CN202727433U - Radiation material with graphite film and graphene composition structure - Google Patents
Radiation material with graphite film and graphene composition structure Download PDFInfo
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- CN202727433U CN202727433U CN 201120454955 CN201120454955U CN202727433U CN 202727433 U CN202727433 U CN 202727433U CN 201120454955 CN201120454955 CN 201120454955 CN 201120454955 U CN201120454955 U CN 201120454955U CN 202727433 U CN202727433 U CN 202727433U
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Abstract
The utility model provides a radiation material with a graphite film and a graphene composition structure and belongs to the technical field of radiation materials. The radiation material comprises a first graphene layer, a second graphene layer and a graphite film layer, wherein the first graphene layer is arranged on one end face of the radiation material and is a physical layer composed of graphene, the second graphene layer corresponds to the first graphene layer, is arranged on the other end face of the radiation material and is a physical layer composed of graphene, and the graphite film layer is arranged between the first graphene layer and the second graphene layer in an interlayer mode and is a physical layer composed of graphite films. The radiation material has high radiation performance, can combine the advantages of the graphite films and graphene which serve as radiation materials, can be applied to the radiation field and is not only used for radiating.
Description
Technical field
The utility model belongs to the heat sink material technical field, but is not limited to the application of heat radiation aspect.
Background technology
The numerous areas such as electronic product, machinery, electric power, communication, chemical industry in the process of product processing, production, and in the use procedure, all can produce the different heat of quantity.And, if the heat that produces can not effectively be distributed, then can to processing and the use of product, all might impact.
At present, various heat sink materials are widely used.Dissimilar heat sink materials can have different performances, such as the heat conductivility of metal material is good, wherein a part of metal material particularly, and such as copper, aluminium, silver etc., its thermal conductivity is especially good.Utilize these metal radiators, the radiator such as copper radiator, aluminium matter is widely used.
The below enumerates the thermal conductivity performance of some heat sink materials commonly used:
Aluminium: 237W/mK;
Copper: 401W/mK;
Silver: 420W/mK;
Gold: 318W/mK.
Along with the appearance of the Delanium membrane material of high heat dispersion, its heat-sinking capability has increased significantly, and can reach at present: 1500～2200W/mK.And at present as the grapheme material of study hotspot, then having more powerful heat-sinking capability, its thermal conductivity reaches as high as 5000W/mK.The membrane material of high rate of heat dissipation like this is the radiating equipment in the various products, and new selection is provided.
In the flaky material that can make at present, the thickness of Graphene is the thinnest, also has high intensity and thermal conductivity.
And existing high conductive graphite film also has weak point, though be high conductive graphite film certain folding resistance is arranged, and the weak strength between the material can be torn easily, perhaps because of the displacement of institute's adhesive attachment means disrepair phenomenon occurs, or entry material comes off etc.
The high-cooling property that how effectively to keep graphite film can be resisted larger External Force Acting simultaneously, is the problem that needs at present solution.
The utility model content
The purpose of this utility model provides a kind of heat sink material and its implementation with graphite film and graphene composite structure, with the heat sink material that provides a kind of graphite film and Graphene to combine, be applied to field of radiating but be not limited to the application of heat radiation aspect.
A kind of heat sink material with graphite film and graphene composite structure described in the utility model, it comprises:
The first graphene layer, it is arranged on one of them end face of this heat sink material, the Physical layer that is comprised of Graphene;
The second graphene layer, it is corresponding with the first above-mentioned graphene layer, is arranged on another end face of this heat sink material the Physical layer that is comprised of Graphene;
The graphite rete, it is that form with interlayer is arranged between above-mentioned the first graphene layer and the second graphene layer, the Physical layer that is comprised of graphite film.
Further, described the first graphene layer or the second graphene layer, include four individual layers and more than.
Further, described the first graphene layer or the second graphene layer, its thickness is within 1000 nanometers.
Further, described graphite rete, thickness is more than 1 micron.
Further, described graphite rete, its thickness is between 5 microns to 5 millimeters.
Further, described graphite rete, its thickness is preferably between 10 microns to 100 microns.
