CN109451606A - A kind of transparent heating film of impact resistance based on graphene - Google Patents
A kind of transparent heating film of impact resistance based on graphene Download PDFInfo
- Publication number
- CN109451606A CN109451606A CN201811187916.7A CN201811187916A CN109451606A CN 109451606 A CN109451606 A CN 109451606A CN 201811187916 A CN201811187916 A CN 201811187916A CN 109451606 A CN109451606 A CN 109451606A
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- graphene
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- heating film
- impact resistance
- transparent heating
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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
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
-
- 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
- H05B3/03—Electrodes
-
- 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
- H05B3/06—Heater elements structurally combined with coupling elements or holders
-
- 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—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
-
- 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—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heater 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—Heater 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
Abstract
The invention discloses a kind of transparent heating films of the impact resistance based on graphene, by the way that supporting layer is arranged in graphene heating layer lower layer, keep overall structural strength, avoiding stress causes graphene-structured to destroy, and by the way that buffer layer is arranged on the upper layer of graphene heating layer, absorb heating film membrane structure inside conduct stress, and release interfacial stress, avoid stress concentrate and caused by interlayer structure destroy.The transparent heating film of impact resistance of the invention greatly enhances graphene heating film useful life longevity, extends graphene heating film service life.
Description
Technical field
The present invention relates to Far-Infrared Technical Areas, have and are related to a kind of impact resistance heating film based on graphene.
Background technique
The single-layer graphene or multilayer prepared by CVD (Chemical Vapor Deposition, chemical vapor deposition)
Graphene, the oxygen-containing polar group of micro-scale is few, to macroscopically show chemical inertness, surface can be very low, especially
Single-layer graphene, surface are highly prone to external force and damage.
Due to the heating film of the graphene preparation of CVD method preparation, heating rate is fast and therefore fever stable and uniform is based on
Graphene exothermic material becomes a new hot spot to prepare heat-emitting products.But it is such as curved in practical applications, due to external force
Folding or weight local assault etc., so that single-layer graphene damages, so that heating film occurs, heating temperature is uneven or office
Phenomena such as portion does not generate heat/overheats, to influence the use of the heating film based on graphene, the i.e. limitation due to graphene itself
Property, so that the useful life longevity of the heating film based on graphene is poor, and then seriously constrain the development of graphene heat-emitting products.
In view of this, it is thus proposed that due to foamed material, such as foam, there are a large amount of holes, can effectively absorb impact and answer
Therefore power foam material can be arranged between graphene layer and electrode layer.But foamed material is nontransparent material, empty
In the presence of also causing the transmitance of its light to be remarkably decreased, and CVD graphene heating film is as a material for pursuing high transparency, because
This, nontransparent foamed material such as foam can not be applied to graphene heating film as buffer layer, such as patent
Various foam materials are actually and the not applicable graphene heating film for requiring high transparency in CN201720046374.6.
Summary of the invention
For the above technical problems, the present invention provides a kind of transparent heating film of the impact resistance based on graphene.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of transparent heating film of impact resistance based on graphene comprising the supporting layer that is cascading from bottom to top,
Graphene heating layer and buffer layer.
Wherein, the graphene heating layer includes graphene layer and the electrode that the graphene layer at least side is arranged in
Layer, and the electrode layer uses interdigital electrode.
Further, the anode and cathode of the interdigital electrode are separately positioned on the two sides of the graphene layer；Alternatively, institute
Two sets of interdigital electrodes are respectively set in the two sides for stating graphene layer.
Wherein, the buffer layer is ethylene-vinyl acetate, thermoplastic polyurethane, polyacrylate pressure-sensitive, polyethylene
The combination of any one or more material in butyral material and manufactured stratiform membrane structure.Preferably, cushioning layer material
For thermoplastic polyurethane, ethylene-vinyl acetate
Wherein, the 10-90% with a thickness of the transparent fever film thickness of the impact resistance of the buffer layer.
