CN111315053A - Electrical heating glass of nano silver wire conductive film and preparation method thereof - Google Patents
Electrical heating glass of nano silver wire conductive film and preparation method thereof Download PDFInfo
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- CN111315053A CN111315053A CN202010099853.0A CN202010099853A CN111315053A CN 111315053 A CN111315053 A CN 111315053A CN 202010099853 A CN202010099853 A CN 202010099853A CN 111315053 A CN111315053 A CN 111315053A
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- polycarbonate sheet
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
- H05B3/86—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields the heating conductors being embedded in the transparent or reflecting material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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Abstract
The invention relates to electric heating glass of a nano silver wire conducting film and a preparation method thereof, and the electric heating glass comprises the following steps: taking a polycarbonate plate, and horizontally placing and fixing the polycarbonate plate; taking a nano silver wire solution, pouring the nano silver wire solution on a screen plate, and coating the surface of the polycarbonate plate with the nano silver wire solution through the screen plate; surface drying the nano silver wire solution to form a nano silver wire area on the polycarbonate sheet; testing the surface resistance of the polycarbonate sheet, and judging whether the surface resistance is between 10 and 15 ohms; if the surface resistance of the polycarbonate sheet is between 10 and 15 ohms, performing a hot bending process on the polycarbonate sheet, and performing hot bending molding on the polycarbonate sheet; and arranging silver paste and electrodes in the nano silver wire area on the polycarbonate sheet after hot bending forming. The electric heating glass of the nano silver wire conducting film prepared by the invention can effectively reduce weight by more than 50%, and has the characteristics of high visual field definition, high design freedom, fast heating, good heating uniformity and the like.
Description
Technical Field
The invention relates to electric heating glass and a preparation method thereof, in particular to electric heating glass of a nano silver wire conductive film and a preparation method thereof.
Background
At present, the automobile rear windshield on the market is usually electric heating glass, and the electric heating glass can generate heat when being electrified to remove frost and fog condensed on the automobile rear windshield.
The structure of electric heating glass in the prior art usually comprises inner-layer glass, outer-layer glass, a polyvinyl butyral (PVB) film and tungsten filaments, wherein the PVB film is arranged between the inner-layer glass and the outer-layer glass, and the tungsten filaments are arranged on the PVB film and are electrified and heated to achieve the effects of heating, defrosting and demisting.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
the electric heating glass in the prior art has the defects of large mass, poor visual field, single style, slow heating in winter and the like, and does not meet the current trend of light weight, energy conservation and emission reduction of automobiles.
Disclosure of Invention
In order to solve the technical problems in the prior art, the embodiment of the invention provides electric heating glass of a nano silver wire conductive film and a preparation method thereof. The specific technical scheme is as follows:
in a first aspect, a method for preparing an electrically heated glass of a silver nanowire conductive film is provided, which comprises the following steps:
taking a polycarbonate plate, and horizontally placing and fixing the polycarbonate plate;
step (b), taking a nano silver wire solution, pouring the nano silver wire solution on a screen plate, and coating the surface of the polycarbonate plate with the nano silver wire solution through the screen plate;
step (c), surface drying the nano silver wire solution to form a nano silver wire area on the polycarbonate plate;
step (d), testing the surface resistance of the polycarbonate sheet, and judging whether the surface resistance is between 10 and 15 ohms;
step (e), if the surface resistance of the polycarbonate sheet is between 10 and 15 ohms, performing hot bending process on the polycarbonate sheet, and hot bending the polycarbonate sheet for forming;
step (f), arranging silver paste and electrodes in a nano silver wire area on the polycarbonate sheet after hot bending forming;
step (g), spraying an organic siloxane coating on the surface of the polycarbonate sheet, and drying and curing the surface; and
and (h) checking whether the polycarbonate sheet is qualified.
In a first possible implementation manner of the first aspect, in the step (a), the polycarbonate sheet is horizontally placed on a table top of the screen printing machine and fixed on the table top through vacuum adsorption.
