CN113478989B - Thermal transfer printing color ribbon applied to electroluminescent back electrode and preparation method thereof - Google Patents

Thermal transfer printing color ribbon applied to electroluminescent back electrode and preparation method thereof Download PDF

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CN113478989B
CN113478989B CN202110767888.1A CN202110767888A CN113478989B CN 113478989 B CN113478989 B CN 113478989B CN 202110767888 A CN202110767888 A CN 202110767888A CN 113478989 B CN113478989 B CN 113478989B
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coating
layer
release layer
water
agent
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CN113478989A (en
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李辉
唐国初
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Hunan Dingyi Zhiyuan Technology Development Co Ltd
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Hunan Dingyi Zhiyuan Technology Development Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J31/00—Ink ribbons; Renovating or testing ink ribbons
    • B41J31/05—Ink ribbons having coatings other than impression-material coatings
    • B41J31/06—Ink ribbons having coatings other than impression-material coatings the coatings being directly on the base material, i.e. below impression transfer material; Ink ribbons having base material impregnated with material other than impression material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions 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; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/14—Metallic material, boron or silicon
    • C23C14/20—Metallic material, boron or silicon on organic substrates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Abstract

The invention relates to a thermal transfer ribbon applied to an electroluminescent back electrode and a preparation method thereof. The heat transfer printing color ribbon with the conducting layer adopts the aluminum film layer with low price, reduces the color ribbon cost, and can obtain the low-sheet resistance and low-cost conducting color ribbon. The back electrode is manufactured in a thermal transfer printing mode, and the manufacturing of complex patterns can be realized.

Description

Thermal transfer printing color ribbon applied to electroluminescent back electrode and preparation method thereof
Technical Field
The invention relates to the technical field of thermal transfer printing, in particular to a thermal transfer printing color ribbon applied to an electroluminescent back electrode and a preparation method thereof.
Background
Electroluminescence is a physical phenomenon in which electrons excited by an electric field collide with a luminescence center by applying a voltage between two electrodes to generate the electric field, and transition, change, and recombination of the electrons between energy levels are induced to cause luminescence. The traditional electroluminescent device generally comprises a transparent base material, a transparent conductive electrode, a light emitting layer, a dielectric layer, a back electrode and an insulating protective layer, with the development of the electroluminescent technology, the pattern of the electroluminescent device tends to be complicated and colorized, the complicated pattern is generally realized by two modes, firstly, the pattern is manufactured on the surface of the transparent base material through processes of spray painting, screen printing, transfer printing, film coating and the like, the pattern does not emit light, the pattern is displayed mainly through the light emission of the electroluminescent device serving as a background, the pattern lacks gorgeous feeling, and the contrast is not high; another way is to make the pattern itself glow by making the back electrode pattern (i.e. what pattern the back electrode is made in, what pattern the electroluminescent film shows up in), which enhances its contrast. At present, the electroluminescent back electrode is mainly prepared by adopting screen printing and film coating processes. The resolution of the screen printing is not high, so that reliable connection between electrode wires cannot be realized when making extremely fine patterns. And because the equipment is large, the coating film can only be fixed in factory construction, and various patterns can not be conveniently manufactured on site according to the real-time requirements of customers. The other complicated electroluminescent pattern making method is to etch the back electrode, and the processes are complicated and have no way of making patterns simply, quickly and in real time. The ribbon with the conducting layer can accurately, conveniently, quickly and greenly print out the back electrode pattern required by a client at any time according to the client requirement through thermal transfer printing, and the quick and autonomous manufacturing of the complex pattern is realized. Meanwhile, the existing ribbon with the conducting layer is mainly prepared by coating silver nanowires, conducting polymers, graphene and other conducting materials, the cost is high, the process difficulty is high, and the square resistance of the prepared conducting layer is high.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a thermal transfer ribbon applied to an electroluminescent back electrode and a preparation method thereof.
The technical scheme for solving the technical problems is as follows: the utility model provides a be applied to electroluminescent back electrode's heat-transfer seal typewriter ribbon, includes the substrate, leaves type layer, back coating and aluminium rete, it sets up respectively to leave type layer and back coating the both sides of substrate, be equipped with the aluminium rete on leaving the type layer.
