CN206341549U

CN206341549U - One kind radiating graphite flake

Info

Publication number: CN206341549U
Application number: CN201720030149.3U
Authority: CN
Inventors: 吕润庆
Original assignee: Dongguan City Union One Electronic Technology Co Ltd
Current assignee: Dongguan City Union One Electronic Technology Co Ltd
Priority date: 2017-01-11
Filing date: 2017-01-11
Publication date: 2017-07-18
Anticipated expiration: 2027-01-11

Abstract

The utility model discloses one kind radiating graphite flake, using graphene layer as body substrate, and graphene layer is designed as I-shaped, in one layer of heat conductive insulating silica gel piece of upper and lower ends Surface coating of the graphene layer of I-shaped, and coat one layer of PU foamed cotton in heat-conducting insulating silicon film face, the inside two sides of the graphene layer of I-shaped coat one layer of heat conduction copper foil layer by adhesive, one layer of PET film layer is coated by conducting resinl on heat conduction copper foil layer surface, graphene layer is designed as I-shaped, increase its outer layer area of dissipation, radiating effect is maximized, and in one layer of heat conductive insulating silica gel piece of upper and lower ends Surface coating, play insulation effect, foamed cotton has separated foam structure, thermal diffusivity is good, compressibility is good, the structure of its internal layer passes through heat conduction copper foil layer and conductive paste, with good insulation effect, also radiation protection, reduce the radiation effects to human body, it is avoided that the powdered graphite of graphene layer is scattering into equipment.

Description

One kind radiating graphite flake

Technical field

The utility model is related to technical field of heat dissipation, is specially a kind of radiating graphite flake.

Background technology

As electronic device and product are to the development of high integration, dissipated power doubles therewith, and thermovent benefit turns into one Individual letter problem to be solved, heat dissipation problem is to limit one of bottleneck of field development.

Graphite flake has good heat conductivility, far above metals such as metallic copper aluminium, and with other Heat Conduction Materials not The i.e. two-dimentional heat conduction directionality of the thermal conduction characteristic possessed, provides good passage of heat on two-dimensional surface.But the application of graphite flake There are problems that：Graphite flake is frangible, poor toughness, and dry linting and phenomenon of rupture easily occurs in low intensity, may cause functional fault Deng.In addition, in the prior art, being generally pasted with a film in the one side of graphite heat radiation fin, to reduce its electric conductivity, insulation is reached Effect, film generally uses the film of white clear, however, because the film of white clear is brighter, its reflective ratio Preferably, thus its reflection light be easy to cause product bad influence, so that the performance of product will certainly be influenceed, very Its service life can extremely be shortened, very big inconvenience, and the structure of general graphite flake are brought to enterprise, radiating effect can not be sent out Wave best.

Utility model content

To achieve the above object, the utility model provides following technical scheme：One kind radiating graphite flake, using graphene layer as Body substrate, and graphene layer is designed as I-shaped, in the upper and lower ends Surface coating one of the graphene layer of I-shaped Layer heat conductive insulating silica gel piece, and coat one layer of PU foamed cotton, the graphite of the I-shaped in heat-conducting insulating silicon film face The inside two sides of alkene layer coat one layer of heat conduction copper foil layer by adhesive, are coated on heat conduction copper foil layer surface by conducting resinl One layer of PET film layer.

As a kind of preferred scheme of the utility model, symmetrical structure centered on the graphene layer of the I-shaped.

As a kind of preferred scheme of the utility model, the thickness of the heat conduction copper foil layer is 0.06-0.08mm.

As a kind of preferred scheme of the utility model, the thickness of the heat conductive insulating silica gel piece is 0.08-0.12mm.

Compared with prior art, the beneficial effects of the utility model are：Graphene layer is designed as I-shaped, increased outside it Layer area of dissipation, radiating effect is maximized, and in one layer of heat conductive insulating silica gel piece of upper and lower ends Surface coating, play insulation Effect, and thermal diffusivity is not influenceed, and by outer layer protection structure of the foamed cotton as heat conduction, with separated foam structure, Density is small, flexible, and thermal diffusivity is good, and compressibility is good, and the structure of its internal layer is by heat conduction copper foil layer and conductive paste, with good Good insulation effect, also radiation protection, reduce neat in edge after the radiation effects to human body, cross cutting, without dust, energy The powdered graphite of graphene layer is avoided to be scattering into equipment, outermost layer is encapsulated by PET film layer, reduces its electric conductivity.

Brief description of the drawings

Fig. 1 is the utility model structural representation；

In figure：1- graphene layers；2- heat conductive insulating silica gel pieces；3- adhesive；4-PU foamed cottons；5- heat conduction copper foil layers；6- Conducting resinl；7-PET film layers.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belongs to the scope of the utility model protection.

Embodiment：

Referring to Fig. 1, the utility model provides a kind of technical scheme：One kind radiating graphite flake, based on graphene layer 1 Basic unit, and graphene layer 1 is designed as I-shaped, in one layer of the upper and lower ends Surface coating of the graphene layer 1 of I-shaped Heat conductive insulating silica gel piece 2, and in heat conductive insulating silica gel piece 2 Surface coating, one layer of PU foamed cotton 4, the graphite of the I-shaped The inside two sides of alkene layer 1 coat one layer of heat conduction copper foil layer 5 by adhesive 3, and conducting resinl is passed through on the surface of heat conduction copper foil layer 5 6 one layer of cladding PET film layers 7.

Symmetrical structure centered on the graphene layer 1 of the I-shaped, the thickness of the heat conduction copper foil layer 5 is 0.06- 0.08mm, the thickness of the heat conductive insulating silica gel piece 2 is 0.08-0.12mm.

Heat conductive insulating silica gel piece：It is the various auxiliary materials such as addition metal oxide using silica gel as base material, is closed by special process Into a kind of heat-conducting medium material, be exclusively for using gap transmit heat design production, can blind, complete The heat transfer of heating position and radiating part interdigit, while also acting as the effect such as insulation, damping, sealing, disclosure satisfy that equipment is small-sized Change and the design requirement of ultrathin, are great manufacturability and usability, and thickness is applied widely, is that a kind of splendid heat conduction is filled out Fill material.With the effect such as insulation, heat conduction, wear-resisting, fire-retardant, filling gap, incompressible, buffering.

Specifically used mode and advantage：Graphene layer is designed as I-shaped, increases its outer layer area of dissipation, radiating is imitated Fruit maximizes, and in one layer of heat conductive insulating silica gel piece of upper and lower ends Surface coating, plays insulation effect, and does not influence radiating Property, and by outer layer protection structure of the foamed cotton as heat conduction, with separated foam structure, density is small, flexible, thermal diffusivity Good, compressibility is good, and the structure of its internal layer, with good insulation effect, is also prevented by heat conduction copper foil layer and conductive paste Radiation effects, reduces neat in edge after the radiation effects to human body, cross cutting, without dust, is avoided that the graphite of graphene layer Powder is scattering into equipment, and outermost layer is encapsulated by PET film layer, reduces its electric conductivity.

It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation Involved claim.

Claims

1. one kind radiating graphite flake, it is characterised in that：With graphene layer（1）For body substrate, and by graphene layer（1）It is designed as I-shaped, in the graphene layer of I-shaped（1）One layer of heat conductive insulating silica gel piece of upper and lower ends Surface coating（2）, and In heat conductive insulating silica gel piece（2）One layer of PU foamed cotton of Surface coating（4）, the graphene layer of the I-shaped（1）Inside two Side passes through adhesive（3）Coat one layer of heat conduction copper foil layer（5）, in heat conduction copper foil layer（5）Surface passes through conducting resinl（6）Cladding One layer of PET film layer（7）.

2. a kind of radiating graphite flake according to claim 1, it is characterised in that：The graphene layer of the I-shaped（1） Centered on symmetrical structure.

3. a kind of radiating graphite flake according to claim 1, it is characterised in that：The heat conduction copper foil layer（5）Thickness be 0.06-0.08mm。

4. a kind of radiating graphite flake according to claim 1, it is characterised in that：The heat conductive insulating silica gel piece（2）Thickness Spend for 0.08-0.12mm.