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WO2014204265A1 - Composition d'encre conductrice, film conducteur transparent la comprenant et procédé de fabrication de film conducteur transparent - Google Patents

Composition d'encre conductrice, film conducteur transparent la comprenant et procédé de fabrication de film conducteur transparent Download PDF

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Publication number
WO2014204265A1
WO2014204265A1 PCT/KR2014/005466 KR2014005466W WO2014204265A1 WO 2014204265 A1 WO2014204265 A1 WO 2014204265A1 KR 2014005466 W KR2014005466 W KR 2014005466W WO 2014204265 A1 WO2014204265 A1 WO 2014204265A1
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Prior art keywords
conductive
ink composition
solvent
weight
metal
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English (en)
Korean (ko)
Inventor
이인숙
이용정
한미경
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InkTec Co Ltd
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InkTec Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • 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
    • C09D11/00—Inks
    • C09D11/52—Electrically conductive inks
    • 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
    • C09D11/00—Inks
    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material

Definitions

  • the present invention relates to a conductive ink composition, a transparent conductive film including the same, and a method for manufacturing the transparent conductive film, and more particularly, to modify the composition of the solvent of the conductive ink composition to control bubble generation to improve optical and electrical properties. It relates to a conductive ink composition, a transparent conductive film comprising the same, and a method for producing a transparent conductive film.
  • the transparent conductive film has been used as an essential component of electrical and electronic equipment such as transparent electrodes in various display fields such as power supply of display devices, electromagnetic shielding films of home appliances, LCDs, OLEDs, FEDs, PDPs, flexible displays, and electronic paper.
  • Transparent conductive films currently in use include inorganic oxide conductive materials such as indium tin oxide (ITO), antimony tin oxide (ATO), and antimony zinc oxide (AZO). I use it.
  • ITO indium tin oxide
  • ATO antimony tin oxide
  • AZO antimony zinc oxide
  • the conductive paste or the conductive nano ink technology in the electronic industry has been in the spotlight recently in terms of productivity, cost reduction, and environment due to the enlargement of the display industry and the simplification of the process.
  • Such conductive nano inks require uniform particle size and excellent dispersibility, and metal nano particles of uniform particle size used in the metal nano ink are mostly made by a chemical method that is dispersed and synthesized in a solution.
  • Such a conductive metal nano ink must consider a boiling point for fractional distillation, and depending on the type of solvent, it can greatly affect the physical properties of the conductive film, thereby limiting solvent selection.
  • Conventional oil-based metal inks have the advantages of smaller nanoparticle size, easier manufacturing of high concentration, and continuous ejection from the head during inkjet printing process, compared to water-based metal inks. Due to the uneven line width, surface treatment is essential and has a high firing temperature.
  • Korean Patent Publication No. 2008-0102098 solves this problem by selecting an ink additive soluble in a lipophilic solvent and optimizing the composition of the metal ink to increase the adhesive strength with the substrate and prevent cracks when forming the wiring by inkjet printing.
  • an ink additive soluble in a lipophilic solvent As a non-aqueous metal ink composition which hardens well at low temperature, the technique which disperse
  • Such a metal ink composition also has a problem of inferior dispersion due to complex process procedures and generation of waste water as well as reaggregation of metal nanoparticles.
  • an object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a conductive ink composition for a display that can control the generation of bubbles by adjusting the composition of a solvent.
  • the conductive ink composition according to an embodiment of the present invention comprises a conductive nanomaterial and a solvent, the solvent is made up of more than 80% and less than 100% by weight of water and more than 20% by weight of cosolvent 0 It is characterized by.
  • the conductive nanomaterial is at least one of a metal nanowire, a metal nanorod or a metal nanostructure of a metal nanoparticle, a conductive polymer, a conductive fiber, or a carbon nanotube.
