CN107603225A - The graphene anti-corrosion film and preparation method of a kind of Pasting - Google Patents

The graphene anti-corrosion film and preparation method of a kind of Pasting Download PDF

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CN107603225A
CN107603225A CN201711027221.8A CN201711027221A CN107603225A CN 107603225 A CN107603225 A CN 107603225A CN 201711027221 A CN201711027221 A CN 201711027221A CN 107603225 A CN107603225 A CN 107603225A
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graphene
film
preparation
pasting
corrosion
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CN107603225B (en
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陈庆
昝航
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Quanzhou Jiadeli Electronic Material Co., Ltd.
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Chengdu New Keli Chemical Science Co Ltd
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Abstract

The invention belongs to the technical field of anti-corrosion film preparation, there is provided the graphene anti-corrosion film and preparation method of a kind of Pasting.This method is first using graphite powder as raw material, in N, ultrasound peels off the dispersion liquid that graphene is made in N dimethylformamides, then mixed with self-crosslinking organic silicon emulsion, dispersant and stabilizer, spray-dried obtained composite particles, again through rolling film forming and sided corona treatment, the graphene anti-corrosion film of Pasting is obtained.Compared with conventional method, the graphene anti-corrosion film of the invention prepared, tack is good, has tight anticorrosion, waterproof, gas-tight and other effects, while whole dixie cup process is simple, and easily operation, cost is relatively low, easy for construction, achievable industrialized production.

Description

The graphene anti-corrosion film and preparation method of a kind of Pasting
Technical field
The invention belongs to the technical field of anti-corrosion film preparation, there is provided the graphene anti-corrosion film and system of a kind of Pasting Preparation Method.
Background technology
The two-dimentional carbon material for only one layer of atomic thickness that graphene is made up of carbon atom.2004, Britain Man Chesi Graphene is isolated in especially big physicist An Deliegaimu and the success of Constantine Nuo Woxiao loves from graphite, it was demonstrated that it Can be with individualism, therefore two people also obtain Nobel Prize in physics in 2010 jointly.As the most thin, intensity having now been found that most Greatly, a kind of most strong novel nano-material of electrical and thermal conductivity --- graphene is referred to as " dark fund ", is " king of new material ".Science Family even foretells that graphene will start the subversiveness have swept the globe new technology, a new industrial revolution.
Emerging strategic material of the graphene as forefront, receives the concern of global scientist, and more states are all fighting for The leading position of graphene research and development.Graphene has high-specific surface area, Quick conductive, excellent chemical stability, prominent simultaneously The performances such as the mechanical property that goes out, high-termal conductivity, application is extremely extensive, from supercomputer to ultracapacitor, to compound Material, to paint field, graphene all fully develops talents, and applies most fast possibility just in paint field, is applied including conduction Material, anticorrosive paint, anti-flaming dope, heat-conductive coating and high intensity coating etc..
Graphene is used to that in coating pure graphene coating and graphene composite coating can be prepared, and the former is primarily referred to as pure graphite Alkene plays the functional coating of the effects such as anticorrosion, conduction in metal surface;The latter be primarily referred to as graphene first with polymer Resin compounded, functional coating is then prepared with composite, graphene can be obviously improved the performance of resin, therefore graphene is answered Closing coating turns into the important application research field of graphene.Current universal technique prepares the stone that graphene anticorrosive paint is solid phase Black alkene powder mixes with coating, and graphene substantially has 3 kinds with coating polymer resin compounded method:Melt blending, solution are common Mixed, in-situ polymerization.Although graphene has excellent anti-corrosion barrier property, current graphene is in anticorrosive paint using presence Be difficult to the defects of scattered, and graphene layer easily again overlapping aggregation the defects of.In recent years, prepared by domestic and international researcher Go out graphene film and solve stone in the expansion research of metal erosion protection field, the graphene film of such Pasting to it While black alkene reunion sex chromosome mosaicism, also there is the advantageous characteristic in terms of anti-oxidant, resistant to liquid burn into antibiont corrosion.
