CN107953616A - The composite construction and its preparation process of a kind of conduction graphite film - Google Patents
The composite construction and its preparation process of a kind of conduction graphite film Download PDFInfo
- Publication number
- CN107953616A CN107953616A CN201710869318.7A CN201710869318A CN107953616A CN 107953616 A CN107953616 A CN 107953616A CN 201710869318 A CN201710869318 A CN 201710869318A CN 107953616 A CN107953616 A CN 107953616A
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- China
- Prior art keywords
- graphite film
- groove
- fixinig plate
- composite construction
- protrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 195
- 239000010439 graphite Substances 0.000 title claims abstract description 195
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 194
- 238000010276 construction Methods 0.000 title claims abstract description 77
- 239000002131 composite material Substances 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 48
- 229910052751 metal Inorganic materials 0.000 claims description 111
- 239000002184 metal Substances 0.000 claims description 111
- 239000003292 glue Substances 0.000 claims description 35
- 238000004891 communication Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 239000011889 copper foil Substances 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 239000002390 adhesive tape Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 107
- 150000002739 metals Chemical class 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 239000005030 aluminium foil Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B18/00—Layered products essentially comprising ceramics, e.g. refractory products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/18—Handling of layers or the laminate
- B32B38/1825—Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
- B32B38/1833—Positioning, e.g. registration or centering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/18—Handling of layers or the laminate
- B32B38/1866—Handling of layers or the laminate conforming the layers or laminate to a convex or concave profile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
- B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/041—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/302—Conductive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
Abstract
The present invention provides a kind of composite construction and its preparation process of conduction graphite film, and composite construction includes at least two pieces of fixinig plates and at least one layer of graphite film.The groove being recessed inwardly is offered respectively on the adjacent opposed facing side surface of two pieces of fixinig plates；Installation space is surrounded between two grooves, graphite film is installed in the installation space.The thermal conductivity factor of fixinig plate is more than the thermal conductivity factor of single double faced adhesive tape of graphite film bonding in existing die cutting technique.The preparation process of the composite construction includes being installed on graphite film in the groove of one piece of fixinig plate in advance；The groove of another piece of fixinig plate is set on the top surface of graphite film；The protrusion of the groove vicinity of adjacent two pieces of fixinig plates is fixedly connected by fastener.The composite construction can improve the heat conductivility of vertically upper conduction graphite film.Meanwhile at least one side wall of graphite film is surrounded by raised internal face, there is the phenomenon of dry linting in the side wall for avoiding graphite film.
Description
Technical field
The present invention relates to the technical field of heat sink material, and in particular to a kind of composite construction of conduction graphite film and its preparation
Technique.
Background technology
Conduction graphite film is widely used on electronic product and radiates because it is with good heat conductivility, for example,
Using in the electronic equipments such as laptop, mobile phone.
At present, the conduction graphite film being equipped with the electronic device is some when being single layer structure, is bonded graphite film by glue
On sheet metal, then by metal bonding film on the radiator of electronic equipment；If graphite film is sandwich construction, adjacent two kerbstone
By glue sticking between ink film, positioned at the bottom graphite film by glue sticking on sheet metal, positioned at the graphite film of top
Be connected to tabletting by gluing, to form Multi-layer graphite film composite construction, then by glue by metal bonding film dissipating in electronic equipment
On hot device.
Although the graphite film of said structure is fixed on a heat sink by glue, improve the heat dissipation performance of radiator；But by
Double faced adhesive tape is needed to fix between the graphite film of adjacent layer, or mono-layer graphite film is also required to double faced adhesive tape with sheet metal and can consolidate
It is fixed, but, since the heat conductivility of glue is much smaller than the heat conductivility of graphite film, along stacking on direction perpendicular to graphite film, folder
The miscellaneous glue in graphite film, the heat conductivility for causing graphite film is declined, especially the thermal conductivity between adjacent two layers graphite film
What can be declined is more serious, influences the heat dissipation performance of conduction graphite film.
The content of the invention
Therefore, the actual technical problem to be solved of the present invention is graphite film and sheet metal of the prior art, or
The defects of being fixed between adjoining graphite layer by glue sticking, causing graphite film heat conductivility poor.
For this reason, the present invention provides a kind of composite construction of conduction graphite film, including
Fixinig plate, is at least two pieces；Adjacent two pieces of fixinig plate buttons set fixation, divide on its opposed facing side surface
The groove being recessed inwardly is not offered, and installation space is surrounded between two grooves；Correspondingly, it is located on the fixinig plate
The part of the groove vicinity forms protrusion；The thermal conductivity factor of the fixinig plate is more than the thermal conductivity factor of glue；
Conduction graphite film, at least one layer；One layer of graphite film is adapted to mount in the installation space.
