CN106140510B - A kind of electrostatic spraying apparatus and the device for preparing transparent conductive film - Google Patents
A kind of electrostatic spraying apparatus and the device for preparing transparent conductive film Download PDFInfo
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- CN106140510B CN106140510B CN201610817904.2A CN201610817904A CN106140510B CN 106140510 B CN106140510 B CN 106140510B CN 201610817904 A CN201610817904 A CN 201610817904A CN 106140510 B CN106140510 B CN 106140510B
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- conductive film
- spraying apparatus
- transparent conductive
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- 238000007590 electrostatic spraying Methods 0.000 title claims abstract description 44
- 239000002002 slurry Substances 0.000 claims abstract description 35
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 230000033001 locomotion Effects 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 25
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 230000002572 peristaltic effect Effects 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000013528 metallic particle Substances 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 description 15
- 238000000576 coating method Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 15
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
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- 238000001514 detection method Methods 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- -1 Gallium Zinc Oxides Chemical class 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
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- 230000005693 optoelectronics Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- JYMITAMFTJDTAE-UHFFFAOYSA-N aluminum zinc oxygen(2-) Chemical class [O-2].[Al+3].[Zn+2] JYMITAMFTJDTAE-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
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- 238000009503 electrostatic coating Methods 0.000 description 1
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- 238000005188 flotation Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical class [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000007603 infrared drying Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/053—Arrangements for supplying power, e.g. charging power
- B05B5/0533—Electrodes specially adapted therefor; Arrangements of electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0278—Arrangement or mounting of spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0405—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads
- B05B13/041—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads with spray heads reciprocating along a straight line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/20—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising
- B05B15/25—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising using moving elements, e.g. rotating blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/08—Plant for applying liquids or other fluent materials to objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/16—Arrangements for supplying liquids or other fluent material
- B05B5/1608—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of electrostatic spraying apparatus and the devices of preparation transparent conductive film.Electrostatic spraying apparatus includes retractable volume system, positive high voltage generator, negative high-voltage generator, negative plate, liquid-supplying system, driving device, nozzle；The retractable volume system is used to carry out substrate retractable volume operation, and the roller and guide rail in the retractable volume system are conductive material；The positive high voltage generator connects the nozzle, and the negative high-voltage generator connects the negative plate, and the nozzle and the negative plate are located at the two sides of substrate, 0~250mm of the nozzle distance substrate, and the negative plate is contacted with substrate；The liquid-supplying system is for providing electrocondution slurry to the nozzle；The driving device connects the nozzle, for driving the movement of the nozzle.Electrostatic spraying apparatus equipment cost of the invention is low, and product yield obtained is high, and electric conductivity is also preferable.
Description
[technical field]
The present invention relates to the preparations of transparent conductive film, more particularly to a kind of electrostatic spraying apparatus.
[background technique]
As people show that the demand of equipment is swift and violent for thinner and lighter, more inexpensive photoelectric device and associated electrical
Increase, especially photovoltaic industry and touch control display application, such as mobile phone, laptop, All-In-One computer etc., thoroughly
Bright conducting membrane material market explosion.Transparent conductive film common at present includes that ITO (mix by Indium Tin Oxides tin
Miscellaneous three indium oxide), GZO (Gallium Zinc Oxides Ga-doped zinc oxide), AZO (mix by Aluminum Zinc Oxides aluminium
Miscellaneous zinc oxide) etc., these oxides only absorb ultraviolet light, do not absorb visible light.For a long time, ITO is opto-electronics using most
For extensive transparent conductive membrane material.However that there are reserves is limited, processing cost is high, more crisp frangible, toxic etc. many fatal by ITO
The shortcomings that, it is gradually limited in the application and development of the following opto-electronics.
For high-side capacitance formula touch screen, the scientific research personnel of the U.S., Japan, South Korea and China etc. is just paid special attention to using new
The material and technology of grain husk replace ito transparent electrode material, so that reaching reduces cost, proposes high performance purpose.It is existing at present
The new scheme about conductive film.
It is generally first to configure electrocondution slurry by the way of when preparing transparent conductive film, then using the side of accurate coating
Electrocondution slurry is coated on a transparent substrate by formula, then dries and transparent conductive film is made.Make generally to pass through precision in this way
Coating apparatus manufactures to obtain.However accurate coating apparatus has the following problems: (1) equipment is expensive, at high cost.(2) product yield
It is low.The accurate coating of contact is easy to be influenced by particulates, and very long scratch is formed on the product of coating,
Strong influence product yield.(3) electric conductivity for the transparent conductive film being prepared needs to be further increased.(4) it is merely able to apply
Cloth can not adapt to complex surface in even curface.
