CN107011854A - A kind of conductive graphite composite membrane and preparation method thereof - Google Patents
A kind of conductive graphite composite membrane and preparation method thereof Download PDFInfo
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- CN107011854A CN107011854A CN201710147211.1A CN201710147211A CN107011854A CN 107011854 A CN107011854 A CN 107011854A CN 201710147211 A CN201710147211 A CN 201710147211A CN 107011854 A CN107011854 A CN 107011854A
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
- B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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- 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
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- C08K2201/017—Additives being an antistatic agent
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- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention discloses a kind of conductive graphite composite membrane and preparation method thereof, composite membrane includes base material, coating and conduction graphite film, coating is arranged on a side surface of base material, and its viscosity is less than the viscosity of adhesive and peeling force of the peeling force more than the unit area of mould release of its unit area；Conduction graphite film is pressed together on the surface of dorsad base material side of coating.Preparation method comprises the following steps：The coating of thickness needed for being coated on a side surface of base material；By conduction graphite film calendering on a side surface of the dorsad base material of counterdie floating coat.Due to the existing stripping of coating and gluing function; one layer of coating just can replace the adhesive layer in parting agent layer and diaphragm in existing mould release membrance; one layer of base material replaces the base material in existing mould release membrance and in diaphragm; the composite membrane is set only to be formed through one of coating technique; just film cutting process together can be directly entered down; so as to shorten the preparation process of composite membrane, reduce by one layer of auxiliary material, reduction prepares cost.
Description
Technical field
The invention belongs to the technical field of Heat Conduction Material, and in particular to a kind of conductive graphite composite membrane and preparation method thereof.
Background technology
High heat conduction graphite film, also known as artificial synthesized graphite film, because of its excellent heat conductivity, corrosion resistance and electric conductivity, quilt
Electronic product is widely used in be radiated.But in order to further improve the density, thermal conductivity and ductility of conduction graphite film,
Conduction graphite film is also needed to through the lower calendering formation of high pressure effect, it is necessary to which a kind of counterdie is used as carrier in calender line；Together
When, it is necessary to according to the specific size of electronic product and require to carry out film cut when conduction graphite film is applied to electronic product radiating
Sequence.
The calendering of conduction graphite film of the prior art and film cutting process, as shown in figure 1, using mould release membrance as counterdie, the bottom
Film includes PET base material 1 and is coated on base material 1 silicon layer 4, and conduction graphite film 3 is pressed together on silicon layer 4 by calender；
Diaphragm is set in conduction graphite film 3 dorsad a side surface of silicon layer 4 again afterwards, and diaphragm is by PET base material 1 and is coated in this
Layer of silica gel 5 on the side surface of base material 1 one, is bonded conduction graphite film 3 and diaphragm by layer of silica gel 5；Again by mould release membrance from leading
Torn on hot graphite film 3, form conduction graphite film 3 and the composite membrane of diaphragm；Finally machine is cut using film to cut the composite membrane
Into the sheet material of required size and dimension.
But, above-mentioned composite membrane is during film is cut, due to the caking property of silica gel, and layer of silica gel 5 understands leading for tear-away portion
Hot graphite film 3, the edge for causing film to cut rear composite membrane occurs warping or flash phenomenon, influences the subsequent treatment process of composite membrane,
Also result in the yield rate reduction of conduction graphite film；Meanwhile, during forming above-mentioned composite membrane, the support of mould release membrance is first needed,
That subsequently goes back tears mould release membrance, causes whole preparation technology complicated, the high defect of cost.
The content of the invention
Therefore, the technical problems to be solved by the invention are to overcome conduction graphite film in the prior art and counterdie formation
Composite membrane, the edge of composite membrane occurs warping or flash phenomenon after film is cut, and composite membrane preparation technology is complicated and cost is high
The problem of.
Therefore, the present invention provides a kind of conductive graphite composite membrane, including
Base material；
Coating, is arranged on a side surface of the base material, and its viscosity is less than sticky and its unit area of adhesive
Peeling force is more than the peeling force of the unit area of mould release；
Conduction graphite film, is pressed together on the surface of dorsad described base material side of the coating.
Preferably, above-mentioned conductive graphite composite membrane, the coating is using the mixed of the mould release and the adhesive
The film of compound formation.
Preferably, above-mentioned conductive graphite composite membrane, the coating includes at least one first area, and with described the
The second area that one region is disposed adjacent；It is provided with the first area in the mould release, the second area provided with described
Adhesive.
It is further preferred that above-mentioned conductive graphite composite membrane, at least one described first area is located at outside, it is described
Second area is located in the first area, and the first area is in the surrounding position of the conductive graphite film edge
Place.
The present invention provides a kind of preparation method of conductive graphite composite membrane, comprises the following steps：
S2：The coating of thickness needed for being coated on a side surface of base material, to form counterdie；
S3：By conduction graphite film calendering on a side surface of the dorsad base material of counterdie floating coat, to form composite membrane.
Preferably, the preparation method of above-mentioned conductive graphite composite membrane, in S2 steps, is coated in a side surface of base material
Mould release and adhesive are according to the mixed liquor after the cooperation of required ratio, to form the coating.
Preferably, auxiliary agent, the auxiliary agent are also included in the preparation method of above-mentioned conductive graphite composite membrane, the mixed liquor
For the mixture of any one in antistatic additive, defoamer, antioxidant, or any two kinds or three kinds；
The quality of the mixed liquor is 100 parts, and the quality of the mould release is 5 parts -70 parts, and the quality of the adhesive is
5-70 parts；Quality shared by the auxiliary agent is 1 part -7 parts, and remaining is solvent.
Preferably, the preparation method of above-mentioned conductive graphite composite membrane, before S2 steps, in addition to
S1：According to predetermined pattern, at least the one of pattern needed for preparing or be partitioned on a side surface of the base material
Individual first area and at least one second area；
In S2 steps, the mould release and gluing of thickness needed for being coated respectively in the first area and in second area
Agent, to form the coating.
It is further preferred that the preparation method of above-mentioned conductive graphite composite membrane, in S2 steps, in advance in mould release and
Auxiliary agent is separately added into adhesive, the auxiliary agent is any one in antistatic additive, defoamer, antioxidant, or arbitrarily
Two kinds or three kinds of mixture；The mould release and the adhesive for being blended with auxiliary agent again are coated in firstth area respectively
In domain and second area.
Preferably, the preparation method of above-mentioned conductive graphite composite membrane, the thickness of the coating is 1um-15um；And/or
The base material is any one in PET, PE, OPP, BOPET, BOPP, PC, PMMA, PS, ABS, PTFE；And/or
The mould release is any one in polyvinyl alcohol, silicone oil, silicone grease, emulsification paraffin wax, or two kinds or more of
Mixture；And/or
The adhesive is silica gel and/or acrylate.
The technical scheme that the present invention is provided, has the following advantages that：
1. the conductive graphite composite membrane that the present invention is provided, including base material, coating and conduction graphite film, its floating coat are set
On a side surface of the base material, its viscosity is less than the viscosity of adhesive and the peeling force of its unit area is more than mould release
The peeling force of unit area；Conduction graphite film is pressed together on the surface of dorsad described base material side of the coating.
The composite membrane of this structure, because the viscosity of the coating between base material and conduction graphite film is less than the viscosity of adhesive,
And the peeling force of its unit area is more than the peeling force of the unit area of mould release so that the peeling force of the existing mould release of the coating
Function, the viscosity for having adhesive again can be using one layer of coating come instead of the parting agent layer in existing mould release membrance and protection
Adhesive layer in film, one layer of base material replaces the base material in base material and diaphragm in existing mould release membrance so that the composite membrane
Need to only be formed by one of coating technique, just can be directly entered down one film cutting process, without as the need for existing by two
Dyestripping process of the road coating processes with together with, conduction graphite film is transferred on diaphragm to form composite membrane, can be carried out
Lower film cutting process together, so as to shorten the preparation process of composite membrane, while reducing by one layer of auxiliary material (parting agent layer or adhesive
Layer), the cost of the compound film preparation of reduction.In addition, during film cutting process, because the viscosity of coating is smaller, it is to heat conduction stone
The adsorption of ink film is also smaller, after film is cut so that flash occurs in composite membrane edge or the phenomenon of a drum greatly reduces,
So as to improve the yield rate that film cuts rear composite membrane.
2. the conductive graphite composite membrane that the present invention is provided, the coating is using the mixed of the mould release and the adhesive
The film of compound formation, the content of mould release and adhesive in coating according to actual needs, can be adjusted at any time, in order to adjust
Peeling force in the viscosity and separate area of coating.
3. the conductive graphite composite membrane that the present invention is provided, the coating includes at least one first area, and with it is described
The second area that first area is disposed adjacent；It is provided with the first area in the mould release, the second area and is provided with institute
Adhesive is stated, is easy to the area by changing different zones, to adjust the peeling force in viscosity and the separate area needed for coating.
4. the conductive graphite composite membrane that the present invention is provided, at least one described first area is located at outside, described second
Region is located in the first area, and the first area is at the surrounding position of the conductive graphite film edge.
When film cuts composite membrane, the parting agent layer at composite membrane marginal position, its absorption affinity very little to conduction graphite film enters one
After step make it that composite membrane envelope is cut, the edge of composite membrane has been not in the phenomenon of drum or flash.
5. the present invention provides a kind of preparation method of conductive graphite composite membrane, comprise the following steps：S2：In the side of base material
The coating of thickness needed for being coated on surface, to form counterdie；S3：Conduction graphite film is rolled into the dorsad base material in counterdie floating coat
A side surface on, to form composite membrane.
This preparation method, the coating processes that need to only carry out once can just prepare above-mentioned composite membrane, and the composite membrane is just
Lower film cutting process together can directly be entered, without as passing through dyestripping work of the twice coating processes with together with the need for existing
Sequence, conduction graphite film is transferred on diaphragm, to form composite membrane, film cutting process together can be carried out down, so as to contract
The preparation process of short composite membrane, while reduce by one layer of auxiliary material (parting agent layer or adhesive layer), the compound film preparation of reduction into
This.
6. the present invention provides a kind of preparation method of conductive graphite composite membrane, before S2 steps, in addition to S1：According to pre-
If pattern, at least one first area and at least one of pattern needed for preparing or be partitioned on a side surface of the base material
Individual second area；In S2 steps, respectively in the first area and second area in coat needed for thickness mould release and
Adhesive, to form the coating.In the method, default pattern is formed on base material by elder generation, is sprayed afterwards further according to pattern
The parting agent layer and gluing oxidant layer of thickness needed for upper so that conduction graphite film absorption affinity suffered on coating and peeling force are more
Regularization.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the preparation technology of conductive graphite composite membrane in the prior art；
Fig. 2 is the structural representation of offer conductive graphite composite membrane in the embodiment of the present invention 1；
Fig. 3 is the first structural representation of the coating of conductive graphite composite membrane in Fig. 2；
Fig. 4 is second of structural representation of the coating of conductive graphite composite membrane in Fig. 2；
Fig. 5 is the third structural representation of the coating of conductive graphite composite membrane in Fig. 2；
Fig. 6 is the 4th kind of structural representation of the coating of conductive graphite composite membrane in Fig. 2.
Description of reference numerals：
1- base materials；2- coatings；21- first areas；22- second areas；3- conduction graphite films；4- silicon layers；5- layer of silica gel.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can just be combined with each other into conflict.
Embodiment 1
The present embodiment provides a kind of conductive graphite composite membrane, as shown in Fig. 2 including base material 1, coating 2 and conductive graphite
Film 3.Wherein, coating 2 is arranged on a side surface of base material 1, viscosity of its viscosity less than adhesive and the stripping of its unit area
From the peeling force for the unit area that power is more than mould release；Conduction graphite film 3 is pressed together on the surface of the side of dorsad base material 1 of coating 2
On.
Above-mentioned coating 2 is that, using mould release and adhesive, the film of the mixture formation of auxiliary agent, the thickness of film is optimal
Ground is controlled in 3um, or 1um, 2um, 4um, 5um, 8um, 9um, 12um, 15um, is preferably controlled in the range of 1um-15um, when
It can also be other sizes so according to client's actual demand, but unsuitable blocked up, prevent coating 2 to the sticky mistake of conduction graphite film 3
Greatly, or unit area peeling force it is excessive, influence composite membrane performance.
Wherein, mould release is preferably silicone oil, and adhesive is preferably silica gel, and auxiliary agent includes antistatic additive, defoamer, anti-oxidant
Agent；Such as antistatic additive is silester, and defoamer is polyethers defoamer, and antioxidant is antioxidant 1010.Base material 1 is excellent
Elect resin material, such as PET materials as.
Composite membrane in this embodiment, because the viscosity of the coating 2 between base material 1 and conduction graphite film 3 is less than silica gel
Viscosity, and its unit area peeling force be more than silicone oil unit area peeling force so that the coating 2 is both with silicone oil
Peeling force function, the viscosity for having silica gel again can be using one layer of coating 2 come instead of the silicon layer in existing mould release membrance and guarantor
Layer of silica gel in cuticula, one layer of base material 1 replaces the base material 1 in base material 1 and diaphragm in existing mould release membrance so that this is combined
Film need to only be formed by one of coating technique, just be directly entered down film cutting process together, without as passing through two the need for existing
Dyestripping process of the road coating processes with together with, conduction graphite film 3 is transferred on diaphragm to form composite membrane, can be carried out
Lower film cutting process together, so that shorten the preparation process of composite membrane, while reduce by one layer of auxiliary material (silicon layer or layer of silica gel),
The cost of the compound film preparation of reduction.In addition, during film cutting process, because the viscosity of coating 2 is smaller, it is to conduction graphite film
3 adsorption is also smaller, after film is cut so that flash occurs in composite membrane edge or the phenomenon of a drum greatly reduces, from
And improve the yield rate that film cuts rear composite membrane.In addition, improved by adding auxiliary agent pressing after conduction graphite film 3 on counterdie
Performance, for example, avoid the occurrence of foaming phenomena, or electrostatic phenomenon etc. occur.
As interchangeable embodiment, above-mentioned mould release can also be appointing in polyvinyl alcohol, silicone grease, emulsification paraffin wax
Meaning is a kind of, or the mixture in polyvinyl alcohol, silicone grease, emulsification paraffin wax in any two kinds or three kinds, such as polyvinyl alcohol with
The mixture of emulsified wax, or and for example, the mixture of silicone grease and silicone oil；Or for another example, emulsified wax and silicone oil, polyvinyl alcohol
Mixture.The proportioning of mixture is adjusted according to the actual requirements.
As the deformation of adhesive, adhesive can also be acrylate, or other glue, need to only have certain viscous
Property, conduction graphite film 3 can be bonded on counterdie.
As interchangeable embodiment, the material of base material 1 can also for PE, OPP, BOPET, BOPP, PC, PMMA, PS,
ABS, PTFE etc..
As deformation, in above-mentioned mixture, auxiliary agent can also be not provided with, coating 2 need to use mould release and adhesive
Mixed liquor formed.
As the deformation of coating 2, coating 2 may be used also in addition to being formed using the mixed liquor of mould release, adhesive and auxiliary agent
To be formed using other modes.For example, as shown in figure 3, coating 2 include multiple first areas 21, and with the phase of first area 21
The second area 22 that neighbour is set；It is provided with first area 21 in above-mentioned mould release, second area 22 and is provided with above-mentioned adhesive.
Preferably, first area 21 is grid form, and second area 22 is also grid form, the area of first area 21 and second
Domain 22 is intersected setting so that mould release is uniformly distributed compartment of terrain with adhesive on coating 2, so that 2 pairs of coating is led
The absorption affinity and peeling force of hot graphite film 3 are suitable.Most preferably, first area 21 and second area 22 are of uniform thickness, and are used as change
Shape, the thickness of first area 21 is more than the thickness of second area 22 so that the release effect of mould release plays leading make in coating 2
With；When film cuts composite membrane, suction-operated of the coating 2 to conduction graphite film 3 is relatively weak, further avoids the occurrence of flash or rises
Drum phenomenon.Or the thickness of first area 21 is less than the thickness of second area 22 so that the viscosity of adhesive plays a leading role, but
Generally the viscosity of coating 2 is less than the viscosity of adhesive, and the peeling force of unit area is more than the unit area peeling force of mould release.
And for example, as shown in figure 4, in the insertion of first area 21 second area 22, two neighboring first area 21 is from overall
The upper area for causing first area 21 is more than the area of second area 22；Or as shown in figure 5, in the horizontal direction, elder generation is in base material 1
On alternately form first area 21 and second area 22, two regions are grown up bar shaped, or as shown in fig. 6, along vertical side
Upwards, first area 21 and second area 22 are alternately formed on base material 1, two regions are also strip.
Most preferably, a first area 21 is located at outside, all second areas 22 are located in the first area 21, and
The first area 21 is at the surrounding position at the edge of conduction graphite film 3 so that what the edge of conduction graphite film 3 was adsorbed by counterdie
Gluing power is smaller, its leading role of release effect, then after film is cut, and drum phenomenon hair without flash phenomenon or is not played in the edge of composite membrane
It is raw.The second area 22 in first area 21 applies gluing power to conduction graphite film 3 simultaneously.Such as coating 2 is returned in one
Font, or annular, outside are first areas 21, and inner side is second area 22.Or first area 21 and second area 22
In other shapes, it is designed according to the actual requirements, the peeling force of the best edge of coating 2 plays a leading role, middle gluing
Property plays a leading role.
Embodiment 2
The present embodiment provides a kind of preparation method of the conductive graphite composite membrane provided in embodiment 1, comprises the following steps：
S2：The silicone oil, the silica gel that quality is 30 parts, the auxiliary agent that quality is 5 parts that quality is 40 parts are mixed into solvent, with
Form mixed liquor；Wherein auxiliary agent is mainly defoamer and antistatic additive, and the mass ratio of the two is 6:1；Existed using ink-jet printer
The thick mixed liquors of 3um are sprayed on the top surface of PET base material 1, with the formation counterdie of PET base material 1 after liquid solidification to be mixed；
S3：Using to roll calendar, on the top surface that conduction graphite film 3 is pressed together on to counterdie floating coat 2, that is, formed multiple
Close film.
The preparation method of composite membrane in this embodiment, because coating 2 both has certain viscosity and peeling force, is only needed
Thickness coatings 2 needed for being coated on base material 1, then conduction graphite film 3 is pressed together on forms composite membrane thereon, namely only need progress
Coating processes once can just prepare above-mentioned composite membrane, and the composite membrane can just be directly entered down film cut together
Skill, without as passing through dyestripping process of the twice coating processes with together with the need for existing, conduction graphite film 3 is transferred into diaphragm
On, to form composite membrane, film cutting process together can be carried out down, so as to shorten the preparation process of composite membrane, is reduced simultaneously
One layer of auxiliary material (silicon layer 4 or layer of silica gel 5), the cost of the compound film preparation of reduction；In addition, also avoid during film is cut, it is multiple
There is flash or plays drum phenomenon in the edge for closing film.
As interchangeable embodiment, auxiliary agent can also include antistatic agent, antioxidant, the mass fraction shared by it
It can also be 1 part, 2 parts, 3 parts, 4 parts, 6 parts, 7 parts etc., the mass fraction of auxiliary agent is preferably controlled into the scope at 1 part -7 parts
It is interior.
As the deformation of silicone oil and the mass fraction of silica gel, the mass fraction of silicone oil can also for 10 parts, 20 parts, 30 parts,
50 parts, 60 parts, 70 parts etc., and the mass fraction of silica gel can also for 5 parts, 10 parts, 15 parts, 18 parts, 20 parts, 25 parts, 35 parts,
45 parts, 50 parts, 60 parts, 70 parts etc., best, the peeling force of coating 2 accounts for leading role, it is to avoid film is combined film edge after cutting and risen
The phenomenon of drum or flash occurs.It is of course also possible to the mass fraction of silica gel and silicone oil be adjusted according to actual needs, to adjust painting
The viscosity or peeling force of layer 2.As deformation, solvent can also be hexamethylene, acetone, toluene.
As deformation, auxiliary agent can also be the mixture or antistatic additive of antioxidant, either oxidant and defoamer
With the mixture of oxidant, or antioxidant, defoamer, the mixture of antistatic additive three.
As deformation, in S1 steps, the thickness of coating 2 can also for 1um, 1.5um, 2um, 4um, 5um, 6um, 7um,
8um, 9um, 10um, 11um, 12um, 13um, 14um, 15um etc., are preferably controlled in the range of 1um-15um, but also may be used
With the actual demand according to client, to adjust the thickness of coating 2.
As deformation, in S2 steps, base material 1 can also be PE, OPP, BOPET, BOPP, PC, PMMA, PS, ABS, PTFE
Any one in base material 1.
As the deformation of silicone oil, silicone oil can be replaced by other mould releases, for example polyvinyl alcohol, silicone grease, emulsification paraffin wax
In any one, or the mixture in polyvinyl alcohol, silicone grease, emulsification paraffin wax in any two kinds or three kinds, such as poly- second
The mixture of enol and emulsified wax, the mass ratio of the two is 1:2；Or and for example, the mixture of silicone grease and silicone oil, the matter of the two
Amount is than being 1:4；Or for another example, emulsified wax and silicone oil, the mixture of polyvinyl alcohol, the mass ratio of three is 1:3:5, if release
Agent is used after two or more material mixing, and the proportioning of various mould releases can be adjusted according to the actual requirements in the mixture
It is whole, it is not especially limited.
As the deformation of silica gel, silica gel can be replaced by other adhesives, such as acrylate, or acrylate and silicon
The mixture (its proportioning is not especially limited) of glue, or other glue, need to only have certain viscosity, can be by conduction graphite film
3 are bonded on counterdie.
Embodiment 3
The present embodiment provides a kind of preparation method of conductive graphite composite membrane, its compared with the preparation method in embodiment 2,
What it was present differs only in：The mode of the formation of coating 2 is different, and mould release, adhesive, auxiliary agent and the base material 1 used is all
As in Example 1, specifically, the preparation method, comprises the following steps：
S1：According to predetermined pattern, multiple first areas 21 of pattern needed for being partitioned on the top surface of base material 1 and/or
Multiple second areas 22, such as, as shown in figure 3, first area 21 is grid form, second area 22 is also grid form, first
Region 21 and second area 22 intersect settings, and whole pattern is latticed for black and white；
S2：Be separately added into auxiliary agent in mould release and adhesive in advance, using ink-jet printer be blended with auxiliary agent from
Type agent and adhesive are coated in first area 21 and second area 22 respectively so that the thickness of the mould release in first area 21 with
The consistency of thickness of adhesive in second area 22, such as 5um, to form the coating 2 that 5um is thick；So that mould release and adhesive
Compartment of terrain is uniformly distributed on coating 2；
S3:Using to roll calendar, on the top surface that conduction graphite film 3 is pressed together on to counterdie floating coat 2, that is, formed multiple
Close film.
In the preparation method of the composite membrane of this embodiment, the viscosity and unit area according to required for conduction graphite film 3
Peeling force, the pattern of pre-designed mould release and adhesive present position marks off figure further according to the pattern on base material 1
Two regions in case, come two regions are carried out to apply mould release and adhesive respectively so that the coating 2 of formation is to conductive graphite
The active force that film 3 is applied can preferably reach default degree, further improve the performance of counterdie in composite membrane.
As deformation, as shown in figure 4, in pattern in the insertion of second area 22 first area 21, two neighboring first area
21 are spaced, and generally cause the area of second area 22 to be more than the area of first area 21；Or as shown in Figure 5 and Figure 6, figure
Case is the vertical bar shape that vertical black and white is separated by, or pattern is the horizontal stripe shape that horizontal black and white is separated by.
Most preferably, pattern is annular, either three-back-shaped or other shapes, and at least one first area 21 is located at
Outside, all second areas 22 are located in the first area 21, and the first area 21 is in the surrounding at the edge of conduction graphite film 3
At position, such as width of the first area 21 is 1mm, 5mm, 10mm etc. so that the edge coating 2 of conduction graphite film 3
Gluing power very little, release to play a leading role, then after film is cut, the edge of composite membrane is without flash phenomenon or rises and rouses phenomenon.
Pattern can also be other shapes, can be designed according to the actual requirements, and the peeling force of the best edge of coating 2 plays leading make
With the gluing of middle plays a leading role.
As deformation, when first area 21 and the second area 22 of above-mentioned pattern are prepared on base material 1, it can also pass through
Chemical etching mode is formed on a side surface of base material 1, or by the way that pattern is prepared into mould, is preparing the process of base material 1
In, the pattern is directly prepared by mould.
As the deformation of above-described embodiment 2 and embodiment 3, it can also be coated using other spraying equipments on base material 1
The mixed liquor stated either mould release or adhesive, such as spray gun.Above-mentioned can also be by other press devices to roll calendar
Substitute, such as to flat board pressure apparatus.
As deformation, coating 2 is painted only with a kind of material, only needs the viscosity of the material to be less than the viscosity of adhesive, and
The peeling force of its unit area is more than the peeling force of the unit area of mould release.Directly this material is coated on the surface of base material 1, nothing
Above-mentioned pattern need to be set.
In a word, above-mentioned compound membrane preparation method, is included in the coating 2 of thickness needed for being coated on a side surface of base material 1,
To form counterdie；Conduction graphite film 3 is rolled on a side surface of the dorsad base material 1 of counterdie floating coat 2, to form composite membrane
.
Above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.For institute
For the those of ordinary skill in category field, other various forms of changes or change can also be made on the basis of the above description
It is dynamic.Among the protection domain of the invention.
Claims (10)
1. a kind of conductive graphite composite membrane, it is characterised in that including
Base material (1)；
On coating (2), the side surface for being arranged on the base material (1), its viscosity is less than the viscosity of adhesive and its unit area
Peeling force be more than mould release unit area peeling force；
Conduction graphite film (3), is pressed together on the surface of dorsad described base material (1) side of the coating (2).
2. conductive graphite composite membrane according to claim 1, it is characterised in that：The coating (2) is using described release
The film of agent and the mixture formation of the adhesive.
3. conductive graphite composite membrane according to claim 1, it is characterised in that：The coating (2) include at least one the
One region (21), and the second area (22) being disposed adjacent with the first area (21)；Set in the first area (21)
Have and the adhesive is provided with the mould release, the second area (22).
4. conductive graphite composite membrane according to claim 3, it is characterised in that：At least one described first area (21)
Positioned at outside, the second area (22) is located in the first area (21), and the first area (21) is in institute
At the surrounding position for stating conduction graphite film (3) edge.
5. a kind of preparation method of conductive graphite composite membrane as any one of claim 1-4, it is characterised in that including
Following steps：
S2：The coating (2) of thickness needed for being coated on a side surface of base material (1), to form counterdie；
S3：It is compound to be formed by conduction graphite film (3) calendering on a side surface of the dorsad base material (1) of counterdie floating coat (2)
Film.
6. the preparation method of conductive graphite composite membrane according to claim 5, it is characterised in that
In S2 steps, the mixing after mould release and adhesive coordinate according to required ratio is coated in a side surface of base material (1)
Liquid, to form the coating (2).
7. the preparation method of conductive graphite composite membrane according to claim 6, it is characterised in that also wrapped in the mixed liquor
Include auxiliary agent, the auxiliary agent is any one in antistatic additive, defoamer, antioxidant, or any two kinds or three kinds
Mixture；
The quality of the mixed liquor is 100 parts, and the quality of the mould release is 5 parts -70 parts, and the quality of the adhesive is 5-70
Part；Quality shared by the auxiliary agent is 1 part -7 parts, and remaining is solvent.
8. the preparation method of conductive graphite composite membrane according to claim 5, it is characterised in that
Before S2 steps, in addition to
S1：According to predetermined pattern, at least one of pattern needed for preparing or be partitioned on a side surface of the base material (1)
First area (21) and at least one second area (22)；
In S2 steps, the mould release of thickness needed for being coated respectively in the first area (21) and in second area (22) and
Adhesive, to form the coating (2).
9. the preparation method of conductive graphite composite membrane according to claim 8, it is characterised in that
In S2 steps, be separately added into auxiliary agent in mould release and adhesive in advance, the auxiliary agent be antistatic additive, defoamer,
Any one in antioxidant, or any two kinds or three kinds of mixture；The mould release of auxiliary agent is blended with again
It is coated in respectively in the first area (21) and second area (22) with the adhesive.
10. the preparation method of the conductive graphite composite membrane according to any one of claim 5-9, it is characterised in that
The thickness of the coating (2) is 1um-15um；And/or
The base material (1) is any one in PET, PE, OPP, BOPET, BOPP, PC, PMMA, PS, ABS, PTFE；And/or
The mould release is any one in polyvinyl alcohol, silicone oil, silicone grease, emulsification paraffin wax, or two kinds or more of mixing
Thing；And/or
The adhesive is silica gel and/or acrylate.
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| CN108203568A (en) * | 2018-01-30 | 2018-06-26 | 昆山国显光电有限公司 | A kind of release membrane preparation method, release film and Optical transparent adhesive |
| CN108948399A (en) * | 2018-09-29 | 2018-12-07 | 江苏墨泰新材料有限公司 | polymer-graphite composite membrane and its preparation method and application |
| CN112388732A (en) * | 2020-10-23 | 2021-02-23 | 东莞艾塔极新材料科技有限公司 | Die cutting method convenient to detect |
| CN113903870A (en) * | 2021-09-09 | 2022-01-07 | 清华大学 | Composite film, method for producing same, and electronic device |
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| CN113903870A (en) * | 2021-09-09 | 2022-01-07 | 清华大学 | Composite film, method for producing same, and electronic device |
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