CN108456494A - A kind of graphite flake and preparation method thereof - Google Patents
A kind of graphite flake and preparation method thereof Download PDFInfo
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- CN108456494A CN108456494A CN201810151423.1A CN201810151423A CN108456494A CN 108456494 A CN108456494 A CN 108456494A CN 201810151423 A CN201810151423 A CN 201810151423A CN 108456494 A CN108456494 A CN 108456494A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2483/00—Presence of polysiloxane
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Abstract
The present invention provides a kind of graphite flake, structure includes：Insulating layer；The graphite linings being compounded on the insulating layer；The metal screen layer being compounded in the graphite linings；The heat-conducting glue layer being compounded on metal screen layer.The present invention is set by the specific structure and composition of above-mentioned insulating layer, graphite linings, metal screen layer and heat-conducting glue layer, continuous high-efficient can be produced 10 to 100um thickness by the graphite flake being prepared, the graphite radiating material that the ultralow thermal resistance of 70db or more shield effectiveness can be achieved between 10MHZ to 40GHZ, is greatly improved the application range and added value of graphite material.The vertical thermal of material is greatly reduced, the competitiveness of product is improved under the premise of ensureing electromagnetic wave effectively shielding and conducting by the formula design to heat-conducting glue layer simultaneously.
Description
Technical field
The present invention relates to cooling fin technical fields, more particularly, to a kind of graphite flake and preparation method thereof.
Background technology
Conductive graphite piece is also referred to as graphite heat radiation fin, is a kind of completely new heat conduction and heat radiation material, and there is unique crystal grain to be orientated,
Uniform heat conduction in both directions, laminar structured to be well adapted for any surface, shielding heat source disappears with improvement while component
Take the performance of electronic product.
Graphite flake gum copper foil disclosed in the prior art, intermediate glue-line are thermal insulation layers, as graphite flake-glue-line and copper foil
Structure.Heat cannot scatter away in time in practical applications, and thermal resistance is higher.The small chip cooling of power is can be only applied to, with
The propulsion of Chinese 5G projects, application of the high-power chip in mobile phone project become Great possibility, and corresponding radiating component is matched
Set seems particularly urgent.
Invention content
In view of this, the technical problem to be solved in the present invention is to provide a kind of graphite flake, graphite flake provided by the invention
Shield effectiveness is good, and thermal resistance is low.
The present invention provides a kind of graphite flakes, including：
Insulating layer；
The graphite linings being compounded on the insulating layer；
The metal screen layer being compounded in the graphite linings；
The heat-conducting glue layer being compounded on metal screen layer.
Preferably, the insulating layer is that one or more of epoxy, polyurethane and silica gel are compound with conductive particle；Institute
The thickness for stating insulating layer is 2~10 μm；The conductive particle is in boron nitride, aluminium oxide, aluminium powder, silicon nitride and aluminium nitride
It is one or more of.
Preferably, the insulating layer includes：
20~50 parts by weight of one or more of epoxy, polyurethane and silica gel；
Curing agent 0~-- 20 parts by weight
50~80 parts by weight of conductive particle.
Preferably, the thickness of the graphite linings is 10~100 μm.
Preferably, the metal screen layer is by aluminium, silver, copper, one or more of gold composition；The metal screen layer
Thickness is 1~3 μm.
Preferably, the heat-conducting glue layer is that one or more of epoxy, polyurethane and silica gel are compound with conductive particle；
The thickness of the heat-conducting glue layer is 2~20 microns；The conductive particle is selected from boron nitride, aluminium oxide, aluminium powder, silicon nitride and nitridation
One or more of aluminium.
Preferably, in the heat-conducting glue layer：
20~50 parts by weight of one or more of epoxy, polyurethane and silica gel；
Curing agent 0~-- 20 parts by weight
50~80 parts by weight of conductive particle.
