CN108250469B - Production process of nano silver wire transparent conductive film - Google Patents
Production process of nano silver wire transparent conductive film Download PDFInfo
- Publication number
- CN108250469B CN108250469B CN201611245540.1A CN201611245540A CN108250469B CN 108250469 B CN108250469 B CN 108250469B CN 201611245540 A CN201611245540 A CN 201611245540A CN 108250469 B CN108250469 B CN 108250469B
- Authority
- CN
- China
- Prior art keywords
- coating
- conductive film
- nano silver
- silver wire
- transparent conductive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
-
- 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
- C09D5/24—Electrically-conducting paints
-
- 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
-
- 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
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
-
- 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
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Laminated Bodies (AREA)
- Non-Insulated Conductors (AREA)
- Manufacturing Of Electric Cables (AREA)
Abstract
The invention relates to a production process of a nano silver wire transparent conductive film, which comprises the following steps: (1) preparing a base material: the selected base material is a PET (polyethylene terephthalate) sheet base, and the prepared PET sheet base is subjected to hardening treatment; (2) coating the prepared coating nano silver wire coating liquid and the prepared protective glue coating liquid: respectively coating the prepared nano silver wire coating liquid and the prepared protective adhesive coating liquid on a PET (polyethylene terephthalate) film base through coating equipment; (3) and (3) drying: drying the coated film; (4) winding: and rolling the produced finished product. The process can effectively improve the rate of the conductive film of the nano silver wire and accelerate the substitution of the conductive film of the nano silver wire for ITO.
Description
Technical Field
The invention belongs to the technical field of production of transparent conductive films, and particularly relates to a production process of a nano silver wire transparent conductive film.
Background
With the delivery area of the domestic capacitive screen exceeding 400 ten thousand square meters in 2013, the required quantity of the ITO conductive glass exceeds 360 ten thousand square meters, and the required quantity of the ITO PET conductive film exceeds 140 ten thousand square meters. From cost analysis of materials upstream in the touch screen industry, ITO material accounts for around 40%. With the development of the touch screen industry, the demand for the ITO material is getting larger and larger, and the price of the rare metal indium required by the ITO material is continuously increased and the rare metal indium is dangerous to be exhausted.
The nano silver wire (SNW) technology is that a nano silver wire ink material is coated on a PET base material or a glass substrate, and then a transparent conductive film with a nano-grade silver wire conductive network pattern is carved and manufactured by utilizing a laser photoetching technology. Due to the special physical mechanism of the manufacture, the diameter of the line width of the nano silver line is very small, about 50nm and far less than 1um, so that the problem of Morie interference does not exist, and the nano silver line can be applied to display screens with various sizes. In addition, due to the small line width, the conductive film made by the silver line technology can achieve higher light transmittance than the film made by the metal grid technology, for example, the film product made by 3M company by adopting a micro-printing method can achieve 89% light transmittance. And thirdly, the nano silver wire film has smaller bending radius compared with a metal grid film, and the resistance change rate is smaller when the nano silver wire film is bent, so that the nano silver wire film has more advantages when being applied to equipment with curved surface display, such as an intelligent watch, a bracelet and the like.
At present, a great deal of research proves that the silver nanowires can be used for preparing transparent electrodes of touch screens, bent Organic Light Emitting Diodes (OLEDs), wearable electronic equipment, electronic skins, bent solar cells and the like, and the performance is still stable after the silver nanowires are bent for 1000 times. In addition, the nano silver wire has wide raw material sources, low price and excellent brittleness and toughness, and is suitable for large-scale industrial production. In conclusion, the nano silver wire is the only ITO substitute with practical application prospect and becomes the leading corner of the flexible screen.
In addition, according to media reports, the star product iWatch attracting attention of apple company adopts the nano silver wire thin film technology of TPK company, and proves that the nano silver wire product indeed has obvious technical advantages and industrial chain stability.
