CN107031144A - A kind of high efficiency and heat radiation metal foil and preparation method and application - Google Patents
A kind of high efficiency and heat radiation metal foil and preparation method and application Download PDFInfo
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- CN107031144A CN107031144A CN201710258404.4A CN201710258404A CN107031144A CN 107031144 A CN107031144 A CN 107031144A CN 201710258404 A CN201710258404 A CN 201710258404A CN 107031144 A CN107031144 A CN 107031144A
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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
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Abstract
A kind of high efficiency and heat radiation metal foil and preparation method thereof, the heat radiating metal paper tinsel is constituted positioned at nano-sized carbon thermal dispersant coatings of the metal foil two sides with fold micro-nano structure and adhesive by metal foil substrate and respectively.Its preparation method is：Nano-sized carbon thermal dispersant coatings are coated in the elastic substrates of pre-stretching; after prebake conditions solidification; elastic substrates stress release is obtained into the micro nano-coatings with pleated structure; it is subsequently transferred to metal foil substrate; and in other face adhesive coating gum; the heat radiating metal paper tinsel can be obtained after drying, patch release liners diaphragm.Because the radiation nano carbon coating has pleated structure, fold micrometer structure and nanometer carbon nano-structured compound, further raising coated surface area and nanometer micro-convex structure are formd on its surface, excellent heat dissipation characteristics are obtained.The heat radiating metal paper tinsel combines the advantage of metallic substrates itself high heat conductance and nanometer carbon coating excellent heat dissipation property, various radiating pad pastings is can be widely used for, with wide commercial promise.
Description
Technical field
The present invention relates to a kind of preparation method of heat radiating metal paper tinsel and application, more particularly to a kind of high efficiency and heat radiation metal foil and
Its preparation method and application.
Background technology
As electronic device is towards high-power, miniaturization, radiating has become the bottleneck problem of constraint device structure,
If must when heat can not obtain quick release by badly damaged device, therefore heat dissipation problem has become any device design
The problem of must considering first.
Heat radiation coating is that a kind of applied in thermal 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, by improving 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 CNT, graphene, super with it
The performance characteristics such as high radiance, high heat conductance, as the classic functional stuffing of heat radiation coating, are widely used in various infrared
Strengthen heat radiation coating.Heat radiating metal paper tinsel is a kind of heat sink material that heat radiation coating is coated on to metal foil surface, and it combines table
The characteristics of face high radiant rate and base metal high heat conductance, obtain 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
Into 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 paper tinsel surface is simple planar structure, how to enter one
Step improves its heat-sinking capability and restricted by each side factor, it appears particularly difficult.Therefore, make great efforts further improve thermal conductivity and
On the basis of radiance, by build micro-nano structure improve surface area by be effective heat radiation ability means.
The content of the invention
It is existing to overcome it is an object of the invention to provide a kind of high radiant rate heat radiating metal paper tinsel and preparation method and application
There is the deficiency of technology.
For achieving the above object, present invention employs following technical scheme：
A kind of high efficiency and heat radiation metal foil, by metal foil substrate and respectively positioned at the pleated structure nano-sized carbon heat-radiation coating on metal foil two sides
Layer is constituted with adhesive, wherein：
Metal foil substrate can be any one in copper, nickel, steel, stainless steel, aluminium, and thickness is 5-200 microns, and nano-sized carbon dissipates
Hot coating thickness is 0.5-50 micron, and adhesive layer thickness is 1-50 microns, in being adhesive sticker, heat-conducting glue, pressure sensitive adhesive
Any one.
