CN106531706A - Artificial graphite film heat conduction and heat dissipation material with composite structure and preparation method of artificial graphite film heat conduction and heat dissipation material with composite structure - Google Patents
Artificial graphite film heat conduction and heat dissipation material with composite structure and preparation method of artificial graphite film heat conduction and heat dissipation material with composite structure Download PDFInfo
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- CN106531706A CN106531706A CN201610685252.1A CN201610685252A CN106531706A CN 106531706 A CN106531706 A CN 106531706A CN 201610685252 A CN201610685252 A CN 201610685252A CN 106531706 A CN106531706 A CN 106531706A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3735—Laminates or multilayers, e.g. direct bond copper ceramic substrates
Abstract
The invention discloses an artificial graphite film heat conduction and heat dissipation material with a composite structure and a preparation method of the artificial graphite film heat conduction and heat dissipation material with the composite structure. The artificial graphite film heat conduction and heat dissipation material with the composite structure comprises a heat conduction layer A and a single-sided or double-sided heat dissipation layer B, wherein the heat dissipation layer is directly combined with the heat conduction layer or is combined with the heat conduction layer through combining a transition layer C; the composite structure of the heat dissipation material is an AB type, an ACB type, an ABA type, an ACBCA type or an ACBA type; the heat conduction layer has a relatively high heat conduction coefficient and a point heat source subjected to heat dissipation is dispersed into a surface heat source; and the heat dissipation layer has a relatively high black-body radiation coefficient and has relatively high absorption capacity on heat of the heat source and relatively high outward thermal radiation capacity. The preparation method of the artificial graphite film heat conduction and heat dissipation material with the composite structure comprises the following steps of (1) obtaining the heat conduction layer or a heat conduction layer precursor; (2) uniformly coating a single side or double sides of the heat conduction layer or the heat conduction layer precursor with heat dissipation layer slurry and drying to form the heat dissipation layer; and (3) carrying out calendaring to obtain the artificial graphite film heat conduction and heat dissipation material with the composite structure.
Description
Technical field
The present invention relates to a kind of heat conduction and heat radiation composite and preparation method thereof, the artificial stone of more particularly to a kind of composite construction
Ink film heat conduction and heat radiation material and preparation method thereof, belongs to conductive heat conducting material field.
Background technology
With the high speed development of microelectronics integrated technology, the size of electronic devices and components, volume drastically reduce, thus band
The radiating difficulty come has badly influenced precision and the life-span of electronic device, becomes the technical bottleneck of device miniaturization, very big
The further development of integrated technology is constrained in degree.Traditional Heat Conduction Material is mainly metal material, such as copper, aluminium, silver etc., but
Being that metal material density is big, the coefficient of expansion is high, use requirement can not still being met in the occasion for requiring high-heat conductive efficency, such as LED shines
The fields such as bright, solar energy, microelectronics, electric electrician, Aero-Space, much higher using stability, the more preferable heat conduction of conduction efficiency
Graphite.In the recent period, conductive graphite is received significant attention with advantages such as its low cost, easy processing, good mechanical properties, not only may be used
The operation reliably and with long-term of electronic product is realized, and the radiating difficulty for solving microelectronic component provides important material base
Plinth, has the trend for progressively replacing conventional thermal conductive material.
Graphite radiating membrane material mainly divides three classes：Nano-sized carbon heat dissipation film, native graphite heat dissipation film, electrographite heat dissipation film
With.Nano-sized carbon heat dissipation film is that nano-carbon material is coated in the radiating that the good substrate material surface of the thermal diffusivities such as copper, aluminium is made
Film, it is most thin to accomplish 20 μm or so, have the advantages that low thermal resistance, process are simple.Native graphite heat dissipation film thermal conductivity factor compared with
It is low, and it is most thin accomplish 100 μm or so, occupy too many space in handset structure.Electrographite film is sub- generally by polyamides
Amine high temperature cabonization, graphitization, then calendering formation, is also performed to gluing, overlay film, bound edge process during making finished product.Manually
Graphite film can do very thin, and thermal conductivity factor is high, can reach 1500W/m.K, shortcoming be as surface blackbody coefficient is low,
Radiating effect is poor, accordingly, it would be desirable to existing electrographite film Heat Conduction Material is improved, to lift its heat dispersion.
