CN209643236U - A kind of folded-edge heat conductive graphite piece - Google Patents
A kind of folded-edge heat conductive graphite piece Download PDFInfo
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- CN209643236U CN209643236U CN201822121558.1U CN201822121558U CN209643236U CN 209643236 U CN209643236 U CN 209643236U CN 201822121558 U CN201822121558 U CN 201822121558U CN 209643236 U CN209643236 U CN 209643236U
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- copper foil
- graphite
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- folded
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Abstract
The utility model belongs to graphite flake technical field more particularly to a kind of folded-edge heat conductive graphite piece, including graphite flake composite construction and is coated on the binding structure of graphite flake composite construction；Graphite flake composite construction includes the first copper foil layer stacked gradually by upper surface to lower surface, the first graphite linings, thermally conductive pressure-sensitive adhesive layer, the second graphite linings, the second copper foil layer, acrylate glue-line and release film layer, first copper foil layer is provided with the first protrusion, thermally conductive varistor layer is provided with the second protrusion, second copper foil layer is provided with third protrusion, and the second copper foil layer is provided with anti-skidding groove；Binding structure includes the heat conduction silicone stacked gradually by inner surface to outer surface and polyimide film, heat conduction silicone is provided with air channel, the bottom of air channel is provided with the first air hole, and the both ends of air channel are additionally provided with skewed slot, and polyimide film is provided with the second air hole.Compared with the prior art, the utility model has the advantages that being not easy to lose powder, good toughness, intensity is high.
Description
Technical field
The utility model belongs to graphite flake technical field more particularly to a kind of folded-edge heat conductive graphite piece.
Background technique
Development with electronic device and from product to high integration, dissipated power double therewith, and heat dissipation has become one
A problem to be solved, heat dissipation problem are one of the bottlenecks for limiting field development, and graphite flake has good heating conduction, are closed
It is up to 1500W/mk at graphite flake thermal conductivity, much higher than metals such as metallic copper aluminium, and there are other Heat Conduction Materials not have
Thermal conduction characteristic be the thermally conductive directionality of two dimension, good passage of heat is provided on two-dimensional surface.
At present there is many in common heat conductive graphite piece, and heat conductive graphite piece is easy to appear showing for picking and fracture
As graphite flake is fragile, and poor toughness, intensity is low, be easy to cause the electronic product failure using graphite flake, and high quality
Graphite flake processing cost it is relatively high the problems such as, thus it is proposed that a kind of folded-edge heat conductive graphite piece.
Utility model content
The purpose of this utility model is that: in view of the deficiencies of the prior art, and a kind of folded-edge heat conductive graphite piece is provided, had
Standby to be not easy to lose powder, the advantages that good toughness, intensity is high, the electronic product for solving high thermal conductivity graphite flake is easy since bound edge is not firm
It is damaged to there is picking, and electronic product is caused to break down, the relatively high problem of the graphite flake processing cost of high quality.
To achieve the goals above, the utility model uses following technical scheme:
A kind of folded-edge heat conductive graphite piece including graphite flake composite construction and is coated on the graphite flake composite construction
The binding structure of side, top edge and lower edge area；The graphite flake composite construction includes by upper surface to lower surface successively layer
Folded the first copper foil layer, the first graphite linings, thermally conductive pressure-sensitive adhesive layer, the second graphite linings, the second copper foil layer, acrylate glue-line and from
Type film layer, the lower surface of first copper foil layer are provided with the first protrusion, and the upper and lower surfaces of the thermally conductive varistor layer are equal
It is provided with the second protrusion, the upper surface of second copper foil layer is provided with third protrusion, and the lower surface of second copper foil layer is set
It is equipped with anti-skidding groove；The binding structure includes the heat conduction silicone stacked gradually by inner surface to outer surface and polyimide film
Layer, the heat conduction silicone are provided with air channel, and the bottom of the air channel is provided with the first air hole, and the two of the air channel
End is additionally provided with skewed slot, and the polyimide film is provided with the second air hole corresponding with first air hole.
As a kind of improvement of folded-edge heat conductive graphite piece described in the utility model, the thickness of the thermally conductive pressure-sensitive adhesive layer
For 0.02 ~ 0.1mm, if the thickness of thermally conductive pressure-sensitive adhesive layer is blocked up to reduce heat transfer efficiency.
As a kind of improvement of folded-edge heat conductive graphite piece described in the utility model, first copper foil layer and described
The distance of marginal position of the marginal position of two copper foil layers beyond first graphite linings and second graphite linings is 1 ~ 3mm.