In the prior art, there are many patent documents on the preparation of nano silver wires, such as the patent with the application number of "201510507980.9", and the patent name of "preparation method of nano silver wires"; 201510223402.2 entitled "a nano silver wire dispersion for preparing conductive film". However, the number of patents on the industrialization of the silver nanowire transparent conductive film is very small, and particularly, the method for the industrialization of the silver nanowire transparent conductive film can produce high-quality silver nanowire transparent conductive films with high yield. The patent application number is 201410229462.0, and the patent name is 'a method for producing a transparent conductive film of a nano silver wire'. It can be seen from this patent that there is no layer of protective adhesive coating that can be hardened on the silver nanowire coating, and the produced silver nanowire transparent conductive film is very easy to cause the surface of the transparent conductive film to be scratched to have appearance defects in the production process, the rolling process, the cutting process and the using process, and even to cut off the silver nanowire in the layer, thereby affecting the use of users; and the surface resistivity of the produced nano silver line transparent conductive film is more than 50ohm/sq, so that the application range of the transparent conductive film is narrowed.
Disclosure of Invention
The invention aims to provide a production process of a nano silver wire transparent conductive film, which can effectively improve the photoelectric property of a nano silver wire transparent conductive film by coating a nano silver wire coating liquid on a hardened base material: increase light transmittance, decrease haze and increase mechanical resistance of the film: scratch resistance and rub resistance. The nano silver wire coating liquid and the protective adhesive coating liquid are coated on the PET film base at one time by slope flow extrusion coating and one-time double-layer extrusion coating technology, or the nano silver wire coating liquid and the protective adhesive coating liquid are freely combined by slope flow extrusion coating, micro-concave coating, slit extrusion coating, roller coating or blade coating, so that the production efficiency can be greatly improved, the manpower and material resources are greatly saved, the cost is reduced, the industrial production is favorably realized, the goodness of the nano silver wire conductive film can be effectively improved, and the substitution of the nano silver wire conductive film for ITO is accelerated.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a production process of a nano silver wire transparent conductive film, which comprises the following steps:
(1) preparing a base material: the selected base material is a PET (polyethylene terephthalate) sheet base, and the prepared PET sheet base is subjected to hardening treatment;
(2) coating the prepared coating nano silver wire coating liquid and the prepared protective glue coating liquid: respectively coating the prepared nano silver wire coating liquid and the prepared protective adhesive coating liquid on a PET (polyethylene terephthalate) film base through coating equipment;
(3) and (3) drying: drying the coated film;
(4) winding: rolling the produced finished product;
(5) cutting and packaging: and cutting and packaging the rolled finished product according to the required specification.
According to the production process of the nano silver wire transparent conductive film, the hardening treatment in the step (1) is implemented by coating hardening liquid on one side or two sides of a PET sheet base by adopting micro-concave coating and strip-seam extrusion coating.
The hardening liquid mainly comprises the following components in percentage by weight: 2.5-7% of pure acrylic resin, 7.5-18% of ten-functional polyurethane polymer, 16-26% of difunctional polyurethane polymer, 5-10% of reactive diluent, 1-4% of photoinitiator and 45-55% of solvent.
The active diluent is one or a combination of lauric acid acrylate, tetrahydrofurfuryl acrylate, tripropylene glycol diacrylate, 1, 6-hexanediol diacrylate and 2-hydroxyethyl methacrylate phosphate.
The photoinitiator is one or a combination of methyl benzoylformate, phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide, 1-hydroxy-cyclohexyl-phenyl ketone and 2-hydroxy-2-methyl-1-phenyl-1-acetone.
The solvent is one or a combination of butanone, glycol, acetone and methyl ether.
According to the production process of the nano silver wire transparent conductive film, in the step (1), a hardening coating needs to be coated on the non-nano silver wire coating surface of the PET film base, so that the hardness is more than 1H, the light transmittance is increased by 0.5-3% relative to the non-hardened PET film base, the haze is reduced by 0.2-0.8% relative to the non-hardened PET film base, the light transmittance is 90-93%, the haze is less than or equal to 0.7%, the thickness of the PET film base is 25-200 μm, the PET film base is hot-pressed for 20-40 seconds at the temperature of 150-200 ℃ and the pressure of 5MPa, and the surface of the PET film base is free of cracks.