Preferably, the graphite flake further includes being compound in release film of the insulating layer far from graphite linings side；Further include
The protective film being compound in the heat-conducting glue layer；The protective film is selected from one or more of PE, PP and PET.
The present invention provides a kind of preparation methods of graphite flake, including：
Insulating layer is coated on release film；
Graphite film is fitted on the insulating layer；
By metal screen layer vacuum evaporation on the graphite film；
Heat-conducting glue layer is coated on the metal screen layer, dries, obtains graphite film.
Preferably, the vacuum degree of the vacuum evaporation is 10-3；The speed of the vacuum evaporation is 5~10m/min.
Compared with prior art, the present invention provides a kind of graphite flakes, including：Insulating layer；It is compounded on the insulating layer
Graphite linings；The metal screen layer being compounded in the graphite linings；The heat-conducting glue layer being compounded on metal screen layer.The present invention is logical
Cross specific structure and the composition setting of above-mentioned insulating layer, graphite linings, metal screen layer and heat-conducting glue layer, the graphite flake being prepared
Producing for continuous high-efficient 10 can be arrived 100um thickness, between 10MHZ to 40GHZ can achieve over 70db or more shields
The application range and added value of graphite material is greatly improved in the graphite radiating material for covering the ultralow thermal resistance of effect.Pass through simultaneously
Formula design to heat-conducting glue layer greatly reduces the vertical of material under the premise of ensureing electromagnetic wave effectively shielding and conducting
Heat improves the competitiveness of product.
Description of the drawings
Fig. 1 is the structure of the graphite flake of the preferred embodiment of the invention.
Specific implementation mode
The present invention provides a kind of graphite flake and preparation method thereof, those skilled in the art can use for reference present disclosure, fit
When modified technique parameter is realized.In particular, it should be pointed out that all similar substitutions and modifications are for a person skilled in the art
It is it will be apparent that they shall fall within the protection scope of the present invention.The method of the present invention and application have passed through preferred embodiment
Be described, related personnel obviously can not depart from the content of present invention, in spirit and scope to methods herein and application into
Row change is suitably changed and is combined, to realize and apply the technology of the present invention.
The present invention provides a kind of graphite flakes, including：
Insulating layer；
The graphite linings being compounded on the insulating layer；
The metal screen layer being compounded in the graphite linings；
The heat-conducting glue layer being compounded on metal screen layer.
Graphite flake provided by the invention includes insulating layer.
According to the present invention, the insulating layer is preferably one or more of epoxy, polyurethane and silica gel and conductive particle
It is compound；More preferably one or more of epoxy, polyurethane and conductive particle is compound.
According to the present invention, the insulating layer preferably includes：
20~50 parts by weight of one or more of epoxy, polyurethane and silica gel；
Curing agent 0~-- 20 parts by weight
50~80 parts by weight of conductive particle.
The insulating layer more preferably includes：
25~45 parts by weight of one or more of epoxy, polyurethane and silica gel；
Curing agent 0~-- 20 parts by weight
55~75 parts by weight of conductive particle.
Wherein, the curing agent is preferably entrained according to aforementioned proportion in the epoxy, polyurethane or silica gel, adulterates ratio
Example is known to those skilled in the art, the present invention is to this without limiting.
Wherein, the conductive particle be preferably selected from one kind in boron nitride, aluminium oxide, aluminium powder, silicon nitride and aluminium nitride or
It is several；More preferably boron nitride.
The thickness of insulating layer of the present invention is preferably 2~10 μm.
Graphite flake provided by the invention includes the graphite linings being compounded on the insulating layer.
The present invention for the graphite linings without limit, it is well known to those skilled in the art.
The thickness of the graphite linings is preferably 10~100 μm；More preferably 15~40 μm.
Graphite flake provided by the invention includes the metal screen layer being compounded in the graphite linings.
According to the present invention, the metal screen layer is preferably by aluminium, silver, copper, one or more of gold composition；Can be single
A kind of only metal, can also be plated the superposition of different layers by different metal.
The thickness of the metal screen layer is preferably 1~3 μm.
Graphite flake provided by the invention includes the heat-conducting glue layer being compounded on metal screen layer.
According to the present invention, the heat-conducting glue layer is one or more of epoxy, polyurethane and silica gel and conductive particle
It is compound；More preferably one or more of silica gel, polyurethane and conductive particle is compound；Most preferably silica gel and conductive particle
It is compound.
Wherein, the conductive particle be preferably selected from one kind in boron nitride, aluminium oxide, aluminium powder, silicon nitride and aluminium nitride or
It is several；More preferably boron nitride.
According to the present invention, the thickness of the heat-conducting glue layer is preferably 2~20 microns；More preferably 5~15 microns.
According to the present invention, the heat-conducting glue layer preferably includes：
20~50 parts by weight of one or more of epoxy, polyurethane and silica gel；
Curing agent 0~-- 20 parts by weight
50~80 parts by weight of conductive particle.
The heat-conducting glue layer more preferably includes：
25~45 parts by weight of one or more of epoxy, polyurethane and silica gel；
Curing agent 0~-- 20 parts by weight
55~75 parts by weight of conductive particle.
Wherein, the curing agent is entrained in the epoxy, polyurethane or silica gel, and doping ratio is people in the art
Member is known, and the present invention is to this without limiting.
In the present invention, the graphite flake further includes being compound in release film of the insulating layer far from graphite linings side.
For the present invention for the release film without limiting, those skilled in the art are known.
The thickness of release film of the present invention is preferably 10~50um；Breadth is between 200mm to 1800mm.It is required that surface
Totally, neatly, even tension is consistent when unreeling.
In the present invention, the graphite flake further includes the protective film being compound in the heat-conducting glue layer.
The present invention for the protective film thickness without limiting, those skilled in the art are known.
The protective film is preferably selected from one or more of PE, PP and PET.
The present invention provides a kind of graphite flakes, including：Insulating layer；The graphite linings being compounded on the insulating layer；It is compounded in
Metal screen layer in the graphite linings；The heat-conducting glue layer being compounded on metal screen layer.The present invention passes through above-mentioned insulating layer, stone
Layer of ink, the specific structure of metal screen layer and heat-conducting glue layer and composition setting, the graphite flake being prepared can be by continuous high-efficient
Produce 10 arrive 100um thickness, the ultralow heat of 70db or more shield effectiveness can be achieved between 10MHZ to 40GHZ
The application range and added value of graphite material is greatly improved in the graphite radiating material of resistance.Simultaneously by matching to heat-conducting glue layer
Side's design greatly reduces the vertical thermal of material, improves product under the premise of ensureing electromagnetic wave effectively shielding and conducting
Competitiveness.
The present invention provides a kind of preparation methods of graphite flake, including：
Insulating layer is coated on release film；
Graphite film is fitted on the insulating layer；
By metal screen layer vacuum evaporation on the graphite film；
Heat-conducting glue layer is coated on the metal screen layer, dries, obtains graphite film.
Insulating layer is coated on release film by the preparation method of graphite flake provided by the invention first.
Present invention firstly provides release films：The thickness of the release film is preferably 10~50um；Breadth arrives for 200mm
Between 1800mm.It is required that surface is clean, neatly, even tension is consistent when unreeling.
The present invention uses one or more of epoxy, polyurethane and silica gel described in above-mentioned technical proposal and conductive particle
It is for use to be made into insulative glue of the viscosity between 1000cps to 5000cps.
The ready release film is unreeled on coating line by coating head, thick upper of one layer of 2~5um is uniformly coated with
The insulative glue of preparation is stated, by the oven between 100 DEG C to 200 DEG C can be provided by solvent surface drying, is wound.
The present invention for the oven concrete model without limiting, those skilled in the art are known.
Graphite film is fitted on the insulating layer；
The present invention for the fitting design parameter without limiting, preferably thermal-adhering.