In combination with the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, in the step (b), the method for coating the silver nanowire solution on the surface of the polycarbonate sheet through the mesh plate comprises the following steps:
correspondingly fixing the screen plate and the polycarbonate plate on a screen printing machine;
pouring the nano silver wire solution into a non-silk-screen printing area of the screen plate; and
and (3) coating the nano silver wire solution on the surface of the polycarbonate sheet uniformly, and removing the redundant nano silver wire solution.
With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, in the step (c), the method for surface-drying the silver nanowire solution includes the steps of:
heating a transmission belt matched with the screen printing machine to 120 ℃; and
and (3) placing the polycarbonate sheet on a conveyor belt for conveying, controlling the conveying time to be 3-5 minutes, heating the nano silver wire solution through the conveyor belt, accelerating the volatilization of the solvent in the nano silver wire solution, and drying the nano silver wire solution.
In a fourth possible implementation manner of the first aspect, in the step (d), if the surface resistance of the polycarbonate sheet is not between 10 and 15 ohms, the polycarbonate sheet does not meet the design requirement, and is determined as a failure, and the operations of the steps (a) to (c) are performed again.
In a fifth possible implementation manner of the first aspect, in the step (e), when the polycarbonate sheet is subjected to the hot bending process, the hot bending temperature is 125-.
In a sixth possible implementation manner of the first aspect, in the step (g), the curing temperature of the organosiloxane-based coating at the time of curing is 130 degrees celsius, and the curing time is 4 hours.
In a seventh possible implementation manner of the first aspect, in the step (h), the items for inspecting whether the polycarbonate sheet is qualified include whether the adhesion strength of the surface adhesion of the polycarbonate sheet is 1 or 0 grade, whether the light transmittance of the polycarbonate sheet is greater than 80%, whether the haze of the polycarbonate sheet is less than 2%, and whether the heating effect of the polycarbonate sheet meets the design requirement.
In an eighth possible implementation manner of the first aspect, the solvent in the nano silver wire solution is 1% by weight of cyclohexanol, and the average diameter of the cyclohexanol is 25nm and the average length is 15 μm; and/or the mesh number of the mesh plate is 250-350 meshes; and/or the solids content of the organosiloxane in the organosiloxane-based coating is from 17% to 19%.
In a second aspect, there is provided an electrically heated glass for a silver nanowire conductive film produced by the method for producing an electrically heated glass for a silver nanowire conductive film according to any one of the first aspects, wherein the electrically heated glass for a silver nanowire conductive film comprises:
a polycarbonate sheet having a nano-silver wire region;
the nano silver wire is arranged on the polycarbonate plate and is positioned in the nano silver wire area;
the electrode is arranged on the polycarbonate plate, is positioned in the nano silver wire area and is connected with the nano silver wire; and
and the organic siloxane coating is coated on the polycarbonate plate and covers the nano silver wires and the electrodes.
Compared with the prior art, the invention has the advantages that:
according to the preparation method of the electric heating glass of the nano silver wire conductive film, the nano silver wires are printed on the surface of the polycarbonate plate in a silk screen mode, the plate is placed into the corresponding die to be subjected to hot bending forming, the required single-curved/double-curved shape is obtained, then the electrodes are connected, and finally the organosilicone coating is used for surface hardening, so that the electric heating glass of the nano silver wire conductive film is obtained.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart illustrating steps of a method for manufacturing electrically heated glass of a silver nanowire conductive film according to an embodiment of the present invention.
FIG. 2 is a schematic view of an electrically heated glass of a silver nanowire conductive film according to two embodiments of the present invention
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In an embodiment of the present invention, fig. 1 is a schematic flow chart of steps of a method 1 for manufacturing an electrically heated glass of a silver nanowire conductive film according to an embodiment of the present invention. As shown in fig. 1, the method 1 for preparing the electrically heated glass of the nanosilver wire conductive film comprises the following steps 101-109, wherein:
and step 101, installing and fixing a polycarbonate plate. Taking a polycarbonate plate, and horizontally placing and fixing the polycarbonate plate.
