CN107298924A - A kind of graphene conductive slurry and preparation method thereof, application process - Google Patents
A kind of graphene conductive slurry and preparation method thereof, application process Download PDFInfo
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- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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Abstract
The invention belongs to grapheme material technical field, a kind of graphene conductive slurry, including the backup of following weight are made than raw material：Including few 0.5-15.0wt% of layer graphene；0.1-5.0wt% of dispersant；80-99.4wt% of diluent；10-40wt% of organic resin.Screening of the present invention by early stage to dispersant, in the mixed process of graphene powder and diluent, graphene can be more easily dispersed in diluent, and obtained dispersion stability is good, the selected dispersant of addition coordinates the present invention to use technique to promote stripping of the graphene in diluent, replaces partial solvent to increase the solid content of slurry with part resin in the slurry, improves Stability of Slurry, prevent that returning for graphene is folded, and good compatibility can be provided for the application in later stage.The present invention can prepare function admirable, the high graphene conductive slurry of stability, and the low feasible process of cost and be adapted to industrial production.
Description
Technical field
The invention belongs to grapheme material technical field, be related to a kind of easy dispersed graphite alkene electrocondution slurry preparation method and
Its application process.
Background technology
Graphene (Graphene) is most thin, the most hard nano material in known world, and it is almost fully transparent,
Only absorb 2.3% light；Graphene is also known as mono-layer graphite, and a kind of flat film being made up of carbon atom is shelled from graphite material
From the thickness of only one of which carbon atom is the two-dimensional material by single layer of carbon atom in honeycomb lattice arrangement form.The knot of graphene
Structure is highly stable, and carbon-carbon bond (carbon-carbon bond) is onlyThe connection between carbon atom inside graphene
It is very flexible, when applying external force in graphene, carbon atom face meeting flexural deformation so that carbon atom need not be rearranged to adapt to outer
Power, so that holding structure is stable.The lattice structure of this stabilization makes graphene have outstanding thermal conductivity, and thermal conductivity factor is up to
5300W/mK, higher than CNT and diamond.In addition, when the electronics in graphene is moved in track, will not be because of lattice
Defect introduces foreign atom and scattered.Because interatomic force is very strong, at normal temperatures, even if surrounding carbon atom is sent out
Life is telescoped, and the interference that graphene internal electron is subject to is also very small, the super 15000cm2/Vs of its electron mobility under normal temperature, electricity
The movement velocity of son has reached the 1/300 of the light velocity, and higher than CNT or silicon crystal, and resistivity about 10-6 Ω cm,
It is lower than copper or silver, it is the minimum material of current world resistivity.Because graphene has above special benefits, in electrocondution slurry
In only need to add few part and just can largely improve slurry electric conductivity.Although on preparing graphene conductive slurry
Patent is it has been reported that the patent for still directly preparing graphene conductive slurry using mechanical stripping is not yet reported.Patent
201510239652.5 report using inorganic strong oxidizer to graphite progress intercalation processing, are then prepared for by ultrasonic method
Graphene.This method handles the chemical constitution for being easily destroyed graphite using strong oxidizer, reduces sp2 hybridized orbits, causes stone
The hydraulic performance decline of black alkene, and ultrasonically treated incomplete in the presence of processing, the problem of processing solid content is low.And the present invention uses weak oxide
Intercalation processing is carried out to graphite, is conducive to protecting the chemical constitution of graphene, and mechanical stripping processing is without dead angle and without after
Continuous processing is with regard to that can prepare large arch dam graphene conductive slurry.Patent 201510713784.7 is using high molecular surfactant to stone
Ink carries out intercalation processing, is then by mechanically pulling off and is prepared for graphene, and by adjusting the parent of high molecular surfactant
Hydrophile-lipophile balance value (HLB) is to adjust the compatibility between surfactant and different solvents, so as to improve mechanical stripping efficiency.
But the program mainly studies the preparation of surfactant, graphene conductive slurry is not studied.