  • the cosolvent is methanol, ethanol, isopropanol, 1-methoxypropanol, butanol, ethylhexyl alcohol, terpineol, ethylene glycol, glycerin, ethyl acetate, butyl acetate, methoxypropyl acetate, carbitol acetate, ethyl carbitol acetate , Methyl cellosolve, butyl cellosolve, diethyl ether, tetrahydrofuran, dioxane, methyl ethyl ketone, acetone, dimethylformamide, 1-methyl-2-pyrrolidone, hexane, heptane, dodecane, paraffin It is characterized in that at least one of oil, mineral spirit, benzene, toluene, xylene, chloroform, methylene chloride, carbon tetrachloride, acetonitrile
  • the conductive nano material is 0.01 to 10 parts by weight based on 100 parts by weight of the solvent.
  • the conductive ink composition further comprises a binder, a dispersant and a wetting agent, the binder is 0.01 to 1 part by weight, the dispersant is 0.001 to 0.5 parts by weight, the wetting agent is 0.0001 to 1 part by weight It features.
  • the conductive ink composition is characterized in that it further comprises a surfactant, leveling agent, thixotropic agent or reducing agent.
  • the conductive ink composition according to another embodiment of the present invention comprises a conductive nanomaterial and a solvent, the solvent is characterized in that the water.
  • the conductive nano material is 0.01 to 10 parts by weight based on 100 parts by weight of the solvent.
  • the transparent conductive film according to an embodiment of the present invention comprises a conductive nanomaterial and a solvent
  • the solvent is conductive consisting of more than 80% less than 100% by weight of water and more than 20% by weight of cosolvent 0 It is characterized by including an ink composition.
  • the conductive nanomaterial is at least one of a metal nanowire, a metal nanorod or a metal nanostructure of a metal nanoparticle, a conductive polymer, a conductive fiber, or a carbon nanotube.
  • the cosolvent is methanol, ethanol, isopropanol, 1-methoxypropanol, butanol, ethylhexyl alcohol, terpineol, ethylene glycol, glycerin, ethyl acetate, butyl acetate, methoxypropyl acetate, carbitol acetate, ethyl carbitol acetate , Methyl cellosolve, butyl cellosolve, diethyl ether, tetrahydrofuran, dioxane, methyl ethyl ketone, acetone, dimethylformamide, 1-methyl-2-pyrrolidone, hexane, heptane, dodecane, paraffin It is characterized in that at least one of oil, mineral spirit, benzene, toluene, xylene, chloroform, methylene chloride, carbon tetrachloride, acetonitrile
  • a method of manufacturing a transparent conductive film the coating step of coating a conductive ink composition comprising a conductive nanomaterial and a solvent on a substrate; And a drying step of drying the conductive ink composition, wherein the solvent is 80 to less than 100 wt% of water and more than 0 to 20 wt% of cosolvent.
  • the conductive nanomaterial is at least one of a metal nanowire, a metal nanorod or a metal nanostructure of a metal nanoparticle, a conductive polymer, a conductive fiber, or a carbon nanotube.
  • the metal nanowires have an average thickness of 10 to 200 nm and an average length of 1 to 100 ⁇ m.
  • the cosolvent is methanol, ethanol, isopropanol, 1-methoxypropanol, butanol, ethylhexyl alcohol, terpineol, ethylene glycol, glycerin, ethyl acetate, butyl acetate, methoxypropyl acetate, carbitol acetate, ethyl carbitol acetate , Methyl cellosolve, butyl cellosolve, diethyl ether, tetrahydrofuran, dioxane, methyl ethyl ketone, acetone, dimethylformamide, 1-methyl-2-pyrrolidone, hexane, heptane, dodecane, paraffin It is characterized in that at least one of oil, mineral spirit, benzene, toluene, xylene, chloroform, methylene chloride, carbon tetrachloride, acetonitrile
  • a method of manufacturing a transparent conductive film according to an embodiment of the present invention is a coating step of coating a conductive ink composition comprising a solvent consisting of a conductive nanomaterial and water on the substrate; And a drying step of drying the conductive ink composition.
  • the conductive nano material is 0.01 to 10 parts by weight based on 100 parts by weight of the solvent.
  • the conductive nanomaterial is at least one of a metal nanowire, a metal nanorod or a metal nanostructure of a metal nanoparticle, a conductive polymer, a conductive fiber, or a carbon nanotube.
