CN110208998B - Drying device and method for preparing intelligent color-changing film of nano silver PET conductive film by using drying device - Google Patents
Drying device and method for preparing intelligent color-changing film of nano silver PET conductive film by using drying device Download PDFInfo
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- CN110208998B CN110208998B CN201910478091.2A CN201910478091A CN110208998B CN 110208998 B CN110208998 B CN 110208998B CN 201910478091 A CN201910478091 A CN 201910478091A CN 110208998 B CN110208998 B CN 110208998B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0272—After-treatment with ovens
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/155—Electrodes
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/157—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
Abstract
The invention relates to a drying device, an intelligent color-changing film of a nano silver PET conductive film and a preparation method thereof, wherein the intelligent color-changing film comprises the following components: an upper membrane sheet comprising an upper polyethylene terephthalate film; the upper nano silver conductive film is arranged on the upper polyethylene terephthalate film; the light modulation crystal layer is arranged on the upper nano silver conductive film; lower diaphragm, with last diaphragm complex formation integral type structure, lower diaphragm includes: a lower polyethylene terephthalate film; a lower nano silver conductive film disposed on the lower polyethylene terephthalate film; one side of the optical glue layer is arranged on the lower nano silver conductive film, and the other side of the optical glue layer is connected with the dimming crystal layer; the upper leading electrode is arranged at one side edge of the upper nano silver conductive film and is positioned at the same side with the dimming crystal layer. The invention can reduce the use voltage of the intelligent color-changing film, save 20-45% of electric energy and greatly improve the change range of the transmittance of the intelligent color-changing film.
Description
Technical Field
The invention relates to an intelligent color-changing film, in particular to an intelligent color-changing film of a drying device and a nano silver PET conductive film and a preparation method thereof.
Background
The intelligent color-changing film in the prior art generally comprises an electrochromic film, a photochromic film and a thermochromic film, wherein the electrochromic film is widely applied and mainly applied to the aspects of building glass, electronic curtains, automobile film sticking, projection (motor car glass, aircraft glass, ship glass) and the like.
The working principle of the electrochromic film in the prior art is that Polymer Dispersed Liquid Crystal (PDLC) or nitrogen-phosphorus detector crystal (NPD) is coated between two layers of indium tin oxide semiconductors and polyethylene terephthalate composite conductive films (ITO-PE), and the inside of the polymer dispersed liquid crystal layer is in an ordered arrangement state from an irregular state under the action of an external electric field, so that the conversion from an opaque (frosted state) to a transparent state (the conversion from low transmittance to high transmittance) is realized, and the intelligent dimming film with electric control characteristics is obtained.
In carrying out the invention, the inventors have found that the prior art has at least the following problems:
1. the surface resistance of the indium tin oxide semiconductor (ITO) film is high, so that the intelligent color-changing film has high use voltage, more electric energy can be wasted, and the environment protection is not facilitated;
2. the indium tin oxide semiconductor (ITO) film has low transmittance, so that the intelligent color-changing film prepared by using the film has small light transmittance change range, and the intelligent color-changing film prepared by using the indium tin oxide semiconductor (ITO) and polyethylene terephthalate (PET) has poor ductility.
Disclosure of Invention
In order to solve the technical problems in the prior art, the embodiment of the invention provides a drying device, an intelligent color-changing film of a nano silver PET conductive film and a preparation method thereof. The specific technical scheme is as follows:
in a first aspect, there is provided an intelligent color-changing film of a nano-silver PET conductive film, wherein the intelligent color-changing film of the nano-silver PET conductive film includes:
an upper diaphragm, comprising:
coating a polyethylene terephthalate film;
the upper nano silver conductive film is arranged on the upper polyethylene terephthalate film; and
the dimming crystal layer is arranged on the upper nano silver conductive film;
lower diaphragm, with last diaphragm complex formation integral type structure, lower diaphragm includes:
a lower polyethylene terephthalate film;
a lower nano silver conductive film disposed on the lower polyethylene terephthalate film; and
one side of the optical glue layer is arranged on the lower nano silver conductive film, and the other side of the optical glue layer is connected with the dimming crystal layer;
the upper leading electrode is arranged at one side edge of the upper nano silver conductive film and is positioned at the same side with the dimming crystal layer; and
the lower leading electrode is arranged at one side edge of the lower nano silver conductive film and is positioned at the same side with the optical glue layer.
