CN107031144B - A kind of high efficiency and heat radiation metal foil and the preparation method and application thereof - Google Patents
A kind of high efficiency and heat radiation metal foil and the preparation method and application thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/12—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
- B32B2037/243—Coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/24—Organic non-macromolecular coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/302—Conductive
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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
- C08K3/02—Elements
- C08K3/04—Carbon
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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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
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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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
Abstract
A kind of high efficiency and heat radiation metal foil and preparation method thereof, the heat radiating metal foil is by metal foil substrate and is located at the nano-sized carbon thermal dispersant coatings with fold micro-nano structure on metal foil two sides and adhesive forms.Preparation method is：It will be in elastic substrates of the nano-sized carbon thermal dispersant coatings coated in pre-stretching; after prebake conditions solidification; elastic substrates stress release is obtained to the micro nano-coatings with pleated structure; it is subsequently transferred to metal foil substrate; and in other face adhesive coating gum; drying can be obtained the heat radiating metal foil after pasting release paper protective film.Since the radiation nano carbon coating has pleated structure, it is formed on its surface fold micrometer structure and carbon nano-structured compound of nanometer, coated surface area and nanometer micro-convex structure has been further increased, obtains excellent heat dissipation characteristics.The heat radiating metal foil combines the advantage of metallic substrates itself high heat conductance and nanometer carbon coating excellent heat dissipation property, can be widely used for various heat dissipation pad pastings, has wide commercial promise.
Description
Technical field
The present invention relates to the preparation method and application of a kind of heat radiating metal foil, in particular to a kind of high efficiency and heat radiation metal foil and
Preparation method and application.
Background technique
As electronic device is towards high-power, miniaturization, heat dissipation has become the bottleneck problem of constraint device structure,
Must when if heat cannot obtain quick release for badly damaged device, therefore heat dissipation problem has become any device design
It must consider the problems of first.
Heat radiation coating is that a kind of apply in heat source substrate is coated with the heat radiation coating for improving its infra-red radiation ability.Due to metal sheet
The infra-red radiation ability of body is weaker, when heat transmission is to metal surface, passes through and improves infra-red radiation ability or Enhanced Radiation Reduced Blast
Area is the means for effectively improving metal heat-exchange capacity.Wherein nano-carbon material, such as carbon nanotube, graphene are super with it
The performance characteristics such as high radiance, high heat conductance become the classic functional stuffing of heat radiation coating, are widely used in various infrared
Enhance heat radiation coating.Heat radiating metal foil is a kind of heat sink material that heat radiation coating is coated on to metal foil surface, combines table
The characteristics of face high radiant rate and base metal high heat conductance, obtains a large amount of in fields such as panelized electronic device, LED, lasers
Using.For example, the open one kind of Chinese invention patent 201310612796.1 applies one layer of heat radiation coating structure in metal foil substrate
At heat radiating metal foil material；One kind disclosed in Chinese invention patent 201310388292.6 is in metal copper foil two sides coating nanometer
Carbon heat radiation coating forms double-side radiation radiator structure.But existing heat radiating metal foil surface is simple planar structure, how into one
Step improves its heat-sinking capability and is restricted by various aspects factor, it appears particularly difficult.Therefore, make great efforts further increase thermal conductivity and
On the basis of radiance, by building micro-nano structure improve surface area by be effective heat radiation ability means.
Summary of the invention
The purpose of the present invention is to provide a kind of high radiant rate heat radiating metal foils and the preparation method and application thereof, existing to overcome
There is the deficiency of technology.
For achieving the above object, present invention employs following technical solutions：
A kind of high efficiency and heat radiation metal foil is dissipated by metal foil substrate and the pleated structure nano-sized carbon for being located at metal foil two sides
Hot coating and adhesive form, wherein：
Metal foil substrate can be copper, nickel, steel, stainless steel, any one in aluminium, with a thickness of 5-200 microns, nanometer
For carbon thermal dispersant coatings with a thickness of 0.5-50 microns, adhesive layer thickness is 1-50 microns, can be adhesive sticker, heat-conducting glue, pressure sensitive adhesive
In any one.
A kind of preparation method of high efficiency and heat radiation metal foil, it is characterised in that include the following steps：
（1）By nano-sized carbon heat radiation coating coated in pre-stretching elastic substrates on, can simple tension two-way can also draw
It stretches, stretch ratio 1-50%, is toasted 1-30 minutes under 50-100 degree；
（2）One layer of low Tg resin is applied in metal foil substrate at the same time, 0.5 micron -20 of thickness micro-
Rice；
（3）After the elastic substrates drawing force release in step (1), is formed on elastic substrates surface and have fold micro-nano
The nano-sized carbon heat radiation coating surface layer of structure, then by elastic substrates have fold micro-nano structure nano-sized carbon heat radiation coating surface layer with
Step（2）The face paste coated with low Tg resin of middle preparation is closed, and is toasted 10-60 minutes under 60-150 degree, cooling
Elastic substrates are removed from the nano-sized carbon heat radiation coating surface layer with fold micro-nano structure afterwards；
（4）In the other face adhesive coating of metal foil substrate, gluing oxidant layer is formed, in gluing oxidant layer after drying
Surface pastes release paper protective film and obtains heat radiating metal foil.
Further, step（1）Described in nano-sized carbon heat radiation coating be containing carbon nanotube, graphene, carbon nano-fiber
Any one or two kinds and two or more combined infra-red radiations enhance heat radiation coating, wherein nanometer carbon content 2-15%, preferably
For water-based cooling coating；
Further, step（1）Described in elastic substrates can be thermoplastic elastomer (TPE), preferably natural rubber, silicon rubber
Glue, elastic polyurethane, further preferably one of thermoplastic elastic polyurethane, organic silicon rubber；
Further, step（2）Described in low Tg resin be selected from glass transition temperature and be lower than -20 DEG C of resin,
Including polyurethane resin, acrylic resin, ethylene-vinyl acetate copolymer, polypropylene, polyethylene, natural rubber, polyacrylic acid
Ethyl ester, polyformaldehyde, any one or two kinds and two or more combinations in polycaprolactone.
A kind of application of high efficiency and heat radiation metal foil, it is characterised in that：It can be placed directly against and need to improve the various of heat-sinking capability
The position that surface, the especially electronic devices such as raising mobile phone, tablet computer, battery case need to enhance heat dissipation, can be obviously improved
Thermal radiation capability.
Compared with prior art, advantages of the present invention includes：
（1）The fold micro nano structure of heat radiating metal foil surface building can effectively improve coating heat dissipation area, improve heat
Exchange capacity；
（2）Method by being simply pre-stretched coating, using stress release after-contraction, thermal dispersant coatings, which are prepared into, to be had
The controllable micro-nano structure of pleated structure, method simplicity are easy to scale amplification；
（3）Using low Tg resin as transition zone, while the bonding as thermal dispersant coatings and metal foil substrate
Agent is shunk using the rheology of low Tg resin in Glass Transition by thermal dispersant coatings by simple heat baking
Metallic substrates are transferred to, are fitted closely, it is simple and efficient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of heat radiating metal foil of the present invention
Wherein：1, the thermal dispersant coatings of pleated structure, 2, low Tg resin layer, 3, metal foil, 4, adhesive
Layer.
Specific embodiment
Embodiment 1
Using elastic polyurethane film as substrate, by its unidirectional pre-stretching 20%, one layer of content of carbon nanotubes 8% is applied on its surface
Aqueous carbon nanotube heat radiation coating, 10 microns of thickness, 100 degree toast 20 minutes；At the same time, in 30 micron copper foil of thickness
One side apply 5 microns of a layer thickness of flexible polyurethane resin layer；By prepared above coated with nano-sized carbon thermal dispersant coatings
The release of elastic substrates drawing force, forms the nano-sized carbon thermal dispersant coatings for having fold micro-nano structure on elastic substrates surface, will be elastic
Nano-sized carbon heat radiation coating surface layer in substrate with fold micro-nano structure is bonded with the copper foil coated with elastomeric polyurethane layer,
Baking 10 minutes under 110 degree, can be by elastic substrates from the nano-sized carbon heat radiation coating surface layer with fold micro-nano structure after cooling
Upper removing.Then in the other face adhesive coating of copper foil, release paper protective film is pasted in adhesive layer side after drying
And obtain heat radiating metal foil.Use IR-2 two waveband emissivity tester test carbon nano pipe array infrared emittance for 0.935,
Using resistance to LFA467 laser conductometer test heat dissipation film thermal conductivity of speeding, horizontal 370 W/mK of thermal conductivity, vertical thermal conductivity 45
W/m·K.Heat dissipation copper foil heat dissipation performance simulation is tested using homemade temperature difference simulator, by heat dissipation copper foil and blank copper foil point
It is not attached to ceramic heating on piece, heats up after series connection, tests the temperature difference of two copper foils, surveys the radiating copper at 70 degree of blank copper foil
Foil temperature is lower, and 15 degree of the temperature difference, the thermal dispersant coatings of pleated structure are obviously improved copper foil heat dissipation performance.
Embodiment 2
Using organic silicon rubber film as substrate, by its unidirectional pre-stretching 30%, one layer of content of carbon nanotubes is applied on its surface
12% aqueous carbon nanotube heat radiation coating, toasts 20 minutes at 100 degree by 10 microns of thickness；At the same time, at 30 microns of thickness
The one side of stainless steel foil applies 5 microns of a layer thickness of flexible polyurethane resin layer；It is dissipated prepared above coated with nano-sized carbon
The elastic substrates drawing force of hot coating discharges, and the nano-sized carbon heat-radiation coating for having fold micro-nano structure is formed on elastic substrates surface
Layer, by elastic substrates have fold micro-nano structure nano-sized carbon heat radiation coating surface layer be coated with elastomeric polyurethane layer it is stainless
Steel foil fitting, is toasted 10 minutes under 110 degree, can dissipate elastic substrates from the nano-sized carbon with fold micro-nano structure after cooling
It is removed on hot paint topcoat.Then in the other face adhesive coating of stainless steel foil, pasted after drying in adhesive layer side
It covers release paper protective film and obtains heat radiating metal foil.It is infrared using IR-2 two waveband emissivity tester test carbon nano pipe array
Radiance is 0.95, using it is resistance to speed LFA467 laser conductometer test heat dissipation film thermal conductivity, horizontal 42 W/mK of thermal conductivity,
8.7 W/mK of vertical thermal conductivity.Heat dissipation stainless steel foil heat dissipation performance simulation is tested using homemade temperature difference simulator, will be dissipated
Hot stainless steel foil and blank stainless steel foil are attached to ceramic heating on piece respectively, heat up after series connection, test the temperature of two stainless steel foils
Difference is surveyed at 70 degree of blank stainless steel foil, and heat dissipation stainless steel foil temperature is lower, and 16 degree of the temperature difference, the thermal dispersant coatings of pleated structure
It is obviously improved stainless steel foil heat dissipation performance.
Embodiment 3
Using natural rubber film as substrate, by its unidirectional pre-stretching 50%, one layer of content of carbon nanotubes 15% is applied on its surface
Aqueous carbon nanotube heat radiation coating, 10 microns of thickness, 100 degree toast 20 minutes；At the same time, in 30 microns of nickel foils of thickness
One side apply 5 microns of a layer thickness of flexible polyurethane resin layer；By prepared above coated with nano-sized carbon thermal dispersant coatings
The release of elastic substrates drawing force, forms the nano-sized carbon thermal dispersant coatings for having fold micro-nano structure on elastic substrates surface, will be elastic
Nano-sized carbon heat radiation coating surface layer in substrate with fold micro-nano structure is bonded with the nickel foil coated with elastomeric polyurethane layer,
Baking 10 minutes under 110 degree, can remove elastic substrates after cooling.Then in the other face adhesive coating of nickel foil, dry
Release paper protective film is pasted in adhesive layer side after dry and obtains heat radiating metal foil.It is tested using IR-2 two waveband emissivity
It is 0.95 that instrument, which tests carbon nano pipe array infrared emittance, tests heat dissipation film thermal conductivity using resistance to LFA467 laser conductometer of speeding,
Its horizontal 54 W/mK of thermal conductivity, vertical 14.8 W/mK of thermal conductivity.Heat dissipation nickel is tested using homemade temperature difference simulator
Heat dissipation nickel foil and blank nickel foil are attached to ceramic heating on piece respectively, heat up after series connection, test two nickel by the simulation of foil heat dissipation performance
The temperature difference of foil is surveyed at 70 degree of blank nickel foil, and heat dissipation nickel foil temperature is lower, and 16 degree of the temperature difference, the thermal dispersant coatings of pleated structure are bright
It is aobvious to improve nickel foil heat dissipation performance.