According to the production process of the transparent conductive film of the nano silver wire, in the step (2), the preparation method of the coating liquid of the nano silver wire comprises the following steps: dissolving a nano silver wire with the diameter of 10-100 nm and the length of less than or equal to 200 mu m in sol with the solid content of 0.5-10 wt% and the average particle size of 10-100 nm, so that 1-10 g of silver is contained in every 1Kg of nano silver wire coating liquid; the nano silver wire coating liquid has a solid content of 0.5-11 wt%, a viscosity of 1-25 cps, and nanoThe coating weight of the coating of the silver wire is 10-50 mL/m2。
According to the production process of the nano silver wire transparent conductive film, in the step (2), the protective adhesive coating liquid is metal oxide sol, the pH of the metal oxide sol is 3-6, the solid content is 0.1-10 wt%, and the coating weight of the protective adhesive coating is 10-50 mL/m2。
According to the production process of the nano silver wire transparent conductive film, in the step (2), the coating mode is slope extrusion coating, and the nano silver wire coating liquid and the protective glue coating liquid are coated on the PET film substrate at one time through a one-time double-layer extrusion coating technology.
According to the production process of the nano silver wire transparent conductive film, in the step (2), the coating mode is micro gravure coating, roll coating, slit extrusion coating or knife coating, but only one layer can be coated at one time.
According to the production process of the nano silver wire transparent conductive film, in the step (3), the drying temperature in the drying process is more than 20 ℃, and the drying time is more than 4 minutes.
According to the production process of the nano silver wire transparent conductive film, in the step (4), the finished product is as follows: the prepared light transmittance is 75-92%, the haze is less than or equal to 3%, the surface resistivity is 10-300 ohm/sq, the hardness is 3-5H, and the surface resistivity is not changed any more after a heating binding test of a binding strip at 150-200 ℃ for 20-30 seconds.
Compared with the prior art, the invention has the beneficial effects that:
the process of the invention can effectively improve the photoelectric property of the nano silver wire transparent conductive film by coating the nano silver wire coating liquid on the hardened base material: increase light transmittance, decrease haze and increase mechanical resistance of the film: scratch resistance and rub resistance. And through the free combination of a plurality of coating modes of slope flow type extrusion coating, micro-concave coating, slit type extrusion coating, roller coating or knife coating, the production efficiency can be greatly improved, manpower and material resources are greatly saved, the cost is reduced, the industrialized production is favorably realized, the goodness of the nano silver wire conductive film can be effectively improved, and the substitution of the nano silver wire conductive film for ITO is accelerated.
Drawings
FIG. 1 is a cross-sectional structure view of a silver nanowire transparent conductive film; in fig. 1, the following are shown from top to bottom: 11. a protective adhesive layer; 12. a layer of silver nanowires; 3, PET film base; 14. hardening the coating;
FIG. 2 is a cross-sectional view of a slide extrusion coating when the coating angle α is a positive angle, i.e., α > 0; FIG. 21 shows a protective paste coating solution flowing out of a slit; 2. the coating liquid is the nano silver wire coating liquid flowing out from the slit; 3. is a PET film base; 4. is a slope flow type extrusion coating head;
FIG. 3 is a cross-sectional view of a slide extrusion coating with a negative coating angle α, i.e., α < 0; FIG. 3, 1 shows a protective paste coating solution flowing out of a slit; 2. the coating liquid is the nano silver wire coating liquid flowing out from the slit; 3. is a PET film base; 4. is a gradient flow type extrusion coating head.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the invention thereto.
