CN115052378A - Electrothermal composite material, electrothermal band and electrothermal film - Google Patents
Electrothermal composite material, electrothermal band and electrothermal film Download PDFInfo
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- CN115052378A CN115052378A CN202210642047.2A CN202210642047A CN115052378A CN 115052378 A CN115052378 A CN 115052378A CN 202210642047 A CN202210642047 A CN 202210642047A CN 115052378 A CN115052378 A CN 115052378A
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Classifications
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- 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
- H05B3/10—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
- H05B3/14—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 the material being non-metallic
- H05B3/145—Carbon only, e.g. carbon black, graphite
-
- 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
- H05B3/20—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
- H05B3/36—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heating conductor embedded in insulating material
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- Resistance Heating (AREA)
Abstract
The invention provides an electrothermal composite material, an electrothermal belt and an electrothermal film, wherein the electrothermal composite material comprises: the amorphous alloy substrate is a metal thin strip with the thickness of less than 0.05mm, the resistivity of more than 1.0 mu omega m and the tensile strength of more than 1500 MPa; the far infrared radiation coating is coated on the surface of the amorphous alloy matrix, and the resistivity of the amorphous alloy matrix is smaller than that of the far infrared radiation coating. By applying the technical scheme of the invention, the electric heating composite material is adopted for heating, so that the far infrared radiation emissivity of the metal heating body can be improved, and the normal emissivity can reach more than 0.8, thereby ensuring good heating effect. In addition, the amorphous alloy matrix has the advantages of thin thickness, large resistivity and high tensile strength, so that the final electrothermal composite material has stable performance and is durable. Solves the problems that the electric heating material in the prior art can not have good heating effect, stable performance and durability.
Description
Technical Field
The invention relates to the field of electric heating materials, in particular to an electric heating composite material, an electric heating belt and an electric heating film.
Background
The common flexible electric heating material mainly comprises a metal electric heating wire and a carbon-based coating electric heating film. The metal heating wire has the advantages of stable performance, good durability and the defects of small heating area and low far infrared heat radiation efficiency. The carbon-based coating electrothermal film is an electrothermal film formed by coating carbon-based slurry on a heat-resistant insulating base body in a printing mode, such as a PET graphene electrothermal film, and has the advantages of large heating area, high far infrared heat radiation efficiency and the defects of low tensile strength, poor durability and the like of the materials. How to obtain a flexible electric heating material which has the advantages of large heating area, high far infrared heat radiation efficiency, stable performance and durability is the problem to be solved in the field.
Disclosure of Invention
The invention mainly aims to provide an electrothermal composite material, an electrothermal belt and an electrothermal film, and aims to solve the problems that the electrothermal material in the prior art cannot have large heating area, high far infrared thermal radiation efficiency, stable performance and durability.
In order to achieve the above object, according to one aspect of the present invention, there is provided an electrothermal composite comprising: the amorphous alloy substrate is a metal thin strip with the thickness of less than 0.05mm, the resistivity of more than 1.0 mu omega m and the tensile strength of more than 1500 MPa; the far infrared radiation coating is coated on the surface of the amorphous alloy matrix, wherein the resistivity of the amorphous alloy matrix is smaller than that of the far infrared radiation coating, and the far infrared radiation coating can radiate far infrared rays with the peak wavelength range of 4-16 mu m to the outside after being heated.
In one embodiment, the amorphous alloy matrix is an iron-based amorphous alloy or a nickel-based amorphous alloy.
In one embodiment, the far infrared radiation coating layer is a carbon-based material or an inorganic metal compound.
In one embodiment, the far infrared radiation coating includes at least one of graphene, carbon fiber, carbon crystal; alternatively, the far infrared radiation coating layer includes at least one of metal carbide, metal nitride, metal boride, and metal oxide.
In one embodiment, the far infrared radiation coating is coated on one surface or both opposite surfaces of the amorphous alloy substrate.
In one embodiment, the electrothermal composite further comprises: the heat insulating layer, far infrared radiation coating and heat insulating layer coat on two opposite surfaces of the amorphous alloy matrix respectively.