Specifically, the polycarbonate sheet is mainly used as the automobile rear windshield, so the size of the polycarbonate sheet can be selected according to the actual size required by the automobile rear windshield, and after the polycarbonate sheet is selected, the polycarbonate sheet is horizontally placed on the table top of the screen printing machine and is fixed on the table top through vacuum adsorption of a vacuum adsorption device on the screen printing machine. Preferably, before the polycarbonate sheet is horizontally placed and fixed, the surface of the polycarbonate sheet is wiped clean by using tools such as alcohol and non-woven fabrics, so as to prevent impurities on the polycarbonate sheet from affecting the subsequent production of the nano silver wires.
Specifically, the solvent in the nano silver wire solution is cyclohexanol with a weight percentage of 1%, and the average diameter of the cyclohexanol is 25nm, and the average length of the cyclohexanol is 15 μm, but not limited thereto, and those skilled in the art may also select other nano silver wire solutions with suitable solvents according to actual needs. The mesh number of the mesh plate used in the coating of the nano silver wire solution is preferably 250-350 mesh, such as 250 mesh, 300 mesh or 350 mesh, but not limited thereto, and those skilled in the art can select other mesh plates according to the actual coating requirement.
When the nano silver wire solution is coated, the screen plate and the polycarbonate plate are correspondingly fixed on the screen printing machine, then the nano silver wire solution is poured into a non-screen printing area of the screen plate, and the nano silver wire solution is coated, wherein the coating mode can be that a scraper is used to slightly coat the nano silver wire solution from right to left, so that the nano silver wire solution is uniformly coated on the surface of the screen printing area of the polycarbonate plate, but not limited thereto. After the smearing is completed, the excess silver nanowire solution is removed, the removal mode can be to tightly press the scraper, and the excess silver nanowire is forcibly scraped from left to right, but the method is not limited to this.
And 103, surface drying the nano silver wire solution. And (4) surface drying the nano silver wire solution to form a nano silver wire area on the polycarbonate plate.
Specifically, the transmission belt matched with the screen printer is heated to 120 ℃, the scraped nano silver wire solution is similar to a layer of film to cover the surface of the polycarbonate plate, and the solvent volatilization can be accelerated at 120 ℃, so that the polycarbonate plate is placed on the transmission belt to be transmitted, the nano silver wire solution can be heated through the transmission belt, the solvent volatilization in the nano silver wire solution is accelerated, and the nano silver wire solution is dried on the surface to form a conductive film.
Meanwhile, the conveying time of the polycarbonate sheet is controlled to be 3-5 minutes, such as 3 minutes, 4 minutes or 5 minutes, so as to ensure that the silver nanowire solution is completely surface-dried, and damage to the appearance of the conductive film in the subsequent moving and operating processes is prevented. It should be noted that the conveying time of the conveyor belt matched with the screen printer in the prior art is generally 3-5 minutes.
Specifically, the method comprises a first detection step, wherein the surface resistance of the polycarbonate sheet is tested, whether the surface resistance is between 10 and 15 ohms is judged, if the surface resistance is between 10 and 15 ohms, the polycarbonate sheet meets the design requirement, the polycarbonate sheet is judged to be qualified, and the subsequent steps are continued to be operated. If the resistance value is not between 10 and 15 ohms, the polycarbonate sheet does not meet the design requirements, the polycarbonate sheet is judged to be unqualified, and unnecessary cost waste caused by continuous transfer to a subsequent process is avoided, at this time, the operations from the step 101 to the step 103 can be selected to be performed again, or the operations can be performed again after the surface of the polycarbonate sheet is cleaned.
The surface resistance testing process of the polycarbonate sheet is a conventional technical means in the art, and the detailed description is omitted here.
And 105, hot bending and forming. And if the surface resistance of the polycarbonate sheet is between 10 and 15 ohms, carrying out a hot bending process on the polycarbonate sheet, and carrying out hot bending forming on the polycarbonate sheet.