Certain effect is achieved in terms of graphene anticorrosive paint, especially graphene anti-corrosion film both at home and abroad at present. Its intermediate range is extensively expensive et al. to have invented a kind of method that graphene/silicon alkane laminated film is prepared in metal surface(Chinese invention patent Application number 201310533443.2), the shortcomings that the method overcomes graphene film and metal bond strength weak, introduce and contain two kinds The silane coupler of different chemical functional groups produces a kind of composite membrane, but the preparation process of this method is answered as transition film layer Miscellaneous and cost is high, while graphene has agglomeration traits.In addition, Zhao Chongjun et al. has invented a kind of graphene of anti-corrosion/lead The preparation method of electric polypyrrole composite film(Chinese invention patent application number 201610252725.9), the method is single using pyrroles The volatility feature of body, allows the pyrrole monomer of vapor phase to be in contact with graphene oxide solution, so as to occur on two-phase interface Redox reaction, pyrrole monomer is oxidative polymerization into polypyrrole, while graphene oxide is reduced to graphene, finally in gas Liquid interface generates graphene/electric polypyrrole laminated film, but this method equally exists that cost is higher, preparation process is complicated asks Topic, while still there is the problem of scattered uneven in graphene, be unfavorable for promoting.
It is difficult to the defects of scattered, and graphite it can be seen that graphene in the prior art be present and apply to exist in anticorrosive paint The layer of alkene easily again overlapping aggregation the defects of, while general graphene film fitting is not close, and preparation process is complicated and cost The problem of high.
The content of the invention
It is an object of the invention to provide the graphene anti-corrosion film and preparation method of a kind of Pasting, using graphite powder as original Material, ultrasound peels off the dispersion liquid that graphene is made in DMF, then with self-crosslinking organic silicon emulsion, scattered Agent and stabilizer mixing, spray-dried obtained composite particles, then through rolling film forming and sided corona treatment, obtain the graphite of Pasting Alkene anti-corrosion film.Compared with conventional method, the graphene anti-corrosion film of the invention prepared, tack is good, has tight anti-corrosion Erosion, waterproof, gas-tight and other effects, while whole dixie cup process is simple, easily operation, cost is relatively low, easy for construction, and industry can be achieved Metaplasia is produced, and can solve the defects of graphene is applied in the presence of being difficult to disperse in anticorrosive paint in conventional method, and graphene Layer easily again overlapping aggregation the defects of, while solve that the fitting of general graphene film is not close, and preparation process is answered in addition The problem of miscellaneous and cost is high.
Concrete technical scheme of the present invention is as follows:
The preparation method of the graphene anti-corrosion film of a kind of Pasting, first using graphite powder as raw material, in DMF Middle ultrasound peels off the dispersion liquid that graphene is made, and is then mixed with self-crosslinking organic silicon emulsion, dispersant and stabilizer, through spraying Obtained composite particles are dried, then through rolling film forming and sided corona treatment, obtain the graphene anti-corrosion film of Pasting;What is prepared is specific Step is as follows:
(1)The graphite powder of certain mass is added in glass container, adds the DMF of certain mass, mixing After uniformly, vessel port is sealed with preservative film, and container is placed in ice bath, then it is carried out using ultrasonic cell disrupte machine It is ultrasonically treated, the supernatant of mixture is taken after ultrasound, add in centrifuge tube, high speed centrifugation, the supernatant in centrifuge tube is shifted Into clean container, the dispersion liquid of graphene is obtained;
(2)To step(1)A certain amount of self-crosslinking organic silicon emulsion, dispersant and stabilizer are added in the dispersion liquid of gained, by force Power, which is uniformly mixed, is made slurry, is then dried by spray dryer, obtains composite particles;
(3)Suitable calender is selected, roller rolling velocity and temperature are set, by step(2)The particle of gained adds calender Charging aperture, during particle is downtrodden, organosilicon occurs self-crosslinking and forms tridimensional network and film forming, with scattered stone Black alkene mutually cooperatively forms complete covering, plays tight anticorrosion, waterproof, gas-tight and other effects, then carries out electricity to film Dizzy processing, lifts its surface adhesion, obtains the graphene anti-corrosion film of Pasting.
Preferably, step(1)The addition quality of the graphite powder is the 3~5% of DMF quality.