Example 1
A production method of a nano silver wire transparent conductive film comprises the following steps:
(1) preparing a base material: coating the prepared hardening coating liquid on a PET film base, wherein the hardening layer coating liquid mainly comprises the following components in percentage by weight: 7% of pure acrylic resin, 11% of decafunctional polyurethane resin, 20% of difunctional polyurethane resin, 6% of lauric acrylate, 6% of methyl benzoylformate and 50% of butanone; hardening the film base; the coating surface hardness of the PET sheet base non-nano silver wire is more than 1H; the light transmittance is 92 percent, the haze is less than or equal to 0.7 percent, the thickness of the PET film base is 100 mu m, the dyne value of the coating surface is more than or equal to 50, and no crack exists on the surface after hot pressing at 190 ℃ and 5MPa for 30 seconds; placing the prepared PET film base on a film supply frame;
(2) coating a nano silver wire coating liquid and a protective adhesive coating liquid: respectively coating the prepared nano silver wire coating liquid and the prepared protective adhesive coating liquid on a PET (polyethylene terephthalate) film base through coating equipment; the preparation method of the nano silver wire coating liquid comprises the following steps: nano silver with the diameter of 10-100 nm and the length of less than or equal to 200 mu mDissolving the silver wire in sol with the solid content of 0.5-10 wt% and the average particle size of 10-100 nm to ensure that 1-10 g of silver is contained in each 1Kg of nano silver wire coating liquid; the coating liquid for the nano silver wire has a solid content of 0.5-11 wt%, a viscosity of 1-25 cps, and a coating weight of 30mL/m2。
The protective adhesive coating liquid is metal oxide sol, the pH of the metal oxide sol is 3-6, the solid content is 0.1-10 wt%, and the coating weight of the protective adhesive coating is 30mL/m2;
(3) And (3) drying: and (4) drying the coated film in a drying channel. The drying condition is that T is more than or equal to 20 ℃ at the temperature of 130 ℃ and the time is 2 min.
(4) Winding: and winding the produced finished product by a winding machine.
The performance indexes of the finished transparent conductive film produced by the invention are shown in the following table 1:
table 1 performance index of the finished transparent conductive film produced in example 1 of the present invention
Example 2
The main steps and method of this example are the same as those of example 1, and a description thereof will not be repeated, except that (i) the composition of the hardened layer coating liquid is: 5% of pure acrylic resin, 13% of ten-functional polyurethane resin, 26% of difunctional polyurethane resin, 6% of tetrahydrofurfuryl acrylate, 3% of phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide and 47% of ethylene glycol; coating weight of the nano silver wire coating is 10mL/m2。
The performance indexes of the finished transparent conductive film produced by the invention are shown in the following table 2:
table 2 performance index of the finished transparent conductive film produced in example 2 of the present invention
Example 3
The main steps and method of this example are the same as those of example 1, and a description thereof will not be repeated, except that (i) the composition of the hardened layer coating liquid is: 5% of pure acrylic resin, 18% of ten-functional polyurethane polymer, 23% of difunctional polyurethane polymer, 5% of tripropylene glycol diacrylate, 3% of 1-hydroxy-cyclohexyl-phenyl ketone and 46% of acetone; coating weight of the nano silver wire coating is 50mL/m2。
The performance indexes of the finished transparent conductive film produced by the invention are shown in the following table 3:
table 3 performance index of the finished transparent conductive film produced in example 3 of the present invention
Example 4
The main steps and method of this example are the same as those of example 1, and a description thereof will not be repeated, except that (i) the composition of the hardened layer coating liquid is: 6% of pure acrylic resin, 15% of decafunctional polyurethane polymer, 21% of difunctional polyurethane polymer, 10% of 2-hydroxyethyl methacrylate phosphate, 3% of 2-hydroxy-2-methyl-1-phenyl-1-acetone and 45% of methyl ether; ② the coating weight of the protective adhesive coating is 10mL/m2。
The performance indexes of the finished transparent conductive film produced by the invention are shown in the following table 4:
table 4 performance index of the finished transparent conductive film produced in example 4 of the present invention
Example 5
The main steps and method of this example are the same as those of example 1, and a description thereof will not be repeated, except that (i) the composition of the hardened layer coating liquid is: 4.5 percent of pure acrylic resin and ten-functional agglomerated urethane resin14 percent of bifunctional polyurethane resin, 24 percent of difunctional polyurethane resin, 7 percent of lauric acrylate, 4 percent of 2-hydroxy-2-methyl-1-phenyl-1-acetone and 46.5 percent of butanone; ② the coating weight of the protective adhesive coating is 50mL/m2。
The performance indexes of the finished transparent conductive film produced by the invention are shown in the following table 5:
TABLE 5 Performance index of the transparent conductive film product produced in example 5 of the present invention
Example 6
The main steps and method of this example are the same as those of example 1, and a description thereof will not be repeated, except that (i) the composition of the hardened layer coating liquid is: 2.5 percent of pure acrylic resin, 15 percent of decafunctional polyurethane resin, 26 percent of difunctional polyurethane resin, 7 percent of tetrahydrofurfuryl acrylate, 3 percent of 1-hydroxy-cyclohexyl-phenyl ketone and 46.5 percent of ethylene glycol; ② the drying temperature is 20 ℃, and the drying time is 20 minutes.