The content of the invention
To solve the above problems, the present invention provides a kind of graphene conductive slurry, the present invention uses non-ionic macromolecule
Surfactant prepares graphene conductive slurry, directly obtains with preferable dispersive property, the high graphene conductive slurry of stability
Material, greatly simplifies the technical process for preparing graphene conductive slurry.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of graphene conductive slurry, including the backup of following weight are made than raw material：
As preferred, the diluent is deionized water, propane diols, n-butanol, isopropanol, butanone, cyclohexanone, acetic acid
N-butyl, methoxy methyl propionate, ethylene acetate, 1-METHYLPYRROLIDONE, dimethylbenzene, trimethylbenzene, expoxy propane fourth
One or more of combinations in base ether, expoxy propane phenyl ether, phenmethylol.
As preferred, the dispersant is polyethylene glycol, polyethylene glycol oxide, polyvinylpyrrolidone, Tissuemat E, hydroxyl
Methylpropylcelluloses, hydroxyethyl cellulose, sodium carboxymethylcellulose, polycarboxylic acids receive salt, polycarboxylic acids ammonium salt, modified polyurethane,
And the unsaturated polynary acid polymer of low molecule amount and one or more of combinations in the solution of polysiloxanes EVA.
As preferred, the organic resin is alkyd resin, acrylic resin, epoxy resin, polyester resin, amino tree
One or more in fat.
A kind of graphene conductive blank preparation technicses, comprise the following steps：
Step S1, expanded graphite raw material；
It is step S2, the graphite raw material after expansion is pre-dispersed, obtain pre-dispersed graphite raw material；
Step S3, by pre-dispersed graphite raw material mechanical lapping, obtain fine graphite raw material；
Step S4, mechanical stripping fine graphite raw material,
Fine graphite slurry in step S5, centrifugal treating step S4 after mechanical stripping, obtains graphene conductive slurry.
As preferred, in the step S4, mechanical milling tech uses wet ball grinding, and expanded graphite particle diameter is ground to
Below 50um, to the further grinding of expanded graphite and stripping, particle diameter≤5um is being finally obtained using nanometer sand mill, and thickness≤
20nm graphene conductive slurry.
A kind of application process of graphene,
The composition by weight of raw material is：200 parts of graphene slurry, 500 parts of AB-EP-44 aqueous epoxy resin emulsions, deionization
50 parts of water, 100 parts of calcium carbonate, 70 parts of talcum powder, 50 parts of R902 titanium dioxides, 20 parts of SN-5029 dispersants, wetting agent, levelling agent,
Each 3 parts of defoamer, 20 parts of thickener, 5 parts of AMP-95 multifunctional assistants, above material is scattered to stir, and then adds AB-
HGF aqueous epoxy resin curing agents stir, film making sheet；
Above-mentioned graphene slurry weighs 91.0% deionized water and 2.0% dispersant PEO (polyoxyethylenes by mass fraction
Alkene) into the agitator tank of dried and clean, stirring 30min is completely dissolved up to PEO, and few layer graphene is then added thereto
7.0%, high-speed stirred 120min are well mixed it, are then ground through high-speed emulsifying machine or colloid mill, then with nanometer sand mill,
2.0mm zirconium oxide beads are medium, 1500rpm grind obtain for 5 times being uniformly dispersed it is obtained.
A kind of application process of graphene,
The composition by weight of raw material is：150 parts of graphene slurry, 350 parts of epoxy resin, 30 parts of dispersant, active micro silicon powder
100 parts, 100 parts of talcum powder, 100 parts of calcium carbonate, 50 parts of titanium dioxide, defoamer, levelling agent, each 3 parts of anti-settling agent, methyl-isobutyl
50 parts of ketone, 70 parts of n-butyl acetate, 50 parts of n-butanol, above material is uniformly dispersed, and is then adding ANCAMIDE260A solidifications
25.0 parts of agent, stirs, film making sheet；
Above-mentioned graphene slurry weighs 62.0% ethylene acetate, 30% Tao Shi DER331 epoxies by mass fraction
Resin and 1.0% dimension orchid 108S dispersants stir 10min, are well mixed it, then to it into the agitator tank of dried and clean
Middle to add few layer graphene 7.0%, high-speed stirred 120min is well mixed it；Then through high-speed emulsifying machine or colloid barreling
Mill, then with nanometer sand mill, 2.0mm zirconium oxide beads are medium, 1500rpm grind obtain for 5 times being uniformly dispersed it is obtained.
A kind of application process of graphene,
The composition by weight of raw material is：15.0 parts of graphene slurry, three wooden 300 parts of Hydroxylated acrylic resins, n-butyl acetate
80 parts, 80 parts of ethylene glycol monobutyl ether, 50 parts of methoxy methyl propionate, 80 parts of titanium dioxide, 100 parts of talcum powder, 100 parts of calcium carbonate,
50 parts of kaolin, 30 parts of BYK-104S dispersants, 3 parts of defoamer, 3 parts of levelling agent, 5 parts of drier, dispersed with stirring are uniform, then
120 parts of N-75 curing agent is added, stir film making sheet；
Above-mentioned graphene slurry weighs 62.0% ethylene acetate, 30% Hydroxylated acrylic resin by mass fraction
In the agitator tank of BYK104S dispersants to dried and clean, 10min is stirred, it is well mixed, few layer is then added thereto
Graphene 7.0%, high-speed stirred 120min is well mixed it；Then ground through high-speed emulsifying machine or colloid mill, then with nanometer
Sand mill, 2.0mm zirconium oxide beads are medium, 1500rpm grind obtain for 5 times being uniformly dispersed it is obtained.
A kind of application process of graphene,
The composition by weight of raw material is：250 parts of graphene slurry, 930 parts of LiFePO4,50 parts of PVDF, 1000 parts of NMP,
With deaeration machine be homogenized 10 minutes, then film, drying, cut into slices be prepared into 2016 button cell anode pole pieces；
The preparation of above-mentioned graphene slurry：91.0%N- methyl pyrrolidones and 1.0% polyethylene are weighed by mass fraction
Pyrrolidones dispersant stirs 10min into the agitator tank of dried and clean, is well mixed it, and few layer is then added thereto
Graphene 8.0%, high-speed stirred 120min is well mixed it；Then ground through high-speed emulsifying machine or colloid mill, then with nanometer
Sand mill, 2.0mm zirconium oxide beads are medium, and 1500rpm grinds 5 times and obtains finely dispersed graphene slurry.
Beneficial effect：
Screening of the present invention by early stage to dispersant, in the mixed process of graphene powder and diluent, graphene
It can be more easily dispersed in diluent, and obtained dispersion stability is good, the selected dispersant of addition coordinates the present invention to be used
Technique can promote stripping of the graphene in diluent, replace partial solvent to make the solid content of slurry with part resin in the slurry
Increase, improves Stability of Slurry, prevents that returning for graphene is folded, and can provide good compatibility for the application in later stage.The present invention
Function admirable, the high graphene conductive slurry of stability, and the low feasible process of cost can be prepared and be adapted to industrial production.
Brief description of the drawings
Fig. 1, Fig. 2 are the graphene slurry obtained by the embodiment of the present invention, the graphene powder obtained after washing, drying
SEM figure.
Fig. 3 is the conductive multiplying power test result of Graphene electrodes.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
The present invention provides a kind of graphene conductive slurry, including the backup of following weight is made than raw material：
As preferred, wherein diluent is deionized water, propane diols, n-butanol, isopropanol, butanone, cyclohexanone, acetic acid
N-butyl, methoxy methyl propionate, ethylene acetate, 1-METHYLPYRROLIDONE, dimethylbenzene, trimethylbenzene, expoxy propane fourth
One or more of combinations in base ether, expoxy propane phenyl ether, phenmethylol.