A kind of preparation method of high efficiency and heat radiation metal foil, it is characterised in that comprise the following steps：
（1）Nano-sized carbon heat radiation coating is coated in the elastic substrates of pre-stretching, can simple tension can also biaxial tension, draw
Ratio 1-50% is stretched, is toasted 1-30 minutes under 50-100 degree；
（2）At the same time one layer of low Tg resin, 0.5 micron -20 microns of thickness are applied in metal foil substrate；
（3）After the elastic substrates tensile force release in step (1), formed on elastic substrates surface and carry fold micro-nano structure
Nano-sized carbon heat radiation coating surface layer, then will in elastic substrates with fold micro-nano structure nano-sized carbon heat radiation coating surface layer and step
（2）The face for the being coated with low Tg resin laminating of middle preparation, is toasted 10-60 minutes under 60-150 degree, will after cooling
Elastic substrates are peeled off from the nano-sized carbon heat radiation coating surface layer with fold micro-nano structure；
（4）In the other face adhesive coating of metal foil substrate, gluing oxidant layer is formed, in adhesive layer side after drying
Paste release liners diaphragm and obtain heat radiating metal paper tinsel.
Further, step（1）Described in nano-sized carbon heat radiation coating be containing CNT, graphene, carbon nano-fiber
Any one or two kinds and two or more combinations infra-red radiation enhancing 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, bullet
Property polyurethane, more preferably one kind in thermoplastic elastic polyurethane, organic silicon rubber；
Further, step（2）Described in low Tg resin be selected from glass transition temperature and be less than -20 DEG C of resin, including
Polyurethane resin, acrylic resin, ethylene-vinyl acetate copolymer, polypropylene, polyethylene, natural rubber, polyacrylic acid second
Any one in ester, polyformaldehyde, polycaprolactone or two kinds and two or more combinations.
A kind of application of high efficiency and heat radiation metal foil, it is characterised in that：Can be placed directly against needs to improve the various of heat-sinking capability
Surface, especially improving the electronic devices such as mobile phone, tablet personal computer, battery case needs to strengthen the position of radiating, 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 paper tinsel surface construction can effectively improve coating area of dissipation, improve heat exchange
Ability；
（2）Method by being simply pre-stretched coating, using stress release after-contraction, thermal dispersant coatings are prepared into fold
The micro-nano structure of structure-controllable, method simplicity is easy to scale amplification；
（3）Using low Tg resin as transition zone, while as thermal dispersant coatings and the adhesive of metal foil substrate, leading to
Simple heat baking is crossed, is shunk using the rheology of low Tg resin in Glass Transition and is transferred to thermal dispersant coatings
Metallic substrates, are brought into close contact, simple and efficient.
Brief description of the drawings
Fig. 1 is the structural representation of heat radiating metal paper tinsel of the present invention
Wherein：1st, the thermal dispersant coatings of pleated structure, 2, low Tg resin bed, 3, metal foil, 4, gluing oxidant layer.
Embodiment
Embodiment 1
Using elastic polyurethane film as substrate, by its unidirectional pre-stretching 20%, the water of one layer of content of carbon nanotubes 8% is applied on its surface
Property CNT heat radiation coating, 10 microns of thickness, 100 degree toast 20 minutes；At the same time, the one of the micron copper foil of thickness 30
Face applies the flexible polyurethane resin layer of 5 microns of a layer thickness；By the elasticity for being coated with nano-sized carbon thermal dispersant coatings prepared above
Substrate tension power discharges, and the nano-sized carbon thermal dispersant coatings with fold micro-nano structure is formed on elastic substrates surface, by elastic substrates
The upper nano-sized carbon heat radiation coating surface layer with fold micro-nano structure is fitted with being coated with the copper foil of elastomeric polyurethane layer, at 110 degree
Lower baking 10 minutes, can shell elastic substrates after cooling from the nano-sized carbon heat radiation coating surface layer with fold micro-nano structure
From.Then in the other face adhesive coating of copper foil, paste release liners diaphragm in adhesive layer side after drying and obtain
To heat radiating metal paper tinsel.Use IR-2 two waveband emissivity tester to test carbon nano pipe array infrared emittance for 0.935, use
The resistance to LFA467 laser conductometers test heat dissipation film thermal conductivity, its horizontal W/mK of thermal conductivity 370, the vertical W/ of thermal conductivity 45 of speeding
m·K.Using the test radiating copper foil heat dispersion simulation of homemade temperature difference analogue means, radiating copper foil and blank copper foil are distinguished
It is attached on ceramic heating plate, is heated up after series connection, test the temperature difference of two copper foils, actual measurement is in 70 degree of blank copper foil, and radiate copper foil
Temperature is lower, and 15 degree of the temperature difference, the thermal dispersant coatings of pleated structure are obviously improved copper foil heat dispersion.
Embodiment 2
Using organic silicon rubber film as substrate, by its unidirectional pre-stretching 30%, in one layer of content of carbon nanotubes 12% of its surface coating
Aqueous CNT heat radiation coating, 10 microns of thickness is toasted 20 minutes at 100 degree；At the same time, in 30 microns of stainless steels of thickness
The one side of paper tinsel applies the flexible polyurethane resin layer of 5 microns of a layer thickness；Prepared above is coated with nano-sized carbon thermal dispersant coatings
Elastic substrates tensile force release, elastic substrates surface formed with fold micro-nano structure nano-sized carbon thermal dispersant coatings, by bullet
Property substrate on fold micro-nano structure nano-sized carbon heat radiation coating surface layer and be coated with elastomeric polyurethane layer stainless steel foil paste
Close, toasted 10 minutes under 110 degree, can be by elastic substrates from the nano-sized carbon heat radiation coating with fold micro-nano structure after cooling
Peeled off on surface layer.Pasted then in the other face adhesive coating of stainless steel foil, after drying in adhesive layer side release
Paper diaphragm and obtain heat radiating metal paper tinsel.Carbon nano pipe array infrared emittance is tested using IR-2 two waveband emissivity tester
For 0.95, using the resistance to LFA467 laser conductometers test heat dissipation film thermal conductivity, its horizontal W/mK of thermal conductivity 42, vertical thermal of speeding
The W/mK of conductance 8.7.Using the test radiating stainless steel foil heat dispersion simulation of homemade temperature difference analogue means, it will radiate stainless
Steel foil and blank stainless steel foil are attached on ceramic heating plate respectively, are heated up after series connection, test the temperature difference of two stainless steel foils, actual measurement
In 70 degree of blank stainless steel foil, radiating stainless steel foil temperature is lower, 16 degree of the temperature difference, and the thermal dispersant coatings of pleated structure are obviously improved
Stainless steel foil heat dispersion.
Embodiment 3
Using natural rubber film as substrate, by its unidirectional pre-stretching 50%, the water of one layer of content of carbon nanotubes 15% is applied on its surface
Property CNT heat radiation coating, 10 microns of thickness, 100 degree toast 20 minutes；At the same time, the one of 30 microns of nickel foils of thickness
Face applies the flexible polyurethane resin layer of 5 microns of a layer thickness；By the elasticity for being coated with nano-sized carbon thermal dispersant coatings prepared above
Substrate tension power discharges, and the nano-sized carbon thermal dispersant coatings with fold micro-nano structure is formed on elastic substrates surface, by elastic substrates
The upper nano-sized carbon heat radiation coating surface layer with fold micro-nano structure is fitted with being coated with the nickel foil of elastomeric polyurethane layer, at 110 degree
Lower baking 10 minutes, can peel off elastic substrates after cooling.Then in the other face adhesive coating of nickel foil, after drying
Release liners diaphragm is pasted in adhesive layer side and obtains heat radiating metal paper tinsel.Tested using IR-2 two waveband emissivity tester
Carbon nano pipe array infrared emittance is 0.95, using the resistance to LFA467 laser conductometers test heat dissipation film thermal conductivity, its level of speeding
Thermal conductivity 54 W/mK, the vertical W/mK of thermal conductivity 14.8.Using the test radiating nickel foil radiating of homemade temperature difference analogue means
Performance simulation, radiating nickel foil and blank nickel foil are attached on ceramic heating plate respectively, are heated up after series connection, test the temperature of two nickel foils
Difference, actual measurement is in 70 degree of blank nickel foil, and radiating nickel foil temperature is lower, 16 degree of the temperature difference, and the thermal dispersant coatings of pleated structure are obviously improved
Nickel foil heat dispersion.
Embodiment 4
Using elastic polyurethane film as substrate, by its two-way pre-stretching 10%, in one layer of content of carbon nanotubes 10% of its surface coating
Aqueous CNT heat radiation coating, 10 microns of thickness is toasted 20 minutes at 100 degree；At the same time, in the micron aluminum foil of thickness 30
Simultaneously apply the flexible polyurethane resin layer of 5 microns of a layer thickness；By the bullet for being coated with nano-sized carbon thermal dispersant coatings prepared above
Property the release of substrate tension power, the nano-sized carbon thermal dispersant coatings with fold micro-nano structure are formed on elastic substrates surface, by elastic base
The nano-sized carbon heat radiation coating surface layer with fold micro-nano structure is fitted with being coated with the aluminium foil of elastomeric polyurethane layer on bottom, 110
The lower baking of degree 10 minutes, can peel off elastic substrates after cooling.Then in the other face adhesive coating of aluminium foil, it is dried
Release liners diaphragm is pasted in adhesive layer side and obtain heat radiating metal paper tinsel afterwards.Surveyed using IR-2 two waveband emissivity tester
It is 0.935 to try carbon nano pipe array infrared emittance, using the resistance to LFA467 laser conductometers test heat dissipation film thermal conductivity, its water of speeding
The flat W/mK of thermal conductivity 230, the vertical W/mK of thermal conductivity 35.Using the test heat radiation aluminum foil radiating of homemade temperature difference analogue means
Performance simulation, heat radiation aluminum foil and blank aluminium foil are attached on ceramic heating plate respectively, are heated up after series connection, test the temperature of two aluminium foils
Difference, actual measurement is in 70 degree of blank aluminium foil, and heat radiation aluminum foil temperature is lower, 12 degree of the temperature difference, and the thermal dispersant coatings of pleated structure are obviously improved
Aluminium foil heat dispersion.
Embodiment 5
Using elastic polyurethane film as substrate, by its two-way pre-stretching 20%, the water of one layer of content of carbon nanotubes 5% is applied on its surface
Property CNT heat radiation coating, 10 microns of thickness, 100 degree toast 20 minutes；At the same time, in No. 45 carbon steels of thickness 30 micron
The one side of paper tinsel applies the ethylene-vinyl acetate copolymer layer of 5 microns of a layer thickness；Prepared above is coated with nano-sized carbon radiating
The elastic substrates tensile force release of coating, the nano-sized carbon thermal dispersant coatings with fold micro-nano structure are formed on elastic substrates surface,
By the nano-sized carbon heat radiation coating surface layer in elastic substrates with fold micro-nano structure with being coated with ethylene-vinyl acetate copolymer layer
No. 45 carbon steel paper tinsels laminating, under 110 degree baking 10 minutes, elastic substrates can be peeled off after cooling.Then in No. 45 carbon steels
The other face adhesive coating of paper tinsel, pastes release liners diaphragm in adhesive layer side after drying and obtains heat radiating metal
Paper tinsel.IR-2 two waveband emissivity tester is used to test carbon nano pipe array infrared emittance for 0.925, using the resistance to LFA467 that speeds
Laser conductometer tests heat dissipation film thermal conductivity, its horizontal W/mK of thermal conductivity 43, vertical thermal conductivity 15.6W/mK.Using certainly
No. 45 carbon steel paper tinsel heat dispersion simulations of temperature difference analogue means test radiating of system, will radiate No. 45 carbon steels of No. 45 carbon steel paper tinsels and blank
Paper tinsel is attached on ceramic heating plate respectively, is heated up after series connection, tests the temperature difference of two No. 45 carbon steel paper tinsels, is surveyed in No. 45 carbon steels of blank
During 70 degree of paper tinsel, No. 45 carbon steel paper tinsel temperature of radiating are lower, and 10 degree of the temperature difference, the thermal dispersant coatings of pleated structure are obviously improved No. 45 carbon steel paper tinsels
Heat dispersion.
It is described above, and in the embodiment shown on drawing, the fixed design philosophy of the invention that is limited can not be parsed.In this hair
Holding identical skill in bright technical field can be changed the technical thought of the present invention with various form improvement, so
Improvement and change be interpreted as belonging in protection scope of the present invention.
Claims (6)
1. a kind of high efficiency and heat radiation metal foil, by metal foil substrate and respectively positioned at the pleated structure nano-sized carbon radiating on metal foil two sides
Coating is constituted with adhesive, wherein：
Metal foil substrate can be any one in copper, nickel, steel, stainless steel, aluminium, and thickness is 5-200 microns, and nano-sized carbon dissipates
Hot coating thickness is 0.5-50 micron, and adhesive layer thickness is 1-50 microns, in being adhesive sticker, heat-conducting glue, pressure sensitive adhesive
Any one.
2. a kind of preparation method of high efficiency and heat radiation metal foil as claimed in claim 1, it is characterised in that comprise the following steps：
Nano-sized carbon heat radiation coating is coated in the elastic substrates of pre-stretching, can simple tension can also biaxial tension, draw ratio
Example 1-50%, is toasted 1-30 minutes under 50-100 degree；
At the same time one layer of low Tg resin, 0.5 micron -20 microns of thickness are applied in metal foil substrate；
After the elastic substrates tensile force release in step (1), receiving with fold micro-nano structure is formed on elastic substrates surface
Rice carbon heat radiation coating surface layer, then the nano-sized carbon heat radiation coating surface layer and step for fold micro-nano structure being carried in elastic substrates（2）
The face for the being coated with low Tg resin laminating of middle preparation, is toasted 10-60 minutes under 60-150 degree, by elasticity after cooling
Substrate is peeled off from the nano-sized carbon heat radiation coating surface layer with fold micro-nano structure；
In the other face adhesive coating of metal foil substrate, gluing oxidant layer is formed, is pasted after drying in adhesive layer side
Release liners diaphragm is to obtain heat radiating metal paper tinsel.
3. a kind of preparation method of high efficiency and heat radiation metal foil as claimed in claim 2, it is characterised in that：The step（1）Middle institute
It is any one or two kinds and two or more groups containing CNT, graphene, carbon nano-fiber to state nano-sized carbon heat radiation coating
The infra-red radiation enhancing heat radiation coating of conjunction, preferably wherein nanometer carbon content 2-15%, water-based cooling coating.
4. a kind of preparation method of high efficiency and heat radiation metal foil as claimed in claim 2, it is characterised in that：The step（1）Middle institute
It can be thermoplastic elastomer (TPE), preferably natural rubber, silicon rubber, elastic polyurethane, more preferably heat to state elastic substrates
One kind in Plastic resilient polyurethane, organic silicon rubber.
5. a kind of preparation method of high efficiency and heat radiation metal foil as claimed in claim 2, it is characterised in that：The step（2）Middle institute
State low Tg resin and be selected from the resin that glass transition temperature is less than -20 DEG C, including polyurethane resin, acrylic resin, second
It is any in alkene-acetate ethylene copolymer, polypropylene, polyethylene, natural rubber, polyethyl acrylate, polyformaldehyde, polycaprolactone
One or two kinds of and two or more combinations.
6. a kind of application of high efficiency and heat radiation metal foil, it is characterised in that：The various tables for needing to improve heat-sinking capability can be placed directly against
Face, especially improving the electronic devices such as mobile phone, tablet personal computer, battery case needs to strengthen the position of radiating, can be obviously improved heat
Radianting capacity.
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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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| 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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| CN107031144B CN107031144B (en) | 2018-11-27 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110062567A (en) * | 2019-05-14 | 2019-07-26 | 士彩材料科技（苏州）有限公司 | A kind of heat conduction and heat radiation structure of high-heat conductive efficency |
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| 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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| 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 |
| CN110062567A (en) * | 2019-05-14 | 2019-07-26 | 士彩材料科技（苏州）有限公司 | A kind of heat conduction and heat radiation structure of high-heat conductive efficency |
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| 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 |
| CN110835418A (en) * | 2019-11-14 | 2020-02-25 | 哈尔滨工业大学 | Construction method of flexible two-dimensional fold structure on surface of elastic base material |
| 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 |
| CN114683632B (en) * | 2020-12-28 | 2024-05-07 | 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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