In a first possible implementation manner of the first aspect, the thickness of the upper polyethylene terephthalate film is 25-250 micrometers, and the visible light transmittance of the upper polyethylene terephthalate film is greater than 93%; the thickness of the lower polyethylene terephthalate film is 25-250 micrometers, and the visible light transmittance of the lower polyethylene terephthalate film is more than 93%.
In a second possible implementation manner of the first aspect, the thickness of the upper nano-silver conductive film is 50-150 nm, and the square resistance of the upper nano-silver conductive film is less than or equal to 100deg.C/≡; the thickness of the lower nano silver conductive film is 50-150 nanometers, and the square resistance of the lower nano silver conductive film is less than or equal to 100 Ω/≡.
In a third possible implementation manner of the first aspect, the thickness of the optical glue layer is 50-100 micrometers, and the visible light transmittance of the optical glue layer is greater than 95%.
In a second aspect, a drying device is provided, which is applied to the preparation of an intelligent color-changing film of a nano silver PET conductive film, and is used for intermittent and cyclic baking of a light-emitting crystal or optical glue, wherein the drying device comprises:
the first oven is used for baking the dimming crystal or the optical glue;
the second oven is used for baking the dimming crystal or the optical glue;
one end of the heat preservation cylinder is connected with the first oven, and the other end of the heat preservation cylinder is connected with the second oven; and
the two ends of the conveying mechanism penetrate through the heat preservation cylinder, one end of the conveying mechanism penetrates through the first oven, the other end of the conveying mechanism is arranged in the second oven, and the conveying mechanism is used for conveying light-adjusting crystals or optical glue;
when the drying device dries the dimming crystal or the optical glue, the first oven and the second oven sequentially bake the dimming crystal or the optical glue.
In a first possible implementation manner of the second aspect, the drying device further includes:
the sealing plate is arranged on the first oven corresponding to the conveying mechanism and is used for sealing the first oven; and
the baffle is arranged on the second oven and is positioned at the side far away from the heat preservation cylinder.
In a third aspect, a method for preparing an intelligent color-changing film of a nano silver PET conductive film is provided, wherein the method for preparing the intelligent color-changing film of the nano silver PET conductive film comprises the following steps:
forming an upper nano silver conductive film on the lower surface of the upper polyethylene terephthalate film;
forming a dimming crystal layer on the upper nano silver conductive film to form an upper membrane;
forming a lower nano silver conductive film on the upper surface of the lower polyethylene terephthalate film;
forming an optical glue layer on the lower nano silver conductive film to form a lower membrane;
compounding the upper membrane and the lower membrane to form an integrated structure; and
printing conductive silver paste on one side edge of the upper nano silver conductive film and one side edge of the lower nano silver conductive film to form an upper electricity-leading electrode and a lower electricity-leading electrode.
In a first possible implementation manner of the third aspect, the upper nano-silver conductive film is formed on the lower surface of the upper polyethylene terephthalate film by using a magnetron sputtering process; the lower nano silver conductive film is formed on the upper surface of the lower polyethylene terephthalate film by utilizing a magnetron sputtering process.
In a second possible implementation manner of the third aspect, the method of forming a dimming crystal layer further includes the steps of:
uniformly coating the dimming crystal on an upper nano silver conductive film positioned on an upper polyethylene terephthalate film; and
placing the upper polyethylene terephthalate film in a drying device, adjusting the temperature of the drying device, and drying the dimming crystal to form a dimming crystal layer;
the method of forming an optical cement layer further comprises the steps of:
uniformly coating optical glue on a lower nano silver conductive film positioned on a lower polyethylene terephthalate film; and
and placing the lower polyethylene terephthalate film in a drying device, adjusting the temperature of the drying device, and drying the optical glue to form an optical glue layer.
With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the temperature of the drying device is 115-125 ℃.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, the nano silver conductive film is used for replacing an indium tin oxide semiconductor (ITO) film in the prior art, so that the use voltage of the intelligent color-changing film can be reduced, the electric energy can be saved by 20-45%, the change range of the transmittance of the intelligent color-changing film can be greatly improved, the nano silver conductive film has good ductility, and the use scene of the intelligent color-changing film is greatly increased.
2. When the intermittent circulation drying device is used for drying the dimming crystal or the optical glue, the dimming crystal or the optical glue sequentially enters the first drying oven and the second drying oven for drying, the first drying oven and the second drying oven are recycled, the utilization rate of the drying ovens can be increased, energy sources are conveniently saved, meanwhile, the dimming crystal or the optical glue is conveyed through the heat preservation cylinder, the temperature of the dimming crystal or the optical glue can not be suddenly changed, the dimming crystal or the optical glue can be cooled for a certain time, the dimming crystal or the optical glue is dried again, and the drying quality can be greatly improved, so that the quality of the intelligent color-changing film is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an intelligent color-changing film of a nano-silver PET conductive film according to an embodiment of the present invention.
Fig. 2 and 3 are schematic structural diagrams of a drying device according to two embodiments of the present invention.
Fig. 4 is a schematic front view of a drying apparatus according to two embodiments of the present invention.
FIG. 5 is a schematic cross-sectional view of the structure of FIG. 4 in the direction A-A, in accordance with two embodiments of the present invention.
Fig. 6 is a schematic step flow diagram of a method for preparing an intelligent color-changing film of a nano silver PET conductive film according to a third embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In an embodiment of the present invention, please refer to fig. 1, which illustrates a schematic structural diagram of an intelligent color-changing film 1 of a nano-silver PET conductive film according to an embodiment of the present invention. The intelligent color-changing film 1 of the nano silver PET conductive film comprises an upper film 101, a lower film 102, an upper electricity-leading electrode 103 and a lower electricity-leading electrode 104, wherein:
referring again to fig. 1, the upper film 101 includes an upper polyethylene terephthalate (PET) film 11, an upper nano silver conductive film 12, and a light modulation crystal layer 13, where the upper polyethylene terephthalate (PET) film 11 is a film formed of polyethylene terephthalate (PET), and the thickness of the film (upper polyethylene terephthalate (PET) film 11) is preferably 25-250 micrometers, for example, but not limited to 25 micrometers, 100 micrometers, 150 micrometers, 200 micrometers, or 250 micrometers. The visible light transmittance of the upper polyethylene terephthalate (PET) film 11 is more than 93% to prevent the light transmittance of the intelligent color-changing film from being affected by the excessively low transmittance, but is not limited thereto.
The upper nano silver conductive film 12 is arranged on the upper polyethylene terephthalate (PET) film 11, and the upper nano silver conductive film 12 is used for replacing an indium tin oxide semiconductor (ITO) film in the prior art, so that the use voltage of the intelligent color-changing film is reduced, the electric energy can be saved by 20-45%, the change range of the transmittance of the intelligent color-changing film can be greatly improved, the high ductility is realized, and the use scene of the intelligent color-changing film is greatly increased.
In a preferred embodiment, the thickness of the upper nano-silver conductive film 12 is 50-150 nm, for example, but not limited to, 50 nm, 100 nm or 150 nm. The square resistance of the upper nano silver conductive film 12 is not more than 100 Ω/≡in order to prevent the resistance from being too high and increase the power consumption, but not limited thereto.
The light modulation crystal layer 13 is disposed on the upper nano silver conductive film 12, and the light modulation crystal layer 13 is used for adjusting the color change of the intelligent color-changing film 1, and in this embodiment, there may be no special requirement for the selection of the light modulation crystal layer 13, and reference may be made to the conventional selection by those skilled in the art.
Referring to fig. 1 again, the lower film 102 and the upper film 101 are combined to form an integral structure, and the lower film 102 includes a lower polyethylene terephthalate (PET) film 14, a lower nano silver conductive film 15 and an optical glue layer 16, where the lower polyethylene terephthalate (PET) film 14 is a film formed by polyethylene terephthalate (PET), and the thickness of the film (lower polyethylene terephthalate (PET) film 14) is preferably 25-250 micrometers, for example, but not limited to 25 micrometers, 100 micrometers, 150 micrometers, 200 micrometers or 250 micrometers. The visible light transmittance of the lower polyethylene terephthalate (PET) film 14 is greater than 93% to prevent the light transmittance of the intelligent color-changing film from being affected by the excessively low transmittance, but is not limited thereto.
The lower nano silver conductive film 15 is arranged on the lower polyethylene terephthalate (PET) film 14, and the lower nano silver conductive film 15 is used for replacing an indium tin oxide semiconductor (ITO) film in the prior art, so that the use voltage of the intelligent color-changing film is reduced, the electric energy can be saved by 20-45%, the change range of the transmittance of the intelligent color-changing film can be greatly improved, the better ductility is achieved, and the use scene of the intelligent color-changing film is greatly increased.
In a preferred embodiment, the thickness of the lower nano-silver conductive film 15 is 50-150 nm, for example, but not limited to, 50 nm, 100 nm or 150 nm. The square resistance of the lower nano silver conductive film 15 is not more than 100 Ω/≡in order to prevent the resistance from being too high and increase the power consumption, but not limited thereto.
One side of the optical glue layer 16 is arranged on the lower nano silver conductive film 15, and the other side of the optical glue layer 16 is connected with the dimming crystal layer 13, so that the lower membrane 102 and the upper membrane 101 are compounded to form an integrated structure through the optical glue layer 16. In this embodiment, there is no particular requirement for the selection of the optical adhesive layer 16, and the optical adhesive layer 16 may be selected by referring to conventional selection by those skilled in the art, for example, an adhesive such as silicone, acrylic resin, and unsaturated polyester, polyurethane, epoxy resin.
The upper lead electrode 103 is disposed at one side edge of the upper nano silver conductive film 12 and is located at the same side as the dimming crystal layer 13, and the upper lead electrode 103 is used for being led out to be connected with an alternating voltage through a wiring circuit.
The lower lead electrode 104 is disposed at an edge of one side of the lower nano silver conductive film 15 and is located at the same side as the optical glue layer 16, and the lower lead electrode 104 is used for leading out another wiring circuit and is connected with the ac voltage through the other wiring circuit.
The alternating voltage provides voltage for the upper membrane 101 and the lower membrane 102 respectively through the upper lead electrode 103 and the lower lead electrode 104, and the transmittance of the intelligent color-changing film 1 of the nano silver PET conductive film is adjusted through the input of the alternating voltage.
In the two embodiments of the present invention, please refer to fig. 2 and 3, which respectively show the structure of the drying device 2 according to the two embodiments of the present invention. The drying device 2 is mainly applied to the preparation of the intelligent color-changing film 1 of the nano silver PET conductive film in the above embodiment, and intermittent cyclic baking is performed on the photonic crystal or the optical glue, however, the application of the drying device 2 is not limited thereto, and those skilled in the art can also select to apply it to baking other materials according to the teachings of the present embodiment. The drying device 2 disclosed in this embodiment includes a first oven 201, a second oven 202, a heat-insulating cylinder 203, and a conveying mechanism 204, wherein:
the first oven 201 is used for baking light-adjusting crystals or optical glue, the oven housing of the first oven 201 disclosed in this embodiment is generally made of thin steel plates, the surface of which is baked with paint, and the working chamber is made of high-quality structural steel plates. Aluminum silicate fibers are filled between the shell and the working chamber. The heater is mounted to the bottom, and may be mounted to the top or to both sides. The temperature control instrument adopts a digital display intelligent temperature control energy meter, and PID (proportion integration differentiation) adjustment is carried out by configuring a 99.99 hour time controller and connecting with an alarm device, so that the operation of the oven is simpler, more convenient, faster and more effective, but the invention is not limited to the above.
The second oven 202 is used for baking light-adjusting crystals or optical glue, the oven housing of the second oven 202 disclosed in this embodiment is generally made of thin steel plate, the surface is baked with paint, and the working chamber is made of high-quality structural steel plate. Aluminum silicate fibers are filled between the shell and the working chamber. The heater is mounted to the bottom, and may be mounted to the top or to both sides. The temperature control instrument adopts a digital display intelligent temperature control energy meter, and PID (proportion integration differentiation) adjustment is carried out by configuring a 99.99 hour time controller and connecting with an alarm device, so that the operation of the oven is simpler, more convenient, faster and more effective, but the invention is not limited to the above.