Specifically, the polycarbonate sheet is sent into an oven and placed in a mold, and the polycarbonate sheet is heated by the oven to be subjected to hot bending forming. Preferably, the hot bending temperature of the oven is 125-. More preferably, after the hot bending, the method further comprises taking out the polycarbonate sheet for observation and analysis, and measuring the surface resistance again, wherein the surface resistance is required to be almost unchanged from the previous measurement result, but the method is not limited to the above.
And 106, arranging silver paste and electrodes. And arranging silver paste and electrodes in the nano silver wire area on the polycarbonate sheet after hot bending forming.
Specifically, silver paste and electrodes are arranged in a nano silver wire area on the polycarbonate sheet after hot bending forming, the material of the electrodes can be copper, and the copper electrodes are used for electrifying the conductive film, so that the conductive film generates heat. The arrangement method of the silver paste and the electrodes is a conventional technical means in the art, and is not described herein in detail.
Specifically, the surface of the polycarbonate sheet is coated with the organosiloxane coating, and the solid content of the organosiloxane in the organosiloxane coating is preferably 17% to 19%, for example, 17%, 18% or 19%, but not limited thereto. And (3) drying the surface of the polycarbonate plate, and then sending the polycarbonate plate into an oven for curing to ensure that the organosiloxane coating is completely attached to the surface of the polycarbonate plate so as to increase the surface hardness of the polycarbonate plate and protect the polycarbonate plate. Preferably, the curing temperature of the oven is set to 130 degrees celsius, and the curing time is set to 4 hours, but not limited thereto.
And step 108, checking whether the product is qualified. And (5) checking whether the polycarbonate sheet is qualified.
Specifically, whether the bonding strength of the surface adhesive force of the polycarbonate sheet is 1 or 0 grade or not is detected, if so, the surface adhesive force of the polycarbonate sheet is detected to be qualified, and if not, the surface adhesive force of the polycarbonate sheet is judged to be unqualified.
Detecting whether the light transmittance of the polycarbonate sheet is greater than 80% and the haze is less than 2%, if so, determining that the light transmittance and the haze of the polycarbonate sheet are qualified, otherwise, determining that the effect of coating the nano silver wires in the step 102 is poor, or a problem occurs in the process of coating the organosiloxane coating in the step 107, and the field of view is affected when the polycarbonate sheet is installed on a rear windshield of a vehicle body, so that the light transmittance and the haze of the polycarbonate sheet are judged to be unqualified.
The method comprises the steps of switching on a power supply of the polycarbonate plate, recording working voltage and current, testing the heating effect by using a thermal infrared imager, judging whether the heating effect (including but not limited to speed, uniformity and the like) meets the design requirement, and avoiding unnecessary cost waste caused by the fact that unqualified products are continuously transferred to the next procedure.
In the preparation method 1 of the electrically heated glass of the silver nanowire conductive film of the embodiment, the silver nanowires are silk-screened on the surface of the polycarbonate plate, the plate is placed in a corresponding mold, and is subjected to hot bending molding to obtain a required single-curved/double-curved shape, then electrodes are connected, and finally, an organosilicone coating is used for surface hardening to obtain the electrically heated glass of the silver nanowire conductive film.
Because the density of the polycarbonate sheet material used in the embodiment is about half of that of the traditional glass, compared with the electric heating glass in the prior art, the weight can be effectively reduced by more than 50%, and the electric heating glass has the characteristics of high visual field definition, high design freedom, high heating speed, good heating uniformity and the like, and also has good sound insulation performance and safety performance.