[summary of the invention]
The technical problems to be solved by the present invention are: making up above-mentioned the deficiencies in the prior art, a kind of electrostatic coating is proposed
The device of transparent conductive film is set and prepares, equipment cost is low, and product yield obtained is high, and electric conductivity is also preferable.
Technical problem of the invention is resolved by technical solution below:
A kind of electrostatic spraying apparatus being used to prepare transparent conductive film, including retractable volume system, positive high voltage generator bear height
Press generator, negative plate, liquid-supplying system, driving device, nozzle；The retractable volume system is used to carry out retractable volume behaviour to substrate
Make, the roller and guide rail in the retractable volume system are conductive material；The positive high voltage generator connects the nozzle, described negative
High pressure generator connects the negative plate, and the nozzle and the negative plate are located at the two sides of substrate, the nozzle distance
0~250mm of substrate, the negative plate are contacted with substrate；The liquid-supplying system is for providing electrocondution slurry to the nozzle；It is described
Driving device connects the nozzle, for driving the movement of the nozzle.
A kind of device preparing transparent conductive film, including electrostatic spraying apparatus as described above.
The beneficial effect of the present invention compared with the prior art is:
Electrostatic spraying apparatus of the invention, by retractable volume system, positive high voltage generator, negative high-voltage generator, negative plate,
Liquid-supplying system, nozzle etc. are equipped with, it can be achieved that in electrocondution slurry electrostatic spraying to substrate.Firstly, electrostatic of the invention
Coating device only needs to control when processing transparent conductive film to be sprayed the amount of nano-silver thread on base material and can control conductive layer
Thickness, it is not necessary that the coating of specific thicknesses, enough accuracy is realized by accurate machining accuracy as accurate coating apparatus, because
Without regard to especially accurate processing component, therefore equipment cost is greatly reduced.Secondly, the device of the invention passes through electrostatic spraying
The spray coating for realizing electrocondution slurry, will not cause the scratch grown very much because of the molecule in air, reduce and produced
To the requirement of environment in journey, be conducive to the yield for improving product.Furthermore electrostatic spraying mode can be such that nano-silver thread fills as much as possible
Point random distribution on a transparent substrate, to efficiently be overlapped to form conductive network, transparent conductive film electric conductivity obtained more preferably,
The translucency of product is also preferable simultaneously.Finally, the device of the invention is coated by electrostatic spraying mode, also can adapt to various multiple
Miscellaneous surface.Electrostatic spraying apparatus of the invention, the Multi needle and retractable volume technology of comprehensive nozzle can be realized long wide cut, volume pair
The large-scale production of volume ground.
[Detailed description of the invention]
Fig. 1 is a kind of structural schematic diagram of the electrostatic spraying apparatus of the specific embodiment of the invention；
Fig. 2 is another structural schematic diagram of the electrostatic spraying apparatus of the specific embodiment of the invention；
Fig. 3 is the structural schematic diagram of the liquid-supplying system in the electrostatic spraying apparatus of the specific embodiment of the invention；
Fig. 4 is the structural schematic diagram of the needle-carrier in the electrostatic spraying apparatus of the specific embodiment of the invention；
Fig. 5 is the preferred structure schematic diagram of the needle-carrier in the electrostatic spraying apparatus of the specific embodiment of the invention；
Fig. 6 is the nano-silver thread electrically conducting transparent membrane sample of the electrostatic spraying apparatus preparation of the specific embodiment of the invention
SEM photograph.
[specific embodiment]
With reference to embodiment and compares attached drawing the present invention is described in further details.
As illustrated in fig. 1 and 2, respectively two kinds of structural schematic diagrams of the electrostatic spraying apparatus of present embodiment.Electrostatic
Spray equipment includes retractable volume system, positive high voltage generator 200, negative high-voltage generator (not shown), negative plate 400, confession
Liquid system 500, driving device 600, nozzle 700.
Retractable volume system is used to carry out substrate retractable volume operation, and the roller and guide rail in the retractable volume system are conduction
Material.In present embodiment, let off roll 8, tenslator 9, guide reel 10, antistatic are provided in retractable volume system
Roller 11, deviation correcting device 12, active force, wind-up roll 13.In retractable volume system antistatic roller 11 and it is all be coated with conductive paste
The guide rail material of material contact selects conductive material, and guarantees good contact, stainless steel riders, conductive silicon rubber roller such as chromium plating
Deng by extra electrostatic walking guide.Meanwhile electrostatic spraying apparatus integral ground, lubricating oil used in roller are also conductive.It receives
0.1m/min~100m/min may be implemented in the vehicle speed range unreeled, and actual speed can be according to required transparent conductive film product
Adjusting performance.The wide cut of retractable volume system can determine according to actual needs, to meet different need between 100mm~1000mm
It asks.
Positive high voltage generator 200 connects nozzle 700, and negative high-voltage generator connects negative plate 400, nozzle 700 and negative plate
400 are located at the two sides of substrate 100, and distance of the nozzle 700 apart from substrate 100 is 0~250mm, negative plate 400 and substrate
100 are in contact.Positive high voltage generator 200 is voltage generator of the available positive high voltage range in 0~+100kV, negative high voltage hair
Raw device is voltage generator of the available range of negative pressure in 0~-100kV.Voltage can be that direct current is also pulse, pulse voltage
Adjustable frequency range is 0.1Hz~10MHz.Negative plate 400 can be one block of smooth square metal plate, and material is preferably stainless
Steel, size are wider than used substrate 100, and both sides respectively reserve the wide cut of 20~50mm.
Liquid-supplying system 500 is for providing electrocondution slurry to nozzle 700.The specific knot of the liquid-supplying system of present embodiment
Structure schematic diagram is as shown in figure 3, liquid-supplying system 500 includes three parts: device for storing liquid, liquid feed device, liquid distributing device.It is decomposable in detail
For agitating device, fluid reservoir 503, peristaltic pump 504, feed flow buffer unit 505, part flow arrangement 506.Agitating device is for stirring institute
State the electrocondution slurry in fluid reservoir 503.Hose one end of peristaltic pump 504 connects fluid reservoir 503, and the other end connects feed flow buffering dress
505 are set, the outlet of feed flow buffer unit 505 connects part flow arrangement 506, and part flow arrangement 506 is more for single liquid pipe to be split into
Root branch pipe is respectively supplied to multiple syringe needles of nozzle, realizes the effect of shunting.
In present embodiment, agitating device includes magnetic stirrer 501, magnetic stir bar 502.Magnetic stir bar
502 are arranged in fluid reservoir 503, and fluid reservoir 503 is placed in magnetic stirrer 501.Magnetic stirrer 501 can effectively prevent leading
The sedimentation of plasma-based material dispersion liquid.When selecting biggish fluid reservoir, to reach optimal mixing effect, other machinery can be selected to stir
Mix device.
503 size of fluid reservoir can be 10~500L, and material can select the materials such as glass, polytetrafluoroethylene (PTFE).Peristaltic pump 504
It supplies liquid at nozzle, has the function of controlling flow, control flow rate of liquid range is 5ml/min-5000ml/min.For
The setting of liquid buffer unit 505 can effectively buffer the pulse of peristaltic pump generation.Since liquid-supplying system 500 is by the way of peristaltic pump
Feed flow, peristaltic pump feed flow have fluctuation, the pressure transient of liquid, so that directly influencing syringe needle goes out the liquid rate of outflow
Stabilization.After the buffer unit 505 is set, the impulse action of peristaltic pump can be offset, feed flow is maintained at and is pressed onto nozzle in the process
Liquid at multiple syringe needles is able to maintain stable pressure and stable flow velocity, to effectively improve device electrostatic spraying
Uniformity.Single fluid-through tube is divided into more fluid-through tubes by part flow arrangement 506.The material selection of each hose and part flow arrangement 506
Polytetrafluoroethylene (PTFE) can prevent corrosion of the electrocondution slurry dispersion liquid to pipeline.
Driving device 600 connects nozzle 700, for driving the movement of nozzle 700.In present embodiment, driving dress
600 height that nozzle is adjusted by platform 4 are set, to adjust the distance between multiple syringe needles and the substrate 100 in nozzle.Driving
Device 600 can drive the fast moving in the longitudinal direction of multiple syringe needles on nozzle, and movement speed can reach 0.001~50m/
min.Mobile range is in 10-1000mm, to realize that the wide cut of spraying reaches 1000mm.Driver in driving device 600
Quantity can be one or select multiple drivers parallel simultaneously.