For further description of the drying device 2 shown in fig. 2 and 3, please refer to fig. 4, which illustrates a schematic front view of the drying device 2 according to a second embodiment of the present invention. One end of the heat preservation cylinder 203 is connected with the first oven 201, and the other end of the heat preservation cylinder 203 is connected with the second oven 202, so that the first oven 201 and the second oven 202 are connected through the heat preservation cylinder 203, and then the light modulation crystal or optical glue is transmitted from the first oven 201 to the second oven 202 through the heat preservation cylinder 203, so that the light modulation crystal or optical glue can be prevented from being exposed in the air, the temperature is suddenly changed, and the heat preservation cylinder 203 can be cooled for a certain time, so that the drying quality is greatly improved when the drying is performed again, and the quality of the intelligent color-changing film is greatly improved.
Referring to FIG. 5, a schematic cross-sectional view of the structure of the portion A-A in FIG. 4 is shown. The two ends of the conveying mechanism 204 pass through the thermal insulation cylinder 203, one end of the conveying mechanism passes through the first oven 201, and the other end of the conveying mechanism is arranged in the second oven 202, so that the conveying mechanism 204 can transmit light modulation crystal or optical glue through the thermal insulation cylinder 203 when transmitting light modulation crystal or optical glue, and the conveying mechanism 204 can select a transmission belt, but is not limited thereto.
When the drying device 2 dries the light-adjusting crystal or the optical glue, the light-adjusting crystal or the optical glue is placed on the conveying mechanism 204, the conveying mechanism 204 transmits the light-adjusting crystal or the optical glue to the first oven 201 for the first time baking, after the first time baking is finished, the conveying mechanism 204 transmits the light-adjusting crystal or the optical glue to the second oven 202 through the heat preservation cylinder 203 for the second time baking, the utilization rate of the ovens can be increased through the cyclic use of the first oven 201 and the second oven 202, the energy is saved conveniently,
in a preferred embodiment, referring to fig. 2 and 3 again, the drying device 2 further includes a sealing plate 205 and a baffle 206, the sealing plate 205 is disposed on the first oven 201 corresponding to the conveying mechanism 204, and the sealing plate 205 is used for sealing the first oven 201 to reduce heat dissipation. Meanwhile, the baffle 206 is disposed on the second oven 202 and is located at a side far away from the thermal insulation cylinder 203, and the side is generally provided with a blanking opening for blanking the baked material, and the baffle is correspondingly disposed at the blanking opening to reduce heat dissipation, but not limited thereto.
In the third embodiment of the present invention, please refer to fig. 6, which shows a schematic flow chart of steps of the preparation method 3 of the intelligent color-changing film 1 of the nano silver PET conductive film in the third embodiment of the present invention. The preparation method 3 of the intelligent color-changing film 1 of the nano silver PET conductive film comprises the following steps 301-306, wherein:
in step 301, the upper nano-silver conductive film 12 is formed. An upper nano silver conductive film 12 is formed on the lower surface of the upper polyethylene terephthalate (PET) film 11.
Specifically, the upper nano silver conductive film 12 is formed on the lower surface of the upper polyethylene terephthalate (PET) film 11 by using a magnetron sputtering process, but not limited thereto. The magnetron sputtering process is a conventional technical means for those skilled in the art, and thus is not described herein.
In step 302, the upper membrane 101 is formed. A light modulation crystal layer 13 is formed on the upper nano silver conductive film 12, thereby forming an upper membrane 101.
Specifically, the light-adjusting crystal is uniformly coated on the upper nano silver conductive film 12 on the upper polyethylene terephthalate (PET) film 11 by using a coater, the upper polyethylene terephthalate (PET) film 11 is placed in the drying device 2, and the temperature of the drying device 2 is adjusted, preferably 115-125 ℃, for example, but not limited to 115 ℃, 120 ℃ or 125 ℃. The light modulation crystal is dried by the drying device 2 to form a light modulation crystal layer 13, thereby forming an upper membrane 101.
More specifically, the upper polyethylene terephthalate (PET) film 11 is placed on the conveying mechanism 204, the conveying mechanism 204 conveys the upper polyethylene terephthalate (PET) film 11 to the first oven 201, the first oven 201 performs a first baking of the light adjusting crystal, after the first baking is completed, the conveying mechanism 204 conveys the upper polyethylene terephthalate (PET) film 11 to the second oven 202 through the heat insulation cylinder 203, the second oven 202 performs a second baking of the light adjusting crystal, and the light adjusting crystal is cured through the first and second baking, so that the light adjusting crystal layer 13 is formed, and the upper film 101 is formed.