Embodiment 4
Using elastic polyurethane film as substrate, by its two-way pre-stretching 10%, one layer of content of carbon nanotubes is applied on its surface
10% aqueous carbon nanotube heat radiation coating, toasts 20 minutes at 100 degree by 10 microns of thickness；At the same time, at 30 microns of thickness
The one side of aluminium foil applies 5 microns of a layer thickness of flexible polyurethane resin layer；Prepared above is coated with nano-sized carbon heat-radiation coating
The elastic substrates drawing force release of layer, forms the nano-sized carbon thermal dispersant coatings for having fold micro-nano structure on elastic substrates surface, will
Nano-sized carbon heat radiation coating surface layer in elastic substrates with fold micro-nano structure is bonded with the aluminium foil coated with elastomeric polyurethane layer,
It toasts 10 minutes under 110 degree, elastic substrates can be removed after cooling.Then in the other face adhesive coating of aluminium foil,
Release paper protective film is pasted in adhesive layer side after drying and obtains heat radiating metal foil.It is surveyed using IR-2 two waveband emissivity
Trying instrument test carbon nano pipe array infrared emittance is 0.935, using resistance to LFA467 laser conductometer test heat dissipation film thermal conductivity of speeding
Rate, horizontal 230 W/mK of thermal conductivity, vertical 35 W/mK of thermal conductivity.It is tested and is radiated using homemade temperature difference simulator
The simulation of aluminium foil heat dissipation performance, is attached to ceramic heating on piece for heat radiation aluminum foil and blank aluminium foil respectively, heats up after series connection, tests two
The temperature difference of aluminium foil is surveyed at 70 degree of blank aluminium foil, and heat radiation aluminum foil temperature is lower, and 12 degree of the temperature difference, the thermal dispersant coatings of pleated structure
It is obviously improved aluminium foil heat dissipation performance.
Embodiment 5
Using elastic polyurethane film as substrate, by its two-way pre-stretching 20%, one layer of content of carbon nanotubes 5% is applied on its surface
Aqueous carbon nanotube heat radiation coating, 10 microns of thickness, 100 degree toast 20 minutes；At the same time, at thickness 30 microns No. 45
The one side of carbon steel foil applies 5 microns of a layer thickness of ethylene-vinyl acetate copolymer layer；Prepared above is coated with nano-sized carbon
The elastic substrates drawing force of thermal dispersant coatings discharges, and the nano-sized carbon heat-radiation coating for having fold micro-nano structure is formed on elastic substrates surface
The nano-sized carbon heat radiation coating surface layer that fold micro-nano structure is had in elastic substrates is copolymerized by layer with coated with ethene-vinyl acetate
No. 45 carbon steel foils of nitride layer are bonded, and are toasted 10 minutes under 110 degree, can remove elastic substrates after cooling.Then at No. 45
The other face adhesive coating of carbon steel foil pastes release paper protective film in adhesive layer side after drying and obtains heat dissipation gold
Belong to foil.It uses IR-2 two waveband emissivity tester test carbon nano pipe array infrared emittance for 0.925, is speeded using resistance to
LFA467 laser conductometer tests heat dissipation film thermal conductivity, horizontal 43 W/mK of thermal conductivity, vertical thermal conductivity 15.6W/mK.
Using No. 45 carbon steel foil heat dissipation performances simulations of homemade temperature difference simulator test heat dissipation, will radiate No. 45 carbon steel foils and blank 45
Number carbon steel foil is attached to ceramic heating on piece respectively, heats up after series connection, tests the temperature difference of two No. 45 carbon steel foils, surveys in blank 45
At numbers 70 degree of carbon steel foil, radiating, No. 45 carbon steel foil temperature are lower, and 10 degree of the temperature difference, the thermal dispersant coatings of pleated structure are obviously improved No. 45
Carbon steel foil heat dissipation performance.
It is described above, and in the embodiment shown on drawing, the design philosophy surely of the invention that is limited can not be parsed.In this hair
Change can be improved for technical thought of the invention in the form of multiplicity by holding identical skill in bright technical field, in this way
Improvement and in change is interpreted as belonging to the scope of protection of the present invention.
Claims (4)
1. a kind of preparation method of high efficiency and heat radiation metal foil, it is characterised in that：The high efficiency and heat radiation metal foil is by metal foil substrate
It is formed with the pleated structure nano-sized carbon thermal dispersant coatings and adhesive for being located at metal foil two sides, wherein：Metal foil substrate be copper,
Nickel, steel, any one in aluminium, with a thickness of 5-200 microns, nano-sized carbon thermal dispersant coatings are with a thickness of 0.5-50 microns, adhesive
Layer is adhesive sticker, heat-conducting glue, any one in pressure sensitive adhesive, the preparation method of high efficiency and heat radiation metal foil with a thickness of 1-50 microns
Include the following steps：（1）Nano-sized carbon heat radiation coating is coated in the elastic substrates of pre-stretching, simple tension or biaxial tension,
Stretch ratio 1-50% is toasted 1-30 minutes under 50-100 degrees Celsius；（2）One layer is applied in metal foil substrate at the same time
Low Tg resin, 0.5 micron -20 microns of thickness；After the elastic substrates drawing force release in step (1), in elasticity
Substrate surface forms the nano-sized carbon heat radiation coating surface layer for having fold micro-nano structure, then fold micro-nano knot will be had in elastic substrates
The nano-sized carbon heat radiation coating surface layer and step of structure（2）The face paste coated with low Tg resin of middle preparation is closed, in 60-
It is toasted 10-60 minutes under 150 degrees Celsius, by elastic substrates from the nano-sized carbon heat-radiation coating charge level with fold micro-nano structure after cooling
Layer removing；In the other face adhesive coating of metal foil substrate, gluing oxidant layer is formed, is pasted after drying in adhesive layer side
It covers release paper protective film and obtains heat radiating metal foil.
2. a kind of preparation method of high efficiency and heat radiation metal foil as described in claim 1, it is characterised in that：The step（1）Middle institute
Stating nano-sized carbon heat radiation coating is the red of any one or two or more combinations containing carbon nanotube, graphene, carbon nano-fiber
External radiation enhances heat radiation coating, and wherein nano-sized carbon mass content is 2-15%, and nano-sized carbon heat radiation coating is water-based cooling coating.
3. a kind of preparation method of high efficiency and heat radiation metal foil as described in claim 1, it is characterised in that：The step（1）Middle institute
Stating elastic substrates is natural rubber, silicon rubber or elastic polyurethane.
4. a kind of preparation method of high efficiency and heat radiation metal foil as described in claim 1, it is characterised in that：The step（2）Middle institute
It states low Tg resin and is selected from the resin that glass transition temperature is lower than -20 DEG C, including polyurethane resin, acrylic resin, second
It is alkene-acetate ethylene copolymer, polypropylene, polyethylene, natural rubber, polyethyl acrylate, polyformaldehyde, any in polycaprolactone
A combination of one or more.
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| CN201710258404.4A CN107031144B (en) | 2017-04-19 | 2017-04-19 | A kind of high efficiency and heat radiation metal foil and the preparation method and application thereof |
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| CN107660108A (en) * | 2017-10-25 | 2018-02-02 | 广东欧珀移动通信有限公司 | The metal foil method for sticking and covering of metal foil members and mobile terminal |
| CN110062567B (en) * | 2019-05-14 | 2023-12-15 | 士彩材料科技（苏州）有限公司 | Heat conduction and heat dissipation structure with high heat conduction efficiency |
| CN110565176B (en) * | 2019-06-04 | 2021-06-15 | 中国科学院苏州纳米技术与纳米仿生研究所 | Temperature-adjustable fabric based on carbon nano tube and preparation method thereof |
| CN110441945A (en) * | 2019-08-01 | 2019-11-12 | 深圳市华星光电技术有限公司 | Method, pleated structure and the display panel of pleated structure are prepared in display panel |
| CN110835418B (en) * | 2019-11-14 | 2022-04-22 | 哈尔滨工业大学 | Construction method of flexible two-dimensional fold structure on surface of elastic base material |
| CN114683632A (en) * | 2020-12-28 | 2022-07-01 | 宁波材料所杭州湾研究院 | Metal-based thermal interface material with fold structure and preparation method thereof |
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| CN203675528U (en) * | 2014-01-16 | 2014-06-25 | 中国科学院青岛生物能源与过程研究所 | Graphite film heat conduction radiating fin with wrinkle structure |
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| CN104810336A (en) * | 2015-05-11 | 2015-07-29 | 苏州捷迪纳米科技有限公司 | Carbon nano tube composite graphite film for heat dissipation |
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| CN106531706A (en) * | 2016-08-17 | 2017-03-22 | 常州国成新材料科技有限公司 | 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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