CN116647948A - Ice prevention and removal assembly and preparation method thereof - Google Patents
Ice prevention and removal assembly and preparation method thereof Download PDFInfo
- Publication number
- CN116647948A CN116647948A CN202310687062.3A CN202310687062A CN116647948A CN 116647948 A CN116647948 A CN 116647948A CN 202310687062 A CN202310687062 A CN 202310687062A CN 116647948 A CN116647948 A CN 116647948A
- Authority
- CN
- China
- Prior art keywords
- layer
- temperature
- electric heating
- insulating
- resistant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002265 prevention Effects 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 238000005485 electric heating Methods 0.000 claims abstract description 81
- 239000002131 composite material Substances 0.000 claims abstract description 53
- 239000011159 matrix material Substances 0.000 claims description 24
- 229920000642 polymer Polymers 0.000 claims description 24
- 239000000945 filler Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000003822 epoxy resin Substances 0.000 claims description 12
- 229920000647 polyepoxide Polymers 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000011231 conductive filler Substances 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000000839 emulsion Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000011324 bead Substances 0.000 claims description 6
- 238000004512 die casting Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 229910052582 BN Inorganic materials 0.000 claims description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 3
- 239000004962 Polyamide-imide Substances 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000002134 carbon nanofiber Substances 0.000 claims description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- 239000002041 carbon nanotube Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 239000003085 diluting agent Substances 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 238000010147 laser engraving Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 238000009832 plasma treatment Methods 0.000 claims description 3
- 229920002312 polyamide-imide Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000013464 silicone adhesive Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 238000010345 tape casting Methods 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention discloses a control ice component and a preparation method thereof, which relate to the technical field of control ice of composite materials and comprise the following steps: a composite material layer; a high temperature resistant flexible electric heating film built in the composite material layer; the high-temperature-resistant flexible electric heating film comprises a high-temperature-resistant insulating heat conducting layer, an electric heating layer and a high-temperature-resistant insulating heat insulating layer which are sequentially distributed along the direction gradually far away from the surface needing ice prevention and removal, wherein the electric heating layer is electrically connected with a power supply, and the power supply is arranged outside the ice prevention and removal assembly; the high-temperature resistant insulating heat conducting layer and the high-temperature resistant insulating heat insulating layer are tightly attached to the composite material layer, and the high-temperature resistant insulating heat conducting layer and the high-temperature resistant insulating heat insulating layer are tightly attached to the electric heating layer; and the temperature sensor is arranged between the high-temperature-resistant insulating layer and the electric heating layer and is used for acquiring the temperature of the electric heating layer in real time. The preparation method comprises the following steps: and co-curing and forming the composite material layer, the high-temperature-resistant flexible electric heating film and the temperature sensor. The invention improves the ice preventing and removing effect.
Description
Technical Field
The invention relates to the technical field of composite material deicing, in particular to a deicing component and a preparation method thereof.
Background
Icing on the surfaces of equipment such as aircrafts, wind turbine blades, radomes and the like can seriously influence the normal operation of the equipment. The aircraft icing can occur at the positions of wings, tail wings, the front edge of an air inlet channel, windshields and the like, the aerodynamic appearance can be seriously damaged, the aircraft icing can reduce the lift force of the aircraft, the flight resistance of the aircraft can be increased, the operation stability of the aircraft can be damaged, and the crash accident can be caused when the aircraft is seriously frozen; icing of the wind driven generator blades can influence aerodynamic characteristics of the blades, cause unbalanced load and increase vibration/fatigue load, reduce output power of a fan and even cause shutdown of a unit; icing of radomes and the like can affect electromagnetic transmission, affect structural stability of antennas and the like.
At present, the wing/rotor skin of an airplane is increasingly made of composite materials, and almost all the blade blades and the radome are made of the composite materials, so that the problem that ice removal on the surface of the composite materials is necessary to be solved is solved.