  • Conductive ink composition capable of realizing transparent conductive film for display with excellent optical and electrical properties by improving the electrical uniformity by controlling the content of water and cosolvent, which are the constituents of the solvent, to prevent the occurrence of foreign substances recondensing the conductive material. Can be provided.
  • a conductive ink composition capable of realizing a transparent conductive film for a display having improved physical properties by controlling the type and content of the conductive material, the solvent and the additive to improve the dispersibility of the conductive material.
  • FIG. 1 is a flowchart sequentially illustrating a method of manufacturing a conductive film using the conductive ink composition according to the present invention.
  • FIG. 2 is a graph showing uniformity of electrical characteristics of the transparent conductive film of Example 2.
  • Example 3 is a graph showing the uniformity of the electrical properties of the transparent conductive film of Example 4.
  • FIG. 5 is a before (a) and after (b) photograph for explaining the defoaming effect of the conductive ink composition prepared in Example 2.
  • FIG. 5 is a before (a) and after (b) photograph for explaining the defoaming effect of the conductive ink composition prepared in Example 2.
  • the conductive ink composition according to an embodiment of the present invention includes a conductive nanomaterial and a solvent, and the solvent is preferably an aqueous solvent composed of water and co-solvent.
  • the conductive nanomaterial is preferably at least one of a metal nanowire, a metal nanorod or a metal nanostructure of a metal nanoparticle, a conductive polymer, a conductive fiber, or a carbon nanotube, more preferably, the metal nanostructure is effective. More preferably, the metal nanowire is most effective.
  • Metal which is the main material of nanowires, is basically an opaque material or a nano unit, and shows a transparency when its size decreases, and when it decreases below a certain size in the increase of the specific resistance of the metal in the conductive portion, a rapid increase in the specific resistance may occur. Therefore, the metal nanowires may have an average thickness of 10 to 200 nm and an average length of 1 to 100 ⁇ m.
  • Metals of the metal nanostructures are Ag, Au, Cu, Ni, Co, Pd, Ti, V, Mn, Fe, Cr, Zr, Nb, Mo, W, Ru, Cd, Ta, Re, Os, Ir, Al,
  • metals known in the art such as Ga, Ge, In, Sn, Sb, Pb, and Bi, may be used, and two or more of these may be alloyed.
  • Typical metal nanoparticle manufacturing methods include a physical method of physically pulverizing a metal mass and a method of manufacturing using a chemical reaction.
  • the chemical method is described by aerosol method for the injection of high-pressure gas to powder, pyrolysis method for pyrolysis using metal compound and gas reducing agent, heat evaporation of evaporation material to produce powder Evaporative condensation, sol-gel, hydrothermal synthesis, ultrasonic synthesis, microemulsion, liquid phase reduction, and the like.
  • liquid phase reduction method using a dispersing agent and a reducing agent which is considered to be easy to control the formation of nanoparticles and is considered to be the most economical, is most used.
  • any method can be used as long as it can form nanoparticles.
  • the method for producing the nanoparticles by the liquid-phase reduction method is described in Korean Patent Application No. 2006-0074246 filed by the present applicant and the metal nanoparticles described in the patent application has the advantage that the particle size is uniform and the cohesion is minimized
  • the conductive ink containing the metal nanoparticles has an advantage of easily forming a uniform and dense thin film or fine pattern having high conductivity even when fired at a low temperature of 150 ° C. or less for a short time.
  • a preferred embodiment of the present invention is a conductive nano material, it is effective to use a silver nanowire that is relatively excellent in conductivity, inexpensive and capable of mass production.
  • silver nanowires may be manufactured using a polyol reduction method in which silver nitrate and polyvinylpyrrolidone are mainly dissolved in an organic solvent such as ethylene glycol and heated and stirred to reduce them. no.
  • the solvent may be composed of water 80 or more and less than 100% by weight and cosolvent more than 0 and 20 or less by weight, more preferably it is effective that the cosolvent comprises 1 to 10% by weight of the solvent.
