CN106011756B - A kind of metal olefinic carbon heat conducting film and preparation method thereof - Google Patents
A kind of metal olefinic carbon heat conducting film and preparation method thereof Download PDFInfo
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
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- C23C14/185—Metallic material, boron or silicon on other inorganic substrates by cathodic sputtering
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Abstract
A kind of metal olefinic carbon heat conducting film of present invention offer and preparation method thereof, metal olefinic carbon heat conducting film are combined by least one layer of graphene film and at least one layer of metal film, and metal film deposits on graphene film, and the thickness of graphene film and metal film ratio is 29: 1.Metal film of the present invention deposits on graphene film, metal film and graphene film, which combine, does not pass through the effect of glue, avoid the generation of thermal resistance, improve thermal coefficient, the coefficient of heat conduction of product can be improved through the invention, the product that multi-thickness, the different coefficients of heat conduction can be prepared, can be applied to the consumer electronics products such as mobile phone products, tablet computer, TV.
Description
Technical field
The invention belongs to Heat Conduction Material fields, and in particular to a kind of metal olefinic carbon heat conducting film and preparation method thereof.
Background technology
As microelectronic component must move as early as possible to miniaturization, high power and high speed development, the high heat generated
It removes, it is made to work under the operation temperature of safety, be otherwise easily reduced the performance of device, seriously affect the reliability of device and make
Use the service life.
Graphene is a kind of arranged according to hexagon by carbon atom and carbon molecules made of being connected with each other, structure are non-
Often stablize, be currently most thin be in the world but also most hard nano material, it is almost fully transparent, only absorbs 2.3%
Light；Thermal coefficient is up to 5000W/mK, is higher than carbon nanotube and diamond, its electron mobility is more than under room temperature
15000cm2/ Vs, resistivity about 10-6 Ω cm higher than carbon nanotubes or silicon crystal, it is lower than copper or silver, because of graphene
Have the characteristics that high conductivity, high-termal conductivity, high tenacity, high intensity, extra specific surface area, it can be in electronics, space flight military project, new
It is used widely in the fields such as the energy, new material.
Chinese patent application CN103407268A discloses a kind of preparation method of the composite heat conduction film containing graphene, including
Following steps：Complexing agent is prepared, complexing agent is made of following component according to weight ratio：3~5 parts of copper powder, butyl acrylate 10~
20 parts, 5~10 parts of guar gum, 1~3 part of magnesium silicate；At normal temperatures by copper powder, butyl acrylate, guar gum and magnesium silicate
It is uniformly mixed, after mixing, obtained complexing agent will be prepared and be uniformly applied on base material；Graphene film is covered in
Above complexing agent, 30min is toasted at 50 DEG C；Complexing agent is uniformly applied to again above graphene film；Graphene will be contained
Composite heat conduction film cut.The use of glue in the prior art, improves the thermal resistance value of Heat Conduction Material, reduces its heat and passes
Lead effect.
Invention content
In order to overcome problems of the prior art, the present invention to provide a kind of metal olefinic carbon heat conducting film, glue is not contained
Ingredient, given full play to the heat conduction advantage of graphene, and use metal material as matrix, the heat conduction for having expanded graphene is answered
With.