Further, the version of described heat sink material is, graphene layer-graphite rete-[(graphene layer-graphite rete) * N]-graphene layer, and N is the integer more than or equal to 1.
Further, between described the first graphene layer and the second graphene layer, also be provided with graphene layer and/or metal level.
Further, the version of described heat sink material is, graphene layer-graphite rete-[(metal level-graphite rete) * N]-graphene layer, and wherein N is the integer more than or equal to 1.
Further, the version of described heat sink material is, graphene layer-[(graphite rete-metal level) * N]-graphene layer, and wherein N is the integer more than or equal to 1.
Further, between graphene layer and adjacent graphite rete, be provided with the adhesive that the two is linked together.
Further, described adhesive arranges the face structure that structure is thin layer form, lattice array structure, line array structure three one on graphene layer and/or graphite rete.
Further, described adhesive is organic adhesion agent.
Further, described adhesive is metal material.
Further, the face structure of the metal material of the thin layer form that adopts, thickness is within 10 microns.
Further, described metal material be aluminium, copper, tin, silver, gold one of them.
Further, graphene layer is the same with the size of graphite rete, and perhaps the size of graphene layer is greater than the size of graphite rete.
Further, the size of graphene layer is arranged on the graphite film material that forms the graphite rete in the interlayer of the grapheme material that forms graphene layer greater than the size of graphite rete, and its each limit equates to the distance of grapheme material.
Further, be fixed between the grapheme material with graphite film material periphery, form the graphite film material sealing with respect to the inboard, have the structure of " dumpling " form.
The utility model has the advantage of: utilize graphite rete and graphene layer compound action between the two, learn from other's strong points to offset one's weaknesses, both can maintain the high heat dispersion of graphite rete, can eliminate again the original defective of graphite rete, comprise that surface strength was low, fall the weak points such as fragment easily.
Description of drawings
Fig. 1 is the structural representation with heat sink material of graphite film and graphene composite structure described in the utility model, is the first embodiment.
Fig. 2 is the structural representation with heat sink material of graphite film and graphene composite structure described in the utility model, is the second embodiment.
Fig. 3 is the structural representation with heat sink material of graphite film and graphene composite structure described in the utility model, is the third embodiment.
Fig. 4 is the structural representation with heat sink material of graphite film and graphene composite structure described in the utility model, is the 4th kind of embodiment.
Fig. 5 is the structural representation with heat sink material of graphite film and graphene composite structure described in the utility model, is the 5th kind of embodiment.
Fig. 6 is the implementation method flow chart with heat sink material of graphite film and graphene composite structure, carries out bonding realization flow for adopting metal material, is the 6th embodiment.
Fig. 7-the 1st has in the process of heat sink material of graphite film and graphene composite structure in preparation, and the structural representation that adhesive arranges is the lattice array structural representation.
Fig. 7-the 2nd has in the process of heat sink material of graphite film and graphene composite structure in preparation, and the structural representation that adhesive arranges is parallel lines array structure schematic diagram.
Fig. 7-the 3rd has in the process of heat sink material of graphite film and graphene composite structure in preparation, and the structural representation that adhesive arranges is grid lines strip array structural representation.
Fig. 8 is the implementation method flow chart with heat sink material of graphite film and graphene composite structure, is to adopt organic adhesion agent to carry out bonding realization flow, and be the 7th embodiment.
Fig. 9 is the implementation method flow chart with heat sink material of graphite film and graphene composite structure, is to adopt directly extrusion bonded realization flow, and be the 8th embodiment.
Figure 10 is the implementation method flow chart with heat sink material of graphite film and graphene composite structure, is the 9th embodiment.
The specific embodiment
Below in conjunction with specific embodiment, and accompanying drawing is further described in detail the utility model.
In the utility model, utilize graphite rete and graphene layer compound action between the two, learn from other's strong points to offset one's weaknesses, both can maintain the high heat dispersion of graphite rete, can eliminate again the original defective of graphite rete, comprise that surface strength is low, fall the weak points such as fragment easily.Below in conjunction with accompanying drawing the utility model is further described.On the other hand, the reason that arranges like this is that the graphite rete of macroscopic thickness is mature technology at present, and the graphene layer of macroscopic thickness also is difficult to realize at present, but the graphene layer of single or multiple lift, comprise the single-layer graphene layer of large scale, also can realize at present.
