CN203697591U - High-heat-conductivity graphite composite block - Google Patents
High-heat-conductivity graphite composite block Download PDFInfo
- Publication number
- CN203697591U CN203697591U CN201320786853.3U CN201320786853U CN203697591U CN 203697591 U CN203697591 U CN 203697591U CN 201320786853 U CN201320786853 U CN 201320786853U CN 203697591 U CN203697591 U CN 203697591U
- Authority
- CN
- China
- Prior art keywords
- composite block
- graphite
- graphite composite
- high conductive
- heat
- 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.)
- Expired - Lifetime
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 105
- 239000010439 graphite Substances 0.000 title claims abstract description 103
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 103
- 239000002131 composite material Substances 0.000 title claims abstract description 51
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 10
- 229920002521 macromolecule Polymers 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 6
- 239000012528 membrane Substances 0.000 abstract 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 3
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 4
- 238000007731 hot pressing Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The utility model discloses a high-heat-conductivity graphite composite block. The benzene evaporation tank comprises a plurality of graphite heat conduction membranes and a plurality of bonding layers; an edge at one end of each graphite heat conduction membrane is bended; the plurality of graphite heat conduction membranes are laminated and pressed together by the bonding layers. Because the plurality of graphite heat conduction membranes are laminated and pressed together by the bonding layers, the thickness of the high-heat-conductivity graphite composite block can be set as required, so that the high-heat-conductivity graphite composite block has certain rigidity; the flexible graphite heat conduction membrane is fixed effectively, and the higher heat conduction coefficient cannot be affected. When in use, the buckled end surface of the graphite heat conduction membrane is fit with a device heat source which needs to be dissipated, so that the effective heat radiation at the thickness direction can be realized, the heat management in the running of electronic devices is realized, and the application field of the graphite membrane is also expanded.
Description
Technical field
The utility model relates to heat-conducting piece field, relates in particular to a kind of high conductive graphite composite block.
Background technology
In display and lighting field, in order to save the energy, LED has replaced conventional display lighting device gradually.Aspect liquid crystal display, in order to reduce costs, the LED that uses lesser amt relatively high power is the target that manufacturer is pursued; And aspect illumination, particularly public arena, the illumination of industrial and mineral factory building, using more high-power LED is indispensable condition.But increasing power also causes the caloric value of LED to increase, and its life-span is had significantly and affected, and existing passive heat dissipating method can not effectively solve the heat dissipation problem of LED.
Consumer electronics develops rapidly in recent years, and particularly smart mobile phone has reached 700,000,000 the shipment amounts of 2012.In order to cater to consumer to the integrated requirement of function, manufacturer brings into use the battery of more powerful chip and larger reserves on mobile phone, but has also brought very high caloric value and the temperature of Geng Gao simultaneously.Operation stability, the speed of service, battery capacity and the equipment life of equipment are consequently affected.
Metal has good heat conductivility, and therefore it has obtained being widely used aspect heat radiation, as silver, copper, gold, aluminium etc.Wherein the thermal conductivity of silver is the highest, but copper and aluminium is because price advantage, apply the most general, as the copper radiating tube in notebook computer, the aluminum heat sink on LCD display.But along with miniaturization day by day and the increased power of electronic equipment, existing heat dissipation metal device has been difficult to meet heat radiation requirement.And the appearance of high conductive graphite film has made up the blank of this respect.This high thermal conductivity materials is the film material of graphite material, and its plane thermal conductivity can reach 2000W/mK.Graphite guide hotting mask can be attached to thermal source surface, thereby heat is spread rapidly, reaches the effect of quick heat radiating by increasing heat radiation area.But the high heat conductance of graphite guide hotting mask is only in parallel direction, though flexible rigidity deficiency.
Therefore, how providing a kind of high conductive graphite composite block that can realize quick conductive at thickness direction with certain rigidity is this area technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of high conductive graphite composite block, has certain rigidity, can realize flash heat transfer heat conduction at thickness direction, thereby, realize the operating thermal management of electronic device, and expanded the application of graphite film.
To achieve the above object, the utility model adopts following technical scheme:
A kind of high conductive graphite composite block, comprises some graphite guide hotting masks and some tack coats, an end margin bending of every graphite guide hotting mask, and described some graphite guide hotting masks are folded compressed together by described tack coat, and described tack coat is macromolecule resin rete.
Preferably, in above-mentioned high conductive graphite composite block, the thickness of described graphite guide hotting mask is 20-70 μ m.
Preferably, in above-mentioned high conductive graphite composite block, the density of described graphite guide hotting mask is 2.1 g/cm
3.
Preferably, in above-mentioned high conductive graphite composite block, the thermal conductivity of described graphite guide hotting mask on in-plane is between 800-2000 W/mK.
Preferably, in above-mentioned high conductive graphite composite block, the thickness of described high conductive graphite composite block is at 2.25-10.50 mm.
Preferably, in above-mentioned high conductive graphite composite block, the thermal conductivity of described high conductive graphite composite block on in-plane is between 300-800 W/mK.
