CN107039123A - A kind of electrostatic Laser Desorption graphene technology prepares carbon-coated aluminum foils device and method - Google Patents
A kind of electrostatic Laser Desorption graphene technology prepares carbon-coated aluminum foils device and method Download PDFInfo
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- CN107039123A CN107039123A CN201710317287.4A CN201710317287A CN107039123A CN 107039123 A CN107039123 A CN 107039123A CN 201710317287 A CN201710317287 A CN 201710317287A CN 107039123 A CN107039123 A CN 107039123A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0033—Apparatus or processes specially adapted for manufacturing conductors or cables by electrostatic coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/003—Apparatus or processes specially adapted for manufacturing conductors or cables using irradiation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
Carbon-coated aluminum foils device and method is prepared the present invention relates to surface treatment and technical field of film preparation, more particularly to a kind of electrostatic Laser Desorption graphene technology.Including transmitting device, cleaning and drying device, detection unit, laser cell, coating unit, computer, body；Cleaning and drying device, detection unit, laser cell, coating unit are installed on body successively, and computer passes through cable connection and controlling transmission device, cleaning and drying device, detection unit, laser cell, coating unit.Graphene is well mixed by the present invention with carbon dust, using electrostatic principle last layer carbon dust is sprayed in aluminium foil surface, by improving production efficiency to the accurate control for applying carbon process, reduce production cost, ensure that the carbon-coating of aluminium foil surface is evenly distributed densification, carbon dust thickness uniformity, makes carbon coating be combined with foil substrate closer, so as to obtain the carbon-coated aluminum foils material that well conducting, strength and toughness are good, capacity is big.
Description
Technical field
The present invention relates to surface treatment and technical field of film preparation, more particularly to a kind of electrostatic Laser Desorption graphene skill
Art prepares carbon-coated aluminum foils device and method.
Background technology
It is well known that can obtain the aluminium foil products of function admirable by calendering by casting aluminium ingot, its purposes is according to using
Environment, human demand and particular/special requirement etc. are widely used in food, beverage, cigarette, medicine, photographic plate, family daily necessity etc.
Different field, is one of indispensable material in human lives.Particularly in battery, capacitor area, processed by rafifinal
Obtained light paper tinsel is obtaining the positive and negative pole material of function admirable after excessive erosion chemical conversion or face coat, using extremely widespread.
Electrode foil has popularized industrialization as the main positive and negative pole material of battery, electrolytic capacitor, at present towards Gao Rong
Amount, the direction that stores greatly are developed, and it is surface hole quantity and depth through excessive erosion to influence the key factor of its performance, it is considered to
The phenomenons such as perforation short circuit are likely to result in the size of current difference for flowing through aluminium foil, the development of electrode foil is govern always.It is applied to
The carbon-coated aluminum foils of battery and capacitor, turn into the focus exploitation material of industry, its preparation method and technique are also continuous at present
Improve and innovate, traditional carbon-coated aluminum foils preparation technology mainly has following key step：First, using rafifinal by rolling
System, annealing, surface treatment etc. obtain the light paper tinsel of different-thickness requirement；Secondly, carbon-coated aluminum foils are obtained by coating processes；Again finally
The product of technical requirements is met by post processing.
Carbon-coated aluminum foils are quickly grown in recent years, and it is one prominent that surface treatment is carried out to battery conductive base material using functional coating
The technological innovation of broken property, carbon-coated aluminum foils are exactly by applying by the good nano particle of the electric conductivity such as scattered C particles, graphite
Coating process, being evenly coated with or stick to matrix surface, there is provided assemble active principle while preferable static conductive performance
The micro-current that grain is produced, is greatly reduced contact resistance, and can improve adhesive ability between the two, can reduce the use of binding agent
Amount, and then it is obviously improved the overall performance generation of battery.The Related product on carbon-coated aluminum foils is gradually developing in the industry
Innovation, such as ShanDong JingGong Electronic Science Co., Ltd discloses a kind of improved-type ferric phosphate lithium cell of circulation and its preparation side
Method (application number：CN104577012A), using carbon paper tinsel is applied, the contact between positive and negative pole material and collector can be greatly lowered
Internal resistance, improves adhesion between the two, effectively improves the multiplying power discharging property of material.Northern science and engineering Deng Longzheng et al. is for applying
The performance of carbon aluminium foil is analyzed, find with using normal aluminium foil compared with collector, can be with by using carbon-coated aluminum foils
So that the internal resistance reduction by 65% or so of battery, capacity is improved under about 15% or so, 10C discharge-rates, and platform increase by 0.3~
0.4V, it is also higher using the normal temperature self-discharge rate of carbon-coated aluminum foils battery core, capacity restoration rate, but in terms of battery cryogenic property, make
Improvement is had no to cryogenic property with carbon-coated aluminum foils.