The explanation of Fig. 1:
Join shown in Figure 1ly, showed the structural representation with heat sink material 100 of graphite film and graphene composite structure described in the utility model here, be first embodiment in the utility model.
This heat sink material comprises:
The first graphene layer 110, it is arranged on one of them end face of this heat sink material 100, the Physical layer that is comprised of Graphene;
The second graphene layer 130, it is corresponding with the first above-mentioned graphene layer 110, is arranged on another end face of this heat sink material 100 Physical layer that is comprised of Graphene;
And graphite rete 120, it is that form with interlayer is arranged in the middle of above-mentioned the first graphene layer 110 and the second graphene layer 130, the Physical layer that is comprised of graphite film.
That is to say that in the present embodiment, described heat sink material 100 includes altogether three layers, two ends are respectively graphene layer up and down, and the centre is the graphite rete.
The advantage that arranges like this is that graphene layer has very high intensity and heat transfer efficiency, but makes the Graphene of macroscopic thickness, such as the Graphene of micron order thickness, still is very difficult thing at present.Therefore, just can select thinner Graphene, be used as the upper lower protective layer of graphite rete.
Described the first graphene layer 110 and the second graphene layer 130, their thickness is not construed as limiting.But preferred embodiment, described the first graphene layer 110 or the second graphene layer 130, their thickness should be more than the stack thickness of four monoatomic layer Graphenes.In this case, the described material that includes monoatomic layer Graphene more than four layers and four layers just has certain guarantee aspect intensity.As preferred embodiment, described Graphene should include four individual layers and more than.
Further, described the first graphene layer and the second graphene layer, its thickness is within 1000 nanometers.
Described graphite rete, the relative technology of product of making macroscopic thickness is comparatively ripe, therefore just can be by the form of both combinations, both can prevent in the situation that graphite rete surface strength goes wrong, the phenomenon of granule fragment of coming off occurs, in addition, also can improve the intensity of manufactured goods.
In the utility model, described graphite rete, thickness is more than 1 micron.
Further, described graphite rete, its thickness is between 5 microns to 5 millimeters.
Further, described graphite rete, its thickness is preferably between 10 microns to 100 microns.
Fixed form between described the first graphene layer 110 or the second graphene layer 130, they and adjoining graphite rete 120 has diversified selection.
Such as, can carry out between the two bonding by the form of adhesive, such as, be fixed by pressure-sensitive adhesive.Perhaps utilize other any material that can realize adhesive function.
In addition, the mode of utilizing described the first graphene layer 110 and the second graphene layer 130 both and graphite retes 120 to carry out pressing is fixed, and also is a kind of alternative fixed solution.
In the embodiment shown in this figure, described the first graphene layer 110 and the second graphene layer 130, and middle graphite rete 120 threes' planar dimension are identical.The three presses close to each other, has formed laminated construction.
The explanation of Fig. 2:
Join shown in Figure 2ly, showed the composition structure with heat sink material 200 of graphite film and graphene composite structure described in the utility model, be the second embodiment.
In this embodiment, described heat sink material 200 is the same with the stacked order of putting of graphene layer and graphite film among the described embodiment of above-mentioned Fig. 1.But in this heat sink material, the size of the first graphene layer 210 and the second graphene layer 230 is suitable, but the size around it is all greater than the size of graphite rete 220.
Can be bonding with carrying out between the grapheme material of graphite film material periphery, form the composite heat dissipation material that seals by graphene layer, concrete preparation process in the length below, also can go on to say in conjunction with flow chart shown in Figure 9.
The explanation of Fig. 3:
Join shown in Figure 3ly, showed the composition structural representation with heat sink material 300 of graphite film and graphene composite structure described in the utility model here, be the third embodiment.
In the structure of the described heat sink material 300 of this embodiment, topmost and foot are respectively the first graphene layer 310 and the second graphene layer 320.
Further,, be provided with two-layer and two-layer above graphite rete at the first graphene layer 310 and the second graphene layer 320 between the two, and the graphene layer that between the graphite rete, also is provided with other.