The traditional deicing technology comprises mechanical deicing, liquid deicing, thermal deicing and the like, wherein the most widely applied thermal deicing technology is thermal deicing technology, namely hot gas deicing technology and electrothermal deicing technology. However, the hot gas anti-icing method has higher temperature, can not be applied to composite materials, and greatly limits the application range; in the traditional electric heating deicing method, heating elements such as metal heating plates, heating wires and the like are mostly adopted, and the inside of a protection area (such as a wing skin and a fan blade) is built in, so that on one hand, the metal heating elements have the defect of poor fatigue resistance and are easy to fail in flight vibration, and the maintenance cost is high, and on the other hand, the composite material has very low heat transfer efficiency and very low response speed, so that the deicing and preventing energy consumption is high, the efficiency is low and the temperature gradient is large.
The newly developed electric heating deicing coating (film) is generally directly sprayed on the outer side of the composite material skin, has better fatigue resistance, and has better heat transfer efficiency and response speed than the traditional method for internally arranging an electric heating element; however, the coating is at the outermost layer and is impacted and damaged by sand, and the coating spraying construction process and the maintenance process need to occupy longer airplane duration.
Disclosure of Invention
The invention aims to provide a deicing component and a preparation method thereof, which are used for solving the problems of the prior art and improving deicing effect on the premise of reducing the damage probability of the heating deicing component.
In order to achieve the above object, the present invention provides the following solutions:
the present invention provides an ice control assembly comprising:
a composite layer having a surface that requires ice protection;
a high temperature resistant flexible electrically heated membrane built into the composite layer; the high-temperature-resistant flexible electric heating film comprises a high-temperature-resistant insulating heat conducting layer, an electric heating layer and a high-temperature-resistant insulating heat insulating layer which are sequentially distributed along the direction gradually away from the surface needing ice prevention and removal, wherein the electric heating layer is electrically connected with a power supply, and the power supply is arranged outside the ice prevention and removal assembly; the high-temperature resistant insulating heat conducting layer and the high-temperature resistant insulating heat insulating layer are tightly attached to the composite material layer, and the high-temperature resistant insulating heat conducting layer and the high-temperature resistant insulating heat insulating layer are tightly attached to the electric heating layer;
the temperature sensor is arranged between the high-temperature-resistant insulating heat-insulating layer and the electric heating layer and is used for acquiring the temperature of the electric heating layer in real time.
Preferably, the composite material layer is all or part of an aircraft skin, a wind driven generator blade skin or a radar radome.
Preferably, the composite material layer comprises a heat conducting outer layer and a bearing layer, and the surface needing ice protection and removal is positioned on the outer surface of the heat conducting outer layer; the heat conducting outer layer and the bearing layer are integrally formed, a cavity is formed between the heat conducting outer layer and the bearing layer, and the high-temperature-resistant flexible electric heating film is arranged in the cavity.
Preferably, a plurality of through holes are formed in the high-temperature-resistant flexible electric heating film, a connecting column is arranged in each through hole in a penetrating mode, one end of each connecting column is connected with the heat conducting outer layer, and the other end of each connecting column is connected with the bearing layer;
the through holes are round through holes, square through holes, diamond through holes or cross through holes.
Preferably, the connecting posts are formed by filling epoxy resin glue in the corresponding through holes; the heat conducting outer layer and the bearing layer comprise one or at least two layers of composite material prepreg, wherein the composite material prepreg is glass fiber-epoxy resin prepreg or carbon fiber-epoxy resin prepreg; the thickness of the heat conducting outer layer is less than or equal to 1mm, and the thickness of the bearing layer is more than or equal to 2mm.
Preferably, the temperature sensor is in signal connection with a control unit, and the control unit is used for adjusting the electric heating power of the electric heating layer according to the temperature signal of the electric heating layer acquired by the temperature sensor.
Preferably, the composite material layer, the high-temperature-resistant flexible electric heating film and the temperature sensor are connected together after being processed by a co-curing post-forming process.