In the second embodiment of the present invention, fig. 2 is a schematic view of an electrically heated glass 2 of a silver nanowire conductive film according to the second embodiment of the present invention. The electrically heated glass 2 of a silver nanowire conductive film shown in this example was prepared according to the method 1 for preparing an electrically heated glass of a silver nanowire conductive film shown in the above one example, and the electrically heated glass 2 of a silver nanowire conductive film included a polycarbonate plate 201, a silver nanowire 202, an electrode 203, and an organosiloxane-based coating 204, in which:
the polycarbonate sheet 201 has a nano-silver wire region, the nano-silver wire 202 is disposed on the polycarbonate sheet 201 and located in the nano-silver wire region, the electrode 203 is disposed on the polycarbonate sheet 201 and located in the nano-silver wire region and connected to the nano-silver wire 202, and the electrode 203 is preferably a copper electrode, but not limited thereto. The organosilicone coating 204 is coated on the polycarbonate sheet 201 and covers the nano silver wires 202 and the electrodes 203, so as to increase the surface hardness of the polycarbonate sheet 201 and protect the polycarbonate sheet 201.
Alternatively, the polycarbonate sheet 201 may have a single curved surface shape or a double curved surface shape, and those skilled in the art may select the shape according to actual needs, which may not be particularly required by the present application.
The following will further illustrate the beneficial effects of the electrically heated glass of the silver nanowire conductive film and the preparation method thereof in combination with specific examples and comparative examples.
Comparative example
The electric heating glass for preparing the nano silver wire conducting film according to the conventional method in the prior art comprises the following steps:
step S1, taking a polycarbonate plate with the size of 350 x 350mm and a screen plate, and cleaning the polycarbonate plate and the screen plate;
step S2, horizontally placing the polycarbonate sheet and fixing the polycarbonate sheet by using an adhesive tape, pressing a screen plate on the polycarbonate sheet, enabling a screen printing area to be in the central position on the surface of the polycarbonate sheet, compacting the frame of the screen plate, and enabling the size of the screen printing area to be 300 x 300 mm;
step S3, pouring a proper amount of nano-silver wires into the non-silk-screen area of the screen plate, and lightly smearing the nano-silver wires by a scraper to uniformly coat the nano-silver wires on the surface of the silk-screen area;
s4, pressing the scraper tightly, forcibly scraping off redundant nano silver wires, and recycling the nano silver wires into a glass jar for later use by using a gray knife;
s5, carefully taking down the screen plate, wiping the screen plate clean, observing the silk-screen condition of the nano silver wires, putting the polycarbonate plate into a hardening chamber, and heating the polycarbonate plate at 55 ℃ to wait for surface drying;
s6, taking out the polycarbonate sheet, putting the polycarbonate sheet into an oven at 80 ℃, and baking for 5 min;
step S7, after the solidification is finished, taking out the polycarbonate plate for observation and analysis;
and step S8, testing the light transmittance, the haze and the surface resistance of the polycarbonate sheet.
Description and summary of experimental phenomena:
1. appearance: the thickness of the nano silver wire coating is large and not uniform enough;
2. the average value of the light transmittance is 75.09%, the average value of the haze is 4.67%, and the haze is larger;
3. the surface resistance was 108 Ω, and no heating was effected.
Examples
The method 1 for preparing the electrically heated glass of the silver nanowire conductive film according to the embodiment comprises the following steps:
1. taking a polycarbonate plate with the size of 350 x 350mm and a screen plate, and cleaning the polycarbonate plate and the screen plate;
2. horizontally placing and fixing a polycarbonate plate on the table surface of a screen printing machine, and correspondingly fixing a screen plate and the polycarbonate plate on the screen printing machine;
3. the operation process of the screen printer device comprises the following steps:
① pouring appropriate amount of nano silver wire solution into the non-silk screen area of the screen plate, and lightly smearing the solution from right to left with a scraper to uniformly coat the nano silver wire solution on the surface of the silk screen area;
② pressing the scraper tightly, and scraping off excessive silver nanowires from left to right;
③ the polycarbonate sheet was conveyed on a conveyor belt at 120 ℃ and dried;
4. after the curing is finished (solvent type, 120 ℃, 15 min/water-based, 150 ℃, 30min), taking out the polycarbonate plate for observation and analysis;
5. testing the light transmittance, the haze and the surface resistance of the polycarbonate sheet;
6. arranging silver paste, electrodes and the like in the nano silver wire area;
7. an organosiloxane coating (the solid content is 18% +/-1%) is sprayed on the surface of the plate, and after surface drying, the plate is sent into an oven for curing, the curing temperature is 130 ℃, and the curing time is 4 hours;
8. the surface adhesion is tested, and the bonding strength is grade 1.