The content of the invention
First goal of the invention of the present invention is for the native graphite heat dissipation film thermal conductivity factor described in background technology
It is relatively low, although and electrographite film with higher thermal conductivity factor, its surface blackbody coefficient is relatively low, and radiating effect is poor
Problem, there is provided a kind of composite construction electrographite film heat conduction and heat radiation material.
Realize that purpose of the present invention technical scheme is as follows：
A kind of composite construction electrographite film heat conduction and heat radiation material, the composite construction electrographite film heat conduction and heat radiation material by
Heat-conducting layer B, single or double heat dissipating layer A are constituted, heat dissipating layer and heat-conducting layer can directly in conjunction with or by with reference to transition zone C knots
Close, it is understood that there may be structure be AB types, ACB types, ABA type, ACBCA types and ACBA types.
In such scheme, described heat-conducting layer be polyimides graphitization electrographite film, Graphene coated film and
The combination of one kind in graphite paper or any two kinds and the above.
The blackbody coefficient of described heat dissipating layer>70%.As blackbody coefficient is the physical parameter of a routine,
It will be understood by those skilled in the art that there is many known materials to meet such requirement, it is also possible to various usual manners voluntarily
Configuration material component, meets such requirement.Although embodiment part gives multiple formulations to the present invention later, is intended merely to
The feasibility of the present invention is proved, the present invention is not limited to.
Described combination transition zone is for the material with reference to heat-conducting layer and heat dissipating layer, specially binding agent, or for leading
The mixed layer that thermosphere and heat dissipating layer are formed in coating or/and calender line, or be that heat-conducting layer presoma and heat dissipating layer are being applied
Cover or/and calender line in the mixed layer that formed.This can be contained in this composite construction electrographite film with reference to transition zone
In heat conduction and heat radiation material, it is also possible to be not contained in this composite construction electrographite film heat conduction and heat radiation material.
Described AB type composite construction electrographite film heat conduction and heat radiation materials are from top to bottom stacked by heat dissipating layer and heat-conducting layer
Form, described ACB type composite construction electrographite film heat conduction and heat radiation materials by heat dissipating layer, with reference to transition zone and heat-conducting layer by upper
Form to lower stacking, described ABA type composite construction electrographite film heat conduction and heat radiation material is by heat dissipating layer, heat-conducting layer and heat dissipating layer
From top to bottom stacking is formed, described ACBCA type composite construction electrographite film heat conduction and heat radiation materials by heat dissipating layer, combine transition
Layer, heat-conducting layer, from top to bottom stack with reference to transition zone and heat dissipating layer and form, described ACBA type composite construction electrographite films are led
Hot heat sink material by heat dissipating layer, from top to bottom stack with reference to transition zone, heat-conducting layer and heat dissipating layer and form.
Second goal of the invention of the present invention is to provide one kind to prepare composite construction electrographite film heat conduction and heat radiation material
Method.
Realize that purpose of the present invention technical scheme is as follows：
Step 1, acquisition heat-conducting layer, or heat-conducting layer presoma.By purchase or can prepare, or other any conventional sides
Formula is obtained.
Step 2, the slurry that will radiate uniformly are covered to the single or double of heat-conducting layer or heat-conducting layer presoma, and it is scattered to be dried formation
Thermosphere, the blackbody coefficient of heat dissipating layer is 70%-100%.
Step 3, calendering, obtain composite construction electrographite film heat conduction and heat radiation material, when in step 1 using heat-conducting layer,
Can be with omited steps 3.
Heat-conducting layer presoma described in such scheme is polyimides electrographite film, the Graphene painting without calendering
The combination of layer, the one kind in expanded graphite or any two kinds and the above.
The radiating slurry coating method is to spray, and for planting is printed in roller coating, blade coating, silk screen coating, bar coating, reticulate pattern
Kind or any two kinds and the above combination.
The calendering mode is rolling or one or two the combination in stamp rolling.
