CN107880776A - It is a kind of that the scattered method for preparing graphene anticorrosive paint is carried by dendritic macromole - Google Patents
It is a kind of that the scattered method for preparing graphene anticorrosive paint is carried by dendritic macromole Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D187/00—Coating compositions based on unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
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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
- C09D5/08—Anti-corrosive paints
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The present invention provides a kind of by the scattered method for preparing graphene anticorrosive paint of dendritic macromole carrying.It is proposed to carry dispersed graphite alkene using dendritic macromole and be configured in coating, because a variety of groups are contained on dendritic macromole surface, it can effectively adsorb, carry graphene, it is good with cold coating compatibility, the dispersiveness of graphene is improved, avoids its own reunion.Relative to the general process for dispersing of graphene in coating, the inventive method dispersion effect is more preferable, and can significantly lift graphene incorporation, preferably utilizes the excellent properties of graphene.
Description
Technical field
The present invention relates to paint field, and in particular to a kind of carried by dendritic macromole disperses to prepare the painting of graphene anti-corrosion
The method of material.
Background technology
Metal material is damaged by the effect of surrounding medium, referred to as metal erosion.The corrosion of metal is most common corrosion
Form.During corrosion, there occurs chemistry or electrochemistry heterogeneous reaction on the interface of metal, metal is set to be transferred to oxidation (ion) shape
State.This can significantly reduce the mechanical properties such as the intensity, plasticity, toughness of metal material, destroy the geometry of hardware, increase
Add the abrasion between part, deteriorate the physical property such as electrical and optical, shorten the service life of equipment.Corrosion of metal phenomenon is very
Generally, the corrosion of the wherein maximum metal-ironwork of dosage is most commonly seen.Causing the corrosion factor of metal material has a lot, its
Include, salinity, temperature, pH value and microbiologic(al) corrosion in air or liquid.Conventional anti-corrosion measure is, in metallic surface
One layer of anticorrosive paint is smeared, by metal and air insulated, reaches corrosion-resistant effect.
Anticorrosive paint, conventional anticorrosive paint and anticorrosive paint are generally divided into, are one kind essential in paint
Coating.Conventional anticorrosive paint is under general condition, etch-proof effect, the longevity that protection non-ferrous metal uses to be played to metal etc.
Life；It for anticorrosive paint refers to relatively conventional anticorrosive paint, can be applied in relatively harsh corrosive environment, and have and can reach
A kind of anticorrosive paint of protection period longer than conventional anticorrosive paint.Anticorrosive paint is always one of important branch of coating, in work
Using quite varied in industry production.In national economy production, the using of a large amount of metallic articles causes the requirement of equipment anticorrosion very
Height, the market demand of anticorrosive paint, which is presented, persistently rises situation.
Graphene is thickness minimum, the species of maximum intensity in nano material.Because absorptance is very low, only 2.3%, institute
It is almost fully transparent with outward appearance.Graphene excellent physical properties, heat conductivility are also higher than CNT and diamond, room temperature
Its electron mobility exceedes CNT or silicon crystal under environment.Graphene is that electric conductivity is best in known materials on our times
Material, resistivity is less than copper or silver.Graphene have concurrently specific surface area is big, good conductivity, chemical stability are strong, mechanical property and
The advantages that excellent thermal conductivity, once appearance, just by the extensive concern of countries in the world.Graphene application is very wide,
Coating is an important component in the numerous application fields of current graphene.Graphene has hydrophobic and lyophobic property in itself, its
Lamellar structure has " labyrinth " effect, has excellent anti-corrosion barrier property, can hinder water, corrosive ion etc. to metal base
Infiltration, delay the corrosion rate of metal base, so ground is played corrosion-resistant effect.Graphene leads to various coating resins
It is compound to cross the methods such as physical blending, in-situ polymerization and sol-gel technique；Or modified with coupling agent, or using works such as in-situ polymerizations
Skill.These techniques confirm feasible in modified aqueous paint, and performance improvement has certain effect.Nonetheless, graphene exists
Apply to exist in anticorrosive paint and be difficult to the defects of scattered, itself can be produced and reunited, its scattered uniformity, compactness is destroyed, lead
The obtained anticorrosion with coat effect of cause is poor, and barrier property is undesirable, and antiseptic property declines on the contrary.
