according to the array mode of the heating/temperature-sensitive layer, and only the array units of the heating/temperature-sensitive layer can be connected. In the present invention, the conductive circuit is preferably printed from a conductive metal paste. In the present invention, the conductive metal paste is preferably a conductive copper paste or a conductive silver paste, more preferably a conductive silver paste. In the present invention, the printing is preferably inkjet printing or 3D printing.
The flexible film provided by the invention comprises an insulating layer covering the surface of the heating/temperature-sensitive layer. In the present invention, the material of the insulating layer is preferably an insulating resin; the insulating resin is preferably polyurethane or epoxy resin, more preferably polyurethane. In the present invention, the thickness of the insulating layer is preferably 30 to 100. Mu.m, more preferably 50 to 80. Mu.m. In the present invention, the material of the insulating layer fills in gaps between array units in the heating/temperature-sensitive layer.
The flexible film provided by the invention further comprises icing sensing layers distributed on the surface of the insulating layer in an array mode. In the invention, the material of the icing sensing layer is preferably a mixture of carbon nano-materials and polymers; the carbon nanomaterial is preferably one or more of carbon nanotubes, graphene and graphite powder, and more preferably graphene; the polymer is preferably one or more of high density polyethylene, polyimide, epoxy resin, polyurethane and phenolic resin, more preferably polyurethane. In the present invention, the mass ratio of the carbon nanomaterial to the polymer is preferably 8 to 18:100, more preferably 12 to 15:100. When the invention detects ice, the carbon-based conductive material is designed into different structures as the test electrodes, namely the driving end (electrode) and the receiving end (electrode), the surface is frozen, so that the impedance value between the driving end and the receiving end can be changed, the impedance spectrum can be used for detecting ice accumulation, and the difference in the numerical value change of the impedance spectrums of different media can be observed by changing the frequency of the excitation signal within a certain range.
In the present invention, the thickness of the icing sensing layer is preferably 10 to 60 μm, more preferably 30 to 50 μm.
The invention has no special requirement on the array mode of the icing sensing layer, and only needs to divide the flexible film into a plurality of small areas. In the invention, the array mode of the icing sensing layer is consistent with the array mode of the heating/temperature-sensitive layer. In the present invention, the shape of any one of the array units in the icing sensing layer is preferably a comb-tooth shape, a ring shape or a square shape. The size of the array unit is not particularly limited. According to the invention, the icing sensing layer is designed into an array arrangement mode, so that the flexible film can be divided into a plurality of small areas, the icing condition of the small areas can be monitored in real time, and the heating areas are accurately controlled to realize regional heating and ice removal. In the invention, the icing sensing layer preferably comprises a driving end and a receiving end, and is preferably manufactured through 3D printing or spraying and other processes; in the icing test process, a fixed voltage (0.5-1.5V) is applied to the driving end, the receiving end is at zero voltage, the surface icing can cause the change of impedance between the driving end and the receiving end, and the icing state of the surface can be identified through the detection of the impedance. The structure of the array unit in the icing sensing layer is schematically shown in fig. 1.
In the invention, the icing sensing layer contains a conductive circuit; the shape of the conductive circuit is designed according to the array mode of the heating/temperature-sensitive layer, and only the array units of the icing sensing layer can be connected. In the present invention, the conductive circuit is preferably printed from a conductive metal paste. In the present invention, the conductive metal paste is preferably a conductive silver paste or a conductive copper paste, more preferably a conductive silver paste. In the present invention, the printing is preferably inkjet printing or 3D printing.
According to the invention, the icing sensing layer can test different tolerance gaps such as the thickness of ice in the surface area, the porosity of the ice layer, the ice-water mixture and the like, so that ice accumulation detection is realized.
Taking the array units as squares, the number of the array units is 12 as an example, the structural schematic diagram of the flexible film is shown in fig. 2, wherein the upper diagram is a plane structural schematic diagram, the lower diagram is a longitudinal section structural schematic diagram, 7 is a flexible substrate, 8-1 is a conductive circuit in a heating/temperature-sensitive layer, 8-2 is a mixture of polymer and carbon-based conductive filler in the heating/temperature-sensitive layer, 9 is an insulating layer, 10-1 is a conductive circuit in an icing sensing layer, and 10-2 is a mixture of carbon nano material and polymer in the icing sensing layer.
The invention also provides a preparation method of the flexible film, which comprises the following steps:
printing a heating/temperature-sensitive conducting circuit on the surface of the flexible substrate, and then preparing an array-distributed heating/temperature-sensitive layer;
preparing an insulating layer on the surface of the heating/temperature-sensitive layer;
and preparing an array-distributed icing sensing layer after the icing sensing conductive circuit is printed on the surface of the insulating layer.
According to the invention, the heating/temperature-sensitive conductive circuit is printed on the surface of the flexible substrate, and then the heating/temperature-sensitive layer distributed in an array is prepared. In the present invention, the printing is preferably inkjet printing or 3D printing. In the invention, the mode of preparing the array-distributed heating/temperature-sensitive layer is preferably to print by taking the material of the heating/temperature-sensitive layer as a raw material, and the printing is preferably 3D printing.