The specific technical solution of the present invention is：
A kind of metal olefinic carbon heat conducting film is combined by least one layer of graphene film and at least one layer of metal film, metal film
It is deposited on graphene film, and the thickness of graphene film and metal film ratio is 2-9: 1；The preparation method of metal olefinic carbon heat conducting film
Include the following steps：Watersoluble plumbago alkene dispersion liquid is sprayed on copper foil, it is 2-3 hours dry at 80-100 DEG C, it is adopted after dry
It is compacted with full-automatic tablet press machine, pressure 13-20MPa, using full-automatic fitting seperator stripping after compacting, obtains graphite
Alkene film；Metal vacuum ion film plating, vacuum degree -10 are carried out using sputtering type evaporated device on graphene film-6Pa, after plated film
At 450-500 DEG C, in inert gas shielding atmosphere, to metal film sprays insulating material；
The preparation method of watersoluble plumbago alkene dispersion liquid includes the following steps：Under condition of ice bath, 1-3g graphite is added to
In the concentrated sulfuric acid of 50mL and the mixed acid of concentrated nitric acid, 20-30min is stirred strongly；Further 8-10g potassium permanganate is added to
It states in mixed liquor, stirs 20-30min strongly；Above-mentioned mixed liquor is transferred in 35-40 DEG C of water-bath, 20-30g is slowly added to
Sodium nitrate stirs 20-30min；Under agitation, 100mL deionized waters are added continuously in above-mentioned mixed liquor, are then mixed
It closes liquid to be transferred in the oil bath of 70-90 DEG C of temperature, stirs 20-30min；10mL hydrogen peroxide is added dropwise again, the reaction was continued 20-
30min；Under agitation, at least one of PVP, PVA, PEG, dissolving are added in the graphene oxide solution of previous step
The hydrazine hydrate solution of 10-12mL is added dropwise afterwards, reacts 1h at a temperature of 40-60 DEG C；10-12mL further is added dropwise in above-mentioned solution
At least one of acetic acid or hydroiodic acid, the reaction was continued 20-60min；
The volume ratio of the concentrated sulfuric acid and concentrated nitric acid is 1: 1-2 in mixed acid；The concentration of aqueous solution of acetic acid and hydroiodic acid is 5-
20wt%；The concentration of aqueous solution of PVP, PVA, PEG are 5-20wt%.
The metal film is copper film, aluminium film or titanium film.
The insulating materials is high molecular material, and molecular weight is 1,000,000-140 ten thousand.
The insulating materials is polyethylene or polypropylene.
The present invention also provides the methods for preparing above-mentioned metal olefinic carbon heat conducting film, include the following steps：
1) preparation of watersoluble plumbago alkene dispersion liquid：Under condition of ice bath, by 1-3g graphite be added to 50mL the concentrated sulfuric acid and
In the mixed acid of concentrated nitric acid, 20-30min is stirred strongly；Further 8-10g potassium permanganate is added in above-mentioned mixed liquor, by force
Strong stirring 20-30min；Above-mentioned mixed liquor is transferred in 35-40 DEG C of water-bath, 20-30g sodium nitrate is slowly added to, stirs 20-
30min；Under agitation, 100mL deionized waters are added continuously in above-mentioned mixed liquor, then mixed liquor is transferred to 70-
In the oil bath of 90 DEG C of temperature, 20-30min is stirred；10mL hydrogen peroxide is added dropwise again, the reaction was continued 20-30min；In stirring bar
Under part, at least one of PVP, PVA, PEG are added in the graphene oxide solution of previous step, 10-12mL is added dropwise after dissolving
Hydrazine hydrate solution, react 1h at a temperature of 40-60 DEG C；10-12mL acetic acid or hydroiodic acid are further added dropwise in above-mentioned solution
At least one, the reaction was continued 20-60min；
2) preparation of metal olefinic carbon heat conducting film：Watersoluble plumbago alkene dispersion liquid is sprayed on copper foil, is done at 80-100 DEG C
It is 2-3 hours dry, it is compacted using full-automatic tablet press machine after dry, pressure 13-20MPa, using full-automatic fitting after compacting
Seperator is removed, and graphene film is obtained；Metal vacuum ion film plating is carried out using sputtering type evaporated device on graphene film, very
Reciprocal of duty cycle -10-6Pa, after plated film at 450-500 DEG C, in inert gas shielding atmosphere, to metal film sprays insulating material.
The volume ratio of the concentrated sulfuric acid and concentrated nitric acid is 1: 1-2 in mixed acid in step 1).
The concentration of aqueous solution of acetic acid and hydroiodic acid is 5-20wt% in step 1).
The concentration of aqueous solution of PVP, PVA, PEG are 5-20wt% in step 1).
Metal film of the present invention deposits on graphene film, and metal film and graphene film combine not by the effect of glue, avoid
The generation of thermal resistance improves thermal coefficient, and conventional metals graphene heat conduction film thicknesses is 0.1-0.2mm, and the coefficient of heat conduction is
100-300W/ (mK), metallic graphite carbon alkene heat conduction film thickness prepared by the present invention are 0.015-0.5mm, and the coefficient of heat conduction is
600-1800W/(m·K).The coefficient of heat conduction that product can be improved through the invention can prepare multi-thickness, different heat pass
The product for leading coefficient can be applied to the consumer electronics products such as mobile phone products, tablet computer, TV.
Specific implementation mode
The concrete technology and parameter of the present invention is as follows：
1) graphene film is formed：
Step is：Unreel (1-3m/ points of speed) → spraying → drying → calendering (80-100 DEG C) → stripping (15-
20MPa130-150gf) → winding (1-3m/ points of speed).
2) vacuum ion membrane plating：
Step is：Unreel (speed 1-3m/ point) → vapor deposition (vacuum degree -- 10-6Pa) → winding (1-3m/ points of speed) → turns
Patch (1-3g/ adhesivenesses) → unreel (1-3m/ points of speed) → vapor deposition (vacuum degree -10-6Pa) → winding (1-3m/ points of speed).
3) thermal spraying：
Step is：(1-3m/ points of speed) → thermal spraying (450-500 DEG C) → winding (1-3m/ points of speed) → is unreeled to be posted
(1-3g/ adhesivenesses) → unreel (1-3m/ points of speed) → thermal spraying (450-500 DEG C) → winding (1-3m/ points of speed).
Embodiment 1：
A kind of metal olefinic carbon heat conducting film is combined by a layer graphene film and one layer of copper film, and copper film is on graphene film
Deposition, and the thickness of graphene film and copper film ratio is 3: 1.The method for preparing above-mentioned metal olefinic carbon heat conducting film, including walk as follows
Suddenly：
1) watersoluble plumbago dispersion liquid is formed：Under condition of ice bath, 3g graphite is added to the concentrated sulfuric acid and concentrated nitric acid of 50mL
Mixed acid in, stir 30min strongly；Further 10g potassium permanganate is added in above-mentioned mixed liquor, stirs 30min strongly；
Above-mentioned mixed liquor is transferred in 40 DEG C of water-bath, is slowly added to 30g sodium nitrate, stirs 30min；Under agitation, will
100mL deionized waters are added continuously in above-mentioned mixed liquor, and then mixed liquor is transferred in the oil bath of 90 DEG C of temperature, stirring
30min；10mL hydrogen peroxide is added dropwise again, the reaction was continued 30min；Under agitation, in the graphene oxide of previous step
At least one of PVP, PVA, PEG are added in solution, the hydrazine hydrate solution of 12mL is added dropwise after dissolving, is reacted at a temperature of 60 DEG C
1h；At least one of 12mL acetic acid or hydroiodic acid is further added dropwise in above-mentioned solution, the reaction was continued 60min；It is dense in mixed acid
The volume ratio of sulfuric acid and concentrated nitric acid is 1: 2；The concentration of aqueous solution of acetic acid and hydroiodic acid is 20wt%；PVP, PVA, PEG's is water-soluble
A concentration of 20wt% of liquid.
2) preparation of metal olefinic carbon heat conducting film：Watersoluble plumbago alkene dispersion liquid is sprayed on copper foil, dry 3 at 100 DEG C
Hour, it is compacted using full-automatic tablet press machine after dry, pressure 20MPa, using full-automatic fitting seperator stripping after compacting
From obtaining graphene film；Copper vacuum ion membrane plating, vacuum degree -10 are carried out using sputtering type evaporated device on graphene film- 6Pa, after plated film at 500 DEG C, in inert gas shielding atmosphere, to copper film sprays insulating material.
The copper olefinic carbon heat conduction film thickness of the present embodiment is 0.1-0.2mm, and the coefficient of heat conduction is 800-1200W/ (mK).
Embodiment 2：
A kind of metal olefinic carbon heat conducting film is combined by a layer graphene film and one layer of titanium film, and titanium film is on graphene film
Deposition, and the thickness of graphene film and titanium film ratio is 6: 1.The method for preparing above-mentioned metal olefinic carbon heat conducting film, including walk as follows
Suddenly：
1) watersoluble plumbago dispersion liquid is formed：Under condition of ice bath, 1g graphite is added to the concentrated sulfuric acid and concentrated nitric acid of 50mL
Mixed acid in, stir 20min strongly；Further 8g potassium permanganate is added in above-mentioned mixed liquor, stirs 20min strongly；
Above-mentioned mixed liquor is transferred in 35 DEG C of water-bath, is slowly added to 20g sodium nitrate, stirs 20min；Under agitation, will
100mL deionized waters are added continuously in above-mentioned mixed liquor, and then mixed liquor is transferred in the oil bath of 70 DEG C of temperature, stirring
20min；10mL hydrogen peroxide is added dropwise again, the reaction was continued 20min；Under agitation, in the graphene oxide of previous step
At least one of PVP, PVA, PEG are added in solution, the hydrazine hydrate solution of 10mL is added dropwise after dissolving, is reacted at a temperature of 40 DEG C
1h；At least one of 10mL acetic acid or hydroiodic acid is further added dropwise in above-mentioned solution, the reaction was continued 20min；It is dense in mixed acid
The volume ratio of sulfuric acid and concentrated nitric acid is 1: 1；The concentration of aqueous solution of acetic acid and hydroiodic acid is 5wt%；The aqueous solution of PVP, PVA, PEG
A concentration of 5wt%.
2) preparation of metal olefinic carbon heat conducting film：Watersoluble plumbago alkene dispersion liquid is sprayed on copper foil, dry 2 is small at 80 DEG C
When, it is compacted using full-automatic tablet press machine after dry, pressure 13MPa, is removed using full-automatic fitting seperator after compacting,
Obtain graphene film；Titanium vacuum ion membrane plating, vacuum degree -10 are carried out using sputtering type evaporated device on graphene film-6Pa, plating
After film at 450 DEG C, in inert gas shielding atmosphere, to titanium film sprays insulating material.
The titanium olefinic carbon heat conduction film thickness of the present embodiment is 0.015-0.1mm, and the coefficient of heat conduction is 1200-1800W/ (m
K)。
Embodiment 3：
A kind of metal olefinic carbon heat conducting film is formed by a layer graphene film and one layer are aluminum film compounded, and aluminium film is on graphene film
Deposition, and graphene film and the thickness of aluminium film ratio are 5: 1.The method for preparing above-mentioned metal olefinic carbon heat conducting film, including walk as follows
Suddenly：
1) watersoluble plumbago dispersion liquid is formed：Under condition of ice bath, 2g graphite is added to the concentrated sulfuric acid and concentrated nitric acid of 50mL
Mixed acid in, stir 20min strongly；Further 9g potassium permanganate is added in above-mentioned mixed liquor, stirs 20min strongly；
Above-mentioned mixed liquor is transferred in 40 DEG C of water-bath, is slowly added to 30g sodium nitrate, stirs 30min；Under agitation, will
100mL deionized waters are added continuously in above-mentioned mixed liquor, and then mixed liquor is transferred in the oil bath of 80 DEG C of temperature, stirring
20min；10mL hydrogen peroxide is added dropwise again, the reaction was continued 20min；Under agitation, in the graphene oxide of previous step
At least one of PVP, PVA, PEG are added in solution, the hydrazine hydrate solution of 10mL is added dropwise after dissolving, is reacted at a temperature of 60 DEG C
1h；At least one of 12mL acetic acid or hydroiodic acid is further added dropwise in above-mentioned solution, the reaction was continued 20min；It is dense in mixed acid
The volume ratio of sulfuric acid and concentrated nitric acid is 1: 1；The concentration of aqueous solution of acetic acid and hydroiodic acid is 10wt%；PVP, PVA, PEG's is water-soluble
A concentration of 10wt% of liquid.
2) preparation of metal olefinic carbon heat conducting film：Watersoluble plumbago alkene dispersion liquid is sprayed on copper foil, dry 2 is small at 90 DEG C
When, it is compacted using full-automatic tablet press machine after dry, pressure 18MPa, is removed using full-automatic fitting seperator after compacting,
Obtain graphene film；Aluminium vacuum ion membrane plating, vacuum degree -10 are carried out using sputtering type evaporated device on graphene film-6Pa, plating
After film at 480 DEG C, in inert gas shielding atmosphere, to aluminium film sprays insulating material.
The metal olefinic carbon heat conduction film thickness of the present embodiment is 0.05-0.015mm, and the coefficient of heat conduction is 600-800W/ (m
K)。
Embodiment 4：
A kind of metal olefinic carbon heat conducting film is combined by a layer graphene film and two layers of copper film, and copper film is on graphene film
Deposition, and the thickness ratio of a layer graphene film and two layers of copper film is 2: 1.The method for preparing above-mentioned metal olefinic carbon heat conducting film, packet
Include following steps：
1) watersoluble plumbago dispersion liquid is formed：Under condition of ice bath, 2g graphite is added to the concentrated sulfuric acid and concentrated nitric acid of 50mL
Mixed acid in, stir 20min strongly；Further 8g potassium permanganate is added in above-mentioned mixed liquor, stirs 20min strongly；
Above-mentioned mixed liquor is transferred in 35 DEG C of water-bath, is slowly added to 20g sodium nitrate, stirs 20min；Under agitation, will
100mL deionized waters are added continuously in above-mentioned mixed liquor, and then mixed liquor is transferred in the oil bath of 70 DEG C of temperature, stirring
30min；10mL hydrogen peroxide is added dropwise again, the reaction was continued 30min；Under agitation, in the graphene oxide of previous step
At least one of PVP, PVA, PEG are added in solution, the hydrazine hydrate solution of 12mL is added dropwise after dissolving, is reacted at a temperature of 60 DEG C
1h；At least one of 12mL acetic acid or hydroiodic acid is further added dropwise in above-mentioned solution, the reaction was continued 60min；It is dense in mixed acid
The volume ratio of sulfuric acid and concentrated nitric acid is 1: 2；The concentration of aqueous solution of acetic acid and hydroiodic acid is 20wt%；PVP, PVA, PEG's is water-soluble
A concentration of 20wt% of liquid.
2) preparation of metal olefinic carbon heat conducting film：Watersoluble plumbago alkene dispersion liquid is sprayed on copper foil, dry 3 at 100 DEG C
Hour, it is compacted using full-automatic tablet press machine after dry, pressure 20MPa, using full-automatic fitting seperator stripping after compacting
From obtaining graphene film；On graphene film using sputtering type evaporated device two surface of graphene film is carried out copper vacuum from
Sub- plated film, vacuum degree -10-6Pa, after plated film at 500 DEG C, in inert gas shielding atmosphere, to metal film spray insulation material
Material.
The metal olefinic carbon heat conduction film thickness of the present embodiment is 0.2-0.5mm, and the coefficient of heat conduction is 600-1000W/ (mK).
Claims (8)
1. a kind of metal olefinic carbon heat conducting film, it is characterised in that：It is compound by least one layer of graphene film and at least one layer of metal film and
At metal film deposits on graphene film, and the thickness of graphene film and metal film ratio is 2-9: 1；
The preparation method of metal olefinic carbon heat conducting film includes the following steps：Watersoluble plumbago alkene dispersion liquid is sprayed on copper foil, in 80-
It is 2-3 hours dry at 100 DEG C, it is compacted using full-automatic tablet press machine after dry, pressure 13-20MPa, using complete after compacting
Automatic attaching seperator is removed, and graphene film is obtained；On graphene film using sputtering type evaporated device carry out metal vacuum from
Sub- plated film, vacuum degree -10-6Pa, after plated film at 450-500 DEG C, in inert gas shielding atmosphere, to metal film spray insulation
Material；
The preparation method of watersoluble plumbago alkene dispersion liquid includes the following steps：
1. under condition of ice bath, 1-3g graphite is added in the concentrated sulfuric acid of 50mL and the mixed acid of concentrated nitric acid, stirs 20- strongly
30min；
2. 8-10g potassium permanganate is added in 1. mixed liquor that step is formed, 20-30min is stirred strongly；
3. 2. mixed liquor that step is formed is transferred in 35-40 DEG C of water-bath, it is slowly added to 20-30g sodium nitrate, stirs 20-
30min；
4. under agitation, 100mL deionized waters are added continuously in 3. mixed liquor that step is formed, then by this step
The mixed liquor of formation is transferred in the oil bath of 70-90 DEG C of temperature, stirs 20-30min；
5. 10mL hydrogen peroxide is added dropwise again, the reaction was continued 20-30min；
6. at least one of PVP, PVA, PEG under agitation, are added in 5. mixed liquor that step is formed, it is added dropwise after dissolving
The hydrazine hydrate solution of 10-12mL reacts 1h at a temperature of 40-60 DEG C；
7. at least one of 10-12mL acetic acid or hydroiodic acid is added dropwise in 6. mixed liquor that step is formed, the reaction was continued 20-
60min；
The volume ratio of the concentrated sulfuric acid and concentrated nitric acid is 1: 1-2 in mixed acid；The concentration of aqueous solution of acetic acid and hydroiodic acid is 5-20wt%；
The concentration of aqueous solution of PVP, PVA, PEG are 5-20wt%.