Dendritic macromole is a kind of high regularity, three-dimensional structure, a kind of macromolecular with nanoscale.Branch
Shape macromolecular is different from traditional polymer freely wound, and three parts are divided into structure：Kernel is originated, is connected in and originates kernel
On the last layer functionalization group that is referred to as the repetitive structure in generation, is connected on dendritic macromole outermost layer repeat unit.Dendroid
Macromolecular is a kind of real nanoscale molecular, its diameter range from G0 generations to G10 on behalf of 1~13 nm, dendritic macromole
Structure, size, accurate size are controllable, and dendritic macromole can be grafted on graphenic surface by chemical bond, and this is graphene material
Being greatly improved for dispersive property of material provides possibility with application extension.
Currently, carry out a series of research work for scattering problem of the graphene in coating, achieve some achievements,
But graphene dispersion is improved and addition in coating is still limited, does not reach the requirement of modified anti-corrosive coating, stone
Scattering problem of the black alkene in high incorporation is that one of key technology of graphene performance is played in anticorrosive paint.
The content of the invention
Excellent properties and graphene for graphene are applied to exist in anticorrosive paint is difficult to the defects of scattered, Yi Jishi
The layer of black alkene easily again overlapping aggregation the defects of, technology art means are to carry graphene using carrier to be disperseed at present, but
Carry less efficient, obtained properties of product are unstable.Based on this, the present invention proposes that a kind of carried by dendritic macromole is disperseed
Graphene anticorrosive paint is prepared, realizes fine dispersion of the graphene in anticorrosive paint, lifts graphene incorporation, lifts anti-corrosion
The performance of coating.
A kind of to carry the scattered method for preparing graphene anticorrosive paint by dendritic macromole, concrete technology step is as follows：
（1）Carboxylated processing
72% concentrated sulfuric acid is put 0 ~ 3 DEG C is cooled in ice water tank, be placed in ice-water bath in there-necked flask and sequentially add graphite powder, NaNO3
With the concentrated sulfuric acid, 10 ~ 30min of mechanic whirl-nett reaction；Potassium permanganate is slowly added to, control there-necked flask interior reaction temperature is at 10 ~ 15 DEG C
Between, 1 ~ 2h of mechanic whirl-nett reaction；Then there-necked flask heating water bath is slowly dropped into distilled water and H to 80 ~ 95 DEG C2O2, machinery
Stir 30 ~ 120min；After solution colour is changed into glassy yellow from burgundy, filters, washed with 5% hydrochloric acid solution while hot；Centrifugation
Separate and be washed to solution by weakly acidic pH with distillation, 50 ~ 80 DEG C are dried in vacuo to obtain graphite oxide；The graphite powder, 72% dense sulphur
Acid, NaNO3, potassium permanganate, H2O2, distilled water addition part by weight be：1:35~45:0.4~0.7:3~5:2~5:90~150；
Graphite oxide is dispersed in water, 10 ~ 30min of ultrasonic disperse, into uniform aaerosol solution, adds NaOH and monoxone
Sodium, 1 ~ 2h of water bath sonicator, then neutralized with dilute HCl solution, the hydroxyl on graphene oxide and epoxy radicals is converted into carboxyl；Spend
Ion is washed to neutrality, 50 ~ 80 DEG C of vacuum drying, obtains carboxylated graphene（CO-GOOH)；The graphite oxide, H2O、
NaOH, the addition part by weight of sodium chloroacetate are：1:1000:40~50:45~60；
（2）Prepare Polyamidoamine Dendrimers-graphene
Ethylenediamine and methanol are added dropwise in the three-necked flask of nitrogen protection, magnetic agitation is uniform in ice-water bath；Add step
Suddenly（1）Obtained carboxylated graphene, then be added dropwise to the methanol solution of methyl acrylate, 20 ~ 30 DEG C of reactions 6 stirred below ~
24h；Then, solvent methanol and excessive raw material propylene acid methyl esters are removed at 50 DEG C, obtain Polyamidoamine Dendrimers-
Graphene；
（3）The preparation of graphene anticorrosive paint
By step（2）Obtained Polyamidoamine Dendrimers-graphene 3-10 parts by weight, titanium dioxide 5-10 parts by weight, talcum
Powder 10-15 parts by weight, different monooctyl ester 20-30 parts by weight, aluminium triphosphate 5-10 parts, Ludox 3-5 parts, 1.5 ~ 2.5 parts of propane diols,
Water 20-30 parts by weight add sand mill 120 ~ 240min of sanded treatment, obtain graphene anticorrosive paint.
Preferably, step（2）The ethylenediamine, methanol, methyl acrylate, the addition part by weight of carboxylated graphene
For：1:3~4:10~15：1.
Polyamidoamine Dendrimers are a kind of three-dimensional, novel macromolecules of high-sequential.Dendrimer with it is traditional
Linear polymer has very big difference in structure, brings characteristics much different from linear polymer, and these characteristics all can not
Explained with traditional polymer theoretical, thus the appearance of dendrimer is supplemented traditional polymer theoretical.Knot
Close the chemical property of graphene, the dendritic polyamide-amide (PAMAM) and carboxylic of present invention selection polyamines active function groups
Base graphite alkene reaction, polyamide-amide (PAMAM) are one of most ripe, most deep dendrimers of current research, and it both had
There is the general character of dendrimer, there is the characteristic of itself again, be first tree with 3 D stereo spherical structure being reported
Dendritic macromolecule.It is by initially triggering the internal layer that core, repeat unit form, the surface region three parts structure containing a large amount of functional groups
Into because there is highly branched, high degree of symmetry and surface to contain unique design feature such as a large amount of functional groups for it.Due to dendroid
Macromolecular surface contains a variety of groups, can effectively adsorb, carry graphene, so as to prevent graphene from reuniting in coating.
The present invention is a kind of to carry the scattered method for preparing graphene anticorrosive paint by dendritic macromole, with prior art phase
Than, its protrude the characteristics of and excellent effect be：
1st, propose to carry dispersed graphite alkene using dendritic macromole first and be configured in coating, due to dendritic macromole table
A variety of groups are contained in face, can effectively adsorb, carry graphene, good with cold coating compatibility, improve point of graphene
Property is dissipated, avoids its own reunion.Relative to the general process for dispersing of graphene in coating, the inventive method dispersion effect is more preferable, and
Graphene incorporation can be significantly lifted, preferably utilizes the excellent properties of graphene.
2nd, the present invention proposes a kind of graphene anticorrosive paint, has nontoxic, non-ignitable, easy for construction, fast drying, paint film machinery
Intensity is high, adhesive force is strong, antiseptic property is excellent, the advantages that coating excellent storage stability.The coating train, automobile, ship,
There is good applicability in terms of anticorrosion in the air of ferrous materials in the facilities such as bridge, pipeline, container, basin.
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
A kind of to carry the scattered method for preparing graphene anticorrosive paint by dendritic macromole, concrete technology step is as follows：
（1）Carboxylated processing
72% concentrated sulfuric acid is put 0 ~ 3 DEG C is cooled in ice water tank, be placed in ice-water bath in there-necked flask and sequentially add graphite powder, NaNO3
With the concentrated sulfuric acid, mechanic whirl-nett reaction 10min；Be slowly added to potassium permanganate, control there-necked flask interior reaction temperature 10 ~ 15 DEG C it
Between, mechanic whirl-nett reaction 1h；Then there-necked flask heating water bath is slowly dropped into distilled water and H to 80 DEG C2O2, mechanical agitation
30min；After solution colour is changed into glassy yellow from burgundy, filters, washed with 5% hydrochloric acid solution while hot；Centrifuge and be used in combination
Distillation is washed to solution by weakly acidic pH, and 50 DEG C are dried in vacuo to obtain graphite oxide；The graphite powder, 72% concentrated sulfuric acid, NaNO3, Gao Meng
Sour potassium, H2O2, distilled water addition part by weight be：1:35:0.4:3:2:90；
Graphite oxide is dispersed in water, 10 ~ 30min of ultrasonic disperse, into uniform aaerosol solution, adds NaOH and monoxone
Sodium, 1 ~ 2h of water bath sonicator, then neutralized with dilute HCl solution, the hydroxyl on graphene oxide and epoxy radicals is converted into carboxyl；Spend
Ion is washed to neutrality, 50 DEG C of vacuum drying, obtains carboxylated graphene（CO-GOOH)；The graphite oxide, H2O、NaOH、
The addition part by weight of sodium chloroacetate is：1:1000:40:45；
（2）Prepare Polyamidoamine Dendrimers-graphene
Ethylenediamine and methanol are added dropwise in the three-necked flask of nitrogen protection, magnetic agitation is uniform in ice-water bath；Add step
Suddenly（1）Obtained carboxylated graphene, then the methanol solution of methyl acrylate is added dropwise to, in 20 ~ 30 DEG C of reaction 6h stirred below；
Then, solvent methanol and excessive raw material propylene acid methyl esters are removed at 50 DEG C, obtains Polyamidoamine Dendrimers-graphite
Alkene；The ethylenediamine, methanol, methyl acrylate, the addition part by weight of carboxylated graphene are：1:3:10：1；
（3）The preparation of graphene anticorrosive paint
By step（2）Obtained parts by weight of Polyamidoamine Dendrimers-graphene 5, the parts by weight of titanium dioxide 5, the weight of talcum powder 10
Measure part, the parts by weight of different monooctyl ester 20,5 parts of aluminium triphosphate, 3 parts of Ludox, 1.55 parts of propane diols, the parts by weight of water 20 addition sand mill
Sanded treatment 120min, obtain graphene anticorrosive paint.
It is manufactured in the present embodiment a kind of by dendritic macromole carrying dispersed graphite alkene anticorrosive paint, its performance test such as table
Shown in 1.
Embodiment 2
A kind of to carry the scattered method for preparing graphene anticorrosive paint by dendritic macromole, concrete technology step is as follows：
（1）Carboxylated processing is same as Example 1；
（2）Prepare Polyamidoamine Dendrimers-graphene
Ethylenediamine and methanol are added dropwise in the three-necked flask of nitrogen protection, magnetic agitation is uniform in ice-water bath；Add step
Suddenly（1）Obtained carboxylated graphene, then the methanol solution of methyl acrylate is added dropwise to, in 20 ~ 30 DEG C of reactions stirred below
10h；Then, solvent methanol and excessive raw material propylene acid methyl esters are removed at 50 DEG C, obtain Polyamidoamine Dendrimers-
Graphene；The ethylenediamine, methanol, methyl acrylate, the addition part by weight of carboxylated graphene are：1:4:15：1；
（3）The preparation of graphene anticorrosive paint
By step（2）Obtained parts by weight of Polyamidoamine Dendrimers-graphene 10, the parts by weight of titanium dioxide 10, talcum powder 15
Parts by weight, the parts by weight of different monooctyl ester 30,10 parts of aluminium triphosphate, 5 parts of Ludox, 2.5 parts of propane diols, the parts by weight of water 30, which add, to be sanded
Machine sanded treatment 240min, obtains graphene anticorrosive paint.
It is manufactured in the present embodiment a kind of by dendritic macromole carrying dispersed graphite alkene anticorrosive paint, its performance test such as table
Shown in 1.
Embodiment 3
A kind of to carry the scattered method for preparing graphene anticorrosive paint by dendritic macromole, concrete technology step is as follows：
（1）Carboxylated processing is same as Example 1
（2）It is same as Example 2 to prepare Polyamidoamine Dendrimers-graphene
（3）The preparation of graphene anticorrosive paint
By step（2）Obtained parts by weight of Polyamidoamine Dendrimers-graphene 10, the parts by weight of titanium dioxide 5, talcum powder 10
Parts by weight, the parts by weight of different monooctyl ester 25,10 parts of aluminium triphosphate, 5 parts of Ludox, 2.5 parts of propane diols, the parts by weight of water 30, which add, to be sanded
Machine sanded treatment 120min, obtains graphene anticorrosive paint.
It is manufactured in the present embodiment a kind of by dendritic macromole carrying dispersed graphite alkene anticorrosive paint, its performance test such as table
Shown in 1.
Embodiment 4
A kind of to carry the scattered method for preparing graphene anticorrosive paint by dendritic macromole, concrete technology step is as follows：
（1）Carboxylated processing
72% concentrated sulfuric acid is put 0 ~ 3 DEG C is cooled in ice water tank, be placed in ice-water bath in there-necked flask and sequentially add graphite powder, NaNO3
With the concentrated sulfuric acid, 10 ~ 30min of mechanic whirl-nett reaction；Potassium permanganate is slowly added to, control there-necked flask interior reaction temperature is at 10 ~ 15 DEG C
Between, mechanic whirl-nett reaction 2h；Then there-necked flask heating water bath is slowly dropped into distilled water and H to 80 ~ 95 DEG C2O2, machinery stirs
Mix 120min；After solution colour is changed into glassy yellow from burgundy, filters, washed with 5% hydrochloric acid solution while hot；Centrifuge
And solution is washed to by weakly acidic pH with distillation, 80 DEG C are dried in vacuo to obtain graphite oxide；The graphite powder, 72% concentrated sulfuric acid, NaNO3、
Potassium permanganate, H2O2, distilled water addition part by weight be：1:45:0.7:5:2:90；
Graphite oxide is dispersed in water, 10 ~ 30min of ultrasonic disperse, into uniform aaerosol solution, adds NaOH and monoxone
Sodium, water bath sonicator 2h, then neutralized with dilute HCl solution, the hydroxyl on graphene oxide and epoxy radicals is converted into carboxyl；Spend from
Son is washed to neutrality, 50 ~ 80 DEG C of vacuum drying, obtains carboxylated graphene（CO-GOOH)；The graphite oxide, H2O、NaOH、
The addition part by weight of sodium chloroacetate is：1:1000:50:60；
（2）Prepare Polyamidoamine Dendrimers-graphene
Ethylenediamine and methanol are added dropwise in the three-necked flask of nitrogen protection, magnetic agitation is uniform in ice-water bath；Add step
Suddenly（1）Obtained carboxylated graphene, then the methanol solution of methyl acrylate is added dropwise to, in 20 ~ 30 DEG C of reactions stirred below
24h；Then, solvent methanol and excessive raw material propylene acid methyl esters are removed at 50 DEG C, obtain Polyamidoamine Dendrimers-
Graphene；The ethylenediamine, methanol, methyl acrylate, the addition part by weight of carboxylated graphene are：1:3:15：1；
（3）The preparation of graphene anticorrosive paint
By step（2）Obtained parts by weight of Polyamidoamine Dendrimers-graphene 10, the parts by weight of titanium dioxide 10, talcum powder
105 parts by weight, the parts by weight of different monooctyl ester 20, the parts by weight of aluminium triphosphate 10, the parts by weight of Ludox 5, the parts by weight of propane diols 1.5, water
20 parts by weight add sand mill 120 ~ 240min of sanded treatment, obtain graphene anticorrosive paint.
It is manufactured in the present embodiment a kind of by dendritic macromole carrying dispersed graphite alkene anticorrosive paint, its performance test such as table
Shown in 1.
Comparative example 1
A kind of method for preparing graphene anticorrosive paint, concrete technology step are as follows：
（1）Carboxylated processing
72% concentrated sulfuric acid is put 0 ~ 3 DEG C is cooled in ice water tank, be placed in ice-water bath in there-necked flask and sequentially add graphite powder, NaNO3
With the concentrated sulfuric acid, 10 ~ 30min of mechanic whirl-nett reaction；Potassium permanganate is slowly added to, control there-necked flask interior reaction temperature is at 10 ~ 15 DEG C
Between, mechanic whirl-nett reaction 2h；Then there-necked flask heating water bath is slowly dropped into distilled water and H to 80 ~ 95 DEG C2O2, machinery stirs
Mix 120min；After solution colour is changed into glassy yellow from burgundy, filters, washed with 5% hydrochloric acid solution while hot；Centrifuge
And solution is washed to by weakly acidic pH with distillation, 80 DEG C are dried in vacuo to obtain graphite oxide；The graphite powder, 72% concentrated sulfuric acid, NaNO3、
Potassium permanganate, H2O2, distilled water addition part by weight be：1:45:0.7:5:2:90；
Graphite oxide is dispersed in water, 10 ~ 30min of ultrasonic disperse, into uniform aaerosol solution, adds NaOH and monoxone
Sodium, water bath sonicator 2h, then neutralized with dilute HCl solution, the hydroxyl on graphene oxide and epoxy radicals is converted into carboxyl；Spend from
Son is washed to neutrality, 50 ~ 80 DEG C of vacuum drying, obtains carboxylated graphene（CO-GOOH)；The graphite oxide, H2O、NaOH、
The addition part by weight of sodium chloroacetate is：1:1000:50:60；
（2）The preparation of graphene anticorrosive paint
By step（1）Obtained parts by weight of carboxylated graphene 10, the parts by weight of titanium dioxide 10, the parts by weight of talcum powder 105, different monooctyl ester
20 parts by weight, the parts by weight of aluminium triphosphate 10, the parts by weight of Ludox 5, the parts by weight of propane diols 1.5, the parts by weight of water 20, which add, to be sanded
Machine 120 ~ 240min of sanded treatment, obtains graphene anticorrosive paint.
The anticorrosive paint that embodiment 1-4, comparative example 1 are obtained applies test, is analyzed, as shown in table 1.
Table 1：
As seen from Table 1, a kind of graphene anticorrosive paint by the scattered preparation of dendritic macromole carrying has good resist
Acid and alkali corrosion, salt fog resistance burn into is water-fast, and heat resistance is good.
Claims (2)
1. a kind of carry the scattered method for preparing graphene anticorrosive paint by dendritic macromole, concrete technology step is as follows：
（1）Carboxylated processing
72% concentrated sulfuric acid is put 0 ~ 3 DEG C is cooled in ice water tank, be placed in ice-water bath in there-necked flask and sequentially add graphite powder, NaNO3
With the concentrated sulfuric acid, 10 ~ 30min of mechanic whirl-nett reaction；Potassium permanganate is slowly added to, control there-necked flask interior reaction temperature is at 10 ~ 15 DEG C
Between, 1 ~ 2h of mechanic whirl-nett reaction；Then there-necked flask heating water bath is slowly dropped into distilled water and H to 80 ~ 95 DEG C2O2, machinery
Stir 30 ~ 120min；After solution colour is changed into glassy yellow from burgundy, filters, washed with 5% hydrochloric acid solution while hot；Centrifugation
Separate and be washed to solution by weakly acidic pH with distillation, 50 ~ 80 DEG C are dried in vacuo to obtain graphite oxide；The graphite powder, 72% dense sulphur
Acid, NaNO3, potassium permanganate, H2O2, distilled water addition part by weight be：1:35~45:0.4~0.7:3~5:2~5:90~150；
Graphite oxide is dispersed in water, 10 ~ 30min of ultrasonic disperse, into uniform aaerosol solution, adds NaOH and monoxone
Sodium, 1 ~ 2h of water bath sonicator, then neutralized with dilute HCl solution, the hydroxyl on graphene oxide and epoxy radicals is converted into carboxyl；Spend
Ion is washed to neutrality, 50 ~ 80 DEG C of vacuum drying, obtains carboxylated graphene（CO-GOOH)；The graphite oxide, H2O、
NaOH, the addition part by weight of sodium chloroacetate are：1:1000:40~50:45~60；
（2）Prepare Polyamidoamine Dendrimers-graphene
Ethylenediamine and methanol are added dropwise in the three-necked flask of nitrogen protection, magnetic agitation is uniform in ice-water bath；Add step
Suddenly（1）Obtained carboxylated graphene, then be added dropwise to the methanol solution of methyl acrylate, 20 ~ 30 DEG C of reactions 6 stirred below ~
24h；Then, solvent methanol and excessive raw material propylene acid methyl esters are removed at 50 DEG C, obtain Polyamidoamine Dendrimers-
Graphene；
（3）The preparation of graphene anticorrosive paint
By step（2）Obtained Polyamidoamine Dendrimers-graphene 3-10 parts by weight, titanium dioxide 5-10 parts by weight, talcum
Powder 10-15 parts by weight, different monooctyl ester 20-30 parts by weight, aluminium triphosphate 5-10 parts, Ludox 3-5 parts, 1.5 ~ 2.5 parts of propane diols,
Water 20-30 parts by weight add sand mill 120 ~ 240min of sanded treatment, obtain graphene anticorrosive paint.
2. a kind of according to claim 1 carry the scattered method for preparing graphene anticorrosive paint by dendritic macromole, its
It is characterised by：Step（2）The ethylenediamine, methanol, methyl acrylate, the addition part by weight of carboxylated graphene are：1:3~
4:10~15：1.
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