  • the solvent of the conductive ink composition has a higher water content than the conventional one, and has an excellent effect of suppressing the generation of bubbles in the coating process for preparing the conductive film by adding a small amount of cosolvent.
  • the organic solvent When the content of the cosolvent, the organic solvent, exceeds 20% by weight, the organic solvent is volatilized during the coating process to change the concentration and viscosity of the conductive ink composition, thereby changing the composition of the ink composition. As the metal reaggregates and the resistance locally changes, the electrical uniformity is different, thereby significantly reducing the physical properties of the conductive film.
  • the conductive ink composition including a solvent having a composition in the above range prevents reaggregation of the conductive nanomaterial through bubble generation control, thereby uniformly distributing the conductive nanomaterial throughout the conductive film, thereby improving electrical and optical properties.
  • the cosolvent is methanol, ethanol, isopropanol, 1-methoxypropanol, butanol, ethylhexyl alcohol, terpineol, ethylene glycol, glycerin, ethyl acetate, butyl acetate, methoxypropyl acetate, carbitol acetate, ethyl carbitol acetate , Methyl cellosolve, butyl cellosolve, diethyl ether, tetrahydrofuran, dioxane, methyl ethyl ketone, acetone, dimethylformamide, 1-methyl-2-pyrrolidone, hexane, heptane, dodecane, paraffin It is preferable to use oil, mineral spirit, benzene, toluene, xylene, chloroform, methylene chloride, carbon tetrachloride, acetonitrile or dimethyl
  • two or more of the above-described cosolvents may be mixed and used.
  • composition of the solvent can remove bubbles without adding an antifoaming agent.
  • the conductive ink composition may further include a binder, a dispersing agent, and a wetting agent.
  • the binder has excellent adhesion to various substrates.
  • binder examples include acrylic resins such as polyacrylic acid or polyacrylic acid esters, cellulose resins such as ethyl cellulose, aliphatic or copolyester resins, vinyl resins such as polyvinyl butyral and polyvinylacetate, polyurethane resins, and polyethers.
  • thermosetting resins such as urea resins, alkyd resins, silicone resins, fluorine resins, olefin resins such as polyethylene, thermoplastic resins such as petroleum and rosin resins, epoxy resins, unsaturated polyester resins, phenol resins, melamine resins, and the like.
  • Acrylic resins of various structures such as resins, ultraviolet rays or electron beam curing types, ethylene-propylene rubbers, styrene-butadiene rubbers, and the like can also be used.
  • an organic compound such as polycarboxylic acid or a derivative thereof may be mainly used.
  • polycarboxylic acids and derivatives thereof include homopolymers and copolymers of acrylates and methacrylates such as alkali metal salts of acrylic acid and methacrylic acid, methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, homopolymers and copolymers of acrylic or methacrylic acid esters such as n-butyl acrylate, n-butyl methacrylate, isobutyl acrylate or isobutyl methacrylate, but are not limited thereto.
  • humectant examples include compounds such as polyethylene glycol, Sufinol series of Air Products, and Tego wet series of Deguessa.
  • the binder is preferably 0.01 to 1 parts by weight, the dispersant is 0.001 to 0.5 parts by weight, and the wetting agent is 0.0001 to 1 part by weight based on 100 parts by weight of the solvent.
  • the conductive ink composition may further include a surfactant, a leveling agent, a thixotropic agent, or a reducing agent.
  • surfactant examples include anionic surfactants such as sodium lauryl sulfate, nonyl phenoxypolyethoxyethanol, and BB such as Dupont's FFS.
  • anionic surfactants and cationic surfactants such as laurylbenzylammonium chloride and amphoteric surfactants such as lauryl betaine and coco betaine may be mentioned.
  • the leveling agent or thixotropic agent As the leveling agent or thixotropic agent, the BYK series of BYK company, the glide series of Degussa, the EFKA 3000 series of EFKA company or the DS of Cognis company For example, the DSX series.
  • the reducing agent may be added to facilitate firing, for example, hydrazine, acetichydrazide, sodium or potassium borohydride, trisodium citrate, and amine compounds such as methyldiethanolamine, dimethylamineborane, Ferrous chloride, metal salts such as ferric lactate, aldehyde compounds such as hydrogen, hydrogen iodide, carbon monoxide, formaldehyde, acetaldehyde, glucose, ascorbic acid, salicylic acid, tannic acid, pyrogallol, hydroquinone Organic compounds, such as these, etc. are mentioned.
  • the conductive ink composition according to another embodiment of the present invention includes a conductive nanomaterial and a solvent, and the solvent may be water, which completely replaces the solvent of the conductive ink composition with water.
  • the conductive nanomaterial is preferably 0.01 to 10 parts by weight, more preferably 1 to 8 parts by weight based on 100 parts by weight of a solvent made of water. If the conductive nanomaterial is less than 0.01 parts by weight, it is difficult to secure the electrical conductivity for implementing the display. If the conductive nano material is more than 10 parts by weight, it may affect the permeability of the conductive film.
  • the transparent conductive film according to one embodiment of the present invention may include the conductive ink composition.
  • the conductive nanomaterial is preferably at least one of a metal nanowire, a metal nanorod or a metal nanostructure of a metal nanoparticle, a conductive polymer, a conductive fiber, or a carbon nanotube, but is not necessarily limited thereto.
  • the solvent is preferably made of water 80 to less than 100% by weight and cosolvent 0 to 20% by weight, it may be made of water only.
  • the cosolvent is methanol, ethanol, isopropanol, 1-methoxypropanol, butanol, ethylhexyl alcohol, terpineol, ethylene glycol, glycerin, ethyl acetate, butyl acetate, methoxypropyl acetate, carbitol Acetate, ethyl carbitol acetate, methyl cellosolve, butyl cellosolve, diethyl ether, tetrahydrofuran, dioxane, methyl ethyl ketone, acetone, dimethylformamide, 1-methyl-2-pyrrolidone, hexane, It is preferably at least one of heptane, dodecane, paraffin oil, mineral spirit, benzene, toluene, xylene, chloroform, methylene chloride, carbon tetrachloride, acetonitrile or
  • the method of manufacturing a transparent conductive film according to an embodiment of the present invention may include a coating step (S10) and a drying step (S20).
  • the coating step S10 is a step of coating a conductive ink composition on a substrate, which is a process of forming a sensing unit of the display.
  • the substrate may be formed of a transparent material such as a plastic film or glass.
  • the plastic film may be polyimide (PI), polyethylene terephthalate (PET), polyethernaphthalate (PEN), polyethersulfone (PES), nylon (Nylon), polytetrafluoroethylene (PTFE), polyether ether Ketones (PEEK), polycarbonates (PC) or polyarylates (PAR) can be used.
  • the substrate may be provided with an opaque material.
  • a metal plate having an insulated surface may be used, or an opaque plastic film, an opaque glass, or an opaque glass fiber material may be applied.
  • a plastic film, a glass substrate, etc. can be used, It is not limited to this.
  • the conductive ink composition includes a conductive nanomaterial and a solvent, and the solvent may be composed of water of 80% or more and less than 100% by weight and cosolvent 0% and 20% or less by weight.
  • the conductive nanomaterial may be at least one of a metal nanowire, a metal nanorod or a metal nanostructure of a metal nanoparticle, a conductive polymer, a conductive fiber, or a carbon nanotube.
  • the average thickness of the metal nanowire is preferably 10 to 200 nm, and the average length is 1 to 100 ⁇ m.
  • the cosolvent is methanol, ethanol, isopropanol, 1-methoxypropanol, butanol, ethylhexyl alcohol, terpineol, ethylene glycol, glycerin, ethyl acetate, butyl acetate, methoxypropyl acetate, carbitol acetate, ethyl carbitol acetate , Methyl cellosolve, butyl cellosolve, diethyl ether, tetrahydrofuran, dioxane, methyl ethyl ketone, acetone, dimethylformamide, 1-methyl-2-pyrrolidone, hexane, heptane, dodecane, paraffin Oil, mineral spirit, benzene, toluene, xylene, chloroform, methylene chloride, carbon tetrachloride, acetonitrile or dimethyl sulfoxide.
  • Conductive ink compositions include inkjet method, flat screen method, spin coating method, bar coater method, roll coating method, flow coating method, doctor blade, disc It can be applied on the substrate using any known coating method of dispensing, gravure printing or flexography printing without limitation.
  • the number of coating can be used repeatedly one or more times. Since the coating properties may be different according to the respective coating methods, it is necessary to optimize the rheology of the conductive ink composition to the coating method.
  • the coating thickness is preferably 10 ⁇ m or less, more preferably 0.1 ⁇ m or more and 5 ⁇ m or less, and thickness adjustment is necessary according to the line width, required resistance, and post-treatment conditions to be implemented.
  • a conductive layer may be formed using a conductive ink composition including a solvent made of water and a conductive nanomaterial by increasing the content of water in a solvent.
  • the conductive nano material is preferably 0.01 to 10 parts by weight based on 100 parts by weight of the solvent, and the conductive nano material is a metal nanostructure of a metal nanowire, a metal nanorod or a metal nanoparticle, a conductive polymer, or a conductive fiber. Or at least one of carbon nanotubes.
  • a conductive ink composition prepared above was applied to the surface of the non-conductive base film, and dried by heat treatment at a temperature of 120 ° C. for 3 minutes to prepare a transparent conductive film.
  • 0.15 wt% of silver nanowire solids was added to a solution containing 9.84 wt% of methanol and 89.9989 wt% of distilled water (18 M ⁇ ), followed by addition of 0.001 wt% of a dispersant, 0.0001 wt% of a wetting agent, and 0.01 wt% of a binder, followed by stirring for 30 minutes.
  • a conductive ink composition was prepared. The conductive ink composition prepared above was applied to the surface of the non-conductive base film, and dried by heat treatment at a temperature of 120 ° C. for 3 minutes to prepare a transparent conductive film.
  • 0.15 wt% of silver nanowire solids were added to a solution containing 19.9678 wt% of methanol and 79.8711 wt% of distilled water (18 M ⁇ ), and then 0.001 wt% of a dispersant, 0.0001 wt% of a wetting agent, and 0.01 wt% of a binder were added thereto, followed by stirring for 30 minutes.
  • a conductive ink composition was prepared.
  • the conductive ink composition prepared above was applied to the surface of the non-conductive base film, and dried by heat treatment at a temperature of 120 ° C. for 3 minutes to prepare a transparent conductive film.
  • 0.15 wt% of silver nanowire solids was added to a solution containing 9.84 wt% of normal propyl alcohol and 89.9989 wt% of distilled water (18 M ⁇ ), followed by adding 0.001 wt% of a dispersant, 0.0001 wt% of a wetting agent, and 0.01 wt% of a binder. Agitated to prepare a conductive ink composition.
  • the conductive ink composition prepared above was applied to the surface of the non-conductive base film, and dried by heat treatment at a temperature of 120 ° C. for 3 minutes to prepare a transparent conductive film.
  • 0.15 wt% of silver nanowire solids was added to a solution containing 19.9678 wt% of normal propyl alcohol and 79.8711 wt% of distilled water (18 M ⁇ ), followed by adding 0.001 wt% of a dispersant, 0.0001 wt% of a wetting agent, and 0.01 wt% of a binder. Agitated to prepare a conductive ink composition.
  • the conductive ink composition prepared above was applied to the surface of the non-conductive base film, and dried by heat treatment at a temperature of 120 ° C. for 3 minutes to prepare a transparent conductive film.
  • 0.15 wt% of silver nanowire solids was added to a solution containing 9.84 wt% of ethanol and 89.9989 wt% of distilled water (18 M ⁇ ), followed by addition of 0.001 wt% of a dispersant, 0.0001 wt% of a wetting agent, and 0.01 wt% of a binder, followed by stirring for 30 minutes.