The performance indexes of the finished transparent conductive film produced by the invention are shown in the following table 6:
table 6 performance index of the finished transparent conductive film produced in example 6 of the present invention
Example 7
The main steps and method of this example are the same as those of example 1, and a description thereof will not be repeated, except that (i) the composition of the hardened layer coating liquid is: 6% of pure acrylic resin, 15% of decafunctional polyurethane polymer, 15% of difunctional polyurethane polymer, 5% of tripropylene glycol diacrylate, 4% of phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide and 55% of methyl ether; ② the drying temperature is 70 ℃, and the drying time is 4 minutes.
The performance indexes of the finished transparent conductive film produced by the invention are shown in the following table 7:
table 7 performance indexes of the finished transparent conductive film produced in example 7 of the present invention
Example 8
The main steps and method of this example are the same as those of example 1, and a description thereof will not be repeated, except that (i) the composition of the hardened layer coating liquid is: 7% of pure acrylic resin, 8% of decafunctional group polyurethane resin, 26% of difunctional group polyurethane resin, 10% of 1, 6-hexanediol diacrylate, 4% of methyl benzoylformate and 45% of butanone; ② the drying temperature is 130 ℃, and the drying time is 4 minutes.
The performance indexes of the finished transparent conductive film produced by the invention are shown in the following table 8:
table 8 performance index of the finished transparent conductive film produced in example 8 of the present invention
Example 9
The main steps and method of this example are the same as those of example 1, and a description thereof will not be repeated, except that the composition of the hardened layer coating liquid is: 6 percent of pure acrylic resin, 13.5 percent of decafunctional polyurethane resin, 20 percent of difunctional polyurethane resin, 6 percent of tetrahydrofurfuryl acrylate, 4 percent of methyl benzoylformate and 50.5 percent of glycol; ② the drying temperature is 70 ℃, and the drying time is 20 minutes.
The performance indexes of the finished transparent conductive film produced by the invention are shown in the following table 9:
TABLE 9 Performance index of the transparent conductive film product produced in example 9 of the present invention
Example 10
The main steps and method of this example are the same as those of example 1, and a description thereof will not be repeated, except that the composition of the hardened layer coating liquid is: 6% of pure acrylic resin, 15% of ten-functional polyurethane polymer, 24% of difunctional polyurethane polymer, 7.5% of 2-hydroxyethyl methacrylate phosphate, 1.5% of phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide and 46% of acetone; ② the drying temperature is 130 ℃, and the drying time is 20 minutes.
The performance indexes of the finished transparent conductive film produced by the invention are shown in the following table 10:
TABLE 10 Performance index of the transparent conductive film product produced in example 10 of the present invention
Comparative example 1
The main steps and process of this comparative example are the same as those of example 5, and are not repeated here, except that the PET substrate used is of the same type as that of example 5 but is not hardened.
The performance indexes of the finished transparent conductive film produced in the comparative example are shown in table 11 below:
TABLE 11 Performance index of finished transparent conductive film produced in comparative example 1
Comparative example 2
The main steps and process of this comparative example are the same as those of example 2, and are not repeated here, except that the PET substrate used is of the same manufacturer as that of example 2 but is not hardened.
The performance indexes of the finished transparent conductive film produced in the comparative example are shown in table 12 below:
TABLE 12 Performance index of the finished transparent conductive film produced in comparative example 2
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.