Preferably, step(1)In the whole dispersion process, the temperature of dispersion liquid is no more than 30 DEG C.
Preferably, step(1)The ultrasound treatment patterns are ultrasonic 2s, stop 2s, then ultrasonic 2s, stop 2s, so repeatedly, 15~35min is ultrasonically treated altogether.
Preferably, step(1)The rotating speed of the centrifugal treating is 400~600r/min, and centrifugation time is 10~20min.
Preferably, step(2)The dispersant is barium stearate, zinc stearate, magnesium stearate, copper stearate or stearic acid At least one of calcium;The stabilizer is at least one of pentaerythrite, xylitol or mannitol.
Preferably, step(2)The addition of the self-crosslinking organic silicon emulsion is the 40~60% of dispersion liquid quality;It is described The addition of dispersant is the 4~8% of dispersion liquid quality;The addition of the stabilizer is the 2~4% of dispersion liquid quality.
Preferably, step(2)The rotating speed of the spray dryer is 18000~25000r/min, spray disk a diameter of 50 ~150mm, the dry powder rate of recovery are not less than 95%.
Preferably, step(3)The calender can be two-roll calendar, tri-roll press machine, four-roll calender or five roll-ins Prolong machine.
Preferably, step(3)The draw ratio of the calender is 2~2.5, and rolling velocity is 50~90m/min, roller temperature Spend for 100~140 DEG C.
Preferably, step(3)Film forming thickness after the calendering is 10~30 μm.
Dispersion problem for how to improve graphene, has substantial amounts of scientific research personnel to make a series of grind in this respect Study carefully, its method be concentrated mainly on it is modified to the surface of graphene, introduce foreign molecules, add surfactant, introduce macromolecule And doping aromatic series macromolecular etc., also have in the face using the graphene oxide reduced or the electrostatic of edge oxygen-containing functional group is arranged Reprimand is acted on to weaken piece interlayer Van der Waals force to reach the purpose of stable dispersion.The present invention is using DMF to be molten Agent, the method peeled off using intermittence ultrasound, directly peeled off with graphite powder and graphene is made, then be centrifuged, can obtain Stable graphene dispersing solution.
Spray dryer is a kind of device that can complete to dry and be granulated simultaneously.Feed pump can be adjusted according to technological requirement Pressure, flow, the size of spray orifice, obtain the spheric granules of a certain size required ratio.Spray dryer is that continous way is normal One kind of drier is pressed, using special installation by liquid material atomisation, makes it with hot air and is dried.For drying certain A little thermal sensitivity liquid, suspension or viscous liquids, it can also be used to drying fuel, intermediate, soap powder and inorganic salts etc..The present invention Composite slurry spray drying is turned into composite particles using this principle, in order to roll film forming.
Sided corona treatment is a kind of shock treatment, can make the surface of stock have higher tack.Its principle is to utilize High-frequency high voltage carries out corona discharge on processed stock surface, produces low temperature plasma, produces stock surface For raw radical reaction so as to promote polymer to crosslink, surface is roughening and increases its wetability to polar solvent.Deng from Daughter is by shocking by electricity and penetrating into stock surface breakdown its molecular structure, and then by the molecular oxidation on stock surface and pole Change, plasma electric shock erosion surface, to increase the adhesive ability on stock surface.The present invention is using this principle to anti-corrosion film Surface is handled, and increases its tack, it is directly bonded, is coated with material surfaces such as metals.
Anti-corrosion film produced by the present invention, with other method(Such as it is hot bonding or is not used graphene dispersing solution)Anti-corrosion Film is contrasted, indoor anticorrosive grade, outdoor anti-corrosion grade, and the peel strength with metallic copper, as shown in table 1.It can be seen that: The preparation method of the present invention, the antiseptic property of film, and enhanced film and the adhesive strength of metal base can be effectively improved.
Table 1
Performance indications Peel strength(kN/m) Indoor anticorrosive grade Outdoor anti-corrosion grade
Graphene dispersing solution is not used 3~4 F1 W
It is hot bonding 1~1.5 F2 WF1~WF2
The inventive method 3~4 F2 WF2
The invention provides the graphene anti-corrosion film and preparation method of a kind of Pasting, compared with prior art, what it was protruded Feature and excellent effect are:
1. graphene anti-corrosion film prepared by the present invention, there is tight anticorrosion, waterproof, gas-tight and other effects.
2. graphene anti-corrosion film prepared by the present invention, tack is good, can directly paste, be coated with the material table such as metal Face.
3. the preparation method of the present invention, process is simple, easily operation, and cost is relatively low, and product is easy for construction, and work can be achieved Industry metaplasia is produced.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention Scope be only limitted to following example.In the case where not departing from above method thought of the present invention, according to ordinary skill The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
The graphene anti-corrosion film and preparation method of a kind of Pasting, it is as follows that it prepares the detailed process of anti-corrosion film:
3kg graphite powders are added in glass container, 10kgN is added, dinethylformamide, after being well mixed, uses preservative film Vessel port is sealed, and container is placed in ice bath.Then ultrasonic cell disrupte machine is used in a manner of 2s on, 2s off pair It is ultrasonically treated, and stops ultrasound after 35min.Then the supernatant of mixture is taken, is added in centrifuge tube, and in centrifuge 10min is handled with 600r/min centrifugation.Supernatant in centrifuge tube is transferred in clean container, obtains graphene Dispersion liquid;5.5kg self-crosslinkings organic silicon emulsion, 0.6kg barium stearates and 0.2kg mannitol are added into 10kg dispersion liquids, by force Power, which is uniformly mixed, is made slurry, then by spray dryer, is dried with 18000r/min rotating speed, obtains compound Grain;Select tri-roll press machine, draw ratio 2.5, rolling velocity 50m/min, roller temperature is 140 DEG C, by composite particles plus Entering the charging aperture of calender, during particle is downtrodden, organosilicon occurs self-crosslinking and forms tridimensional network and film forming, with Scattered graphene mutually cooperatively forms complete covering, plays tight anticorrosion, waterproof, gas-tight and other effects.Then to thin Film carries out sided corona treatment, lifts its surface adhesion, obtains the graphene anti-corrosion film of Pasting.
The anti-corrosion film obtained to embodiment 1, its indoor anticorrosive grade and outdoor anti-corrosion grade are tested, as shown in table 2.Will It is pasted with metallic copper, L-type stripping being carried out after 24h, tests its peel strength, as shown in table 2.
Embodiment 2
The graphene anti-corrosion film and preparation method of a kind of Pasting, it is as follows that it prepares the detailed process of anti-corrosion film:
4kg graphite powders are added in glass container, 10kgN is added, dinethylformamide, after being well mixed, uses preservative film Vessel port is sealed, and container is placed in ice bath.Then ultrasonic cell disrupte machine is used in a manner of 2s on, 2s off pair It is ultrasonically treated, and stops ultrasound after 35min.Then the supernatant of mixture is taken, is added in centrifuge tube, and in centrifuge 12min is handled with 500r/min centrifugation.Supernatant in centrifuge tube is transferred in clean container, obtains graphene Dispersion liquid;4.5kg self-crosslinkings organic silicon emulsion, 0.5kg calcium stearates and 0.3kg xylitols are added into 10kg dispersion liquids, by force Power, which is uniformly mixed, is made slurry, then by spray dryer, is dried with 25000r/min rotating speed, obtains compound Grain;Four-roll calender is selected, draw ratio 2, rolling velocity 50m/min, roller temperature is 100 DEG C, and composite particles are added The charging aperture of calender, during particle is downtrodden, organosilicon occurs self-crosslinking and forms tridimensional network and film forming, with point Scattered graphene mutually cooperatively forms complete covering, plays tight anticorrosion, waterproof, gas-tight and other effects.Then to film Sided corona treatment is carried out, its surface adhesion is lifted, obtains the graphene anti-corrosion film of Pasting.
The anti-corrosion film obtained to embodiment 2, its indoor anticorrosive grade and outdoor anti-corrosion grade are tested, as shown in table 2.Will It is pasted with metallic copper, L-type stripping being carried out after 24h, tests its peel strength, as shown in table 2.
Embodiment 3
The graphene anti-corrosion film and preparation method of a kind of Pasting, it is as follows that it prepares the detailed process of anti-corrosion film:
5kg graphite powders are added in glass container, 10kgN is added, dinethylformamide, after being well mixed, uses preservative film Vessel port is sealed, and container is placed in ice bath.Then ultrasonic cell disrupte machine is used in a manner of 2s on, 2s off pair It is ultrasonically treated, and stops ultrasound after 25min.Then the supernatant of mixture is taken, is added in centrifuge tube, and in centrifuge 11min is handled with 440r/min centrifugation.Supernatant in centrifuge tube is transferred in clean container, obtains graphene Dispersion liquid;4kg self-crosslinkings organic silicon emulsion, 0.4kg copper stearates and 0.4kg pentaerythrites are added into 10kg dispersion liquids, by force Power, which is uniformly mixed, is made slurry, then by spray dryer, is dried with 1900r/min rotating speed, obtains composite particles; Five roll calendars are selected, draw ratio 2, rolling velocity 60m/min, roller temperature is 120 DEG C, and composite particles are added and rolled The charging aperture of machine, during particle is downtrodden, organosilicon occurs self-crosslinking and forms tridimensional network and film forming, and scattered Graphene mutually cooperatively forms complete covering, plays tight anticorrosion, waterproof, gas-tight and other effects.Then film is carried out Sided corona treatment, its surface adhesion is lifted, obtain the graphene anti-corrosion film of Pasting.
The anti-corrosion film obtained to embodiment 3, its indoor anticorrosive grade and outdoor anti-corrosion grade are tested, as shown in table 2.Will It is pasted with metallic copper, L-type stripping being carried out after 24h, tests its peel strength, as shown in table 2.
Embodiment 4
The graphene anti-corrosion film and preparation method of a kind of Pasting, it is as follows that it prepares the detailed process of anti-corrosion film:
3.5kg graphite powders are added in glass container, add 10kgN, dinethylformamide, after being well mixed, use is fresh-keeping Film seals vessel port, and container is placed in ice bath.Then ultrasonic cell disrupte machine is used in a manner of 2s on, 2s off It is ultrasonically treated, stops ultrasound after 30min.Then the supernatant of mixture is taken, is added in centrifuge tube, and in centrifuge In 18min handled with 550r/min centrifugation.Supernatant in centrifuge tube is transferred in clean container, obtains graphene Dispersion liquid;6kg self-crosslinkings organic silicon emulsion, 0.8kg magnesium stearates and 0.3kg mannitol are added into 10kg dispersion liquids, by force Power, which is uniformly mixed, is made slurry, then by spray dryer, is dried with 22000r/min rotating speed, obtains compound Grain;Four-roll calender is selected, draw ratio 2, rolling velocity 70m/min, roller temperature is 130 DEG C, and composite particles are added The charging aperture of calender, during particle is downtrodden, organosilicon occurs self-crosslinking and forms tridimensional network and film forming, with point Scattered graphene mutually cooperatively forms complete covering, plays tight anticorrosion, waterproof, gas-tight and other effects.Then to film Sided corona treatment is carried out, its surface adhesion is lifted, obtains the graphene anti-corrosion film of Pasting.
The anti-corrosion film obtained to embodiment 4, its indoor anticorrosive grade and outdoor anti-corrosion grade are tested, as shown in table 2.Will It is pasted with metallic copper, L-type stripping being carried out after 24h, tests its peel strength, as shown in table 2.
Embodiment 5
The graphene anti-corrosion film and preparation method of a kind of Pasting, it is as follows that it prepares the detailed process of anti-corrosion film:
4.5kg graphite powders are added in glass container, add 10kgN, dinethylformamide, after being well mixed, use is fresh-keeping Film seals vessel port, and container is placed in ice bath.Then ultrasonic cell disrupte machine is used in a manner of 2s on, 2s off It is ultrasonically treated, stops ultrasound after 20min.Then the supernatant of mixture is taken, is added in centrifuge tube, and in centrifuge In 15min handled with 500r/min centrifugation.Supernatant in centrifuge tube is transferred in clean container, obtains graphene Dispersion liquid;5kg self-crosslinkings organic silicon emulsion, 0.6kg zinc stearates and 0.4kg xylitols are added into 10kg dispersion liquids, by force Power, which is uniformly mixed, is made slurry, then by spray dryer, is dried with 25000r/min rotating speed, obtains compound Grain;Two-roll calendar is selected, draw ratio 2, rolling velocity 90m/min, roller temperature is 100 DEG C, and composite particles are added The charging aperture of calender, during particle is downtrodden, organosilicon occurs self-crosslinking and forms tridimensional network and film forming, with point Scattered graphene mutually cooperatively forms complete covering, plays tight anticorrosion, waterproof, gas-tight and other effects.Then to film Sided corona treatment is carried out, its surface adhesion is lifted, obtains the graphene anti-corrosion film of Pasting.
The anti-corrosion film obtained to embodiment 5, its indoor anticorrosive grade and outdoor anti-corrosion grade are tested, as shown in table 2.Will It is pasted with metallic copper, L-type stripping being carried out after 24h, tests its peel strength, as shown in table 2.
Embodiment 6
The graphene anti-corrosion film and preparation method of a kind of Pasting, it is as follows that it prepares the detailed process of anti-corrosion film:
4kg graphite powders are added in glass container, 10kgN is added, dinethylformamide, after being well mixed, uses preservative film Vessel port is sealed, and container is placed in ice bath.Then ultrasonic cell disrupte machine is used in a manner of 2s on, 2s off pair It is ultrasonically treated, and stops ultrasound after 35min.Then the supernatant of mixture is taken, is added in centrifuge tube, and in centrifuge 10min is handled with 400r/min centrifugation.Supernatant in centrifuge tube is transferred in clean container, obtains graphene Dispersion liquid;4.5kg self-crosslinkings organic silicon emulsion, 0.5kg barium stearates and 0.2kg pentaerythrites are added into 10kg dispersion liquids, Strong stirring is well mixed to be made slurry, then by spray dryer, is dried with 18000r/min rotating speed, obtains compound Grain;Tri-roll press machine is selected, draw ratio 2, rolling velocity 50m/min, roller temperature is 140 DEG C, and composite particles are added The charging aperture of calender, during particle is downtrodden, organosilicon occurs self-crosslinking and forms tridimensional network and film forming, with point Scattered graphene mutually cooperatively forms complete covering, plays tight anticorrosion, waterproof, gas-tight and other effects.Then to film Sided corona treatment is carried out, its surface adhesion is lifted, obtains the graphene anti-corrosion film of Pasting.
The anti-corrosion film obtained to embodiment 6, its indoor anticorrosive grade and outdoor anti-corrosion grade are tested, as shown in table 2.Will It is pasted with metallic copper, L-type stripping being carried out after 24h, tests its peel strength, as shown in table 2.
Comparative example 1
Graphene dispersing solution is not used, composite particles are directly made using self-crosslinking organic silicon emulsion, dispersant and stabilizer, then It is consistent with embodiment 6 through rolling film forming and sided corona treatment, other preparation conditions.
The anti-corrosion film obtained to comparative example 1, its indoor anticorrosive grade and outdoor anti-corrosion grade are tested, as shown in table 2.Will It is pasted with metallic copper, L-type stripping being carried out after 24h, tests its peel strength, as shown in table 2.
Comparative example 2
Sided corona treatment is not carried out, and directly by calendered film with being hot bonding by protection face, other preparation conditions are consistent with embodiment 6.
The anti-corrosion film obtained to comparative example 2, test its indoor anticorrosive grade and outdoor anti-corrosion grade, wherein indoor anticorrosive Grade is divided into:Indoor anti-moderate corrosion type F1;Indoor resistant to strong corrosion type F2;Outdoor anti-corrosion grade is divided into:Prevent light corrosion type in open air W;Outdoor anti-moderate corrosion type WF1;Outdoor resistant to strong corrosion type WF2, as shown in table 2.Itself and metallic copper are hot bonding, after 24h L-type stripping is carried out, tests its peel strength, as shown in table 2.
