CN215850022U - Graphite flake composite heat dissipation material for electronic product - Google Patents
Graphite flake composite heat dissipation material for electronic product Download PDFInfo
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- CN215850022U CN215850022U CN202122451646.XU CN202122451646U CN215850022U CN 215850022 U CN215850022 U CN 215850022U CN 202122451646 U CN202122451646 U CN 202122451646U CN 215850022 U CN215850022 U CN 215850022U
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- layer
- heat
- graphite
- stretching
- heat dissipation
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- 239000000463 material Substances 0.000 title claims abstract description 65
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 47
- 239000010439 graphite Substances 0.000 title claims abstract description 47
- 239000002131 composite material Substances 0.000 title claims abstract description 46
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 45
- 239000002184 metal Substances 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000004519 grease Substances 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011889 copper foil Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 11
- 239000011810 insulating material Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 116
- 238000002791 soaking Methods 0.000 description 11
- 230000005855 radiation Effects 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model discloses a graphite sheet composite heat dissipation material for an electronic product, and relates to the technical field of electronic components. The composite heat-conducting and heat-insulating material comprises an upper surface protection layer, an upper graphite heat-conducting layer, an upper stretching-resistant layer, an upper heat-homogenizing layer, a central substrate layer, a lower heat-homogenizing layer, a lower stretching-resistant layer, a lower graphite heat-conducting layer and a lower surface protection layer which are sequentially and closely superposed from top to bottom. According to the utility model, the metal mesh grid and the elastic heat-conducting rubber layer are arranged in the upper stretching-resistant layer and the lower stretching-resistant layer, so that the material can generate certain deformation under the action of the metal mesh grid, and the deformation is maintained in a safe range through the elastic heat-conducting rubber layer, so that the heat-conducting and heat-dissipating effects of the upper stretching-resistant layer and the lower stretching-resistant layer are ensured, meanwhile, the stretching-resistant strength is provided, the composite heat-dissipating material can be bent and deformed to a certain degree, the composite heat-dissipating material can be ensured to be tightly attached to electronic components, and the contact area is fully ensured to dissipate heat quickly.
Description
Technical Field
The utility model belongs to the technical field of electronic components, and particularly relates to a graphite sheet composite heat dissipation material for an electronic product.
Background
The rapid development of information technology has led to significant increase in chip power consumption of electronic components, and heat dissipation has become an important part of the electronic components. The development of the heat dissipation material with high heat conductivity is an effective means for realizing high-efficiency heat dissipation under the conditions of integration, high density and miniaturization of electronic equipment and instruments.
In the prior art, the composite material is generally high in rigidity, so that the problem of poor cladding performance is easily caused, the contact performance between the composite material and an electronic component is poor, the heat conduction area is small, and heat dissipation is not facilitated.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
The utility model provides a graphite sheet composite heat dissipation material for an electronic product, aiming at the problems in the related art, so as to overcome the technical problems in the prior related art.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model relates to a graphite sheet composite heat dissipation material for an electronic product, which comprises an upper surface protection layer, an upper graphite heat conduction layer, an upper stretching-resistant layer, an upper heat-equalizing layer, a central base material layer, a lower heat-equalizing layer, a lower stretching-resistant layer, a lower graphite heat conduction layer and a lower surface protection layer which are sequentially and closely superposed and compounded from top to bottom; the composite heat dissipation material is in a symmetrical structure relative to the central base material layer; all the layers of the composite heat dissipation material are tightly attached through an adhesive; the center of each of the upper stretch-resistant layer and the lower stretch-resistant layer is compounded with a metal mesh grid, and heat-conducting silicone grease is filled in gaps of the metal mesh grids.
Furthermore, the upper surface protection layer and the lower surface protection layer are made of the same material, and the outer surfaces of the upper surface protection layer and the lower surface protection layer are smooth.
Further, the upper graphite heat conduction layer and the lower graphite heat conduction layer are heat conduction film layers formed by compounding and pressing graphite sheets, and the upper graphite heat conduction layer and the lower graphite heat conduction layer are made of graphite sheets.
Furthermore, elastic heat-conducting rubber layers are attached to two sides of the metal mesh grid of the upper stretching-resistant layer and the lower stretching-resistant layer, and the elastic heat-conducting rubber layers and the metal mesh grid are combined to provide stretching-resistant strength of the composite heat dissipation material.
Furthermore, the central substrate layer is a substrate layer made of copper foil, and the thickness of the central substrate layer is 30-50 microns.
The utility model has the following beneficial effects: according to the graphite sheet composite heat dissipation material for the electronic product, due to the fact that the laminated structure of the composite heat dissipation material is completely symmetrical, the heat transfer distance and the heat transfer path from the two sides of the composite material are the same, the composite heat dissipation material can be used without distinguishing the front side and the back side, and the composite heat dissipation material is convenient for operators to use; this kind of compound heat radiation material of electronic product graphite flake, because the lamellar structure on last tensile layer and tensile layer down comprises the metal net bars that it has heat conduction silicone grease and the elasticity heat conduction rubber layer of metal net bars both sides to fill, make this kind of material can produce the deformation of certain degree under the effect of metal net bars, and keep deformation in safe range through elasticity heat conduction rubber layer, make when the heat conduction radiating effect on tensile layer and tensile layer down is gone up in the assurance, provide tensile strength, so that this kind of compound heat radiation material can carry out deformation such as the bending of certain degree, guarantee that this compound heat radiation material can hug closely electronic components, fully guarantee area of contact and quick heat dissipation.
Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic partial cross-sectional view of the present invention;
fig. 3 is a schematic view of a metal grid according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. an upper surface protection layer; 2. an upper graphite heat conducting layer; 3. an upper tensile layer; 4. coating a uniform heat layer; 5. a central substrate layer; 6. a lower uniform heat layer; 7. a lower tensile layer; 8. a lower graphite heat conducting layer; 9. a lower surface protective layer; 10. a metal mesh grid.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "open", "upper", "lower", "top", "middle", "inner", and the like, indicate positional or orientational relationships and are used merely for convenience in describing the utility model and for simplicity in description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
Referring to fig. 1-3, the present invention is a graphite sheet composite heat dissipation material for electronic products, which comprises an upper surface protection layer 1, an upper graphite heat conduction layer 2, an upper stretching-resistant layer 3, an upper soaking layer 4, a central substrate layer 5, a lower soaking layer 6, a lower stretching-resistant layer 7, a lower graphite heat conduction layer 8 and a lower surface protection layer 9, which are tightly overlapped and compounded from top to bottom; the composite heat dissipation material is in a symmetrical structure relative to the central base material layer 5; all the layers of the composite heat dissipation material are tightly attached through an adhesive; the centers of the upper stretching-resistant layer 3 and the lower stretching-resistant layer 7 are compounded with metal grids 10, and heat-conducting silicone grease is filled in gaps among the metal grids 10.
In one embodiment, the material of the upper surface protection layer 1 and the lower surface protection layer 9 is the same, the outer surfaces of the upper surface protection layer 1 and the lower surface protection layer 9 are smooth, the upper surface protection layer 1 and the lower surface protection layer 9 are both made of heat-conducting rubber, and the upper surface protection layer 1 and the lower surface protection layer 9 are used for protecting the material in the center while conducting heat.
In an embodiment, for the above-mentioned upper graphite heat conduction layer 2 and lower graphite heat conduction layer 8, which are heat conduction film layers made by composite pressing of graphite sheets, the upper graphite heat conduction layer 2 and lower graphite heat conduction layer 8 are used for continuously transferring the heat transferred by the surface protection layer, so as to ensure the efficiency of heat transfer and improve the heat dissipation effect of the whole material.
In practical application, the upper soaking layer 4 and the lower soaking layer 6 are made of copper foils, and the heat conductivity coefficient of the upper soaking layer 4 and the heat conductivity coefficient of the lower soaking layer 6 are larger than the heat conductivity coefficient of the layered materials at the two sides of the upper soaking layer 4 and the lower soaking layer 6, so that heat conducted to the soaking layers can be transversely conducted among layers, and the heat is uniformly dispersed in a larger range and then is transferred to the layered materials at the two sides, so that the heat transfer area is fully increased, and the heat dissipation effect is improved.
In one embodiment, an elastic heat-conducting rubber layer is attached to both sides of the metal mesh grid 10 of the upper tensile layer 3 and the lower tensile layer 7, and the elastic heat-conducting rubber layer and the metal mesh grid 10 are combined to provide the tensile strength of the composite heat dissipation material.
In one embodiment, the central substrate layer 5 is a substrate layer made of copper foil, and the thickness of the central substrate layer 5 is 30 to 50 μm.
In summary, according to the technical scheme of the utility model, when the composite heat dissipation material is used, the material is coated on a required heat dissipation part, and the laminated structure of the composite heat dissipation material is completely symmetrical, so that the heat transfer distance and the heat transfer path from the two sides of the composite material are the same, the composite heat dissipation material can be used without distinguishing the front side and the back side, and the composite heat dissipation material is convenient for operators to use; the heat transfer path of the composite heat dissipation material keeps the paths of an upper surface protection layer 1, an upper graphite heat conduction layer 2, an upper stretching-resistant layer 3, an upper soaking layer 4, a central substrate layer 5, a lower soaking layer 6, a lower stretching-resistant layer 7, a lower graphite heat conduction layer 8 and a lower surface protection layer 9; the upper surface protection layer 1 and the lower surface protection layer 9 are used for protecting the central material while conducting heat; the heat conducted by the surface protection layer is continuously transferred through the graphite sheet layer structures of the upper graphite heat conduction layer 2 and the lower graphite heat conduction layer 8, so that the heat transfer efficiency is ensured, and the heat dissipation effect of the whole material is improved; the heat conducted to the uniform heating layer can be transversely conducted among layers by the aid of the large heat conduction coefficients of the upper uniform heating layer 4 and the lower uniform heating layer 6, and is uniformly dispersed in a large range and then transferred to the layered materials on the two sides, so that the heat transfer area is fully increased, and the heat dissipation effect is improved; because the lamellar structure of last tensile layer 3 and tensile layer 7 down comprises the metal net bars 10 that is filled with heat conduction silicone grease and the elasticity heat conduction rubber layer of metal net bars 10 both sides, make this kind of material can produce the deformation of certain degree under the effect of metal net bars 10, and keep deformation in safe range through elasticity heat conduction rubber layer, make when the heat conduction radiating effect of tensile layer 3 and tensile layer 7 down is gone up in the assurance, provide tensile strength, so that this kind of composite heat radiation material can carry out deformation such as the bending of certain degree, guarantee that this composite heat radiation material can hug closely electronic components, fully guarantee area of contact and quick heat dissipation.
Has the advantages that: this kind of electronic product graphite flake composite heat dissipation material, because this kind of composite heat dissipation material's lamellar structure is complete symmetry for heat transfer distance and route homogeneous phase from this kind of composite material both sides are the same, make need not to distinguish the positive and negative and can use this kind of composite heat dissipation material, make things convenient for operating personnel's use.
This kind of compound heat radiation material of electronic product graphite flake, because the lamellar structure of last stretch-proofing layer 3 and stretch-proofing layer 7 down comprises the metal net bars 10 that is filled with heat conduction silicone grease and the elasticity heat conduction rubber layer of metal net bars 10 both sides, make this kind of material can produce the deformation of certain degree under the effect of metal net bars 10, and keep deformation in safe range through elasticity heat conduction rubber layer, make when stretch-proofing layer 3 and stretch-proofing layer 7's heat conduction radiating effect down in the assurance, provide tensile strength, so that this kind of compound heat radiation material can carry out deformation such as the bending of certain degree, guarantee that this compound heat radiation material can hug closely electronic components, fully guarantee area of contact and quick heat dissipation.
In the description of the present specification, reference to the description of "one embodiment," "an example," "a specific example" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended only to help illustrate the utility model. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and its practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (5)
1. The utility model provides an electronic product graphite flake composite heat dissipation material which characterized in that: the heat insulation and heat insulation composite material comprises an upper surface protection layer (1), an upper graphite heat conduction layer (2), an upper stretching-resistant layer (3), an upper heat-equalizing layer (4), a central substrate layer (5), a lower heat-equalizing layer (6), a lower stretching-resistant layer (7), a lower graphite heat conduction layer (8) and a lower surface protection layer (9) which are sequentially and closely overlapped and compounded from top to bottom;
the composite heat dissipation material is in a symmetrical structure relative to the central base material layer (5);
all the layers of the composite heat dissipation material are tightly attached through an adhesive;
the middle of the upper stretch-resistant layer (3) and the middle of the lower stretch-resistant layer (7) are compounded with metal grids (10), and heat-conducting silicone grease is filled in gaps among the metal grids (10).
2. The graphite sheet composite heat dissipation material for electronic products as recited in claim 1, wherein: the upper surface protection layer (1) and the lower surface protection layer (9) are made of the same material, and the outer surfaces of the upper surface protection layer (1) and the lower surface protection layer (9) are smooth.
3. The graphite sheet composite heat dissipation material for electronic products as recited in claim 1, wherein: the upper graphite heat conduction layer (2) and the lower graphite heat conduction layer (8) are heat conduction film layers made of graphite sheets through composite pressing, and the upper graphite heat conduction layer (2) and the lower graphite heat conduction layer (8) are formed.
4. The graphite sheet composite heat dissipation material for electronic products as recited in claim 1, wherein: elastic heat-conducting rubber layers are attached to two sides of the metal mesh grid (10) of the upper stretching-resistant layer (3) and the lower stretching-resistant layer (7), and the elastic heat-conducting rubber layers and the metal mesh grid (10) are combined to provide stretching-resistant strength of the composite heat dissipation material.
5. The graphite sheet composite heat dissipation material for electronic products as recited in claim 1, wherein: the central substrate layer (5) is a substrate layer made of copper foil, and the thickness of the central substrate layer (5) is 30-50 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122451646.XU CN215850022U (en) | 2021-10-12 | 2021-10-12 | Graphite flake composite heat dissipation material for electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122451646.XU CN215850022U (en) | 2021-10-12 | 2021-10-12 | Graphite flake composite heat dissipation material for electronic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215850022U true CN215850022U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122451646.XU Expired - Fee Related CN215850022U (en) | 2021-10-12 | 2021-10-12 | Graphite flake composite heat dissipation material for electronic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215850022U (en) |
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2021
- 2021-10-12 CN CN202122451646.XU patent/CN215850022U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220218 |