The artificial stone of composite construction obtained in the preparation method of the composite construction electrographite film heat conduction and heat radiation material of the present invention
Ink film heat conduction and heat radiation material, with electrographite heat conducting film as base material heat-conducting layer, in its surface recombination, heat dissipating layer is used as heat radiation
Layer, makes the heat dispersion of heat sink material be greatly improved.
Description of the drawings
Fig. 1 is the heat conduction and heat radiation material of the AB type structures of the present invention；
Heat conduction and heat radiation materials of the Fig. 2 for ACB type structures；
Heat conduction and heat radiation materials of the Fig. 3 for ABA type structure；
Heat conduction and heat radiation materials of the Fig. 4 for ACBCA type structures；
Heat conduction and heat radiation materials of the Fig. 5 for ACBA type structures；
A is heat dissipating layer, and B is heat-conducting layer, and C is to combine transition zone.
Specific embodiment
It is the specific embodiment of the present invention below：
Embodiment 1
As shown in figure 1, a kind of composite construction electrographite film heat conduction and heat radiation material and preparation method thereof, from top to bottom by dissipating
Thermosphere A and heat-conducting layer B compositions, preparation method comprise the following steps：
Step 1, first polyimide film is put in carbide furnace, is carbonized 10 hours with 1200 DEG C of heating-up temperature, Ran Houji
Continue in graphitizing furnace graphitization 24 hours at a temperature of 2800 DEG C, be cooled to room temperature and rolling forms electrographite heat-conducting layer B.
Step 2, take by following mass percent raw material configuration radiating slurry:45% aqueous epoxy resins, 30%
Effective heat sink material (nano carbon microsphere of 10%+10% CNT+10% of Graphene), 10% boron nitride, 5% polyamides
Amine wax, 5% propane diols and 5% aliphatic acid, above-mentioned raw materials are mixed, and with 100 revs/min at a temperature of 10 DEG C
Rotating speed is stirred 8 hours, forms radiating slurry.
Step 3, radiating slurry is uniformly scratched to step 1) the electrographite heat-conducting layer one side that obtains, and 120 DEG C of heating
Drying forms heat dissipating layer A, obtains the composite construction electrographite film heat conduction and heat radiation material being made up of heat-conducting layer B and heat dissipating layer A.
Embodiment 2
As shown in Fig. 2 a kind of composite construction electrographite film heat conduction and heat radiation material and preparation method thereof, from top to bottom by dissipating
Thermosphere A, constitute with reference to transition zone C and heat-conducting layer B, preparation method comprises the following steps：
Step 1, first polyimide film is put in carbide furnace, is carbonized 10 hours with 1200 DEG C of heating-up temperature, Ran Houji
Continue in graphitizing furnace graphitization 24 hours at a temperature of 2800 DEG C, be cooled to room temperature and form heat-conducting layer presoma.
Step 2, take by following mass percent raw material configuration radiating slurry:97.7% solvent borne polyurethane, 1%
Graphene, 1% carborundum, 0.1% modified urea solution, 0.1% glycerine and 0.1% mineral oil, by above-mentioned raw materials
Mixing, and stirred 0.5 hour with 5000 revs/min of rotating speed at a temperature of 50 DEG C, form radiating slurry.
Step 3, radiating slurry is uniformly scratched to step 1) one side of heat-conducting layer presoma that obtains, and 120 DEG C of heating
Drying forms heat dissipating layer.
Step 4, by step 3) process after semi-finished product process through rolling, formed by heat-conducting layer, with reference to transition zone and dissipated
The composite construction electrographite film heat conduction and heat radiation material of thermosphere composition.
Embodiment 3
As shown in figure 3, a kind of composite construction electrographite film heat conduction and heat radiation material and preparation method thereof, from top to bottom by dissipating
Thermosphere A, heat-conducting layer B and heat dissipating layer A compositions, preparation method comprise the following steps：
Step 1, first crystalline flake graphite is formed into expanded graphite through nitric acid and dioxygen water process, and roll acquisition graphite paper and lead
Thermosphere.