After the heating/temperature-sensitive layer is obtained, an insulating layer is prepared on the surface of the heating/temperature-sensitive layer. In the present invention, the insulating layer is preferably prepared by spin coating or spray coating, more preferably spray coating.
After the insulating layer is obtained, the icing sensing layer distributed in an array is prepared after the icing sensing conductive circuit is printed on the surface of the insulating layer. In the invention, the mode of preparing the icing sensing layers distributed in the array is preferably to print by taking the material of the insulating layer as a raw material, and the printing is preferably 3D printing.
Taking array units as squares, the number of the array units is 4, the array units in the icing sensing layer are comb teeth type, and fig. 3 is a schematic flow chart for preparing the flexible film; specifically, a heating/temperature-sensitive layer material is printed after a heating/temperature-sensitive layer conductive circuit is printed on the surface of a flexible substrate; preparing an insulating layer on the surface of the heating/temperature-sensitive layer, printing a conductive circuit of the icing sensing layer on the surface of the insulating layer, and printing a material of the icing sensing layer on the surface of the conductive circuit of the icing sensing layer.
The invention also provides an application of the flexible film in the ice prevention and removal system or the flexible film prepared by the preparation method in the technical scheme.
The invention also provides an ice prevention and removal system, which comprises a flexible film 1, a temperature detection module 2 connected with a conductive circuit in a heating/temperature-sensitive layer in the flexible film 1, a relay 3 connected with the conductive circuit in the heating/temperature-sensitive layer in the flexible film 1, a power supply 4 connected with the relay 3, an icing detection module 5 connected with the conductive circuit in an icing sensing layer in the flexible film 1, and a signal processing module 6 respectively connected with the temperature detection module 2 and the icing detection module 5, wherein the signal processing module 6 is in signal connection with the relay 3;
the flexible film 1 is the flexible film according to the technical scheme or the flexible film prepared by the preparation method according to the technical scheme.
In the invention, the temperature detection module 2 transmits the temperature detected by the heating/temperature sensitive layer in the flexible film 1 to the signal processing module 6; the icing detection module 5 also transmits the icing condition detected by the icing sensing layer in the flexible film 1 to the signal processing module 6; the signal processing module 6 will heat up and remove ice by combining the temperature and ice conditions to control the switch of the relay 3.
In the invention, the relay 3 controls the heating switch, when heating is needed, the signal processing module controls the relay 3 to be closed to open the heating mode, and when heating is not needed, the signal processing module controls the relay 3 to be opened to stop heating.
According to the invention, through collecting the icing signals, the heating/temperature-sensitive layer is controlled by the controller (relay 3), so that accurate fixed-point deicing of the icing region is realized, the real-time temperature of the heating layer is detected through the temperature signals, and the on-off of the heating layer is controlled by the controller, so that damage caused by overhigh temperature of the heating layer is prevented; the deicing system provided by the invention realizes the coupling of icing/temperature detection and heating deicing functions, and achieves the aims of low energy consumption and accurate fixed-point deicing. The deicing system provided by the invention has higher efficiency and safety.
Fig. 4 is a schematic structural diagram of an ice control system, wherein 1 is a flexible film, 2 is a temperature detection module, 3 is a relay, 4 is a power supply, 5 is an icing detection module, and 6 is a signal processing module.
The technical solutions provided by the present invention are described in detail below in conjunction with examples for further illustrating the present invention, but they should not be construed as limiting the scope of the present invention.
Example 1
Preparing a flexible film according to the procedure of fig. 3;
taking a polyimide film with the thickness of 0.1mm as a flexible substrate, and performing ink-jet printing on the surface of the polyimide film in an array mode according to FIG. 3 to form a heating/temperature-sensitive conductive circuit; 3D printing on the surface of the heating/temperature-sensitive conducting circuit to form a heating/temperature-sensitive layer with the thickness of 80 mu m; the heating/temperature-sensitive layer is made of conductive filler mixture of epoxy resin and graphene in a mass ratio of 8:100;
preparing an insulating layer with the thickness of 50 mu m on the surface of the heating/temperature-sensitive layer in a spin coating mode; the insulating layer is made of polyurethane;
forming a icing sensing conductive circuit by ink-jet printing conductive silver paste on the surface of the insulating layer in an array mode shown in fig. 3; 3D printing is performed on the surface of the icing sensing conductive circuit to form an icing sensing layer with the thickness of 60 mu m, so as to obtain a flexible film; the material of the icing sensing layer is a mixture of polyurethane and graphene with the mass ratio of 100:10, and the structure of the icing sensing layer is circular.