More specifically, after the upper membrane 101 is formed, it is rolled up to facilitate the adhesion between the upper membrane and the lower membrane 102, but not limited thereto.
In step 303, the lower nano silver conductive film 15 is formed. A lower nano silver conductive film 15 is formed on the upper surface of the lower polyethylene terephthalate (PET) film 14.
Specifically, the lower nano silver conductive film 15 is formed on the upper surface of the lower polyethylene terephthalate (PET) film 14 by using a magnetron sputtering process, but not limited thereto. The magnetron sputtering process is a conventional technical means for those skilled in the art, and thus is not described herein.
At step 304, lower diaphragm 102 is formed. An optical glue layer 16 is formed on the lower nano-silver conductive film 15, thereby forming a lower membrane 102.
Specifically, the optical glue is uniformly coated on the lower nano silver conductive film 15 on the lower polyethylene terephthalate (PET) film 14 by using a coater, the lower polyethylene terephthalate (PET) film 14 is placed in the drying device 2, and the temperature of the drying device 2 is adjusted, preferably 115-125 ℃, for example, but not limited to 115 ℃, 120 ℃ or 125 ℃. The optical cement is dried by the drying device 2 to form an optical cement layer 16, and then a lower membrane 102 is formed.
More specifically, the lower polyethylene terephthalate (PET) film 14 is placed on the conveying mechanism 204, the conveying mechanism 204 conveys the lower polyethylene terephthalate (PET) film 14 to the first oven 201, the first oven 201 performs a first baking on the optical glue, after the first baking is completed, the conveying mechanism 204 conveys the lower polyethylene terephthalate (PET) film 14 to the second oven 202 through the heat insulation cylinder 203, the second oven 202 performs a second baking on the optical glue, and the optical glue is cured through the first and second baking to form the optical glue layer 16, thereby forming the lower film 102.
And step 305, compounding. The upper membrane 101 and the lower membrane 102 are combined to form an integral structure.
Specifically, the dimming crystal layer 13 on the upper film 101 is attached to the optical glue layer 16, the upper film 101 is rolled, and the upper film 101 and the lower film 102 are combined to form an integrated structure through the optical glue layer 16, but not limited thereto.
In step 306, the upper and lower lead electrodes 103 and 104 are formed. Conductive silver paste is printed on one side edge of the upper nano-silver conductive film 12 and the lower nano-silver conductive film 15 to form an upper lead electrode 103 and a lower lead electrode 104.
Preferably, wiring circuits are respectively led out of the upper lead electrode 103 and the lower lead electrode 104, and are connected with alternating voltage through the wiring circuits, and the transmittance of the intelligent color-changing film 1 of the nano silver PET conductive film is adjusted by adjusting the magnitude of the alternating voltage.
While the foregoing description illustrates and describes several preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (9)
1. The intelligent color-changing film of the nano silver PET conductive film is characterized by comprising an upper film sheet, a lower film sheet, an upper electricity-guiding electrode and a lower electricity-guiding electrode, wherein the upper film sheet comprises an upper polyethylene terephthalate film, an upper nano silver conductive film and a light-adjusting crystal layer, and the upper nano silver conductive film is arranged on the upper polyethylene terephthalate film; the light adjusting crystal layer is arranged on the upper nano silver conductive film, the lower film and the upper film are compounded to form an integrated structure, the lower film comprises a lower polyethylene terephthalate film, a lower nano silver conductive film and an optical glue layer, the lower nano silver conductive film is arranged on the lower polyethylene terephthalate film, one side of the optical glue layer is arranged on the lower nano silver conductive film, the optical glue layer is connected with the light modulation crystal layer on the other side, the upper electricity leading electrode is arranged at one side edge of the upper nano silver conductive film and is positioned at the same side with the light modulation crystal layer, the lower electricity leading electrode is arranged at one side edge of the lower nano silver conductive film and is positioned at the same side with the optical glue layer, and the drying device is characterized in that:
the first oven is used for baking the dimming crystal or the optical glue;
the second oven is used for baking the dimming crystal or the optical glue;
one end of the heat preservation cylinder is connected with the first oven, and the other end of the heat preservation cylinder is connected with the second oven; and
the two ends of the conveying mechanism penetrate through the heat preservation cylinder, one end of the conveying mechanism penetrates through the first oven, the other end of the conveying mechanism is arranged in the second oven, the conveying mechanism is an annular conveying belt, and the conveying mechanism is used for conveying the dimming crystal or the optical glue;
when the drying device dries the light-adjusting crystal, the upper nano silver conductive film is arranged on the upper polyethylene terephthalate film, the light-adjusting crystal layer is arranged on the upper nano silver conductive film, the upper polyethylene terephthalate film and the light-adjusting crystal layer form an upper film, the upper film is arranged on the conveying mechanism, and the first oven and the second oven are used for sequentially baking the light-adjusting crystal of the upper film;
when the drying device dries the optical glue, one side of the optical glue layer is arranged on the lower nano silver conductive film, and the other side of the optical glue layer is connected with the dimming crystal layer, so that the lower membrane and the upper membrane form an integrated structure through the combination of the optical glue layer and are arranged on the conveying mechanism, and the first oven and the second oven are sequentially used for baking the optical glue between the lower membrane and the upper membrane.
