CN109749569A - Two-component graphene anticorrosive paint and preparation method thereof - Google Patents
Two-component graphene anticorrosive paint and preparation method thereof Download PDFInfo
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Abstract
The present invention provides a kind of two-component graphene anticorrosive paints, including component A and B component, wherein by the total weight of the component A be 100% in terms of, following components including following weight percentage: 0.2~2wt% of graphene；10~30wt% of epoxy resin；20~50wt% of zinc powder；0.5~3wt% of dispersing agent；0.5~4wt% of anti-settling agent；0.2~1wt% of defoaming agent；0.2~2wt% of silane coupling agent；0.3~2wt% of thickener；Pigments and fillers 10-20wt%；First 10~20wt% of solvent；Wherein, the zinc powder is the mixture of spherical zinc powder and scale zinc powder；It is following components including following weight percentage: 50~75wt% of curing agent in terms of 100% by the total weight of the B component；1~5wt% of curing accelerator；Second 20~50wt% of solvent.
Description
Technical field
The invention belongs to anticorrosive paint technical field more particularly to a kind of two-component graphene anticorrosive paint and its systems
Preparation Method.
Background technique
Epoxy zinc-enriched paint is a kind of anticorrosive paint of excellent anti-corrosion performance, is widely used in each of industrial antisepsis
A field.The anticorrosion mechanism of epoxy zinc-enriched paint is mainly the electro-chemical protection of zinc, in general, zinc-rich paint is playing yin
When the protective effect of pole, a large amount of zinc fine particles must be contained in dry film, present in an amount at least sufficient to make between zinc powder and zinc powder and ground it
Between reach point contact degree.But zinc content is excessively high in coating, easily leads to coated porous, and adhesive force, flexibility and shock resistance are strong
Degree decline.
On the other hand, epoxy zinc-enriched paint with basestock density differs larger due to zinc powder, is very easy to sedimentation, to construction and
Performance brings very negative impact.In order to reduce sedimentation, thixotropic agent, such as fumed silica, organobentonite are generallyd use
As anti-settling agent.Such thixotropic agent be by increase paint viscosity come it is anti-settling, as time goes by, result of prevention decline, and
Paint viscosity is larger, is difficult to prepare high solid coating.
Summary of the invention
The purpose of the present invention is to provide a kind of two-component graphene anticorrosive paints and preparation method thereof, it is intended to solve zinc
When powder prepares anticorrosive paint, since zinc content height causes epoxy zinc-enriched paint to be easy, sedimentation, coating wet adhesion is low asks
Topic.
The invention is realized in this way a kind of two-component graphene anticorrosive paint, including component A and B component, wherein
It is following components including following weight percentage in terms of 100% by the total weight of the component A:
Wherein, the zinc powder is the mixture of spherical zinc powder and scale zinc powder；
It is following components including following weight percentage in terms of 100% by the total weight of the B component:
50~75wt% of curing agent；
1~5wt% of curing accelerator；
Second 20~50wt% of solvent.
And a kind of preparation method of two-component graphene anticorrosive paint, comprising the following steps:
(1) component A is prepared:
The graphene of component A formula ratio, dispersing agent, silane coupling agent, the first solvent are placed in stirring container, with high speed
Dispersion machine stirs under the revolving speed of 500~2000r/min, obtains graphene dispersing solution；
Epoxy resin is added in the graphene dispersing solution, the revolving speed of 500~2000r/min continues to stir, and obtains stone
Black olefine resin slurry；
Anti-settling agent, defoaming agent, thickener, zinc powder, pigments and fillers are sequentially added in the graphene resin slurry, are kept
The revolving speed of 500~2000r/min continues to stir, and obtains component A dispersed paste；
The component A dispersed paste is placed in sand mill and is ground, control discharge fineness is 20-50um, is filtered
To component A；
(2) B component is prepared:
Curing agent, the second solvent are placed in stirring container, are dispersed with stirring uniformly, revolving speed is 500~2000r/min, is obtained
To solidification agent dispersing liquid；
The solidification agent dispersing liquid is added in curing accelerator, keeps revolving speed to continue to be dispersed with stirring, obtains B component.