Wherein, the Young's modulus of the buffer layer is 10-100MPa, preferably 20-50MPa.
Wherein, the elongation at break ranges of the buffer layer is 200-3000%, preferably 500-1500%.
Wherein, the graphene layer is single-layer graphene or multi-layer graphene.
Wherein, the supporting layer is with a thickness of 1-500um, preferably 20-150um.
Wherein, the supporting layer thermal expansion coefficient range 0.1-100*10-6/℃；It is preferred that 10-60*10-6/℃。
Wherein, the supporting layer elasticity modulus range is 0.5-20Gpa, preferably 2-8Gpa.
Wherein, the surface encapsulation layer is PET, PP, PI, PMMA, PC, and preferred surface encapsulation layer material is PET.
Wherein, the surface encapsulation layer thickness range is 1-500um；Preferred surface encapsulation layer thickness range is 20-
150um。
The invention has the beneficial effects that:
The invention discloses a kind of transparent heating films of the impact resistance based on graphene, by setting in graphene heating layer lower layer
Supporting layer is set, overall structural strength is kept, avoids stress and graphene-structured is caused to destroy, and by graphene heating layer
Optical-grade transparent material is arranged as buffer layer in upper layer, absorbs and conducts stress inside heating film membrane structure, and release interfacial stress,
Avoid stress concentrate and caused by interlayer structure destroy.The transparent heating film of impact resistance of the invention greatly enhances graphene fever
Film useful life longevity extends graphene heating film service life.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of an embodiment of the transparent heating film of impact resistance based on graphene of the invention；
Fig. 2 is the schematic diagram of an embodiment of electrode layer in the graphene heating layer of the transparent heating film of impact resistance in Fig. 1；
Fig. 3 a and Fig. 3 b are respectively the forward and backward infrared image of blank sample falling ball impact test；
Fig. 4 a and Fig. 4 b are respectively the forward and backward infrared image of blank sample repeated bend test；
Fig. 5 a and Fig. 5 b are respectively the forward and backward infrared figure of the transparent heating film falling ball impact test of impact resistance in embodiment one；
Fig. 6 a and Fig. 6 b are respectively the forward and backward infrared figure of the transparent heating film repeated bend test of impact resistance in embodiment one
Picture；
Fig. 7 a and Fig. 7 b are the forward and backward infrared figure of the transparent heating film falling ball impact test of impact resistance in embodiment two
Picture；
Fig. 8 a and Fig. 8 b are respectively the forward and backward infrared figure of the transparent heating film repeated bend test of impact resistance in embodiment two
Picture；
Fig. 9 a and Fig. 9 b are respectively the forward and backward infrared figure of the transparent heating film falling ball impact test of impact resistance in embodiment three
Picture；
Figure 10 a and Figure 10 b are respectively the forward and backward infrared figure of the transparent heating film repeated bend test of impact resistance in embodiment three
Picture.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment one
Referring to Fig. 1, the structure for an a kind of embodiment of the transparent heating film of impact resistance based on graphene of the invention is shown
It is intended to, specifically, the transparent heating film of the impact resistance includes supporting layer 1, the stone being cascading from bottom to top in the present embodiment
Black alkene heating layer 2 and buffer layer 3 (further including certainly, encapsulated layer 4).
In the present embodiment, which is the ethene-vinyl acetate membrane of lipoprotein hot pressing with a thickness of 200um in the graphene
Transparent layered film on heating layer 2, and its ethene-vinyl acetate membrane of lipoprotein thickness accounting (accounts for the thickness of entire transparent heating film
Accounting) be 50%, Young's modulus 35Mpa, break-draw rate 650%.