Preferably, the electric heating layer comprises a conductive layer, two binding posts and two flexible electrodes respectively arranged at two ends of the conductive layer, the binding posts are in one-to-one correspondence with the flexible electrodes, one end of each binding post is electrically connected with the corresponding flexible electrode, and the other end of each binding post extends out of the composite material layer.
Preferably, the high-temperature resistant insulating layer is made of a high-temperature resistant polymer matrix and insulating and heat-insulating filler; the conductive layer is made of a high-temperature resistant polymer matrix and conductive filler; the high-temperature-resistant insulating heat-conducting layer is made of the high-temperature-resistant polymer matrix and insulating heat-conducting filler;
the high-temperature resistant polymer matrix is one or at least two of high-temperature resistant silicone adhesive, high-temperature resistant organic silicone rubber, high-temperature resistant polyurethane, polytetrafluoroethylene emulsion, polyimide emulsion and polyamideimide emulsion, the insulating and heat-insulating filler is hollow glass beads and/or hollow ceramic beads, and the insulating and heat-conducting filler is one or at least two of cubic boron nitride, aluminum oxide and aluminum nitride; the conductive filler is one or at least two of nano graphite, graphene, carbon nano tubes and carbon nano fibers; the flexible electrode is copper foil, copper net or silver plating cloth.
The invention also provides a preparation method of the ice prevention and removal assembly, which comprises the following steps:
(1) The high-temperature resistant insulating heat conducting layer is prepared by mixing insulating heat conducting filler with the mass ratio of 5-30% into a high-temperature resistant polymer matrix, uniformly mixing the insulating heat conducting filler to obtain a first mixed raw material, and spraying, knife coating or pouring the first mixed raw material into a mould;
(2) Electrically connecting the binding posts with the corresponding flexible electrodes;
(3) Fixing the two flexible electrodes on the surface of the high-temperature-resistant insulating heat conducting layer;
(4) Adding conductive filler with the mass ratio of 5-20% into a high-temperature resistant polymer matrix, adding a diluent for dilution, uniformly mixing to obtain a second mixed raw material, and preparing a conductive layer with two ends respectively connected with two flexible electrodes on the surface of the high-temperature resistant insulating heat conducting layer by using the second mixed raw material through a spraying, blade coating or die casting method;
(5) Welding a temperature sensor and a signal wire, and insulating and shielding the temperature sensor and the signal wire; then fixing the temperature sensor on the conductive layer;
(6) The high-temperature resistant polymer matrix is doped with insulating and heat-insulating filler with the mass ratio of 5-30%, and uniformly mixed to obtain a third mixed raw material, and the third mixed raw material is used for preparing the high-temperature resistant insulating and heat-insulating layer on the conductive layer and the flexible electrode by a spraying, blade coating or die casting method; obtaining a high-temperature-resistant flexible electric heating film;
(7) Preparing a plurality of through holes on the high-temperature-resistant flexible electric heating film through a laser engraving or stamping process;
(8) Activating the upper and lower surfaces of the high-temperature-resistant flexible electric heating film by adopting plasma treatment;
(9) At least two layers of composite material prepregs are adopted as bearing layers, and one layer or at least two layers of composite material prepregs are adopted as heat conduction outer layers; sequentially stacking the bearing layer, the high-temperature-resistant flexible electric heating film and the heat conducting outer layer from bottom to top, injecting epoxy resin glue into each through hole before stacking the heat conducting outer layer, stacking the heat conducting outer layer again, and enabling an electric heating film binding post and a temperature sensor signal wire to penetrate through the bearing layer normally; obtaining a combination body;
(10) And removing the internal air of the combination body by vacuumizing, and then carrying out heating, pressurizing, co-curing and forming treatment on the combination body to obtain the ice preventing and removing assembly.
Compared with the prior art, the invention has the following technical effects:
the deicing component and the preparation method thereof can improve the deicing effect on the premise of reducing the damage probability of the heating deicing component; meanwhile, the device has strong interchangeability and is simple to install, maintain and replace.