In the present embodiment, the structure of described heat sink material 300 is described as follows according to successively mode:
Graphene layer-graphite rete-[(graphene layer-graphite rete) * N]-graphene layer, wherein N is the integer more than or equal to 1.
Shown in the ginseng figure, in the present embodiment, the top is the first graphene layer 310, is the first graphite rete 340 below and then, is the 3rd graphene layer 330 below being right after, and is the second graphite rete 350 below and then, and bottommost is the second graphene layer 320.Between aforesaid each layer, the form by adhesive is fixed, and perhaps utilizes the mode that compresses each other to be fixed, and perhaps other mode is fixed.
Adopt aforementioned schemes in the situation that the numerical value of N increases, can increase expediently the graphene layer of intermediate course part and the quantity of graphite rete, and, can also guarantee the strength and toughness of whole heat sink material 300.The heat sink material of this embodiment is mainly used in need to larger thickness, and heat radiation is required higher situation.
The explanation of Fig. 4:
Joining shown in Figure 4ly, showed the composition structural representation with heat sink material 400 of graphite film and graphene composite structure described in the utility model here, is the 4th kind of embodiment.
In this embodiment, described heat sink material 400, structure from top to bottom is followed successively by:
The top is the first graphene layer 410;
And then be the first graphite rete 440 below;
It is metal level 430 below being right after;
And then be the second graphite rete 450 below;
Bottommost is the second graphene layer 420.
This version is to be graphene layer possessing two ends, has among the graphene layer on the basis of graphite rete, increases the version of other interlayer.And among this embodiment, interlayer is that the mode by metal level realizes.
Between aforesaid each layer, can be fixed by the form of adhesive; Perhaps utilize the mode that compresses each other to be fixed; Perhaps other mode is fixed, such as, utilize metal level 430 to carry out heat fused, and then condensation, can play fixation between the two to the first adjacent graphite rete 440 and the second graphite rete 450.
Further, and non-limiting, the structure among this figure can also be expressed as preferred embodiment:
Graphene layer-graphite rete-[(metal level-graphite rete) * N]-graphene layer, wherein N is the integer more than or equal to 1.
The scheme that adopts present embodiment to provide can also be used the characteristic of metal, comprises having higher intensity, good heat conductivility.And have the strong metal level of the multiple capacity of heat transmission available, such as the copper material bed of material and the aluminium bed of material etc., its cost is also lower.
The explanation of Fig. 5:
Joining shown in Figure 5ly, showed the composition structural representation with heat sink material 500 of graphite film and graphene composite structure described in the utility model here, is the 5th kind of embodiment.Present embodiment and embodiment shown in Figure 4 have similarity, but also to some extent difference.
In this embodiment, described heat sink material 500, structure from top to bottom is followed successively by:
The top is the first graphene layer 510;
And then be graphite rete 540 below;
It is metal level 530 below being right after;
Bottommost is the second graphene layer 520.
Between aforesaid each layer, can be fixed by the form of adhesive; Perhaps utilize the mode that compresses each other to be fixed; Perhaps other mode is fixed, such as, utilize metal level 530 to carry out heat fused, and then condensation, can be to playing fixation between adjacent graphite rete and the graphene layer.
Structure among this figure can be expressed as:
Graphene layer-[(graphite rete-metal level) * N]-graphene layer, wherein N is the integer more than or equal to 1.
The typical feature of this scheme is, makes between the graphene layer of an end and the metal level directly to be fixed.Under this scheme, single metal level can be made significantly thicker, have eaily thickness flexible adjustment.
The scheme that adopts present embodiment to provide can also be used the characteristic of metal, comprises having higher intensity, good heat conductivility, and the strong metal material of the multiple capacity of heat transmission is arranged, and comprising the copper material bed of material and the aluminium bed of material etc., cost is all lower.
The below will have the preparation method of the heat sink material of graphite film and graphene composite structure, be further described in conjunction with the embodiment shown in Fig. 6, Fig. 7-1, Fig. 7-2, Fig. 7-3.