In the present embodiment, which includes graphene layer 21 and is arranged in at least side of graphene layer 21
Electrode layer 22.Wherein, graphene layer is the single-layer graphene or multi-layer graphene prepared using CVD method.And the electrode layer 22
Using the interdigital electrode of spaced set, i.e. the anode and cathode of interdigital electrode are respectively positioned on the graphene layer, referring to fig. 2.When
So, the anode and cathode of interdigital electrode can also be separately positioned on to the two sides of the graphene layer, alternatively, the two sides of the graphene layer
A set of interdigital electrode is respectively set.
In the present embodiment, which is laminar films made of the PI material with a thickness of 100um, and its its thermal expansion system
Number is 5*10-5DEG C, elasticity modulus 3Gpa.
In the present embodiment, the encapsulated layer be made of the transparent materials such as PET or PP or PI or PMMA or PC with a thickness of
The layer structure of 1-500um (preferably 20-150um).
Certainly, in the present embodiment, which can also be used thermoplastic polyurethane, polyacrylate pressure-sensitive, polyethylene
The combination of any one or more material in butyral material and manufactured stratiform membrane structure, and it is saturating with a thickness of impact resistance
The 10-90% of bright heating film (entirety) thickness, Young's modulus are 10-100MPa (preferably 20-50MPa), elongation at break model
It encloses for 200-3000% (preferably 500-1500%).
Certainly, in the present embodiment, which can also be used other transparent material systems such as PET or PVC or PMMA or PC
At the layer structure with a thickness of 1-500um (further be preferably 20-150um), and its thermal expansion coefficient range 0.1-
100*10-6/ DEG C (preferably 10-60*10-6/ DEG C), elasticity modulus range is 0.5-20Gpa (preferably 2-8Gpa).
Embodiment two
The present invention also provides the transparent heating films of another impact resistance comprising the modules in above-described embodiment one,
And identical module uses identical appended drawing reference, working principle is also identical, and which is not described herein again, unlike, this implementation
The buffer layer of the transparent heating film of impact resistance in example is using the ethene-vinyl acetate membrane of lipoprotein hot pressing with a thickness of 1000um in stone
The surface of black alkene heating layer；And the ethene-vinyl acetate membrane of lipoprotein thickness accounting is 80%, Young's modulus 35Mpa, fracture is drawn
Stretch rate 650%.
Embodiment three
The present invention also provides the transparent heating films of another impact resistance comprising the modules in above-described embodiment one,
And identical module uses identical appended drawing reference, working principle is also identical, and which is not described herein again, unlike, this implementation
The buffer layer of the transparent heating film of impact resistance in example is to be sent out using the polyacrylate glue film roll-in with a thickness of 200um in graphene
The surface of thermosphere；And its accounting is 50%, Young's modulus 47Mpa, break-draw rate 450%.
Example IV
In order to it is clearer embodiment above-described embodiment one in the transparent heating film of impact resistance structure and excellent effect,
It is described in detail below with reference to preparation method and impact resistance experiment.
The preparation method of the transparent heating film of the impact resistance of the present embodiment, specifically includes step:
Step 1, the single-layer graphene being prepared by CVD method is shifted using UV glue on the supporting layer with a thickness of 100um.
In the present embodiment, the supporting layer is using laminar films made of PI material, thermal expansion coefficient 5*10-5DEG C, elasticity modulus is
3Gpa。
Step 2, it obtains being made of electrode layer and graphene layer using silk-screen printing silver paste circuit on single-layer graphene surface
Graphene heating layer.
Step 3, the structure table that will be prepared with a thickness of the ethene-vinyl acetate membrane of lipoprotein hot pressing of 200um in step 2
Face obtains the buffer layer on graphene heating layer.In the present embodiment, selected ethene-vinyl acetate membrane of lipoprotein thickness accounting
(accounting for accounting for the thickness of entire transparent heating film) is 50%, Young's modulus 35Mpa, break-draw rate 650%.
Step 4, by with a thickness of the PI film hot pressing of 100um layer on the buffer layer, impact resistance graphene heating film is obtained.