The high-temperature-resistant flexible heating film in the deicing component is arranged in the composite material layer, so that heat can be quickly conducted to the surface to be deicing through the high-temperature-resistant insulating heat conducting layer; and the conductive layer in the high-temperature-resistant flexible heating film is made of a high-temperature-resistant polymer matrix and conductive filler, so that the high-temperature-resistant flexible heating film has strong fatigue resistance and long service life.
The deicing component is suitable for preventing and removing ice on the surfaces of composite material structures such as wings, tail wings, air inlet lips, helicopter rotors and the like of various fixed-wing airplanes and wind driven generator blades, radar radomes and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of an ice control assembly according to the present invention;
FIG. 2 is a flowchart of a method of producing an ice control assembly according to the present invention;
wherein, 1, high temperature resistant flexible electric heating film; 11. a high temperature resistant insulating layer; 12. a flexible electrode; 13. a conductive layer; 14. a high temperature resistant insulating heat conducting layer; 2. a composite material layer; 21. a thermally conductive outer layer; 22. a connecting column; 23. a bearing layer; 3. a temperature sensor; 4. binding posts; 5. and a signal line.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a control ice component and a preparation method thereof, which are used for solving the problems in the prior art and improving the control ice effect on the premise of reducing the damage probability of the heating control ice component; meanwhile, the device has strong interchangeability and is simple to install, maintain and replace.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1, the present embodiment provides an ice control assembly comprising a composite material layer 2, a high temperature resistant flexible electric heating film 1 built into the composite material layer 2, and a temperature sensor 3 built into the composite material layer 2.
The composite layer 2 has a surface that needs to be ice-proof; the composite material layer 2 can be used as an aircraft skin, a wind driven generator blade skin, a radar radome or the like in practical application.
In this embodiment, the composite material layer 2 includes a heat conductive outer layer 21 and a bearing layer 23, and the surface to be deicing-preventing is located on the outer surface of the heat conductive outer layer 21; the heat conducting outer layer 21 and the bearing layer 23 are integrally formed, a cavity is formed between the heat conducting outer layer 21 and the bearing layer 23, and the high-temperature-resistant flexible electric heating film 1 is arranged in the cavity. Both the heat conductive outer layer 21 and the bearing layer 23 comprise one or at least two layers of composite prepreg, wherein the composite prepreg is glass fiber-epoxy resin prepreg or carbon fiber-epoxy resin prepreg; the thickness of the heat conducting outer layer 21 is less than or equal to 1mm, and the thickness of the bearing layer 23 is more than or equal to 2mm.
The high-temperature-resistant flexible electric heating film 1 is used as a heating element and is arranged in the cavity to provide heat for the surface of the composite material layer 2 needing ice prevention and removal so as to achieve the ice prevention and removal effect.
In this embodiment, the high temperature resistant flexible electric heating film 1 includes a high temperature resistant insulating heat conducting layer 14, an electric heating layer and a high temperature resistant insulating heat insulating layer 11 which are sequentially distributed along a direction gradually far away from a surface to be ice-protected, the electric heating layer is electrically connected with a power supply, and the power supply is arranged outside the ice-protected component; the high-temperature-resistant insulating heat conducting layer 14 is tightly attached to the heat conducting outer layer 21, the high-temperature-resistant insulating heat insulating layer 11 is tightly attached to the bearing layer 23, and the high-temperature-resistant insulating heat conducting layer 14 and the high-temperature-resistant insulating heat insulating layer 11 are tightly attached to the electric heating layer.
The electric heating layer comprises a conductive layer 13, two binding posts 4 and two flexible electrodes 12 respectively arranged at two ends of the conductive layer 13, the binding posts 4 are in one-to-one correspondence with the flexible electrodes 12, one end of each binding post 4 is electrically connected with the corresponding flexible electrode 12, and the other end of each binding post extends out of the composite material layer 2.
