CN108059929A - Heat-conducting glue band, its production method and electronic equipment - Google Patents
Heat-conducting glue band, its production method and electronic equipment Download PDFInfo
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- CN108059929A CN108059929A CN201711497608.XA CN201711497608A CN108059929A CN 108059929 A CN108059929 A CN 108059929A CN 201711497608 A CN201711497608 A CN 201711497608A CN 108059929 A CN108059929 A CN 108059929A
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- heat
- conducting glue
- metal
- glue band
- foamed cotton
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
- C09J2423/046—Presence of homo or copolymers of ethene in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2475/00—Presence of polyurethane
- C09J2475/006—Presence of polyurethane in the substrate
Abstract
The present invention provides a kind of heat-conducting glue band, its production method and electronic equipments.The heat-conducting glue band includes pressure-sensitive adhesive layer, foamed cotton layer and first coat of metal；Foamed cotton layer is arranged on a side surface of pressure-sensitive adhesive layer；First coat of metal is arranged on the surface of separate pressure-sensitive adhesive layer one side of foamed cotton layer.Pressure-sensitive adhesive layer, foamed cotton layer and first coat of metal are provided in above-mentioned heat-conducting glue band simultaneously, heat-conducting layer can be bonded in using pressure-sensitive adhesive layer on OLED screen curtain, while sets foamed cotton layer and first coat of metal that heat-conducting glue band can be made to be provided simultaneously with good cushion performance and heat conductivility.Especially, heat-conducting layer in the heat-conducting glue band is first coat of metal, coating shows that it is that foam layer surface is set directly at by way of plated film, preferable combination can be realized in the additional glue-line that can be used when not having each layer of Classical adhesive tape to bond between two layers, and this makes it possible to the heat conductivilitys for further improving heat-conducting glue band.
Description
Technical field
The present invention relates to OLED fields, in particular to a kind of heat-conducting glue band, its production method and electronic equipment.
Background technology
OLED (organic electroluminescent LED) technology has been widely used in mobile phone display field, and OLED technology at present
Infiltration in mobile phone increases year by year.
At present, because OLED screen curtain is than relatively thin, it is easy to broken, it usually needs increase foam in screen making as buffering
Protective layer.At the same time, in OLED screen screen making, generally use glass or polyimides (PI) as basal layer, but due to
The heat transfer efficiency of glass or PI are poor, generally require to increase cooling measure.The existing cooling measure for OLED screen curtain is mainly adopted
The mode of heat-conducting glue band is pasted after screen.In order to achieve the purpose that heat dissipation and buffer protection simultaneously, existing way is first
In the OLED screen heat-conducting glue band behind the scenes that bonds (one layer of pressure sensitive adhesive is provided on heat-conducting glue band in itself, OLED screen can be directly bonded to
On curtain), another layer of pressure sensitive adhesive is then recycled to bond foamed cotton layer on the surface of heat-conducting glue band as buffering, however, in heat-conducting glue
Pressure sensitive adhesive is bonded between band and foamed cotton layer can substantially reduce the heat dissipation effect of screen.
The content of the invention
It is existing to solve it is a primary object of the present invention to provide a kind of heat-conducting glue band, its production method and electronic equipment
The problem of OLED screen curtain in the technology existing heat dissipation performance when setting buffer protection layer and heat-conducting glue band is insufficient.
To achieve these goals, according to an aspect of the invention, there is provided a kind of heat-conducting glue band, including：It is pressure-sensitive
Glue-line；Foamed cotton layer is arranged on a side surface of pressure-sensitive adhesive layer；And first coat of metal, first coat of metal are arranged on bubble
On the surface of the separate pressure-sensitive adhesive layer one side of cotton layer.
Further, heat-conducting glue band further includes second coat of metal, and second coat of metal is arranged on the close pressure of foamed cotton layer
On the surface of quick glue-line one side.
Further, the material of first coat of metal and second coat of metal separately selected from metallic copper, metallic aluminium,
One or more in metallic silver and metallic gold.
Further, the thickness of first coat of metal isPreferably, the thickness of second coat of metal is
Further, heat-conducting glue band further includes release film, and release film is arranged on the one side of the separate foamed cotton layer of pressure-sensitive adhesive layer
On surface.
Further, forming the material of foamed cotton layer includes resin and foaming agent；Preferred resin is polyethylene and/or poly- ammonia
Ester；Preferably, foaming agent is the one or more in azo foaming agent, sulfohydrazide type blowing agent and nitroso group foaming agent；
It is highly preferred that by weight, forming the material of foamed cotton layer includes 1000~1500 parts of polyethylene, 200~300 parts of poly- ammonia
Ester and 0.5~5 part of foaming agent.
Further, by weight, the material for forming foamed cotton layer further includes 0.5~5 part of heat filling；Preferably,
Heat filling is the one or more in carbon black, carbon nanotubes, graphene, copper powder, aluminium powder, silver powder and bronze.
Further, the thickness of foamed cotton layer is 0.05~0.3mm；Preferably, the thickness of pressure-sensitive adhesive layer is 8~20 μm.
According to another aspect of the present invention, a kind of production method of heat-conducting glue band is additionally provided, including：Prepare foam
Layer；First coat of metal is set on a side surface of foamed cotton layer using the mode of metal evaporation, plating or sputtering；And it is steeping
Pressure-sensitive adhesive layer on the surface away from the first coat of metal one side of cotton layer is set, and then forms heat-conducting glue band.
Further, before setting pressure-sensitive adhesive layer, production method further includes：Utilize the side of metal evaporation, plating or sputtering
Formula sets second coat of metal on the surface away from the first coat of metal one side of foamed cotton layer, then remote in second coat of metal
Pressure-sensitive adhesive layer on the surface from foamed cotton layer one side is set, and then forms heat-conducting glue band；Preferably, set pressure-sensitive adhesive layer the step of it
Afterwards, production method also includes setting release film on a side surface of the pressure-sensitive adhesive layer away from foamed cotton layer and then forms heat-conducting glue band
Step.
Further, the step of forming foamed cotton layer includes：Resin and foaming agent are blended, master slice is made；And master slice is led to
It crosses gamma-rays to be irradiated, foamed cotton layer is made；Preferably, during resin and foaming agent being blended, while add in and lead
Hot filler；Preferably, the irradiation of radiation treatment process is 40~80kGy.
Further, resin includes polyethylene and polyurethane, and the step of preparing master slice includes：It is first by sub-polyethylene
Part, second part and the 3rd part, be denoted as polyethylene A, polyethylene B and polyethylene C successively；Polyethylene A and polyurethane are carried out first
Mixing process obtains foaming master batch；Polyethylene B, heat filling and foaming agent are subjected to the second mixing process, obtain auxiliary agent mother
Grain；Foaming master batch, auxiliary agent master batch and polyethylene C are blended, master slice is made.
Further, after the step of carrying out radiation treatment, production method further includes：To irradiated treated master slice
Sided corona treatment is carried out, obtains foamed cotton layer.
According to another aspect of the present invention, a kind of electronic equipment is additionally provided, including display screen and above-mentioned heat-conducting glue band,
And heat-conducting glue band is covered in the back side of display screen.
The present invention provides a kind of heat-conducting glue band, its production method and electronic equipments.The heat-conducting glue band include pressure-sensitive adhesive layer,
Foamed cotton layer and first coat of metal；Foamed cotton layer is arranged on a side surface of pressure-sensitive adhesive layer；First coat of metal is arranged on foam
On the surface of the separate pressure-sensitive adhesive layer one side of layer.
Pressure-sensitive adhesive layer, foamed cotton layer and first coat of metal are provided with simultaneously in above-mentioned heat-conducting glue band, it can using pressure-sensitive adhesive layer
Heat-conducting layer is bonded on OLED screen curtain, while set foamed cotton layer and first coat of metal that can be provided simultaneously with heat-conducting glue band
Good cushion performance and heat conductivility.Especially, the heat-conducting layer in the heat-conducting glue band is first coat of metal, and coating shows it
It is that foam layer surface is set directly at by way of plated film, the volume that can be used when not having each layer of Classical adhesive tape to bond between two layers
Preferable combination can be realized in outer glue-line, and this makes it possible to the heat conductivilitys for further improving heat-conducting glue band.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 shows the structure diagram for the heat-conducting glue band that a kind of typical embodiment according to the present invention provides；
Fig. 2 shows the structure diagram for the heat-conducting glue band that another typical embodiment according to the present invention provides.
Wherein, above-mentioned attached drawing is marked including the following drawings：
10th, first coat of metal；20th, foamed cotton layer；30th, pressure-sensitive adhesive layer；40th, second coat of metal；50th, release film.
Specific embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.Below in conjunction with embodiment, the present invention will be described in detail.
As background technology is described, there are heat dissipation performances when setting buffer protection layer and heat-conducting glue band for OLED screen curtain
The problem of insufficient.
In order to solve the above-mentioned technical problem, this application provides a kind of heat-conducting glue band, as shown in Figure 1, heat-conducting glue band includes
Pressure-sensitive adhesive layer 30,20 and first coat of metal 10 of foamed cotton layer, foamed cotton layer 20 are arranged on a side surface of pressure-sensitive adhesive layer 30；The
One coat of metal 10 is arranged on the surface of 30 one side of separate pressure-sensitive adhesive layer of foamed cotton layer 20.
Pressure-sensitive adhesive layer 30,20 and first coat of metal 10 of foamed cotton layer are provided with simultaneously in above-mentioned heat-conducting glue band, utilization is pressure-sensitive
Heat-conducting layer can be bonded on OLED screen curtain by glue-line 30, while set 20 and first coat of metal 10 of foamed cotton layer that can make heat conduction
Adhesive tape is provided simultaneously with good cushion performance and heat conductivility.Especially, the heat-conducting layer in the heat-conducting glue band is the first metal-plated
Layer 10, coating shows that it is that 20 surface of foamed cotton layer is set directly at by way of plated film, does not have the Classical adhesive tape each between two layers
Preferable combination can be realized in the additional glue-line that layer can use when bonding, and this makes it possible to the heat conduction for further improving heat-conducting glue band
Performance.
In addition, due to not having to preferable knot can be realized by glue-line between first coat of metal 10 and foamed cotton layer 20
It closes so that first coat of metal 10 can be set itself more thinner can be realized preferable thermal conductivity, such heat-conducting glue band
The bending resistance of itself can also be effectively improved, and be not in when metal heat-conducting layer is thicker easily after the bending of caused adhesive tape
The problem of folding line is apparent.
In order to further improve the heat conductivility of adhesive tape, as shown in Fig. 2, in a preferred embodiment, heat-conducting glue
Band further includes second coat of metal 40, and second coat of metal 40 is arranged on the surface of 30 one side of close pressure-sensitive adhesive layer of foamed cotton layer 20
On.Similarly, second coat of metal 40 shows that it is set by way of the plated films such as metal evaporation, sputtering, plating, second
Can have without adhesive glue combination between the coat of metal 40 and foamed cotton layer 20 and be well bonded, so be also beneficial to further
Improve the heat conductivility of adhesive tape.
In a preferred embodiment, the material of first coat of metal 10 and second coat of metal 40 is separately
One or more in metallic copper, metallic aluminium, metallic silver and metallic gold.The thermal conductivity of above-mentioned several metal materials is more preferable,
Be conducive to further improve the heat conductivility of adhesive tape.
In a preferred embodiment, the thickness of first coat of metal 10 isPreferably, the second metal
The thickness of coating 40 isBy the thickness control of first coat of metal 10 and second coat of metal 40 in above range
It is interior, the thermal conductivity of adhesive tape on the one hand can be made to be maintained at higher level, on the other hand can also make adhesive tape that there is better bending resistance
Folding endurance energy.
In a preferred embodiment, heat-conducting glue band further includes release film 50, and release film 50 is arranged on pressure-sensitive adhesive layer
On one side surface of 30 separate foamed cotton layer 20.So heat-conducting glue tape wrapping is put in storage and storage and transportation process in can be effective
The self-adhesion of mode adhesive tape.
Type commonly used in the art may be employed in the material of above-mentioned foamed cotton layer 20.In a preferred embodiment, shape
Material into foamed cotton layer 20 includes resin and foaming agent；Preferred resin is polyethylene and/or polyurethane；Preferably, foaming agent is
One or more in azo foaming agent, sulfohydrazide type blowing agent and nitroso group foaming agent.It is prepared using above-mentioned material
Foamed cotton layer 20 has better cushion performance.In addition, polyurethane has preferable resilience performance, flame retardant property and moisture resistance
Can, and polyethylene has preferable mechanical performance.The foamed cotton layer 20 formed simultaneously using polyethylene and polyurethane, cooperation foaming agent
In addition to good cushion performance, good anti-flammability, moisture resistance and good mechanical performance have also been had both.
It is highly preferred that by weight, formed the material of foamed cotton layer 20 include 1000~1500 parts polyethylene, 200~
300 parts of polyurethane and 0.5~5 part of foaming agent.
In order to further improve the heat conductivility of adhesive tape, in a preferred embodiment, by weight, bubble is formed
The material of cotton layer 20 further includes 0.5~5 part of heat filling；Preferably, heat filling is carbon black, carbon nanotubes, graphene, copper
One or more in powder, aluminium powder, silver powder and bronze.Heat filling is added in foamed cotton layer 20, is conducive to improve foamed cotton layer 20
The heat conductivility of itself, so as to further improve the entire heat conductivility of adhesive tape.
In a preferred embodiment, the thickness of foamed cotton layer 20 is 0.05~0.3mm；Preferably, pressure-sensitive adhesive layer 30
Thickness be 8~20 μm.
According to another aspect of the present invention, a kind of production method of heat-conducting glue band is additionally provided, including：Prepare foamed cotton layer
20；Using the mode of metal evaporation, plating or sputtering, first coat of metal 10 is set on a side surface of foamed cotton layer 20；And
Pressure-sensitive adhesive layer 30 on the surface away from first coat of metal, 10 one side of foamed cotton layer 20 is set, and then forms heat-conducting glue band.
The heat-conducting glue band that above-mentioned production method obtains includes pressure-sensitive adhesive layer 30,20 and first coat of metal 10 of foamed cotton layer, profit
Heat-conducting layer can be bonded in pressure-sensitive adhesive layer 30 on OLED screen curtain, while sets 20 and first coat of metal 10 of foamed cotton layer can be with
Heat-conducting glue band is made to be provided simultaneously with good cushion performance and heat conductivility.Especially, the side of metal evaporation, plating or sputtering is utilized
Formula sets first coat of metal 10 in the one side of foamed cotton layer 20 directly on a surface so that does not have each layer of Classical adhesive tape to glue between two layers
Preferable combination can be realized in the additional glue-line that can be used during knot, and this makes it possible to the thermal conductivity for further improving heat-conducting glue band
Energy.In addition, due to not having to preferable combination can be realized by glue-line between first coat of metal 10 and foamed cotton layer 20, make
First coat of metal 10 itself can set it is more thinner can be realized preferable thermal conductivity, such heat-conducting glue band is in itself
Bending resistance can also be effectively improved, and be not in that easily folding line is bright after the bending of caused adhesive tape when metal heat-conducting layer is thicker
The problem of aobvious.
In order to further improve the heat conductivility of adhesive tape, before setting pressure-sensitive adhesive layer 30, production method further includes：Utilize gold
The mode for belonging to vapor deposition, plating or sputtering sets the second metal on the surface away from first coat of metal, 40 one side of foamed cotton layer 20
Then coating 10 sets pressure-sensitive adhesive layer 30 on the second surface of the coat of metal 40 away from 20 one side of foamed cotton layer, and then is formed and led
Thermal bonding tape.Similarly, second coat of metal 40, the second metal-plated are set by way of the plated films such as metal evaporation, sputtering, plating
Can have without adhesive glue combination between layer 40 and foamed cotton layer 20 and be well bonded, so be also beneficial to further improve glue
The heat conductivility of band.
Preferably, after the step of setting pressure-sensitive adhesive layer 30, production method is additionally included in pressure-sensitive adhesive layer 30 away from foamed cotton layer
The step of release film 50 on 20 side surface is set and then forms heat-conducting glue band.So heat-conducting glue tape wrapping is being put in storage and stored up
Deposit in transportational process can adhesive tape in an efficient way self-adhesion.
In a preferred embodiment, the step of forming foamed cotton layer 20 includes：Resin and foaming agent are blended, are made
Master slice；And irradiate master slice by gamma-rays, foamed cotton layer 20 is made.Master slice is irradiated by using gamma-rays, is drawn
It sends out foaming agent to decompose, triggers cross-linking reaction, numerous bubbles can be generated in master slice, so as to obtain foamed cotton layer 20.
Preferably, during resin and foaming agent being blended, while heat filling is added in.Bubble can so be improved
Cotton 20 heat conductivility of itself of layer, so as to be conducive to further improve the heat conductivility of entire adhesive tape.
Preferably, the irradiation of radiation treatment process is 40~80kGy.On the irradiation of irradiation process includes but not limited to
Scope is stated, is limited the foamed time for being conducive to shorten foam within the above range, while but also hole inside foam
Rate is more homogeneous.
In a preferred embodiment, resin includes polyethylene and polyurethane, and the step of preparing master slice includes：It will be poly-
Ethylene is divided into first part, second part and the 3rd part, is denoted as polyethylene A, polyethylene B and polyethylene C successively；By polyethylene A with gathering
Urethane carries out the first mixing process, obtains foaming master batch；Polyethylene B, heat filling and foaming agent are subjected to the second mixing process,
Obtain auxiliary agent master batch；Foaming master batch, auxiliary agent master batch and polyethylene C are blended, master slice is made.Using above-mentioned preparation method,
It can be mixedly more uniformly distributed between polyethylene, polyurethane, heat filling and foaming agent, heat filling and foaming agent are in master slice
It is scattered be more uniformly distributed, be conducive to improve foamed cotton layer overall performance, such as：The fine dispersion of heat filling is conducive to further
The overall thermal conductivity of adhesive tape is improved, the fine dispersion of foaming agent is conducive to form more fine and closely woven stomata in foamed cotton layer, for
The improvement of resiliency becomes apparent.
Preferably, polyurethane is selected from polyester-type thermoplastic polyurethane and/or polyether thermoplastic polyurethane, is preferably polyethers
Type thermoplastic polyurethane.
Preferably, polyethylene is selected from the group of high density polyethylene (HDPE), low density polyethylene (LDPE) and linear low density polyethylene composition
In one or more, be preferably high density polyethylene (HDPE).
In actual manufacturing process, for above-mentioned polyethylene A, polyethylene B and polyethylene C and heat filling, foaming agent,
Weight ratio between polyurethane can be adjusted.
Preferably, the weight ratio of foaming concentrate, aid master batches and polyethylene C is 1:0.1~0.4:1~3.Foaming master batch,
The weight ratio of auxiliary agent master batch and polyethylene C include but not limited to above range, and limited be conducive within the above range into
One step improves the comprehensive performance of foamed cotton layer 20.Preferably 1:0.2:2.
Preferably, in foaming concentrate, the weight ratio of polyurethane and polyethylene A are 0.5~1.5:0.5~1.5.Polyethylene A
Include but not limited to above range with the weight ratio of the weight ratio of thermoplastic polyurethane, and limited favourable within the above range
In the resilience performance and mechanical strength that further improve foamed cotton layer 20.It is preferred that the weight ratio of polyurethane and polyethylene A are 1:1.
Preferably, in aid master batches, the weight ratio of polyethylene B, heat filling and foaming agent are 50~150:0.5~1.5:
0.5~1.5.The weight ratio of polyethylene B, heat filling and foaming agent include but not limited to above range, and are limited to
Be conducive to further improve the cushion performance and heat conductivility of foamed cotton layer 20 in the range of stating.It is preferred that polyethylene B, heat filling and hair
The weight ratio of infusion is 100:1:1.
In a preferred embodiment, after the step of carrying out radiation treatment, production method further includes：To through spoke
According to treated, master slice carries out sided corona treatment, obtains foamed cotton layer 20.Sided corona treatment is carried out to the master slice after irradiation to be conducive to improve
The degree of roughness on 20 surface of foamed cotton layer, so as to be conducive to improve foamed cotton layer and first coat of metal 10 and subsequent pressure-sensitive adhesive layer 30
Or the second fitting intensity between the coat of metal 40.
According to another aspect of the present invention, a kind of electronic equipment is additionally provided, including display screen and above-mentioned heat-conducting glue
Band, and heat-conducting glue band is covered in the back side of display screen.Pressure-sensitive adhesive layer 30,20 and of foamed cotton layer are provided in above-mentioned heat-conducting glue band simultaneously
Heat-conducting layer can be bonded on OLED screen curtain by first coat of metal 10 using pressure-sensitive adhesive layer 30, while set 20 He of foamed cotton layer
First coat of metal 10 can make heat-conducting glue band be provided simultaneously with good cushion performance and heat conductivility.Especially, the heat-conducting glue
Heat-conducting layer in band is first coat of metal 10, and coating shows that it is that 20 table of foamed cotton layer is set directly at by way of plated film
Face, the additional glue-line that can be used when not having between two layers each layer of Classical adhesive tape to bond can be realized preferable combination, thus can
Enough heat conductivilitys for further improving heat-conducting glue band.More than reason is based on, in electronic equipment provided by the invention, for display screen
With good buffer protection, at the same time, the heat dissipation performance of display screen is more preferably.
The application is described in further detail below in conjunction with specific embodiment, these embodiments are it is not intended that limit this
Apply for scope claimed.
The performance of heat-conducting glue band in embodiment is tested using following methods：
The test of thermal conductivity factor：Heat conduction coefficient tester, LW9389, ASTM 5470；
Bending is：0-3 ° of doubling of bending angle, folds are more than 100 times, no folding line, and uncoated remove is OK；
Venting quality is：Sample is attached on affixed object (such as sus304), how much is observation bubble, bubble-free OK.
180 DEG C of peeling forces：Tensilon, GBT-2792-2014.
The method of metal evaporation specifically can be as follows：During vapor deposition, reel drum film is placed in vacuum chamber, closes vacuum chamber
It vacuumizes.When vacuum degree reaches certain (4 × 10- 4More than Pa) when, evaporation boat is warming up to 1300~1400 DEG C, then again
The wire (copper, aluminium, silver) that purity is 99.9% is continuously sent to evaporation boat.It regulates and unreels speed (100~400, m/
Min), rolling speed (100~400, m/min), wire feed rate (0.4~0.7m/min) and evaporation capacity, open cooling source, make aluminium
Silk is continuously melted on evaporation boat, evaporated, so as to form one layer of bright coat of metal after mobile film surface cooling.
Embodiment 1
This embodiment offers heat-conducting glue band, structure as shown in Figure 1, include first coat of metal, foam from the bottom to top
Layer, pressure-sensitive adhesive layer and release film.Specific preparation process is as follows：
It is first part, second part and the 3rd part by sub-polyethylene, is denoted as polyethylene A, polyethylene B and polyethylene C successively；Hair
Steep master batch：Polyethylene A and polyurethane are subjected to the first mixing process, obtain foaming master batch, wherein, polyethylene A and polyurethane
Weight ratio is 1:1；
Polyethylene B, carbon nanotubes and azodicarbonamide are subjected to the second mixing process, obtain auxiliary agent master batch, wherein, gather
The weight ratio of ethylene B, carbon nanotubes and azodicarbonamide are 100:1:1；
Foaming master batch, auxiliary agent master batch and polyethylene C are blended, master slice is made, wherein, foaming master batch, auxiliary agent master batch
And the weight ratio of polyethylene C is 1:0.2:2 (total raw material proportioning is equivalent to：1078.4 parts of polyethylene, 200 parts of polyurethane,
0.8 part of foaming agent, 0.8 part of carbon nanotubes)；Master slice by gamma-rays is irradiated, the foam that thickness is 0.2mm is made
Layer, irradiation 50kGy；And sided corona treatment is carried out to the surface of above-mentioned foamed cotton layer, for use.
Above-mentioned foamed cotton layer is subjected to single side copper facing and forms first coat of metal, thickness of coating is
Pressure is coated using slit coating (slot die) mode on the surface of the not copper-plated one side of foamed cotton layer
Quick glue, coating thickness are 10 μm, obtain pressure-sensitive adhesive layer.Release film is bonded on pressure-sensitive adhesive layer, obtains final heat-conducting glue band.
The performance of heat-conducting glue band is characterized, it is as a result as follows：
Thermal conductivity factor (z directions)：120w/(m.k)；Bending resistance：OK；Venting quality：OK；Peeling force (180 °)：800gf.
Embodiment 2
Manufacture craft with embodiment 1, the difference is that：The thickness of first coat of metal is
The performance of heat-conducting glue band is characterized, it is as a result as follows：
Thermal conductivity factor (z directions)：140w/(m.k)；Bending resistance：OK；Venting quality：OK；Peeling force (180 °)：800gf.
Embodiment 3
Manufacture craft with embodiment 1, the difference is that：The thickness of first coat of metal is
The performance of heat-conducting glue band is characterized, it is as a result as follows：
Thermal conductivity factor (z directions)：110w/(m.k)；Bending resistance：OK；Venting quality：OK；Peeling force (180 °)：810gf.
Embodiment 4
Manufacture craft with embodiment 1, the difference is that：The thickness of first coat of metal is
The performance of heat-conducting glue band is characterized, it is as a result as follows：
Thermal conductivity factor (z directions)：90w/(m.k)；Bending resistance：OK；Venting quality：OK；Peeling force (180 °)：810gf.
Embodiment 5
Manufacture craft with embodiment 1, the difference is that：To foamed cotton layer carry out it is copper-plated during, to foamed cotton layer into
The two-sided copper facing of row, in the structure of adhesive tape, from the bottom to top including first coat of metal, foamed cotton layer, second coat of metal, pressure-sensitive adhesive layer
And release film, wherein the thickness of first coat of metal and second coat of metal is
The performance of heat-conducting glue band is characterized, it is as a result as follows：
Thermal conductivity factor (z directions)：150w/(m.k)；Bending resistance：OK；Venting quality：OK；Peeling force (180 °)：800gf.
Embodiment 6
Manufacture craft with embodiment 1, the difference is that：The thickness of foamed cotton layer is 0.05mm, and the thickness of pressure sensitive adhesive is 20 μ
m。
The performance of heat-conducting glue band is characterized, it is as a result as follows：
Thermal conductivity factor (z directions)：130w/(m.k)；Bending resistance：OK；Venting quality：OK；Peeling force (180 °)：820gf.
Embodiment 7
Manufacture craft with embodiment 1, the difference is that：The thickness of foamed cotton layer is 0.3mm, and the thickness of pressure sensitive adhesive is 8 μm.
The performance of heat-conducting glue band is characterized, it is as a result as follows：
Thermal conductivity factor (z directions)：110w/(m.k)；Bending resistance：OK；Venting quality：OK；Peeling force (180 °)：790gf.
Embodiment 6
Manufacture craft with embodiment 1, the difference is that：The thickness of foamed cotton layer is 0.35mm, and the thickness of pressure sensitive adhesive is 30 μ
m。
The performance of heat-conducting glue band is characterized, it is as a result as follows：
Thermal conductivity factor (z directions)：90w/(m.k)；Bending resistance：OK；Venting quality：OK；Peeling force (180 °)：820gf.
Embodiment 7
Manufacture craft with embodiment 1, the difference is that：During making foamed cotton layer, polyethylene B in auxiliary agent master batch,
Carbon nanotubes and the weight ratio of azodicarbonamide are 74.2:0.8:5, total raw material proportioning is equivalent to：1074.2 the poly- second of part
Alkene, 200 parts of polyurethane, 0.8 part of foaming agent, 5 parts of carbon nanotubes.
The performance of heat-conducting glue band is characterized, it is as a result as follows：
Thermal conductivity factor (z directions)：130w/(m.k)；Bending resistance：OK；Venting quality：OK；Peeling force (180 °)：800gf.
Embodiment 8
Manufacture craft with embodiment 1, the difference is that：During making foamed cotton layer, polyethylene B in auxiliary agent master batch,
Carbon nanotubes and the weight ratio of azodicarbonamide are 196:2.75:1.25, total raw material proportioning is equivalent to：1078.4 parts poly-
Ethylene, 200 parts of polyurethane, 1.1 parts of foaming agent, 0.5 part of carbon nanotubes.
The performance of heat-conducting glue band is characterized, it is as a result as follows：
Thermal conductivity factor (z directions)：112w/(m.k)；Bending resistance：OK；Venting quality：OK；Peeling force (180 °)：800gf.
Embodiment 9
Manufacture craft with embodiment 1, the difference is that：During making foamed cotton layer, carbon nanotubes is not added in, total
Raw material proportioning is equivalent to：1079.2 parts of polyethylene, 200 parts of polyurethane, 0.8 part of foaming agent.
The performance of heat-conducting glue band is characterized, it is as a result as follows：
Thermal conductivity factor (z directions)：105w/(m.k)；Bending resistance：OK；Venting quality：OK；Peeling force (180 °)：800gf.
Embodiment 10
Manufacture craft with embodiment 1, the difference is that：The material of first coat of metal is metallic silver.
The performance of heat-conducting glue band is characterized, it is as a result as follows：
Thermal conductivity factor (z directions)：118w/(m.k)；Bending resistance：OK；Venting quality：OK；Peeling force (180 °)：800gf.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
Pressure-sensitive adhesive layer, foamed cotton layer and first coat of metal are provided with simultaneously in above-mentioned heat-conducting glue band, it can using pressure-sensitive adhesive layer
Heat-conducting layer is bonded on OLED screen curtain, while set foamed cotton layer and first coat of metal that can be provided simultaneously with heat-conducting glue band
Good cushion performance and heat conductivility.Especially, the heat-conducting layer in the heat-conducting glue band is first coat of metal, and coating shows it
It is that foam layer surface is set directly at by way of plated film, the volume that can be used when not having each layer of Classical adhesive tape to bond between two layers
Preferable combination can be realized in outer glue-line, and this makes it possible to the heat conductivilitys for further improving heat-conducting glue band.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (14)
1. a kind of heat-conducting glue band, which is characterized in that the heat-conducting glue band includes：
Pressure-sensitive adhesive layer (30)；
Foamed cotton layer (20) is arranged on a side surface of the pressure-sensitive adhesive layer (30)；And
First coat of metal (10), first coat of metal (10) are arranged on the separate pressure sensitive adhesive of the foamed cotton layer (20)
On the surface of layer (30) one side.
2. heat-conducting glue band according to claim 1, which is characterized in that the heat-conducting glue band further includes second coat of metal
(40), second coat of metal (40) is arranged on the surface of the close pressure-sensitive adhesive layer (30) one side of the foamed cotton layer (20)
On.
3. heat-conducting glue band according to claim 2, which is characterized in that first coat of metal (10) and second gold medal
Belong to the material separately one or more in metallic copper, metallic aluminium, metallic silver and metallic gold of coating (40).
4. heat-conducting glue band according to claim 3, which is characterized in that the thickness of first coat of metal (10) isPreferably, the thickness of second coat of metal (40) is
5. heat-conducting glue band according to any one of claim 1 to 4, which is characterized in that the heat-conducting glue band further include from
Type film (50), the release film (50) are arranged on the side surface away from the foamed cotton layer (20) of the pressure-sensitive adhesive layer (30)
On.
6. heat-conducting glue band according to any one of claim 1 to 5, which is characterized in that form the foamed cotton layer (20)
Material includes resin and foaming agent；It is preferred that the resin is polyethylene and/or polyurethane；Preferably, the foaming agent is azo
One or more in class foaming agent, sulfohydrazide type blowing agent and nitroso group foaming agent；It is highly preferred that by weight, shape
Into the foamed cotton layer (20) material include 1000~1500 parts the polyethylene, 200~300 parts of the polyurethane and
0.5~5 part of the foaming agent.
7. heat-conducting glue band according to claim 6, which is characterized in that by weight, form the foamed cotton layer (20)
Material further includes 0.5~5 part of heat filling；Preferably, the heat filling for carbon black, carbon nanotubes, graphene, copper powder,
One or more in aluminium powder, silver powder and bronze.
8. heat-conducting glue band according to any one of claim 1 to 5, which is characterized in that the thickness of the foamed cotton layer (20)
For 0.05~0.3mm；Preferably, the thickness of the pressure-sensitive adhesive layer (30) is 8~20 μm.
A kind of 9. production method of heat-conducting glue band described in any item of the claim 1 to 8, which is characterized in that the making side
Method includes：
Prepare foamed cotton layer (20)；
First coat of metal is set on a side surface of the foamed cotton layer (20) using the mode of metal evaporation, plating or sputtering
(10)；And
Pressure-sensitive adhesive layer (30) is set on the surface away from first coat of metal (10) one side of the foamed cotton layer (20), into
And form the heat-conducting glue band.
10. production method according to claim 9, which is characterized in that before the pressure-sensitive adhesive layer (30) is set, the system
It is further included as method：Using the mode of metal evaporation, plating or sputtering in the foamed cotton layer (20) away from first metal
Second coat of metal (10) is set on the surface of coating (40) one side, then in second coat of metal (40) away from the bubble
The pressure-sensitive adhesive layer (30) is set on the surface of cotton layer (20) one side, and then forms the heat-conducting glue band；
Preferably, after the step of setting the pressure-sensitive adhesive layer (30), the production method is additionally included in the pressure-sensitive adhesive layer
(30) the step of release film (50) on the side surface away from the foamed cotton layer (20) is set and then forms the heat-conducting glue band.
11. the production method according to claim 9 or 10, which is characterized in that the step of forming the foamed cotton layer (20) is wrapped
It includes：
Resin and foaming agent are blended, master slice is made；And
The master slice by gamma-rays is irradiated, the foamed cotton layer (20) is made；
Preferably, during the resin and the foaming agent being blended, while heat filling is added in；
Preferably, the irradiation of the radiation treatment process is 40~80kGy.
12. production method according to claim 11, which is characterized in that the resin includes polyethylene and polyurethane, system
The step of standby master slice, includes：
It is first part, second part and the 3rd part by the sub-polyethylene, is denoted as polyethylene A, polyethylene B and polyethylene C successively；
The polyethylene A and the polyurethane are subjected to the first mixing process, obtain foaming master batch；
The polyethylene B, the heat filling and the foaming agent are subjected to the second mixing process, obtain auxiliary agent master batch；
The foaming master batch, the auxiliary agent master batch and the polyethylene C are blended, the master slice is made.
13. production method according to claim 11, which is characterized in that after the step of carrying out the radiation treatment,
The production method further includes：Sided corona treatment is carried out to the master slice after the radiation treatment, obtains the foamed cotton layer (20).
14. a kind of electronic equipment, which is characterized in that the electronic equipment includes any one of display screen and claim 1 to 8 institute
The heat-conducting glue band stated, and the heat-conducting glue band is covered in the back side of the display screen.
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| CN201711497608.XA CN108059929A (en) | 2017-12-28 | 2017-12-28 | Heat-conducting glue band, its production method and electronic equipment |
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| CN201711497608.XA CN108059929A (en) | 2017-12-28 | 2017-12-28 | Heat-conducting glue band, its production method and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112116873A (en) * | 2020-09-24 | 2020-12-22 | 京东方科技集团股份有限公司 | Rollable display device and preparation method of heat-conducting adhesive layer |
| CN112578586A (en) * | 2020-12-22 | 2021-03-30 | Oppo广东移动通信有限公司 | Assembly, display screen module, terminal equipment and manufacturing method of display screen module |
| CN112590347A (en) * | 2020-12-07 | 2021-04-02 | 苏州林大新型材料科技有限公司 | Ultrathin foam for radiating mobile phone and production process thereof |
| CN113201717A (en) * | 2021-03-19 | 2021-08-03 | 深圳市汉嵙新材料技术有限公司 | Manufacturing process of heat dissipation assembly under screen |
| CN113528043A (en) * | 2020-04-16 | 2021-10-22 | 荣耀终端有限公司 | Composite adhesive tape applied to electronic equipment, display module and electronic equipment |
| CN114774032A (en) * | 2022-05-11 | 2022-07-22 | 广东思泉新材料股份有限公司 | Buffer and shock-absorbing heat dissipation foam and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114774032A (en) * | 2022-05-11 | 2022-07-22 | 广东思泉新材料股份有限公司 | Buffer and shock-absorbing heat dissipation foam and preparation method thereof |
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