CN114479149A - Calendering release film for graphene carrier and preparation method thereof - Google Patents
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 58
- 238000003490 calendering Methods 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 45
- 239000011248 coating agent Substances 0.000 claims abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 229920002545 silicone oil Polymers 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 10
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920002050 silicone resin Polymers 0.000 claims abstract description 10
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000741 silica gel Substances 0.000 claims abstract description 7
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims abstract description 6
- 239000003054 catalyst Substances 0.000 claims abstract description 5
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 5
- 230000003197 catalytic effect Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 13
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000004132 cross linking Methods 0.000 claims description 5
- 238000003851 corona treatment Methods 0.000 claims description 4
- -1 graphite alkene Chemical class 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 229920002799 BoPET Polymers 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 2
- 239000001257 hydrogen Substances 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000002318 adhesion promoter Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 239000012752 auxiliary agent Substances 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0209—Multistage baking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
- B05D7/04—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber to surfaces of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of 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; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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Abstract
The invention relates to the technical field of release films, and discloses a calendering release film for a graphene carrier and a preparation method thereof, wherein the calendering release film comprises a substrate layer and a release layer adhered to the surface of the substrate layer, and is characterized in that coating liquid of the release layer is prepared from the following components in parts by weight: after 28-50 parts of phenyl silicone oil, 28-35 parts of silica gel resin and 1-3 parts of methyl silicone resin are mixed, 35-43 parts of organic solvent is added to be fully stirred and dispersed, and finally, 1-3 parts of hydrogen-containing silicone oil, 2-3 parts of adhesion promoter and 2-3 parts of platinum catalytic promoter are added to be integrally mixed to obtain the catalyst. The release film is thick and has good affinity with the surface of graphene, the release film with one thickness can be suitable for pressing graphene with different thicknesses, and the release film has good adsorption force on the graphene.
Description
Technical Field
The invention relates to the technical field of coating and forming of graphene, in particular to a calendering release film for a graphene carrier and a preparation method thereof.
Background
With the acceleration of the industrialization process, the electronic product can conduct heat quickly in the direction of requiring quick heat dissipation and quick electric conduction, which becomes the hard requirement of the electronic product. In recent years, in the field of electronics, due to the development of integration technology and assembly technology, the volume of electronic components has been reduced by tens of thousands of times, and thus, there is a demand for a material having a small volume and high thermal conductivity. Especially in the development of modern mobile communication and 5G base stations, the requirements for ultra-high heat conduction and electric conduction of electronic products and materials are increasingly strengthened. Thus, some product suppliers in the upstream are continuously developing and seeking new materials to meet the needs of customers. In the field of electronic auxiliary materials, the requirements for auxiliary materials are also becoming quite fine. Different manufacturers search for new materials, and many companies dig deeply on the original graphite material to develop a heat conduction material, namely graphene, which is more excellent than graphite. Due to the specialization of graphene in the manufacturing process, natural graphite powder needs to be blended, and other materials need to be added for liquefaction. The graphene sheet is changed into slurry, the slurry is conveniently coated on a carrier, the thickness required by coating can be adjusted according to needs, and then the graphene sheet is obtained through a series of processes. In order to achieve the effect of surface gloss, the graphene sheet needs to be subjected to calendaring and thickness-equalizing process treatment, a carrier and a release film need to be used in the process treatment, and the release film needs to be effectively combined with the graphene sheet due to the process requirement. The graphene manufacturing process is completed on one line, so that the requirements on more performances of the carrier and the calendering release film are met. With the rapid improvement of the heat dissipation effect, a plurality of graphite manufacturers begin to research the heat conduction of ultra-thick graphene, the common graphene is a process for directly attaching a formed graphene coil stock to a special release film through a calendaring machine for calendaring after sintering, the thickness of the graphene is difficult to improve due to the characteristic of the graphene, the ultra-thick graphene in the market is formed by compounding two layers of graphene, and the process is complex and high in cost. Aiming at the graphene products with ultra-thickness in the current market (more than 100 UM), most of the release film products in the current market are silicone oil-property coating release films, the thickness of the release films is about 1 mu m, the release films are too thin and can not be pressed easily to release films, and the graphene coated on the release films has shrinkage cavities, is poor in coating property and not high-temperature resistant, has high stripping weight and is unstable, so that the ultra-thick graphene products can not be met.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides a calendering release film for a graphene carrier and a preparation method thereof.
The technical scheme is as follows: the invention provides a calendering release film for a graphene carrier, which comprises a substrate layer and a release layer adhered to the surface of the substrate layer, and is characterized in that coating liquor of the release layer is prepared from the following components in parts by weight: after 28-50 parts of phenyl silicone oil, 28-35 parts of silica gel resin and 1-3 parts of methyl silicone resin are mixed, 35-43 parts of organic solvent is added to be fully stirred and dispersed, and finally 1-3 parts of crosslinking aid, 1-2 parts of adhesion aid and 2-3 parts of platinum catalytic aid are added to be integrally mixed to obtain the catalyst.
Preferably, the organic solvent is mineral spirit 120.