Then, by metal screen layer vacuum evaporation on the graphite film；
In the present invention, the vacuum degree of the vacuum evaporation is preferably 10-3；The speed of the vacuum evaporation is preferably 5~
10m/min。
Using above-mentioned parameter by the aluminium described in above-mentioned technical proposal of the present invention, silver-colored, copper, one or more of gold is deposited and arrives
Metallic shield layer thickness of the present invention.
Then, heat-conducting glue layer is coated on the metal screen layer, is dried.
Prepare heat conduction glue according to proportioning of the present invention, heat-conducting glue layer is coated on the metal screen layer, is obtained
The thickness limited to the present invention.
The present invention has been clearly described above-mentioned all thickness, and details are not described herein.
For the present invention for the coating and the concrete mode dried without limiting, those skilled in the art are known.
Finally, heat conduction glue surface is covered into last layer pe, pp or pet protective film；
It then tests, cuts to product, obtain finished product.
Fig. 1 is the structure of the graphite flake of the preferred embodiment of the invention, wherein：
1 is insulating layer, and 2 be metal layer, and 3 be heat-conducting glue layer, and 4 be release film, and 5 be protective film.
The present invention obtains metal screen layer instead of prior art copper-surfaced foil on the market by the way of above-mentioned vacuum evaporation
Technique, formula design in combination with specific insulating layer and heat-conducting glue layer so that the graphite flake finally prepared have it is relatively low
Resistance value and preferable shield effectiveness.
In order to further illustrate the present invention, with reference to embodiments to graphite flake provided by the invention and preparation method thereof into
Row detailed description.
Embodiment 1
Raw material preparation：
Release film：Prepare specification width, thickness is the release film of 35um, and breadth 520mm, surface is clean, neatly, puts
Even tension is consistent when volume.
Insulating layer：The insulating layer of 4um thickness is applied with the glue that formula as below is made into, formula is following (100 parts of meters)：
ZA302 polyurethane adhesives (hold energy)：20--50；
BN-2 boron nitride powders (Jinzhou Hai Xin)：50--80；
Take the circumstances into consideration to use additive according to requirements on the basis of being formulated herein.
Release film applies insulating layer：Ready release film is unreeled on coating line by coating head, is uniformly coated with one layer
Solvent surface drying is cured by the oven that can provide 150 °, is wound by the insulating heat-conductive glue of 4um thickness.
The graphite film of one layer of 20um thickness of hot paste on toward insulating layer；
The metal screen layer of last layer 1um thickness is deposited in graphite film surface vacuum；
The heat-conducting glue layer of 20um thickness and drying are coated in layer on surface of metal, heat-conducting glue is with reference to formula as below (100 parts of meters)：
HR-420AB silica gel (auspicious, the AB ratios 1 of Dongguan remittance:1)：20--50；
BN-2 boron nitride powders (Jinzhou Hai Xin)：50--80；
Take the circumstances into consideration to use additive according to requirements on the basis of being formulated herein.
Last layer pp protective films are covered in heat conduction glue surface；It tests, cuts to product, obtain finished product.
Embodiment 2
Raw material preparation：
Release film：Prepare specification width, thickness is the PET release films of 50um, and breadth 520mm, surface is clean, whole
Clean, even tension is consistent when unreeling.
Insulating layer：The insulating layer of 5um thickness is applied with the glue that formula as below is made into, formula is following (100 parts of meters)：
Epoxy 153AB glue (Ao Sibang, AB ratios 1:1)：20--50；
BN-2 boron nitride powders (Jinzhou Hai Xin)：50--80；
Take the circumstances into consideration to use additive according to requirements on the basis of being formulated herein
Release film applies insulating layer：Ready release film is unreeled on coating line by coating head, is uniformly coated with one layer
Solvent surface drying is cured by the oven that can provide 180 °, is wound by the insulating heat-conductive glue of 5um thickness.