For the shortcoming of carbon-coated aluminum foils, such as electric conductivity is not good enough, the strength of materials is not high enough and low temperature under carbon-coated aluminum foils
The problems such as performance is unstable or performance indications are not improved, coating material new in recent years arises, with two-dimentional brilliant
The graphene of object constructional features, because turning into and grinding with many merits such as good electric conductivity, low-resistivity, high intensity and toughness
The focus and focus studied carefully.With the progressively breakthrough of the problems such as mass production and large scale, the commercial application of graphene is walked
Cut down and accelerate, based on existing achievement in research, the field that commercial applications are realized at first may be mobile device, aviation boat
My god, new energy field of batteries.
In recent years, the researcher of Univ California-Los Angeles USA just develops a kind of miniature based on graphene
Ultracapacitor, the capacitor not only low-profile, and charging rate is 1000 times of common batteries, can be within the several seconds
Mobile phone even automobile charging, while the device available for manufacture small volume.Miniature graphene super capacitor technology is broken through can be with
Say it is to bring revolutionary development to battery.The method of current main manufacture button capacitor is lithographic printing, it is necessary to throw
Enter substantial amounts of manpower and cost, hinder the business application of product.
Current carbon-coated aluminum foils generally use traditional coating processes and grid cladding process, how by graphene with the shape of coating
Formula is combined and made the focus and technical barrier that there is composite excellent performance to be also modern research then with matrix phase, although beautiful
The graphene capacitor of the exploitations such as state has had blank, but from industrialization also farther out, and do not elaborate specifically or open graphene
The correlation technique of coating.
The content of the invention
Carbon-coated aluminum foils device and method is prepared the invention provides a kind of electrostatic Laser Desorption graphene technology, by graphene
It is well mixed with carbon dust, using the completion of Laser Desorption technology and the combination of foil substrate, completion is precisely controlled by computer and applied
The process of manufacture of carbon aluminium foil, so as to obtain the carbon-coated aluminum foils material that well conducting, strength and toughness are good, capacity is big.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of electrostatic Laser Desorption graphene technology prepares carbon-coated aluminum foils device, including conveyer, cleaning and drying device,
Detection unit, laser cell, coating unit, computer, body；Cleaning and drying dress is sequentially provided with the transmission direction of conveyer
Put, detection unit, laser cell, coating unit, cleaning and drying device, detection unit, laser cell, coating unit are installed on machine
On body, computer is by cable connection and controls conveyer, cleaning and drying device, detection unit, laser cell, coating single
Member.
The cleaning and drying device includes automatic aluminium foil brush, cleaning device, drying suction mist device；The cleaning device is installed
In on the power transmission shaft of conveyer, cleaning device is provided with spray equipment, and spray equipment is located at automatic aluminium foil brush rear portion；It is described automatic
Aluminium foil brush is connected by cable with computer, computer according to aluminium foil surface adhere to greasy dirt, impurity number, regulating roller brush holder with
The distance of aluminium foil, regulation brushing dynamics and brushing-stroke velocity.
The detection unit is provided with charging detector, and charging detector is provided with prism, prism by cable and computer and
Laser cell is connected.The laser cell is provided with laser scanner, and laser scanner is connected by cable with computer.It is described to apply
Cover unit and be sequentially provided with light-sensitive roller, storage roller drum, charging roller, fixing roller from left to right；Storage roller drum is provided with carbon dust chamber and carbon dust
Pipe, graphene is positioned over carbon dust intracavitary with carbon dust, and carbon dust is uniformly sprayed by the carbon dust pipe of carbon dust chamber bottom.
A kind of method that electrostatic Laser Desorption graphene technology prepares carbon-coated aluminum foils, specifically includes following steps：
(1) pretreatment of graphene and carbon dust：With granularity 20-~50nm graphene powder and granularity 1-2um carbon dust
It is used as raw material；Graphene powder and carbon dust are respectively put into vacuum soaking pit to be heated, vacuum soaking pit is up and down
And it is middle with 8~12 thermocouples, 0.8~1.2kPa of vacuum is warming up to 50-80 DEG C, guarantor with 1-2 DEG C/min heating rate
5~10h of temperature.
(2) loading is handled：By graphene and carbon dust according to (0.8~1.2)：The mass ratio of (3.5~4.3) loads volume
In 500~800ml blending tank and vacuumize, vacuum is 1~2MPa；Batch mixer is opened, the vibration frequency of batch mixer is 300
~500Hz, rotating speed is 1800-2500r/min, and mixing time is 10-20min, keeps mixing tank temperature≤80~100 DEG C；It is mixed
Mixed-powder is fitted into the storage roller drum for scribbling metallic selenium by material after terminating by automatic stuffing apparatus, is filled while storage roller is roused
It is loaded on coating unit and prepares coating.
