CN107984776A - A kind of functional film and preparation method thereof - Google Patents
A kind of functional film and preparation method thereof Download PDFInfo
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- CN107984776A CN107984776A CN201711243877.3A CN201711243877A CN107984776A CN 107984776 A CN107984776 A CN 107984776A CN 201711243877 A CN201711243877 A CN 201711243877A CN 107984776 A CN107984776 A CN 107984776A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
Abstract
The invention discloses a kind of functional film and preparation method thereof, the preparation method of functional film comprises the following steps：S1, the flexible substrates that surface is provided with to adhesion resin are deployed on volume to volume drive apparatus, and smooth upper roll wheel is set above the flexible substrates, and hot pressing lower roll wheel is set below the flexible substrates；S2, is configured to the dispersion soln that concentration is 0.1~5mg/mL by dispersant by nano level functional material and is used as spray coating liquor；S3,5~100 DEG C are heated to by environment temperature or the upper roll wheel, by the spray coating liquor even application to the upper roller wheel surface；At the same time, rotate the upper roll wheel and hot pressing lower roll wheel, hot pressing is carried out to the flexible substrates by the upper roll wheel and hot pressing lower roll wheel, softens the adhesion resin, and the functional material on the upper roll wheel is transferred on the adhesion resin after being bonded to softening.The functional material of film surface produced by the present invention is evenly distributed, and is easy to implement slimming.
Description
【Technical field】
The present invention relates to nanometer materials application field, more particularly to a kind of corresponding functional film of nanometer materials
Preparation method.
【Background technology】
With the development of science and technology, functional film demand is increasing, the requirement to performance is also higher and higher.Feature is thin
Film, a certain (or some) specific functions for referring generally to that there is general purpose film not possess, can meet to apply upper special requirement
Film, such as piezoelectric membrane, antistatic film, touch screen transparent conductive film, electromagnetic wave shield film, electric heating film,
Electroluminescent film, thin-film solar cells etc..Since functional film has different specific functions, it can preferably meet
The special requirement of different commodity, has preferable using effect.Functional film usually has higher technology content, preferable
Economic benefit and the stronger market competitiveness, therefore enjoy people to pay close attention to.Function film will play the part of in strategic new industry
Important role, has a extensive future, and contains huge investment opportunity.Function film performance, application field are different, technical barrier
Higher, its technological difficulties includes raw material, formula and technique, equipment.
By improving the performance of functional film or reducing the cost of functional film, functional film can be improved
The market competitiveness.But current functional film and it is unsatisfactory for the demand in market.In terms of practical application, for example, large and medium-sized
The application that touch screen and flexible touch-control are shown will be more and more common, and especially the appearance of smart city in recent years is for large-scale touch screen
Demand, the important base material transparent conductive film as touch screen are but faced with the predicament of distress.Traditional transparent conductive film master
There are ITO (In2O3：) and FTO (SnO Sn2：F), the wherein market share of the ito thin film in occupation of more than 90%.However, ITO is saturating
Bright conductive film is that conductive material is sputtered in substrate using magnetron sputtering technique, and required technical conditions are high, and materials'use rate is low
Under；Since the crisp not resist bending of itself matter of ITO materials causes transparent conductive film to be difficult to apply on flexible device.In addition, by
It is higher in the preparation and resistance value for being difficult to realize the high yield of large area, thus yield is low, relaxation in large touch screen is prepared
Property it is big and can not be used in actual production.
In addition, the production method such as electrochomeric films, quantum dot fluorescence film, optical sensor film, passing except using
Outside the means such as evaporation, sputtering, chemical vapor deposition, also progressively obtained in recent years by the way of volume to volume coating.It is but conventional
Volume to volume coating --- such as nick coating is faced with that processing step is complicated, plant maintenance difficulty is high, nano material dispersiveness
A series of problems, such as poor, obtained membrane material skewness under micro-scale, easily produces bubble (bad point) or reunion etc. and asks
Topic.
The disclosure of background above technology contents is only used for inventive concept and the technical solution that auxiliary understands the present invention, it is not
The prior art of present patent application is necessarily belonged to, shows the applying date of the above in present patent application in no tangible proof
In the case of disclosed, above-mentioned background technology should not be taken to the novelty and creativeness of evaluation the application.