2. a kind of metal olefinic carbon heat conducting film as described in claim 1, it is characterised in that：The metal film be copper film, aluminium film or
Titanium film.
3. a kind of metal olefinic carbon heat conducting film as described in claim 1, it is characterised in that：The insulating materials is macromolecule material
Material, molecular weight are 1,000,000-140 ten thousand.
4. a kind of metal olefinic carbon heat conducting film as described in claim 1, it is characterised in that：The insulating materials is polyethylene or gathers
Propylene.
5. the method for preparing the metal olefinic carbon heat conducting film as described in claim 1-4 is any, which is characterized in that include the following steps：
1) preparation of watersoluble plumbago alkene dispersion liquid：
1. under condition of ice bath, 1-3g graphite is added in the concentrated sulfuric acid of 50mL and the mixed acid of concentrated nitric acid, stirs 20- strongly
30min；
2. 8-10g potassium permanganate is added in 1. mixed liquor that step is formed, 20-30min is stirred strongly；
3. 2. mixed liquor that step is formed is transferred in 35-40 DEG C of water-bath, it is slowly added to 20-30g sodium nitrate, stirs 20-
30min；
4. under agitation, 100mL deionized waters are added continuously in 3. mixed liquor that step is formed, then by this step
The mixed liquor of formation is transferred in the oil bath of 70-90 DEG C of temperature, stirs 20-30min；
5. 10mL hydrogen peroxide is added dropwise again, the reaction was continued 20-30min；
6. at least one of PVP, PVA, PEG under agitation, are added in 5. mixed liquor that step is formed, it is added dropwise after dissolving
The hydrazine hydrate solution of 10-12mL reacts 1h at a temperature of 40-60 DEG C；
7. at least one of 10-12mL acetic acid or hydroiodic acid is added dropwise in 6. mixed liquor that step is formed, the reaction was continued 20-
60min；
2) preparation of metal olefinic carbon heat conducting film：Watersoluble plumbago alkene dispersion liquid is sprayed on copper foil, dry 2 at 80~100 DEG C
It~3 hours, is compacted using full-automatic tablet press machine after dry, pressure 13-20MPa, using full-automatic fitting point after compacting
It disembarks stripping, obtains graphene film；Metal vacuum ion film plating, vacuum are carried out using sputtering type evaporated device on graphene film
Degree -10-6Pa, after plated film at 450-500 DEG C, in inert gas shielding atmosphere, to metal film sprays insulating material.
6. method as claimed in claim 5, it is characterised in that：In step 1) in mixed acid the concentrated sulfuric acid and concentrated nitric acid volume ratio
It is 1: 1-2.
7. method as claimed in claim 5, it is characterised in that：The concentration of aqueous solution of acetic acid and hydroiodic acid is 5- in step 1)
20wt%.
8. method as claimed in claim 5, it is characterised in that：The concentration of aqueous solution of PVP, PVA, PEG are 5- in step 1)
20wt%.
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| CN107876343A (en) * | 2017-12-17 | 2018-04-06 | 张龙远 | A kind of automatic material spray rolling equipment of graphene heat conducting film and material spray calendering technology |
| CN108067375A (en) * | 2017-12-17 | 2018-05-25 | 张龙远 | A kind of automatic material spray equipment of graphene and material spray technique |
| CN109764321B (en) * | 2019-03-08 | 2020-06-26 | 南京理工大学 | Cooling structure of LED illuminating lamp and preparation method thereof |
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| CN104070715A (en) * | 2014-06-10 | 2014-10-01 | 广州市尤特新材料有限公司 | Graphene heat conduction and soaking film |
| EP3157867B1 (en) * | 2014-06-20 | 2022-02-16 | The Regents of the University of California | Method for the fabrication and transfer of graphene |
| CN204031708U (en) * | 2014-07-17 | 2014-12-17 | 苏州滕艺科技有限公司 | A kind of heat conduction and heat radiation and electromagnetic wave eliminator |
| CN204466141U (en) * | 2015-04-09 | 2015-07-08 | 新纶科技（常州）有限公司 | A kind of Graphene composite radiating film |
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