2. The drying apparatus according to claim 1, wherein the upper polyethylene terephthalate film has a thickness of 25 to 250 μm, and the visible light transmittance of the upper polyethylene terephthalate film is more than 93%; the thickness of the lower polyethylene terephthalate film is 25-250 micrometers, and the visible light transmittance of the lower polyethylene terephthalate film is more than 93%.
3. The drying apparatus according to claim 1, wherein the thickness of the upper nano-silver conductive film is 50 to 150 nm, and the sheet resistance of the upper nano-silver conductive film is 100 Ω/≡; the thickness of the lower nano silver conductive film is 50-150 nanometers, and the square resistance of the lower nano silver conductive film is less than or equal to 100 Ω/≡.
4. The drying apparatus according to claim 1, wherein the thickness of the optical cement layer is 50-100 μm, and the visible light transmittance of the optical cement layer is more than 95%.
5. The drying apparatus according to claim 1, further comprising:
the sealing plate is arranged on the first oven corresponding to the conveying mechanism and is used for sealing the first oven; and
the baffle is arranged on the second oven and is positioned at the side far away from the heat preservation cylinder.
6. A method for preparing an intelligent color-changing film of a nano silver PET conductive film by using the drying device of claim 1, which is characterized in that the preparation method of the intelligent color-changing film of the nano silver PET conductive film comprises the following steps:
forming an upper nano silver conductive film on the lower surface of the upper polyethylene terephthalate film;
forming a dimming crystal layer on the upper nano silver conductive film to form an upper membrane;
forming a lower nano silver conductive film on the upper surface of the lower polyethylene terephthalate film;
forming an optical glue layer on the lower nano silver conductive film to form a lower membrane;
compounding the upper membrane and the lower membrane to form an integrated structure; and
and printing conductive silver paste on one side edge of the upper nano silver conductive film and one side edge of the lower nano silver conductive film to form an upper electricity-guiding electrode and a lower electricity-guiding electrode.
7. The method for preparing the intelligent color-changing film of the nano-silver PET conductive film according to claim 6, wherein the upper nano-silver conductive film is formed on the lower surface of the upper polyethylene terephthalate film by utilizing a magnetron sputtering process; the lower nano silver conductive film is formed on the upper surface of the lower polyethylene terephthalate film by utilizing a magnetron sputtering process.
8. The method of preparing a smart color shifting film of a nano-silver PET conductive film according to claim 6, wherein the method of forming a dimming crystal layer further comprises the steps of:
uniformly coating a dimming crystal on the upper nano silver conductive film on the upper polyethylene terephthalate film; and
placing the upper polyethylene terephthalate film in a drying device, adjusting the temperature of the drying device, and drying the dimming crystal to form the dimming crystal layer;
the method for forming the optical cement layer further comprises the following steps:
uniformly coating optical glue on the lower nano silver conductive film on the lower polyethylene terephthalate film; and
and placing the lower polyethylene terephthalate film in a drying device, adjusting the temperature of the drying device, and drying the optical glue to form the optical glue layer.
9. The method for preparing the intelligent color-changing film of the nano-silver PET conductive film according to claim 8, wherein the temperature of the drying device is 115-125 ℃.
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