As a kind of improvement of folded-edge heat conductive graphite piece described in the utility model, first copper foil layer and described
The thickness of two copper foil layers is 1 ~ 8mm.
As a kind of improvement of folded-edge heat conductive graphite piece described in the utility model, first graphite linings and described
The thickness of two graphite linings is 2 ~ 15mm.
As a kind of improvement of folded-edge heat conductive graphite piece described in the utility model, the skewed slot is ventilative with described first
Hole is connected by the air channel.
Compared with the prior art, the utility model has the beneficial effects that:
1) the utility model is respectively provided with the first copper foil layer and second in the two sides of the first graphite linings and the second graphite linings
Copper foil layer carries out comprehensive protection to frangible graphite linings in this way, reduces its probability for being oppressed damage；And this is practical
Novel graphite flake composite construction is related to rationally, effectively increasing graphite flake integral strength, improves its toughness and bending property, just
In subsequent cross cutting and punch process；
2) the utility model is by increasing separately the area of the two sides film layer of the first graphite linings and the second graphite linings, and
Binding structure is arranged in the edge of graphite flake composite construction, can effectively prevent the graphite powder and stone of graphite flake in use in this way
Black particle falls off, to improve the reliability of graphite flake；
3) the utility model contacts on the surface that copper foil layer and graphite linings contact and graphite linings with thermally conductive pressure-sensitive adhesive layer
Several protrusions are arranged in surface, can effectively increase binding force between copper foil layer and graphite linings and graphite linings and thermally conductive pressure in this way
Binding force between quick glue-line improves adhesive effect, and graphite is avoided to generate lamination and influence heat conduction and heat radiation performance；Exist simultaneously
Anti-skidding groove is arranged in the contact surface of second copper foil layer and acrylate glue-line, can be improved the second copper foil layer and acrylic adhesive
The adhesive effect of layer；
4) binding structure is arranged at the edge of graphite flake composite construction in the utility model, the heat conduction silicone in binding structure
Conductive force is all played with polyimide film, and heat conduction silicone and polyimide film are provided with air hole, In
In use, the hot gas generated can be discharged by the first air hole from the second air hole, if hot gas is obstructed and can not be passed through
When second air hole is discharged, hot gas can be also discharged by skewed slot again from air channel, improve heat conduction and heat radiation effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of heat conduction silicone in the utility model.
Wherein: the first copper foil layer of 1-, the first graphite linings of 2-, the thermally conductive pressure-sensitive adhesive layer of 3-, the second graphite linings of 4-, the second copper foil of 5-
Layer, 6- acrylate glue-line, 7- release film layer, 8- heat conduction silicone, 9- polyimide film, the first protrusion of 11-, 31- second
Protrusion, 51- third protrusion, the anti-skidding groove of 52-, 81- air channel, the first air hole of 82-, 83- skewed slot, the second air hole of 91-.
Specific embodiment
With reference to embodiment and Figure of description, the utility model is described in further detail, but this
The embodiment of utility model is not limited to this.
As shown in Figure 1 and 2, a kind of folded-edge heat conductive graphite piece, including graphite flake composite construction and to be coated on graphite flake multiple
Close the side of structure, the binding structure of top edge and lower edge area；Graphite flake composite construction include by upper surface to lower surface according to
The first copper foil layer 1, the first graphite linings 2, thermally conductive pressure-sensitive adhesive layer 3, the second graphite linings 4, the second copper foil layer 5, acrylic acid of secondary stacking
Ester gum layer 6 and release film layer 7, the lower surface of the first copper foil layer 1 are provided with the first protrusion 11, and the upper surface of thermally conductive varistor layer is under
Surface is provided with the second protrusion 31, and the upper surface of the second copper foil layer 5 is provided with third protrusion 51, the following table of the second copper foil layer 5
Face is provided with anti-skidding groove 52；Binding structure includes that the heat conduction silicone 8 stacked gradually by inner surface to outer surface and polyamides are sub-
Amine film layer 9, heat conduction silicone 8 are provided with air channel 81, and the bottom of air channel 81 is provided with the first air hole 82, air channel 81
Both ends are additionally provided with skewed slot 83, and polyimide film 9 is provided with second air hole 91 corresponding with the first air hole 82.
Further, thermally conductive pressure-sensitive adhesive layer 3 with a thickness of 0.02 ~ 0.1mm, if the blocked up meeting of the thickness of thermally conductive pressure-sensitive adhesive layer 3
Reduce heat transfer efficiency.