In one embodiment, the electrothermal composite further comprises: the first adhesive sticker layer is coated on the outer surface of the heat insulation layer.
In one embodiment, the electrothermal composite further comprises: the first non-drying adhesive layer, the far infrared radiation coating layer and the first non-drying adhesive layer are respectively coated on two opposite surfaces of the amorphous alloy substrate.
According to another aspect of the present invention, there is provided an electric heating belt, including: a heat-resistant insulating sheath having a receiving passage extending in a length direction of the heat-resistant insulating sheath, the heat-resistant insulating sheath being made of an insulating material; and the heating belt is arranged in the accommodating channel and is made of the electric heating composite material.
In one embodiment, the heat resistant insulating sheath is made of at least one material of polyethylene, polyimide, poly terephthalic acid, and silicone.
In one embodiment, the electric heating belt further comprises: and the second self-adhesive layer is coated on one outer surface of the heat-resistant insulating sleeve.
According to a final aspect of the present invention, there is provided an electrothermal film comprising: two heat-resistant insulating films arranged oppositely, the heat-resistant insulating films being made of an insulating material; the heating band is clamped between two heat-resistant insulating films, the heating band is made of the electrothermal composite material, and the two heat-resistant insulating films are jointed to form an integrated electrothermal film.
In one embodiment, the electrothermal film comprises at least one heating area, and the heating area is formed by continuously bending a heating belt in the heat-resistant insulating film.
In one embodiment, the heating band is a plurality of bands, and the electric heating film further includes: the conductive foil is used for electrically connecting the heating strips end to form a series circuit so as to form a heating area, and the conductive foil is made of copper foil or aluminum foil.
In one embodiment, the heat-resistant insulating film is made of at least one material of polyethylene, polyimide, polyethylene terephthalate, and silicone.
By applying the technical scheme of the invention, the amorphous alloy matrix is electrified, the joule heat generated by the current heats the far infrared radiation coating, and the heated far infrared radiation coating can radiate far infrared rays with the peak wavelength range of 4-16 mu m outwards. Therefore, the electrothermal composite material is adopted for heating, the far infrared radiation emissivity of the amorphous alloy matrix can be improved, and the normal emissivity reaches over 0.8, so that the heating effect is good. In addition, by applying the technical scheme of the invention, the amorphous alloy matrix has the advantages of thin thickness, large resistivity and high tensile strength, so that the finally obtained electrothermal composite material has the following four advantages: 1. the thickness is thin; 2. the electric heating composite material has good flexibility and high tensile strength, so that the electric heating composite material can be applied to more products with higher requirements on flexibility and is not easy to damage; 3. the electric heating composite material has high resistivity, and can generate more joule heat after being electrified so as to excite the far infrared radiation coating to radiate far infrared rays; 4. the corrosion resistance is good, so that the service life of the electric heating composite material is long. In addition, by applying the technical scheme of the invention, the resistivity of the amorphous alloy matrix is required to be ensured to be smaller than that of the far infrared radiation coating, so that the amorphous alloy matrix is directly heated instead of the far infrared radiation coating after the electric heating composite material is electrified.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic cross-sectional view of a first embodiment of an electrothermal composite according to the present invention;
FIG. 2 shows a far infrared thermal radiation spectrum of the electrocaloric composite of FIG. 1 when heated to 50 ℃;
FIG. 3 shows a schematic cross-sectional view of a second embodiment of an electrothermal composite according to the present invention;
FIG. 4 shows a schematic cross-sectional view of a third embodiment of an electrothermal composite according to the present invention;
FIG. 5 is a schematic perspective view of a first embodiment of an electric heating belt according to the present invention;
FIG. 6 shows a schematic cross-sectional view of the ribbon heater of FIG. 5;
FIG. 7 is a schematic sectional view showing a second embodiment of the electric heating belt according to the present invention;
fig. 8 shows a schematic top view of an embodiment one of an electrothermal film according to the present invention;
fig. 9 shows a schematic top view of a second embodiment of an electrothermal film according to the present invention;
fig. 10 shows a schematic top view of a third embodiment of an electrothermal film according to the present invention; and
fig. 11 shows a schematic cross-sectional view of the electrothermal film of fig. 8.
Wherein the figures include the following reference numerals:
10. an amorphous alloy matrix; 20. a far infrared radiation coating; 30. a thermal insulation layer; 40. a heat-resistant insulating sleeve; 50. heating the tape; 60. a heat-resistant insulating film; 70. a first non-drying adhesive layer; 80. a conductive foil; 90. and a second non-drying adhesive layer.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances for describing embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The inventors have found after long-term studies that in an electrothermal film having a heating coat formed by applying a carbon-based paste on a heat-resistant insulating substrate by printing, a binder is generally contained and the thickness of the coating is difficult to be uniform. The problems of aging and uneven heating can be caused when the electric heating film is heated by directly passing current through the coating, and the resistance can be gradually changed to cause the performance attenuation phenomenon. Once this occurs, the performance mentioned in the background art is unstable and not durable.
In order to solve the problems, the inventor proposes that the metal electric heating material produced by the metallurgical process has the advantages of uniform material quality, stable structure and no performance attenuation caused by repeated heating. If the coating material with high far infrared heat radiation efficiency is coated on the metal base material, the metal base material is electrified to generate joule heat, and the indirect heating of the coating material can avoid the aging problem caused by the change of the resistance of the coating, thereby solving the problems of unstable performance and low durability. However, how to realize good flexibility, thin thickness and high strength of the electric heating composite material under the condition of ensuring stable performance and durability becomes a new difficulty.
In order to solve the above problem, as shown in fig. 1, an electrothermal composite material according to a first embodiment includes: an amorphous alloy substrate 10 and a far infrared radiation coating 20. Wherein, the amorphous alloy matrix 10 is a metal thin strip with the thickness less than 0.05mm, the resistivity more than 1.0 mu omega m and the tensile strength more than 1500 MPa. The far infrared radiation coating 20 is coated on the surface of the amorphous alloy substrate 10, wherein the resistivity of the amorphous alloy substrate 10 is smaller than that of the far infrared radiation coating 20, and the electric current is applied to the amorphous alloy substrate 10 to generate joule heat, so that the far infrared radiation coating 20 can radiate far infrared rays with the peak wavelength range of 4-16 μm after being heated.
By applying the technical scheme of the first embodiment, the amorphous alloy substrate 10 is electrified, the joule heat generated by the current heats the far infrared radiation coating 20, and the heated far infrared radiation coating 20 can radiate the far infrared rays with the peak wavelength range of 4-16 μm outwards. Therefore, the electrothermal composite material is adopted for heating, so that the far infrared radiation emissivity of the amorphous alloy matrix can be improved, and the heating effect is good. In addition, by applying the technical scheme of the first embodiment, the amorphous alloy matrix 10 has a thin thickness, a large resistivity and a large tensile strength, so that the finally obtained electrothermal composite material has the following four advantages: 1. the thickness is thin; 2. the electric heating composite material has good flexibility and high tensile strength, so that the electric heating composite material can be applied to more products with higher requirements on flexibility and is not easy to damage; 3. the electrical resistivity is high, so that the electric heating composite material can generate more joule heat after being electrified so as to excite the far infrared radiation coating 20 to radiate far infrared rays; 4. the corrosion resistance is good, so that the service life of the electric heating composite material is long. In addition, by applying the technical solution of the first embodiment, it is also required to ensure that the resistivity of the amorphous alloy substrate 10 is smaller than that of the far infrared radiation coating 20, so that the electric heating composite material is directly heated by the amorphous alloy substrate 10 instead of the far infrared radiation coating 20 after being electrified.
It should be noted that, the amorphous alloy substrate 10 heats the far infrared radiation coating 20 by joule heat generated by the current, and the far infrared radiation coating 20 can externally radiate far infrared rays with a peak wavelength range of 4-16 μm, and the normal emissivity is greater than 0.8.