  • a conductive ink composition was prepared. The conductive ink composition prepared above was applied to the surface of the non-conductive base film, and dried by heat treatment at a temperature of 120 ° C. for 3 minutes to prepare a transparent conductive film.
  • 0.15 wt% of silver nanowire solids was added to a solution containing 19.9678 wt% of ethanol and 79.8711 wt% of distilled water (18 M ⁇ ), followed by addition of 0.001 wt% of a dispersant, 0.0001 wt% of a wetting agent, and 0.01 wt% of a binder, followed by stirring for 30 minutes.
  • a conductive ink composition was prepared. The conductive ink composition prepared above was applied to the surface of the non-conductive base film, and dried by heat treatment at a temperature of 120 ° C. for 3 minutes to prepare a transparent conductive film.
  • 0.15 wt% of silver nanowire solids was added to a solution containing 9.84 wt% of methyl cellosolve and 89.9989 wt% of distilled water (18 M ⁇ ), followed by adding 0.001 wt% of dispersant, 0.0001 wt% of wetting agent, and 0.01 wt% of binder. Stirring for minutes gave a conductive ink composition.
  • the conductive ink composition prepared above was applied to the surface of the non-conductive base film, and dried by heat treatment at a temperature of 120 ° C. for 3 minutes to prepare a transparent conductive film.
  • 0.15 wt% of silver nanowire solids was added to a solution containing 29.951 wt% of ethanol and 69.8879 wt% of distilled water (18 M ⁇ ), followed by adding 0.001 wt% of a dispersant, 0.0001 wt% of a wetting agent, and 0.01 wt% of a binder, followed by stirring for 30 minutes.
  • a conductive ink composition was prepared. The conductive ink composition prepared above was applied to the surface of the non-conductive base film, and dried by heat treatment at a temperature of 120 ° C. for 3 minutes to prepare a transparent conductive film.
  • 0.15 wt% of silver nanowire solids was added to a solution containing 29.951 wt% of ethanol and 69.8879 wt% of distilled water (18 M ⁇ ), followed by adding 0.001 wt% of a dispersant, 0.0001 wt% of a wetting agent, and 0.01 wt% of a binder, followed by stirring for 30 minutes.
  • a conductive ink composition was prepared. The conductive ink composition prepared above was applied to the surface of the non-conductive base film, and dried by heat treatment at a temperature of 120 ° C. for 3 minutes to prepare a transparent conductive film.
  • 0.15 wt% of silver nanowire solids was added to a solution containing 29.951 wt% of methyl cellosolve and 69.8879 wt% of distilled water (18 M ⁇ ), followed by adding 0.001 wt% of a dispersant, 0.0001 wt% of a wetting agent, and 0.01 wt% of a binder. Stirring for minutes gave a conductive ink composition.
  • the conductive ink composition prepared above was applied to the surface of the non-conductive base film, and dried by heat treatment at a temperature of 120 ° C. for 3 minutes to prepare a transparent conductive film.
  • 0.15 wt% of silver nanowire solids was added to a solution containing 29.951 wt% of ethanol and 69.8879 wt% of distilled water (18 M ⁇ ), followed by adding 0.001 wt% of a dispersant, 0.0001 wt% of a wetting agent, and 0.01 wt% of a binder, followed by stirring for 30 minutes.
  • a conductive ink composition was prepared. The conductive ink composition prepared above was applied to the surface of the non-conductive base film, and dried by heat treatment at a temperature of 120 ° C. for 3 minutes to prepare a transparent conductive film.
  • Table 1 shows the average sheet resistance, standard deviation of sheet resistance, transmittance, and haze of the transparent conductive films prepared from the conductive ink compositions of Examples 1 to 8 and Comparative Examples 1 to 4, respectively.