The graphite film of one layer of 25um thickness of hot paste on toward insulating layer；
The metal screen layer of last layer 2um thickness is deposited in graphite film surface vacuum；
The heat-conducting glue layer of 20um thickness and drying are coated in layer on surface of metal, heat-conducting glue is with reference to formula as below (100 parts of meters)：
HR-420AB silica gel (auspicious, the AB ratios 1 of Dongguan remittance:1)：20--50；
BN-2 boron nitride powders (Jinzhou Hai Xin)：50--80；
Take the circumstances into consideration to use additive according to requirements on the basis of being formulated herein
Last layer pe protective films are covered in heat conduction glue surface；It tests, cuts to product, obtain finished product.
Embodiment 3
Raw material preparation：
Release film：Prepare specification width, thickness is the release film of 50um, and breadth 520mm, surface is clean, neatly, puts
Even tension is consistent when volume.
Insulating layer：The insulating layer of 3um thickness is applied with the glue that formula as below is made into, formula is following (100 parts of meters)：
ZA302 polyurethane adhesives (hold energy)：20--50；
BN-2 boron nitride powders (Jinzhou Hai Xin)：50--80；
Take the circumstances into consideration to use additive according to requirements on the basis of being formulated herein
Release film applies insulating layer：Ready release film is unreeled on coating line by coating head, is uniformly coated with one layer
Solvent surface drying is cured by the oven that can provide 165 °, is wound by the insulating heat-conductive glue of 3um thickness.
The graphite film of one layer of 30um thickness of hot paste on toward insulating layer；
The metal screen layer of last layer 3um thickness is deposited in graphite film surface vacuum；
The heat-conducting glue layer of 20um thickness and drying are coated in layer on surface of metal, heat-conducting glue is with reference to formula as below (100 parts of meters)：
HR-420AB silica gel (auspicious, the AB ratios 1 of Dongguan remittance:1)：20--50；
BN-2 boron nitride powders (Jinzhou Hai Xin)：50--80；
Take the circumstances into consideration to use additive according to requirements on the basis of being formulated herein.
Last layer pet protective films are covered in heat conduction glue surface；It tests, cuts to product, obtain finished product.
Embodiment 4
Raw material preparation：
Release film：Prepare specification width, thickness is the release film of 35um, and breadth 520mm, surface is clean, neatly, puts
Even tension is consistent when volume.
Insulating layer：The insulating layer of 4um thickness is applied with the glue that formula as below is made into, formula is following (100 parts of meters)：
ZA302 polyurethane adhesives (hold energy)：25--45；
BN-2 boron nitride powders (Jinzhou Hai Xin)：55--75；
Take the circumstances into consideration to use additive according to requirements on the basis of being formulated herein.
Release film applies insulating layer：Ready release film is unreeled on coating line by coating head, is uniformly coated with one layer
Solvent surface drying is cured by the oven that can provide 150 °, is wound by the insulating heat-conductive glue of 4um thickness.
The graphite film of one layer of 20um thickness of hot paste on toward insulating layer；
The metal screen layer of last layer 1um thickness is deposited in graphite film surface vacuum；
The heat-conducting glue layer of 20um thickness and drying are coated in layer on surface of metal, heat-conducting glue is with reference to formula as below (100 parts of meters)：
HR-420AB silica gel (auspicious, the AB ratios 1 of Dongguan remittance:1)：25--45；
BN-2 boron nitride powders (Jinzhou Hai Xin)：55--75；
Take the circumstances into consideration to use additive according to requirements on the basis of being formulated herein.
Last layer pp protective films are covered in heat conduction glue surface；It tests, cuts to product, obtain finished product.
Embodiment 5
Performance measurement is carried out to the product that the embodiment of the present invention 1~4 is prepared, the results are shown in Table 1.Table 1 is this hair
The performance measurement result for the graphite flake that bright embodiment is prepared.