The beneficial effects of the invention are: the heat transfer printing color ribbon with the conducting layer adopts the aluminum film layer with low price, reduces the color ribbon cost, and can obtain the conducting color ribbon with low sheet resistance and low cost. The back electrode is manufactured by adopting a thermal transfer printing mode, so that the manufacture of complex patterns can be realized.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the thickness of the aluminum film layer is 0.1-1 μm, the thickness of the back coating layer is 0.6-0.8 μm, and the thickness of the release layer is 0.2-0.5 μm.
The beneficial effect of adopting the further scheme is that: through rationally injecing aluminium rete, back coating and from the thickness on type layer, can guarantee going on smoothly of complicated pattern of heat-transfer seal preparation.
Further, the formula of the release layer comprises, by weight, 10-20 parts of thermoplastic water-based acrylic resin, 5-10 parts of water-based polyester resin, 5-12 parts of water-soluble silicone oil, 0-0.03 part of leveling agent, 0-0.03 part of defoaming agent and 30-80 parts of water.
The thermoplastic water-based acrylic resin can be softened by repeated heating and solidified by cooling. The general linear macromolecular compound can be homopolymer or copolymer, and has good physical and mechanical properties, excellent weather resistance, chemical resistance and water resistance, and high light and color retention. The thermoplastic water-based acrylic resin is used as a coating, has good weather resistance (close to the level of a cross-linked acrylic coating), excellent gloss retention and color retention, and good water resistance, acid resistance and alkali resistance.
The water-based polyester resin has the advantages of good adhesive force, high fullness, impact resistance and the like.
The release layer prepared by the formula can completely thermally transfer the aluminum on the color ribbon when the prepared color ribbon is thermally transferred, no residual aluminum exists, the back electrode prepared by transfer printing is continuous, and the square resistance of the back electrode prepared after transfer printing is the same as that of the color ribbon.
Further, the back coating formula comprises 2-butanone, toluene, polyurethane modified organic silicon resin, acrylic acid modified organic silicon resin, a leveling agent, a dispersing agent and an antistatic agent.
The polyurethane modified organic silicon resin is a modified resin prepared by organic silicon oligomer and polyurethane resin. The cross-linking agent is prepared by reacting a poly-resin component containing active functional groups with an organosilicon oligomer containing active functional groups (or alkoxy groups) to generate organosilicon modified poly-resin which is still rich in active light groups, and then using an isocyanate component as a cross-linking agent. Can be cured at normal temperature, and the heat resistance and the weather resistance of the coating are improved.
The acrylic modified organic silicon resin is a kind of modified resin prepared by reacting polyacrylic phenol resin containing active radical with organic silicon oligomer containing active antelope radical (or alkoxy radical), and has good physical and mechanical properties, excellent heat resistance and weather resistance. The organic silicon modified acrylic resin is used for preparing paint, and has the advantages of excellent gloss retention and color retention, difficult pulverization and good gloss.
Further, the aluminum film further comprises an OC layer, wherein the OC layer is arranged on the aluminum film layer;
the OC layer comprises acrylic resin, an adhesion promoter, a solvent and an auxiliary agent; the acrylic resin accounts for 5-30% of the mass percentage; the adhesion promoter is selected from one or more of tetraethyl titanate and n-butyl titanate, and the adhesion promoter accounts for 0-2% by mass; the solvent is water, and accounts for 60-85% by mass; the auxiliary agent is selected from one or more of dibutyl phthalate, dimethyl phthalate, polyethylene wax and dimethyl silicone oil, and accounts for 2-5% by mass.
The OC layer can improve the thermal transfer capability and the adhesive force of the transferred aluminum on the base material.
A preparation method of a thermal transfer ribbon applied to an electroluminescent back electrode comprises the following steps:
s1, applying corona to two sides of a base material;
s2, respectively coating a back coating layer and a release layer on two side surfaces of the substrate and drying;
and S3, evaporating an aluminum film layer on the release layer.
The beneficial effects of the invention are: according to the thermal transfer ribbon with the conductive layer, the aluminum film layer is evaporated on the release layer, so that the ribbon cost is reduced, and the conductive ribbon with low sheet resistance and low cost can be obtained.
And further S3, evaporating an aluminum film layer on the release layer by adopting a vacuum evaporation method. Specifically, the substrate coated with the release layer is placed in a vacuum aluminum plating device, and when the vacuum degree of the vacuum aluminum plating device reaches a preset vacuum degree of 10 -4 ～10 - 5 The temperature of the evaporation boat is 1300-1400 ℃, the temperature of the aluminum evaporation chamber is 40 ℃, the aluminum wire conveying is started, the speed is 200-450 mm/min, the PET film rolling is started, the speed is more than or equal to 3.5m/s, a baffle is opened for evaporation, and aluminum plating is carried out.