  • Example 1 Average sheet resistance ( ⁇ / ⁇ ) Sheet Resistance Standard Deviation Permeability (%) Haze (%) Example 1 48 12 89.4 2.5 Example 2 48 5 89.4 2.7 Example 3 61 27 90.7 2.7 Example 4 42 8 88.9 2.6 Example 5 44 11 89.3 2.6 Example 6 50 6 89.3 2.6 Example 7 64 31 90.8 2.8 Example 8 146 23 89.6 2.8 Comparative Example 1 96 41 90.3 2.1 Comparative Example 2 109 58 90.1 2.4 Comparative Example 3 80 13 90.4 1.9 Comparative Example 4 71 76 90.0 2.3
  • the transparent conductive film of the embodiment has a lower average sheet resistance and a smaller sheet resistance standard deviation value than the comparative example, which means that the electrical properties of the conductive film are uniform, whereby the conductive ink composition of the embodiment of the present invention.
  • the antifoaming effect was found to be effective.
  • Example 1 in which the solvent was replaced with water, it can be confirmed that the average sheet resistance and the sheet resistance standard deviation are superior to those of the comparative example.
  • FIG. 2 is a graph showing the uniformity of the electrical properties of the transparent conductive film of Example 2
  • Figure 3 is a graph showing the uniformity of the electrical properties of the transparent conductive film of Example 4.
  • the conductive films of Examples 2 and 4 can be confirmed that the standard deviation is measured uniformly.
  • FIG. 4 is an optical microscope photograph of the transparent conductive films of Examples 1, 2, and 4.
  • FIG. It was confirmed that the surfaces of the transparent conductive films of Examples 1, 2, and 4 were uniformly formed.
  • FIG. 5 is a photograph before (a) and after (b) for explaining the defoaming effect of the conductive ink composition prepared in Example 2.
  • FIG. 5 As shown in the photograph of FIG. 5, it was observed that the conductive ink composition suppressed bubble generation as shown in (b) by mixing the solvent of the present invention.
  • the solvent of the conductive ink composition may be modified to implement a transparent conductive film having improved physical properties of optical and electrical properties.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
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  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

La présente invention porte sur une composition d'encre conductrice, sur un film conducteur transparent la comprenant et sur un procédé de fabrication d'un film conducteur transparent. La composition d'encre conductrice comprend un nanomatériau conducteur et un solvant. Le solvant est caractérisé en ce qu'il comprend entre 80 % et 100 % en poids d'eau et entre 0 % et 20 % en poids d'un cosolvant.
PCT/KR2014/005466 2013-06-20 2014-06-20 Composition d'encre conductrice, film conducteur transparent la comprenant et procédé de fabrication de film conducteur transparent Ceased WO2014204265A1 (fr)

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KR1020130071068A KR102169003B1 (ko) 2013-06-20 2013-06-20 전도성 잉크 조성물, 이를 포함하는 투명 전도성 필름 및 투명 전도성 필름의 제조방법

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WO2020149977A1 (fr) * 2019-01-18 2020-07-23 Henkel IP & Holding GmbH Compositions d'encre électroconductrices étirables
CN113308147A (zh) * 2021-06-07 2021-08-27 天津大学 生物可吸收导电油墨及其制备方法、烧结方法
WO2024244909A1 (fr) * 2023-05-31 2024-12-05 深圳市光羿科技有限公司 Encre conductrice, son procédé de préparation et son utilisation

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KR101978334B1 (ko) * 2016-07-13 2019-05-15 주식회사 나노솔루션 도전성 컬러 잉크 조성물 및 이를 포함하는 컬러 대전 방지 필름
KR101903128B1 (ko) * 2016-09-27 2018-11-13 롯데케미칼 주식회사 전도성 파이프
KR102551823B1 (ko) 2021-05-21 2023-07-05 청주대학교 산학협력단 3차원 투명 전도막 제조 방법
KR102455611B1 (ko) 2022-02-10 2022-10-17 지노팩 주식회사 폴리에틸렌 필름 인쇄용 잉크 조성물 및 그 제조방법

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CN104952513A (zh) * 2015-03-06 2015-09-30 苏州深科微新材料科技有限公司 一种基于印刷方式的银纳米线透明导电浆料
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WO2024244909A1 (fr) * 2023-05-31 2024-12-05 深圳市光羿科技有限公司 Encre conductrice, son procédé de préparation et son utilisation

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