The performance measurement result for the graphite flake that 1 embodiment of the present invention of table is prepared.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of graphite flake, including：
Insulating layer；
The graphite linings being compounded on the insulating layer；
The metal screen layer being compounded in the graphite linings；
The heat-conducting glue layer being compounded on metal screen layer.
2. graphite flake according to claim 1, which is characterized in that the insulating layer is in epoxy, polyurethane and silica gel
It is one or more of compound with conductive particle；The thickness of the insulating layer is 2~10 μm；The conductive particle be selected from boron nitride,
One or more of aluminium oxide, aluminium powder, silicon nitride and aluminium nitride.
3. graphite flake according to claim 2, which is characterized in that the insulating layer includes：
20~50 parts by weight of one or more of epoxy, polyurethane and silica gel；
Curing agent 0~-- 20 parts by weight
50~80 parts by weight of conductive particle.
4. graphite flake according to claim 1, which is characterized in that the thickness of the graphite linings is 10~100 μm.
5. graphite flake according to claim 1, which is characterized in that the metal screen layer is by aluminium, silver, copper, and one in gold
Kind or several compositions；The thickness of the metal screen layer is 1~3 μm.
6. graphite flake according to claim 1, which is characterized in that the heat-conducting glue layer is in epoxy, polyurethane and silica gel
One or more it is compound with conductive particle；The thickness of the heat-conducting glue layer is 2~20 microns；The conductive particle is selected from nitrogen
Change one or more of boron, aluminium oxide, aluminium powder, silicon nitride and aluminium nitride.
7. graphite flake according to claim 6, which is characterized in that in the heat-conducting glue layer：
20~50 parts by weight of one or more of epoxy, polyurethane and silica gel；
Curing agent 0~-- 20 parts by weight
50~80 parts by weight of conductive particle.
8. graphite flake according to claim 1, which is characterized in that the graphite flake further includes that be compound in the insulating layer remote
Release film from graphite linings side；It further include the protective film being compound in the heat-conducting glue layer；The protective film be selected from PE, PP and
One or more of PET.
9. a kind of preparation method of graphite flake, including：
Insulating layer is coated on release film；
Graphite film is fitted on the insulating layer；
By metal screen layer vacuum evaporation on the graphite film；
Heat-conducting glue layer is coated on the metal screen layer, dries, obtains graphite film.
10. preparation method according to claim 9, which is characterized in that the vacuum degree of the vacuum evaporation is 10-3；It is described
The speed of vacuum evaporation is 5~10m/min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113956806A (en) * | 2021-12-07 | 2022-01-21 | 江苏穗实科技有限公司 | Preparation method of flexible composite material for MiniLED |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514297A (en) * | 2011-12-15 | 2012-06-27 | 烟台德邦科技有限公司 | Metal-clad graphite heat radiation composite material and preparation method thereof |
| CN204058341U (en) * | 2014-07-01 | 2014-12-31 | 苏州斯迪克新材料科技股份有限公司 | Homogeneouslly-radiating paster |
| CN105803403A (en) * | 2016-03-15 | 2016-07-27 | 东华大学 | Electric actuating oxidized graphene/metal double-layer thin film and preparation method thereof |
-
2018
- 2018-02-14 CN CN201810151423.1A patent/CN108456494B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514297A (en) * | 2011-12-15 | 2012-06-27 | 烟台德邦科技有限公司 | Metal-clad graphite heat radiation composite material and preparation method thereof |
| CN204058341U (en) * | 2014-07-01 | 2014-12-31 | 苏州斯迪克新材料科技股份有限公司 | Homogeneouslly-radiating paster |
| CN105803403A (en) * | 2016-03-15 | 2016-07-27 | 东华大学 | Electric actuating oxidized graphene/metal double-layer thin film and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113956806A (en) * | 2021-12-07 | 2022-01-21 | 江苏穗实科技有限公司 | Preparation method of flexible composite material for MiniLED |
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