The beneficial effect of adopting the above further scheme is: the aluminum film layer prepared by the vacuum evaporation method has low sheet resistance and simple preparation, and avoids coating to prepare a conductive layer.
Further, the preset vacuum degree is 10 -4 ～10 -5 MPa。
Further, S2 comprises coating a back coating on the substrate and drying, and then coating a release layer and drying.
The beneficial effect of adopting the further scheme is that: the thermal transfer printing capability is improved.
Further, the drying temperature of the coating back coating is 60-120 ℃, and the drying temperature of the coating release layer is 60-120 ℃.
The beneficial effect of adopting the further scheme is that: the heat transfer printing capability is improved.
Further, S4, coating an OC layer on the aluminum film layer. The OC layer can improve the thermal transfer capability and the adhesive force of the transferred aluminum on the base material.
Further, the preparation method of the back coating comprises the following steps: firstly, adding polyurethane modified organic silicon resin and acrylic acid modified organic silicon resin into a mixed solvent of 2-butanone and toluene for dissolving, then adding a flatting agent, a dispersing agent and an antistatic agent for fully stirring and uniformly mixing to obtain a back coating liquid, and coating the back coating liquid on the side surface of a substrate to obtain a back coating;
the preparation method of the release layer comprises the following steps: dissolving thermoplastic water-based acrylic resin and water-based polyester resin in water, adding water-soluble silicone oil, a flatting agent and a defoaming agent, fully stirring and uniformly mixing to obtain a release layer coating liquid, and coating the release layer coating liquid on the side surface of a substrate to obtain the release layer.
The beneficial effect of adopting the further scheme is that: the water-based resin is adopted to prepare the release layer, so that the pollution is less.
Drawings
FIG. 1 is a schematic structural diagram of a thermal transfer ribbon applied to an electroluminescent back electrode according to the present invention.
In the drawings, the reference numbers indicate the following list of parts:
1. a substrate; 2. a release layer; 3. back coating; 4. an aluminum film layer; 5. an OC layer.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1
The thermal transfer ribbon for the electroluminescent back electrode of the embodiment comprises a substrate 1, a release layer 2, a back coating layer 3 and an aluminum film layer 4, wherein the release layer 2 and the back coating layer 3 are respectively arranged on two sides of the substrate 1, and the aluminum film layer 4 is arranged on the release layer 2. The substrate 1 is a PET substrate.
The thickness of the aluminum film layer 4 is 0.1 μm, the thickness of the back coating layer 3 is 0.6 μm, and the thickness of the release layer 2 is 0.2 μm. Through rationally injecing aluminium rete, back coating and from the thickness on type layer, can guarantee going on smoothly of complicated pattern of heat-transfer seal preparation.
The formula of the release layer 2 comprises 10 parts by weight of thermoplastic water-based acrylic resin, 5 parts by weight of water-based polyester resin, 5 parts by weight of water-soluble silicone oil and 80 parts by weight of water.
The back coating 3 comprises, by weight, 100 parts of 2-butanone, 100 parts of toluene, 5 parts of polyurethane modified organic silicon resin, 5 parts of acrylic modified organic silicon resin, 2 parts of a leveling agent, 2 parts of a dispersing agent and 2 parts of an antistatic agent.
The thermal transfer ribbon with the conductive layer of the embodiment adopts the aluminum film layer with low price, thereby reducing the ribbon cost and obtaining the conductive ribbon with low sheet resistance and low cost. The back electrode is manufactured in a thermal transfer printing mode, and the manufacturing of complex patterns can be realized.
A preparation method of a thermal transfer ribbon applied to an electroluminescent back electrode comprises the following steps:
s1, applying corona to two sides of a base material 1;
s2, coating a back coating 3 on the base material 1 and drying, and then coating a release layer 2 and drying; the drying temperature of the coating back coating 3 is 60 ℃, and the drying temperature of the coating release layer 2 is 60 ℃;
s3, placing the substrate coated with the release layer 2 into vacuum aluminizing equipment, and when the vacuum degree of the vacuum aluminizing equipment reaches a preset vacuum degree of 10 -4 And (3) under the conditions of MPa, the evaporation temperature of the evaporation boat is 1300 ℃, the temperature of the aluminum evaporation plating chamber is 40 ℃, the aluminum wire conveying is started, the speed is 200mm/min, the PET film winding is started, and after the speed is more than or equal to 3.5m/s, the baffle is opened for evaporation plating and aluminum plating are carried out. The square resistance of the aluminized aluminum film is 5 ohm per square.