The invention also provides a preparation method of the calendering release film for the graphene carrier, which comprises the following steps: coating the coating liquid of the release layer on the surface of the base material layer which is subjected to corona treatment and has a dyne value of more than 48 through a mesh roller, and transferring the coating liquid of the release layer to the surface of the base material layer through meshes of the mesh roller so as to form the release layer with the meshes; when the grids of the mesh roller are transferred to the surface of the base material layer, the angle of the scraper is 40-43 degrees, and the air pressure of the rubber roller is set to be 3.0-4.0 Pa; the coating weight is 0.5-0.65 g/m2(ii) a The baking temperatures of the six sections of baking ovens during coating are respectively: 115-125 ℃, 135-145 ℃, 145-155 ℃, 135-145 ℃, 115-125 ℃, 95-105 ℃, and the transmission speed of the substrate layer is 45-55 m/min during coating; the total baking time of coating is 40-50 s.
Preferably, the thickness of the substrate layer is 50 um-70 um.
Preferably, the thickness of the release layer is 3.5-4.5 mu m.
Preferably, the mesh size of the mesh roll is 150 mesh.
Preferably, the substrate layer is a PET film.
Has the advantages that: the release film takes PET with the thickness of 50-70 um as a base material, and the surface dyne value of the base material is larger than 48 after the corona treatment is carried out on the surface of the base material; through the adjustment to this from phenyl silicone oil, silica gel resin and methyl silicone resin proportion in the layer formula, reach the optimization to surface coating performance, surface energy is high, and surface soft or hard degree has fine affinity with the rare surface energy of graphite, and graphite alkene coating shows fine coating effect to this from type membrane surface, and graphite alkene can not have the shrinkage cavity phenomenon when the coating.
The thickness of the release layer of the release film is controlled to be about 4 mu m, the dry silicon content in each square meter in the coating of the release layer is more than 10 g, the release gram weight is 150 g lighter than that of the common calendering film (the release gram weight is 700 g), but the effect after calendering is better than that of the common calendering film.
The carrier coating and calendering process of the ultra-thick graphene material can be effectively met by utilizing the characteristic that the release layer of the release film is thick, and the release film can be suitable for calendering the graphene with various thicknesses due to good affinity with the surface of the graphene.
When the release film is used, prepared graphene slurry is uniformly coated on the surface of the release film through special equipment, the release film bears graphene and is subjected to high-temperature baking and curing, and the cured graphene is subjected to calendaring treatment through a calendaring machine and is wound for standby application; coating, curing and calendaring are finished at one time, so that the cost can be effectively saved, and the working efficiency is improved. The release film can also have a good stripping effect after secondary high temperature, no crosslinking and residue are generated between the release film and graphene feed liquid, the heat resistance is high, the stripping strength is good, the stripping gram weight is light, different resin materials of different systems have different effects in a coating, phenyl silicone oil has the release effect, the silica gel resin has the characteristic of ultralow micro-viscosity, and the release film can effectively have the characteristics of low micro-viscosity and stripping force through the two different proportions of regulation. The methyl silicone resin has the function of adjusting the surface hardness. The graphene carrier release film prepared by the method and different proportions has stable peeling data, no residue, acid and salt resistance, micro-adsorption on the surface of the coating, good transparency, strong surface leveling property, capability of well pressing ultra-thick graphene and high glossiness of the pressed graphene. The surface adsorbability is good, the coating is thick, the glossiness is high, and the method plays an important role in the manufacturing process of graphene.
The release film has the advantages that the surface performance of the coating is excellent, the release film has the dual characteristics of micro-adhesion and release, and the use effect is good in the graphene manufacturing process, so that the graphene carrier and calendering can be completed at one time.
Drawings
Fig. 1 is a schematic view of a coating process of a calendered release film for graphene carrier in the present application;
fig. 2 is a schematic view of a calendered release film with graphene on the surface.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The source and type of raw materials used in the following specific embodiments are as follows:
phenyl silicone oil: dow, model number 9106, molecular weight 1200-2000;
silica gel resin: eken corporation, model 7413;
methyl silicone resin: dow company, model 7210
No. 120 solvent oil: an organic solvent oil having a dissolving property;
crosslinking assistant agent: dow corporation, model 7028;
an adhesion aid: dow corporation, type 297;
platinum catalyst promoter: dow company, model 4000.
Embodiment 1:
the embodiment provides a calendering release film for a graphene carrier, which comprises a substrate layer and a release layer which are sequentially laminated and bonded, wherein a coating material liquid of the release layer is prepared from the following components in parts by weight: 30 parts of phenyl silicone oil, 30 parts of silica gel resin and 2 parts of methyl silicone resin are mixed, 40 parts of No. 120 solvent oil is added to be fully stirred and dispersed, and finally, 3 parts of cross-linking auxiliary agent containing hydrogen, 1.5 parts of adhesion auxiliary agent and 2.2 parts of platinum catalytic auxiliary agent are added to be integrally mixed to obtain the catalyst.