Example 2
Assembling the de-icing system according to fig. 4;
connecting a conductive circuit in a heating/temperature-sensitive layer in the flexible film 1 prepared in the embodiment 1 with a temperature detection module 2; meanwhile, a conductive circuit in a heating/temperature-sensitive layer in the flexible film 1 is connected with the relay 3, the relay 3 is connected with the power supply 4, a conductive circuit in an icing sensing layer in the flexible film 1 is connected with the icing detection module 5, the temperature detection module 2 and the icing detection module 5 are connected with the signal processing module 6, and the signal processing module 6 is connected with the relay 3 through a signal to obtain the icing-removing and preventing system.
The flexible film is applied to an anti-icing and deicing system, can monitor the surface temperature and icing condition of equipment in real time, monitors the film temperature and icing condition through a control system, accurately controls the on-off of a heating layer through a relay, and reduces energy consumption on the premise of ensuring good anti-icing and deicing conditions so as to meet the high-efficiency and energy-saving anti-icing and deicing requirements.
Although the foregoing embodiments have been described in some, but not all, embodiments of the invention, it should be understood that other embodiments may be devised in accordance with the present embodiments without departing from the spirit and scope of the invention.
Claims (10)
1. The flexible film is characterized by comprising a flexible substrate, heating/Wen Minceng distributed on the surface of the flexible substrate in an array manner, an insulating layer covering the surface of the heating/temperature-sensitive layer and an icing sensing layer distributed on the surface of the insulating layer in an array manner; the array distribution mode of the heating/temperature-sensitive layer is consistent with the array distribution mode of the icing sensing layer;
the heating/temperature-sensitive layer contains a conductive circuit;
the icing sensing layer contains a conductive circuit.
2. The flexible film of claim 1, wherein the flexible substrate is a non-conductive polymeric material;
the thickness of the flexible substrate is 0.5mm or less.
3. The flexible film of claim 2, wherein the non-conductive polymeric material is polyimide, polydimethylsiloxane, or polyester.
4. The flexible film of claim 1, wherein the heating/temperature sensitive layer is a mixture of a polymer and a carbon-based conductive filler;
the polymer comprises one or more of epoxy resin, polyurethane and acrylic resin;
the carbon-based conductive filler comprises one or more of graphene, carbon nanotubes and graphite powder;
the thickness of the heating/temperature-sensitive layer is 50-200 mu m.
5. The flexible film according to claim 1, wherein a material of the insulating layer is an insulating resin;
the thickness of the insulating layer is 30-100 mu m.
6. The flexible film of claim 1, wherein the material of the icing sensing layer is a carbon nanomaterial and polymer blend; the carbon nanomaterial is one or more of carbon nanotubes, graphene and graphite powder; the polymer is one or more of high-density polyethylene, polyimide, epoxy resin, polyurethane and phenolic resin;
any array unit in the icing sensing layer is comb-tooth-shaped, annular or square in shape;
the thickness of the icing sensing layer is 10-60 mu m.
7. The flexible film of claim 1, wherein the conductive circuitry in the heating/Wen Minceng and icing sensing layers are printed separately from conductive metal paste.
8. A method of producing the flexible film according to any one of claims 1 to 7, comprising the steps of:
printing a heating/temperature-sensitive conducting circuit on the surface of the flexible substrate, and then preparing an array-distributed heating/temperature-sensitive layer;
preparing an insulating layer on the surface of the heating/temperature-sensitive layer;
and preparing an array-distributed icing sensing layer after the icing sensing conductive circuit is printed on the surface of the insulating layer.
9. Use of the flexible film according to any one of claims 1 to 7 or the flexible film produced by the production method according to claim 8 in an ice control system.
10. The ice prevention and removal system is characterized by comprising a flexible film (1), a temperature detection module (2) connected with a conductive circuit in a heating/temperature-sensitive layer in the flexible film (1), a relay (3) connected with the conductive circuit in the heating/temperature-sensitive layer in the flexible film (1), a power supply (4) connected with the relay (3), an icing detection module (5) connected with the conductive circuit in an icing sensing layer in the flexible film (1) and a signal processing module (6) respectively connected with the temperature detection module (2) and the icing detection module (5), wherein the signal processing module (6) is in signal connection with the relay (3);
the flexible film (1) is the flexible film according to any one of claims 1 to 7 or the flexible film prepared by the preparation method according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311759867.0A CN117545116A (en) | 2023-12-20 | 2023-12-20 | Flexible film, preparation method and application thereof, and ice control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311759867.0A CN117545116A (en) | 2023-12-20 | 2023-12-20 | Flexible film, preparation method and application thereof, and ice control system |
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| Publication Number | Publication Date |
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| CN117545116A true CN117545116A (en) | 2024-02-09 |
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|---|---|---|---|
| CN202311759867.0A Pending CN117545116A (en) | 2023-12-20 | 2023-12-20 | Flexible film, preparation method and application thereof, and ice control system |
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| Country | Link |
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| CN (1) | CN117545116A (en) |
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- 2023-12-20 CN CN202311759867.0A patent/CN117545116A/en active Pending
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