Preferably, in above-mentioned high conductive graphite composite block, described macromolecule resin rete is any one or the combination in phenolic resins, polyolefin, ethylene-acetate ethyl ester, poly-carbon resin, polyurethane, silica gel or epoxy resin.
The high conductive graphite composite block that the utility model provides, comprise some graphite guide hotting masks and some tack coats, one end margin bending of every graphite guide hotting mask, described some graphite guide hotting masks are folded compressed together by described tack coat, because described some graphite guide hotting masks are folded compressed together by described tack coat, the thickness of high conductive graphite composite block can be arranged as required, make it have certain rigidity, so can make soft graphite heat conducting film both effectively be fixed, can guarantee that again its higher thermal conductivity factor is unaffected, in use, to need the end face after the bending of graphite guide hotting mask to fit with the device thermal source that needs heat radiation, can realize the efficiently radiates heat on thickness direction, thereby can realize the operating thermal management of electronic device, also expanded the application of graphite film.
Brief description of the drawings
High conductive graphite composite block of the present utility model is provided by following embodiment and accompanying drawing.
Fig. 1 is the structural representation of the high conductive graphite composite block of the utility model one embodiment;
The structural representation of high conductive graphite composite block in mould when Fig. 2 is hot pressing stage of the utility model one embodiment.
In figure, the high conductive graphite composite block of 1-, 11-graphite guide hotting mask, 12-tack coat, 111-bending part, 2-mould, 3-base, 4-extrusion head, 5-cushion block.
Detailed description of the invention
Below will be described in further detail high conductive graphite composite block of the present utility model.
Below with reference to accompanying drawings the utility model is described in more detail, has wherein represented preferred embodiment of the present utility model, should be appreciated that those skilled in the art can revise the utility model described here and still realize the beneficial effects of the utility model.Therefore, following description is appreciated that extensively knowing for those skilled in the art, and not as to restriction of the present utility model.
For clear, whole features of practical embodiments are not described.They in the following description, are not described in detail known function and structure, because can make the utility model chaotic due to unnecessary details.Will be understood that in the exploitation of any practical embodiments, must make a large amount of implementation details to realize developer's specific objective, for example, according to about system or about the restriction of business, change into another embodiment by an embodiment.In addition, will be understood that this development may be complicated and time-consuming, but be only routine work to those skilled in the art.
For the purpose of this utility model, feature are become apparent, below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is further described.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the object of aid illustration the utility model embodiment lucidly.
Referring to Fig. 1, is the structural representation of the high conductive graphite composite block 1 of the utility model one embodiment shown in Fig. 1.This high conductive graphite composite block 1, comprise some graphite guide hotting masks 11 and some tack coats, one end margin bending of every graphite guide hotting mask 11, as bending part 111, described some graphite guide hotting masks 11 are folded compressed together by described tack coat 12, that is to say, described tack coat 12 is set between adjacent graphite guide hotting mask 11.Described some graphite guide hotting masks 11 are folded compressed together by described tack coat 12, the thickness of high conductive graphite composite block 1 can be arranged as required, make it have certain rigidity, can realize flash heat transfer heat conduction at thickness direction, thereby, realize the operating thermal management of electronic device, and expanded the application of graphite film.
Preferably, in above-mentioned high conductive graphite composite block 1, described tack coat 12 is macromolecule resin retes.Described macromolecule resin rete is the one in phenolic resins, polyolefin, ethylene-acetate ethyl ester, poly-carbon resin, polyurethane, silica gel or epoxy resin.Described macromolecule resin rete can be also the combination of above-mentioned substance.Described macromolecule resin rete can melt or polymerization at not higher than the temperature of 280 DEG C, thereby adjacent two layers graphite guide hotting mask 11 is bondd together.This high conductive graphite composite block 1, its thermal conductivity factor is by formula λ=ρ * C
p* α calculates and obtains, and in formula, λ is the thermal conductivity factor of high conductive graphite composite block 1, and ρ is the density of high conductive graphite composite block 1, C
pfor the specific heat capacity of high conductive graphite composite block 1, α is the thermal diffusion coefficient of high conductive graphite composite block 1.Can be by adopting laser conductometer test specific heat capacity and thermal diffusion coefficient, test sample is of a size of Φ 10 mm*3 mm.
Preferably, the thickness of described graphite guide hotting mask 11 is 20-70 μ m.In the present embodiment, the thickness of described graphite guide hotting mask 11 is 40 μ m.The density of described graphite guide hotting mask 11 is 2.1 g/cm
3.The thermal conductivity of described graphite guide hotting mask 11 on in-plane is between 800-2000 W/mK.
Preferably, the thickness of described high conductive graphite composite block 1 is at 2.25-10.50 mm.The thermal conductivity of described high conductive graphite composite block 1 on in-plane is between 300-800 W/mK.
The preparation method of the high conductive graphite composite block 1 that the utility model provides is as follows:
First, graphite guide hotting mask 11 is done to surface treatment, make for example macromolecule resin rete of its surface coverage last layer tack coat 12.
Then,, by the stacked formation lamination that arranges after an end margin bending of graphite guide hotting mask 11, be placed in and in mould, use Static compaction.The structural representation of high conductive graphite composite block 1 in mould when Fig. 2 is hot pressing stage of the utility model one embodiment.As shown in Figure 2, described mould 2 is arranged on a base 3, and the head of extrusion head 4 stretches in mould 2, between mould 2 and the end of extrusion head 4, is lined with cushion block 5, is formed for suppressing the chamber of high conductive graphite composite block 1 between mould 2, base 3 and extrusion head 4.At static(al) pressing stage, by regulating the height h of cushion block 5
1, can control the compression ratio of high conductive graphite composite block 1, thereby obtain differing heights h
2high heat conduction block product.
Then, under uniform temperature, pressure, carry out hot-pressing processing, make macromolecule resin melt and combine closely with graphite guide hotting mask 11.Wherein, described hot pressing temperature is 220-280
oc, pressure is 20-26 MPa.
Finally, lamination is cooling, obtain high conductive graphite composite block 1.
In sum, the high conductive graphite composite block that the utility model provides, comprise some graphite guide hotting masks and some tack coats, one end margin bending of every graphite guide hotting mask, described some graphite guide hotting masks are folded compressed together by described tack coat, because described some graphite guide hotting masks are folded compressed together by described tack coat, the thickness of high conductive graphite composite block can be arranged as required, make it have certain rigidity, so can make soft graphite heat conducting film both effectively be fixed, can guarantee that again its higher thermal conductivity factor is unaffected, in use, to need the end face after the bending of graphite guide hotting mask to fit with the device thermal source that needs heat radiation, can realize the efficiently radiates heat on thickness direction, thereby can realize the operating thermal management of electronic device, also expanded the application of graphite film.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if these amendments of the present utility model and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (7)
1. one kind high conductive graphite composite block, it is characterized in that, comprise some graphite guide hotting masks and some tack coats, an end margin bending of every graphite guide hotting mask, described some graphite guide hotting masks are folded compressed together by described tack coat, and described tack coat is macromolecule resin rete.
2. high conductive graphite composite block according to claim 1, is characterized in that, the thickness of described graphite guide hotting mask is 20-70 μ m.
3. high conductive graphite composite block according to claim 2, is characterized in that, the density of described graphite guide hotting mask is 2.1 g/cm
3.
4. high conductive graphite composite block according to claim 3, is characterized in that, the thermal conductivity of described graphite guide hotting mask on in-plane is between 800-2000 W/mK.
5. high conductive graphite composite block according to claim 1, is characterized in that, the thickness of described high conductive graphite composite block is between 2.25-10.50 mm.
6. high conductive graphite composite block according to claim 5, is characterized in that, the thermal conductivity of described high conductive graphite composite block on in-plane is between 300-800 W/mK.
7. high conductive graphite composite block according to claim 1, is characterized in that, described macromolecule resin rete is any one or the combination in phenolic resins, polyolefin, ethylene-acetate ethyl ester, poly-carbon resin, polyurethane, silica gel or epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320786853.3U CN203697591U (en) | 2013-12-04 | 2013-12-04 | High-heat-conductivity graphite composite block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320786853.3U CN203697591U (en) | 2013-12-04 | 2013-12-04 | High-heat-conductivity graphite composite block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203697591U true CN203697591U (en) | 2014-07-09 |
Family
ID=51048084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320786853.3U Expired - Lifetime CN203697591U (en) | 2013-12-04 | 2013-12-04 | High-heat-conductivity graphite composite block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203697591U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104861938A (en) * | 2015-03-27 | 2015-08-26 | 汇泰科（天津）科技有限公司 | Preparation method for composite graphite heat-conducting film |
| CN106535554A (en) * | 2015-09-09 | 2017-03-22 | 宏达国际电子股份有限公司 | Graphite thermal conductor, electronic device, and graphite thermal conductor production method |
| US10234915B2 (en) | 2015-09-09 | 2019-03-19 | Htc Corporation | Graphite thermal conductor, electronic device and method for manufacturing graphite thermal conductor |
-
2013
- 2013-12-04 CN CN201320786853.3U patent/CN203697591U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104861938A (en) * | 2015-03-27 | 2015-08-26 | 汇泰科（天津）科技有限公司 | Preparation method for composite graphite heat-conducting film |
| CN106535554A (en) * | 2015-09-09 | 2017-03-22 | 宏达国际电子股份有限公司 | Graphite thermal conductor, electronic device, and graphite thermal conductor production method |
| US10234915B2 (en) | 2015-09-09 | 2019-03-19 | Htc Corporation | Graphite thermal conductor, electronic device and method for manufacturing graphite thermal conductor |
| CN106535554B (en) * | 2015-09-09 | 2019-03-22 | 宏达国际电子股份有限公司 | Graphite heat conductor, electronic device and graphite thermal conductor manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |
|
| CX01 | Expiry of patent term |