Join shown in Figure 6ly, showed the flow chart of the preparation method of the heat sink material with graphite film and graphene composite structure described in the utility model here, be the 6th embodiment in the utility model.
Jointing material wherein is that the mode that adopts metallic material to cool off again realizes.For example and without limitation, its step is described below:
Step S110 between the interlayer of graphite rete and adjacent graphene layer, arranges the solid-state metallic material layer.
This metal material layer is fit to do very thinly.As preferred embodiment and non-limiting, be fit to adopt metal powder, perhaps sheet metal, perhaps wire, perhaps the structure such as thin bonding jumper realizes.Its thickness should be within 0.5 millimeter, more preferably within 10 microns.
Aforesaid metal material layer can be used as independently that thin layer presents, also can adjoining graphite rete and graphene layer at least one arrange.
For example and without limitation, aforesaid in adjoining graphite rete and the graphene layer scheme that arranges of one at least, be preferably 4 kinds: be respectively thin metal layer structure, metal bisque structure, lattice array structure and line array structure.In use, with metal material with above-mentioned form at least the mode of one be coated on corresponding graphene layer or the graphite rete and get final product.
Shown in ginseng Fig. 7-1, Fig. 7-2, Fig. 7-3, be the coated structure of above-mentioned solid-state metallic material, wherein Fig. 7-1 is the lattice array structure, and Fig. 7-2 is parallel lines array junctions composition, and Fig. 7-3 is grid lines strip array structure.
(1) the face structure of thin metal layer
As previously mentioned, in the situation that adopts thin metal layer, its thickness may be selected within 0.5 millimeter, more preferably within 10 microns.Described thin metal layer, the material that adopts for example and without limitation, can adopt the aluminium foil that meets thickness requirement, perhaps Copper Foil, perhaps tinfoil paper etc.; Or even silver foil, perhaps goldleaf.
(2) the face structure of metal bisque
Accordingly, when adopting the metal bisque, require after the molten condition melting and solidifying, the thickness of its metal level can meet the front requirement equally.The type of metal powder does not limit, but is fit to select the metal material that heat conductivility is strong, be easy to process, such as copper powder, aluminium powder, etc.
(3) lattice array structure
Shown in ginseng Fig. 7-1,, array format metal lattice spaced by tool solidifies after melting again, thereby realizes the adhesive effect between the material.As preferred embodiment and non-limiting, the size of each metal dots, within 5mm * 5mm, and each metal dots is to the minimum range of contiguous metal dots, also within 5mm.
(4) line array structure
Shown in ginseng Fig. 7-2, realize by parallel lines or interlaced metal wire.Such as, can adopt horizontal metal wire to implement, the width of each metal wire is 3mm, and each metal wire is parallel to each other, and the minimum distance between the adjacent metal wire is 3mm.
Shown in ginseng Fig. 7-3, in ability embodiment, just make staggered network by lines, it also is equally passable.
To be arranged to above-mentioned lattice structure or line array structure as the metal material of adhesive, although mainly be because metal has certain thermal diffusivity, but its radiating efficiency is compared with Graphene and graphite film material or gap is arranged, so the washing structure is arranged to array, rather than whole surface all is coated with and is covered with metal, can improve radiating efficiency like this.
Step S120, with graphite rete and adjacent close attaching of graphene layer, aforesaid solid-state metallic material is set to the material in the interlayer.
In the solid-state metallic material described in this step and the above-mentioned steps S110, for example and without limitation, be the one such as aluminium or copper or tin is silver-colored or golden, mainly be the high-termal conductivity of utilizing metal, fusible voltinism and high ductibility here.
Step S130 is directed to the graphite rete of attaching or adjacent graphene layer and heats, and aforesaid solid-state metallic material is carried out melt processed.
The temperature that heats in this step requires the melting temperature above corresponding solid-state metallic material, is heated to the solid metallic fusing.The metal partial melting further, can also carry out Fast Heating, so that equally also can reach fixing purpose after it solidifies.
Step S140, in that metal material is at least part of when being in molten state, both compress rear condensation with aforesaid graphite rete and adjacent graphene layer.Behind step S140, can also graphene layer and graphite rete with the other end between, and between other graphite rete, metal level, use step S110 to be fixed to the method for step S140; Certainly, also can synchronization implementation.
Treat that all aspects that need to fix all fix completely, and be cooled to room temperature, just make the heat sink material with graphite film and graphene composite structure described in the utility model.
The explanation of Fig. 8:
Join shown in Figure 8ly, showed the implementation method flow chart with heat sink material of graphite film and graphene composite structure described in the utility model, carry out bonding realization flow for adopting organic adhesion agent, it is the 7th embodiment of the present utility model.
Step S210, graphite rete and adjacent graphene layer both at least on the one, the coated structure of adhesive is set.For example and without limitation, the coated structure of adhesive in this step can be similar as the embodiment of jointing material with aforesaid metal, comprises lattice array structure, line array structure and face structure etc., do not repeat them here.
Step S220 carries out graphite rete and adjacent graphene layer near attaching, and aforesaid adhesive is the material of layout in the interlayer.In this step and above-mentioned steps S210, described adhesive is organic adhesion agent, for example heat-conducting type silica gel, perhaps pressure sensitive adhesive etc.
Further, in this step, if adhesive is PUR, also will to be arranged among the step S210 graphite rete and adjacent graphene layer both at least the adhesive on the one carry out heat fused and process, in order in step S230, be fixed.
Step S230, both compress rear fixing with aforesaid graphite rete and adjacent graphene layer.After step 230, between the graphene layer and graphite rete with the other end, and between other graphite rete, metal level, use step S210 to be fixed to the method for step S230.Treat that all aspects that need to fix all fix completely, just make the heat sink material with graphite film and graphene composite structure described in the utility model.
The explanation of Fig. 9:
Join shown in Figure 9ly, showed the implementation method flow chart with heat sink material of graphite film and graphene composite structure described in the utility model, for adopting directly extrusion bonded specific implementation flow process, it is the 8th embodiment of the present utility model.
Step S310 gets respectively the graphite film material as the graphite rete, and as the grapheme material of graphene layer, outermost wherein partly is graphene layer.
Step S320 with the two overlapping placement, and exerts pressure to it, and the two is pressed close to mutually.
Such as, apply the power of size between 10-100 ox/square centimeter, make it mutually compress, attach.
Thereby graphite film and the compound heat sink material of Graphene that acquisition needs.
The explanation of Fig. 2, Figure 10:
Ginseng Fig. 2, shown in Figure 10, showed the implementation method flow chart with heat sink material of graphite film and graphene composite structure described in the utility model, be a kind of embodiment, this embodiment is prepared into heat sink material the coating form that is similar to " dumpling " structure, utilize graphene layer that the graphite rete is wrapped in wherein, thus the conductive structure that realization is integrated.
Step S410 gets grapheme material as the upper and lower end face of heat sink material, gets size less than the graphite film material of grapheme material size, as the interlayer of grapheme material.
Specifically, get the first graphene layer 110 and the second graphene layer 130 that grapheme material forms, as the upper and lower end face of heat sink material, get size less than the graphite rete 120 of the graphite film material composition of graphene layer size, as the interlayer of grapheme material.Can join shown in Figure 2.
Step S420 is arranged on above-mentioned graphite film material in the interlayer of grapheme material, and each limit reserves the grapheme material part.
In this step, for example and without limitation, it is equal to the distance of grapheme material that its each limit can be set, and can certainly not wait, as long as be useful on fixing reserved part.
Step S430 will be fixed between the grapheme material of graphite film material periphery, form the structure that periphery surrounds.
Specifically, carry out bondingly between first, second graphene layer with graphite film material periphery, form fixed structure, be prepared into the heat sink material of the composite construction that is similar to " dumpling " structure.Concrete fixed form is that above-mentioned employing organic adhesion agent or metal material is fixed in this step, perhaps, the mode that mutually compresses between the graphene layer of periphery is fixed etc.
More than be to description of the present utility model and non-limiting, based on other embodiment of the utility model thought, also all among protection domain of the present utility model.
Claims (18)
1. heat sink material with graphite film and graphene composite structure is characterized in that this material comprises:
The first graphene layer, it is arranged on one of them end face of this heat sink material, the Physical layer that is comprised of Graphene;
The second graphene layer, it is corresponding with the first above-mentioned graphene layer, is arranged on another end face of this heat sink material the Physical layer that is comprised of Graphene;
The graphite rete, it is that form with interlayer is arranged between above-mentioned the first graphene layer and the second graphene layer, the Physical layer that is comprised of graphite film.
2. a kind of heat sink material with graphite film and graphene composite structure according to claim 1 is characterized in that: described the first graphene layer or the second graphene layer, include four individual layers and more than.
3. a kind of heat sink material with graphite film and graphene composite structure according to claim 2, it is characterized in that: described the first graphene layer or the second graphene layer, its thickness is within 1000 nanometers.
4. a kind of heat sink material with graphite film and graphene composite structure according to claim 1, it is characterized in that: described graphite rete, thickness is more than 1 micron.
5. a kind of heat sink material with graphite film and graphene composite structure according to claim 4, it is characterized in that: described graphite rete, its thickness is between 5 microns to 5 millimeters.
6. a kind of heat sink material with graphite film and graphene composite structure according to claim 5, it is characterized in that: described graphite rete, its thickness is preferably between 10 microns to 100 microns.
7. a kind of heat sink material with graphite film and graphene composite structure according to claim 1, it is characterized in that: the version of described heat sink material is, graphene layer-graphite rete-[(graphene layer-graphite rete) * N]-graphene layer, N is the integer more than or equal to 1.
8. a kind of heat sink material with graphite film and graphene composite structure according to claim 1 is characterized in that: between described the first graphene layer and the second graphene layer, also be provided with graphene layer and/or metal level.
9. a kind of heat sink material with graphite film and graphene composite structure according to claim 8, it is characterized in that: the version of described heat sink material is, graphene layer-graphite rete-[(metal level-graphite rete) * N]-graphene layer, wherein N is the integer more than or equal to 1.
10. a kind of heat sink material with graphite film and graphene composite structure according to claim 8, it is characterized in that: the version of described heat sink material is, graphene layer-[(graphite rete-metal level) * N]-graphene layer, wherein N is the integer more than or equal to 1.
11. a kind of heat sink material with graphite film and graphene composite structure according to claim 1 is characterized in that: between graphene layer and adjacent graphite rete, be provided with the adhesive that the two is linked together.
12. a kind of heat sink material with graphite film and graphene composite structure according to claim 11, it is characterized in that: described adhesive arranges the face structure that structure is thin layer form, lattice array structure, line array structure three one on graphene layer and/or graphite rete.
13. a kind of heat sink material with graphite film and graphene composite structure according to claim 11 is characterized in that: described adhesive is organic adhesion agent.
14. a kind of heat sink material with graphite film and graphene composite structure according to claim 11 is characterized in that: described adhesive is metal material.
15. a kind of heat sink material with graphite film and graphene composite structure according to claim 14 is characterized in that: the face structure of the metal material of the thin layer form that adopts, thickness is within 10 microns.
16. a kind of heat sink material with graphite film and graphene composite structure according to claim 1 is characterized in that: graphene layer is the same with the size of graphite rete, and perhaps the size of graphene layer is greater than the size of graphite rete.
17. a kind of heat sink material with graphite film and graphene composite structure according to claim 16, it is characterized in that: the size of graphene layer is greater than the size of graphite rete, the graphite film material that forms the graphite rete is arranged in the interlayer of the grapheme material that forms graphene layer, its each limit equates to the distance of grapheme material.
18. a kind of heat sink material with graphite film and graphene composite structure according to claim 17 is characterized in that: be fixed between the grapheme material with graphite film material periphery, form the structure with respect to the graphite film material sealing of inboard.
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| CN 201120454955 CN202727433U (en) | 2011-11-16 | 2011-11-16 | Radiation material with graphite film and graphene composition structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070715A (en) * | 2014-06-10 | 2014-10-01 | 广州市尤特新材料有限公司 | Graphene heat conduction and soaking film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104070715A (en) * | 2014-06-10 | 2014-10-01 | 广州市尤特新材料有限公司 | Graphene heat conduction and soaking film |
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