(3) processing and detection of foil substrate：Wide 800~the 1200cm of light paper tinsel, 10~100um of thickness, aluminum foil coil are positioned over aluminium
In paper tinsel winding up roller groove；First by uncoiler by aluminum foil coil uncoiling, uncoiling speed is 10~15m/min, is filled after uncoiling by being driven
Put and be sent to cleaning and drying device；Carbon-coated aluminum foils are treated by automatic aluminium foil brush to be cleared up, roller brush holder is highly 0.1 away from light paper tinsel
~1.5cm, hairbrush is 0.01~1.0cm apart from the distance of light paper tinsel,；Cleaning treatment is carried out to aluminium foil surface by cleaning device,
Ejecting liquid is ethanol, deionized water, the aqueous rinsing liquid of surfactant composition, and spray flow is 70-200ml/min；Spray
Aluminium foil after pouring is delivered to drying by conveying device and inhales mist device, and drying temperature is 50~120 DEG C, blows afloat flow velocity for 1~2l/
min；Foil substrate after processing is delivered to by coating unit by conveying device；
(4) Laser Desorption is sprayed：The temperature for keeping all kinds of rollers of coating unit is 70 DEG C~90 DEG C, the light that will be coated first
Paper tinsel size, form parameter input computer, are aided in completing the modular in design drawing of product, while by after processing by graphics software
Light paper tinsel is put into suction coating porch；By wire electrode to photosensitive drum charging, light-guide material can select cadmium sulfide (CdS), selenium-arsenic
(Se-As) or organic light-guide material (OPC), the discharge time of charging is 5~120s.
The prism of detection unit detects after aluminium foil enters coating entrance signal passing to main frame module, laser
Scanner launches laser beam, and laser beam source is：Helium-neon (He-Ne) gas laser, its wavelength is 632.8nm or gallium arsenic-gallium
Aluminium arsenic (GaAs-GaAlAs) series, the laser beam launched generally near infrared light, wavelength 780nm.
Laser beam, which is irradiated in foil substrate, makes foil substrate surface carry positive charge；Laser beam is reflexed to equipped with stone simultaneously
The carbon dust intracavitary of black alkene and carbon dust, makes equivalent negative electrical charge on toner mixture band, because the charges of different polarity attract each other, carbon dust passes through
Carbon dust chamber bottom carbon dust pipe uniformly sprays, and is coated in foil substrate surface even compact.
Slowly adjust aluminium foil 10~5m/min of charging rate by computer, and collocation 15%-30% nano-carbon powder
The use of graphite mixture, can control aluminium foil surface carbon dust thinner thickness, while can ensure that carbon powder particle in aluminium foil surface thickness
It is evenly distributed consistent, aluminium foil is tightly combined with carbon dust, and then carbon-coated aluminum foils electric conductivity is significantly increased.
(5) post processing and performance indications requirement：Aluminium foil after coating is put into normal temperature soaking pit, with 3~5 DEG C/min's
Heating rate is warming up to 150~200 DEG C, is incubated 1~2h；The graphene and carbon dust coating layer thickness of coating are 20~30nm, thick poor
0.2~0.4%, flatness is 15~20 μm.
Compared with prior art, the beneficial effects of the invention are as follows：
1) device of the present invention is automation equipment, automatically completes the production of carbon-coated aluminum foils, substantially increases production
Efficiency, reduces processing cost；
2) pretreatment stage uses automatic aluminium foil brush before carbon is applied, according to aluminium foil surface state, adjust brush dynamics and
Speed, removes the greasy dirt impurity of aluminium foil surface, and then improves aluminium foil surface quality, improves coating character；
3) when aluminium foil enters coating unit, there is provided charging detector, is detected after aluminium foil entrance, rapidly by signal
Laser cell is passed to, promotes laser cell to launch laser beam, whole process time-consuming is short, and then improves production efficiency；
4) present invention is used as coating raw material using a certain proportion of nano-carbon powder particle with graphite mixture, it is ensured that apply carbon
The uniformity and compactness of aluminium foil surface carbon dust distribution, and enhance adsorptivity of the carbon dust in aluminium foil surface afterwards；
5) present invention uses nano-carbon powder chamber, and cavity bottom is made up of several micron-sized carbon dust pipes, it is ensured that carbon dust is from chamber
Body bottom even flows out, and makes aluminium foil surface carbon dust thickness uniformity, while enhancing the electric conductivity of aluminium foil.
Brief description of the drawings
Fig. 1 is the structural representation of device of the present invention；
Fig. 2 is the process chart of the method for the invention.
