CN1792124A - Bulk high thermal conductivity feedstock and method of making thereof - Google Patents
Bulk high thermal conductivity feedstock and method of making thereof Download PDFInfo
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- CN1792124A CN1792124A CN 200480013321 CN200480013321A CN1792124A CN 1792124 A CN1792124 A CN 1792124A CN 200480013321 CN200480013321 CN 200480013321 CN 200480013321 A CN200480013321 A CN 200480013321A CN 1792124 A CN1792124 A CN 1792124A
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- 238000004519 manufacturing process Methods 0.000 title description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 91
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 85
- 239000010439 graphite Substances 0.000 claims abstract description 85
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000007731 hot pressing Methods 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims description 29
- 238000000137 annealing Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000007770 graphite material Substances 0.000 claims description 10
- 238000001192 hot extrusion Methods 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 238000005087 graphitization Methods 0.000 claims description 3
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- 229910052799 carbon Inorganic materials 0.000 abstract description 8
- 229920000642 polymer Polymers 0.000 abstract description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 8
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- 239000003795 chemical substances by application Substances 0.000 description 4
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- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
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- NLDYACGHTUPAQU-UHFFFAOYSA-N tetracyanoethylene Chemical compound N#CC(C#N)=C(C#N)C#N NLDYACGHTUPAQU-UHFFFAOYSA-N 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 229920001646 UPILEX Polymers 0.000 description 1
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- 238000005275 alloying Methods 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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- 229910052786 argon Inorganic materials 0.000 description 1
- JFDZBHWFFUWGJE-UHFFFAOYSA-N benzonitrile Chemical compound N#CC1=CC=CC=C1 JFDZBHWFFUWGJE-UHFFFAOYSA-N 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
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- 229910003460 diamond Inorganic materials 0.000 description 1
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- -1 dimethylene benzoquinones Chemical class 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
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- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000000138 intercalating agent Substances 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
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- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 229910052704 radon Inorganic materials 0.000 description 1
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 description 1
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- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- Carbon And Carbon Compounds (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention relates to a feedstock material for use in making heat spreaders, comprising a sheet of annealed pyrolytic graphite having a thermal conductivity of greater than 1000 watts/m-K, a thickness of at least 0.2 mm, and a size in any other dimension of at least 5 cm. In one embodiment, the feedstock is made by hot-pressing a stack of alternate layers of pyrolytic graphite sheets with flat graphite dies for a finished sheet of annealed pyrolytic graphite comprising a plurality of layers being parallel to each other of at least 0.075 degrees per mm of thickness. In another embodiment, the finished sheet of annealed pyrolytic graphite is made by graphitizing a stack of films comprising a high-carbon polymer.
Description
The cross reference of related application
Present patent application requires the priority of the U.S. Provisional Application patent 60/504537 of application on September 19th, 2003.
Invention field
The present invention relates to the heat of heat treatment pyrolytic graphite and the large volume sheet (bulksheet) of electrical conductivity compound, in one application as radiator (heat spreader), for example heat is spread from thermal source, the invention still further relates to the formation method of the large volume sheet of heat treatment pyrolytic graphite.
Background of invention
Electronics and/or integrated circuit (" IC ") instrument, for example microprocessor, memory etc. all become more and more littler, and be meanwhile but more and more higher to the requirement of heat radiation.For the heat that these instruments are produced dissipates, radiator and/or fin have been used.
Disclose different materials and design, be used to manage and remove heat from electronic instrument.U.S. Patent number 5,296,310 disclosed a kind of between a pair of dough sheet (face sheet) that comprises metal or matrix-enhancing metal, clip material of high thermal conductivity mix (hybrid) constructional device.Core material can be highly regular pyrolytic graphite, compression annealing pyrolytic graphite (CAPG), synthesizing diamond, the compound that uses these materials or materials similar.United States Patent (USP) 6,215,661 have been disclosed the radiator that comprises L shaped heat treatment pyrolytic graphite (the thermal pyrolytic graphite) sheet that is encapsulated in the aluminium.United States Patent (USP) 5,958,572 have proposed a kind of heat radiating material, and it comprises the plug-in part (insert) of heat treatment pyrolytic graphite (TPG), diamond-like carbon and similar material with a plurality of passages that are formed on wherein, so that by a plurality of channel transfer hot-fluid optimizations.
The pyrolytic graphite of forms more of the prior art, particularly those pyrolytic graphites that make by the chemical vapor deposition (CVD) process (TPG) are because crystal face thickness difference has problem in uneven thickness.Adjacent crystal layer is parallel basically, but is changing in the crystal scale accumulation (crystallographic scale accumulate) on the macroscopic thickness.For example, on 1 mm-scale, natural aspect air spots is capable.Have required thermal conductance the heat treatment pyrolytic graphite " watt " (thermalpyrolytic graphite " tile ") be used to prepare radiator in the prior art.But they have only relatively little size usually, and are wide as 2cm, 0.1cm is thick, can only be used for making relatively little radiator.United States Patent (USP) 6,407,902 provide solution about the radiator with small size pyrolytic graphite watt, and it comprises heat treatment pyrolytic graphite thin slice (theremal pyrolytic graphite flake) is incorporated in the host material.The composite graphite material can be processed into the radiator that needs size, does not re-use a plurality of fixing undersized graphite tile of the prior art.
Exist a kind of like this needs, the high thermal conductivity material that requirement provides quality and size to be improved, with the device that is used for electronics and IC instrument are dispelled the heat, promptly require to provide the material of the raw material (feedstock material) that are suitable for use as preparation radiator, fin etc.Equally also need to make the raw-material method of this high heat conductance.
Summary of the invention
In one aspect of the invention, the raw material that are used to make radiator have been disclosed, this raw material comprise that pyroconductivity is greater than 5cm, the thickness annealing pyrolytic graphite of 0.2mm (the annealed pyrolytic graphite) sheet at least at least of the size on 1000W/m-K, any dimension (dimension), comprising a plurality of graphite planes, each flatness that has (flatness) is less than every millimeter thickness of about 0.075 degree.
The present invention also further relates to the preparing raw material method, these raw material comprise that pyroconductivity is greater than 5cm, the thickness annealing pyrolytic graphite thin slice of 0.2mm at least at least of the size on 1000W/m-K, any dimension, comprising a plurality of graphite planes, each flatness that has is less than every millimeter thickness of about 0.075 degree.
The accompanying drawing summary
Fig. 1 is the perspective view of annealing pyrolytic graphite sheet, thickness T wherein, length of side L, deviation angle P.
Detailed Description Of The Invention
The applicant has developed a kind of raw material of novel preparation heat management/heat sink applications. In this article, radiator can with the Alternates such as fin, heat pipe, refer to the heat management device or the heat transfer apparatus that comprise for the material of high thermal conductivity of the heat radiation of IC circuit, electronic instrument etc. or heat extraction.
As known in the art, along with the increase of raw material thickness, the collimation of the TPG layer of large-scale production is destroyed. The thickness of TPG can be expressed as in distance L during greater than 25mm, and the deviation angle P of every thickness T is defined as follows and is also shown among Fig. 1:
Know also in this area that the feature of graphite is the layer structure of carbon atom, have two main shafts, one is " c " axle, it is generally acknowledged the axle or the direction that are perpendicular to carbon-coating; An axle in addition is " a " axle, is parallel to the direction of graphite linings, transverse to the c axle.
In one embodiment of the invention, novel raw material comprise that pyroconductivity is that 1000W/m-K, the size on any dimension are that 5cm (being length and width, girth etc.), thickness are the annealing pyrolytic graphite sheet of 0.2mm at least at least at least, and graphite plane or layer are parallel to each other and have and be expressed as the flatness of deviation angle P less than 0.075 every millimeter thickness of degree (on the c direction).In second embodiment of the present invention, deviation angle P is less than every millimeter thickness of 0.07 degree.In the 3rd embodiment, deviation angle P is less than every millimeter thickness of 0.05 degree.
The manufacturing of the raw material annealing pyrolyzing graphite material that conforms to quality requirementsPyrolytic graphite normally is prepared as follows: the gas (carbonaceous) with carbon containing under the low pressure passes through maintenance base material at high temperature, this moment occurs pyrolysis, and the pyrolytic graphite vapour deposition is on exposed wicking surface.
In one embodiment of the present invention, utilize the chemical vapor deposition (CVD) method, hydrocarbon gas such as methane, natural gas, acetylene etc. are led in about 1300-2500 ℃, the heating furnace of about 0.5-500 mmhg pressure.Hydrocarbon gas can have be fit to form as the surface of the base material of graphite (natural or synthetic) on carry out thermal decomposition, use flat base material, formation sheet or tabular pyrolytic graphite.
In the embodiment of a CVD method, with a spot of volatile alloying metal source (as BCl
3, HfCl
4, BF
3Or the halide of other refractory metal) and hydrocarbon gas lead to together in the hot stove and go, can reduce stress level, be increased in the thickness of the TPG layer that deposits on the base material.In another embodiment, to reactant, thermal decomposition product and substrate all the diluent gas of inertia be added in the hydrocarbon feed source.Diluent gas is helium, neon, argon, krypton, xenon, radon, hydrogen, nitrogen etc. normally.The adding of diluent gas helps the speed of control carbon laydown, thus the gained thickness of control pyrolytic graphite sheet or plate.
After pyrolytic graphite sheet and base substrate peeled off, it is carried out thermal anneal process.But in the process of cool to room temperature, the thermal stress of introducing in the material makes that (bow, wrinkle) situation arrive the every 100mm leaf length of 1mm greatly to pyrolytic graphite sheet generation gauffer.
In annealing steps, pyrolytic graphite continues heating about 10-30 minute in the temperature more than 2900 ℃, and the time is formed highly oriented pyrolytic graphite (HOPG) thus or is sometimes referred to as heat treatment pyrolytic graphite (TPG) by the thickness and the volume decision of the product of annealing.In the method, crystalline form taking place change, make the orientation of layer plane make moderate progress, reduced the thickness (reducing) perpendicular to layer plane on the c direction, is increasing (increasing on a direction) on length and the Width.It is the final products of outstanding pyroconductivity of 1000W/m-K at least that the increase of improved orientation and crystal size has obtained.
The applicant finds in annealing process these layers are carried out " healing " that hot extrusion (hot-pressing) can be surprising or handled the gauffer situation, make it possible to prepare TPG raw material like this with required quality, for example large-sized TPG sheet with abundant pyroconductivity and graphite linings collimation can be applied in the heat management field.Hot extrusion process can be used method and apparatus as known in the art, for example uses mould (die), roll shaft preparations such as (roller).
In one embodiment of the invention, pyrolytic graphite is heat-treated in above-mentioned temperature range, and is carrying out hot extrusion on the mould to remove the enclosed mass or the gauffer of the injustice that produces on carbonaceous sheet or base material in chemical vapour deposition (CVD).Mould can be isotropic graphite cake, and size for example covers the surface area of at least 75% graphite flake corresponding to the full-scale or portion size of graphite flake.In a kind of specific embodiments of this treatment step, pyrolytic graphite sheet or sheet material (board) and alternately stack of flat graphite cake (plate), the weight of uppermost graphite briquetting (block) is added to weight on each graphite sheet equably.
In another embodiment of the invention, the carbon raw material uses with the form (rather than hydrocarbon gas) of high carbon polymer, is used for producing pyrolytic graphite sheet or sheet material.In an example of this process, the sheet of high carbon polymer (or film) is stacked together, and carries out hot pressing from the direction vertical with sheet under enough temperature, keeps one sufficiently long period, makes the polymeric material charing form graphite.In an example, one folded in one direction at least long, the thickness of 5mm be heated to about 2820-3000 ℃ less than 50 microns polyimide film (example comprise the Kapton of E.I.duPont de Nemours company and the Upilex of Uniglobe-Kisco company) and be used to carry out complete graphitization, form annealing pyrolytic graphite sheet, graphite plane is parallel to each other, and flatness that promptly has or deviation angle are less than or equal to every millimeter thickness of about 0.075 degree.
In one embodiment of the invention and as European Patent Application No. is EP 432,944 A1 are told about, graphited pyrolytic graphite that makes or TPG handle with inserting agent (intercalating agent) subsequently, make graphited pyrolytic graphite peeling off or separating to become on the c axle be more prone to.After the insertion, promptly with inserting after agent handles, this treated pyrolytic graphite can be rinsed or purify removes excessive insertion agent.
The example that inserts agent comprises organic or inorganic acid, as nitric acid, sulfuric acid, perhalogeno acid (perhalo acid) and their mixture; 7,7,8, the 8-four cyano to the dimethylene benzoquinones (tetracyanoquinomethane, TCNQ), TCNE (TCNE), 1,2,4,5-four cyano benzene (TCBN) etc.; Bromine and (three) iron chloride; The chlorate of nitric acid and potash.
The raw-material application of TPG of the present inventionIn an example of the present invention, finished product product by hot pressing/annealing in process is the TPG raw material (bulk TPG stock) of large volume, its pyroconductivity is 1000W/m-K at least, yardstick (not being thickness) on dimension is 5cm at least, the sheet that for example 5cm is wide, 10cm is long, 0.8cm is thick, comprise multilayer (being similar to shale and mica) graphite, seldom or do not have a fold (layer surperficial inhomogeneous), be parallel to each other between each layer, be defined as the flatness or the deviation angle that have and spend every millimeter thickness less than about 0.075.
In the above-mentioned example, the graphite linings of large volume TPG raw material can resolve into the layer with desired thickness subsequently, and thick 8 layers of 0.1cm for example are processed into independent watt, are used for Application Of Radiator.In an operation, the large volume TPG raw material of 5cm * 10cm of the present invention * 0.8cm can be processed into 64 square tiles that 2.4cm * 0.1cm is thick.
In example as a comparison, the raw material TPG sheet of prior art is used to make TPG watt of same size.The raw material of large volume is typical business-like, and the curvature of 0.1mm is arranged on 0.8cm is thick in the layer plane.This sheet is also peeled off as above-mentioned example, the thick tile of finished product of preparation 0.1cm.But, in order to obtain flat watt, the every side of the small pieces that each sheet is peeled off must have the excessive material of 0.1mm, to be used for processing, be that each stripping film must be that 1.2mm is thick, therefore have only the 6 thick planes of 0.1cm that connect layer can pass through the TPG feedstock production of prior art.This method minimum has 25% waste of material (6 parts with respect to using 8 parts of TPG raw material of the present invention), but also is lost in the course of processing to obtaining the needed time of the thick plain tile of 0.1mm.
Embodiment
Following embodiment is used for demonstrating the present invention, but is not limited to scope of the present invention.
In an embodiment, the TPG sheet makes by the CVD method, carry out thermal annealing in about 2900 ℃ of-3200 ℃ of temperature, arrived in lasting about 10 minutes up to 2 hours, wherein this sheet carries out hot pressing with isotropic graphite plate (isotropic graphite plates), simultaneously to the TPG sheet thermal annealing of the large volume of resulting the following example.
Embodiment 1.In this embodiment, the deviation of thickness and thickness with the interval of every approximately 76mm along the TPG sheet along the 356mm linear measure longimetry.Deviation angle is by formula calculated.Find the P value less than every millimeter thickness of 0.075 degree, the result is as follows:
| Apart from mm | L | 25.4 | 101.6 | 177.8 | 254 | 356 |
| Thickness difference mm | dT | 0.05 | 0.127 | 0.228 | 0.279 | 0.355 |
| Thickness mm | T | 15.21 | 15.26 | 15.26 | 15.29 | 15.39 |
| Degree/mm thickness | P | 0.007 | 0.005 | 0.005 | 0.004 | 0.004 |
Embodiment 2.In second embodiment, thickness and thickness deviation are measured once every 76mm on the long TPG sheet of 380mm.Deviation angle is calculated by formula.Find that the P value is also less than every millimeter thickness of 0.075 degree.
| Apart from mm | L | 25.4 | 101.6 | 177.6 | 254 | 356 |
| Thickness difference mm | dT | 0.152 | 0.127 | 0.279 | 0.533 | 1.066 |
| Thickness mm | T | 10.71 | 10.74 | 10.76 | 10.81 | 11.02 |
| Degree/mm thickness | P | 0.032 | 0.007 | 0.008 | 0.011 | 0.016 |
Embodiment 3.The skew of thickness and thickness is measured once every 76mm on the long TPG sheet of 260mm in the present embodiment.Deviation angle is calculated by formula.Find that the P value is equally also less than every millimeter thickness of 0.075 degree.
| Apart from mm | L | 25.4 | 101.6 | 177.6 | 254 |
| Thickness difference mm | dT | 0.177 | 0.12 | 0.076 | 0.279 |
| Thickness mm | T | 13.46 | 13.58 | 13.66 | 13.7 |
| Degree/mm thickness | P | 0.007 | 0.003 | 0.001 | 0.005 |
Though the invention describes preferred implementation, those of ordinary skills can various corrections can occur on the basis that does not break away from the scope of the invention, and parts are wherein worked as the thing replacement with waiting.Do not plan to limit the invention to the enforcement preferred plan of the present invention that disclosed, all specific implementations in the claim scope all are contained among the present invention.
All references quoting in the present invention all known and is incorporated into herein as a reference.
Claims (16)
1, annealing pyrolytic graphite raw material comprise annealing pyrolytic graphite sheet material, and the pyroconductivity that described graphite sheet has is greater than 1000W/m-K, and thickness is at least 0.2mm and at least one other dimension is at least 5cm,
Wherein said sheet material comprises the flat graphite flake of a plurality of that be parallel to each other and flatnesses less than every millimeter thickness of 0.075 degree.
2, the raw material of claim 1 annealing pyrolyzing graphite material, length that has and width are 5cm separately at least.
3, each raw material annealing pyrolyzing graphite material among the claim 1-2, the thickness that has is 0.5mm at least.
4, each raw material annealing pyrolyzing graphite material among the claim 1-3 is the form of the graphitization sheet material of polyimides.
5, each raw material annealing pyrolyzing graphite material among the claim 1-4, the graphitization sheet material of wherein said polyimides are included at least about graphited under 2800 ℃ the temperature, the thickness a plurality of polyimide films less than 50 microns.
6, each raw material annealing pyrolyzing graphite material among the claim 1-5 is the form of the hot extrusion sheet material of pyrolytic graphite.
7, each raw material annealing pyrolyzing graphite material among the claim 1-6, time wherein by the plate and the pyrolytic graphite sheet of a lamination heated the sufficient time section under enough temperature and pressures, described pyrolytic graphite plate is carried out hot pressing, so that described pyrolytic graphite is changed into highly oriented pyrolytic graphite.
8, each raw material annealing pyrolyzing graphite material among the claim 1-7, wherein said pyrolytic graphite sheet material is by a plurality of graphite cake hot pressing.
9, make the method for raw material annealing pyrolyzing graphite material, this method comprises the following steps:
With one or multi-disc at least the dimension except that thickness be the pyrolytic graphite heating of 5cm at least,
With described one or the multi-disc lip-deep pyrolytic graphite that is stacked to one or more plate at least 2900 ℃ temperature heating and extrusion;
Thereby form one or multi-disc annealing pyrolytic graphite, comprise that a plurality of that be parallel to each other, pyroconductivities are greater than 1000W/m-K, the thickness graphite plane of 5cm at least of the size on 0.2mm, any other dimension at least in every millimeter thickness of at least 0.075 degree.
10, according to the method for claim 9, wherein said one or more plates comprise graphite.
11, according to each method among the claim 9-10, wherein said one or more plates are moulds.
12, according to each method among the claim 9-11, wherein one or the multi-disc pyrolytic graphite be stacked on the surface of one or more plate.
13, form the method for the heat treatment pyrolytic graphite watt be used for making the heat management instrument, described method comprises:
The sheet material of annealing pyrolytic graphite is peeled off into the pyrolytic graphite of stratification, and the pyroconductivity of described sheet material is that size on 0.2mm, any other dimension is 5cm at least greater than 1000W/m-K, thickness at least;
Described pyrolytic graphite layer is machined for the heat management instrument enough dimensions watt;
The sheet material of wherein said annealing pyrolytic graphite comprises a plurality of graphite planes that are parallel to each other in every millimeter thickness range of at least 0.075 degree.
14, the goods that comprise among the claim 9-13 heat treatment pyrolytic graphite that each method makes watt.
15, the goods that comprise the annealing pyrolytic graphite that each method is made among the claim 9-13.
16, the raw-material goods of pyrolytic graphite that comprise among the claim 1-8 each.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US50453703P | 2003-09-19 | 2003-09-19 | |
| US60/504,537 | 2003-09-19 | ||
| US10/761,567 | 2004-01-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1792124A true CN1792124A (en) | 2006-06-21 |
| CN100496186C CN100496186C (en) | 2009-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200480013321XA Expired - Lifetime CN100496186C (en) | 2003-09-19 | 2004-09-15 | Bulk high thermal conductivity material and method of making thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390146A (en) * | 2011-06-23 | 2012-03-28 | 蔡州 | Manufacture method of heat transfer layer and heat-radiating layer arranged on surface of heat-radiating object, and heat-radiating layer structure |
| CN102575914A (en) * | 2009-07-14 | 2012-07-11 | 密执安特种矿石公司 | Anisotropic thermal conduction element and manufacturing method |
| CN104813751A (en) * | 2012-09-25 | 2015-07-29 | 莫门蒂夫性能材料股份有限公司 | Thermal management assembly comprising bulk graphene material |
| CN105163564A (en) * | 2015-08-28 | 2015-12-16 | 努比亚技术有限公司 | Graphite cooling fin and liquid crystal display device |
| CN108793152A (en) * | 2018-07-03 | 2018-11-13 | 中国科学院金属研究所 | A kind of preparation method of the annealed state pyrolytic graphite with super-high heat-conductive performance |
| CN110747415A (en) * | 2019-12-10 | 2020-02-04 | 齐齐哈尔翔科新材料有限公司 | Heat treatment method of ultrahigh heat-conducting composite material for high-power chip heat sink |
| CN111587210A (en) * | 2017-12-29 | 2020-08-25 | 空中客车防务和空间公司 | High conductivity heat connector |
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2004
- 2004-09-15 CN CNB200480013321XA patent/CN100496186C/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575914A (en) * | 2009-07-14 | 2012-07-11 | 密执安特种矿石公司 | Anisotropic thermal conduction element and manufacturing method |
| CN102575914B (en) * | 2009-07-14 | 2014-08-27 | 密执安特种矿石公司 | Anisotropic thermal conduction element and manufacturing method |
| CN102390146A (en) * | 2011-06-23 | 2012-03-28 | 蔡州 | Manufacture method of heat transfer layer and heat-radiating layer arranged on surface of heat-radiating object, and heat-radiating layer structure |
| CN102390146B (en) * | 2011-06-23 | 2014-02-12 | 蔡州 | Manufacture method of heat transfer layer and heat-radiating layer arranged on surface of heat-radiating object, and heat-radiating layer structure |
| CN104813751A (en) * | 2012-09-25 | 2015-07-29 | 莫门蒂夫性能材料股份有限公司 | Thermal management assembly comprising bulk graphene material |
| CN104813751B (en) * | 2012-09-25 | 2019-12-31 | 莫门蒂夫性能材料股份有限公司 | Thermal management assembly including bulk graphene material |
| CN105163564A (en) * | 2015-08-28 | 2015-12-16 | 努比亚技术有限公司 | Graphite cooling fin and liquid crystal display device |
| CN111587210A (en) * | 2017-12-29 | 2020-08-25 | 空中客车防务和空间公司 | High conductivity heat connector |
| CN108793152A (en) * | 2018-07-03 | 2018-11-13 | 中国科学院金属研究所 | A kind of preparation method of the annealed state pyrolytic graphite with super-high heat-conductive performance |
| CN110747415A (en) * | 2019-12-10 | 2020-02-04 | 齐齐哈尔翔科新材料有限公司 | Heat treatment method of ultrahigh heat-conducting composite material for high-power chip heat sink |
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|---|---|
| CN100496186C (en) | 2009-06-03 |
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