The high-temperature resistant insulating layer 11 is made of a high-temperature resistant polymer matrix and insulating and heat-insulating filler; the conductive layer 13 is made of a high-temperature resistant polymer matrix and conductive filler; the high-temperature resistant insulating heat conducting layer 14 is made of a high-temperature resistant polymer matrix and insulating heat conducting filler;
the high-temperature resistant polymer matrix is one or at least two of high-temperature resistant silicone adhesive, high-temperature resistant organic silicone rubber, high-temperature resistant polyurethane, polytetrafluoroethylene emulsion, polyimide emulsion and polyamide-imide emulsion, the insulating and heat-insulating filler is hollow glass beads and/or hollow ceramic beads, and the insulating and heat-conducting filler is one or at least two of cubic boron nitride, aluminum oxide and aluminum nitride; the conductive filler is one or at least two of nano graphite, carbon nano tube and carbon nano fiber; the flexible electrode 12 is copper foil, a copper mesh or silver plated cloth.
The temperature sensor 3 is arranged between the high-temperature-resistant insulating layer 11 and the electric heating layer, and the temperature sensor 3 is used for acquiring the temperature of the electric heating layer in real time. The temperature sensor 3 is in signal connection with a control unit through a signal line 5, the signal line 5 penetrates through the bearing layer 23, and the control unit is used for adjusting the electric heating power of the electric heating layer according to the temperature signal of the electric heating layer acquired by the temperature sensor 3.
It should be noted that, the high temperature resistant flexible electric heating film 1 is provided with a plurality of through holes, and each through hole is penetrated with a connecting column 22; the connecting columns 22 are formed by filling epoxy resin glue in the corresponding through holes, one end of each connecting column 22 is connected with the heat conducting outer layer 21, and the other end is connected with the bearing layer 23; the through holes are round through holes, square through holes, diamond through holes or cross through holes and the like; the through holes are used for arranging the connecting columns 22 on one hand and improving the electromagnetic wave-transmitting performance of the high-temperature-resistant flexible electric heating film 1 on the other hand, so that the ice prevention and removal assembly is applicable to equipment surfaces with electromagnetic wave-transmitting requirements.
The composite material layer 2, the high-temperature-resistant flexible electric heating film 1 and the temperature sensor 3 are connected together after being processed by a co-curing and molding process.
The high-temperature-resistant flexible electric heating film 1 in the ice control assembly is arranged in the composite material layer 2, so that the ice control assembly is not easy to damage due to sand impact; the heat generated by the electric heating layer in the high-temperature-resistant flexible electric heating film 1 can be quickly conducted to the surface to be deiced through the high-temperature-resistant insulating heat conducting layer 14; and the conductive layer 13 in the high-temperature-resistant flexible electric heating film 1 is made of a high-temperature-resistant polymer matrix and conductive filler, and has strong fatigue resistance and long service life. The heating temperature of the electric heating layer can be intelligently controlled by an external control unit (particularly a PLC (programmable logic controller) or control equipment such as an upper computer) through adjusting the electric heating power of the electric heating layer in real time according to the temperature signal of the electric heating layer obtained by the temperature sensor 3.