In figure：1- conveyer 2- cleaning and drying device 3- detection unit 4- laser cell 5- coating units 6- is counted
Mist device 11- spray equipment 12- prisms 13- chargings are inhaled in the automatic aluminium foil brush 9- cleaning devices 10- drying of calculation machine 7- bodies 8-
Detector 14- laser scanner 15- light-sensitive roller 16- storage rollers drum 17- charging roller 18- fixing roller 19- carbon dust chambers 20-
Carbon dust pipe
Embodiment
The embodiment to the present invention is described further below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of electrostatic Laser Desorption graphene technology prepares carbon-coated aluminum foils device, including it is conveyer 1, clear
Clean drying unit 2, detection unit 3, laser cell 4, coating unit 5, computer 6, body 7.In the transmission direction of conveyer 1
Be sequentially provided with cleaning and drying device 2, detection unit 3, laser cell 4, coating unit 5, cleaning and drying device 2, detection unit 3,
Laser cell 4, coating unit 5 are installed on body.Computer 6 is by cable connection and controls conveyer 1, cleaning and drying to fill
Put 2, detection unit 3, laser cell 4, coating unit 5.
Aluminum foil coil is positioned in rolls of aluminum foil winding up roller groove, first by uncoiler by aluminum foil coil uncoiling, and uncoiling speed is 10~
15m/min, cleaning and drying device 2, detection unit 3, laser cell 4, painting are sequentially delivered to after aluminium foil uncoiling by transmission device 1
Cover unit 5.
Cleaning and drying device 2 includes automatic aluminium foil brush 8, cleaning device 9, drying suction mist device 10.Cleaning device 9 is installed on
On the power transmission shaft of conveyer 1, cleaning device 9 is provided with spray equipment 11, and spray equipment 11 is located at the automatic rear portion of aluminium foil brush 8.From
Dynamic aluminium foil brush 8 is connected by cable with computer 6, computer 6 according to aluminium foil surface attachment greasy dirt, impurity number, regulating roller
The distance of brush holder and aluminium foil, regulation brushing dynamics and brushing-stroke velocity.
Detection unit 3 is provided with prism 12 provided with charging detector 13, charging detector 13, and prism 12 is by cable with calculating
Machine 6 and laser cell 4 are connected.Laser cell 4 is provided with laser scanner 14, and laser scanner 14 passes through cable and the phase of computer 6
Even.Coating unit 5 is sequentially provided with light-sensitive roller 15, storage roller drum 16, charging roller 17, fixing roller 18 from left to right.Storage roller drum 16
Provided with carbon dust chamber 19 and carbon dust pipe 20, graphene is positioned in carbon dust chamber 19 with carbon dust, the carbon that carbon dust passes through the bottom of carbon dust chamber 19
Tube cell 20 uniformly sprays.
As shown in Fig. 2 a kind of method that electrostatic Laser Desorption graphene technology prepares carbon-coated aluminum foils, specifically includes following step
Suddenly：
(1) pretreatment of graphene and carbon dust：With granularity 20-~50nm graphene powder and granularity 1-2um carbon dust
It is used as raw material；Graphene powder and carbon dust are respectively put into vacuum soaking pit to be heated, vacuum soaking pit is up and down
And it is middle with 8~12 thermocouples, 0.8~1.2kPa of vacuum is warming up to 50-80 DEG C, guarantor with 1-2 DEG C/min heating rate
5~10h of temperature.
(2) loading is handled：By graphene and carbon dust according to (0.8~1.2)：The mass ratio of (3.5~4.3) loads volume
In 500~800ml blending tank and vacuumize, vacuum is 1~2MPa；Batch mixer is opened, the vibration frequency of batch mixer is 300
~500Hz, rotating speed is 1800-2500r/min, and mixing time is 10-20min, keeps mixing tank temperature≤80~100 DEG C；It is mixed
Mixed-powder is fitted into the storage roller drum 16 for scribbling metallic selenium by material after terminating by automatic stuffing apparatus, while storage roller is roused
16 are loaded in preparation coating on coating unit 5.
(3) processing and detection of foil substrate：Wide 800~the 1200cm of light paper tinsel, 10~100um of thickness；Aluminum foil coil is positioned over aluminium
In paper tinsel winding up roller groove, first by uncoiler by aluminum foil coil uncoiling, uncoiling speed is 10-15m/min, by passing after aluminum foil coil uncoiling
Dynamic device 1 is sent to cleaning and drying device 2.
First pass through automatic aluminium foil brush 8 and treat carbon-coated aluminum foils and cleared up, roller brush is woolens body, is adhered to according to aluminium foil surface
Greasy dirt, impurity number, height of the regulating roller brush away from light paper tinsel between 0.1~1.5cm, hairbrush apart from light paper tinsel distance be 0.01
Between~1.0cm.According to aluminium foil surface state, the dynamics and speed of brush are adjusted, the greasy dirt impurity of aluminium foil surface is removed, and then
Aluminium foil surface quality is improved, coating character is improved.