Two-component graphene anticorrosive paint provided by the invention, including can film-forming component A and contain curing agent
B component.In the component A, a large amount of zinc powders are substituted with a small amount of graphene, graphene and zinc powder overlap to form three-dimensional conductive mesh
Network, coating have excellent electrochemical anti-corrosive performance.Importantly, the present invention is made using scale zinc powder and spherical zinc powder collocation
With scale zinc powder specific surface area is larger, there is good resistance to settling energy in coating, and the addition of scale zinc powder can significantly improve painting
The resistance to settling of material substantially increases the storage stability of zinc-rich paint.Meanwhile silane coupling agent is introduced in component A, into one
Step improves the storage stability and wet adhesion of coating.The two-component graphene anticorrosive paint has excellent anti-corrosive properties
Energy, water resistance, can be used for the heavy antisepsis fields such as ship, ocean process, chemical industry equipment, industrial storage tank, extend the military service of steel construction
Service life.In addition, the two-component graphene anticorrosive paint with inventive formulation has, solid content is high, environmental-friendly, paint film is thin,
The good advantage of flexibility, impact resistance.
Two-component graphene anticorrosive paint provided by the invention, coating component A are divided by successively mixing each raw material
It dissipates and is obtained after grinding, for coating B component by obtaining after each raw material successively to be mixed to dispersion, preparation method is simple and easy to control.
Detailed description of the invention
Fig. 1 is provided in an embodiment of the present invention with silane coupling agent compounding polymeric carboxylic salt dispersing agent preparation 1.5%
Graphene resin dispersion liquid, the dispersion liquid effect picture after stablizing storage 2 months；
Fig. 2 is that 105 days 2520h salt spray resistances of two-component graphene anticorrosive paint that the embodiment of the present invention 1 provides are surveyed
Test result figure；
Fig. 3 is that 105 days 2520h salt spray resistances of two-component graphene anticorrosive paint that the embodiment of the present invention 2 provides are surveyed
Test result figure；
Fig. 4 is that 105 days 2520h salt spray resistances of two-component graphene anticorrosive paint that the embodiment of the present invention 3 provides are surveyed
Test result figure.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention is not intended to limit the present invention.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more of the features.In the description of the present invention,
The meaning of " plurality " is two or more, unless otherwise specifically defined.
The embodiment of the invention provides a kind of two-component graphene anticorrosive paints, including component A and B component, wherein with
The total weight of the component A is 100% meter, following components including following weight percentage:
Wherein, the zinc powder is the mixture of spherical zinc powder and scale zinc powder；
It is following components including following weight percentage in terms of 100% by the total weight of the B component:
50~75wt% of curing agent；
1~5wt% of curing accelerator；
Second 20~50wt% of solvent.
Two-component graphene anticorrosive paint provided in an embodiment of the present invention, including can film-forming component A and contain
The B component of curing agent.In the component A, a large amount of zinc powders are substituted with a small amount of graphene, graphene is overlapped with zinc powder to be formed solid and lead
Electric network, coating have excellent electrochemical anti-corrosive performance.Importantly, the embodiment of the present invention is using scale zinc powder and spherical
Zinc powder collocation uses, and scale zinc powder specific surface area is larger, has good resistance to settling energy in coating, the addition of scale zinc powder can
The resistance to settling for significantly improving coating substantially increases the storage stability of zinc-rich paint.Meanwhile silane is introduced in component A
Coupling agent further improves the storage stability and wet adhesion of coating.The two-component graphene anticorrosive paint has
Excellent antiseptic property, water resistance, can be used for the heavy antisepsis fields such as ship, ocean process, chemical industry equipment, industrial storage tank, extend
The service life of steel construction.In addition, the two-component graphene anticorrosive paint with inventive formulation has solid content height, environment
Advantage friendly, paint film is thin, flexibility, impact resistance are good.
