Graphene heat dissipation patch with edge covering design

Abstract

The utility model discloses a graphene heat dissipation patch with a wrapping edge design, and relates to the technical field of heat dissipation patches, the graphene heat dissipation patch comprises a heat dissipation patch main body, the heat dissipation patch main body comprises an artificial graphite layer and an aluminum foil coated graphene composite heat conduction layer, and the top of the aluminum foil coated graphene composite heat conduction layer is provided with a PET protection layer; the bottom of the PET protective layer is provided with an artificial graphite layer, the top of the PET protective layer is provided with a first adhesion layer, the top of the artificial graphite layer is provided with a second adhesion layer, and the bottom of the aluminum foil coated graphene composite heat conduction layer is bonded with the second adhesion layer. The first adhesion layer and the covering edge of the PET protection layer can be adhered together to cover the artificial graphite layer, so that the effect of preventing the artificial graphite from falling off during use is achieved, the problem that the artificial graphite is used in a high-temperature environment to cause the falling off of the artificial graphite is solved, and the practical performance of the heat dissipation patch is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heat dissipation patch, concretely to a graphene heat dissipation patch with edge covering design. BACKGROUND

[0002] Most of the existing heat dissipation patches use artificial graphite or natural graphite, artificial graphite and natural graphite have typical lamellar crystal structure, and the layers are only combined by weak van der waals force, this structure makes the layers relatively easy to slide and separate, when subjected to external force, such as friction, collision or bending, the interlayer binding force is easy to be damaged, leading to some graphite layers falling off from the whole, forming the phenomenon of falling off;

[0003] And when artificial graphite or natural graphite is used in high temperature environment, the thermal expansion coefficient of graphite is different, the interlayer stress will change, which may further weaken the interlayer binding force, thus increasing the possibility of falling off. SUMMARY

[0004] In view of the above problems, the utility model provides a graphene heat dissipation patch with edge covering design, which solves the above problems.

[0005] To achieve the above object, the utility model provides the following technical scheme: a graphene heat dissipation patch with edge covering design, including heat dissipation patch main part, the heat dissipation patch main part includes artificial graphite layer and aluminum foil covers graphene composite heat conduction layer, the top of aluminum foil covers graphene composite heat conduction layer is equipped with PET protection layer;

[0006] The bottom of artificial graphite layer is equipped with first adhesion layer, the top of artificial graphite layer is equipped with second adhesion layer, and the bottom of aluminum foil covers graphene composite heat conduction layer is bonded with second adhesion layer.

[0007] The size of first adhesion layer and PET protection layer is consistent, the size of first adhesion layer and PET protection layer is greater than artificial graphite layer, and the part size of first adhesion layer and PET protection layer greater than artificial graphite layer is the edge covering.

[0008] Preferably, the size of artificial graphite layer, aluminum foil covers graphene composite heat conduction layer and second adhesion layer is consistent.

[0009] Preferably, the sum of the edge covering of first adhesion layer and PET protection layer is greater than the sum of the thickness of artificial graphite layer, aluminum foil covers graphene composite heat conduction layer and second adhesion layer.

[0010] Preferably, first adhesion layer and second adhesion layer are both graphene double-sided adhesive.

[0011] Preferably, the bottom of the PET protective layer is provided with a third adhesive layer, and after the heat dissipation patch body is attached to the heat source by compression, the edge-enclosed bottom of the PET protective layer is attached to the edge-enclosed top of the first adhesive layer.

[0012] Preferably, the top of the first adhesive layer is provided with a support frame, and the top of the support frame is attached to the PET protective layer.

[0013] Preferably, the material of the support frame is graphene foam.

[0014] Compared with the prior art, the graphiteene heat dissipation patch has the following beneficial effects:

[0015] The graphiteene heat dissipation patch has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an overall cross-sectional structure schematic view of the embodiment one of the present application;

[0017] Figure 2 It is an overall cross-sectional structure schematic view of the embodiment one of the present application;

[0018] Figure 3 It is an overall cross-sectional structure schematic view of the embodiment one of the present application;

[0019] The figure annotation description: 1, heat dissipation patch body; 2, first adhesive layer; 3, artificial graphite layer; 4, second adhesive layer; 5, aluminum foil covered graphene composite heat conduction layer; 6, PET protective layer; 601, third adhesive layer; 7, edge-enclosed; 8, support frame. DETAILED DESCRIPTION

[0020] The embodiment of the present application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0021] Example one: please refer to Figure 1 、 Figure 2 A graphene heat dissipation patch with edge-enclosed design, comprising a heat dissipation patch body 1, the heat dissipation patch body 1 comprising an artificial graphite layer 3 and an aluminum foil covered graphene composite heat conduction layer 5, the top of the aluminum foil covered graphene composite heat conduction layer 5 being provided with a PET protective layer 6;