Description and summary of experimental phenomena:
1. solvent type nano silver wire: the silk-screen printing appearance is relatively uniform, the defects of impurities, sagging and the like exist, the surface resistance is tested after the silk-screen printing appearance is cured again at 120 ℃ for 15min after surface drying, the surface resistance is 12 ohms, and the light transmittance and the haze are respectively 80.25% and 1.49%.
2. The heating test results were as follows:
R＝Rs*L/W＝12*300/300＝12
P＝E2/R＝(12V)2/12＝12W
under the voltage of 12V, the heat is relieved for five minutes, the surface temperature can reach 40 ℃, and the heating effect is realized. By combining the experimental phenomenon description and summary in the comparative examples and the embodiments, the electric heating glass of the nano silver wire conductive film prepared by the preparation method of the electric heating glass of the nano silver wire conductive film has the advantages that the light transmittance is about 80%, the haze is about 1.5%, and the optical property basically meets the requirements.
Meanwhile, the preparation process of the invention is combined to know that the invention has free design, and the polycarbonate organic glass with large curvature such as single curve, double curve and the like can be used, and the density of the polycarbonate organic glass used by the invention is about half of that of the traditional glass, so that the weight of the rear window glass of a small automobile can be reduced by about 2kg under the same thickness.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The preparation method of the electric heating glass of the nano silver wire conductive film is characterized by comprising the following steps of:
taking a polycarbonate plate, and horizontally placing and fixing the polycarbonate plate;
step (b), taking a nano silver wire solution, pouring the nano silver wire solution on a screen plate, and coating the surface of the polycarbonate plate with the nano silver wire solution through the screen plate;
step (c), surface drying the nano silver wire solution to form a nano silver wire area on the polycarbonate plate;
step (d), testing the surface resistance of the polycarbonate sheet, and judging whether the surface resistance is between 10 and 15 ohms;
step (e), if the surface resistance of the polycarbonate sheet is between 10 and 15 ohms, performing a hot bending process on the polycarbonate sheet, and performing hot bending molding on the polycarbonate sheet;
step (f), arranging silver paste and electrodes in the nano silver wire area on the polycarbonate sheet after hot bending forming;
step (g), spraying an organic siloxane coating on the surface of the polycarbonate sheet, and drying and curing the surface; and
and (h) checking whether the polycarbonate sheet is qualified.
2. The method for preparing electrically heated glass as claimed in claim 1, wherein in the step (a), the polycarbonate sheet is horizontally placed on a table top of a screen printing machine and is fixed on the table top by vacuum adsorption.
3. The method for preparing an electrically heated glass of a silver nanowire conductive film as claimed in claim 2, wherein in the step (b), the method for coating the silver nanowire solution on the surface of the polycarbonate sheet through the mesh plate comprises the steps of:
correspondingly fixing the screen plate and the polycarbonate plate on the screen printing machine;
pouring the nano silver wire solution into a non-silk-screen printing area of the screen plate; and
and (3) coating the nano silver wire solution to be uniformly coated on the surface of the polycarbonate sheet, and removing the redundant nano silver wire solution.
4. The method for preparing an electrically heated glass for a silver nanowire conductive film according to claim 3, wherein in the step (c), the method for surface-drying the silver nanowire solution comprises the steps of:
heating a transmission belt matched with the screen printing machine to 120 ℃; and
and placing the polycarbonate sheet on the conveyor belt for conveying, controlling the conveying time to be 3-5 minutes, heating the nano silver wire solution through the conveyor belt, accelerating the volatilization of the solvent in the nano silver wire solution, and surface drying the nano silver wire solution.
5. The method for manufacturing electrically heated glass having a silver nanowire conductive film according to claim 1, wherein in the step (d), if the surface resistance of the polycarbonate sheet is not between 10 and 15 ohms, the polycarbonate sheet is determined to be not qualified if the polycarbonate sheet does not meet the design requirements, and the operations of the steps (a) to (c) are performed again.