Specifically, the component A is used for film-forming.Wherein, the zinc powder is conducive to improve coating as matrix component
Point contact degree between substrate, but since excessive zinc powder is easy to cause coated porous, it reduces adhesive force, flexibility and resists
Impact strength.In the embodiment of the present invention, zinc powder is substituted using part graphene, reduces the dosage of zinc powder；Meanwhile with a small amount of graphite
Alkene substitutes a large amount of zinc powders, and graphene and zinc powder overlap to form three-dimensional conductive network, and coating has excellent electrochemical anti-corrosive performance.
Specifically, the dosage of zinc powder described in the embodiment of the present invention be the component A gross weight 20~50wt%, concretely 20wt%,
25wt%, 30wt%, 35wt%, 40wt%, 45wt%, 50wt%.Zinc powder dosage in the range makes with graphene collocation
With can either guarantee contact of the zinc powder with zinc powder, zinc powder with graphene, zinc powder with substrate in coating, guarantee good electrochemistry
Antisepsis, it is good between substrate to contact, and can avoid because of the excessively high bring coated porous of zinc content, adhesive force is low,
The problem of flexibility and impact strength deficiency.
Since zinc powder and base-material such as epoxy resin density difference are larger, coating is caused to be easy the sedimentation zinc powder.Further
, the zinc powder of the embodiment of the present invention is the mixture of spherical zinc powder and scale zinc powder.Since scale zinc powder specific surface area is larger,
There is good resistance to settling energy in coating, scale zinc powder and spherical zinc powder collocation use, and substantially increase the storage of zinc-rich paint
Stability.It further, is in terms of 100% by the total weight of the zinc powder, the weight percentage of the scale zinc powder is 0-
80%, and be not 0.Specifically, the weight percentage of the scale zinc powder can for 5%, 10%, 15%, 20%, 25%,
30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%.Preferably, the scale zinc powder
Weight percentage is 5-35%.
The embodiment of the present invention utilizes the good electric conductivity of graphene, lamellar structure, and graphene and zinc powder overlap to form conduction
Access substantially increases the utilization rate of zinc powder, i.e., a small amount of graphene can replace a large amount of zinc powder, while enhance the electricity of coating
Chemical preservation effect.The electrochemical anti-corrosive of graphene combination zinc powder acts on, and can prepare favorable anti-corrosion effect, high solid, energy conservation
The graphene zinc powder anticorrosive paint of environmental protection.Graphene described in the embodiment of the present invention can be single-layer graphene, or more
Layer graphene, and the graphene preferably comprises the single-layer or multi-layer graphene of surface functional group, and the surface functional group is
Polar group.Specifically, the polar group is preferably oxygen-containing functional group.In the embodiment of the present invention, the dosage of the graphene
For 0.2~2wt% of the component A gross weight, if the dosage of the graphene is excessive, being easy to reunite influences dispersibility.
In the two-component graphene anticorrosive paint, conventional epoxy resin is may be selected in the epoxy resin, preferably
Bisphenol A type epoxy resin E44.The epoxy resin has many hydroxyls and ehter bond, has good cohesive force to substrate, but when paint
After film immerses water, the absorption between polar group in original metal surface active site and paint film, due to the intervention of hydrone,
Adhesive force reduces, i.e., the wet adhesion of paint film reduces, antiseptic property decline.In view of this, the embodiment of the present invention introduces silane
Coupling agent, silane coupling agent hydrolysis generate silanol hydroxyl, on the one hand can be with the hydroxyl of metal substrate surface (or the water on surface
Layer) hydrogen bond is formed, paint film wet adhesion can be significantly improved；On the other hand, the silane coupling agent is organic-philic epoxy terminated
Group can react with the amide groups of curing agent, form inierpeneirating network structure, greatly improve the crosslink density and consistency of paint film,
To enhance the cohesive force and shielding of paint film, corrosion resistance is improved.Silane coupling agent is added in coating, is improving the wet attachment of paint film
While power, its Corrosion Protection can be also improved.The silane coupling agent is preferably epoxy silane coupling, thus avoid with
It is chemically reacted between epoxy resin, specific is preferably KH560.In the embodiment of the present invention, the weight of the silane coupling agent
Measuring percentage composition is 0.2~2%, concretely 0.2%, 0.5%, 0.8%, 1.0%, 1.2%, 1.5%, 1.8%, 2.0%.
In the embodiment of the present invention, in order to improve the dispersion performance of the two-component graphene anticorrosive paint, and then improve
Storage stability is added to dispersant component.Preferably, the dispersing agent is macromolecule dispersing agent, it is further preferred that described
Dispersing agent is carboxylate macromolecule dispersing agent.The embodiment of the present invention is with polymeric carboxylic salt dispersing agent built up silane couple shape
At amphipathic dispersing agent, carrys out dispersed graphite alkene epoxy resin dicyandiamide solution, improve graphene in matrix resin and solvent
Compatibility makes graphene stable dispersion in organic solvent and matrix resin, has well solved the group of graphene nano powder
It is poly-, be conducive to the storage stability for improving coating.In one embodiment, with silane coupling agent compounding polymeric carboxylic salt point
Powder prepares 1.5% graphene resin dispersion liquid (weight percentage of graphene is 1.5% in component A), stablizes storage 2
After month, no graphene settles firmly, and dispersion liquid is as shown in Figure 1.In the embodiment of the present invention, the weight percentage of the dispersing agent is
0.5~3%, concretely 0.5%, 0.8%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%.
In the embodiment of the present invention, it is preferred that the pigments and fillers are talcum powder, barium sulfate, titanium dioxide, feldspar powder, compound phosphorus
Two or more combination of sour zinc, mica powder, aluminium triphosphate.Preferably, the anti-settling agent is polyamide wax, poly- second
At least one of alkene wax.Preferably, the thickener is at least one of fumed silica, organobentonite.It is preferred that
, first solvent is the mixed solution of n-butanol and dimethylbenzene, not only facilitates the dissolubility for improving component A material system
Can, advantageously form stable homogeneous coating system；And there is suitable evaporation rate when constructing film forming, be conducive to improve
Workability and filming performance.It is further preferred that in first solvent, the weight ratio of the n-butanol and the dimethylbenzene
For 4:1.
In the component B, it is preferred that the curing agent be polyamide 6 50, polyamide 125, in modified amine curing agent extremely
Few one kind.Preferably, the curing accelerator is one of 3 diethyl aminopropylamine, DMP-30.Preferably, described second is molten
Agent is identical as the type of solvent of first solvent, is the mixed solution of n-butanol and dimethylbenzene, not only facilitates raising component A
The solubility property of material system advantageously forms stable homogeneous coating system；And has when constructing film forming and suitably wave
Speed is sent out, is conducive to improve workability and filming performance.It is further preferred that in second solvent, the n-butanol and
The weight ratio of the dimethylbenzene is 4:1, certainly, without being limited thereto.Herein, it should be appreciated that second solvent and described the
The type of solvent of one solvent is identical, does not indicate that the percentage composition of in the mixed solvent solvent is identical.
And the embodiment of the invention also provides a kind of preparation methods of two-component graphene anticorrosive paint, including with
Lower step:
(1) component A is prepared:
(11) graphene of component A formula ratio, dispersing agent, silane coupling agent, the first solvent are placed in stirring container, are used
High speed disperser stirs under the revolving speed of 500~2000r/min, obtains graphene dispersing solution.
By the step, silane coupling agent compounds to form amphipathic dispersing agent with macromolecule dispersing agent, can be by graphene
It is effectively dispersed in the first solvent, is beneficial to prevent the reunion of graphene nano powder.Preferably, mixing time 10-
30min。
(12) be added epoxy resin in the graphene dispersing solution, the revolving speed of 500~2000r/min continue stirring 10~
30min obtains graphene resin slurry.
In the step, under the synergistic effect of silane coupling agent and macromolecule dispersing agent, graphene is improved in matrix tree
Compatibility in rouge and solvent, enables graphene to be stably dispersed in coating system.
(13) anti-settling agent, defoaming agent, thickener, zinc powder, pigments and fillers are sequentially added in the graphene resin slurry, are protected
The revolving speed for holding 500~2000r/min continues 15~45min of stirring, obtains component A dispersed paste.It, will by the step process
Each component effectively mixes, and fully dispersed uniform.
(14) the component A dispersed paste is placed in sand mill and is ground, control discharge fineness is 20-50um, mistake
Filter processing, thus obtains the uniform component A of fineness.
(2) B component is prepared:
(21) curing agent, the second solvent are placed in stirring container, are dispersed with stirring uniformly, revolving speed is 500~2000r/
Min obtains solidification agent dispersing liquid.Preferably, dispersed using electronic dispersion machine, be conducive to improve dispersion performance.It is preferred that stirring
Mixing the time is 10~30min.
(22) the solidification agent dispersing liquid is added in curing accelerator, keeps revolving speed to continue to be dispersed with stirring, obtains B component.
Preferably, jitter time is 20~60min.
It should be understood that the preparation of component A and B component can first prepare A group without successive point in above-mentioned steps
Point, B component can also be first prepared, can be prepared simultaneously with A, B component.Before use, A, B component are mixed.
Two-component graphene anticorrosive paint provided in an embodiment of the present invention, by each raw material are successively mixed dispersion and
It is obtained after grinding, for coating B component by obtaining after each raw material successively to be mixed to dispersion, preparation method is simple and easy to control.
It is illustrated combined with specific embodiments below.
Embodiment 1
A kind of two-component graphene zinc powder anticorrosive paint, the component A include following raw material: graphene by weight
1.3 parts, 12 parts of scale zinc powder, 18 parts of spherical zinc powder, 24 parts of epoxy resin, 1 part of dispersing agent, 1.2 parts of polyamide wax, defoaming agent
0.5 part, 3 parts of titanium dioxide, 5 parts of talcum powder, 12 parts of composite zinc phosphate, 0.4 part of organobentonite, 0.4 part of fumed silica, the
One 21.2 parts of solvent；The B component, by weight include following raw material: 50 66 parts of polyamide 6,2 parts of DMP-30, second is molten
32 parts of agent.
The preparation method of the two-component graphene zinc powder anticorrosive paint, comprising the following steps:
(1) component A the preparation method is as follows:
(11) graphene of component A formula ratio, dispersing agent, silane coupling agent, the first solvent are placed in stirring container, are used
Electronic dispersion machine is stirred, revolving speed 1800r/min, and mixing time 15min obtains graphene dispersing solution.
(12) epoxy resin of formula ratio is added, continues to stir, revolving speed 1800r/min, mixing time 20min obtains stone
Black olefine resin slurry.
(13) anti-settling agent, defoaming agent, thickener, the zinc powder, other pigments and fillers for sequentially adding formula ratio, continue to stir, and turn
Fast 1500r/min, mixing time 40min obtain component A dispersed paste.
(14) the component A dispersed paste that step (13) obtains is placed in sand mill and is ground, fineness 20-50um,
Graphene zinc powder coating component A is obtained by filtration.
(2) B component the preparation method is as follows:
(21) polyamide of B component formula ratio or modified amine curing agent, the second solvent are placed in stirring container,
It is uniformly dispersed with electronic dispersion machine, revolving speed 1500r/min, mixing time 20min.
(22) curing accelerator of B component formula ratio is added in the stirring container in step (21) again, continues to disperse, turned
Speed is 1500r/min, mixing time 45min, obtains graphene zinc powder coating B component.
Embodiment 2
A kind of two-component graphene zinc powder anticorrosive paint, the component A include following raw material: graphene 1 by weight
Part, 16 parts of scale zinc powder, 20 parts of spherical zinc powder, 24 parts of epoxy resin, 0.8 part of dispersing agent, 1 part of polyamide wax, defoaming agent 0.5
Part, 4 parts of talcum powder, 6 parts of composite zinc phosphate, 6 parts of aluminium triphosphate, 0.5 part of organobentonite, the first 20.2 parts of solvent；The B
Component includes following raw material by weight: 125 66 parts of polyamide, 2 parts of DMP-30, and the second 32 parts of solvent.
The preparation method is the same as that of Example 1 for the two-component graphene zinc powder anticorrosive paint.
Embodiment 3
A kind of two-component graphene zinc powder anticorrosive paint, the component A include following raw material: graphene by weight
0.8 part, 14 parts of scale zinc powder, 18 parts of spherical zinc powder, 24 parts of epoxy resin, 0.6 part of dispersing agent, 1 part of polyamide wax, defoaming agent
0.5 part, 5 parts of talcum powder, 5 parts of titanium dioxide, 10 parts of aluminium triphosphate, 0.5 part of organobentonite, 20.8 parts of solvent；The B group
Point, it by weight include following raw material: 125 66 parts of polyamide, 2 parts of 3- diethyl amino propylamine, 32 parts of solvent.
The preparation method is the same as that of Example 1 for the two-component graphene zinc powder anticorrosive paint.
Prepared coating component A and B component are mixed to get anticorrosive paint by weight 10:1 using preceding, sprayed with air
Coating method sprays on Q235 cold-rolled steel sheet, carries out coating performance test.
Performance test
The two-component graphene zinc powder anticorrosive paint that Examples 1 to 3 is provided, film-forming are tested for the property, and are surveyed
Method for testing is as shown in table 1, and the performance test results are as shown in table 2.
Table 1
Table 2
Properties test result shows graphene zinc powder anticorrosive paint provided in an embodiment of the present invention, with about 1%
Graphene replaces 50% zinc powder, has both greatly reduced the use of metallic zinc, while having anti-corrosion more superior than zinc-rich paint
Performance.It is used with scale zinc powder and spherical zinc powder collocation, enhances the piece oblique cut grafting of graphene and zinc powder, zinc powder and zinc powder, make to apply
The electric conductivity of layer is further increased with cathodic protection performance, and the salt spray resistance of graphene zinc powder anticorrosive paint reaches
2500h, test results are shown in figure 2, much higher than the standard of zinc rich primer.
Scale zinc powder large specific surface area has good resistance to settling energy, replaces part spherical zinc powder with scale zinc powder, adds
Fast sedimentation experiment the result shows that, the storage stability of coating was up to 1 year or more.
Silane coupling agent is added in coating component A, coupling agent hydrolysis generates silanol hydroxyl, can be with metal substrate surface
Hydroxyl (or the water layer on surface) forms hydrogen bond, and film and base metal also have very high adhesive force in this way under hygrometric state condition.It is dry
Coating adhesion reaches 22Mpa, and coating takes out after water-fast experiment 1 month, is drawn with 3M adhesive tape is viscous, coating is not fallen off, and coating has
Very high wet adhesion.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of two-component graphene anticorrosive paint, which is characterized in that including component A and B component, wherein with the component A
Total weight be 100% meter, following components including following weight percentage:
Wherein, the zinc powder is the mixture of spherical zinc powder and scale zinc powder；
It is following components including following weight percentage in terms of 100% by the total weight of the B component:
50~75wt% of curing agent；
1~5wt% of curing accelerator；
Second 20~50wt% of solvent.
2. two-component graphene anticorrosive paint as described in claim 1, which is characterized in that the total weight with the zinc powder is
100% meter, the weight percentage of the scale zinc powder are 0-80%, and are not 0.
3. two-component graphene anticorrosive paint as described in claim 1, which is characterized in that the dispersing agent is that carboxylate is high
Dispersal agent molecule.
4. two-component graphene anticorrosive paint as described in any one of claims 1-3, which is characterized in that the graphene contains
There is the single-layer or multi-layer graphene of surface functional group, and the surface functional group is polar group.
5. two-component graphene anticorrosive paint as described in any one of claims 1-3, which is characterized in that described silane coupled
Agent is epoxy silane coupling.
6. two-component graphene anticorrosive paint as described in any one of claims 1-3, which is characterized in that the curing agent is
At least one of polyamide 6 50, polyamide 125, modified amine curing agent；And/or
The curing accelerator is one of 3 diethyl aminopropylamine, DMP-30.
7. two-component graphene anticorrosive paint as described in any one of claims 1-3, which is characterized in that the pigments and fillers are
Two or more group of talcum powder, barium sulfate, titanium dioxide, feldspar powder, composite zinc phosphate, mica powder, aluminium triphosphate
It closes；And/or
The anti-settling agent is at least one of polyamide wax, polyethylene wax；And/or
The thickener is at least one of fumed silica, organobentonite.
8. two-component graphene anticorrosive paint as described in any one of claims 1-3, which is characterized in that first solvent
It is identical with the type of solvent of second solvent, it is the mixed solution of n-butanol and dimethylbenzene.
9. two-component graphene anticorrosive paint as claimed in claim 8, which is characterized in that the n-butanol and the diformazan
The weight ratio of benzene is 4:1.
10. a kind of preparation method of the two-component graphene anticorrosive paint as described in claim any one of 1-9, feature exist
In, comprising the following steps:
(1) component A is prepared:
The graphene of component A formula ratio, dispersing agent, silane coupling agent, the first solvent are placed in stirring container, high speed dispersion is used
Machine stirs under the revolving speed of 500~2000r/min, obtains graphene dispersing solution；
Epoxy resin is added in the graphene dispersing solution, the revolving speed of 500~2000r/min continues to stir, and obtains graphene
Resin slurry；
Sequentially add anti-settling agent, defoaming agent, thickener, zinc powder, pigments and fillers in the graphene resin slurry, keep 500~
The revolving speed of 2000r/min continues to stir, and obtains component A dispersed paste；
The component A dispersed paste is placed in sand mill and is ground, control discharge fineness is 20-50um, and A group is obtained by filtration
Point；
(2) B component is prepared:
Curing agent, the second solvent are placed in stirring container, are dispersed with stirring uniformly, revolving speed is 500~2000r/min, consolidate
Agent dispersion liquid；
The solidification agent dispersing liquid is added in curing accelerator, keeps revolving speed to continue to be dispersed with stirring, obtains B component.
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| CN113025101A (en) * | 2021-03-16 | 2021-06-25 | 东莞金坤新材料股份有限公司 | Anticorrosive heat-dissipation graphene coating |
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| CN113355007A (en) * | 2021-06-22 | 2021-09-07 | 江苏冠军科技集团股份有限公司 | Graphene type water-based epoxy zinc-rich coating and preparation method thereof |
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| CN116144247A (en) * | 2023-02-23 | 2023-05-23 | 广州特种承压设备检测研究院 | Graphene/nano-iron composite modified epoxy resin anti-corrosion coating material and preparation method thereof |
| CN115975481A (en) * | 2023-03-21 | 2023-04-18 | 暨南大学 | Epoxy resin anticorrosive paint and preparation method thereof |
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Application publication date: 20190514 |