Preferably, the composite construction of above-mentioned conduction graphite film, the graphite film are at least two layers, and the fixinig plate is extremely
It is three pieces few；
On vertically, all fixinig plates stack setting, positioned at the lower surface of the fixinig plate of top
On offer the groove, offer the groove on the top surface of the fixinig plate of the bottom, remaining is described solid
The groove is offered in the both side surface of stator respectively；Institute is surrounded between two grooves of adjacent two pieces of fixinig plates
State installation space.
The graphite film is installed in the installation space correspondingly, and the graphite film of adjacent two layers is by described solid
Stator is kept apart.
It is further preferred that the composite construction of above-mentioned conduction graphite film, described convex along the width of the graphite film
At least one side wall risen is the first open ports being in communication with the outside；Or
Along the length direction of the graphite film, the raised at least one side wall is the second open ports being in communication with the outside.
Preferably, the composite construction of above-mentioned conduction graphite film, the installation space are closed housing, the graphite film
Surrounding is surrounded by the raised internal face.
Preferably, the composite construction of above-mentioned conduction graphite film, in adjacent two pieces of fixinig plates, the fixation above
The fastener that projects through of the raised and underlying fixinig plate of piece is removably secured and is connected；Or
In adjacent two pieces of fixinig plates, the raised lower surface of the fixinig plate above with it is underlying
It is adhesively fixed between the raised top surface of the fixinig plate by heat-curable glue.
Preferably, the composite construction of above-mentioned conduction graphite film, the fixinig plate are sheet metal.
It is further preferred that the composite construction of above-mentioned conduction graphite film, the sheet metal is copper foil, aluminium foil, silver foil, gold
Any one in paper tinsel, albronze, Kufil.
Preferably, the composite construction of above-mentioned conduction graphite film, vertically on, the groove is open relatively with it
Surface on offer at least one blind hole；It is compressed in positioned at the graphite film this described in groove in the blind hole, or
The part corresponding with the blind hole of graphite film described in person is embedded into the blind hole.
It is further preferred that the composite construction of above-mentioned conduction graphite film, the blind hole is at least two, all described blind
Hole is evenly distributed on the surface of the groove.
The present invention also provides a kind of preparation process of the composite construction of conduction graphite film, it is characterised in that including as follows
Step：
Graphite film is installed in the groove of one piece of fixinig plate in advance；
The groove of another piece of fixinig plate is set on the top of graphite film, and causes the convex of the groove vicinity of the fixinig plate
The lower surface risen is rested upon on the raised top surface of the groove vicinity of the fixinig plate of lower section；
The protrusion of adjacent two pieces of fixinig plates is fixedly connected by fastener；Alternatively, in advance in the lower surface or
Heat-curable glue is provided with top surface, it is described solid by adjacent two pieces when the lower surface is resisted against the top surface
The protrusion of stator is fixedly connected.
1. technical scheme, has the following advantages that：
1. the composite construction of conduction graphite film provided by the invention, including at least two pieces of fixinig plates and at least one layer of graphite
Film.The groove being recessed inwardly is offered respectively on the adjacent opposed facing side surface of two pieces of fixinig plates；Enclosed between two grooves
Into installation space, graphite film is installed in the installation space.Since the thermal conductivity factor of fixinig plate is more than in the prior art by graphite
The thermal conductivity factor of the glue of film bonding, the heat of heat conducting film are directly passed to fixinig plate, and fixinig plate passes to the external world again, so as to improve
The vertically heat conductivility of upper conduction graphite film；Meanwhile graphite film is limited in the installation space that two grooves surround, stone
At least one side wall of ink film is surrounded by the raised internal face, and the phenomenon of dry linting occurs in the side wall for avoiding graphite film.
2. the composite construction of conduction graphite film provided by the invention, graphite film is at least two layers, and fixinig plate is at least three pieces；
On vertically, all fixinig plates stack setting, are offered in the lower surface of the fixinig plate of top
The groove, the groove is offered on the top surface of the fixinig plate of the bottom, and the two of remaining fixinig plate
The groove is offered on side surface respectively；It is empty that the installation is surrounded between two grooves of adjacent two pieces of fixinig plates
Between.Graphite film is installed in the installation space correspondingly, and the graphite film of adjacent two layers is isolated by the fixinig plate
Open.The graphite film of multilayer is set in this composite construction, and graphite film is all limited in installation space, and the graphite film of adjacent two layers is all
Kept apart by fixinig plate, so that the composite construction of Multi-layer graphite film and fixinig plate is formed, to improve the heat conductivility of graphite film.