Cleaning treatment is carried out to aluminium foil surface by the cleaning device 9 on power transmission shaft, spray equipment 11 is located at roller brush rear portion,
Ejecting liquid be ethanol, deionized water, surfactant composition aqueous rinsing liquid, spray flow 70-200ml/min it
Between；Aluminium foil after spray is delivered to drying by conveying device 1 and inhales mist device 10, and drying temperature is 50~120 DEG C, and blowing afloat flow velocity is
1~2l/min；Foil substrate after processing is delivered to by coating unit 5 by conveying device 1；
(4) Laser Desorption is sprayed：The temperature for keeping all kinds of rollers of coating unit 5 is 70 DEG C~90 DEG C, will be coated first
Light paper tinsel size, form parameter input computer 6, are aided in completing the modular in design drawing of product by graphics software, while will processing
Light paper tinsel afterwards is put into suction coating porch；Photosensitive drums 15 are charged by wire electrode, light-guide material can select cadmium sulfide (CdS),
Selenium-arsenic (Se-As) or organic light-guide material (OPC), the discharge time of charging is 5~120s.
Detection unit 3 detects after foil substrate enters coating entrance signal passing to the host module of computer 6, laser
Scanner 14 launches laser beam, and laser beam source is：Helium-neon (He-Ne) gas laser, its wavelength be 632.8nm or gallium arsenic-
Gallium aluminum arsenide (GaAs-GaAlAs) series, the laser beam launched generally near infrared light, wavelength 780nm.
Laser beam, which is irradiated on aluminium foil, makes aluminium foil surface carry positive charge；Laser beam is reflexed to equipped with graphene and carbon simultaneously
In the carbon dust chamber 19 of powder, make equivalent negative electrical charge on toner mixture band, because the charges of different polarity attract each other, carbon dust passes through carbon dust chamber
19 bottom carbon dust pipes 20 uniformly spray, and are coated in aluminium foil surface even compact.
Pass through the slow regulation aluminium foil charging rate 10-15m/min of computer 6, and collocation 15%-30% nano-carbon powder
The use of graphite mixture, can control aluminium foil surface carbon dust thinner thickness, while can ensure that carbon powder particle in aluminium foil surface thickness
It is evenly distributed consistent, aluminium foil is tightly combined with carbon dust, and then carbon-coated aluminum foils electric conductivity is significantly increased.
(5) post processing and performance indications requirement：Aluminium foil after coating is put into normal temperature soaking pit, with 3~5 DEG C/min's
Heating rate is warming up to 150~200 DEG C, is incubated 1~2h；The graphene and carbon dust coating layer thickness of coating are 20~30nm, thick poor
0.2~0.4%, flatness is 15-20 μm.
Embodiment 1：
Matrix is high-purity aluminum foil, and aluminium foil specification is：Length 400cm, width is 800cm, and thickness is 10 microns.Using electrostatic
Laser Desorption graphene technology prepares carbon-coated aluminum foils, and its step is as follows：
(1) pretreatment of graphene and carbon dust：
Graphene is processed into the powder that granularity is 20nm, 1um graphite carbon dust is chosen as raw material, by Graphene powder
End and carbon dust are respectively put into vacuum soaking pit and heated, and vacuum soaking pit is up and down and the thermocouple 8 matched somebody with somebody of centre
Individual, vacuum 0.8KPa is warming up to 50 DEG C, insulation 5h is standby with 1 DEG C/min heating rate.
(2) loading is handled：
Batch mixing tank volume is in 500mL, by graphene and carbon dust according to 0.8:3.5 mass ratio is fitted into tank and vacuumized,
Vacuum is in 1MPa.Batch mixer is opened, the vibration frequency of batch mixer is 300 hertz, and batch mixer rotating speed is 1800 revs/min, is mixed
The material time is 10min, keeps mixing tank temperature to be not higher than 80 DEG C, batch mixing is filled mixed-powder using automatic stuffing apparatus after terminating
In the storage roller drum 16 for entering to scribble metallic selenium, prepare to coat while storage roller drum is loaded on coating unit 5.
(3) processing and detection of foil substrate
The dimensions length of light paper tinsel is not limited, and width is 800cm, and light paper tinsel thickness is 10um.Aluminum foil coil is located in aluminium foil winding up roller groove,
First by uncoiler by aluminium foil transmission feeding main equipment, the uncoiling speed of uncoiler is 10m/min, after uncoiling by
Transmission device 6 is sent to cleaning and drying device 2, treats carbon-coated aluminum foils first with automatic aluminium foil brush 8 and is cleared up, according to aluminium foil table
Face actual conditions, adjust aluminium foil brush condition of work, and roller brush is woolens body, and round brush handle is away from aluminium foil height in 0.1cm, and hairbrush is apart from aluminium
The distance of paper tinsel is 0.01cm, carries out cleaning treatment to aluminium foil surface by the cleaning device 9 on power transmission shaft, spray equipment 11 is located at
Near round brush, ejecting liquid is the aqueous rinsing liquid of the common agents such as ethanol, deionized water, surfactant composition, spray stream
Measure as 70mL/min, entering drying under the drive of the conveyer belt of transmission device 6 by the aluminium foil of spray inhales mist device 10, drying temperature
Spend for 50 DEG C, blow afloat flow velocity for 1L/min, the foil substrate after early stage is handled is sent to by painting carbon list by conveyer 1
Member 5.