As preferred, wherein dispersant is polyethylene glycol, polyethylene glycol oxide, polyvinylpyrrolidone, Tissuemat E, hydroxyl
Methylpropylcelluloses, hydroxyethyl cellulose, sodium carboxymethylcellulose, polycarboxylic acids receive salt, polycarboxylic acids ammonium salt, modified polyurethane,
And the unsaturated polynary acid polymer of low molecule amount and one or more of combinations in the solution of polysiloxanes EVA.
As preferred, wherein organic resin is alkyd resin, acrylic resin, epoxy resin, polyester resin, amino tree
One or more in fat.
Screening of the present invention by early stage to dispersant, in the mixed process of graphene powder and diluent, graphene
It can be more easily dispersed in diluent, and obtained dispersion stability is good, the selected dispersant of addition coordinates the present invention to be used
Technique can promote stripping of the graphene in diluent, replace partial solvent to make the solid content of slurry with part resin in the slurry
Increase, improves Stability of Slurry, prevents that returning for graphene is folded, and can provide good compatibility for the application in later stage.
It is the preparation method of above-mentioned grapheme material below.
Embodiment 1
A kind of preparation of graphene slurry：94.0% deionized water is weighed by mass fraction and 1.0% dispersant PEO is (poly-
Ethylene oxide) into the agitator tank of dried and clean, stirring 30min is completely dissolved up to PEO, and few layer graphite is then added thereto
Alkene 5.0%, high-speed stirred 120min is well mixed it.Then grind, then be sanded with nanometer through high-speed emulsifying machine or colloid mill
Machine, 2.0mm zirconium oxide beads are medium, and 1500rpm grinds 5 times and obtains finely dispersed graphene slurry.
Embodiment 2
A kind of preparation of graphene slurry：91.0% deionized water is weighed by mass fraction and 2.0% dispersant PEO is (poly-
Ethylene oxide) into the agitator tank of dried and clean, stirring 30min is completely dissolved up to PEO, and few layer graphite is then added thereto
Alkene 7.0%, high-speed stirred 120min is well mixed it.Then grind, then be sanded with nanometer through high-speed emulsifying machine or colloid mill
Machine, 2.0mm zirconium oxide beads are medium, and 1500rpm grinds 5 times and obtains finely dispersed graphene slurry.
Embodiment 3
A kind of preparation of graphene slurry：94.0% ethylene acetate is weighed by mass fraction and 1.0% dimension is blue
108S dispersants stir 10min into the agitator tank of dried and clean, are well mixed it, and few layer graphite is then added thereto
Alkene 5.0%, high-speed stirred 120min is well mixed it.Then grind, then be sanded with nanometer through high-speed emulsifying machine or colloid mill
Machine, 2.0mm zirconium oxide beads are medium, and 1500rpm grinds 5 times and obtains finely dispersed graphene slurry.
Embodiment 4
A kind of preparation of graphene slurry：92.0% ethylene acetate is weighed by mass fraction and 1.0% dimension is blue
108S dispersants stir 10min into the agitator tank of dried and clean, are well mixed it, and few layer graphite is then added thereto
Alkene 7.0%, high-speed stirred 120min is well mixed it.Then grind, then be sanded with nanometer through high-speed emulsifying machine or colloid mill
Machine, 2.0mm zirconium oxide beads are medium, and 1500rpm grinds 5 times and obtains finely dispersed graphene slurry.
Embodiment 5
A kind of preparation of graphene slurry：62.0% ethylene acetate, 30% Tao Shi are weighed by mass fraction
DER331 epoxy resin and 1.0% dimension orchid 108S dispersants stir 10min, make its mixing equal into the agitator tank of dried and clean
It is even, few layer graphene 7.0% is then added thereto, and high-speed stirred 120min is well mixed it.Then through high-speed emulsifying machine
Or colloid mill grinding, then with nanometer sand mill, 2.0mm zirconium oxide beads are medium, 1500rpm grinds 5 times and obtains finely dispersed
Graphene slurry.
Embodiment 6
A kind of preparation of graphene slurry：62.0% ethylene acetate, 30% Tao Shi are weighed by mass fraction
DER331 epoxy resin and 1.5%BYK104S dispersants stir 10min into the agitator tank of dried and clean, make its mixing equal
It is even, few layer graphene 7.0% is then added thereto, and high-speed stirred 120min is well mixed it.Then through high-speed emulsifying machine
Or colloid mill grinding, then with nanometer sand mill, 2.0mm zirconium oxide beads are medium, 1500rpm grinds 5 times and obtains finely dispersed
Graphene slurry.
Embodiment 7
A kind of preparation of graphene slurry：62.0% ethylene acetate, 30% hydroxy are weighed by mass fraction
Acid resin and BYK104S dispersants stir 10min into the agitator tank of dried and clean, are well mixed it, then add thereto
Enter few layer graphene 7.0%, high-speed stirred 120min is well mixed it.Then ground through high-speed emulsifying machine or colloid mill, then
With nanometer sand mill, 2.0mm zirconium oxide beads are medium, and 1500rpm grinds 5 times and obtains finely dispersed graphene slurry.
Embodiment 8
A kind of preparation of graphene slurry：91.0%NMP (1-METHYLPYRROLIDONE) and 1.0% are weighed by mass fraction
PVP (polyvinylpyrrolidone) dispersants stir 10min into the agitator tank of dried and clean, are well mixed it, then to it
Middle to add few layer graphene 8.0%, high-speed stirred 120min is well mixed it.Then through high-speed emulsifying machine or colloid barreling
Mill, then with nanometer sand mill, 2.0mm zirconium oxide beads are medium, 1500rpm grinds 5 times and obtains finely dispersed graphene slurry.
It is the application process of graphene slurry below.
Prepared graphene slurry of the invention has good electric conductivity, and easily scattered, stability is high, can be led in lithium battery
Apply in the fields such as electric agent, anti-static coatings, electrically-conducting paint, electrically conductive ink, conducting resinl, antistatic fiber.Now just present invention preparation
Graphene conductive slurry application example be specifically described.
Embodiment 9
Weigh respectively graphene slurry 20.0g, AB-EP-44 aqueous epoxy resin emulsion 50.0g prepared by embodiment 2,
Deionized water 5.0g, calcium carbonate 10.0g, talcum powder 7.0g, R902 titanium dioxide 5.0g, SN-5029 dispersant 2.0g, wetting agent,
Each 0.3g of levelling agent, defoamer, thickener 2.0g, AMP-95 multifunctional assistant 0.5g are scattered to stir, and then adds AB-
HGF aqueous epoxy resin curing agents stir, film making sheet, after being detected after abundant drying, are shown in Table 1.
Embodiment 10
Weigh graphene slurry 15.0g prepared by above-described embodiment 4, three wood E-44 (75%) epoxy resin 35.0g,
BYK-163 dispersants 3.0g, active micro silicon powder 10.0g, talcum powder 10.0g, calcium carbonate 10.0g, titanium dioxide 5.0g, defoamer,
Each 0.3g of levelling agent, anti-settling agent, methyl iso-butyl ketone (MIBK) 5.0g, n-butyl acetate 7.0g, n-butanol 5.0g are uniformly dispersed, Ran Hou
ANCAMIDE260A curing agent 25.0g are added, are stirred, film making sheet, band is detected after fully drying, and is shown in Table 1.
Embodiment 11
Weigh graphene slurry 15.0g, the three wooden Hydroxylated acrylic resin 935H30.0g, vinegar prepared by above-described embodiment 7
Sour N-butyl 8.0g, ethylene glycol monobutyl ether 8.0, methoxy methyl propionate 5.0g, titanium dioxide 8.0g, talcum powder 10.0g, calcium carbonate
10.0g, kaolin 5.0g, BYK-104S dispersant 3.0g, defoamer 0.3g, levelling agent 0.3g, drier 0.5g, dispersed with stirring
Uniformly, N-75 curing agent 12.0g are then added, stir film making sheet, after being detected after abundant drying, is shown in Table 1.
Table 1
Result above shows that the graphene slurry in the present invention has addition few, excellent electrical property.In electrically-conducting paint
In, can be used as main conductive agent, with cost it is low, easily it is scattered, corrosion-resistant, do not migrate, low cost and other advantages.
Using real row 4
The graphene conductive slurry 25.0g prepared by above-described embodiment 8, LiFePO4 (German side's nanometer) 93.0g are weighed,
PVDF (HSV900) 5.0g, NMP100.0g, with deaeration machine be homogenized 10 minutes, then film, drying, cut into slices be prepared into 2016 buttons
Battery positive pole piece, is then assembled into button cell and is tested, multiplying power test result is shown in Fig. 3.
Above content is only presently preferred embodiments of the present invention, for one of ordinary skill in the art, according to the present invention's
Thought, in specific embodiments and applications can be so that many changes may be made, as long as these changes are without departing from the structure of the present invention
Think, belong to protection scope of the present invention.
Claims (10)
1. a kind of graphene conductive slurry, it is characterised in that be made including the backup of following weight than raw material：
2. graphene conductive slurry according to claim 1, it is characterised in that：The diluent is deionized water, the third two
Alcohol, n-butanol, isopropanol, butanone, cyclohexanone, n-butyl acetate, methoxy methyl propionate, ethylene acetate, N- methyl
One or more of groups in pyrrolidones, dimethylbenzene, trimethylbenzene, epoxy propane butyl ether, expoxy propane phenyl ether, phenmethylol
Close.
3. graphene conductive slurry according to claim 1, it is characterised in that：The dispersant is polyethylene glycol, polyoxy
Change ethene, polyvinylpyrrolidone, Tissuemat E, hydroxymethyl-propyl cellulose, hydroxyethyl cellulose, sodium carboxymethylcellulose,
Polycarboxylic acids receives salt, polycarboxylic acids ammonium salt, the unsaturated polynary acid polymer of modified polyurethane and low molecule amount and polysiloxanes copolymerization
One or more of combinations in the solution of body.
4. graphene conductive slurry according to claim 1, it is characterised in that：The organic resin is alkyd resin, third
One or more in olefin(e) acid resin, epoxy resin, polyester resin, amino resins.
5. a kind of graphene conductive blank preparation technicses, it is characterised in that comprise the following steps：
Step S1, expanded graphite raw material；
It is step S2, the graphite raw material after expansion is pre-dispersed, obtain pre-dispersed graphite raw material；
Step S3, by pre-dispersed graphite raw material mechanical lapping, obtain fine graphite raw material；
Step S4, mechanical stripping fine graphite raw material,
Fine graphite slurry in step S5, centrifugal treating step S4 after mechanical stripping, obtains graphene conductive slurry.
6. graphene conductive blank preparation technicses according to claim 5, it is characterised in that：In the step S4, machinery
Grinding technics uses wet ball grinding, and expanded graphite particle diameter is ground into below 50um, is using nanometer sand mill to expanded graphite
Further grinding and stripping, finally obtain particle diameter≤5um, thickness≤20nm graphene conductive slurry.
7. a kind of application process of graphene, it is characterised in that：
The composition by weight of raw material is：200 parts of graphene slurry, 500 parts of AB-EP-44 aqueous epoxy resin emulsions, deionized water 50
Part, 100 parts of calcium carbonate, 70 parts of talcum powder, 50 parts of R902 titanium dioxides, 20 parts of SN-5029 dispersants, wetting agent, levelling agent, froth breaking
Each 3 parts of agent, 20 parts of thickener, 5 parts of AMP-95 multifunctional assistants, above material is scattered to stir, and then adds AB-HGF
Aqueous epoxy resin curing agent stirs, film making sheet；
Above-mentioned graphene slurry weighs 91.0% deionized water and 2.0% dispersant PEO (polyethylene glycol oxide) by mass fraction
Into the agitator tank of dried and clean, stirring 30min is completely dissolved up to PEO, and few layer graphene 7.0% is then added thereto,
High-speed stirred 120min is well mixed it, is then ground through high-speed emulsifying machine or colloid mill, then with nanometer sand mill, 2.0mm
Zirconium oxide bead is medium, 1500rpm grind obtain for 5 times being uniformly dispersed it is obtained.
8. a kind of application process of graphene, it is characterised in that：
The composition by weight of raw material is：150 parts of graphene slurry, 350 parts of epoxy resin, 30 parts of dispersant, active micro silicon powder 100
Part, 100 parts of talcum powder, 100 parts of calcium carbonate, 50 parts of titanium dioxide, defoamer, levelling agent, each 3 parts of anti-settling agent, methyl iso-butyl ketone (MIBK)
50 parts, 70 parts of n-butyl acetate, 50 parts of n-butanol, above material is uniformly dispersed, then add ANCAMIDE260A curing agent
25.0 parts, stir, film making sheet；
Above-mentioned graphene slurry weighs 62.0% ethylene acetate, 30% Tao Shi DER331 epoxy resin by mass fraction
With 1.0% dimension orchid 108S dispersants into the agitator tank of dried and clean, 10min is stirred, it is well mixed, then added thereto
Enter few layer graphene 7.0%, high-speed stirred 120min is well mixed it；Then ground through high-speed emulsifying machine or colloid mill, then
With nanometer sand mill, 2.0mm zirconium oxide beads are medium, 1500rpm grind obtain for 5 times being uniformly dispersed it is obtained.
9. a kind of application process of graphene, it is characterised in that：
The composition by weight of raw material is：15.0 parts of graphene slurry, three wooden 300 parts of Hydroxylated acrylic resins, 80 parts of n-butyl acetate,
80 parts of ethylene glycol monobutyl ether, 50 parts of methoxy methyl propionate, 80 parts of titanium dioxide, 100 parts of talcum powder, 100 parts of calcium carbonate, kaolin
50 parts, 30 parts of BYK-104S dispersants, 3 parts of defoamer, 3 parts of levelling agent, 5 parts of drier, dispersed with stirring is uniform, then adds N-
75 120 parts of curing agent, stir film making sheet；
Above-mentioned graphene slurry by mass fraction weigh 62.0% ethylene acetate, 30% Hydroxylated acrylic resin and
BYK104S dispersants stir 10min into the agitator tank of dried and clean, are well mixed it, and few layer stone is then added thereto
Black alkene 7.0%, high-speed stirred 120min is well mixed it；Then ground through high-speed emulsifying machine or colloid mill, then use nanometer sand
Grinding machine, 2.0mm zirconium oxide beads are medium, 1500rpm grind obtain for 5 times being uniformly dispersed it is obtained.
10. a kind of application process of graphene, it is characterised in that：
The composition by weight of raw material is：250 parts of graphene slurry, 930 parts of LiFePO4,50 parts of PVDF, 70 parts of NMP12, with de-
Bubble machine be homogenized 10 minutes, then film, drying, cut into slices be prepared into 2016 button cell anode pole pieces；
The preparation of above-mentioned graphene slurry：91.0%N- methyl pyrrolidones and 1.0% polyvinyl pyrrole are weighed by mass fraction
Alkanone dispersant stirs 10min into the agitator tank of dried and clean, is well mixed it, and few layer graphite is then added thereto
Alkene 8.0%, high-speed stirred 120min is well mixed it；Then grind, then be sanded with nanometer through high-speed emulsifying machine or colloid mill
Machine, 2.0mm zirconium oxide beads are medium, and 1500rpm grinds 5 times and obtains finely dispersed graphene slurry.
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