【The content of the invention】
The technical problems to be solved by the invention are：Above-mentioned the deficiencies in the prior art are made up, propose a kind of functional film
And preparation method thereof, the functional material of obtained film surface is evenly distributed, and is easy to implement slimming.
The technical problem of the present invention is solved by following technical solution：
A kind of preparation method of functional film, comprises the following steps：Surface, is provided with the flexibility of adhesion resin by S1
Substrate is deployed on volume to volume drive apparatus, and smooth upper roll wheel is set above the flexible substrates, in the flexible substrates
Lower section sets hot pressing lower roll wheel；S2, it is 0.1~5mg/mL's that nano level functional material is configured to concentration by dispersant
Dispersion soln is as spray coating liquor；S3,5~100 DEG C are heated to by environment temperature or the upper roll wheel, and the spray coating liquor is uniform
Spray to the upper roller wheel surface；Meanwhile the upper roll wheel and hot pressing lower roll wheel are rotated, pass through the upper roll wheel and hot pressing lower roll
Wheel carries out hot pressing to the flexible substrates, softens the adhesion resin, and make the functional material on the upper roll wheel
Transfer is bonded on the adhesion resin after softening, and functional film of the surface formed with feature film layer is made.
A kind of functional film according to made from preparation method as described above.
The beneficial effect that the present invention is compared with the prior art is：
The preparation method of the functional film of the present invention, is configured to dispersion soln by nano level functional material, passes through
Spraying method is sprayed into smooth upper roller surface, and spray coating liquor is distributed to upper roller wheel surface under 5~100 DEG C of temperature range,
So as to form the feature film layer for being uniformly distributed and being formed by functional material in the upper roller wheel surface.The film layer is by dispersion liquid
It is quick after being sprayed on smooth disk roller to be formed, therefore the nano-functional material in dispersion liquid forms film before non-aggregated
Layer, so as to homogenize distribution as far as possible.Rotated by upper roll wheel and lower roll wheel and flexible substrates are carried out with hot pressing, the final film layer
It is transferred on the adhesion resin after softening, so as to be transferred in flexible substrates.The functional film prepared by the above process,
The functional material on surface is evenly distributed, and the thickness of film layer can realize slimming, these are conventional spraying, typography preparation
What functional film was unable to reach.
【Brief description of the drawings】
Fig. 1 is the schematic cross-section for the device that functional film is prepared in the specific embodiment of the invention；
Fig. 2 be the specific embodiment of the invention embodiment 1 in obtained transparent electric heating film SEM phenograms.
【Embodiment】
With reference to embodiment and compare attached drawing the present invention is described in further details.
Idea of the invention is that：Functional film was prepared in the past, typically by functional material using evaporation, sputtering, change
The modes such as vapour deposition, coating are learned to be formed in flexible substrates., can for the functional material of micron order size under these modes
Realization is preferably uniformly distributed effect, but for nanometer materials, the phenomenon of reunion is often presented on a flexible substrate, causes
It can not be evenly distributed.In addition, by these conventional modes, the usual thickness of functional membrane layer segment of preparation is thicker, Wu Fashi
The development trend that should be thinned.As the performance requirement to functional film is higher and higher, the preparation of functional film it is main
Difficult point be：How to realize that the thickness of film layer is controllable, and in film layer nano material uniform distribution.Prior magnetron sputtering
It is with high costs Deng vacuum technique, material category limitation research；And the method for using printing coating, it is difficult to overcome reunion, bubble etc.
Problem and be difficult to realize to the film layer of nano thickness low cost produce.In order to tackle these problems, the present invention proposes one
The new preparation process of kind.First, the dispersion solution of nanometer materials is applied at a certain temperature by way of spraying
On the smooth upper roll wheel in surface, thin film layer structure is directly formed on upper roll wheel, then producing disk roller by volume to volume rotates,
The synchronous rotation of upper and lower disk roller, so that the film layer that functional material is formed is transferred to adhesion resin intimate contact therewith
On, and resin is softened so that nano material is firm by the hot pressing function between subbasal hot pressing disk roller and upper roll wheel
Admittedly being bonded on flexible parent metal, it is evenly distributed and the strong functional film of power is combined between each layer.This technology not only may be used
Equipment cost is greatly reduced, and spray coating liquor is stored in the pipeline of closing, and waste of material situation can be greatly lowered, and be led in addition
The modes such as roller speed, delivery rate, ambient temperature and humidity are mixed in toning, it is convenient to adjust the thickness of membrane material that spraying obtains and
Quality, is with a wide range of applications and technical advantage.
As shown in Figure 1, to prepare the schematic cross-section of the device of functional film, preparation method in present embodiment
Comprise the following steps：
S1, the flexible substrates 4 that surface is provided with to adhesion resin 3 are deployed in volume to volume drive apparatus (not shown)
On, smooth upper roll wheel 2 is set above the flexible substrates 4, hot pressing lower roll wheel 5 is set below the flexible substrates 4.
In the step, adhesion resin 3 can be acrylate type resin, epoxide resin type resin, phenolic resin, ureaformaldehyde tree
It is fat, phenolic aldehyde-composite epoxy resin, the compound light-cured resin of epoxy-acrylate, polyurethane-type resin, polyester resin, poly-
One or more mixing in ester-acrylate compound type light-cured resin, polyimides, polyethylene-vinyl acetate etc..It is soft
Property substrate 4 can be polyethylene terephthalate (PET), it is cellophane, polybutylene terephthalate (PBT), poly-
One kind in dimethyl siloxane (PDMS), polypropylene, polyethylene, polyimides (PI).
S2, is configured to the dispersion soln that concentration is 0.1~5mg/mL by dispersant by nano level functional material and makees
For spray coating liquor.
In the step, nano level functional material can be graphene, carbon nanotubes, NANO CRYSTAL COPPER WIRE, nano-silver thread, nanometer
Nickel wire, gold nanowire, conducting polymer, titania nanoparticles, Zinc oxide nanoparticle, quantum dot nano-particle, four oxygen
Change three Fe nanometer particles, spherical nano silver, high molecule liquid crystal nano-particle, Nano particles of silicon dioxide, organic metal framework
One or more kinds of mixing in compound, nano hydrotalcite, perovskite nanocrystal.Correspondingly, follow-up obtained feature
Film can be conductive film, electromagnetic wave shield film, optical thin film, piezoelectric membrane, ferroelectric thin film, electroluminescent heating film, electroluminescent hair
One kind in optical thin film, electrochomeric films, liquid crystal light modulation film, automatically cleaning film.
When disperseing above-mentioned nanometer materials, dispersant can be water, ethanol, methanol, isopropanol, acetone, hexane, octane, fourth
Ketone, tetrahydrofuran, dimethylformamide, ethyl acetate, chloroform, toluene, dimethyl carbonic ether, one kind in ethyl carbonate fat or
A variety of mixing.After scattered, the concentration of functional material is 0.1~5mg/mL in dispersion soln.Concentration within the range, can be just
After spraying the equally distributed functional nanomaterials film layer of material is formed in upper roller wheel surface.
S3,5~100 DEG C are heated to by environment temperature or the upper roll wheel, by the spray coating liquor even application described in
Upper roller wheel surface, while upper roll wheel and hot pressing lower roll wheel are rotated, by the upper roll wheel and hot pressing lower roll wheel to the flexible base
Bottom carries out hot pressing, softens the adhesion resin, and transfers the functional material on the upper roll wheel and be bonded to softening
On adhesion resin afterwards, functional film of the surface formed with feature film layer is made.
In above-mentioned steps, the lower roll wheel 5 of setting is used to heat and pressurize, and upper roll wheel 2 is used to receive the material in spraying, and
Film layer structure is formed on upper roll wheel.For upper roll wheel, its material can be metal, graphite, macromolecule or ceramics.Metal can be
One kind in copper, aluminium alloy, magnesium alloy, iron, nickel, stainless steel, is preferably stainless steel.It should be noted that for metal or stone
The conductive upper roll wheel that black material is formed, then mode applicatory is more when spraying, can by pneumatic spraying, ultrasound spraying or
Person's electrostatic spraying mode.It is more preferred in a manner of electrostatic spraying in these spraying methods.By electrostatic spraying mode, can incite somebody to action
The dispersion soln of nano material is dispersed into comparatively fine drop, is easy to implement homogenization distribution, and by being dispersed into more
Tiny drop, spraying rate and velocity of rotation will not influence uniformization effect after accelerating, so that high efficiency system can be realized
Standby film.For using the macromolecule non-conductive upper roll wheel spraying method that either ceramic material is formed as pneumatic spraying or
Ultrasonic spraying method.
In addition, the length of disk roller and diameter adapt to preparation process up and down, to its length and diameter without special
Limitation.Preferably, the length of upper roll wheel, lower roll wheel is equal with the width of flexible substrates 4, in this way, volume to volume equipment is in length side
It is overall on its width to be covered by upper and lower disk roller when moving up flexible substrates, so that with higher preparation efficiency.
Further, upper roll wheel, the diameter of lower roll wheel are all higher than 100mm, after spraying formed film layer it is more uniform, and preparation efficiency also compared with
It hurry up.
When dispersion liquid is sprayed to upper roller wheel surface, used nozzle number includes single nozzle or more nozzles.Such as it is
More nozzles, the arrangement mode of nozzle include any of linear arrangement, array arrangement；Also nozzle can be reduced by moving back and forth
Number.By controlling the translational speed of nozzle, nozzle ejects the jet velocity of liquid and the velocity of rotation of upper roll wheel, can be real
The adjustment of film layer effect, thickness and the preparation efficiency now prepared, so that the preparation process simplicity of present embodiment can
Control, can be made that thickness is controllable and the equally distributed film layer of functional material.
When spraying dispersion liquid, in the case of environment temperature is heated to 5~100 DEG C for 5~100 DEG C or upper roll wheel into
OK, in this way, spraying to the dispersion liquid of upper roll wheel during upper roller wheel surface is distributed, solvent also with volatilization so that
Surface is distributed to form film layer, and functional material therein will not reunite together, therefore distribution uniform.And through the process
In the film layer that processing is formed, functional material is dry powder-shaped, that is, realizes being uniformly distributed for dry powder-shaped nanometer materials, and conventional
Realize that being uniformly distributed for nanometer materials can only will realize the feature material of dry powder-shaped by being distributed after being configured to solution
Being uniformly distributed for material does not have preferably solution.
While spraying dispersion liquid, up-down rollers wheel rotates, and heat is carried out to flexible substrates by upper roll wheel and hot pressing lower roll wheel
Pressure processing, softens the adhesion resin on flexible substrates surface, is in semi-cured state after softening, so as to effectively paste nanoscale
Functional film layer, makes it bond on a flexible substrate.During above-mentioned heating and softening adhesion resin, upper roll wheel and flexible base
Contact is extruded between adhesion resin on bottom, therefore, the feature film layer formed is uniformly distributed by functional material and is synchronously turned
On print to the adhesion resin of softening.In this way, the nanoscale functional material of dry powder-shaped is transferred in flexible substrates, and in substrate
On be uniformly distributed.In the above process, by the amount of dispersion liquid and the velocity of rotation of disk roller that control spraying, you can effectively control
The thickness of feature film layer, it is preferable that the thickness of feature film layer made from control is in below 500nm, consequently facilitating film is real
Now it is miniaturized.
To sum up, flexible substrates are unreeled along its length direction by volume to volume equipment, wind and move, translational speed and upper roller
Wheel, the velocity of rotation of lower roll wheel keep synchronous, the width of the length covering substrate of upper and lower disk roller, in this way, being sprayed by nozzle
Painting, disk roller are efficiently shifted, it can be achieved that industrial applications with rotating the functional material in i.e. achievable wide area.
The preparation method of present embodiment, with reference to volume to volume production technology, realizes the efficient quick of functional film
Production.Obtained film has the advantages that good uniformity, functional material and substrate associativity is good, production efficiency is high.In addition,
Beneficial effect also resides in：1. the equipment being related to is the upper more typical equipment of industry production, easy to operate, technology maturation.Compare
In traditional process for preparing functional film, cost is effectively reduced, improves efficiency, while it is preferably flexible to obtain quality
Functional film.2. by controlling the transfer rate of volume to volume equipment, spraying rate, nozzle number, roller velocity of rotation, spraying
Environment temperature when concentration of liquid, spraying etc., adjusts the uniformity and thickness of the film obtained.Pass through appropriate running parameter
Adjustment, it is possible to achieve quick production, improves production efficiency.To sum up, the preparation method of present embodiment has efficient, production
The advantages of amount is big, cost is low.
It is as follows, the uniformity and phase of obtained functional film in present embodiment are verified by specific embodiment
Close functional characteristic.
Embodiment 1
Prepare transparent electric heating film.
The use of acrylate type resin is translucent adhesive, the surface that not care about one's appearance is 550mm is provided with translucent adhesive
Polyethylene film is placed on volume to volume drive apparatus.The transmission speed of volume to volume drive apparatus is set to 1000mm/min.Using not
Become rusty smooth metal disk roller made of steel, and axial length is similarly 550mm, a diameter of 1000mm.Hot pressing lower roll wheel is a diameter of
The disk roller of 150mm, hot pressing temperature are arranged to 80 DEG C.Aqueous dispersions (3mg/mL) using nano silver wire are used as spray coating liquor.Using 5
The ultrasonic spraying method of a nozzle is sprayed, and at a distance of 60mm between adjacent nozzle, the translational speed of nozzle is 0.5m/s.By silver
Nanowire dispersion is sprayed into stainless steel upper roller wheel surface, and environment temperature during spraying is 20 DEG C.It is sprayed into stainless steel upper roll wheel
Behind surface, metal grill is formed by nano silver wire after water volatilization.Pass through the rotation hot pressing of upper rod wheel and hot pressing lower roll wheel, silver nanoparticle
Line metal grill is transferred on acrylate type resin binding agent, so as to be formed on polyethylene film.At above-mentioned processing
After managing flow, the transparent electric heating film of preparation is obtained.
As shown in Fig. 2, it is the SEM phenograms of obtained transparent electric heating film, it can be seen that nano silver wire distribution is non-
Often uniformly, without agglomeration.In addition, be 100 Ω/ by the sheet resistance of the transparent electric heating film of four probe sheet resistance instrument measure,
Heat radiation heating efficiency is 70%；Light transmittance mist degree instrument measures light transmittance as 90%.
Embodiment 2
Prepare transparent conductive film.
The use of epoxide resin type resin is translucent adhesive, the surface that not care about one's appearance is 400mm is provided with translucent adhesive
PDMS is placed on volume to volume drive apparatus.The transmission speed of volume to volume drive apparatus is set to 1000mm/min.Use stainless steel
Into smooth metal disk roller, axial length is similarly 400mm, a diameter of 500mm.Hot pressing lower roll wheel is the roller of a diameter of 400mm
Wheel, hot pressing temperature are arranged to 60 DEG C.Spray is used as using N-methyl pyrrolidones (NMP) dispersion liquid (0.05mg/mL) of graphene
Masking liquid.Sprayed using the pneumatic spraying mode of 4 nozzles, be at a distance of 60mm, nozzle movement velocity between adjacent nozzle
0.05m/s.Graphene conductive dispersion liquid is sprayed into stainless steel riders wheel surface, environment temperature during spraying is 60 DEG C.NMP volatilizees
By graphene composition function film layer.By the rotation hot pressing of upper rod wheel and hot pressing lower roll wheel, conductive graphene film layer is turned
On print to epoxy resin, so as to be formed on PDMS.After above-mentioned working process flow, the transparent conductive film of preparation is obtained.
The distribution scenario of the SEM phenograms of the obtained transparent conductive film is similar with Fig. 2, no longer provides one by one herein,
The distribution of nanoscale graphite material is also highly uniform.It is 45 Ω/ to measure sheet resistance by four probe sheet resistance instrument；Light transmittance mist degree instrument
It is 91% to measure light transmittance, mist degree 0.5%.
Embodiment 3
Prepare electromagnetic wave shield film.
The use of transparent epoxy resin is translucent adhesive, the surface that not care about one's appearance is 2000mm is provided with the poly- of translucent adhesive
Imide membrane is placed on volume to volume drive apparatus.The transmission speed of volume to volume drive apparatus is set to 500mm/min.Using stainless
Smooth metal disk roller made of steel, axial length are similarly 2000mm, a diameter of 1000mm.Hot pressing lower roll wheel is a diameter of 80mm
Disk roller, hot pressing temperature be 80 DEG C.Methanol dispersion liquid (5mg/mL) using NANO CRYSTAL COPPER WIRE is used as spray coating liquor.Using 6 electrostatic
Nozzle is sprayed, and at a distance of 40mm between adjacent nozzle, nozzle movement velocity is 0.5m/s.Copper nano-wire dispersion liquid is sprayed into
Stainless steel upper roller wheel surface, environment temperature during spraying are 80 DEG C.After being sprayed into upper roller wheel surface, by copper nanometer after methanol volatilization
Line forms metal grill.By the rotation hot pressing of upper rod wheel and hot pressing lower roll wheel, copper nano-wire metal grill is transferred to epoxy
On resinoid bond, so as to be formed on Kapton.After above-mentioned working process flow, the electromagnetic shielding of preparation is obtained
Film.
Similarly, the distribution scenario of the SEM phenograms of the obtained electromagnetic wave shield film is similar with Fig. 2, not another herein
One provides, and the distribution of copper nano-wire is also highly uniform.It is 200 Ω/ to measure sheet resistance by four probe sheet resistance instrument；Light transmittance mist degree
It is 90% that instrument, which measures light transmittance, and mist degree 0.9%, effectiveness is 30dB in 5GHz.
Embodiment 4
Prepare carbon nanotubes electricity heating film.
The use of polyurethane-type resin is translucent adhesive, the surface that not care about one's appearance is 50mm is provided with poly- the third of translucent adhesive
Alkene film is placed on volume to volume drive apparatus.The transmission speed of volume to volume drive apparatus is set to 100mm/min.Use stainless steel
Into smooth metal disk roller, axial length is similarly 50mm, a diameter of 800mm.Hot pressing lower roll wheel is the roller of a diameter of 200mm
Wheel, hot pressing temperature are arranged to 50 DEG C.Isopropanol dispersion liquid using carbon nanotubes is used as spray coating liquor.Using 2 static nozzles into
Row sprays, and at a distance of 20mm between adjacent nozzle, nozzle movement velocity is 5m/s.Carbon nano tube dispersion liquid is sprayed on stainless steel
Roller surface, environment temperature during spraying are 50 DEG C.After being sprayed into stainless steel upper roller wheel surface, isopropanol volatilizees by carbon nanotubes
Form conductive network.By the rotation hot pressing of upper rod wheel and hot pressing lower roll wheel, conductive network of carbon nanotubes is transferred to polyurethane
On type resinoid bond, so as to be formed on polypropylene film.After above-mentioned working process flow, the carbon nanotubes of preparation is obtained
Electric heating film.
The distribution scenario of the SEM phenograms of the obtained carbon nanotubes electricity heating film is similar with Fig. 2, herein no longer one by one
There is provided, the distribution of carbon nanotubes is also highly uniform.It is 120 Ω/ to measure sheet resistance by four probe sheet resistance instrument；Heat radiation fever effect
Rate is 80%.
Embodiment 5
Prepare titanium dioxide conductive film.
The use of acrylate type resin is translucent adhesive, the surface that not care about one's appearance is 600mm is provided with translucent adhesive
Polypropylene film is placed on volume to volume drive apparatus.The transmission speed of volume to volume drive apparatus is set to 1000mm/min.Using not
Become rusty smooth metal disk roller made of steel, and axial length is similarly 600mm, a diameter of 1000mm.Hot pressing lower roll wheel is a diameter of
The disk roller of 150mm, hot pressing temperature are arranged to 80 DEG C.Aqueous dispersions (3mg/mL) using nano-titanium dioxide are used as spray coating liquor.
Sprayed using 4 static nozzles, at a distance of 40mm between adjacent nozzle, nozzle translational speed is 0.5m/s.By nano-silica
Change titanium dispersion liquid and be sprayed into stainless steel upper roller wheel surface, environment temperature during spraying is 20 DEG C.It is sprayed into stainless steel upper roll wheel table
Behind face, conductive film is formed by titanium dioxide after water volatilization.Pass through the rotation hot pressing of upper roll wheel and hot pressing lower roll wheel, titanium dioxide
Conductive film is transferred on acrylate type resin binding agent, so as to be formed on polypropylene film.Through above-mentioned working process
After flow, the titanium dioxide conductive film of preparation is obtained.
The distribution scenario of the SEM phenograms of the obtained titanium dioxide conductive film is similar with Fig. 2, no longer carries one by one herein
For the distribution of Nano titanium dioxide material is also highly uniform.It is 150 Ω/ to measure sheet resistance by four probe sheet resistance instrument；Printing opacity
Rate is 50%.
Embodiment 6
Prepare CdSe quantum dot nanoparticulate thin films.
The use of polypropylene-acetate resin is translucent adhesive, the surface that not care about one's appearance is 100mm is provided with translucent adhesive
PET be placed on volume to volume drive apparatus.The transmission speed of volume to volume drive apparatus is set to 1000mm/min.Use stainless steel
Into smooth metal disk roller, axial length is similarly 100mm, a diameter of 500mm.Hot pressing lower roll wheel is the roller of a diameter of 200mm
Wheel, hot pressing temperature are arranged to 70 DEG C.Aqueous dispersions (3mg/mL) using CdSe quantum dot are used as spray coating liquor.Using 3 electrostatic
Nozzle is sprayed, and at a distance of 20mm between adjacent nozzle, nozzle movement velocity is 0.8m/s.Quantum dot conductive dispersions are sprayed
To stainless steel upper roller wheel surface, environment temperature during spraying is 50 DEG C.After being sprayed into stainless steel upper roller wheel surface, water volatilization after by
Quantum dot forms conductive film.By the rotation hot pressing of upper rod wheel and hot pressing lower roll wheel, conductive quantum dot film is transferred to
On polypropylene-acetate resin binding agent, so as to be formed on PET.After above-mentioned working process flow, the CdSe of preparation is obtained
Quantum dot nano particle film.
The distribution scenario of the SEM phenograms of the obtained CdSe quantum dot nanoparticulate thin films is similar with Fig. 2, herein no longer
There is provided one by one, the distribution of nanoscale CdSe quantum dot is also highly uniform.Fluorescence quantum efficiency is 20%.
Embodiment 7
Prepare liquid crystal dimming film.
The polyethylene film that surface in embodiment 1 is provided with to translucent adhesive is placed on volume to volume drive apparatus.Volume pair
The transmission speed of volume drive apparatus is set to 500mm/min.Using smooth metal disk roller made of stainless steel, a diameter of 500mm.Heat
The disk roller that disk roller is a diameter of 200mm is depressed, hot pressing temperature is arranged to 60 DEG C.Use the alcohol dispersion liquid of high molecule liquid crystal
(5mg/mL) is used as spray coating liquor.Sprayed using 4 static nozzles, at a distance of 10mm, nozzle movement velocity between adjacent nozzle
For 0.2m/s.The dispersion liquid of high molecule liquid crystal is sprayed into stainless steel upper roller wheel surface, environment temperature during spraying is 40 DEG C.Spray
After being applied to stainless steel upper roller wheel surface, membrane structure is formed by high molecule liquid crystal after ethanol volatilization.By under upper rod wheel and hot pressing
The rotation hot pressing of disk roller, high molecule liquid crystal film is transferred on acrylate type resin binding agent, so as to be formed in polyethylene
On film.After above-mentioned working process flow, the liquid crystal light modulation film of preparation is obtained.
High molecule liquid crystal is evenly distributed in obtained liquid crystal light modulation film, and the light transmittance of film when pressing that is powered is 75%, is closed
Light transmittance is 5% when closing power supply.
Embodiment 8
Prepare self-cleaning film.
The use of polyurethane resin is translucent adhesive, the PET that the surface that not care about one's appearance is 200mm is provided with to polyurethane resin is put
In on volume to volume drive apparatus.The transmission speed of volume to volume drive apparatus is set to 1000mm/min.Use light made of stainless steel
Sliding metal disk roller, axial length are similarly 200mm, a diameter of 500mm.Hot pressing lower roll wheel be a diameter of 200mm disk roller, hot pressing
Temperature setting is 70 DEG C.Tetrahydrofuran dispersion liquid (1mg/mL) using Nano particles of silicon dioxide is used as spray coating liquor.Using 4
Static nozzle is sprayed, and at a distance of 30mm between adjacent nozzle, nozzle movement velocity is 0.9m/s.By Nano particles of silicon dioxide
Dispersion liquid is sprayed into stainless steel upper roller wheel surface, and environment temperature during spraying is 30 DEG C.After being sprayed into stainless steel upper roller wheel surface,
The feature film layer being made of after tetrahydrofuran volatilization Nano particles of silicon dioxide.Pass through the rotation of upper rod wheel and hot pressing lower roll wheel
Hot pressing, Nano particles of silicon dioxide film is transferred on polyurethane resin, so as to be formed on PET.Through above-mentioned working process
After flow, the self-cleaning function film of preparation is obtained.
Nano particles of silicon dioxide is evenly distributed in obtained self-cleaning function film, is tested by contact angle tester
Contact angle is obtained as 160 °.
Above content is that a further detailed description of the present invention in conjunction with specific preferred embodiments, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
Some replacements or obvious modification are made on the premise of not departing from present inventive concept, and performance or purposes are identical, should all be considered as
Belong to protection scope of the present invention.
Claims (10)
- A kind of 1. preparation method of functional film, it is characterised in that：Comprise the following steps：S1, surface is set cementitious The flexible substrates of resin are deployed on volume to volume drive apparatus, and smooth upper roll wheel is set above the flexible substrates, in institute State and hot pressing lower roll wheel is set below flexible substrates；S2, concentration is configured to as 0.1 by nano level functional material by dispersant The dispersion soln of~5mg/mL is as spray coating liquor；S3, is heated to 5~100 DEG C, by described in by environment temperature or the upper roll wheel Spray coating liquor even application is to the upper roller wheel surface；Meanwhile the upper roll wheel and hot pressing lower roll wheel are rotated, pass through the upper roll wheel Hot pressing is carried out to the flexible substrates with hot pressing lower roll wheel, softens the adhesion resin, and make on the upper roll wheel Functional material transfer is bonded on the adhesion resin after softening, and it is thin that feature of the surface formed with feature film layer is made Film.
- 2. the preparation method of functional film according to claim 1, it is characterised in that：In step S3, the feature The thickness of film layer is in below 500nm.
- 3. the preparation method of functional film according to claim 1, it is characterised in that：The material of the upper roll wheel is gold Category, graphite, macromolecule or ceramics；The metal is copper, one kind in aluminium alloy, magnesium alloy, iron, nickel, stainless steel.
- 4. the preparation method of functional film according to claim 1, it is characterised in that：The material of the upper roll wheel is to lead Electric material, in step S3, by pneumatic spraying, ultrasound spraying or electrostatic spraying mode by the spray liniment even application to institute State upper roller wheel surface；Alternatively, the material of the upper roll wheel is isolation material, in step S3, sprayed by pneumatic spraying or ultrasound Painting mode is by the spray liniment even application to the upper roller wheel surface.
- 5. the preparation method of functional film according to claim 1, it is characterised in that：The length of the upper roll wheel and institute It is equal to state the width of flexible substrates, diameter is more than 100mm；The length of the lower roll wheel is equal with the width of the flexible substrates, Diameter is more than 100mm.
- 6. the preparation method of functional film according to claim 1, it is characterised in that：The nano level feature material Material includes graphene, carbon nanotubes, NANO CRYSTAL COPPER WIRE, nano-silver thread, nanometer nickel wire, gold nanowire, conducting polymer, titanium dioxide Nano particle, Zinc oxide nanoparticle, quantum dot nano-particle, ferriferrous oxide nano-particle, spherical nano silver, macromolecule liquid In brilliant nano-particle, Nano particles of silicon dioxide, organic metal framework compound, nano hydrotalcite, perovskite nanocrystal One or more kinds of mixing.
- 7. the preparation method of functional film according to claim 1, it is characterised in that：The dispersant for water, ethanol, Methanol, isopropanol, acetone, hexane, octane, butanone, tetrahydrofuran, dimethylformamide, ethyl acetate, chloroform, toluene, diformazan One or more mixing in base carbonic ether, ethyl carbonate fat.
- 8. the preparation method of functional film according to claim 1, it is characterised in that：The adhesion resin includes third Olefin(e) acid ester type resin, epoxide resin type resin, phenolic resin, Lauxite, phenolic aldehyde-composite epoxy resin, epoxy-acrylate Compound light-cured resin, polyurethane-type resin, polyester resin, the compound light-cured resin of polyester-acrylate, polyamides are sub- One or more mixing in amine, polyethylene-vinyl acetate etc..
- 9. the preparation method of functional film according to claim 1, it is characterised in that：Obtained functional film is to lead It is conductive film, electromagnetic wave shield film, optical thin film, piezoelectric membrane, ferroelectric thin film, electroluminescent heating film, electroluminescent film, electroluminescent One kind in optically variable films, liquid crystal light modulation film, automatically cleaning film.
- A kind of 10. functional film according to made from claim 1~9 any one of them preparation method.
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