[0022] The bottom of the artificial graphite layer 3 is provided with the first adhesive layer 2, and the top of the artificial graphite layer 3 is provided with the second adhesive layer 4, and the bottom of the aluminum foil covered graphene composite heat conduction layer 5 is bonded with the second adhesive layer 4. In the production of the graphene heat dissipation patch, the first adhesive layer 2, the artificial graphite layer 3, the second adhesive layer 4, the aluminum foil covered graphene composite heat conduction layer 5 and the PET protective layer 6 are sequentially arranged from bottom to top, and are pre-pressed, then the heat dissipation patch is placed in a hot press, and heat pressing is performed under certain temperature, pressure and time conditions. The pressure should be moderate to ensure that the layers can be closely combined, but the material structure will not be damaged. Finally, after the heat pressing is completed, the heat dissipation patch is slowly cooled to room temperature, so that the connection part is shaped;

[0023] It should be noted that the cooling speed also affects the connection quality. Too fast cooling may increase internal stress and affect the stability of the connection;

[0024] The first adhesive layer 2 and the PET protective layer 6 are the same size, and the size of the first adhesive layer 2 and the PET protective layer 6 is larger than that of the artificial graphite layer 3. The part of the first adhesive layer 2 and the PET protective layer 6 larger than the artificial graphite layer 3 is the edge wrapping 7.

[0025] The artificial graphite layer 3, the aluminum foil covered graphene composite heat conduction layer 5 and the second adhesive layer 4 are the same size.

[0026] The sum of the edge wrapping 7 of the first adhesive layer 2 and the PET protective layer 6 is greater than the sum of the thicknesses of the artificial graphite layer 3, the aluminum foil covered graphene composite heat conduction layer 5 and the second adhesive layer 4. When the heat dissipation patch is attached to the heat source, the bottom of the PET protective layer 6 on the top of the heat dissipation patch and the edge wrapping 7 on the top of the first adhesive layer 2 will be in contact. At this time, the adhesive surfaces of the first adhesive layer 2 and the PET protective layer 6 will be bonded to each other. It should be noted that the PET protective layer 6 and the first adhesive layer 2 are bonded at this time, and the edge wrapping 7 of the two is used to wrap the artificial graphite layer 3, the aluminum foil covered graphene composite heat conduction layer 5 and the second adhesive layer 4, thereby preventing the artificial graphite or natural graphite from falling off when used in a high temperature environment;

[0027] It needs to be further explained that the layers of artificial graphite and natural graphite are combined by weak van der Waals force (van der Waals force is a weak electrostatic attraction existing between molecules, which has no directionality and saturation, and its essence is the interaction between the instantaneous dipoles of molecules, the electrons in the molecules are constantly moving, and the uneven distribution of electron cloud occurs instantaneously, thus generating instantaneous dipoles, which can induce adjacent molecules to also generate dipoles, thereby generating an attractive force between the molecules), so that artificial graphite and natural graphite will have the problem of falling off, the present application is illustrated by setting artificial graphite, but it needs to be particularly pointed out that the present application is not only suitable for the heat dissipation patch of artificial graphite, but also suitable for natural graphite and other graphites that may have the problem of falling off.

[0028] The first adhesive layer 2 and the second adhesive layer 4 are both graphene double-sided adhesive, which is a high-performance double-sided adhesive with graphene as the main component or additive. It is usually made by mixing graphene material with adhesive matrix. The graphene double-sided adhesive has excellent thermal conductivity, can quickly conduct heat, and helps to solve the heat dissipation problem in the field of electronic equipment.

[0029] The bottom of the PET protective layer 6 is provided with a third adhesive layer 601, and after the heat dissipation patch main body 1 is pasted and pressed against the heat source, the bottom of the edge 7 of the PET protective layer 6 is bonded to the top of the edge 7 of the first adhesive layer 2.

[0030] Embodiment two: please refer to Figure 3 The top of the first adhesive layer 2 is provided with a support frame 8, and the top of the support frame 8 is bonded to the PET protective layer 6. The support frame 8 is bonded to the first adhesive layer 2 and the PET protective layer 6 together, so that the support frame 8 covers the artificial graphite layer 3, the aluminum foil covered graphene composite heat conducting layer 5 and the second adhesive layer 4 therebetween, so as to prevent the problem of falling off of artificial graphite or natural graphite.