The method for preparing the calendering release film for the graphene carrier by using the coating solution of the release layer comprises the following steps:
coating the coating liquid 1 of the release layer on the surface of a PET substrate layer 3 which is subjected to corona treatment and has a dyne value of more than 48 through a 150-mesh screen roller 2, transferring the coating liquid 1 of the release layer to the surface of the substrate layer 3 through meshes of the screen roller 2, and enabling the thickness of the substrate layer 3 to be 60 micrometers; a release layer 4 having a thickness of 4 μm with a mesh was formed.
Wherein, when the mesh of the mesh roller 2 is transferred to the surface of the substrate layer 3, the angle of the scraper 5 is 40-43 degrees, the air pressure of the rubber roller 6 is set at 3.5Pa, and the coating amount is 0.6g/m2；
The baking temperatures of the six sections of baking ovens during coating are respectively as follows: 120 ℃, 140 ℃, 150 ℃, 140 ℃, 120 ℃, 100 ℃, the conveying speed of the base material is 50m/min during coating; the total coating time was 50 s.
Embodiment 2:
this embodiment is substantially the same as embodiment 1, except that 50 parts of phenyl silicone oil is used in the coating solution formulation for the release layer of the rolled release film for graphene carrier in this embodiment. Otherwise, this embodiment is identical to embodiment 1, and will not be described herein.
Embodiment 3:
this embodiment is substantially the same as embodiment 1, except that in this embodiment, 40 parts of phenyl silicone oil and 3 parts of methyl silicone resin are used in the coating solution formulation for the release layer of the rolled release film for a graphene carrier. Otherwise, this embodiment is identical to embodiment 1, and will not be described herein.
Comparative example:
this embodiment is substantially the same as embodiment 1, except that in this embodiment, 50 parts of phenyl silicone oil, 30 parts of silicone resin, and 2 parts of methyl silicone resin are used in the coating solution formulation for the release layer of the rolled release film for a graphene carrier. Otherwise, this embodiment is identical to embodiment 1, and will not be described herein.
The calendered release film for graphene carrier prepared in each of the above embodiments and comparative examples is used in a graphene calendering process with the thickness of 100 μm, 120 μm and 150 μm, and then the release gram of the calendered graphene release film product obtained after calendering is tested, and the test results are as shown in table 1 below:
TABLE 1
As can be seen from table 1, the addition amounts of the resins in different ratios significantly differ from each other in the graphene production process, and the data measured in the ratio of embodiment 1 is the most ideal data through experiments. The strength of surface peeling and the gloss of the surface are obvious and different.
The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a calendering release film for graphite alkene carrier, includes the substrate layer and bonds in the layer is released on the substrate layer surface, its characterized in that, the coating feed liquid of releasing the layer is prepared by the component of following parts by weight: after 28-50 parts of phenyl silicone oil, 28-35 parts of silica gel resin and 1-3 parts of methyl silicone resin are mixed, 35-43 parts of organic solvent is added to be fully stirred and dispersed, and finally 1-3 parts of crosslinking aid, 1-2 parts of adhesion aid and 2-3 parts of platinum catalytic aid are added to be integrally mixed to obtain the catalyst.
2. The calendered release film for a graphene carrier according to claim 1, wherein the organic solvent is 120 # solvent oil.
3. A preparation method of a calendering release film for a graphene carrier is characterized by comprising the following steps:
coating the coating liquid (1) of the release layer of claim 1 or 2 on the surface of the base material layer (3) which is subjected to corona treatment and has a dyne value of more than 48 through a mesh roller (2), wherein the coating liquid (1) of the release layer is transferred to the surface of the base material layer (3) through meshes of the mesh roller (2), so that a release layer (4) with meshes is formed;
when the grids of the mesh roller (2) are transferred to the surface of the substrate layer (3), the angle of the scraper (5) is 40-43 degrees, and the air pressure of the rubber roller (6) is set to be 3.0-4.0 Pa; the coating weight is 0.5-0.65 g/m2 ；
The baking temperatures of the six sections of baking ovens during coating are respectively as follows: 115-125 ℃, 135-145 ℃, 145-155 ℃, 135-145 ℃, 115-125 ℃, 95-105 ℃, and the conveying speed of the substrate layer (3) is 45-55 m/min during coating; the total coating baking time is 40-50 s.
4. The preparation method of the calendered release film for graphene carrier according to claim 3, wherein the thickness of the substrate layer (3) is 50-70 um.
5. The preparation method of the calendered release film for graphene carrier according to claim 3, wherein the thickness of the release layer (4) is 3.5-4.5 μm.
6. The method for preparing the calendered release film for a graphene carrier according to claim 3, wherein the mesh size of the mesh roll is 150 mesh.
7. The method for producing the calendered release film for graphene carrier according to any one of claims 3 to 6, characterized in that the substrate layer (3) is a PET film.
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- 2022-03-14 CN CN202210249206.2A patent/CN114479149A/en active Pending
Patent Citations (4)
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| CN109096513A (en) * | 2018-07-10 | 2018-12-28 | 温州新意特种纸业有限公司 | A kind of PET release film and its manufacturing method |
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| CN214688339U (en) * | 2020-12-31 | 2021-11-12 | 东莞市鼎力薄膜科技有限公司 | Release film for OCA (optical clear adhesive) |
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Application publication date: 20220513 |