Step 2, take by following mass percent raw material configuration radiating slurry:60% thermally conductive resin is (including 25%
Solvent type polyurethane resin, 25% solvent borne epoxy resin and 10% solvent acrylic resin), 25% effective radiating material (5%
The nano carbon microsphere of+5% CNT+15% of Graphene), 5% carborundum, 3% propane diols, 4% polyamide wax and 3% ore deposit
Thing oil mixing, above-mentioned raw materials are mixed, and are stirred 5 hours with 2300 revs/min of rotating speed at a temperature of 20 DEG C, form radiating
Slurry.
Step 3, radiating slurry uniformly being scratched to step 1) the graphite paper heat-conducting layer that obtains is two-sided, and 120 DEG C of heating are dry
Dry formation heat dissipating layer, obtains the composite construction electrographite film heat conduction and heat radiation material being made up of heat-conducting layer and two-side radiation layer.
Embodiment 4
As shown in figure 4, a kind of composite construction electrographite film heat conduction and heat radiation material and preparation method thereof, from top to bottom by dissipating
Thermosphere A, constitute with reference to transition zone C, heat-conducting layer B, with reference to transition zone C and heat dissipating layer A, preparation method comprises the following steps：
Step 1, first polyimide film is put in carbide furnace, is carbonized 10 hours with 1200 DEG C of heating-up temperature, Ran Houji
Continue in graphitizing furnace graphitization 24 hours at a temperature of 2800 DEG C, be cooled to room temperature and form electrographite heat-conducting layer presoma.
Step 2, take by following mass percent raw material configuration radiating slurry:65% thermally conductive resin is (including 15%
Solvent type polyurethane resin, 30% solvent borne epoxy resin and 20% solvent acrylic resin), 21% effective radiating material (3%
The nano carbon microsphere of+3% CNT+15% of Graphene), 4% boron nitride, 4% glycerine, 3.5% dimethyl sulfoxide (DMSO), 2.5% second
Acid amides mixes, and above-mentioned raw materials are mixed, and is stirred 3 hours with 2300 revs/min of rotating speed at a temperature of 40 DEG C, forms radiating
Slurry.
Step 3, the uniform roller coating of slurry of radiating are to step 1) the electrographite heat-conducting layer presoma that obtains is two-sided, and 120
DEG C heat drying forms heat dissipating layer.
Step 4, by step 3) process after semi-finished product roll through stamp, formed by heat-conducting layer, two-sided combination transition zone
With the composite construction electrographite film heat conduction and heat radiation material of two-side radiation layer composition.
Embodiment 5
As shown in figure 5, a kind of composite construction electrographite film heat conduction and heat radiation material and preparation method thereof, from top to bottom by dissipating
Thermosphere A, constitute with reference to transition zone C, heat-conducting layer B and heat dissipating layer A, preparation method comprises the following steps：
Step 1, first polyimide film is put in carbide furnace, is carbonized 10 hours with 1200 DEG C of heating-up temperature, Ran Houji
Continue in graphitizing furnace graphitization 24 hours at a temperature of 2800 DEG C, be cooled to room temperature and form electrographite heat-conducting layer presoma.
Step 2, take by following mass percent raw material configuration radiating slurry:60% thermally conductive resin is (including 18%
Waterborne polyurethane resin, 27% aqueous epoxy resins, 15% solvent acrylic resin), 23% effective radiating material (6% stone
The nano carbon microsphere of black alkene+17%), 7% magnesia, 2.5% ethanol, 4% polyurethane-modified ether, 3.5% aliphatic acid mixing, will be upper
Raw material mixing is stated, and is stirred 3 hours with 5000 revs/min of rotating speed at a temperature of 50 DEG C, form radiating slurry.
Step 3, the uniform roller coating of slurry of radiating are to step 1) the electrographite heat-conducting layer presoma one side that obtains, and 120
DEG C heat drying forms heat dissipating layer.
Step 4, by step 3) process after semi-finished product rolling process.
Step 5, the uniform roller coating of slurry of radiating are to step 4) another side of composite that obtains, and 120 DEG C of heating are dry
Dry formation heat dissipating layer, finally obtains heat dissipating layer, the composite construction electrographite film constituted with reference to transition zone, heat-conducting layer and heat dissipating layer
Heat conduction and heat radiation material.
Following table be composite construction electrographite film heat conduction and heat radiation material obtained in embodiments of the invention 1- embodiments 5 with it is existing
The performance parameter contrast list of somebody's work graphite film：
By upper table, we can visually see, and lead according to composite construction electrographite film obtained in technique of the invention
The horizontal thermal conductivity factor of hot heat sink material, film layer radiance compared with the parameter of existing electrographite film, with significantly entering
Step, can be obviously improved the heat dispersion of heat sink material, therefore, the composite construction electrographite film heat conduction and heat radiation material of the present invention
And preparation method thereof there is more preferable market prospects and application value.
Finally it should be noted that the foregoing is only several preferred embodiments of the present invention, it is not limited to
The present invention.By taking the formula of the slurry that radiates as an example, as blackbody coefficient is the physical parameter of a routine, it is given to its
After numerical requirements, those skilled in the art have various conventional implementations, are only more than to carry out example；The formula for being shown
Diversity also demonstrate the diversity and routinely of its implementation.Although having carried out in detail to the present invention with reference to the foregoing embodiments
Thin explanation, for a person skilled in the art, which still can enter to the technical scheme described in foregoing embodiments
Row modification, or equivalent is carried out to which part technical characteristic.It is all within the spirit and principles in the present invention, made appoint
What modification, equivalent, improvement, should be included within the scope of the present invention.
Claims (9)
1. a kind of composite construction electrographite film heat conduction and heat radiation material, it is characterised in that：The composite construction electrographite film heat conduction
Heat sink material is made up of heat-conducting layer A, single or double heat dissipating layer B, heat dissipating layer and heat-conducting layer directly in conjunction with or by combining
Cross layer C to combine；The composite construction of the heat sink material is AB types, ACB types, ABA type, ACBCA types or ACBA types.
2. a kind of preparation method of composite construction electrographite film heat conduction and heat radiation material is characterized in that, comprise the following steps：
Step 1, acquisition heat-conducting layer, or heat-conducting layer presoma；
Step 2, single or double heat dissipating layer slurry uniformly covered to heat-conducting layer or heat-conducting layer presoma, and it is dried formation radiating
Layer；
Step 3, calendering, obtain composite construction electrographite film heat conduction and heat radiation material；
Wherein, the heat-conducting layer presoma is the material that can form heat-conducting layer after calendering；
Wherein, in step 1 using heat-conducting layer when, can be with omited steps 3, it is also possible to not omited steps 3.
3. a kind of composite construction electrographite film heat conduction and heat radiation material according to claim 1, it is characterised in that：Described
Heat-conducting layer be polyimides graphitization electrographite film, Graphene coated film and graphite paper in one kind or it is any two kinds and
Combination above.
4. a kind of composite construction electrographite film heat conduction and heat radiation material according to claim 1, it is characterised in that：Described
The blackbody coefficient of heat dissipating layer>70%.
5. a kind of composite construction electrographite film heat conduction and heat radiation material according to claim 1, it is characterised in that：Described
It, for the material with reference to heat-conducting layer and heat dissipating layer, specially binding agent, or is that heat-conducting layer and heat dissipating layer exist with reference to transition zone to be
The mixed layer that formed in coating or/and calender line, or be heat-conducting layer presoma and heat dissipating layer in coating or/and calender line
The mixed layer of middle formation.This is can be contained in this composite construction electrographite film heat conduction and heat radiation material with reference to transition zone,
Can also be not contained in this composite construction electrographite film heat conduction and heat radiation material.
6. a kind of composite construction electrographite film heat conduction and heat radiation material according to claim 1, it is characterised in that：Described
AB type composite construction electrographite film heat conduction and heat radiation materials are from top to bottom stacked by heat dissipating layer and heat-conducting layer and are formed, described ACB
Type composite construction electrographite film heat conduction and heat radiation material by heat dissipating layer, from top to bottom stack with reference to transition zone and heat-conducting layer and form,
Described ABA type composite construction electrographite film heat conduction and heat radiation material is from top to bottom stacked by heat dissipating layer, heat-conducting layer and heat dissipating layer
Form, described ACBCA type composite construction electrographite film heat conduction and heat radiation materials are by heat dissipating layer, with reference to transition zone, heat-conducting layer, knot
Close transition zone and heat dissipating layer from top to bottom to stack and form, described ACBA type composite construction electrographite film heat conduction and heat radiation materials by
Heat dissipating layer, from top to bottom stack with reference to transition zone, heat-conducting layer and heat dissipating layer and form.
7. the preparation method of a kind of composite construction electrographite film heat conduction and heat radiation material according to claim 2, its feature
It is：The heat-conducting layer presoma is without in the polyimides electrographite film, graphite ene coatings, expanded graphite for rolling
A kind of combination of or any two kinds and the above.
8. the preparation method of a kind of composite construction electrographite film heat conduction and heat radiation material according to claim 2, its feature
It is：Described heat dissipating layer slurry coating method is spraying, and roller coating, blade coating, silk screen coating, bar are coated, reticulate pattern printing kind
A kind of combination of or any two kinds and the above.
9. the preparation method of a kind of composite construction electrographite film heat conduction and heat radiation material according to claim 2, its feature
It is：Described calendering mode is rolling or one or two the combination in stamp rolling.
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| CN201610685252.1A CN106531706A (en) | 2016-08-17 | 2016-08-17 | Artificial graphite film heat conduction and heat dissipation material with composite structure and preparation method of artificial graphite film heat conduction and heat dissipation material with composite structure |
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| CN107031144A (en) * | 2017-04-19 | 2017-08-11 | 江苏联科纳米科技有限公司 | A kind of high efficiency and heat radiation metal foil and preparation method and application |
| CN107311659A (en) * | 2017-06-22 | 2017-11-03 | 李若明 | A kind of preparation method of graphite film/graphene composite film |
| CN107809885A (en) * | 2017-10-10 | 2018-03-16 | 重庆云天化瀚恩新材料开发有限公司 | A kind of graphite film metallic composite of high-bond and preparation method thereof |
| CN108749177A (en) * | 2018-05-08 | 2018-11-06 | 中山大学 | A kind of pyrolytic graphite/epoxy resin/ultra-high molecular weight polyethylene sandwich structure composite material and preparation method |
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| CN114523736A (en) * | 2022-02-28 | 2022-05-24 | 安徽碳华新材料科技有限公司 | High-performance artificial graphite high-conductivity film applied to heat dissipation structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107031144A (en) * | 2017-04-19 | 2017-08-11 | 江苏联科纳米科技有限公司 | A kind of high efficiency and heat radiation metal foil and preparation method and application |
| CN107311659A (en) * | 2017-06-22 | 2017-11-03 | 李若明 | A kind of preparation method of graphite film/graphene composite film |
| CN107809885A (en) * | 2017-10-10 | 2018-03-16 | 重庆云天化瀚恩新材料开发有限公司 | A kind of graphite film metallic composite of high-bond and preparation method thereof |
| CN108749177A (en) * | 2018-05-08 | 2018-11-06 | 中山大学 | A kind of pyrolytic graphite/epoxy resin/ultra-high molecular weight polyethylene sandwich structure composite material and preparation method |
| CN109729699A (en) * | 2019-01-11 | 2019-05-07 | 厦门大学 | A kind of phase transformation graphene heat-conducting pad, preparation method and applications |
| CN110048515A (en) * | 2019-05-23 | 2019-07-23 | 昆山联滔电子有限公司 | Wireless charging mould group and its manufacture craft |
| CN110048515B (en) * | 2019-05-23 | 2023-11-28 | 昆山联滔电子有限公司 | Wireless charging module and manufacturing process thereof |
| CN112735730A (en) * | 2021-01-18 | 2021-04-30 | 无锡蓝沛新材料科技股份有限公司 | Wireless charging coil module and preparation method thereof |
| CN114523736A (en) * | 2022-02-28 | 2022-05-24 | 安徽碳华新材料科技有限公司 | High-performance artificial graphite high-conductivity film applied to heat dissipation structure |
| CN114523736B (en) * | 2022-02-28 | 2024-02-09 | 安徽碳华新材料科技有限公司 | High-performance artificial graphite high-conductivity film applied to heat dissipation structure |
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