[0031] The material of the support frame 8 is graphene foam, which is a new type of material with graphene as the main component or additive. It is composed of graphene and polymer matrix material through certain preparation process. It is made by in-situ polymerization method, which is to mix graphene or its precursor with polymer monomer, and initiate polymerization reaction under certain conditions, so that graphene is uniformly dispersed in the polymer matrix to form graphene foam.

[0032] It has certain flexibility and elasticity, and when it tightly wraps artificial graphite or natural graphite, it can form a continuous physical barrier on the surface of the graphite, which can limit the falling of the graphite chips inside the foam and prevent them from falling outside.

[0033] When the present application is used:

[0034] First, in the production of graphene heat dissipation patch, first from bottom to top in turn for the first adhesive layer 2, artificial graphite layer 3, the second adhesive layer 4, aluminum foil covered graphene composite heat conduction layer 5, PET protective layer 6 is placed in a neat and pre-press, then the heat dissipation patch is put into the hot press, under certain temperature, pressure and time conditions for hot pressing treatment, the size of the pressure should be moderate, to ensure that the layers can be closely combined, but also not to damage the material structure, finally, the heat pressing is completed, the heat dissipation patch is slowly cooled to room temperature, so that the connecting part is shaped;

[0035] Then, example one: when the heat dissipation patch is pasted to the heat source compression, the bottom of the PET protective layer 6 at the top of the heat dissipation patch and the edge 7 at the top of the first adhesive layer 2 are in contact, at this time, the adhesive surface of the first adhesive layer 2 and the PET protective layer 6 will be bonded to each other, note that the PET protective layer 6 and the first adhesive layer 2 are bonded at this time, and the edge 7 of the two is used to cover the artificial graphite layer 3 and the aluminum foil covered graphene composite heat conduction layer 5 and the second adhesive layer 4, thereby preventing the artificial graphite or natural graphite from falling off when used in high temperature environment;

[0036] Finally, example two: the support frame 8 is bonded with the first adhesive layer 2 and the PET protective layer 6, so that the support frame 8 covers the artificial graphite layer 3 and the aluminum foil covered graphene composite heat conduction layer 5 and the second adhesive layer 4 between them, so as to prevent the artificial graphite or natural graphite from falling off, the graphene foam has certain flexibility and elasticity, when tightly wrapping the artificial graphite or natural graphite, a continuous physical barrier can be formed on the surface of the artificial graphite or natural graphite, which can limit the graphite chips that may fall off in the foam and prevent them from scattering outward.

[0037] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A graphene heat dissipation patch with a beaded design, comprising a heat dissipation patch body (1), characterized in that: The heat dissipation patch body (1) comprises an artificial graphite layer (3) and an aluminum foil covered graphene composite heat conduction layer (5), and the top of the aluminum foil covered graphene composite heat conduction layer (5) is provided with a PET protective layer (6). The bottom of the artificial graphite layer (3) is provided with a first adhesive layer (2), the top of the artificial graphite layer (3) is provided with a second adhesive layer (4), and the bottom of the aluminum foil covered graphene composite heat conduction layer (5) is bonded with the second adhesive layer (4). The first adhesive layer (2) is consistent in size with the PET protective layer (6), the size of the first adhesive layer (2) and the PET protective layer (6) is larger than that of the artificial graphite layer (3), and the part of the first adhesive layer (2) and the PET protective layer (6) larger than the artificial graphite layer (3) is a package edge (7).

2. The graphene heat spreader patch with a beaded design of claim 1, wherein: The artificial graphite layer (3) and the aluminum foil covered graphene composite heat conduction layer (5) and the second adhesive layer (4) are consistent in size.

3. The graphene heat spreader patch with a beaded design of claim 1, wherein: The sum of the package edges (7) of the first adhesive layer (2) and the PET protective layer (6) is greater than the sum of the thicknesses of the artificial graphite layer (3), the aluminum foil covered graphene composite heat conduction layer (5) and the second adhesive layer (4).

4. The graphene heat spreader patch with a beaded design of claim 1, wherein: The first adhesive layer (2) and the second adhesive layer (4) are both graphene double-sided adhesive.

5. The graphene heat spreader patch with a beaded design of claim 1, wherein: The bottom of the PET protective layer (6) is provided with a third adhesive layer (601), after the heat dissipation patch body (1) is attached to the heat source and pressed, the bottom of the package edge (7) of the PET protective layer (6) is bonded with the top of the package edge (7) of the first adhesive layer (2).

6. The graphene heat spreader patch of claim 5, further comprising: The top of the first adhesive layer (2) is provided with a support frame (8), and the top of the support frame (8) is bonded with the PET protective layer (6).

7. The graphene heat spreader patch with a beaded design of claim 6, wherein: The material of the support frame (8) is graphene foam.

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