Table 2
Performance indications Peel strength(kN/m) Indoor anticorrosive grade Outdoor anti-corrosion grade
Comparative example 1 3.45 F1 W
Comparative example 2 1.36 F2 WF2
Embodiment 1 3.64 F2 WF2
Embodiment 2 3.25 F2 WF2
Embodiment 3 3.38 F2 WF2
Embodiment 4 3.16 F2 WF2
Embodiment 5 3.27 F2 WF2
Embodiment 6 3.41 F2 WF2

Claims (10)

1. the preparation method of the graphene anti-corrosion film of a kind of Pasting, it is characterised in that first using graphite powder as raw material, in N, N- Ultrasound peels off the dispersion liquid that graphene is made in dimethylformamide, then with self-crosslinking organic silicon emulsion, dispersant and stably Agent mixes, spray-dried obtained composite particles, then simultaneously sided corona treatment, the graphene anti-corrosion for obtaining Pasting are thin through rolling film forming Film, preparation comprise the following steps that:
(1)The graphite powder of certain mass is added in glass container, adds the DMF of certain mass, mixing After uniformly, vessel port is sealed with preservative film, and container is placed in ice bath, then it is carried out using ultrasonic cell disrupte machine It is ultrasonically treated, the supernatant of mixture is taken after ultrasound, add in centrifuge tube, high speed centrifugation, the supernatant in centrifuge tube is shifted Into clean container, the dispersion liquid of graphene is obtained;
(2)To step(1)A certain amount of self-crosslinking organic silicon emulsion, dispersant and stabilizer are added in the dispersion liquid of gained, by force Power, which is uniformly mixed, is made slurry, is then dried by spray dryer, obtains composite particles;
(3)Suitable calender is selected, roller rolling velocity and temperature are set, by step(2)The composite particles of gained add pressure Prolong machine, be pressed into film, sided corona treatment then is carried out to film, produce the graphene anti-corrosion film of Pasting.
A kind of 2. graphene anti-corrosion film and preparation method of Pasting according to claim 1, it is characterised in that:Step (1)The addition quality of the graphite powder is the 3~5% of DMF quality.
A kind of 3. preparation method of the graphene anti-corrosion film of Pasting according to claim 1, it is characterised in that:Step (1)In the whole dispersion process, temperature≤30 DEG C of dispersion liquid.
A kind of 4. preparation method of the graphene anti-corrosion film of Pasting according to claim 1, it is characterised in that:Step (1)The ultrasound treatment patterns are ultrasonic 2s, stop 2s, then ultrasonic 2s, stop 2s, so repeatedly, are ultrasonically treated 15~35min altogether.
A kind of 5. graphene anti-corrosion film and preparation method of Pasting according to claim 1, it is characterised in that:Step (1)The rotating speed of the high speed centrifugation processing is 400~600r/min, and centrifugation time is 10~20min.
A kind of 6. preparation method of the graphene anti-corrosion film of Pasting according to claim 1, it is characterised in that:Step (2)The dispersant is at least one of barium stearate, zinc stearate, magnesium stearate, copper stearate or calcium stearate;It is described Stabilizer is at least one of pentaerythrite, xylitol or mannitol;The addition of the self-crosslinking organic silicon emulsion is point The 40~60% of dispersion liquid quality;The addition of the dispersant is the 4~8% of dispersion liquid quality;The addition of the stabilizer is The 2~4% of dispersion liquid quality.
A kind of 7. preparation method of the graphene anti-corrosion film of Pasting according to claim 1, it is characterised in that:Step (2)The rotating speed of the spray dryer is 18000~25000r/min, a diameter of 50~150mm of spray disk, the dry powder rate of recovery >= 95%。
A kind of 8. preparation method of the graphene anti-corrosion film of Pasting according to claim 1, it is characterised in that:Step (3)The calender is two-roll calendar, tri-roll press machine, four-roll calender or five roll calendars;The draw ratio of calender is 2 ~2.5, rolling velocity is 50~90m/min, and roller temperature is 100~140 DEG C.
9. according to a kind of preparation method of the graphene anti-corrosion film of the Pasting of claim 1 or 8, it is characterised in that:Step Suddenly(3)Film forming thickness after the calendering is 10~30 μm.
10. the graphene anti-corrosion film for the Pasting being prepared using any one of claim 1~9 preparation method.
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