It is tested finally by ball falling impact and impact resistance heating film of the film bends test machine tired out to preparation, specifically
Test method is as follows:
Step 1, DC power supply is loaded to heating film under the conditions of room temperature (20 DEG C), infrared thermal imagery is used after thermostabilization pending
Instrument shoots infrared image.
Step 2, using ball falling impact machine carry out shock-testing, steel ball weight 64g, falling height 80cm, heating film
Encapsulated layer is placed upwards.
Step 3, flexural fatigue test, bending radius 20mm, number of bends are carried out using film bends fatigue tester
50000 times.
Step 4, DC power supply will be loaded at room temperature by the graphene heating film of test, made after thermostabilization pending
Infrared image is shot with thermal infrared imager.
The image obtained before and after contrast test, then front and back image comparison is tested with blank sample (no buffer layer), determine resistance to
Impact effect:
The forward and backward infrared image difference of blank sample falling ball impact test is as shown in Figure 3a and Figure 3b shows, it follows that without buffering
Layer, on ball falling impact to the heating film after, the graphene heating layer at the ball falling impact heating film is broken, so that going out
The athermic phenomenon in current situation portion；As shown in figures 4 a and 4b, thus the forward and backward infrared image of blank sample repeated bend test is distinguished
It is found that the graphene film of heating film damages after being bent the heating film, so as to cause non-uniform phenomenon of generating heat.
The forward and backward infrared image of the present embodiment falling ball impact test is distinguished as shown in figure 5 a and 5b, it follows that there is buffering
When layer, on ball falling impact to the heating film after, the graphene heating layer at the ball falling impact heating film is broken, but is broken journey
Degree is obviously reduced；The forward and backward infrared image of repeated bend test as shown in figures 6 a and 6b, is arranged respectively it follows that working as bending
After having the heating film of buffer layer, the graphene film of the heating film is not damaged.
Embodiment five
In order to it is clearer embodiment above-described embodiment two in the transparent heating film of impact resistance structure and excellent effect,
It is described in detail below with reference to preparation method and impact resistance experiment.
The preparation method of the transparent heating film of the impact resistance of the present embodiment, specifically includes step:
Step 1, single layer CVD graphene is shifted using UV glue in the supporting layer with a thickness of 100um.In the present embodiment, the branch
Support layer is made of PI film, thermal expansion coefficient 5*10-5DEG C, elasticity modulus 3Gpa.
Step 2, obtain what graphene layer and electrode layer were constituted using silk-screen printing silver paste circuit on single-layer graphene surface
Graphene heating layer.
Step 3, the structure table that will be prepared with a thickness of the ethene-vinyl acetate membrane of lipoprotein hot pressing of 1000um in step 2
Face obtains the buffer layer on graphene heating layer.In the present embodiment, selected ethene-vinyl acetate membrane of lipoprotein thickness accounting
(accounting for accounting for the thickness of entire transparent heating film) is 80%, Young's modulus 35Mpa, break-draw rate 650%.
Step 4, by with a thickness of the PI film hot pressing of 100um layer on the buffer layer, impact resistance graphene heating film is obtained.
The same example IV of impact resistance graphene heating film test mode manufactured in the present embodiment, the difference is that bending is tired
It is 50mm that labor, which tests bending radius,.
The forward and backward infrared image of the present embodiment falling ball impact test is distinguished as shown in figs. 7 a and 7b, it follows that there is buffering
When layer, on ball falling impact to the heating film after, the graphene heating layer at the ball falling impact heating film is broken, but is broken journey
Degree is obviously reduced；The forward and backward infrared image of repeated bend test as figures 8 a and 8 b show, is arranged respectively it follows that working as bending
After having the heating film of buffer layer, the graphene film of the heating film is not damaged.
Embodiment six
In order to it is clearer embodiment above-described embodiment two in the transparent heating film of impact resistance structure and excellent effect,
It is described in detail below with reference to preparation method and impact resistance experiment.
The preparation method of the transparent heating film of the impact resistance of the present embodiment, specifically includes step:
Step 1, the single-layer graphene being prepared in the support layer surface with a thickness of 100um using UV glue transfer CVD method.
In the present embodiment, the supporting layer is using laminar films made of PI material, thermal expansion coefficient 5*10-5DEG C, elasticity modulus is
3Gpa。
Step 2, it obtains being made of electrode layer and graphene layer using silk-screen printing silver paste circuit on single-layer graphene surface
Graphene heating layer.
Step 3, the body structure surface that will be prepared with a thickness of the polyacrylate glue film roll-in of 200um in step 2, obtains
Buffer layer on graphene heating layer.In the present embodiment, selected film thickness accounting (accounts for the thickness of entire transparent heating film
Accounting) be 50%, Young's modulus 47Mpa, break-draw rate 450%.
Step 4, by with a thickness of the PI film hot pressing of 100um layer on the buffer layer, impact resistance graphene heating film is obtained.
The same example IV of impact resistance graphene heating film test mode manufactured in the present embodiment, the examination of the present embodiment ball falling impact
Test forward and backward infrared image difference as shown in figures 9 a and 9b, it follows that when having buffer layer, on ball falling impact to the heating film
Afterwards, the graphene heating layer at the ball falling impact heating film is broken, but breaking degree is obviously reduced；Repeated bend test
Forward and backward infrared image is distinguished as as-shown-in figures 10 a and 10b, it follows that after bending is provided with the heating film of buffer layer, it should
The graphene film of heating film does not damage.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of transparent heating film of impact resistance based on graphene, which is characterized in that including what is be cascading from bottom to top
Supporting layer, graphene heating layer and buffer layer, wherein the buffer layer is ethylene-vinyl acetate, thermoplastic polyurethane, gathers
The combination of any one or more material in acrylate pressure-sensitive adhesive, polyvinyl butyral material and manufactured laminar films.
2. a kind of transparent heating film of impact resistance based on graphene as described in claim 1, which is characterized in that the graphene
Heating layer includes graphene layer and the electrode layer that the graphene layer at least side is arranged in.
3. a kind of transparent heating film of impact resistance based on graphene as claimed in claim 2, which is characterized in that the electrode layer
The two sides of the graphene layer are separately positioned on using the anode and cathode of interdigital electrode, and the interdigital electrode；Alternatively, described
Two sets of interdigital electrodes are respectively set in the two sides of graphene layer.
4. the transparent heating film of a kind of impact resistance based on graphene as described in claims 1 or 2 or 3, which is characterized in that described
The 10-90% with a thickness of the transparent fever film thickness of the impact resistance of buffer layer.
5. the transparent heating film of a kind of impact resistance based on graphene as described in claims 1 or 2 or 3, which is characterized in that described
Buffer layer Young's modulus is 10-100MPa；And/or the elongation at break ranges of the buffer layer is 200-3000%.
6. a kind of transparent heating film of impact resistance based on graphene as claimed in claim 5, which is characterized in that the buffer layer
Young's modulus be 20-50MPa.
7. a kind of transparent heating film of impact resistance based on graphene as claimed in claim 5, which is characterized in that the buffer layer
Elongation at break ranges is 500-1500%.
8. the transparent heating film of a kind of impact resistance based on graphene as described in claims 1 or 2 or 3, which is characterized in that described
Graphene layer is single-layer graphene or multi-layer graphene.
9. the transparent heating film of a kind of impact resistance based on graphene as described in claims 1 or 2 or 3, which is characterized in that described
Supporting layer is with a thickness of 1-500um.
10. a kind of transparent heating film of impact resistance based on graphene as claimed in claim 9, which is characterized in that the support
Layer is with a thickness of 20-150um.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111526613A (en) * | 2020-05-18 | 2020-08-11 | 无锡格菲电子薄膜科技有限公司 | Copper electrode graphene electrothermal film and preparation method thereof |
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Application publication date: 20190308 |