Claims (9)
1. A production process of a nano silver wire transparent conductive film is characterized by comprising the following steps:
(1) preparing a base material: the selected base material is a PET (polyethylene terephthalate) sheet base, and the prepared PET sheet base is subjected to hardening treatment;
(2) coating the prepared coating nano silver wire coating liquid and the prepared protective glue coating liquid: coating the prepared nano silver wire coating liquid and the prepared protective adhesive coating liquid on a PET film base through coating equipment;
(3) and (3) drying: drying the coated film;
(4) winding: rolling the produced finished product;
in the step (1), a hardening coating needs to be coated on the non-nano silver wire coating surface of the PET sheet base, so that the hardness of the PET sheet base is more than 1H, the light transmittance is increased by 0.5-3% relative to the non-hardened PET sheet base, the haze is reduced by 0.2-0.8% relative to the non-hardened PET sheet base, the light transmittance is 90% -93%, the haze is less than or equal to 0.7%, the thickness of the PET sheet base is 25-200 mu m, hot pressing is carried out at the temperature of 150-200 ℃ and under the pressure of 5MPa for 20-40 seconds, and the surface of the PET sheet base does not have cracks.
2. The process for producing a transparent conductive film of silver nanowires according to claim 1, wherein: in the step (1), the hardening treatment is implemented by coating hardening liquid on one side or both sides of the PET sheet base by adopting micro-concave coating and slit extrusion coating.
3. The process for producing a silver nanowire transparent conductive film according to claim 2, characterized in that: the hardening liquid mainly comprises the following components in percentage by weight: 2.5-7% of pure acrylic resin, 7.5-18% of ten-functional polyurethane polymer, 16-26% of difunctional polyurethane polymer, 5-10% of reactive diluent, 1-4% of photoinitiator and 45-55% of solvent.
4. The process for producing a transparent conductive film of silver nanowires according to claim 1, wherein: in the step (2), the preparation method of the nano silver wire coating liquid comprises the following steps: dissolving a nano silver wire with the diameter of 10-100 nm and the length of less than or equal to 200 mu m in sol with the solid content of 0.5-10 wt% and the average particle size of 10-100 nm, so that 1-10 g of silver is contained in every 1Kg of nano silver wire coating liquid; the coating liquid for the nano-silver wire has a solid content of 0.5-11 wt%, a viscosity of 1-25 cps, and a coating weight of 10-50 mL/m2。
5. The process for producing a transparent conductive film of silver nanowires according to claim 1, wherein: in the step (2), the protective adhesive coating liquid is metal oxide sol, the pH of the metal oxide sol is 3-6, the solid content is 0.1-10 wt%, and the coating weight of the protective adhesive coating is 10-50 mL/m2。
6. The process for producing a transparent conductive film of silver nanowires according to claim 1, wherein: in the step (2), the coating mode is slide extrusion coating, and the nano silver wire coating liquid and the protective adhesive coating liquid are coated on the PET film base at one time by a one-time double-layer extrusion coating technology.
7. The process for producing a transparent conductive film of silver nanowires according to claim 1, wherein: in the step (2), the coating mode of the coating is micro gravure coating, roll coating, slit extrusion coating or knife coating, only one layer can be coated at one time, and the coating is finished by two times.
8. The process for producing a transparent conductive film of silver nanowires according to claim 1, wherein: in the step (3), the drying temperature in the drying process is above 20 ℃, and the drying time is more than 4 minutes.