Example two
As shown in fig. 1 and 2, the present embodiment provides a method for producing an ice control assembly according to the first embodiment, specifically including the steps of:
(1) The high-temperature resistant insulating heat conducting layer 14 is prepared by mixing insulating heat conducting filler with the mass ratio of 5-30% into a high-temperature resistant polymer matrix, uniformly mixing to obtain a first mixed raw material, and spraying, knife coating or pouring the first mixed raw material into a mould;
(2) One end of the binding post 4 is electrically connected with the corresponding flexible electrode 12 by adopting the modes of brazing, resistance welding and the like;
(3) Welding and fixing two flexible electrodes 12 at proper positions on the surface of the high-temperature-resistant insulating heat conducting layer 14; and the binding post 4 is far away from the high-temperature-resistant insulating heat conducting layer 14;
(4) Adding conductive filler with the mass ratio of 5-20% into a high-temperature resistant polymer matrix, adding a diluent for dilution, uniformly mixing to obtain a second mixed raw material, preparing a conductive layer 13 with two ends respectively connected with two flexible electrodes 12 on the surface of a high-temperature resistant insulating heat conducting layer 14 by using the second mixed raw material through a spraying, blade coating or die casting method, and thus obtaining an electric heating layer;
(5) Welding the temperature sensor 3 and the signal wire 5, and insulating and shielding the temperature sensor 3 and the signal wire 5; then fixing the temperature sensor 3 on the conductive layer 13;
(6) The high-temperature resistant polymer matrix is doped with insulating and heat-insulating filler with the mass ratio of 5-30%, and uniformly mixed to obtain a third mixed raw material, and the third mixed raw material is used for preparing the high-temperature resistant insulating and heat-insulating layer 11 on the electric heating layer by a spraying, blade coating or die casting method; obtaining a high-temperature-resistant flexible electric heating film 1;
(7) Preparing a plurality of through holes on the high-temperature-resistant flexible electric heating film 1 through a laser engraving or stamping process; it should be noted that the position of the through hole should avoid the temperature sensor 3 and the flexible electrode 12; insulating the notch of the through hole by adopting a high-temperature resistant polymer matrix;
(8) Activating the upper and lower surfaces of the high temperature resistant flexible electric heating film 1 by adopting plasma treatment; so as to enhance the adhesion performance of the high-temperature-resistant flexible electric heating film 1 and the composite material layer 2;
(9) At least two layers of composite prepreg are used as the bearing layer 23, and at least one layer of composite prepreg is used as the heat conducting outer layer 21; the bearing layer 23, the high-temperature-resistant flexible electric heating film 1 and the heat conducting outer layer 21 are sequentially stacked from bottom to top, and it should be noted that epoxy resin glue is injected into each through hole before stacking the heat conducting outer layer 21 to form a connecting column 22 for connecting the bearing layer 23 and the heat conducting outer layer 21, then the heat conducting outer layer 21 is stacked again, and the electric heating film binding post 4 and the signal wire 5 of the temperature sensor 3 penetrate through the bearing layer 23 normally; obtaining a combination body;
(10) And removing the internal air of the combination body by vacuumizing, and then performing heating and pressurizing co-curing forming treatment on the combination body to obtain the composite material ice preventing and removing assembly with the electric heating ice preventing and removing performance.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (10)
1. An ice control assembly, comprising:
a composite layer having a surface that requires ice protection;
a high temperature resistant flexible electrically heated membrane built into the composite layer; the high-temperature-resistant flexible electric heating film comprises a high-temperature-resistant insulating heat conducting layer, an electric heating layer and a high-temperature-resistant insulating heat insulating layer which are sequentially distributed along the direction gradually away from the surface needing ice prevention and removal, wherein the electric heating layer is electrically connected with a power supply, and the power supply is arranged outside the ice prevention and removal assembly; the high-temperature resistant insulating heat conducting layer and the high-temperature resistant insulating heat insulating layer are tightly attached to the composite material layer, and the high-temperature resistant insulating heat conducting layer and the high-temperature resistant insulating heat insulating layer are tightly attached to the electric heating layer;
the temperature sensor is arranged between the high-temperature-resistant insulating heat-insulating layer and the electric heating layer and is used for acquiring the temperature of the electric heating layer in real time.
2. The ice control assembly according to claim 1, wherein: the composite material layer is all or part of an aircraft skin, a wind driven generator blade skin or a radar radome.
3. The ice control assembly according to claim 1, wherein: the composite material layer comprises a heat conduction outer layer and a bearing layer, and the surface needing ice prevention and removal is positioned on the outer surface of the heat conduction outer layer; the heat conducting outer layer and the bearing layer are integrally formed, a cavity is formed between the heat conducting outer layer and the bearing layer, and the high-temperature-resistant flexible electric heating film is arranged in the cavity.
4. A control ice assembly according to claim 3, wherein: a plurality of through holes are formed in the high-temperature-resistant flexible electric heating film, a connecting column is arranged in each through hole in a penetrating mode, one end of each connecting column is connected with the heat conducting outer layer, and the other end of each connecting column is connected with the bearing layer;
the through holes are round through holes, square through holes, diamond through holes or cross through holes.