The preparation method of the back coating 3 comprises the following steps: firstly, adding polyurethane modified organic silicon resin and acrylic acid modified organic silicon resin into a mixed solvent of 2-butanone and toluene for dissolving, then adding a leveling agent, a dispersing agent and an antistatic agent, fully stirring and uniformly mixing for 2 hours to obtain a back coating liquid, and coating the back coating liquid on the side surface of a substrate to obtain a back coating;
the preparation method of the release layer 2 comprises the following steps: dissolving thermoplastic water-based acrylic resin and water-based polyester resin in water, then adding water-soluble silicone oil, a flatting agent and a defoaming agent, fully stirring and uniformly mixing for 2 hours to obtain a release layer coating liquid, and coating the release layer coating liquid on the side surface of a substrate to obtain a release layer.
Example 2
The thermal transfer ribbon for the electroluminescent back electrode of the embodiment comprises a substrate 1, a release layer 2, a back coating layer 3 and an aluminum film layer 4, wherein the release layer 2 and the back coating layer 3 are respectively arranged on two sides of the substrate 1, and the aluminum film layer 4 is arranged on the release layer 2. The substrate 1 is a PET substrate.
The thickness of the aluminum film layer 4 is 0.5 μm, the thickness of the back coating layer 3 is 0.7 μm, and the thickness of the release layer 2 is 0.3 μm. Through rationally injecing aluminium rete, back coating and from the thickness on type layer, can guarantee going on smoothly of complicated pattern of heat-transfer seal preparation.
The formula of the release layer 2 comprises 15 parts by weight of thermoplastic water-based acrylic resin, 7 parts by weight of water-based polyester resin, 8 parts by weight of water-soluble silicone oil, 0.15 part by weight of leveling agent, 0.15 part by weight of defoaming agent and 69.97 parts by weight of water.
The back coating 3 comprises, by weight, 100 parts of 2-butanone, 100 parts of toluene, 5 parts of polyurethane modified organic silicon resin, 5 parts of acrylic modified organic silicon resin, 2 parts of a leveling agent, 2 parts of a dispersing agent and 2 parts of an antistatic agent.
The thermal transfer ribbon with the conductive layer of the embodiment adopts the aluminum film layer with low price, thereby reducing the ribbon cost and obtaining the conductive ribbon with low sheet resistance and low cost. The back electrode is manufactured in a thermal transfer printing mode, and the manufacturing of complex patterns can be realized.
A preparation method of a thermal transfer ribbon applied to an electroluminescent back electrode comprises the following steps:
s1, applying corona to two sides of a base material 1;
s2, coating a back coating 3 on the base material 1 and drying, and then coating a release layer 2 and drying; the drying temperature of the coating back coating 3 is 90 ℃, and the drying temperature of the coating release layer 2 is 90 ℃;
s3, placing the base material coated with the release layer 2 into vacuum aluminum plating equipment, and when the vacuum degree of the vacuum aluminum plating equipment reaches a preset vacuum degree of 10 -4 And MPa, starting aluminum wire conveying at the speed of 300mm/min and starting PET film winding at the speed of more than or equal to 3.5m/s, opening a baffle plate for evaporation and plating aluminum, wherein the evaporation temperature of the evaporation boat is 1350 ℃, the temperature of the aluminum evaporation plating chamber is 40 ℃. The square resistance of the aluminized aluminum film is 10 ohm per square.
The preparation method of the back coating 3 comprises the following steps: firstly, adding polyurethane modified organic silicon resin and acrylic acid modified organic silicon resin into a mixed solvent of 2-butanone and toluene for dissolving, then adding a leveling agent, a dispersing agent and an antistatic agent, fully stirring and uniformly mixing for 2 hours to obtain a back coating liquid, and coating the back coating liquid on the side surface of a substrate to obtain a back coating;
the preparation method of the release layer 2 comprises the following steps: dissolving thermoplastic water-based acrylic resin and water-based polyester resin in water, then adding water-soluble silicone oil, a flatting agent and a defoaming agent, fully stirring and uniformly mixing for 2 hours to obtain a release layer coating liquid, and coating the release layer coating liquid on the side surface of a substrate to obtain a release layer.
Example 3
The thermal transfer ribbon applied to the electroluminescent back electrode comprises a substrate 1, a release layer 2, a back coating layer 3 and an aluminum film layer 4, wherein the release layer 2 and the back coating layer 3 are respectively arranged on two sides of the substrate 1, and the aluminum film layer 4 is arranged on the release layer 2. The substrate 1 is a PET substrate.
The thickness of the aluminum film layer 4 is 1 μm, the thickness of the back coating layer 3 is 0.8 μm, and the thickness of the release layer 2 is 0.5 μm. Through rationally injecing aluminium rete, back coating and from the thickness on type layer, can guarantee going on smoothly of complicated pattern of heat-transfer seal preparation.
The formula of the release layer 2 comprises, by weight, 20 parts of thermoplastic water-based acrylic resin, 10 parts of water-based polyester resin, 12 parts of water-soluble silicone oil, 0.03 part of leveling agent, 0.03 part of defoaming agent and 42.06 parts of water.
The back coating 3 comprises, by weight, 100 parts of 2-butanone, 100 parts of toluene, 5 parts of polyurethane modified organic silicon resin, 5 parts of acrylic modified organic silicon resin, 2 parts of a leveling agent, 2 parts of a dispersing agent and 2 parts of an antistatic agent.
The thermal transfer ribbon with the conductive layer of the embodiment adopts the aluminum film layer with low price, thereby reducing the ribbon cost and obtaining the conductive ribbon with low sheet resistance and low cost. The back electrode is manufactured by adopting a thermal transfer printing mode, so that the manufacture of complex patterns can be realized.
A preparation method of a thermal transfer ribbon applied to an electroluminescent back electrode comprises the following steps:
s1, applying corona to two sides of a base material 1;
s2, coating a back coating 3 on the base material 1 and drying, and then coating a release layer 2 and drying; the drying temperature of the coating back coating 3 is 120 ℃, and the drying temperature of the coating release layer 2 is 120 ℃;
s3, placing the base material coated with the release layer 2 into vacuum aluminum plating equipment, and when the vacuum degree of the vacuum aluminum plating equipment reaches a preset vacuum degree of 10 -5 And (3) under the conditions of MPa, the evaporation temperature of the evaporation boat is 1400 ℃, the temperature of the aluminum evaporation plating chamber is 40 ℃, the aluminum wire conveying is started, the speed is 450mm/min, the PET film winding is started, and after the speed is more than or equal to 3.5m/s, the baffle is opened for evaporation plating, and aluminum plating is performed. Aluminium film square resistor after aluminium plating8 ohms per square.
The preparation method of the back coating 3 comprises the following steps: firstly, adding polyurethane modified organic silicon resin and acrylic acid modified organic silicon resin into a mixed solvent of 2-butanone and toluene for dissolving, then adding a leveling agent, a dispersing agent and an antistatic agent, fully stirring and uniformly mixing for 2 hours to obtain a back coating liquid, and coating the back coating liquid on the side surface of a substrate to obtain a back coating;
the preparation method of the release layer 2 comprises the following steps: dissolving the thermoplastic water-based acrylic resin and the water-based polyester resin in water, then adding the water-soluble silicone oil, the flatting agent and the defoaming agent, fully stirring and uniformly mixing for 2 hours to obtain a release layer coating liquid, and coating the release layer coating liquid on the side surface of the substrate to obtain the release layer.
Example 4
On the basis of any one of embodiment 1 to embodiment 3, an OC layer may be disposed on the aluminum film layer, where the OC layer includes an acrylic resin, an adhesion promoter, a solvent, and an auxiliary agent; the acrylic resin accounts for 8% by mass; the adhesion promoter is selected from one or more of tetraethyl titanate and n-butyl titanate, and accounts for 2% by mass; the solvent is water, and accounts for 85% by mass; the auxiliary agent is selected from one or more of dibutyl phthalate, dimethyl phthalate, polyethylene wax and dimethyl silicone oil, and accounts for 5% by mass. Through set up the OC layer on the aluminium rete, can improve the heat-transfer seal ability, improve the adhesive force of transfer printing back aluminium on the substrate.
Example 5
On the basis of any one of embodiments 1 to 3, an OC layer may be disposed on the aluminum film layer, where the OC layer includes an acrylic resin, an adhesion promoter, a solvent, and an auxiliary agent; the acrylic resin accounts for 22% by mass; the adhesion promoter is selected from one or more of tetraethyl titanate and n-butyl titanate, and accounts for 1% by mass; the solvent is water and accounts for 75% by mass; the auxiliary agent is selected from one or more of dibutyl phthalate, dimethyl phthalate, polyethylene wax and dimethyl silicone oil, and accounts for 2% by mass. Through set up the OC layer on the aluminium rete, can improve the heat-transfer seal ability, improve the adhesive force of transfer printing back aluminium on the substrate.
Example 6
On the basis of any one of embodiments 1 to 3, an OC layer may be disposed on the aluminum film layer, where the OC layer includes an acrylic resin, an adhesion promoter, a solvent, and an auxiliary agent; the acrylic resin accounts for 30% by mass; the adhesion promoter is selected from one or more of tetraethyl titanate and n-butyl titanate, and accounts for 0% by mass; the solvent is water and accounts for 66% by mass; the auxiliary agent is selected from one or more of dibutyl phthalate, dimethyl phthalate, polyethylene wax and dimethyl silicone oil, and accounts for 4% by mass. Through set up the OC layer on aluminium rete, can improve heat-transfer seal ability, improve the adhesive force of rendition back aluminium on the substrate.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "disposed," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (3)

1. A thermal transfer ribbon applied to an electroluminescent back electrode is characterized by comprising a substrate, a release layer, a back coating and an aluminum film layer, wherein the release layer and the back coating are respectively arranged on two sides of the substrate;
the release layer comprises, by weight, 10-20 parts of thermoplastic water-based acrylic resin, 5-10 parts of water-based polyester resin, 5-12 parts of water-soluble silicone oil, 0-0.03 part of flatting agent, 0-0.03 part of defoaming agent and 30-80 parts of water;
the back coating formula comprises 2-butanone, toluene, polyurethane modified organic silicon resin, acrylic acid modified organic silicon resin, a leveling agent, a dispersing agent and an antistatic agent;
the thickness of the aluminum film layer is 0.1-1 μm, the thickness of the back coating layer is 0.6-0.8 μm, and the thickness of the release layer is 0.2-0.5 μm;
a preparation method of a thermal transfer ribbon applied to an electroluminescent back electrode comprises the following steps:
s1, applying corona to two sides of a base material;
s2, respectively coating a back coating layer and a release layer on two side surfaces of the substrate and drying;
s3, evaporating an aluminum film layer on the release layer by adopting a vacuum evaporation method; the preset vacuum degree of vacuum evaporation equipment used in the vacuum evaporation method is 10 -4 ～10 -5 The temperature of the evaporation boat is 1300-1400 ℃, and the temperature of the aluminum evaporation chamber is 40 ℃;
the preparation method of the back coating comprises the following steps: firstly, adding polyurethane modified organic silicon resin and acrylic acid modified organic silicon resin into a mixed solvent of 2-butanone and toluene for dissolving, then adding a flatting agent, a dispersing agent and an antistatic agent for fully stirring and uniformly mixing to obtain a back coating liquid, and coating the back coating liquid on the side surface of a substrate to obtain a back coating;
the preparation method of the release layer comprises the following steps: dissolving the thermoplastic water-based acrylic resin and the water-based polyester resin in water, then adding the water-soluble silicone oil, the flatting agent and the defoaming agent, fully stirring and uniformly mixing to obtain a release layer coating liquid, and coating the release layer coating liquid on the side surface of the substrate to obtain the release layer.
2. The thermal transfer ribbon of claim 1, wherein an OC layer is coated on the aluminum film layer, and the OC layer is disposed on the aluminum film layer;
the OC layer comprises acrylic resin, an adhesion promoter, a solvent and an auxiliary agent; the acrylic resin accounts for 5-30% by mass; the adhesion promoter is selected from one or more of tetraethyl titanate and n-butyl titanate, and the adhesion promoter accounts for 0-2% by mass; the solvent is water, and accounts for 60-85% by mass; the auxiliary agent is selected from one or more of dibutyl phthalate, dimethyl phthalate, polyethylene wax and dimethyl silicone oil, and accounts for 2-5% by mass.
3. The thermal transfer ribbon applied to the electroluminescent back electrode as claimed in claim 1, wherein S2 comprises coating a back coating layer on the substrate and drying, and then coating a release layer and drying; the drying temperature of the coating back coating is 60-120 ℃, and the drying temperature of the coating release layer is 60-120 ℃.
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