In the first embodiment, the amorphous alloy matrix 10 is a nickel-based amorphous alloy. Specifically, the nickel-based amorphous alloy has high resistivity and high tensile strength, so that on one hand, the electrothermal composite material can generate more Joule heat after being electrified; on the other hand, the electrothermal composite material can be applied to more products with higher requirements on flexibility and is not easy to damage. Of course, in other embodiments, the amorphous alloy matrix 10 may also be an iron-based amorphous alloy.
In the first embodiment, the far infrared radiation coating layer 20 is a carbon-based material. Preferably, in the first embodiment, the far infrared radiation coating 20 is preferably a mixture of graphene and graphite powder. The graphene and graphite powder are mixed into slurry by selecting proper glue solution, and the slurry is uniformly coated on the surface of the amorphous alloy matrix 10 to form the integrated far infrared heat radiation enhanced nickel-based amorphous alloy electric heating composite material. Of course, in other embodiments, the far infrared radiation coating 20 may also include at least one of carbon fibers and carbon crystals. Alternatively, in another embodiment, the far infrared radiation coating is an inorganic metal compound. The inorganic metal compound comprises at least one of metal carbide, metal nitride, metal boride and metal oxide.
As shown in fig. 1, in the first embodiment, a far infrared radiation coating layer 20 is coated on one surface of an amorphous alloy substrate 10. Of course, in other embodiments, the far infrared radiation coating layer may be coated on both opposite surfaces of the amorphous alloy substrate 10 according to the actual heating requirement (larger heating value).
Preferably, in the first embodiment, the thickness of the nickel-based amorphous alloy is 30 μm; the resistivity is more than 1.5 mu omega m; the tensile strength is more than 1500 MPa. FIG. 2 shows the far infrared thermal radiation spectrum of the Ni-based amorphous alloy electrothermal composite material heated to 50 deg.C, with peak wavelength range of 6-16 μm and normal emissivity of 0.9.
The electric heating composite material of the second embodiment is different from the electric heating composite material of the first embodiment in that the electric heating composite material is provided with a heat insulating layer, and specifically, as shown in fig. 3, in the second embodiment, the electric heating composite material may further include: the heat insulating layer 30, the far infrared radiation coating layer 20 and the heat insulating layer 30 are respectively coated on two opposite surfaces of the amorphous alloy substrate 10. The thermal insulation layer 30 can perform a thermal insulation function, so that more heat generated by the amorphous alloy matrix 10 is conducted to the far infrared radiation coating 20, and the directional heating effect of the electrothermal composite material is improved.
The difference between the electrothermal composite material of example three and the electrothermal composite material of example two is that the electrothermal composite material has a non-drying adhesive layer, specifically, as shown in fig. 4, in example three, the electrothermal composite material further comprises: a first non-drying adhesive layer 70, the first non-drying adhesive layer 70 being coated on the outer surface of the thermal insulation layer 30. The electrothermal composite material precoated with the first non-dry adhesive layer 70 can be directly adhered to various heat-resistant insulating base materials, so that convenience is provided for practical application.
In other embodiments not shown in the drawings, the electric heating composite material may not include a thermal insulation layer, and the far infrared radiation coating layer 20 and the first non-drying adhesive layer 70 are coated on the opposite surfaces of the amorphous alloy matrix 10, respectively. The structure can also enable the electric heating composite material to be directly pasted on various heat-resistant insulating base materials, and convenience is provided for practical application.
As shown in fig. 5 and 6, the present application also provides an electric heating belt, an embodiment of the electric heating belt according to the present application includes: a heat-resistant insulating sheath 40 and a heating tape 50. Wherein the heat-resistant insulating sheath 40 has a receiving passage extending in a length direction of the heat-resistant insulating sheath 40, and the heat-resistant insulating sheath 40 is made of an insulating material. The heating belt 50 is disposed in the accommodating passage, and the heating belt 50 is made of the material of the first embodiment of the electrothermal composite material. The electric heating composite material has the advantages of good heating effect, thin thickness, high resistivity, good corrosion resistance and the like, so the electric heating belt also has the advantages.