6. The method for preparing electrically heated glass as claimed in claim 1, wherein in the step (e), the polycarbonate sheet is subjected to a thermal bending process, wherein the thermal bending temperature is 125-130 ℃, the temperature rise time is 1 hour, and the temperature preservation time is 2 hours.
7. The method for producing an electrically heated glass for a silver nanowire conductive film according to claim 1, wherein in the step (g), the curing temperature of the organosiloxane-based coating at the time of curing is 130 degrees celsius, and the curing time is 4 hours.
8. The method for preparing the electrically heated glass of the silver nanowire conductive film as claimed in claim 1, wherein in the step (h), the inspection items for inspecting whether the polycarbonate sheet is qualified comprise inspecting whether the adhesive strength of the surface adhesion of the polycarbonate sheet is 1 or 0 grade, whether the light transmittance of the polycarbonate sheet is greater than 80%, whether the haze is less than 2%, and whether the heating effect of the polycarbonate sheet meets the design requirements.
9. The method for producing an electrically heated glass for a silver nanowire conductive film according to claim 1, wherein the solvent in the silver nanowire solution is 1% by weight of cyclohexanol, and the cyclohexanol has an average diameter of 25nm and an average length of 15 μm; and/or the mesh number of the mesh plate is 250-350 meshes; and/or the solids content of the organosiloxane in the organosiloxane-based coating is 17% to 19%.
10. An electrically heated glass for a silver nanowire conductive film produced by the method for producing an electrically heated glass for a silver nanowire conductive film according to any one of claims 1 to 9, characterized in that the electrically heated glass for a silver nanowire conductive film comprises:
a polycarbonate sheet having a region of nano-silver wires;
the nano silver wire is arranged on the polycarbonate plate and is positioned in the nano silver wire area;
the electrode is arranged on the polycarbonate plate, is positioned in the nano silver wire area and is connected with the nano silver wire; and
an organosiloxane-based coating coated on the polycarbonate sheet and covering the silver nanowires and the electrodes.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104053256A (en) * | 2014-05-14 | 2014-09-17 | 中国科学院合肥物质科学研究院 | Heater based on transparent silver nanowire conducting thin film and preparation method thereof |
| KR20180064036A (en) * | 2016-12-05 | 2018-06-14 | 인천대학교 산학협력단 | Transparent Heater and Method for fabricating the same |
| CN109095782A (en) * | 2018-07-27 | 2018-12-28 | 五邑大学 | A kind of preparation method of the silver nanowires transparent conductive film based on 3 D stereo micro-structure |
| CN109390080A (en) * | 2018-11-16 | 2019-02-26 | 顾氏纳米科技（浙江）有限公司 | A kind of silver nanowires and transparent conductive oxide composite transparent conductive film and its application |
| CN109983839A (en) * | 2016-10-17 | 2019-07-05 | 皮尔金顿集团有限公司 | Window glass for vehicle |
-
2020
- 2020-02-18 CN CN202010099853.0A patent/CN111315053A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104053256A (en) * | 2014-05-14 | 2014-09-17 | 中国科学院合肥物质科学研究院 | Heater based on transparent silver nanowire conducting thin film and preparation method thereof |
| CN109983839A (en) * | 2016-10-17 | 2019-07-05 | 皮尔金顿集团有限公司 | Window glass for vehicle |
| KR20180064036A (en) * | 2016-12-05 | 2018-06-14 | 인천대학교 산학협력단 | Transparent Heater and Method for fabricating the same |
| CN109095782A (en) * | 2018-07-27 | 2018-12-28 | 五邑大学 | A kind of preparation method of the silver nanowires transparent conductive film based on 3 D stereo micro-structure |
| CN109390080A (en) * | 2018-11-16 | 2019-02-26 | 顾氏纳米科技（浙江）有限公司 | A kind of silver nanowires and transparent conductive oxide composite transparent conductive film and its application |
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