(4) Laser Desorption is sprayed
The power supply of spraying equipment is opened, the temperature of all kinds of rollers is kept in 70 DEG C, the production that will be coated on computer 6 first
The parameters such as product size, shape are inputted, and the dimensions length of light paper tinsel is not limited, and width is 800cm, and light paper tinsel thickness is 10um, is calculated by CAD
Machine auxiliary completes the modular in design drawing of product, while ready smooth paper tinsel is put into suction coating porch.Pass through wire electrode pair
Photosensitive drums 15 (light-guide material with cadmium sulfide (CdS)) are charged, and the discharge time of charging is that prism 12 is examined between 5-120 seconds
Signal is passed into the host module of computer 6, the laser beam launched by laser scanner 14 while measuring the entrance of aluminium foil
(light source is：Helium-neon (He-Ne) gas laser, its wavelength is 632.8nm) it is irradiated on aluminium foil, promote on aluminium foil surface band
A certain amount of positive charge, meanwhile, laser beam is reflexed in the carbon dust chamber 19 equipped with graphene and carbon dust, is made on toner mixture band
Equivalent negative electrical charge, because the charges of different polarity attract each other, carbon dust is uniformly sprayed by the bottom carbon dust pipe 20 of carbon dust chamber 19, even compact
Ground is distributed on aluminium foil surface.
(5) post processing and performance indications requirement
It is put into normal temperature soaking pit and handles after the completion of coating, is warming up to 150 DEG C with 3 DEG C/min heating rate, insulation 1 is small
When；20 nanometers of the graphene and carbon dust coating layer thickness of coating, thickness poor 0.2%, flatness is 15 μm.
Embodiment 2：
Matrix is high-purity aluminum foil, and aluminium foil specification is：Length 1000cm, width is 1200cm, and thickness is 100 microns.Using
Electrostatic Laser Desorption graphene technology prepares carbon-coated aluminum foils, and its step is as follows：
(1) pretreatment of graphene and carbon dust
Graphene is processed into the powder that granularity is 50nm, the graphite carbon dust of 2 microns of selection is as raw material, by graphene
Powder and carbon dust are respectively put into vacuum soaking pit and heated, and vacuum soaking pit is up and down and the middle thermocouple matched somebody with somebody
12, vacuum 1.2kPa is warming up to 80 DEG C, insulation 10h is standby with 2 DEG C/min heating rate.
(2) loading is handled
Batch mixing tank volume is in 800mL, by graphene and carbon dust according to 1.2:4.3 mass ratio is fitted into tank and vacuumized,
Vacuum is in 2MPa.Batch mixer is opened, the vibration frequency of batch mixer is 500 hertz, and batch mixer rotating speed is 2500 revs/min, is mixed
The material time is 20min, keeps mixing tank temperature to be not higher than 100 DEG C, batch mixing uses automatic stuffing apparatus by mixed-powder after terminating
It is fitted into the storage roller drum for scribbling metallic selenium, prepares to coat while storage roller drum 16 is loaded on coating unit 5.
(3) processing and detection of foil substrate
The dimensions length of light paper tinsel is not limited, and width is adjustment within the scope of 1200cm, and light paper tinsel thickness is 100um.Aluminum foil coil position
In aluminium foil winding up roller groove, first by uncoiler by aluminium foil transmission feeding main equipment, the uncoiling speed of uncoiler is
15m/min, makes light paper tinsel enter cleaning and drying device 2, first with automatic aluminium foil brush 8 to carbon to be coated after uncoiling by transmission device 6
Aluminium foil is cleared up, according to aluminium foil surface actual conditions, adjusts aluminium foil brush condition of work, and roller brush is woolens body, and round brush handle is away from aluminium
Paper tinsel height is 1.0cm apart from the distance of aluminium foil in 1.5cm, hairbrush, and aluminium foil surface is carried out by the cleaning device 9 on power transmission shaft
Cleaning treatment, spray equipment 11 is located near round brush, and ejecting liquid is the common agents such as ethanol, deionized water, surfactant
The aqueous rinsing liquid of composition, spray flow is 200mL/min, by the aluminium foil of spray under the drive of the conveyer belt of transmission device 1
Mist device 10 is inhaled into drying, drying temperature is 120 DEG C, flow velocity is blown afloat between 2L/min, before passing through by conveyer 1
Foil substrate after phase processing is sent to painting carbon unit 5.