The structure of nozzle 700 includes multiple syringe needles, needle-carrier.Needle-carrier can be fixed on above-mentioned platform 4.Syringe needle can root
Different apertures is selected according to the viscosity of electrocondution slurry dispersion liquid, preferably pore diameter range is 0.1~3mm.
The needle-carrier illustrated in Fig. 4 includes multiple sheet metals 701, and multiple syringe needle portions are distributed on each sheet metal 701
702, it is used for grafting syringe needle.As a result, by the quantity of setting sheet metal 701 and the quantity of syringe needle portions 702, syringe needle can be formed
The array of composition.It can be set according to actual needs the plug-in position of syringe needle, to realize a variety of syringe needle arrangement modes.Needle-carrier
Material can select the engineering plastics such as aluminium alloy, polytetrafluoroethylene (PTFE), PMMA, ABS.It is noted that using plastic material
Needle-carrier when, can be in the fixed sheet metal in side of contact syringe needle, for positive voltage to be uniformly added to each syringe needle.
Preferably, using needle-carrier as shown in Figure 5.Needle-carrier includes multiple sheet metals 701 and reservoir 703.Each gold
Belong to and multiple syringe needle portions 702 are distributed on piece 701, is used for grafting syringe needle.The side of sheet metal 701 is provided with inclined-plane 704, liquid storage
The lowest point on each inclined-plane 704 is arranged in slot 703, for receiving the electrocondution slurry flowed down from each inclined-plane 704.Pass through setting
Inclined-plane can prevent electrocondution slurry liquid from resting on syringe needle in this way to extra liquid is directed in the reservoir 703 on side
It burns in frame.The lower section of substrate 100 is set especially for nozzle, and the top of substrate 100 is arranged in negative plate 400
Situation.Nozzle has extra liquid and overflows when spraying, after the needle-carrier with inclined-plane, liquid can be along syringe needle and inclined-plane stream
It is dynamic, it is directed fluid in reservoir by inclined-plane, to prevent liquid from remaining near syringe needle.For device shown in Fig. 2
In the setting that sprays downwards of syringe needle, liquid spilling can drip directly down, to will not remain near syringe needle, thus in needle
It is settable in head frame, this bevel structure can also be not provided with, it is only necessary to which needle-carrier can fixed needle.
In present embodiment, multiple syringe needles are fixed on the nozzle that electrostatic spraying device is constituted in needle-carrier.Nozzle
Needle-carrier is fixed on one and can move up and down on the platform 4 for adjusting height, meanwhile, 4 lower end of platform is same quickly to be moved front and back
Dynamic driving device 600 connects.Driving device 600 makes the array of syringe needle composition according to the motion of setting.Feed flow system
System 500 provides the electrocondution slurry of injection for multiple syringe needles of nozzle.Positive high voltage is provided to multiple syringe needles on nozzle, and negative high voltage is same
Negative plate 400 connects.Electrocondution slurry solution is flowed out from nozzle, is scatter under the action of high voltage and is moved to cathode, most
Eventually under the action of electrostatic in injection to transparent substrate.
Preferably, electrocondution slurry selects the electrocondution slurry of metallic particles.Electrostatic spraying apparatus further includes electrode slice 14 and height
Generator (not shown) is pressed, electrode slice 14 is oppositely arranged with the substrate 1000 after spraying electrocondution slurry, is spaced 1~5mm, high
Generator connection electrode piece 14 is pressed, for providing 7~20kV voltage for electrode slice 14.The high pressure that high pressure generator provides is in substrate
Corona is generated with continuous discharge in the gap of electrode slice 14, so that the charged ion being ionized in air, ozone molecule etc. be made to exist
Substrate is rushed under the acceleration of high pressure, to make that low-temperature sintering work occurs between the metallic particles in the electrocondution slurry sprayed on substrate
With so that metallic particles forms continuous film layer structure, to keep the electric conductivity of conductive film obtained higher.Further preferably
Ground, electrocondution slurry select nanometer silver paste.Profession, under corona effect, the polyvinylpyrrolidone on nano-silver thread surface is removed, together
When nano-silver thread between occur low-temperature sintering effect, the electric conductivity of conductive film can be improved in this way.
Electrocondution slurry is that base is uniformly fallen in by way of electrostatic spraying in the electrostatic spraying apparatus of present embodiment
On material, it is only necessary to which the amount that electrocondution slurry on base material is sprayed in control can control thickness, and the amount for adjusting electrocondution slurry can
Easily to pass through the flow velocity of liquid when the concentration, the spraying that adjust electrocondution slurry dispersion liquid, the walking speed of retractable volume system
Adjust, thus the electrostatic spraying apparatus processing transparent conductive film of present embodiment come not against accurate machining accuracy it is real
The coating of existing specific thicknesses, enough accuracy, because of the processing component without regard to especially precision, therefore equipment cost is greatly reduced.
The device of present embodiment is selected to be processed, general cost is below 500,000.And existing accurate coating is by accurate
Coating head can be coated with out the coating of enough accuracy, therefore equipment is expensive, substantially 150~3,000,000.In addition, accurate apply
When cloth electrocondution slurry, such as nano-silver thread, the draw ratio with superelevation cause readily along the direction orientations of coating
It is overlapped to form the inefficient of conductive network, electric conductivity is poor.And the device of present embodiment by electrostatic spraying mode then
It can make nano-silver thread random distribution abundant as much as possible on a transparent substrate, so that it is efficiently overlapped to form conductive network, it is obtained
Transparent conductive film electric conductivity is more preferably.In addition, the device of present embodiment is also beneficial to improve the yield of product, it is obtained
The translucency of product is also preferable, also can adapt to various complex surfaces, it can be achieved that long wide cut, roll-to-roll being mass produced.
As shown in fig. 6, for nano-silver thread transparent conductive film made from the electrostatic spraying device using present embodiment
Sample.It is seen that nano-silver thread is a kind of random distribution state spatially on a transparent substrate.Nano-silver thread is random
The overlap joint state of distribution, so that the electric conductivity of conductive film obtained is relatively good.After tested, measuring its sheet resistance using four probe machines is
50 Ω/sq, measuring light transmittance with light transmission mist degree instrument is 85%.
Above-mentioned electrostatic spraying apparatus may be provided in the system of preparation transparent conductive film, conductive for spraying in substrate surface
Slurry.In preparation facilities, apparatus for baking 15 can be set in the rear end of electrostatic spraying apparatus, it is conductive to be sprayed to electrostatic spraying apparatus
Substrate after slurry carries out baking processing at 30~200 DEG C, so that forming a film after electrocondution slurry drying.The baking that apparatus for baking is constituted
Roasting line length is 0.5~50m.Drying mode can for heated-air drying, infra-red drying etc., dry road form can for it is flat,
Air-flotation type, bridge-type etc., blower select explosion-proof fan, and hazardous gas detecting devices can be installed every 1~3m by toasting in line.
Further, equipment for coating film 16 can be set after apparatus for baking 15.Equipment for coating film 16 can select it is cold cover, heat is covered
Mode.The film covered preferably has electrically conductive or antistatic performance.Hereafter, electrostatic spraying apparatus can be arranged in a device
Roller segment is wound, to wind the transparent conductive film prepared.
In addition, can the top of electrostatic spraying apparatus be arranged temperature and humidity detector 17, detector for hazardous gas 18, temperature,
Humidity regulation and air interchanger 19.Nearby the detection of mountable automatic flame and alarm device 20, carbon dioxide jet go out for syringe needle operation
Firearm 21.
The detectable range of temperature and humidity detector 17 are as follows: 5~100 DEG C of temperature, humidity 1~100%.
Detector for hazardous gas 18 can detection device internal solvent in time vapour pressure, so that signal is passed to control system
System is made rapidly corresponding.Primary solvent typically, for nano-silver thread dispersion liquid is ethyl alcohol, and the explosion limit of ethyl alcohol is
3.3%~19%, thus preferred detection range is 3.3%, inside equipment concentration of alcohol close to 3.3% when will trigger it is logical
Wind apparatus, in time reduce concentration of alcohol.
Temperature, humidity regulation and air interchanger 19 are by compressor of air conditioner, humidifier, blower synergic adjustment temperature, humidity, molten
Agent vapour pressure can adjust temperature humidity range and be respectively as follows: 20~80 DEG C of temperature, humidity 10~90%.Blower selects explosion-proof fan.
Automatic flame detection system 20 can select open flame detector or warming fire detector, when detecting open fire or temperature
Degree can be perceived when sharply increasing by detector, to shut down rapidly, sound and alarm while opening carbon dioxide jet device 21.
Carbon dioxide jet device 21 is by a replaceable carbon dioxide extinguisher bottle and one with gas cylinder connection
Controllable switch nozzle system.When automatic flame detection system 20 has detected that open fire occurs, carbon dioxide can be triggered rapidly
Electromagnetic valve switch on injection apparatus 21 eliminates flame to eject carbon dioxide.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Several alternative or obvious variations are made under the premise of not departing from present inventive concept, and performance or use is identical, all should be considered as
It belongs to the scope of protection of the present invention.
Claims (9)
1. a kind of electrostatic spraying apparatus for being used to prepare transparent conductive film, it is characterised in that: including retractable volume system, positive high voltage hair
Raw device, negative high-voltage generator, negative plate, liquid-supplying system, driving device, nozzle；The retractable volume system is used to carry out substrate
Retractable volume operates, and the roller and guide rail in the retractable volume system are conductive material；The positive high voltage generator connects the spray
Mouth, the negative high-voltage generator connect the negative plate, and the nozzle and the negative plate are located at the two sides of substrate, described
0~250mm of nozzle distance substrate, the negative plate are contacted with substrate；The liquid-supplying system is for providing electrocondution slurry to described
Nozzle；The driving device connects the nozzle, for driving the movement of the nozzle；The electrocondution slurry is metallic particles
Electrocondution slurry；The electrostatic spraying apparatus further includes electrode slice and high pressure generator, after the electrode slice and spraying electrocondution slurry
Substrate be oppositely arranged, be spaced 1~5mm, the high pressure generator connects the electrode slice, for providing 7 for the electrode slice
The voltage of~20kV.
2. the electrostatic spraying apparatus according to claim 1 for being used to prepare transparent conductive film, it is characterised in that: the nozzle
Including multiple syringe needles, needle-carrier, the needle-carrier includes multiple sheet metals, and multiple syringe needle portions are distributed on each sheet metal, is used
In grafting syringe needle.
3. the electrostatic spraying apparatus according to claim 1 for being used to prepare transparent conductive film, it is characterised in that: the nozzle
Including multiple syringe needles, needle-carrier；The needle-carrier includes multiple sheet metals and reservoir, and multiple syringe needles are distributed on each sheet metal
Portions are used for grafting syringe needle；The side of the sheet metal is provided with inclined-plane, and the minimum of each inclined-plane is arranged in the reservoir
Place, for receiving the electrocondution slurry flowed down from each inclined-plane.
4. the electrostatic spraying apparatus according to claim 1 for being used to prepare transparent conductive film, it is characterised in that: the conduction
Slurry is nanometer silver paste.
5. the electrostatic spraying apparatus according to claim 1 for being used to prepare transparent conductive film, it is characterised in that: the feed flow
System includes agitating device, fluid reservoir, peristaltic pump, feed flow buffer unit and part flow arrangement；The agitating device is for stirring institute
State the electrocondution slurry in fluid reservoir；Hose one end of the peristaltic pump connects the fluid reservoir, and it is slow that the other end connects the feed flow
Flushing device, the outlet of the feed flow buffer unit connect the part flow arrangement, and the part flow arrangement is for shunting single liquid pipe
Cheng Duogen branch pipe is respectively supplied to the nozzle.
6. the electrostatic spraying apparatus according to claim 5 for being used to prepare transparent conductive film, it is characterised in that: the stirring
Device includes magnetic stir bar and magnetic stirrer；The magnetic stir bar is arranged in the fluid reservoir, and the fluid reservoir is set
In the magnetic stirrer.
7. the electrostatic spraying apparatus according to claim 2 or 3 for being used to prepare transparent conductive film, it is characterised in that: described
The diameter of syringe needle is 0.1~3mm.
8. a kind of device for preparing transparent conductive film, it is characterised in that: including electrostatic as described in any one of claims 1 to 7
Spray equipment.
9. the device of preparation transparent conductive film according to claim 8, it is characterised in that: it further include apparatus for baking, it is described
Apparatus for baking is used to carry out baking processing at 30~200 DEG C to the substrate after electrostatic spraying apparatus spraying electrocondution slurry.
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| CN201610817904.2A CN106140510B (en) | 2016-09-12 | 2016-09-12 | A kind of electrostatic spraying apparatus and the device for preparing transparent conductive film |
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