Further, the marginal position of the first copper foil layer 1 and the second copper foil layer 5 exceeds the first graphite linings 2 and the second graphite
The distance of the marginal position of layer 4 is 1 ~ 3mm.
Further, the thickness of the first copper foil layer 1 and the second copper foil layer 5 is 1 ~ 8mm.
Further, the thickness of the first graphite linings 2 and the second graphite linings 4 is 2 ~ 15mm.
Further, skewed slot 83 is connected with the first air hole 82 by air channel 81.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is modified.Therefore, the utility model is not limited to above-mentioned specific embodiment, all this field skills
It is practical new that art personnel any conspicuous improvement made on the basis of the utility model, replacement or modification belong to this
The protection scope of type.In addition, these terms are intended merely to facilitate although using some specific terms in this specification
It is bright, any restrictions are not constituted to the utility model.
Claims (6)
1. a kind of folded-edge heat conductive graphite piece, it is characterised in that: including graphite flake composite construction and be coated on the graphite flake
The binding structure of the side of composite construction, top edge and lower edge area；The graphite flake composite construction include by upper surface under
The first copper foil layer that surface stacks gradually, the first graphite linings, thermally conductive pressure-sensitive adhesive layer, the second graphite linings, the second copper foil layer, acrylic acid
Ester gum layer and release film layer, the lower surface of first copper foil layer are provided with the first protrusion, the upper surface of the thermally conductive varistor layer
It is provided with the second protrusion with lower surface, the upper surface of second copper foil layer is provided with third protrusion, second copper foil layer
Lower surface be provided with anti-skidding groove；The binding structure include the heat conduction silicone that is stacked gradually by inner surface to outer surface and
Polyimide film, the heat conduction silicone are provided with air channel, and the bottom of the air channel is provided with the first air hole, described
The both ends of air channel are additionally provided with skewed slot, and it is ventilative that the polyimide film is provided with corresponding with first air hole second
Hole.
2. folded-edge heat conductive graphite piece according to claim 1, it is characterised in that: the thermally conductive pressure-sensitive adhesive layer with a thickness of
0.02~0.1mm。
3. folded-edge heat conductive graphite piece according to claim 1, it is characterised in that: first copper foil layer and described second
The distance of marginal position of the marginal position of copper foil layer beyond first graphite linings and second graphite linings is 1 ~ 3mm.
4. folded-edge heat conductive graphite piece according to claim 1, it is characterised in that: first copper foil layer and described second
The thickness of copper foil layer is 1 ~ 8mm.
5. folded-edge heat conductive graphite piece according to claim 1, it is characterised in that: first graphite linings and described second
The thickness of graphite linings is 2 ~ 15mm.
6. folded-edge heat conductive graphite piece according to claim 1, it is characterised in that: the skewed slot and first air hole
It is connected by the air channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822121558.1U CN209643236U (en) | 2018-12-18 | 2018-12-18 | A kind of folded-edge heat conductive graphite piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822121558.1U CN209643236U (en) | 2018-12-18 | 2018-12-18 | A kind of folded-edge heat conductive graphite piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209643236U true CN209643236U (en) | 2019-11-15 |
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ID=68474759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822121558.1U Active CN209643236U (en) | 2018-12-18 | 2018-12-18 | A kind of folded-edge heat conductive graphite piece |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111976239A (en) * | 2020-08-17 | 2020-11-24 | 苏州世沃电子科技有限公司 | Compound heat conduction graphite flake and rolling press device |
| CN112455038A (en) * | 2020-11-03 | 2021-03-09 | 东莞市鸿亿导热材料有限公司 | High heat conduction power graphite film |
| CN112662333A (en) * | 2020-12-28 | 2021-04-16 | 新昌县辰逸服饰有限公司 | Graphene heat conduction and dissipation film |
-
2018
- 2018-12-18 CN CN201822121558.1U patent/CN209643236U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111976239A (en) * | 2020-08-17 | 2020-11-24 | 苏州世沃电子科技有限公司 | Compound heat conduction graphite flake and rolling press device |
| CN112455038A (en) * | 2020-11-03 | 2021-03-09 | 东莞市鸿亿导热材料有限公司 | High heat conduction power graphite film |
| CN112662333A (en) * | 2020-12-28 | 2021-04-16 | 新昌县辰逸服饰有限公司 | Graphene heat conduction and dissipation film |
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