In the present embodiment, the heat-resistant insulating sheath 40 is made of a cross-linked polyethylene material. The cross-linked polyethylene is coated on the surface of the heating belt 50 in a hot extrusion molding mode to form an integrated far infrared heat radiation enhanced electric heating belt. The above structure makes the insulating effect and the heat-resistant effect of the heat-resistant insulating sheath 40 good, thereby enhancing the safety of the electric heating tape. Of course, in other embodiments not shown in the figures, the heat resistant insulating sleeve may also be made of at least one material of polyimide, poly terephthalic acid and silicone.
The difference between the electric heating tape of the second embodiment and the electric heating tape of the first embodiment is that the electric heating tape has a non-setting adhesive layer, specifically, as shown in fig. 7, in the second embodiment, the electric heating tape further includes: a second non-drying adhesive layer 90, the second non-drying adhesive layer 90 being coated on one outer surface of the heat-resistant insulating sheath 40. The electric heating tape pre-coated with the non-dry adhesive layer can be directly adhered to various heat-resistant base materials, and convenience is provided for practical application.
Of course, in other embodiments of the electric heating belt, the heating belt can also be made of the material of the second embodiment or the third embodiment of the electric heating composite material.
As shown in fig. 8 and 10, the present application also provides an electrothermal film, an embodiment of the electrothermal film according to the present application includes: two heat-resistant insulating films 60 and a heating belt 50 arranged oppositely. Wherein the heat-resistant insulating film 60 is made of an insulating material. The heating tape 50 is sandwiched between two heat-resistant insulating films 60, the heating tape 50 is made of the material of the first embodiment of the electrothermal composite material described above, and the two heat-resistant insulating films 60 are joined to constitute an integrated electrothermal film. The electrothermal composite material has the advantages of good heating effect, thin thickness, high resistivity, good corrosion resistance and the like, so the electrothermal film also has the advantages.
In the first embodiment, the heat-resistant insulating film 60 is made of polyethylene terephthalate. Specifically, the material of the heat-resistant insulating film 60 is polyethylene terephthalate (PET). The PET film coated with the hot melt adhesive is hot-pressed on two opposite surfaces of the heating belt 50 to form an integrated far infrared thermal radiation enhanced electric heating film. The processing mode is simple, and the processing efficiency is high. Of course, in other embodiments, the heat-resistant insulating film may be made of at least one material of polyethylene, polyimide, and silicone.
In the first embodiment, the electric heating film includes at least one heat generating region, and the heat generating region is formed by continuously bending a heating tape 50 in a heat-resistant insulating film 60. Specifically, as shown in fig. 8, in the first embodiment, a wide heating band 50 is formed in a zigzag shape to form a large-area heat generating region, and is sandwiched between two heat-resistant insulating films 60 and joined to form an integrated electric heating film.
The difference between the electric heating film of the second embodiment and the electric heating film of the first embodiment is only the way of forming the heating region, specifically, as shown in fig. 9, in the second embodiment, a narrow heating band 50 is continuously bent and laid in a serpentine shape. Specifically, the heating belt 50 includes a plurality of U-shaped bent sections and a connecting straight section connected between adjacent two U-shaped bent sections. The heating tape 50 forming a large-area heating region is sandwiched between two heat-resistant insulating films 60, and joined as an integrated electric heating film.
The electric heating film of the third embodiment is different from the electric heating film of the first embodiment only in a manner of forming a heat generating region, specifically, as shown in fig. 10, in the third embodiment, a plurality of heating bands 50 are provided, and the electric heating film further includes: the conductive foil 80 electrically connects the plurality of heating tapes 50 end to form a series circuit, and the heating tapes 50 constituting a large-area heating area are sandwiched between two heat-resistant insulating films 60 and joined into an integrated electric heating film.
Of course, in other embodiments, the heating belt can also be made of the material of the second embodiment or the third embodiment of the electrothermal composite material.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. An electrothermal composite, comprising:
the amorphous alloy substrate (10), the amorphous alloy substrate (10) is a metal thin strip with the thickness less than 0.05mm, the resistivity more than 1.0 mu omega m and the tensile strength more than 1500 MPa;
and the far infrared radiation coating (20) is coated on the surface of the amorphous alloy substrate (10), wherein the resistivity of the amorphous alloy substrate (10) is smaller than that of the far infrared radiation coating (20), and the far infrared radiation coating (20) can radiate far infrared rays with the peak wavelength range of 4-16 mu m to the outside after being heated.
2. An electrothermal composite according to claim 1, wherein the amorphous alloy matrix (10) is an iron-based amorphous alloy or a nickel-based amorphous alloy.
3. The electric heating composite material according to claim 1, wherein the far-infrared radiation coating layer (20) is a carbon-based material or an inorganic metal compound.
4. The electrothermal composite according to claim 1, wherein the far infrared radiation coating (20) comprises at least one of graphene, carbon fibers, carbon crystals; alternatively, the far infrared radiation coating (20) comprises at least one of a metal carbide, a metal nitride, a metal boride, a metal oxide.
5. The electric heating composite material according to claim 1, wherein the far infrared radiation coating (20) is coated on one surface or both opposite surfaces of the amorphous alloy matrix (10).
6. The electrothermal composite of claim 1, further comprising:
the far infrared radiation coating (20) and the heat insulation layer (30) are respectively coated on two opposite surfaces of the amorphous alloy substrate (10).
7. The electrothermal composite of claim 6, further comprising:
a first layer of non-drying glue (70), the first layer of non-drying glue (70) being coated on the outer surface of the thermal insulation layer (30).
8. The electrothermal composite of any one of claims 1 to 5, further comprising:
a first non-drying adhesive layer (70), wherein the far infrared radiation coating layer (20) and the first non-drying adhesive layer (70) are respectively coated on two opposite surfaces of the amorphous alloy matrix (10).
9. An electric heating tape, comprising:
a heat-resistant insulating sheath (40) having a receiving channel extending in a length direction of the heat-resistant insulating sheath (40), the heat-resistant insulating sheath (40) being made of an insulating material;
a heating belt (50) disposed within the containment channel, the heating belt (50) being made of the electrothermal composite material of any one of claims 1 to 8.
10. The electric heating belt according to claim 9, wherein the heat-resistant insulating sheath (40) is made of at least one material of polyethylene, polyimide, polyterephthalic acid and silicone.
11. The electric heating belt according to claim 9, further comprising:
a second layer of non-drying glue (90), said second layer of non-drying glue (90) being coated on one outer surface of said heat resistant insulating sleeve (40).
12. An electrothermal film, comprising:
two heat-resistant insulating films (60) arranged oppositely, the heat-resistant insulating films (60) being made of an insulating material;
a heating tape (50) sandwiched between two of said heat-resistant insulating films (60), said heating tape (50) being made of the electrothermal composite material according to any one of claims 1 to 8, said two heat-resistant insulating films (60) being joined to constitute an integrated electrothermal film.
13. The electric heating film according to claim 12, wherein the electric heating film comprises at least one heat generating region formed by continuously bending a strip of the heating tape (50) in the heat-resistant insulating film (60).
14. The electrothermal film according to claim 12, wherein the heating band (50) is a plurality of bands, and the electrothermal film further comprises:
conducting foil (80), conducting foil (80) will many heating band (50) electricity end to end connects, forms series circuit to constitute a district that generates heat, conducting foil (80) are made by copper foil or aluminium foil.
15. An electrothermal film according to claim 12, wherein the heat-resistant insulating film (60) is made of at least one material of polyethylene, polyimide, polyethylene terephthalate and silicone gel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210642047.2A CN115052378A (en) | 2022-06-07 | 2022-06-07 | Electrothermal composite material, electrothermal band and electrothermal film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210642047.2A CN115052378A (en) | 2022-06-07 | 2022-06-07 | Electrothermal composite material, electrothermal band and electrothermal film |
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| CN115052378A true CN115052378A (en) | 2022-09-13 |
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| CN202210642047.2A Pending CN115052378A (en) | 2022-06-07 | 2022-06-07 | Electrothermal composite material, electrothermal band and electrothermal film |
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| Country | Link |
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