3. the composite construction of conduction graphite film provided by the invention, the mounting structure is closed housing, the four of graphite film
Week is surrounded by the internal face of the groove.The composite construction of this structure, when graphite film is installed in installation space, its surrounding
It is surrounded isolated from the outside world；Since graphite film is layer structure, in use for some time, there is pine in layer structure
Relax, its outer surface can come off powder, due to graphite it is conductive can, when the powder separated drops in the conduction of electronic equipment
On component so that short circuit phenomenon occurs in conductive component, influences the normal use of electronic equipment；In the technical program, pass through fixation
Piece surrounds the surrounding of heat conducting film, even if there is dry linting phenomenon, will not drop on the conductive component of electronic equipment, but limited
Make in installation space, so as to avoid electronic equipment because of short circuit phenomenon caused by graphite film dry linting, and then improve electronic equipment
While heat dissipation performance, extend the service life of electronic equipment.
4. the composite construction of conduction graphite film provided by the invention, in adjacent two pieces of fixinig plates, above is described solid
The groove vicinity of stator it is raised removable by fastener between the protrusion of the groove vicinity of the underlying fixinig plate
It is fixedly connected with unloading.Adjacent two pieces of fixinig plates are detachably connected by fastener, easy to the installation and removal maintenance mans of graphite film
Make；Meanwhile fixinig plate can also recycle.
5. the composite construction of conduction graphite film provided by the invention, fixinig plate is sheet metal.It is further preferred that sheet metal
For any one in copper foil, aluminium foil, silver foil, goldleaf, albronze, Kufil.Fixinig plate is made of metal material,
Increase the heat conductivility of fixinig plate, further improve the heat conductivility between adjacent two layers graphite film；Accelerate composite construction
Overall heat transfer efficiency.
6. the composite construction of conduction graphite film provided by the invention, vertically on, the groove with its phase that is open
To surface on offer at least one blind hole；It is compressed in positioned at the graphite film this described in groove in the blind hole,
Or graphite film part corresponding with the blind hole is embedded into the blind hole.The design of blind hole so that graphite film is installed
When in groove, under extraneous extrusion process effect so that the top surface and lower surface of graphite film can with it is respective
The blind hole of corresponding groove is in close contact, or even is partially submerged into blind hole, it is ensured that and the heat of graphite film is directly passed to fixinig plate,
Accelerate heat conduction rate.
7. the preparation process of the composite construction the present invention also provides the conduction graphite film of any of the above-described, including following step
Suddenly：Graphite film is installed in the groove of one piece of fixinig plate in advance；The groove of another piece of fixinig plate is set in the top of graphite film
On portion surface, and the raised lower surface of the groove vicinity of the fixinig plate is caused to rest upon the groove week of the fixinig plate of lower section
On the raised top surface enclosed；The side wall of adjacent two pieces of fixinig plates is fixedly connected by fastener；Alternatively, in advance described
Heat-curable glue is provided with raised lower surface or top surface, treats that the lower surface is resisted against the top surface
When, adjacent two pieces of fixinig plates are fixedly connected.
Graphite film, is installed on the installation space of the groove formation of adjacent two pieces of fixinig plates by this preparation process, adjacent layer
Kept apart between graphite film by fixinig plate, the thermal conductivity factor of fixinig plate is more than the thermal conductivity factor of glue so that heat conducting film is vertical
Heat conductivility lifting on direction.Meanwhile heat conducting film is only limited in installation space, simply contacted with the internal face of groove
Or extruding relation；The protrusion of sheet metal is connected by fastener or heat-curable glue, is tieed up easy to the installation and removal of graphite film
Repair.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
Put, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the top view of sheet metal in the composite construction of conduction graphite film provided in embodiment 1；
Fig. 2 is the leftschematic diagram of sheet metal in Fig. 1；
Fig. 3 is left side structure schematic diagram (the first fixation side of the composite construction of the conduction graphite film provided in embodiment 1
Formula)；
Fig. 4 is left side structure schematic diagram (second of fixation side of the composite construction of the conduction graphite film provided in embodiment 1
Formula)；
Fig. 5 is that composite construction removes the left side structure schematic diagram after graphite film in Fig. 4；
Fig. 6 is that the structure for the sheet metal for being located at intermediate layer in the composite construction of the conduction graphite film provided in embodiment 2 is shown
It is intended to；
Fig. 7 is the structure diagram of the composite construction of the conduction graphite film provided in embodiment 2；
Fig. 8 is another structure diagram of the composite construction of the conduction graphite film provided in embodiment 2；
Description of reference numerals：
1- fixinig plates；11- grooves；111- open ports；112- blind holes；12- is raised；13- installation spaces；
2- graphite films；
3- fasteners；
4- heat-curable glues.
Embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Easy to describe the present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other into conflict.
Embodiment 1
The present embodiment provides a kind of composite construction of conduction graphite film, as shown in Figure 1 to Figure 3, including one layer of 2 He of graphite film
Two pieces of fixinig plates 1.Wherein, fixinig plate 1 is sheet metal, is, for example, copper foil, aluminium foil, silver foil, goldleaf, albronze, Kufil
Etc..The thermal conductivity factor of metal is much larger than the thermal conductivity factor of glue.
The groove 11 being recessed inwardly is offered on two pieces of one side surfaces of sheet metal, corresponding to groove 11, sheet metal is upper
Part around groove 11 forms protrusion 12.As shown in figure 5, the groove 11 of two pieces of sheet metals is oppositely arranged, two grooves 11
Between surround installation space 13；One layer of graphite film 2 is installed in the installation space 13, its top surface tight abutment is positioned at upper
On the top surface of the sheet metal groove 11 of side, its lower surface tight abutment is in the bottom of the groove 11 positioned at lower-lying metal piece
On surface.
The fixed form of two pieces of sheet metals has two kinds, as shown in figure 3, the first fixed form is：Metal above
The lower surface of the protrusion 12 of piece is overlapped on the top surface of protrusion 12 of underlying sheet metal, is vertically tightened
Firmware 3 sequentially passes through protrusion 12 above and underlying raised 12, so that two sheet metals be fixedly connected.Example
Such as, fastener 3 is screw, either bolt or screw etc..Using the detachable connection of fastener 3, easy to metal
The installation and removal of piece.
As shown in Figure 4 and Figure 5, second of fixed form is：The lower surface of the protrusion 12 of sheet metal above with
Fixed between the top surface of the protrusion 12 of underlying sheet metal by heat-curable glue 4.That is, two pieces of sheet metals are consolidated
Determining mode is realized by fixing the protrusion 12 of two sheet metals, and graphite film 2 is simply installed in installation space 13,
It is simply contacted between groove 11 or the relation of squeezed tight.
As shown in figure 5, above-mentioned installation space 13 is non-closed cavity, along 2 width of graphite film, protrusion 12
Two side walls are the open ports 111 being in communication with the outside, when graphite film 2 is installed in installation space 13, in the lateral direction,
The end face of graphite film 2 is in communication with the outside；But end face in the front-back direction keeps apart with the extraneous inner wall by protrusion 12, prevents graphite film
There is dry linting phenomenon in 2 end face in the longitudinal direction, since graphite film 2 is layer structure, in use for some time, stratiform knot
Structure can be fluffy, occurs the phenomenon for the chip that comes off on end face, but graphite it is conductive can, which drops sets in electronics
On standby conductive component, the short circuit phenomenon of electronic equipment can be caused to occur, the normal use of electronic equipment, thus this Shen can be influenced
The protrusion 12 of technical solution please plays the role of bound edge, prevents occurring the phenomenon of dry linting on the front/rear end of graphite film 2.
Of course for dry linting phenomenon occurs on the end face for preventing 2 surrounding of graphite film, do not opened up in the surrounding of protrusion 12 any
Open ports 111, the installation space 13 that the groove 11 of two pieces of sheet metals surrounds is closed housing, and the surrounding of graphite film 2 is equal at this time
Surrounded by the internal face of protrusion 12, even if dry linting phenomenon occurs in the end face of graphite film 2, the chip separated is also limited to peace
Fill in space 13, without departing from the component of electronic equipment, so as to completely avoid electronic equipment because conduction graphite film 2 is fallen
Short circuit problem caused by powder phenomenon, while graphite film film thermal conductivity is improved, does not interfere with the normal use of electronic equipment,
So as to extend the service life of electronic equipment.
As shown in Fig. 2, on vertically, being open with it on opposite surface for groove 11 offers several blind holes
112, the uniform difference of several blind holes 112 is on a surface.For sheet metal above, blind hole 112 is opened in this
On the top surface of the inside of groove 11, for underlying sheet metal, blind hole 112 is opened in inside the groove 11
In lower surface.The setting of blind hole 112, when placing graphite film 2, by pressing technology, graphite film 2 is pressed downward so that stone
2 lower surface of ink film and top surface are closely bonded with respective corresponding blind hole 112 respectively, or even on 2 surface of graphite film
Be embedded at the position opposite with blind hole 112 in blind hole 112, so that it is guaranteed that the lower surface of the surface of graphite film 2 and groove 11 or
Top surface fits closely, and prevents when graphite film 2 is installed in groove 11, corresponding recessed of the top surface of graphite film 2
There are gap between the lower surface of groove 11, and the corresponding groove 11 of lower surface of graphite film 2 top surface it
Between there are gap, the heat-conductive characteristic between graphite film 2 and sheet metal on vertical direction is influenced, so as to further improve compound
The heat conductivility of structure.
The composite construction of conduction graphite film 2 in this embodiment, using thermal conductivity factor much larger than the thermal conductivity factor of glue
Sheet metal, and groove 11 is opened up on a side surface of sheet metal, the groove 11 of two pieces of sheet metals is oppositely arranged, two grooves 11
Between formed be suitable for place graphite film 2 installation space 13, vertically on, the top surface and lower surface of graphite film 2
Pass through the company of protrusion 12 on each with the sheet metal contact each contacted or tight abutment, the fixed forms of two pieces of sheet metals respectively
Fixation is connect, and does not have direct fixed relationship between graphite film 2, simply contact relation, so that on vertically, heat conducting film
Can be more quickly by heat transfer thereon to sheet metal, sheet metal passes to external environment again, and then improves composite construction
Heat conductivility.
Embodiment 2
The present embodiment provides a kind of composite construction of conduction graphite film, and as shown in Figure 6 and Figure 7, it in embodiment 1 with providing
The composite construction of conduction graphite film compare, it is existing to differ only in：
It includes two layers of conduction graphite film 2, and three sheet metals.Wherein, in the lower surface of the sheet metal of top layer
Fluted 11 are opened up, fluted 11 are opened up on the top surface of the sheet metal of bottom, positioned at the both sides of middle sheet metal
Fluted 11 are opened up respectively.Surrounded between groove 11 at the top of the groove 11 of the sheet metal of top layer and the sheet metal of centre
First installation space 13, surrounds the between the groove 11 on the groove 11 of the sheet metal of bottom and the sheet metal bottom of centre
Two installation spaces 13.Two layers of graphite film 2 is separately mounted in the first installation space 13 and the second installation space 13.Intermediate metal film
Top surface and lower surface have protrusion 12 respectively, the protrusions 12 of the both sides protrusion 12 with the sheet metal positioned at top layer respectively
With the connection of protrusion 12 positioned at underlying metal piece.Such as connected by heat-curable glue, or all layers of protrusion, pass through connector
It is fixedly connected.Other structures are same as Example 1, do not repeat herein.
The composite construction of this embodiment, by setting three-layer metal piece, two layers of graphite film 2, forms double-layer graphite film 2
Composite construction, further improves the heat conductivility of composite construction.
Similarly, as shown in figure 8, composite construction can also include four layers of sheet metal and three layers of graphite film 2.Positioned at top layer
The lower surface of sheet metal opens up groove 11, and groove 11 is opened up on the top surface of the sheet metal of bottom, positioned at centre
A groove 11 is opened up in the both side surface of double layer of metal piece respectively.Four layers of sheet metal stack setting, directly will by fastener 3
The protrusion 12 of four layers of sheet metal is fixedly connected；Alternatively, consolidated between the protrusion 12 of the sheet metal of adjacent two layers by 4 glue of heat cure
It is fixed.The groove 11 of two neighboring sheet metal surrounds installation space 13, surrounds three installation spaces 13, three layers of graphite film from top to bottom
2 are separately mounted in an installation space 13, so as to form the composite construction of three layers of graphite film 2.
As further deformation, in composite construction the number of plies of graphite film 2 can also be four layers, five layers, six layers, seven layers,
Eight layers etc., accordingly, sheet metal is five layers, six layers, seven layers, eight layers, nine layers etc., that is, the number of plies of graphite film 2 is n-layer,
The number of plies of corresponding sheet metal be n+1 layers, vertically on, all sheet metals stack setting, positioned at the sheet metal of top
Lower surface on open up fluted 11, fluted 11 are opened up on the top surface of the sheet metal of the bottom, remaining metal
Opened up respectively in the both side surface of piece and be described groove 11；Installation space is surrounded between two grooves 11 of adjacent two pieces of sheet metals
13；
Graphite film 2 is installed in installation space 13 correspondingly, the graphite films 2 of adjacent two layers by one layer of sheet metal every
Leave.So as to form the composite construction of Multi-layer graphite film.
Embodiment 3
The present embodiment provides a kind of composite construction of conduction graphite film, the composite construction provided with embodiment 1 or embodiment 2
Compare, difference is：
Sheet metal may be replaced with other fixinig plates 1, as long as the thermal conductivity factor of fixinig plate 1 is more than the thermal conductivity factor of glue
.For example, iron plate, silicon chip etc..
Embodiment 4
A kind of composite construction of conduction graphite film provided in this embodiment, it is real with any of embodiment 1 to embodiment 3
Apply the composite construction provided in example to compare, difference is：
The quantity that blind hole 112 is opened up on groove 11 can be one, two, three, four etc., the quantity specifically set
Depending on according to the actual requirements.
As interchangeable embodiment, groove 11 with blind hole 112 can not also be opened up on its opposite surface that is open,
When forming groove 11, the size and the size of graphite film 2 that only need the mounting structure that two grooves 11 are formed match, along vertical
On direction, it is also possible that the top surface of graphite film 2 and lower surface are close with the surface of respective opposite groove 11 respectively
Contact, it is ensured that heat conductivility.
Embodiment 5
The present embodiment provides a kind of composite construction of conduction graphite film, any of it is with embodiment 1 to embodiment 4 implements
The composite construction that example provides is compared, and the difference is that only：
The fixed form of adjacent two pieces of sheet metals is except that using outside fastener 3, or heat-curable glue 4, can also use
Other modes are fixed, such as spot welding mode, or separate set-up clamps, by fixture by the protrusion 12 of all layers of sheet metal
Grip.
Embodiment 6
The present embodiment provides a kind of composite construction of conduction graphite film, any of it is with embodiment 1 to embodiment 5 implements
The composite construction that example provides is compared, and the difference is that only：
Installation space 13 is except for closed housing, or in the lateral direction, in open ports outside；Can also be only in protrusion 12
A side wall on open up the open ports being in communication with the outside.
For example, along the width (anteroposterior direction) of graphite film 2, a side wall of protrusion 12 is second to be in communication with the outside
Open ports, or the length direction (left and right directions) along graphite film 2, a side wall of protrusion 12 is the open ports being in communication with the outside
111.Entered easy to outside air in installation space 13, with graphite film 2 heat convection occurs for air, improves heat exchange efficiency.
Embodiment 7
The present embodiment provides a kind of preparation process of the composite construction of conduction graphite film, with mono-layer graphite film 2 in embodiment 1
Exemplified by the composite construction of double layer of metal piece, it includes the following steps：
S10：Graphite film 2 is installed in the groove 11 of the sheet metal top surface of first layer；
S20：The groove 11 of the sheet metal bottom of the second layer is set on the top of graphite film 2 so that second layer metal
The top surface of protrusion 12 around the lower surface of protrusion 12 around the groove 11 of piece and the groove 11 of first layer metal piece
Against face；
S30：The protrusion 12 of first layer metal piece is fixedly connected with the protrusion 12 of second layer metal piece by fastener.
Graphite film 2, need to be only installed on the groove of two sheet metals by the composite construction of the conduction graphite film 2 of this embodiment
In 11 installation grooves 11 formed, without as in the prior art to 2 whole surface viscose glue of graphite film, in the vertical direction,
So that the heat that graphite film 2 transmits is passed through sheet metal, increase heat conductivility, whole preparation method is simple.
As first interchangeable embodiment, in S10 steps, around the groove 11 of the sheet metal of first layer
Heat-curable glue is coated on raised 12 top surfaces；
In S20 steps, when the protrusion 12 of the sheet metal of the second layer lower surface and first layer sheet metal protrusion
When heat-curable glue on 12 top surface is contacted and extruded, by the protrusion 12 of second layer metal on piece and first layer metal on piece
Protrusion 12 be adhesively fixed, it is not necessary to S30 steps.
As second interchangeable embodiment, and with heat-curable glue by the protrusion 12 of first layer metal on piece and
Protrusion 12 on two layers of sheet metal is fixed, but in S20 steps, is scribbled in the lower surface of the protrusion 12 of second layer metal piece
Heat-curable glue, when the groove 11 of second layer metal piece is set on the top of graphite film 2, the protrusion 12 of second layer metal on piece
Heat-curable glue is just adhesively fixed with 12 top surface of protrusion of first layer metal on piece, S30 steps is avoided the need for, by double layer of metal
Piece is fixedly connected.
The preparation process of the composite construction of this embodiment, presses by first layer metal piece and second layer metal piece face
When, it is possible to it is adhesively fixed by heat-curable glue, further simplifies the preparation process of composite construction.
Embodiment 8
The present embodiment provides a kind of preparation process of the composite construction of conduction graphite film, with three layers of graphite film 2 in embodiment 2
Exemplified by the composite construction of four layers of sheet metal, it includes the following steps：
S10：First layer graphite film 2 is installed in the groove 11 of the sheet metal top surface of bottom；
S20：The groove 11 of the sheet metal bottom of the second layer is set on the top of first layer graphite film 2 so that second
The top of the lower surface of protrusion 12 around the groove 11 of layer sheet metal and the protrusion 12 around the groove 11 of underlying metal piece
Surface is against face；
S25：Installation second layer graphite film 2 in groove 11 on second layer metal piece top surface, then third layer is golden
The groove 11 for belonging to piece bottom is set on second layer graphite film 2 so that protrusion 12 around the groove 11 of third layer sheet metal
The top surface of protrusion 12 around the groove 11 of lower surface and second layer metal piece is against face；
Installation third layer graphite film 2 in groove 11 on the top surface of third layer sheet metal again, then by top-level metallic
The groove 11 of piece bottom is set on third layer graphite film 2 so that the bottom of the protrusion 12 around the groove 11 of top-level metallic piece
The top surface of protrusion 12 around the groove 11 of surface and third layer sheet metal against and face；
S30：By fastener by the protrusion 12 of underlying metal piece, the protrusion 12 of second layer metal piece, third layer sheet metal
Protrusion 12 and the protrusion 12 of top-level metallic piece be fixedly connected.
The preparation process of the composite construction of the conduction graphite film 2 of this embodiment, embodies the preparation of Multi-layer graphite film 2
Journey, the composite construction preparation process of its first embodiment of the essence with being provided in embodiment 7 are consistent.
, can also be replaceable using first alternative embodiments provided in embodiment 1 and second as deformation
The preparation process of the protrusion 12 of adjacent double layer of metal piece is fixed in embodiment using heat-curable glue.
That is, in the composite construction with Multi-layer graphite film 2, the first groove on the top surface of bottom fixinig plate 1
Load first layer graphite film 2 in 11, then the groove 11 of 1 bottom of second layer fixinig plate is set in the top of first layer graphite film 2
On, and so on, the fixinig plate 1 that graphite film 2 is positioned above it again is first installed on every layer of fixinig plate 1, until being installed to
Positioned at 1 position of fixinig plate of top layer, finally the protrusion 12 of all layers of fixinig plate 1 is connected using fastener again；Or pacifying
When filling every layer of fixinig plate 1, using heat-curable glue, the protrusion 12 of adjacent two layers fixinig plate 1 is directly adhesively fixed.Or using it
His fixed form, such as spot welding, when installing the fixinig plate 1 on upper strata, by 12 direct spot welding of protrusion of the fixinig plate 1 to being located at
In the protrusion 12 of lower floor's fixinig plate 1 adjacent thereto；Or after all layers of fixinig plate 1 all install, will be all using fixture
The protrusion 12 of the fixinig plate 1 of layer grips.
Obviously, the above embodiments are merely examples for clarifying the description, and the restriction not to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (10)
- A kind of 1. composite construction of conduction graphite film, it is characterised in that includingFixinig plate (1), is at least two pieces；Adjacent two pieces of fixinig plate (1) buttons set fixation, on its opposed facing side surface The groove (11) being recessed inwardly is offered respectively, and installation space (13) is surrounded between this two grooves (11)；Correspondingly, institute The part on fixinig plate (1) around the groove (11) is stated to be formed raised (12)；The thermal conductivity factor of the fixinig plate (1) is big In the thermal conductivity factor of glue；Conduction graphite film (2), at least one layer；One layer of graphite film (2) is adapted to mount in the installation space (13).
- 2. the composite construction of conduction graphite film according to claim 1, it is characterised in that the graphite film (2) is at least Two layers, the fixinig plate (1) is at least three pieces；On vertically, all fixinig plates (1) stack setting, positioned at the bottom table of the fixinig plate (1) of top The groove (11) is offered on face, the groove is offered on the top surface of the fixinig plate (1) of the bottom (11), the groove (11) is offered respectively in the both side surface of remaining fixinig plate (1)；Adjacent two pieces of fixinig plates (1) installation space (13) is surrounded between two grooves (11)；The graphite film (2) is installed in the installation space (13) correspondingly, the graphite film (2) quilt of adjacent two layers The fixinig plate (1) is kept apart.
- 3. the composite construction of conduction graphite film according to claim 1 or 2, it is characterised in thatAlong the width of the graphite film (2), at least one side wall of the protrusion (12) is that first to be in communication with the outside opens wide Mouth (111)；OrAlong the length direction of the graphite film (2), at least one side wall of the protrusion (12) is that second to be in communication with the outside opens wide Mouthful.
- 4. the composite construction of conduction graphite film according to claim 1 or 2, it is characterised in that the installation space (13) For closed housing, the surrounding of the graphite film (2) is surrounded by the internal face of raised (12).
- 5. the composite construction of the conduction graphite film according to any one of claim 1-4, it is characterised in that adjacent two pieces solid In stator (1), the protrusion (12) of the fixinig plate (1) above and the protrusion of the underlying fixinig plate (1) (12) connection is removably secured by fastener；OrIn adjacent two pieces of fixinig plates (1), the lower surface of the protrusion (12) of the fixinig plate (1) above is with being located at It is adhesively fixed between the top surface of the protrusion (12) of the fixinig plate (1) of lower section by heat-curable glue.
- 6. the composite construction of the conduction graphite film according to any one of claim 1-5, it is characterised in that the fixinig plate (1) it is sheet metal.
- 7. the composite construction of conduction graphite film according to claim 6, it is characterised in that the sheet metal is copper foil, aluminium Any one in paper tinsel, silver foil, goldleaf, albronze, Kufil.
- 8. the composite construction of the conduction graphite film according to any one of claim 1-7, it is characterised in that vertically On, being open with it on opposite surface for the groove (11) offers at least one blind hole (112)；Positioned at groove this described (11) graphite film (2) in is compressed in the blind hole (112), or the graphite film (2) and the blind hole (112) Corresponding part is embedded into the blind hole (112).
- 9. the composite construction of conduction graphite film according to claim 8, it is characterised in thatThe blind hole (112) is at least two, and all blind holes (112) are evenly distributed on the surface of the groove (11) On.
- 10. a kind of preparation process of the composite construction of the conduction graphite film any one of claim 1-9, its feature exist In including the following steps：Graphite film (2) is installed in the groove (11) of one piece of fixinig plate (1) in advance；The groove (11) of another piece of fixinig plate (1) is set on the top of graphite film (2), and causes the recessed of the fixinig plate (1) The lower surface of protrusion (12) around groove (11) rests upon the protrusion around the groove (11) of the fixinig plate (1) of lower section (12) on top surface；The protrusion (12) of adjacent two pieces of fixinig plates (1) is fixedly connected by fastener；Alternatively, in advance in the lower surface or Heat-curable glue is provided with person's top surface, when the lower surface is resisted against the top surface, by described in adjacent two pieces The protrusion (12) of fixinig plate (1) is fixedly connected.
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| CN201710869318.7A CN107953616A (en) | 2017-09-23 | 2017-09-23 | The composite construction and its preparation process of a kind of conduction graphite film |
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| CN201710869318.7A CN107953616A (en) | 2017-09-23 | 2017-09-23 | The composite construction and its preparation process of a kind of conduction graphite film |
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|---|---|---|---|---|
| JP2008288337A (en) * | 2007-05-16 | 2008-11-27 | Toshiba Corp | Heat conductor |
| CN203185771U (en) * | 2013-04-24 | 2013-09-11 | 常州碳元科技发展有限公司 | Edge covering type high-heat-conductivity graphite diaphragm |
| CN104754913A (en) * | 2013-12-27 | 2015-07-01 | 华为技术有限公司 | Heat-conductive composite material sheet and preparation method thereof |
| CN105338794A (en) * | 2015-11-18 | 2016-02-17 | 成都雷电微力科技有限公司 | Phased array radar T/R module and heat dissipation assembly thereof |
| CN207224720U (en) * | 2017-09-23 | 2018-04-13 | 世星科技股份有限公司 | A kind of composite construction of conduction graphite film |
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2017
- 2017-09-23 CN CN201710869318.7A patent/CN107953616A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008288337A (en) * | 2007-05-16 | 2008-11-27 | Toshiba Corp | Heat conductor |
| CN203185771U (en) * | 2013-04-24 | 2013-09-11 | 常州碳元科技发展有限公司 | Edge covering type high-heat-conductivity graphite diaphragm |
| CN104754913A (en) * | 2013-12-27 | 2015-07-01 | 华为技术有限公司 | Heat-conductive composite material sheet and preparation method thereof |
| CN105338794A (en) * | 2015-11-18 | 2016-02-17 | 成都雷电微力科技有限公司 | Phased array radar T/R module and heat dissipation assembly thereof |
| CN207224720U (en) * | 2017-09-23 | 2018-04-13 | 世星科技股份有限公司 | A kind of composite construction of conduction graphite film |
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