9. The process for producing a transparent conductive film of silver nanowires according to claim 1, wherein: in the step (4), the finished product is: the prepared light transmittance is 75-92%, the haze is less than or equal to 3%, the surface resistivity is 10-300 ohm/sq, the hardness is 3-5H, and the surface resistivity is not changed any more after a heating binding test of a binding strip at 150-200 ℃ for 20-30 seconds.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611245540.1A CN108250469B (en) | 2016-12-29 | 2016-12-29 | Production process of nano silver wire transparent conductive film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611245540.1A CN108250469B (en) | 2016-12-29 | 2016-12-29 | Production process of nano silver wire transparent conductive film |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108250469A CN108250469A (en) | 2018-07-06 |
CN108250469B true CN108250469B (en) | 2021-04-30 |
Family
ID=62719153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201611245540.1A Active CN108250469B (en) | 2016-12-29 | 2016-12-29 | Production process of nano silver wire transparent conductive film |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108250469B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109166668B (en) * | 2018-08-16 | 2021-02-09 | 深圳市云记科技有限公司 | Method for manufacturing conductive film |
CN109694663B (en) * | 2018-12-05 | 2021-10-12 | 深圳市摩码科技有限公司 | High-light-transmittance protective film and preparation method thereof |
CN110580855B (en) * | 2019-09-17 | 2022-08-30 | 合肥鑫晟光电科技有限公司 | Chip on film, chip on film substrate, manufacturing method thereof and display device |
CN114694877A (en) * | 2020-12-28 | 2022-07-01 | 乐凯华光印刷科技有限公司 | Nano-silver wire composite transparent conductive film |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104112544A (en) * | 2014-05-14 | 2014-10-22 | 中国科学院合肥物质科学研究院 | Preparation method for silver nano wire transparent conductive film capable of preventing corrosion of hydrogen sulfide gas |
CN104992752A (en) * | 2015-07-16 | 2015-10-21 | 城步新鼎盛电子科技有限公司 | Production method of silver nanowire transparent conductive film |
CN105304164A (en) * | 2015-10-09 | 2016-02-03 | 重庆文理学院 | Easy-post-processing water-based silver nano-wire ink and film preparation method thereof |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102117250B1 (en) * | 2013-09-23 | 2020-06-02 | 솔브레인 주식회사 | Composition for preparing transparent conductive layer and manufacturing method of transparent conductive structure using the same |
-
2016
- 2016-12-29 CN CN201611245540.1A patent/CN108250469B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104112544A (en) * | 2014-05-14 | 2014-10-22 | 中国科学院合肥物质科学研究院 | Preparation method for silver nano wire transparent conductive film capable of preventing corrosion of hydrogen sulfide gas |
CN104992752A (en) * | 2015-07-16 | 2015-10-21 | 城步新鼎盛电子科技有限公司 | Production method of silver nanowire transparent conductive film |
CN105304164A (en) * | 2015-10-09 | 2016-02-03 | 重庆文理学院 | Easy-post-processing water-based silver nano-wire ink and film preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
CN108250469A (en) | 2018-07-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108250469B (en) | Production process of nano silver wire transparent conductive film | |
KR102581899B1 (en) | Transparent electrodes and electronic devices including the same | |
CN105273471B (en) | Water-soluble nano silver conductive coating | |
CN104761957B (en) | Transparent conductive ink, preparation method thereof and production method for transparent conductive film | |
CN106128564B (en) | The preparation method of PET/ nano-silver thread nesa coatings through illumination sintering processes | |
CN102270524A (en) | Silver nano-wire transparent conducting film based on thermoplastic transparent polymer and preparation method thereof | |
CN109390080A (en) | A kind of silver nanowires and transparent conductive oxide composite transparent conductive film and its application | |
CN107316708A (en) | The preparation method of the peelable resin compounded transparent conductive film of nano silver wire | |
CN111014719A (en) | High-purity silver nanowire, preparation method thereof and silver nanowire conductive film | |
CN105345022A (en) | Purification method for silver nanowire | |
CN104485157A (en) | Graphene composite material and preparation method thereof | |
CN213844777U (en) | Nano-silver wire composite transparent conductive film | |
CN107230516A (en) | Flexible conductive film and the photoelectric device comprising it | |
CN113793883A (en) | Preparation method of solar cell electrode | |
JP2012111141A (en) | Transparent conductive film, and liquid crystal display element, organic el element and organic thin film solar cell using the same | |
CN209168759U (en) | A kind of silver nanowires and transparent conductive oxide composite transparent conductive film | |
CN108447617A (en) | A method of protection nano-silver thread transparent conductive film | |
CN111161906A (en) | Low-resistance transparent conductive film and preparation method thereof | |
KR102298165B1 (en) | Embedded transparent electrode substrate and method for manufacturing thereof | |
TWI500048B (en) | Transparent conductive film composite and transparent conductive film | |
CN207947080U (en) | A kind of high nano-silver thread conductive film | |
CN102637103B (en) | Conducting layer of touch screens and manufacturing process of conducting layer | |
CN104900302A (en) | Glass-based nano-silver-wire transparent conductive film and preparation method | |
CN209543944U (en) | One kind having the composite transparent conductive film of flexible " sandwich " sandwich structure | |
CN109949974B (en) | Covalently bonded PET-based nano silver wire graphene composite transparent flexible conductive film and preparation method thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |