CN109081931A - A kind of Electrostatic Absorption film of flexible expandable and preparation method thereof - Google Patents
A kind of Electrostatic Absorption film of flexible expandable and preparation method thereof Download PDFInfo
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- CN109081931A CN109081931A CN201810894671.5A CN201810894671A CN109081931A CN 109081931 A CN109081931 A CN 109081931A CN 201810894671 A CN201810894671 A CN 201810894671A CN 109081931 A CN109081931 A CN 109081931A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J5/18—Manufacture of films or sheets
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/52—Electrically conductive inks
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
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Abstract
The invention discloses Electrostatic Absorption film of a kind of flexible expandable and preparation method thereof, which includes dielectric substrate layer, conductive electrode layer and dielectric insulation layer.Dielectric substrate layer is made of flexible material；Conductive electrode layer is the electrically conductive ink mixed by carbon black and flexible material, and is fitted in dielectric substrate layer surface；Conductive electrode layer is covered by dielectric insulation layer, and dielectric insulation layer is by the electrode isolation of conductive electrode layer.First dielectric substrate layer is cast on the PET film surface layer for being coated with sacrificial layer according to required thickness when production, then electrically conductive ink needed for configuring, electrically conductive ink is printed onto dielectric substrate layer surface using screen printing technique, heating carries out wiring using copper foil after its solidification, dielectric insulation layer is finally cast in electrode surface according to required thickness, heating is prepared after its solidification and completed.Have the characteristics that high resiliency, high-flexibility, high conductivity, high pressure resistant using Electrostatic Absorption film made from the process, there is huge application potential in flexible or software Electrostatic Absorption technical field.
Description
Technical field
The invention belongs to the Electrostatic Absorption films and its preparation of Electrostatic Absorption technical field more particularly to a kind of flexible expandable
Method.
Background technique
Electrostatic Absorption is a kind of electrically controllable adsorption technology, by applying electricity to the electrode on adsorbent equipment (adsorbed film)
Pressure generates electrostatic charge on the body surface being adsorbed, and the charge interaction on electrode and body surface is to generation and object
Electrostatic adsorption force between body surface face.Electrostatic Absorption film generally comprises three layers of medium, respectively dielectric substrate layer, conductive electrode and
Dielectric insulation layer.Dielectric substrate layer is the carrier as electrode, and is in direct contact with the electrode, and the soft of entire adsorbed film can be shown
Tough intensity.Conductive electrode is the core of entire Electrostatic Absorption film, their effect is generated using between positive and negative electrode
High voltage electric field to be adsorbed object and generates electrostatic induction or dielectric polarization, to produce in adsorbed film and being adsorbed between physics
Raw adsorption capacity.Electrode connect (usual 3KV or more) with high voltage power supply, and is embedded into dielectric substrate.Dielectric insulation layer and quilt
Absorbent bodies directly contact, for be isolated electrode to avoid between adjacent electrode electrical breakdown or with exterior object occur short circuit,
Electrode protective effect is played, certain buffer function can also be played.The thickness of dielectric substrate layer can be according to reality or the case where need
Depending on, but usually both greater than 25 μm.The thickness of dielectric insulation layer gets over Bao Yuehao in the case where meeting not breakdown, in this way can be most
The effect of bigization electrostatic adsorption force, this is usually related with the compressive resistance of the layer material.
Traditional Electrostatic Absorption film has the rigid electric pole plate made of circuit common board machining process, and using no glue
The flexible electrostatic adsorbed film of cathode copper and high molecular material polyimides (PI) film as substrate processing and fabricating, for above-mentioned two
Kind Electrostatic Absorption film, rigid electric pole plate can generate biggish adsorption capacity on the glass surface, and in painting metope, plank etc.
The adsorption capacity generated on versus rough surfaces is very small.Main cause is glass surface smoother, and rigid electric pole plate is being powered
After can realize and fit closely absorption with it, and on the surface of the painting relative coarseness such as metope and plank, rigid electric pole plate
It can not realize and fit closely with it, lead to the decline of adsorption capacity.Traditional flexible electrical pole plate uses this macromolecule of polyimides
Material makes it have certain flexibility, on glass, painting metope, the surfaces such as plank compared to rigid electric pole plate for
Generate biggish adsorption capacity.But due to the non-stretchable property of the material, it is caused to there is obviously not body surface adaptability
Foot, (different object), which can not achieve, under complex environment effectively fits closely, therefore this kind of Electrostatic Absorption film is also worth
It must improve.In short, the problems such as existing Electrostatic Absorption film is due to low, the non-stretchable property of elasticity and poor surface adaptability at present and limit
Its application range is made.
Summary of the invention
For the defects in the prior art, the present invention provides Electrostatic Absorption film and its preparation side of a kind of flexible expandable
Method.
A kind of Electrostatic Absorption film of flexible expandable of the invention, including dielectric substrate layer, conductive electrode layer and dielectric are exhausted
Edge layer, the dielectric substrate layer are made of flexible material；The conductive electrode layer is fitted in dielectric substrate layer surface, and is situated between
Electric insulation layer is covered, and dielectric insulation layer is by the electrode isolation of conductive electrode layer；It is high-elastic due to requiring Electrostatic Absorption film to have
Property and tensility, and carrier of the dielectric substrate layer as entire adsorbed film, thus the layer material characteristic will directly influence it is whole
A adsorbed film flexibility.The present invention (can select different types of flexibility as dielectric substrate layer using flexible material according to demand
Material), the flexibility of this kind of material, non-linear and viscoplasticity are made full use of to realize that tensility and body surface height adapt to
The above-mentioned requirements such as property.
Further, the flexible material is rubber, common silica gel, polymer or elastomer silicone；This can be made full use of
The flexibility of class material, non-linear and viscoplasticity realize tensility and body surface high degree of adaptability.
Further, the conductive electrode layer is made of electrically conductive ink；The electrically conductive ink is by conductive carbon black and dielectric
The compound that base layer material is mixed together according to the mass ratio of 1%-24%；In order to meet above-mentioned requirements (high resiliency, Gao Wen
Qualitative, stretchable deformation, height surface adaptability etc.), it is necessary to improve the reliability of electrode.Electrode allows for withstanding greater than
20% repetitive strain is without rupturing (cracking), degrading, be layered or lose electric conductivity；In addition, in order not to make entire mechanical knot
Structure is too hard, and electrode must be soft and submissive, meanwhile, while electrode material keeps These characteristics, also need to dielectric substrate
Surface layer has height adhesive ability, otherwise will lead to electrode delamination phenomenon；The present invention is answered using a kind of entitled " electrically conductive ink "
Object is closed as electrode layer, electrically conductive ink is mixed together according to a certain percentage by conductive carbon black and dielectric substrate layer material
(ratio is usually mass ratio 1%-24% to compound, selects different ratio according to different materials, ratio is too low to lead to electric conductivity too
Difference, too high to lead to electrode layer excessive high hardness, excessively mechanization), it is had good robustness after compound solidification, to dielectric base
Bottom surface has good adhesive ability；It, not only can be in addition, the present invention prints flexible electrode using screen printing technique
The arbitrarily parameters such as control desired electrode pattern, electrode size, and equipment is cheap, it is easy to operate: only to need a simple print
The printing of electrode can be completed in brush platform, a customization halftone, an additional scraper, unlike other printing technologies such as bat printing needs
Very big costly printing press.
Further, the dielectric insulation layer can be identical with dielectric substrate layer material, other high dielectric properties, low viscous can also be used
The conformable material of stickiness；Dielectric insulation layer requires have similar characteristic with basal layer, can be used under normal conditions and dielectric base
The identical material of bottom；Can also be used in certain special cases possess high-dielectric coefficient, the material of low surface viscosity serves as
Insulating layer；High-dielectric coefficient can make adsorbed film in the same circumstances lead to high voltage, low surface viscosity can reduce adsorbed film by
In material itself viscosity and to object generate suction-operated (mainly include intermolecular active force-Van der Waals force, negative pressure
Power etc.), to expand electrostatic adsorption；Using high flexibility material (silica gel, rubber, elastomer etc.) as the substrate of adsorbed film,
With carbon black (BP2000, Vulcan XC series, a variety of different type carbon blacks such as Monarch 660R, Ketjenblack series) with
Base material mixing is used as compliant electrodes, using high dielectric, low viscous flexible material or consistent with base material exhausted as dielectric
Edge layer.The single manufacturing method of polyimides and copper wire can only be used by improving conventional flex Electrostatic Absorption film, it is intended that improved electrostatic and inhaled
The diversity of membrane materials'use.Multiple material, which is combined, prepares adsorbed film, can carry out the comparative experiments of material, explores all kinds of soft
Influence of the property material to Electrostatic Absorption effect.
A kind of preparation method of the Electrostatic Absorption film of flexible expandable of the invention, when production first by dielectric substrate layer according to
Required thickness is cast in the PET(polyethylene terephthalate for being coated with sacrificial layer) on film surface layer, needed for then configuring
Electrically conductive ink is printed onto dielectric substrate layer surface using screen printing technique by electrically conductive ink, and heating uses copper after its solidification
Foil carries out wiring, and dielectric insulation layer is finally cast in electrode surface according to required thickness, and heating is prepared after its solidification and completed,
Sacrificial layer can reduce power required when separating dielectric substrate layer with PET film, to reduce adsorbed film during the separation
Mechanically deform protects it to be pulled bad because too big power is received.
Further, the sacrificial layer can reduce power required when separating dielectric substrate layer with PET film, to reduce
The mechanically deform of adsorbed film during the separation protects it to be pulled bad because too big power is received.The sacrificial layer uses
Following method preparation:
A1, one piece of clip appropriate length and width, certain thickness high quality P ET film (surface corrugationless from PET coiled material
Or damaged)；
A2, prepare to sacrifice solution in a beaker, the polyacrylic acid of 5% weight is specifically added into isopropanol；
A3, PET film is cleaned using the lint-free cloth of infiltration isopropanol, cleans vacuum tank using the lint-free cloth of infiltration isopropanol, and
PET film after cleaning is placed in vacuum tank and opens vacuum pump and removes moisture removal；
A4, the upper surface that PET film is cleaned using the lint-free cloth of infiltration isopropanol；
A5, the gap of the spreader of variable gap is adjusted to desired height；
A6, the linear coating for sacrifice solution being poured in PET film and being carried out using spreader certain speed；
A7, spreader is lifted after the completion of coating and spreader is cleaned using the lint-free cloth of infiltration hot water；
A8, the PET film that finishes of coating is put into vacuum tank deaeration and stood it is allowed to spontaneously dry.
Further, the dielectric substrate layer pours with the following method:
B1, baking oven is preheated；
B2, in a beaker by dielectric substrate layer material used (all kinds of silica gel, elastomer silicone, rubber etc. can be selected)
Host agent and curing agent (or each component) are mixed in a certain ratio, and coordinative solvent are added later to reduce its viscosity；
B3, it mixed base layer material is put into planetary mixer is sufficiently stirred and deaerates；
B4, the gap of the spreader of variable gap is adjusted to desired height, basal layer mixed liquor is poured on sacrificial layer
It in PET film, is coated in entire PET film with certain even speed, coating stands a period of time etc. after finishing
To the solvent evaporation in pouring layer, substrate layer film is made；
B5, the PET film with dielectric substrate layer is transferred on glass plate and glass plate is put into solidification (different materials in baking oven
Material has different solidification temperature and curing time)；
B6, spreader is cleaned using the lint-free cloth of infiltration isopropanol；
After the completion of b7, solidification, substrate layer film is removed from baking oven, cooling a period of time is simultaneously covered in substrate layer film upper surface
One layer of PET film of lid is to completely cut off pollutant (dust, particle in air etc.).
Further, the conductive electrode layer is prepared and is printed with the following method:
The preparation method comprises the following steps:
C1, a certain amount of carbon black and isopropanol (for dissolving carbon black) are added in a beaker, are carried out using planetary mixer
Adequately it is dispersed with stirring；
C2, a certain amount of dielectric substrate layer material (mixing in solidification ratio) and isooctane are added into beaker (for dissolving base
Primer) it is sufficiently mixed using planetary mixer progress 20min；
The isopropanol in a period of time waiting electrically conductive ink and isooctane volatilization are stood after the completion of c3, stirring；
In the present invention, prepare the planetary stirrer during electrically conductive ink play the role of it is key: for dispersed low, specific surface
For the big carbon black (BP2000, Ketjenblack series etc.) of product, this kind of carbon black is not easy to mix with flexible material, need to use row
Simultaneously certain solvent is added to make the two adequately mixing in star blender；The carbon black small for good dispersion, specific surface area
(Vulcan XC series, Monarch 660R etc.), need to can only make the two adequately mixing with Simple stirring rod；Planet stirring
The use of device can make electrically conductive ink have more materials to select.
Printing process are as follows:
D1, the customization halftone with required electrode pattern and size is installed on silk-screen printing dedicated operations platform；
D2, the PET film with dielectric substrate layer is fixed on station, adjustment halftone position keeps pattern alignment basal layer thin
Center membrane, and the PET film for dielectric substrate layer film upper surface of tearing；
D3, increase by two pieces between halftone and PET film with dielectric substrate layer and increase plate, halftone to dielectric substrate layer film
The distance between surface is known as net away from, certain net away from being more clear of can making that pattern prints and uniformly；
D4, the electrically conductive ink that preparation is completed is poured over halftone side, is carried out back and forth toward duplicating and as far as possible using Special scraper knife
Control keeps scraper at the uniform velocity；
D5, after finishing printing, it will be imprinted on PET and the substrate layer film with electrode on station from removing and be put into baking oven
Solidify certain time；
After d6, solidification, it will be imprinted on PET and the substrate layer film with electrode take out from baking oven, when one section cooling
Between.
The present invention prints flexible electrode using screen printing technique, not only can arbitrarily control desired electrode pattern,
The parameters such as electrode size, and equipment is cheap, easy to operate: only one simple print station of needs, a customization halftone, additional one
The printing of electrode can be completed in a scraper.Unlike other printing technologies such as bat printing needs very big costly printing press.
Further, wiring connection and covering dielectric insulation layer are constructed with the following method:
E1, two pieces of copper foil grown in right amount from clip on copper foil coiled material；
E2, the connecting part set according to electrode pattern before position pasted, and confirm the tightness of stickup, avoid copper
Foil edge tilts；
E3, a beaker is taken, dielectric insulation layer material host agent and curing agent is added, is sufficiently stirred and is deaerated using planetary stirrer
(as dielectric substrate layer preparation method)；
E4, dielectric insulation layer material is poured at electrode connection, using the spreader of variable gap, be adjusted to desired height, with
Certain even speed is coated, and guarantees that insulating materials can cover entire electrode pattern and part copper foil in coating process,
The foil section exposed is for connecting high voltage；
It is cleaned after e5, spreader use with the lint-free cloth of infiltration isopropanol；
The adsorbed film with PET film is put into baking oven after e6, coating and solidifies certain time；
After the completion of e7, solidification, the adsorbed film with PET film is taken out from baking oven, slowly tears and is sticked to dielectric substrate layer
The Electrostatic Absorption film preparation of PET film together, a complete flexible expandable finishes.
The beneficial effects of the present invention are: the Electrostatic Absorption film of a kind of flexible expandable and preparation method thereof of the invention, system
Electrostatic Absorption film have the characteristics that high resiliency, high-flexibility, high conductivity, high pressure resistant, in flexibility or software Electrostatic Absorption
Technical field has huge application potential；Used material includes that all base materials, carbon black and insulating materials all may be used
Directly directly buy from the market, and price material benefit, per Master Cost needed for a piece of adsorbed film about in RMB10 member hereinafter,
And preparation process is high-efficient, can prepare, have a good application prospect in batch.
Specific embodiment
The embodiment of technical solution of the present invention is described in detail below.Following embodiment is only used for clearly
Illustrate technical solution of the present invention, therefore be only used as example, and not intended to limit the protection scope of the present invention.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
Embodiment one:
The preparation of sacrificial layer: sacrificial layer can reduce power required when separating dielectric substrate layer with PET film, to reduce
The mechanically deform of adsorbed film during separation protects it to be pulled bad because too big power is received.Specific preparation process are as follows:
A1, the high quality P ET that one block length of clip is 200mm, width is 100mm from the PET coiled material with a thickness of 200 μm are thin
Film (surface corrugationless or breakage)；
A2, prepare to sacrifice solution (5% polyacrylic acid by weight in isopropanol) in the beaker of a 50ml: use
32g isopropanol and 8g polyacrylic acid solution (25% accounting) are sufficiently mixed simultaneously shaken well by Simple stirring rod；
A3, PET base is cleaned using the lint-free cloth of infiltration isopropanol, cleans vacuum tank using the lint-free cloth of infiltration isopropanol.And
PET base after cleaning is placed in vacuum tank and opens vacuum pump and removes moisture removal 5min；
A4, the upper surface that PET base is cleaned using the lint-free cloth of infiltration isopropanol；
A5, the gap of variable gap spreader (KTQ-II, Shanghai Hu Yueming scientific instrument Co., Ltd) is adjusted to 50 μm；
A6,2ml is sacrificed solution on the pet substrate and is coated with using the constant velocity linear that spreader carries out 5mm/s；
A7, lifted after the completion of coating and spreader is cleaned using the lint-free cloth of infiltration hot water；
A8, the PET that finishes of coating is put into vacuum tank deaeration and stood it is allowed to spontaneously dry.
Dielectric substrate layer pours:
B1, baking oven is preheating to 80 DEG C；
B2, elastomer silicone (BD-KYN, Hangzhou Bao Er get new material Science and Technology Ltd.) is selected to be used as dielectric substrate layer material
Material.BD-KYN host agent 10g and curing agent 1g is added in the beaker of a 50ml, 2g silica gel solvent (OS-20, Dow are added later
Corning it) reduces its viscosity, is sufficiently mixed uniformly；
B3, mixed base layer material is put into planetary mixer (Thinky ARE-100), setting revolving speed is
10min is sufficiently stirred in 2000rpm/min, and it is the degassing stirring that 2200rpm/min carries out 2min that revolving speed is arranged again later；
Beaker is taken out after b4, degassing, the height of variable gap spreader (KTQ-II) is adjusted to 100 μm, by basal layer
Mixed liquor is poured in the PET film with sacrificial layer, is coated in entire PET base with the even speed of 5mm/s, coating
5min is stood after finishing waits the solvent in basal layer to evaporate；
B5, the PET with dielectric substrate layer film is transferred to together on glass plate and glass plate is put into baking oven with 80 DEG C
Solidify 30min；
B6, variable gap spreader is cleaned using the lint-free cloth of infiltration isopropanol；
After the completion of b7, solidification, will be removed from baking oven with the PET of dielectric substrate layer film, after cooling 5min on film table
Face covers one layer of PET film with air pollution isolation object (dust, particle etc.)；
The preparation and printing of flexible electrode:
The preparation of electrically conductive ink:
C1,0.8g carbon black (BP2000, Cabot) and 10g aqueous isopropanol are added in a 50ml beaker (for dissolving carbon
It is black), it puts it into planetary mixer (Thinky ARE-100), setting revolving speed is 2000rpm/min, and 10min is sufficiently stirred；
C2, above-mentioned beaker is taken out from blender, then BD-KYN host agent 7.2g, curing agent 0.7g and 6g isooctane are added inward
(for dissolving base layer material) is placed again into planetary mixer (Thinky ARE-100), and setting revolving speed is 2000rpm/
10min is sufficiently stirred in min；
The isopropanol and isooctane stood in 24 hours waiting ink after the completion of c3, stirring volatilizees to the greatest extent.
It prints electrode:
D1, the customization halftone with required electrode pattern and size (selecting classical comb-like electrode) is installed to silk-screen printing
On dedicated operations platform；
D2, the PET with dielectric substrate layer film is fixed on station, adjustment halftone position keeps pattern alignment basal layer thin
Center membrane, and the PET for dielectric substrate layer film upper surface of tearing；
D3, plate is increased in two pieces of increase between halftone and PET, with a thickness of 2mm；
D4, the electrically conductive ink that preparation is completed is poured over halftone side, is carried out back and forth toward duplicating and as far as possible using Special scraper knife
Control keeps scraper at the uniform velocity；
D5, after finishing printing, it will be imprinted on PET and the dielectric substrate layer film with electrode removed and is put into from station
80 DEG C of solidification 30min in baking oven；
After d6, solidification, it will be imprinted on PET and the dielectric substrate layer film with electrode take out from baking oven, it is cooling
10min。
Construct the covering of wiring connection and dielectric insulation layer:
Clip length is 2cm on e1, the copper foil coiled material for being 1cm from width two pieces of copper foil；
E2, the connecting part set according to electrode pattern before position pasted, and confirm the tightness of stickup, avoid
Copper foil edge tilts；
E3, elastomer (Sylgard 184, Dow Corning) is selected to be used as dielectric insulation layer material.Take the burning of a 50ml
184 host agent 8g of Sylgard and curing agent 0.8g is added in cup, is sufficiently mixed uniformly；Mixed insulating layer material is put into row
In star blender (Thinky ARE-100), setting revolving speed is 2000rpm/min, and 10min is sufficiently stirred, revolving speed is arranged again later
The degassing stirring of 2min is carried out for 2200rpm/min；
Beaker is taken out after e4, degassing, dielectric insulation layer material is poured at electrode connection, uses variable gap spreader
(KTQ-II), highly for 200 μm, (electrode layers thickness is generally below 10 μm, can be neglected, thickness of insulating layer is at this time for adjustment
100 μm=100 μm of 200 μm-base layer thickness), it is coated in entire PET base with the even speed of 5mm/s, it is coated
Guarantee that insulating materials Sylgard 184 can cover the copper foil of entire electrode pattern and majority in journey, the copper exposed
Foil part is for connecting high voltage；
It is cleaned after e5, spreader use with the lint-free cloth of infiltration isopropanol；
Above-mentioned adsorbed film is put into 80 DEG C of solidification 30min in baking oven after e6, coating；
After the completion of e7, solidification, it is taken out from baking oven, is slowly torn and the coherent PET film of dielectric substrate layer, one
A complete novel flexible Electrostatic Absorption film preparation finishes.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (9)
1. a kind of Electrostatic Absorption film of flexible expandable, it is characterised in that: exhausted including dielectric substrate layer, conductive electrode layer and dielectric
Edge layer, the dielectric substrate layer are made of flexible material；The conductive electrode layer is fitted in dielectric substrate layer surface, and is situated between
Electric insulation layer is covered, and dielectric insulation layer is by the electrode isolation of conductive electrode layer.
2. a kind of Electrostatic Absorption film of flexible expandable according to claim 1, it is characterised in that: the flexible material is
Rubber, common silica gel, polymer or elastomer silicone.
3. a kind of Electrostatic Absorption film of flexible expandable according to claim 1, it is characterised in that: the conductive electrode layer
It is made of electrically conductive ink；The electrically conductive ink is to be mixed by conductive carbon black and dielectric substrate layer material according to the mass ratio of 1%-24%
Close compound made of stirring.
4. a kind of Electrostatic Absorption film of flexible expandable according to claim 1, it is characterised in that: the dielectric insulation layer
Can be identical as dielectric substrate layer material, the conformable material of other high dielectric properties, low viscosity can also be used.
5. a kind of preparation method of the Electrostatic Absorption film of flexible expandable, it is characterised in that: first press dielectric substrate layer when production
It is cast according to required thickness on the PET film surface layer for being coated with sacrificial layer, electrically conductive ink needed for then configuring uses silk-screen printing
Electrically conductive ink is printed onto dielectric substrate layer surface by technology, and heating carries out wiring using copper foil after its solidification, finally by dielectric
Insulating layer is cast in electrode surface according to required thickness, and heating is prepared after its solidification and completed.
6. a kind of preparation method of the Electrostatic Absorption film of flexible expandable according to claim 5, it is characterised in that: described
Sacrificial layer is prepared with the following method:
A1, one piece of PET film of clip from PET coiled material；
A2, prepare to sacrifice solution in a beaker, the polyacrylic acid of 5% weight is specifically added into isopropanol；
A3, PET film is cleaned using the lint-free cloth of infiltration isopropanol, cleans vacuum tank using the lint-free cloth of infiltration isopropanol, and
PET film after cleaning is placed in vacuum tank and opens vacuum pump and removes moisture removal；
A4, the upper surface that PET film is cleaned using the lint-free cloth of infiltration isopropanol；
A5, the gap of the spreader of variable gap is adjusted to desired height；
A6, sacrifice solution is poured in PET film and is linearly coated with using spreader；
A7, spreader is lifted after the completion of coating and spreader is cleaned using the lint-free cloth of infiltration hot water；
A8, the PET film that finishes of coating is put into vacuum tank deaeration and stood it is allowed to spontaneously dry.
7. a kind of preparation method of the Electrostatic Absorption film of flexible expandable according to claim 6, it is characterised in that: described
Dielectric substrate layer pours with the following method:
B1, baking oven is preheated；
B2, dielectric substrate layer material each component used is thoroughly mixed in a beaker, coordinative solvent is added later
Reduce its viscosity；
B3, mixed base layer material is put into planetary mixer and stirs and deaerates；
B4, the gap of the spreader of variable gap is adjusted to desired height, basal layer mixed liquor is poured on sacrificial layer
It in PET film, is coated in entire PET film, coating waits the solvent evaporation in pouring layer after finishing；
B5, the PET film with dielectric substrate layer is transferred on glass plate and glass plate is put into baking oven and solidifies；
B6, spreader is cleaned using the lint-free cloth of infiltration isopropanol；
After the completion of b7, solidification, substrate layer film is removed from baking oven, cooling a period of time is simultaneously covered in substrate layer film upper surface
One layer of clean PET film of lid is to completely cut off the pollutant in air.
8. a kind of preparation method of the Electrostatic Absorption film of flexible expandable according to claim 7, it is characterised in that: described
Conductive electrode layer is prepared and is printed with the following method:
The preparation method comprises the following steps:
C1, carbon black and isopropanol are added in a beaker, are stirred dispersion using planetary mixer；
C2, it dielectric substrate layer material and isooctane is added into above-mentioned beaker is stirred mixing using planetary mixer；
Isopropanol and the isooctane volatilization waited in electrically conductive ink is stood after the completion of c3, stirring；
Printing process are as follows:
D1, the customization halftone with required electrode pattern and size is installed on screen printing operation platform；
D2, the PET film with dielectric substrate layer is fixed on station, adjustment halftone position keeps pattern alignment basal layer thin
Center membrane, and the PET film for dielectric substrate layer film upper surface of tearing；
D3, increase by two pieces between halftone and PET film with dielectric substrate layer and increase plate；
D4, the electrically conductive ink that preparation is completed is poured over halftone side, toward duplicating and controls holding back and forth using scraper progress
Scraper is at the uniform velocity；
D5, after finishing printing, the substrate layer film with electrode is solidified from removing and be put into baking oven on station；
After d6, solidification, the substrate layer film with electrode is taken out from baking oven, is cooled to room temperature.
9. a kind of preparation method of the Electrostatic Absorption film of flexible expandable according to claim 8, it is characterised in that: use
Following method constructs wiring connection and covering dielectric insulation layer:
E1, from two pieces of clip copper foil on copper foil coiled material；
E2, the connecting part set according to electrode pattern before position pasted, and confirm the tightness of stickup, avoid copper
Foil edge tilts；
E3, a beaker is taken, dielectric insulation layer each component material is added, is stirred and is deaerated using planetary stirrer；
E4, dielectric insulation layer material is poured at electrode connection, using the spreader of variable gap, be adjusted to desired height, with
Even speed is coated, and guarantees that insulating materials can cover entire electrode pattern and part copper foil in coating process, remaining
The foil section exposed is for connecting high voltage；
It is cleaned after e5, spreader use with the lint-free cloth of infiltration isopropanol；
The adsorbed film with PET film is put into baking oven after e6, coating and is solidified；
After the completion of e7, solidification, the adsorbed film with PET film is taken out from baking oven, tears and sticks together with dielectric substrate layer
PET film, the Electrostatic Absorption film preparation of a complete flexible expandable finishes.
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| CN109825888A (en) * | 2019-03-19 | 2019-05-31 | 青岛大学 | A kind of doughnut and its preparation facilities based on electrostriction material |
| CN112442246A (en) * | 2020-11-16 | 2021-03-05 | 柔微智能科技(苏州)有限公司 | Preparation method of flexible pressure sensing film, tumble alarm flexible floor and preparation method |
| CN113174137A (en) * | 2021-03-16 | 2021-07-27 | 浙江大学 | Heat-preservation and heat-insulation flexible composite material with low heat conductivity coefficient and high porosity and preparation method thereof |
| CN117879380A (en) * | 2024-03-13 | 2024-04-12 | 之江实验室 | Electrostatic driver based on paper folding structure and preparation method thereof |
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| CN117879380A (en) * | 2024-03-13 | 2024-04-12 | 之江实验室 | Electrostatic driver based on paper folding structure and preparation method thereof |
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