5. The ice control assembly according to claim 4, wherein: the connecting columns are formed by filling epoxy resin glue in the corresponding through holes; the heat conducting outer layer and the bearing layer comprise one or at least two layers of composite material prepreg, wherein the composite material prepreg is glass fiber-epoxy resin prepreg or carbon fiber-epoxy resin prepreg; the thickness of the heat conducting outer layer is less than or equal to 1mm, and the thickness of the bearing layer is more than or equal to 2mm.
6. The ice control assembly according to claim 1, wherein: the temperature sensor is in signal connection with the control unit, and the control unit is used for adjusting the electric heating power of the electric heating layer according to the temperature signal of the electric heating layer acquired by the temperature sensor.
7. The ice control assembly according to claim 1, wherein: and the composite material layer, the high-temperature-resistant flexible electric heating film and the temperature sensor are connected together after being treated by a co-curing and molding process.
8. The ice control assembly according to claim 1, wherein: the electric heating layer comprises a conductive layer, two binding posts and two flexible electrodes, wherein the flexible electrodes are respectively arranged at two ends of the conductive layer, the binding posts are in one-to-one correspondence with the flexible electrodes, one end of each binding post is electrically connected with the corresponding flexible electrode, and the other end of each binding post extends out of the composite material layer.
9. The ice control assembly according to claim 8, wherein: the high-temperature resistant insulating layer is made of a high-temperature resistant polymer matrix and insulating and heat-insulating filler; the conductive layer is made of a high-temperature resistant polymer matrix and conductive filler; the high-temperature-resistant insulating heat-conducting layer is made of the high-temperature-resistant polymer matrix and insulating heat-conducting filler;
the high-temperature resistant polymer matrix is one or at least two of high-temperature resistant silicone adhesive, high-temperature resistant organic silicone rubber, high-temperature resistant polyurethane, polytetrafluoroethylene emulsion, polyimide emulsion and polyamideimide emulsion, the insulating and heat-insulating filler is hollow glass beads and/or hollow ceramic beads, and the insulating and heat-conducting filler is one or at least two of cubic boron nitride, aluminum oxide and aluminum nitride; the conductive filler is one or at least two of nano graphite, graphene, carbon nano tubes and carbon nano fibers; the flexible electrode is copper foil, copper net or silver plating cloth.
10. A method for producing an ice control assembly, comprising the steps of:
(1) The high-temperature resistant insulating heat conducting layer is prepared by mixing insulating heat conducting filler with the mass ratio of 5-30% into a high-temperature resistant polymer matrix, uniformly mixing the insulating heat conducting filler to obtain a first mixed raw material, and spraying, knife coating or pouring the first mixed raw material into a mould;
(2) Electrically connecting the binding posts with the corresponding flexible electrodes;
(3) Fixing the two flexible electrodes on the surface of the high-temperature-resistant insulating heat conducting layer;
(4) Adding conductive filler with the mass ratio of 5-20% into a high-temperature resistant polymer matrix, adding a diluent for dilution, uniformly mixing to obtain a second mixed raw material, and preparing a conductive layer with two ends respectively connected with two flexible electrodes on the surface of the high-temperature resistant insulating heat conducting layer by using the second mixed raw material through a spraying, blade coating or die casting method;
(5) Welding a temperature sensor and a signal wire, and insulating and shielding the temperature sensor and the signal wire; then fixing the temperature sensor on the conductive layer;
(6) The high-temperature resistant polymer matrix is doped with insulating and heat-insulating filler with the mass ratio of 5-30%, and uniformly mixed to obtain a third mixed raw material, and the third mixed raw material is used for preparing the high-temperature resistant insulating and heat-insulating layer on the conductive layer and the flexible electrode by a spraying, blade coating or die casting method; obtaining a high-temperature-resistant flexible electric heating film;
(7) Preparing a plurality of through holes on the high-temperature-resistant flexible electric heating film through a laser engraving or stamping process;