(4) Laser Desorption is sprayed
The power supply for applying carbon unit 5 is opened, the temperature of all kinds of rollers is kept in 90 DEG C, the production that will be coated on computers first
The parameters such as product size, shape are inputted, and the dimensions length of light paper tinsel is not limited, and width is 1200cm, and light paper tinsel thickness is 100 microns, by CAD
Area of computer aided completes the modular in design drawing of product, while ready smooth paper tinsel is put into suction coating porch.Pass through electrode
Silk charges to photosensitive drums (light-guide material with selenium-arsenic (Se-As)), and the discharge time of charging is 120 seconds, and prism is detected
Signal is passed into host module while the entrance of aluminium foil, by laser beam (the gallium arsenic-gallium aluminum arsenide (GaAs- for swashing scanner transmitting
GaAlAs it is) serial, the laser beam wavelength launched generally near infrared light, 780 nanometers of wavelength) it is irradiated on aluminium foil, promote
A certain amount of positive charge on aluminium foil surface band, meanwhile, laser beam reflexes to the carbon dust intracavitary equipped with graphene and carbon dust, makes carbon dust
Equivalent negative electrical charge on mixture band, because the charges of different polarity attract each other, carbon dust is uniformly sprayed by carbon dust chamber bottom carbon dust pipe,
It is even to be densely distributed on aluminium foil surface.
(5) post processing and performance indications requirement
It is put into normal temperature soaking pit and handles after the completion of coating, is warming up to 200 DEG C with 5 DEG C/min heating rate, insulation 2 is small
When；30 nanometers of the graphene and carbon dust coating layer thickness of coating, thickness poor 0.4%, flatness is 20 μm.
Device of the present invention is automation equipment, automatically completes the production of carbon-coated aluminum foils, substantially increases production effect
Rate, reduces processing cost.Pretreatment stage uses automatic aluminium foil brush 8 before carbon is applied, according to aluminium foil surface state, adjusts brush
Dynamics and speed, remove aluminium foil surface greasy dirt impurity, and then improve aluminium foil surface quality, improve coating character.In aluminium foil
During into coating unit 5, there is provided charging detector 13, detects after aluminium foil entrance, signal rapidly is passed into laser list
Member 4, promotes laser cell 4 to launch laser beam, whole process time-consuming is short, and then improves production efficiency.The present invention uses one
The nano-carbon powder particle of certainty ratio is used as coating raw material with graphite mixture, it is ensured that the distribution of aluminium foil surface carbon dust is equal after painting carbon
Even property and compactness, and enhance adsorptivity of the carbon dust in aluminium foil surface.The present invention using nano-carbon powder chamber 19, cavity bottom by
Several micron-sized carbon dust pipes 20 are constituted, it is ensured that carbon dust uniformly flows out from cavity bottom, make aluminium foil surface carbon dust thickness uniform one
Cause, while enhancing the electric conductivity of aluminium foil.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (7)
1. a kind of electrostatic Laser Desorption graphene technology prepares carbon-coated aluminum foils device, it is characterised in that including conveyer, cleaning
Drying unit, detection unit, laser cell, coating unit, computer, body；It is sequentially provided with the transmission direction of conveyer
Cleaning and drying device, detection unit, laser cell, coating unit, cleaning and drying device, detection unit, laser cell, coating are single
Member is installed on body；Computer is by cable connection and controls conveyer, cleaning and drying device, detection unit, laser list
Member, coating unit.
2. a kind of electrostatic Laser Desorption graphene technology according to claim 1 prepares carbon-coated aluminum foils device, its feature exists
In the cleaning and drying device includes automatic aluminium foil brush, cleaning device, drying suction mist device；The cleaning device is installed on biography
Send on the power transmission shaft of device, cleaning device is provided with spray equipment, spray equipment is located at automatic aluminium foil brush rear portion；The automatic aluminium foil
Brush is connected by cable with computer, computer according to aluminium foil surface attachment greasy dirt, impurity number, regulating roller brush holder and aluminium foil
Distance, regulation brushing dynamics and brushing-stroke velocity.
3. a kind of electrostatic Laser Desorption graphene technology according to claim 1 prepares carbon-coated aluminum foils device, its feature exists
In the detection unit is provided with prism provided with charging detector, charging detector, and prism passes through cable and computer and laser list
Member is connected.
4. a kind of electrostatic Laser Desorption graphene technology according to claim 1 prepares carbon-coated aluminum foils device, its feature exists
In the laser cell is provided with laser scanner, and laser scanner is connected by cable with computer.
5. a kind of electrostatic Laser Desorption graphene technology according to claim 1 prepares carbon-coated aluminum foils device, its feature exists
In the coating unit is sequentially provided with light-sensitive roller, storage roller drum, charging roller, fixing roller from left to right；Storage roller drum is provided with carbon dust
Chamber and carbon dust pipe, graphene are positioned over carbon dust intracavitary with carbon dust, and carbon dust is uniformly sprayed by the carbon dust pipe of carbon dust chamber bottom.
6. a kind of method that electrostatic Laser Desorption graphene technology based on claim 1 described device prepares carbon-coated aluminum foils, will
Graphene is uniformly mixed with carbon dust, using the completion of Laser Desorption technology and the combination of aluminum substrate, so as to obtain well conducting, intensity
The painting carbon graphite alkene material of good toughness, capacity greatly, it is characterised in that specifically include following steps：
(1) pretreatment of graphene and carbon dust：Using 20~50nm of granularity graphene powder and 1~2um of granularity carbon dust as
Raw material；Graphene powder and carbon dust are respectively put into vacuum soaking pit to be heated, vacuum soaking pit up and down and in
Between 50~80 DEG C, insulation are warming up to 1~2 DEG C/min heating rate with 8~12 thermocouples, 0.8~1.2kPa of vacuum
5~10h；
(2) loading is handled：By graphene and carbon dust according to (0.8~1.2)：It is 500 that the mass ratio of (3.5~4.3), which loads volume,
In~800ml blending tank and vacuumize, vacuum is 1~2MPa；Open batch mixer, the vibration frequency of batch mixer for 300~
500Hz, rotating speed is 1800~2500r/min, and mixing time is 10~20min, keeps mixing tank temperature≤80~100 DEG C；It is mixed
Mixed-powder is fitted into the storage roller drum for scribbling metallic selenium by material after terminating by automatic stuffing apparatus, is filled while storage roller is roused
It is loaded on coating unit and prepares coating；
(3) processing and detection of foil substrate：Wide 800~the 1200cm of light paper tinsel, 10~100um of thickness, aluminum foil coil are positioned over aluminum foil coil
In roller groove；First by uncoiler by aluminum foil coil uncoiling, uncoiling speed is 10~15m/min, is passed after uncoiling by transmission device
Deliver to cleaning and drying device；By automatic aluminium foil brush carbon-coated aluminum foils are treated to be cleared up, roller brush holder away from light paper tinsel highly for 0.1~
1.5cm, hairbrush is 0.01~1.0cm apart from the distance of light paper tinsel,；Cleaning treatment, spray are carried out to aluminium foil surface by cleaning device
Pouring liquid is ethanol, deionized water, the aqueous rinsing liquid of surfactant composition, and spray flow is 70-200ml/min；Spray
Aluminium foil afterwards is delivered to drying by conveying device and inhales mist device, and drying temperature is 50~120 DEG C, blows afloat flow velocity for 1~2l/min；
Foil substrate after processing is delivered to by coating unit by conveying device；
(4) Laser Desorption is sprayed：The temperature for keeping all kinds of rollers of coating unit is 70 DEG C~90 DEG C, the light paper tinsel chi that will be coated first
Very little, form parameter input computer, is aided in completing the modular in design drawing of product by graphics software, while by the light paper tinsel after processing
It is put into suction coating porch；By wire electrode to photosensitive drum charging, the discharge time of charging is 5~120s；Detection unit is detected
Signal is passed into main frame module after to aluminium foil into coating entrance, laser scanner transmitting laser beam, laser beam shines
Being mapped on aluminium foil makes aluminium foil surface carry a certain amount of positive charge；Laser beam reflexes to the carbon dust equipped with graphene and carbon dust simultaneously
Intracavitary, makes equivalent negative electrical charge on toner mixture band, because the charges of different polarity attract each other, and carbon dust passes through carbon dust chamber bottom carbon dust pipe
It is uniform to spray, it is coated in aluminium foil surface even compact；
(5) post processing and performance indications requirement：Aluminium foil after coating is put into normal temperature soaking pit, with 3~5 DEG C/min heating
Speed is warming up to 150~200 DEG C, is incubated 1~2h；The graphene and carbon dust coating layer thickness of coating are 20~30nm, thick by poor 0.2~
0.4%, flatness is 15~20 μm.
7. the method that a kind of electrostatic Laser Desorption graphene technology according to claim 6 prepares carbon-coated aluminum foils, its feature
It is, the light-guide material of step (4) described photosensitive drums can select cadmium sulfide (CdS), selenium-arsenic (Se-As) or organic light-guide material
(OPC)；The laser beam source is：Helium-neon (He-Ne) gas laser, its wavelength is 632.8nm or gallium arsenic-gallium aluminum arsenide
(GaAs-GaAlAs) it is serial, the laser beam launched generally near infrared light, wavelength 780nm.
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