CN108219698A - Heat-conducting glue band and preparation method thereof - Google Patents
Heat-conducting glue band and preparation method thereof Download PDFInfo
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- CN108219698A CN108219698A CN201711466366.8A CN201711466366A CN108219698A CN 108219698 A CN108219698 A CN 108219698A CN 201711466366 A CN201711466366 A CN 201711466366A CN 108219698 A CN108219698 A CN 108219698A
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- heat
- layer
- conducting
- sensitive adhesive
- foamed cotton
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- 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
- 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
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2475/00—Presence of polyurethane
- C09J2475/006—Presence of polyurethane in the substrate
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of heat-conducting glue bands and preparation method thereof.The heat-conducting glue band includes heat-conducting layer, foamed cotton layer and pressure-sensitive adhesive layer, and foamed cotton layer is arranged on a side surface of heat-conducting layer, and foamed cotton layer is by the way that urethane raw is formed in heat-conducting layer surface in situ foamed polymer；Pressure-sensitive adhesive layer is arranged on surface of the heat-conducting layer far from foamed cotton layer side.Directly heat-conducting layer and foamed cotton layer can be bonded on OLED screen curtain using pressure-sensitive adhesive layer, while play the role of buffer protection and heat dissipation.Foamed cotton layer is by the way that urethane raw is formed in heat-conducting layer surface in situ foamed polymer; it is that direct in-situ is combined to be equivalent to heat-conducting layer and foamed cotton layer; it does not need to bond by pressure sensitive adhesive again among the two, the pressure sensitive adhesive that cementation is played among heat-conducting layer and foamed cotton layer has been lacked compared to traditional heat dissipation and buffering safeguard measure.Heat dissipation effect can be significantly improved while buffer protection function is played to OLED screen curtain in this way.
Description
Technical field
The present invention relates to adhesive tape technical field, in particular to a kind of heat-conducting glue band and preparation method thereof.
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 are as basal layer, but due to glass
Or the heat transfer efficiency of PI is poor, generally requires to increase cooling measure.The existing cooling measure for OLED screen curtain mainly uses
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 to exist
OLED screen backstage bonds heat-conducting glue band and (is provided with one layer of pressure sensitive adhesive on heat-conducting glue band in itself, can be directly bonded to OLED screen curtain
On), 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 band
Pressure sensitive adhesive is bonded between foamed cotton layer can substantially reduce the heat dissipation effect of screen.
Invention content
It is of the prior art to solve it is a primary object of the present invention to provide a kind of heat-conducting glue band and preparation method thereof
OLED screen curtain the problem of existing radiating efficiency is poor when setting foamed cotton layer as buffer protection layer.
To achieve these goals, according to an aspect of the invention, there is provided a kind of heat-conducting glue band, including：Heat conduction
Layer；Foamed cotton layer is arranged on a side surface of heat-conducting layer, and foamed cotton layer is by the way that urethane raw is sent out in heat-conducting layer surface in situ
Bubble polymerization is formed；And pressure-sensitive adhesive layer, it is arranged on surface of the heat-conducting layer far from foamed cotton layer side.
Further, the thickness of heat-conducting layer is 10~30 μm；Preferably, the thermal conductivity factor of heat-conducting layer is 100~1500w/
(m.k)。
Further, heat-conducting layer is graphite flake, layers of copper, aluminium foil or carbon nanotube copper foil.
Further, by weight, urethane raw includes 100 parts of polyether polyol, 20~40 parts of isocyanic acid
Ester, 0.8~2.5 part of foaming agent and 0.2~1.5 part of catalyst.
Further, the molecular weight of polyether polyol is 800~2000, and hydroxyl value is 80~200mgKOH/g；Preferably, it is different
Cyanate is methyl diphenylene diisocyanate, two isocyanide of toluene di-isocyanate(TDI), 1,5- naphthalene diisocyanates and hexa-methylene
It is one or more in acid esters；Preferably, foaming agent is one in water, CFC-11, HCFC-141b, pentamethylene and dichloromethane
Kind is a variety of；Preferably, catalyst is one or more in stannous octoate, triethylamine and dibutyltin diacetate.
Further, by weight, urethane raw further include 1~3 part foam stabiliser and 3~8 parts of heat conduction
Filler；Preferably, foam stabiliser is silicone oil and/or alkylsulfonate；Preferably, heat filling for carbon black, carbon nanotube and
It is one or more in graphene.
Further, the thickness of foamed cotton layer is 0.05~0.3mm；Preferably, the thickness of pressure-sensitive adhesive layer is 8~20 μm.
Further, heat-conducting glue band further includes release film, and release film is arranged on table of the pressure-sensitive adhesive layer far from foamed cotton layer side
On face.
According to another aspect of the present invention, a kind of production method of heat-conducting glue band is additionally provided, is included the following steps：It carries
For heat-conducting layer；The foam in place polymerization of urethane raw is carried out on a side surface of heat-conducting layer, forms foamed cotton layer；In heat-conducting layer
Pressure-sensitive adhesive coating is to form pressure-sensitive adhesive layer on surface far from foamed cotton layer side, and then forms heat-conducting glue band.
Further, heat-conducting layer is graphite flake, and in the step of providing heat-conducting layer, the upper surface of heat-conducting layer is additionally provided with first
Protective film, the lower surface opposite with upper surface are additionally provided with the second protective film；The step of forming foamed cotton layer includes：Remove heat-conducting layer
First protective film of upper surface, in heat-conducting layer upper surface, cast polyurethane raw material carries out foam in place polymerization, and then forms foam
Layer；The step of forming pressure-sensitive adhesive layer includes：The second protective film of heat-conducting layer lower surface is removed, is coated in heat-conducting layer lower surface pressure-sensitive
Glue is to form pressure-sensitive adhesive layer.
Further, after the step of forming pressure-sensitive adhesive layer, production method is additionally included in pressure-sensitive adhesive layer far from foamed cotton layer one
The step of release film is set on the surface of side.
The present invention provides a kind of heat-conducting glue bands and preparation method thereof.The heat-conducting glue band includes heat-conducting layer, foamed cotton layer and pressure
Quick glue-line, foamed cotton layer are arranged on a side surface of heat-conducting layer, and foamed cotton layer pass through by urethane raw heat conduction layer surface original
Position foamed polymer is formed；Pressure-sensitive adhesive layer is arranged on surface of the heat-conducting layer far from foamed cotton layer side.
Simultaneously containing heat-conducting layer, foamed cotton layer and pressure-sensitive adhesive layer in the heat-conducting glue band, pressure-sensitive adhesive layer is arranged on heat-conducting layer side,
Directly heat-conducting layer and foamed cotton layer can be bonded on OLED screen curtain using pressure-sensitive adhesive layer, while play buffer protection and the work of heat dissipation
With.And the foamed cotton layer in heat-conducting glue band of the present invention be by the way that urethane raw is formed in heat-conducting layer surface in situ foamed polymer,
It is that direct in-situ is combined to be equivalent to heat-conducting layer and foamed cotton layer, does not need to bond by pressure sensitive adhesive again among the two, phase
Than the pressure sensitive adhesive of the cementation among traditional heat dissipation and the few heat-conducting layer of buffering safeguard measure and foamed cotton layer.It in this way can be with
While buffer protection function is played to OLED screen curtain, heat dissipation effect is significantly improved.At the same time, it is provided using the present invention
Heat-conducting glue band, without individually setting buffer protection layer again, this can also improve the production efficiency of OLED screen curtain, and omit heat conduction
Pressure sensitive adhesive between layer and foamed cotton layer is also beneficial to economize on resources and energy consumption.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide 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 of heat-conducting glue band according to an embodiment of the present.
Wherein, above-mentioned attached drawing is marked including the following drawings：
10th, heat-conducting layer；20th, foamed cotton layer；30th, pressure-sensitive adhesive layer；40th, release film.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
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 range claimed.
As background technology part is described, OLED screen curtain of the prior art is in setting foamed cotton layer as buffer protection
Layer when there are radiating efficiency it is poor the problem of.
In order to solve this problem, the present invention provides a kind of heat-conducting glue band, as shown in Figure 1, it includes heat-conducting layer 10, bubble
Cotton layer 20 and pressure-sensitive adhesive layer 30；Foamed cotton layer 20 is arranged on a side surface of heat-conducting layer 10, and foamed cotton layer 20 is by by polyurethane
Raw material is formed in 10 surface in situ foamed polymer of heat-conducting layer；Pressure-sensitive adhesive layer 30 is arranged on heat-conducting layer 10 far from 20 side of foamed cotton layer
On surface.
It is pressure-sensitive simultaneously containing heat-conducting layer 10, foamed cotton layer 20 and pressure-sensitive adhesive layer 30 in above-mentioned heat-conducting glue band provided by the invention
Glue-line 30 is arranged on heat-conducting layer side, and foamed cotton layer 20 is arranged on the opposite side of heat-conducting layer 10, using pressure-sensitive adhesive layer 30 can directly by
Heat-conducting layer 10 and foamed cotton layer 20 are bonded on OLED screen curtain, while play the role of buffer protection and heat dissipation.And heat conduction of the present invention
Foamed cotton layer 20 in adhesive tape is by being formed urethane raw in 10 surface in situ foamed polymer of heat-conducting layer, being equivalent to heat-conducting layer
10 and foamed cotton layer 20 be that direct in-situ is combined, do not need to bond by pressure sensitive adhesive again among the two, compared to tradition
Heat dissipation and buffering safeguard measure lacked the pressure sensitive adhesive that cementation is played among heat-conducting layer 10 and foamed cotton layer 20.It in this way can be right
While OLED screen curtain plays buffer protection function, heat dissipation effect is significantly improved.At the same time, it is led using provided by the invention
Thermal bonding tape, without individually setting buffer protection layer again, this can also improve the production efficiency of OLED screen curtain, and omit heat-conducting layer 10
Pressure sensitive adhesive between foamed cotton layer 20 is also beneficial to economize on resources and energy consumption.
In above-mentioned heat-conducting glue band provided by the invention, thickness, thermal conductivity factor of heat-conducting layer 10 etc. can be adjusted, material
Material can also select material commonly used in the art.And in a preferred embodiment, the thickness of heat-conducting layer 10 is 10~30 μ
m；Preferably, the thermal conductivity factor of heat-conducting layer 10 is 1000~3000w/ (m.k).The thickness of heat-conducting layer and thermal conductivity factor control are existed
Should in the range of, the heat dissipation effect of OLED screen curtain can be improved on the basis of thin as possible.
In a preferred embodiment, heat-conducting layer 10 is graphite flake, layers of copper, aluminium foil or carbon nanotube copper foil.These
Material layer has the relatively high capacity of heat transmission, can further improve the heat dissipation effect of OLED screen curtain.At the same time, polyurethane
Have after raw material carries out foam in place polymerization on the surface of these types of material layer, between foamed cotton layer 20 and heat-conducting layer 10 preferably viscous
Tie power.It is highly preferred that above-mentioned heat-conducting layer 10 is graphite flake.Graphite flake as heat-conducting layer 10, heat-conducting effect more preferably, with foamed cotton layer 20
Between combine closer, be conducive to further improve the stability of OLED screen curtain.
The material of above-mentioned foamed cotton layer 20 can be material commonly used in the art.In a preferred embodiment, by weight
Part meter is measured, urethane raw includes 100 parts of polyether polyol, 20~40 parts of isocyanates, 0.8~2.5 part of foaming agent
And 0.2~1.5 part of catalyst.The foamed cotton layer 20 that urethane raw under being matched using said components is formed has preferably slow
Punching acts on.
In a preferred embodiment, the molecular weight of polyether polyol is 800~2000, hydroxyl value for 80~
200mgKOH/g；Preferably, isocyanates for methyl diphenylene diisocyanate (MDI), toluene di-isocyanate(TDI) (TDI), 1,
It is one or more in 5- naphthalene diisocyanates (NDI) and hexamethylene diisocyanate (HDI)；Preferably, foaming agent for water,
It is one or more in CFC-11, HCFC-141b, pentamethylene and dichloromethane；Preferably, catalyst is stannous octoate, three second
It is one or more in amine and dibutyltin diacetate.Using above-mentioned raw materials, the comprehensive performance of foamed cotton layer 20 is more preferably.
In a preferred embodiment, by weight, urethane raw further includes 1~3 part of foam stabiliser
With 3~8 parts of heat filling.It adds in foam stabiliser and is conducive to abscess in balanced foamed cotton layer, adding in heat filling can be into
One step improves the heat conductivility of adhesive tape.Preferably, foam stabiliser is silicone oil and/or alkylsulfonate；Preferably, heat filling
It is one or more in carbon black, carbon nanotube and graphene.
In order to further improve heat-conducting glue band between the buffer protection function and adhesive tape of OLED screen curtain and OLED screen curtain
Cementation, in a preferred embodiment, the thickness of foamed cotton layer 20 is 0.05~0.3mm；Preferably, pressure-sensitive adhesive layer
30 thickness is 8~20 μm.
For the purpose for facilitating storage and transport, in a preferred embodiment, heat-conducting glue band further includes release film
40, release film 40 is arranged on surface of the pressure-sensitive adhesive layer 30 far from 20 side of foamed cotton layer.It is put in storage in this way by heat-conducting glue tape wrapping
And in storage and transportation process can adhesive tape in an efficient way self-adhesion.
According to another aspect of the present invention, a kind of production method of heat-conducting glue band is additionally provided, is included the following steps：It carries
For heat-conducting layer 10；The foam in place polymerization of urethane raw is carried out on a side surface of heat-conducting layer 10, forms foamed cotton layer 20；
Pressure-sensitive adhesive coating is to form pressure-sensitive adhesive layer 30 on surface of the heat-conducting layer 10 far from 20 side of foamed cotton layer, and then forms heat-conducting glue band.
Contain heat-conducting layer 10, foamed cotton layer 20 and pressure-sensitive adhesive layer in the heat-conducting glue band made using above-mentioned production method simultaneously
30, pressure-sensitive adhesive layer 30 is arranged on heat-conducting layer side, and foamed cotton layer 20 is arranged on the opposite side of heat-conducting layer 10, can using pressure-sensitive adhesive layer 30
Know and directly heat-conducting layer 10 and foamed cotton layer 20 are bonded on OLED screen curtain, while play the role of buffer protection and heat dissipation.And this
Foamed cotton layer 20 in invention heat-conducting glue band is by the way that urethane raw is formed in 10 surface in situ foamed polymer of heat-conducting layer, quite
It is that direct in-situ is combined in heat-conducting layer 10 and foamed cotton layer 20, does not need to bond by pressure sensitive adhesive again among the two, phase
Than the pressure sensitive adhesive of the cementation among traditional heat dissipation and the few heat-conducting layer 10 of buffering safeguard measure and foamed cotton layer 20.In this way
Heat dissipation effect can be significantly improved while buffer protection function is played to OLED screen curtain.At the same time, the present invention is utilized
The heat-conducting glue band that the above method makes, when in use without individually setting buffer protection layer on OLED screen curtain again, this can also
Improve the production efficiency of OLED screen curtain, and the pressure sensitive adhesive omitted between heat-conducting layer 10 and foamed cotton layer 20 be also beneficial to economize on resources and
Energy consumption.
In above-mentioned production method, it is directly to carry out foamed polymer on 20 surface of heat-conducting layer to form foamed cotton layer 20.One
In kind of preferred embodiment, heat-conducting layer 10 is graphite flake, and in the step of providing heat-conducting layer 10, the upper surface of heat-conducting layer 10 is also set
The first protective film is equipped with, the lower surface opposite with upper surface is additionally provided with the second protective film；The step of forming foamed cotton layer 20 includes：
The first protective film of 10 upper surface of heat-conducting layer is removed, carrying out foam in place in 10 upper surface cast polyurethane raw material of heat-conducting layer gathers
It closes, and then forms foamed cotton layer 20；The step of forming pressure-sensitive adhesive layer 30 includes：The second protective film of 10 lower surface of heat-conducting layer is removed,
In 10 lower surface pressure-sensitive adhesive coating of heat-conducting layer to form pressure-sensitive adhesive layer 30.Graphite flake has frangible characteristic in itself, on its surface
Two layers of protective film is set, and then removing protective film by step when making heat-conducting glue band is produced, it is possible to prevente effectively from graphite
Piece is gone to sticks and staves, so as to advantageously ensure that the yield of production.
In a preferred embodiment, after the step of forming pressure-sensitive adhesive layer 30, production method is additionally included in pressure-sensitive
The step of release film 40 are set on surface of the glue-line 30 far from 20 side of foamed cotton layer.Heat-conducting glue tape wrapping is being put in storage and stored up in this way
Deposit in transportational process can adhesive tape in an efficient way self-adhesion.
Preferably, the temperature of foamed polymer process is 80~90 DEG C, and the time is 5~10min.
The advantageous effect further illustrated the present invention by the following examples：
Test method：
Peel test force instrument：Tensilon, GBT-2792-2014
Thermal conductivity factor instrument：Heat conduction coefficient tester, LW9389, ASTM 5470
Mist degree and transmission measurement use the haze meter of model NDH2000, test establishing criteria JIS7136；
Venting quality is tested：Sample is attached on affixed object (such as sus304), how much is observation bubble, bubble-free OK.
Embodiment 1
This embodiment offers heat-conducting glue band, structure as shown in Figure 1, include foamed cotton layer, heat-conducting layer, pressure-sensitive from the bottom to top
Glue-line and release film.Specific preparation process is as follows：
Graphite flake is provided as heat-conducting layer, and the upper surface of graphite flake is provided with the first protective film, it is opposite with upper surface
Lower surface is additionally provided with the second protective film；First protective film and the second protective film are PET materials, and thickness is 50 μm；Graphite flake
Thickness is 17 μm, and thermal conductivity factor is 1500w/ (m.k).
The first protective film of graphite flake upper surface is removed, cast polyurethane raw material carries out foam in place in graphite flake upper surface
Polymerization, and then form foamed cotton layer；Wherein, urethane raw includes：Polyether polyol (relative molecular weight 1000, the hydroxyl value of 100g
For 110mgKOH/g, the vacuum dehydration at 140 DEG C in advance, moisture is less than 0.3wt%), two isocyanide of diphenyl methane of 35g
Catalyst (stannous octoate), the silicone oil of 2g and the carbon black of 5g of acid esters, the foaming agent (water) of 1g and 0.5g.Above-mentioned raw materials are mixed
After be cast in graphite flake upper surface, the foamed polymer 5min at a temperature of 90 DEG C, formed thickness be 0.12mm foamed cotton layer.
The second protective film of graphite flake lower surface is removed, slit coating (slot die) is used in the lower surface of graphene
Mode pressure-sensitive adhesive coating forms the pressure-sensitive adhesive layer that thickness is 10 μm.
Release film is bonded on the surface of pressure-sensitive adhesive layer, obtains 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)：20w/(m.k)；Venting quality：OK；Mist degree：99.1%, transmitance：0.1%；Peeling force
(180°)：400gf.
Embodiment 2
This embodiment offers heat-conducting glue band, structure as shown in Figure 1, include foamed cotton layer, heat-conducting layer, pressure-sensitive from the bottom to top
Glue-line and release film.Specific preparation process is as follows：
Graphite flake is provided as heat-conducting layer, and the upper surface of graphite flake is provided with the first protective film, it is opposite with upper surface
Lower surface is additionally provided with the second protective film；First protective film and the second protective film are PET materials, and thickness is 50 μm；Graphite flake
Thickness is 17 μm, and thermal conductivity factor is 1500w/ (m.k).
The first protective film of graphite flake upper surface is removed, cast polyurethane raw material carries out foam in place in graphite flake upper surface
Polymerization, and then form foamed cotton layer；Wherein, urethane raw includes：Polyether polyol (relative molecular weight 1000, the hydroxyl value of 100g
For 110mgKOH/g, the vacuum dehydration at 140 DEG C in advance, moisture is less than 0.3wt%), two isocyanide of diphenyl methane of 35g
Catalyst (stannous octoate), the silicone oil of 2g and the carbon black of 5g of acid esters, the foaming agent (water) of 2g and 0.5g.Above-mentioned raw materials are mixed
After be cast in graphite flake upper surface, the foamed polymer 5min at a temperature of 90 DEG C, formed thickness be 0.12mm foamed cotton layer.
The second protective film of graphite flake lower surface is removed, slit coating (slot die) is used in the lower surface of graphene
Mode pressure-sensitive adhesive coating forms the pressure-sensitive adhesive layer that thickness is 10 μm.
Release film is bonded on the surface of pressure-sensitive adhesive layer, obtains 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)：16w/(m.k)；Venting quality：OK；Mist degree：99.5%, transmitance：0.1%；Peeling force
(180°)：400gf.
Embodiment 3：
This embodiment offers heat-conducting glue band, structure as shown in Figure 1, include foamed cotton layer, heat-conducting layer, pressure-sensitive from the bottom to top
Glue-line and release film.Specific preparation process is as follows：
Carbon nanotube copper foil is provided as heat-conducting layer, carbon nanotube copper thickness is 50 μm, thermal conductivity factor 400w/
(m.k)。
In carbon nanotube copper foil upper surface, cast polyurethane raw material carries out foam in place polymerization, and then forms foamed cotton layer；Its
In, urethane raw includes：Polyether polyol (relative molecular weight 1000, the hydroxyl value 110mgKOH/g, in advance 140 of 100g
Vacuum dehydration at DEG C, moisture be less than 0.3wt%), the methyl diphenylene diisocyanate of 35g, 1g foaming agent (water) and
Catalyst (stannous octoate), the silicone oil of 2g and the carbon black of 5g of 0.5g.Graphite flake upper surface is cast in after above-mentioned raw materials are mixed,
The foamed polymer 5min at a temperature of 90 DEG C forms the foamed cotton layer that thickness is 0.12mm.
The second protective film of graphite flake lower surface is removed, slit coating (slot die) is used in the lower surface of graphene
Mode pressure-sensitive adhesive coating forms the pressure-sensitive adhesive layer that thickness is 10 μm.
Release film is bonded on the surface of pressure-sensitive adhesive layer, obtains 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)：40w/(m.k)；Venting quality：OK；Mist degree：99.9%, transmitance：0%；Peeling force
(180°)：400gf.
Embodiment 4
This embodiment offers heat-conducting glue band, structure as shown in Figure 1, include foamed cotton layer, heat-conducting layer, pressure-sensitive from the bottom to top
Glue-line and release film.Specific preparation process is as follows：
Graphite flake is provided as heat-conducting layer, and the upper surface of graphite flake is provided with the first protective film, it is opposite with upper surface
Lower surface is additionally provided with the second protective film；First protective film and the second protective film are PET materials, and thickness is 50 μm；Graphite flake
Thickness is 10 μm, and thermal conductivity factor is 1500w/ (m.k).
The first protective film of graphite flake upper surface is removed, cast polyurethane raw material carries out foam in place in graphite flake upper surface
Polymerization, and then form foamed cotton layer；Wherein, urethane raw includes：Polyether polyol (relative molecular weight 1000, the hydroxyl value of 100g
For 110mgKOH/g, the vacuum dehydration at 140 DEG C in advance, moisture is less than 0.3wt%), two isocyanide of diphenyl methane of 35g
Catalyst (stannous octoate), the silicone oil of 2g and the carbon black of 5g of acid esters, the foaming agent (water) of 1g and 0.5g.Above-mentioned raw materials are mixed
After be cast in graphite flake upper surface, the foamed polymer 5min at a temperature of 90 DEG C, formed thickness be 0.12mm foamed cotton layer.
The second protective film of graphite flake lower surface is removed, slit coating (slot die) is used in the lower surface of graphene
Mode pressure-sensitive adhesive coating forms the pressure-sensitive adhesive layer that thickness is 10 μm.
Release film is bonded on the surface of pressure-sensitive adhesive layer, obtains 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)：17w/(m.k)；Venting quality：OK；Mist degree：99.2%, transmitance：0.2%；Peeling force
(180°)：450gf.
Embodiment 5
This embodiment offers heat-conducting glue band, structure as shown in Figure 1, include foamed cotton layer, heat-conducting layer, pressure-sensitive from the bottom to top
Glue-line and release film.Specific preparation process is as follows：
Graphite flake is provided as heat-conducting layer, and the upper surface of graphite flake is provided with the first protective film, it is opposite with upper surface
Lower surface is additionally provided with the second protective film；First protective film and the second protective film are PET materials, and thickness is 50 μm；Graphite flake
Thickness is 30 μm, and thermal conductivity factor is 400w/ (m.k).
The first protective film of graphite flake upper surface is removed, cast polyurethane raw material carries out foam in place in graphite flake upper surface
Polymerization, and then form foamed cotton layer；Wherein, urethane raw includes：Polyether polyol (relative molecular weight 1000, the hydroxyl value of 100g
For 110mgKOH/g, the vacuum dehydration at 140 DEG C in advance, moisture is less than 0.3wt%), two isocyanide of diphenyl methane of 35g
Catalyst (stannous octoate), the silicone oil of 2g and the carbon black of 5g of acid esters, the foaming agent (water) of 1g and 0.5g.Above-mentioned raw materials are mixed
After be cast in graphite flake upper surface, the foamed polymer 5min at a temperature of 90 DEG C, formed thickness be 0.12mm foamed cotton layer.
The second protective film of graphite flake lower surface is removed, slit coating (slot die) is used in the lower surface of graphene
Mode pressure-sensitive adhesive coating forms the pressure-sensitive adhesive layer that thickness is 10 μm.
Release film is bonded on the surface of pressure-sensitive adhesive layer, obtains 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)：15w/(m.k)；Venting quality：OK；Mist degree：99.0%, transmitance：0.1%；Peeling force
(180°)：420gf.
Embodiment 6
This embodiment offers heat-conducting glue band, structure as shown in Figure 1, include foamed cotton layer, heat-conducting layer, pressure-sensitive from the bottom to top
Glue-line and release film.Specific preparation process is as follows：
Graphite flake is provided as heat-conducting layer, and the upper surface of graphite flake is provided with the first protective film, it is opposite with upper surface
Lower surface is additionally provided with the second protective film；First protective film and the second protective film are PET materials, and thickness is 50 μm；Graphite flake
Thickness is 8 μm, and thermal conductivity factor is 400w/ (m.k).
The first protective film of graphite flake upper surface is removed, cast polyurethane raw material carries out foam in place in graphite flake upper surface
Polymerization, and then form foamed cotton layer；Wherein, urethane raw includes：Polyether polyol (relative molecular weight 1000, the hydroxyl value of 100g
For 110mgKOH/g, the vacuum dehydration at 140 DEG C in advance, moisture is less than 0.3wt%), two isocyanide of diphenyl methane of 35g
Catalyst (stannous octoate), the silicone oil of 2g and the carbon black of 5g of acid esters, the foaming agent (water) of 1g and 0.5g.Above-mentioned raw materials are mixed
After be cast in graphite flake upper surface, the foamed polymer 5min at a temperature of 90 DEG C, formed thickness be 0.12mm foamed cotton layer.
The second protective film of graphite flake lower surface is removed, slit coating (slot die) is used in the lower surface of graphene
Mode pressure-sensitive adhesive coating forms the pressure-sensitive adhesive layer that thickness is 10 μm.
Release film is bonded on the surface of pressure-sensitive adhesive layer, obtains 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)：12w/(m.k)；Venting quality：OK；Mist degree：99.1%, transmitance：0.2%；Peeling force
(180°)：420gf.
Embodiment 7
This embodiment offers heat-conducting glue band, structure as shown in Figure 1, include foamed cotton layer, heat-conducting layer, pressure-sensitive from the bottom to top
Glue-line and release film.Specific preparation process is as follows：
Graphite flake is provided as heat-conducting layer, and the upper surface of graphite flake is provided with the first protective film, it is opposite with upper surface
Lower surface is additionally provided with the second protective film；First protective film and the second protective film are PET materials, and thickness is 50 μm；Graphite flake
Thickness is 17 μm, and thermal conductivity factor is 1500w/ (m.k).
The first protective film of graphite flake upper surface is removed, cast polyurethane raw material carries out foam in place in graphite flake upper surface
Polymerization, and then form foamed cotton layer；Wherein, urethane raw includes：Polyether polyol (relative molecular weight 1000, the hydroxyl value of 100g
For 110mgKOH/g, the vacuum dehydration at 140 DEG C in advance, moisture is less than 0.3wt%), two isocyanide of diphenyl methane of 40g
Catalyst (stannous octoate), the silicone oil of 1g and the carbon black of 8g of acid esters, the foaming agent (water) of 2.5g and 1.5g.Above-mentioned raw materials are mixed
Graphite flake upper surface is cast in after conjunction, the foamed polymer 5min at a temperature of 90 DEG C forms the foamed cotton layer that thickness is 0.12mm.
The second protective film of graphite flake lower surface is removed, slit coating (slot die) is used in the lower surface of graphene
Mode pressure-sensitive adhesive coating forms the pressure-sensitive adhesive layer that thickness is 10 μm.
Release film is bonded on the surface of pressure-sensitive adhesive layer, obtains 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)：22w/(m.k)；Venting quality：OK；Mist degree：99.2%, transmitance：0.1%；Peeling force
(180°)：410gf.
Embodiment 8
This embodiment offers heat-conducting glue band, structure as shown in Figure 1, include foamed cotton layer, heat-conducting layer, pressure-sensitive from the bottom to top
Glue-line and release film.Specific preparation process is as follows：
Graphite flake is provided as heat-conducting layer, and the upper surface of graphite flake is provided with the first protective film, it is opposite with upper surface
Lower surface is additionally provided with the second protective film；First protective film and the second protective film are PET materials, and thickness is 50 μm；Graphite flake
Thickness is 17 μm, and thermal conductivity factor is 1500w/ (m.k).
The first protective film of graphite flake upper surface is removed, cast polyurethane raw material carries out foam in place in graphite flake upper surface
Polymerization, and then form foamed cotton layer；Wherein, urethane raw includes：Polyether polyol (relative molecular weight 1000, the hydroxyl value of 100g
For 110mgKOH/g, the vacuum dehydration at 140 DEG C in advance, moisture is less than 0.3wt%), two isocyanide of diphenyl methane of 20g
Catalyst (stannous octoate), the silicone oil of 3g and the carbon black of 3g of acid esters, the foaming agent (water) of 0.8g and 0.2g.Above-mentioned raw materials are mixed
Graphite flake upper surface is cast in after conjunction, the foamed polymer 5min at a temperature of 90 DEG C forms the foamed cotton layer that thickness is 0.12mm.
The second protective film of graphite flake lower surface is removed, slit coating (slot die) is used in the lower surface of graphene
Mode pressure-sensitive adhesive coating forms the pressure-sensitive adhesive layer that thickness is 10 μm.
Release film is bonded on the surface of pressure-sensitive adhesive layer, obtains 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)：18w/(m.k)；Venting quality：OK；Mist degree：99.0%, transmitance：0%；Peeling force
(180°)：400gf.
Embodiment 9
This embodiment offers heat-conducting glue band, structure as shown in Figure 1, include foamed cotton layer, heat-conducting layer, pressure-sensitive from the bottom to top
Glue-line and release film.Specific preparation process is as follows：
Graphite flake is provided as heat-conducting layer, and the upper surface of graphite flake is provided with the first protective film, it is opposite with upper surface
Lower surface is additionally provided with the second protective film；First protective film and the second protective film are PET materials, and thickness is 50 μm；Graphite flake
Thickness is 17 μm, and thermal conductivity factor is 1500w/ (m.k).
The first protective film of graphite flake upper surface is removed, cast polyurethane raw material carries out foam in place in graphite flake upper surface
Polymerization, and then form foamed cotton layer；Wherein, urethane raw includes：Polyether polyol (relative molecular weight 1000, the hydroxyl value of 100g
For 110mgKOH/g, the vacuum dehydration at 140 DEG C in advance, moisture is less than 0.3wt%), two isocyanide of diphenyl methane of 20g
The catalyst (stannous octoate) of acid esters, the foaming agent (water) of 0.8g and 0.2g.It is cast on graphite flake after above-mentioned raw materials are mixed
Surface, the foamed polymer 5min at a temperature of 90 DEG C form the foamed cotton layer that thickness is 0.12mm.
The second protective film of graphite flake lower surface is removed, slit coating (sllot is used in the lower surface of graphene
Die) mode pressure-sensitive adhesive coating forms the pressure-sensitive adhesive layer that thickness is 10 μm.
Release film is bonded on the surface of pressure-sensitive adhesive layer, obtains 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)：16w/(m.k)；Venting quality：OK；Mist degree：99.0%, transmitance：0%；Peeling force
(180°)：400gf.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
Simultaneously containing heat-conducting layer, foamed cotton layer and pressure-sensitive adhesive layer in heat-conducting glue band provided by the invention, pressure-sensitive adhesive layer is arranged on
Heat-conducting layer side understands directly heat-conducting layer and foamed cotton layer to be bonded on OLED screen curtain, while play buffering using pressure-sensitive adhesive layer
Protection and the effect of heat dissipation.And the foamed cotton layer in heat-conducting glue band of the present invention be by by urethane raw in heat-conducting layer surface in situ
Foamed polymer is formed, and it is that direct in-situ is combined to be equivalent to heat-conducting layer and foamed cotton layer, does not need to pass through again among the two
Pressure sensitive adhesive bonds, and the pressure that cementation is played among heat-conducting layer and foamed cotton layer has been lacked compared to traditional heat dissipation and buffering safeguard measure
Quick glue.Heat dissipation effect can be significantly improved while buffer protection function is played to OLED screen curtain in this way.At the same time,
Using heat-conducting glue band provided by the invention, without individually setting buffer protection layer again, this can also improve the production of OLED screen curtain
Efficiency, and the pressure sensitive adhesive omitted between heat-conducting layer and foamed cotton layer is also beneficial to economize on resources and energy consumption.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of heat-conducting glue band, which is characterized in that including：
Heat-conducting layer (10)；
Foamed cotton layer (20) is arranged on a side surface of the heat-conducting layer (10), and the foamed cotton layer (20) is by by polyurethane
Raw material is formed in the heat-conducting layer (10) surface in situ foamed polymer；And
Pressure-sensitive adhesive layer (30) is arranged on surface of the heat-conducting layer (10) far from the foamed cotton layer (20) side.
2. heat-conducting glue band according to claim 1, which is characterized in that the thickness of the heat-conducting layer (10) is 10~30 μm；
Preferably, the thermal conductivity factor of the heat-conducting layer (10) is 100~1500w/ (m.k).
3. heat-conducting glue band according to claim 2, which is characterized in that the heat-conducting layer (10) is graphite flake, layers of copper, aluminium foil
Or carbon nanotube copper foil.
4. heat-conducting glue band according to any one of claim 1 to 3, which is characterized in that by weight, the polyurethane
Raw material include 100 parts polyether polyol, 20~40 parts of isocyanates, 0.8~2.5 part of foaming agent and 0.2~1.5 part
Catalyst.
5. heat-conducting glue band according to claim 4, which is characterized in that the molecular weight of the polyether polyol for 800~
2000, hydroxyl value is 80~200mgKOH/g；Preferably, the isocyanates is different for methyl diphenylene diisocyanate, toluene two
It is one or more in cyanate, 1,5- naphthalene diisocyanates and hexamethylene diisocyanate；Preferably, the foaming agent is
It is one or more in water, CFC-11, HCFC-141b, pentamethylene and dichloromethane；Preferably, the catalyst is sub- for octanoic acid
It is one or more in tin, triethylamine and dibutyltin diacetate.
6. heat-conducting glue band according to claim 4, which is characterized in that by weight, the urethane raw further includes 1
~3 parts of foam stabiliser and 3~8 parts of heat filling；Preferably, the foam stabiliser is silicone oil and/or alkyl sulfonic acid
Salt；Preferably, the heat filling is one or more in carbon black, carbon nanotube and graphene.
7. heat-conducting glue band according to any one of claim 1 to 3, 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.
8. heat-conducting glue band according to any one of claim 1 to 3, which is characterized in that the heat-conducting glue band further include from
Type film (40), the release film (40) are arranged on surface of the pressure-sensitive adhesive layer (30) far from the foamed cotton layer (20) side.
9. a kind of production method of heat-conducting glue band described in any item of the claim 1 to 8, which is characterized in that including following step
Suddenly：
Heat-conducting layer (10) is provided；
The foam in place polymerization of urethane raw is carried out on a side surface of the heat-conducting layer (10), forms foamed cotton layer (20)；
Pressure-sensitive adhesive coating is to form pressure-sensitive adhesive layer on surface of the heat-conducting layer (10) far from the foamed cotton layer (20) side
(30), and then the heat-conducting glue band is formed.
10. production method according to claim 9, which is characterized in that the heat-conducting layer (10) is graphite flake, is provided described
In the step of heat-conducting layer (10), the upper surface of the heat-conducting layer (10) is additionally provided with the first protective film, opposite with the upper surface
Lower surface be additionally provided with the second protective film；
The step of forming the foamed cotton layer (20) includes：First protective film of the heat-conducting layer (10) upper surface is removed,
Heat-conducting layer (10) upper surface pours into a mould the urethane raw and carries out foam in place polymerization, and then forms the foamed cotton layer
(20)；
The step of forming the pressure-sensitive adhesive layer (30) includes：Second protective film of the heat-conducting layer (10) lower surface is removed,
The pressure sensitive adhesive is coated in the heat-conducting layer (10) lower surface to form the pressure-sensitive adhesive layer (30).
11. production method according to claim 9, which is characterized in that after the step of forming the pressure-sensitive adhesive layer (30),
The production method is additionally included on surface of the pressure-sensitive adhesive layer (30) far from the foamed cotton layer (20) side and sets release film
(40) the step of.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711466366.8A CN108219698A (en) | 2017-12-28 | 2017-12-28 | Heat-conducting glue band and preparation method thereof |
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| CN201711466366.8A CN108219698A (en) | 2017-12-28 | 2017-12-28 | Heat-conducting glue band and preparation method thereof |
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| CN110137367A (en) * | 2019-05-31 | 2019-08-16 | 维沃移动通信有限公司 | Display screen and terminal device |
| CN111234721A (en) * | 2020-01-17 | 2020-06-05 | 新纶科技（常州）有限公司 | Heat dissipation buffer film |
| CN111808256A (en) * | 2020-07-31 | 2020-10-23 | 湖南省普力达高分子新材料股份有限公司 | High-density conductive polyurethane foam, preparation method thereof and adhesive tape |
| CN113122157A (en) * | 2021-05-13 | 2021-07-16 | 广东亚龙兴新材料有限公司 | Copper foil buffer adhesive tape for flexible screen and preparation method thereof |
| CN113516924A (en) * | 2021-05-19 | 2021-10-19 | 京东方科技集团股份有限公司 | Display module and electronic equipment |
| WO2021243652A1 (en) * | 2020-06-03 | 2021-12-09 | 湖南省普瑞达内装材料有限公司 | Environmentally-friendly thermally conductive polyurethane foam, preparation method therefor, and adhesive tape |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110137367A (en) * | 2019-05-31 | 2019-08-16 | 维沃移动通信有限公司 | Display screen and terminal device |
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| CN113122157A (en) * | 2021-05-13 | 2021-07-16 | 广东亚龙兴新材料有限公司 | Copper foil buffer adhesive tape for flexible screen and preparation method thereof |
| CN113516924A (en) * | 2021-05-19 | 2021-10-19 | 京东方科技集团股份有限公司 | Display module and electronic equipment |
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Application publication date: 20180629 |