(8) Activating the upper and lower surfaces of the high-temperature-resistant flexible electric heating film by adopting plasma treatment;
(9) At least two layers of composite material prepregs are adopted as bearing layers, and one layer or at least two layers of composite material prepregs are adopted as heat conduction outer layers; sequentially stacking the bearing layer, the high-temperature-resistant flexible electric heating film and the heat conducting outer layer from bottom to top, injecting epoxy resin glue into each through hole before stacking the heat conducting outer layer, stacking the heat conducting outer layer again, and enabling an electric heating film binding post and a temperature sensor signal wire to penetrate through the bearing layer normally; obtaining a combination body;
(10) And removing the internal air of the assembly by vacuumizing, and then performing heating, pressurizing, co-curing and forming treatment to obtain the ice preventing and removing assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310687062.3A CN116647948A (en) | 2023-06-12 | 2023-06-12 | Ice prevention and removal assembly and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310687062.3A CN116647948A (en) | 2023-06-12 | 2023-06-12 | Ice prevention and removal assembly and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116647948A true CN116647948A (en) | 2023-08-25 |
Family
ID=87618699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310687062.3A Pending CN116647948A (en) | 2023-06-12 | 2023-06-12 | Ice prevention and removal assembly and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116647948A (en) |
-
2023
- 2023-06-12 CN CN202310687062.3A patent/CN116647948A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110856290A (en) | Graphene composite membrane for preventing and removing ice, composite material structural member and preparation method | |
| CN105673361B (en) | Ice-melt heating structure of blade of wind-driven generator and preparation method thereof | |
| CN112009694B (en) | Preparation method of electric heating anti-icing coating for three-dimensional complex curved surface | |
| US6610969B2 (en) | Compact microwave system for de-icing and for preventing icing of the outer surfaces of hollow or shell structures which are exposed to meterological influences | |
| CN107084100B (en) | Wind power blade heating and ice melting system based on graphene heating film and manufacturing method of blade | |
| CN111284679B (en) | Unmanned aerial vehicle deformation wing structure based on memory alloy negative Poisson's ratio cell cube | |
| US20120292439A1 (en) | Article with de-icing/anti-icing function | |
| CN109733017B (en) | Composite material containing graphene/resin/carbon fiber modified electrothermal layer, preparation method and application thereof | |
| US6207940B1 (en) | Microwave de-icing system for aircrafts | |
| CN110816854B (en) | Composite braided electric heating film for preventing and removing ice and electric heating structure | |
| CN205265933U (en) | Multilayer structure's anti -icing component of electrical heating | |
| CN113086156B (en) | Airfoil leading edge with deicing function and preparation method of airfoil leading edge | |
| JP2013178999A (en) | Fiber-reinforced plastic heat generator and wind power generation apparatus equipped with heat generator | |
| CN112757717A (en) | Directional heat conduction electric heating device and preparation method | |
| CN114656857A (en) | Anti-icing material with electrothermal photothermal conversion capability and wear-resistant super-hydrophobic multiple properties as well as preparation method and application thereof | |
| CN109334998A (en) | A kind of gradient distribution formula plasma de-icing device and method | |
| GB2574184A (en) | Ice removal system | |
| CN116647948A (en) | Ice prevention and removal assembly and preparation method thereof | |
| CN107117318B (en) | A kind of preparation method of anti-/ deicing composite material functional unit | |
| CN112722286B (en) | Electric heating hydrophobic anti-icing device and preparation method thereof | |
| CN107117319B (en) | One kind preventing/deicing composite material by multilayer structure | |
| CN116061458A (en) | Method for improving bonding strength of electric heating sheet and composite material | |
| CN116061459A (en) | Method for paving electric heating sheet on quadric surface | |
| CN110481795B (en) | Graphene composite material helicopter rotor wing deicing and preventing device and manufacturing method | |
| CN110868768A (en) | Metal fiber reinforced graphite composite membrane for preventing and removing ice, preparation method and structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |