CN110128910A - Anticorrosive paint and preparation method thereof - Google Patents
Anticorrosive paint and preparation method thereof Download PDFInfo
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- CN110128910A CN110128910A CN201910384006.6A CN201910384006A CN110128910A CN 110128910 A CN110128910 A CN 110128910A CN 201910384006 A CN201910384006 A CN 201910384006A CN 110128910 A CN110128910 A CN 110128910A
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- 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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/45—Anti-settling agents
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/80—Processes for incorporating ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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Abstract
The present invention relates to a kind of anticorrosive paints and preparation method thereof, according to parts by weight, raw material includes following components to the anticorrosive paint: 0.3 part -1.2 parts of graphene powder, 30 parts -80 parts of zinc powder, 13 parts -25 parts of propylene glycol monomethyl ether, 13 parts -16 parts of aqueous epoxy resin curing agent, 13 parts -25 parts of butyl glycol ether, 30 parts -80 parts of aqueous epoxy resins, 0.5 part -0.7 part of substrate wetting agents；The piece diameter size of the graphene powder is 4-7 μm；The mesh number of the zinc powder is 3000-5000 mesh.According to specific proportion, a kind of anticorrosive paint with good antiseptic property, stability can be obtained in graphene powder, zinc powder, propylene glycol monomethyl ether, aqueous epoxy resin curing agent, butanediol ether, aqueous epoxy resins, substrate wetting agents by the present invention.
Description
Technical field
The present invention relates to paint fields, more particularly to a kind of anticorrosive paint and preparation method thereof.
Background technique
Corrosion is metal material common problem.According to statistics, China loses about 1.2 ten thousand as caused by corrosion every year
Hundred million yuan, account for 3% of GDP or so.In addition, the corrosion of metal material is also possible to lead to its performance failure, it is taken by surprise to induce
Catastrophic failure, bring and seriously affect to the production and living of the people.Therefore, metal material anticorrosion has been studied increasingly
Attention by the world community including China.Currently, organic coating is most in the measure of numerous anticorrosive metals
For one of means economically and efficiently.Wherein, organic zinc-rich coatings can not only provide physical barriers effect to metallic matrix, and
The sacrificial anode effect that conventional coating does not have also is provided for metallic matrix, and since its is easy to operate, anti-corrosion effect is excellent
And the advantages that high financial profit, it is widely applied in heavy anticorrosive field.
In order to guarantee that organic zinc-rich coatings can provide effective sacrificial anode effect, between zinc fine particles must be realized
And the electron-transport circuit between metallic matrix, this means that, containing a large amount of zinc fine particles in coating, the dry film of coating contains
Zinc amount is often as high as 80wt%-90wt%.However, the zinc powder of high-content, high relative density easily settles in liquid coating
Phenomenon, a large amount of zinc powders are deposited on bottom, so that stirring becomes difficult in industrial construction.In addition, zinc powder is deposited on bottom, make
It is layered at coating, will cause quality and be abnormal.Conventional insulated type zinc powder anti-settling agent electric conductivity is poor, although can effectively prevent
Only settle to zinc powder, but the electro-contact effect between would detract from zinc fine particles, reduce the sacrificial anode effect of zinc powder.
In recent years, the preparation there are many research by graphene applied to anticorrosive paint.But as a kind of nano material,
Bad dispersibility of the graphene in water and organic solvent, compatibility is also poor, and graphene is easy to appear sedimentation, group in coating
Poly-, the stability for eventually resulting in coating is poor, and performance is bad.
Summary of the invention
Based on this, the object of the present invention is to provide a kind of anticorrosive paint, it is with good stability can, antiseptic property.
Specific technical solution is as follows:
The present invention provides a kind of anticorrosive paints, and according to parts by weight, raw material includes following components:
The piece diameter size of the graphene powder is 4-7 μm；
The mesh number of the zinc powder is 3000-5000 mesh.
The present invention also provides a kind of preparation methods of above-mentioned anticorrosive paint, comprising the following steps:
(1) preparation of component A: propylene glycol monomethyl ether, aqueous epoxy resin curing agent, graphene powder are mixed, 2500r/
Min-3500r/min is uniformly dispersed；Zinc powder is added and butyl glycol ether, 4000r/min-6000r/min are uniformly dispersed；
(2) preparation of B component: aqueous epoxy resins and substrate wetting agents are mixed, 500r/min-1000r/min dispersion
Uniformly；
(3) component A and B component are mixed, 500r/min-1000r/min is uniformly dispersed, and obtains anticorrosive paint.
Compared with prior art, the invention has the following advantages:
The present invention is by graphene powder, zinc powder, propylene glycol monomethyl ether, aqueous epoxy resin curing agent, butanediol ether, aqueous
Epoxy resin, substrate wetting agents can be obtained a kind of with good antiseptic property, stability, machinery according to specific proportion
The anticorrosive paint of performance.Graphene is by sp2Bi-dimensional cellular shape crystal structure made of the carbon atom close-packed arrays of hydridization, it is gathered around
There are biggish specific surface area, good electric conductivity and permeability resistance.In the present invention, big by the piece diameter of graphene powder
The graphene of cooperation between small and zinc powder mesh number size, two-dimensional nano sheet structure is layering in coating, interts
It is incorporated in the hole of coating network structure, forms the conductive network structure of even compact, in coating storage and resin film forming
Baffle as zinc powder decline in the process is effectively prevented zinc powder sinking, the dispersion for keeping zinc powder stable in coating.In addition,
In the present invention, by selecting propylene glycol monomethyl ether and butyl glycol ether as paint solvent, resin plastic flowing and elasticity is promoted to become
Shape promotes the film forming of resin.
The preparation method of anticorrosive paint of the invention, raw material are simple and easy to get.By with propylene glycol monomethyl ether, aqueous epoxy resins
Curing agent and graphene powder enable graphene film uniformly to intert and are integrated to water-base epoxy by high speed stirring shear action
In resin curing agent, so that graphene is not reunited, reach evenly dispersed ground effect.Zinc powder and butyl glycol ether are added,
High speed shear is uniformly mixed graphene and zinc powder, disperses zinc powder uniformly, does not precipitate.Further by with mix
Good anti-of good antiseptic property, good mechanical property, stability has been prepared in the aqueous epoxy resins mixing of substrate wetting agents
Rotten coating.Preparation method condition of the invention is simple, easy to operate.
Detailed description of the invention
Fig. 1 is the Raman spectrogram of graphene used in embodiment 1；
Fig. 2 is the static 336h photo of component A prepared by embodiment 1 and comparative example 1；
Fig. 3 is the section the SEM piece of corrosion-inhibiting coating prepared by comparative example 1；
Fig. 4 is the section the SEM piece of corrosion-inhibiting coating prepared by embodiment 1；
Fig. 5 is EIS figure of the anticorrosive paint prepared by embodiment and comparative example after 3.5%NaCl impregnates 2 weeks；
Fig. 6 is the figure of corrosion-inhibiting coating scratch neutral salt spray 336h prepared by embodiment 1 and comparative example 1.
Specific embodiment
To facilitate the understanding of the present invention, it below with reference to embodiment to invention is more fully described, is given below
Presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to described herein
Embodiment.Purpose of providing these embodiments is makes the disclosure of the present invention more thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Used term is intended merely to describe specific reality in the description of the invention
Apply the purpose of example, it is not intended that in the limitation present invention.
The present invention provides a kind of anticorrosive paint, and according to parts by weight, raw material includes following components:
The piece diameter size of the graphene powder is 4-7 μm；
The mesh number of the zinc powder is 3000-5000 mesh.
Above-mentioned anticorrosive paint of the invention overcomes sinking of the zinc powder in storage and resin film forming procedure, improves zinc
Between powder and the electrical contact between matrix, and then improves and can really realize the electron-transport circuit between metallic matrix
Zinc powder number reduces the additive amount of zinc powder, avoid because large dosage add zinc powder caused by paint machine performance decline and at
This increase.In addition, after the graphene of stable dispersion forms the conductive network structure of even compact in coating, make graphene can be with
Efficiently play its shielding action and electrochemical action.The shielding action of graphene, which shows as effectively obstructing corrosive medium, to be applied
Diffusion path in layer is extended, and matrix corrosion process is delayed.The electrochemical action of graphene shows as enhancing zinc fine particles
Between electro-contact effect, improve zinc dust sacrificial anode effect.
Also, above-mentioned anticorrosive paint of the invention, which does not need addition anti-settling agent, can be achieved with good stability, avoid
Damage of the anti-settling agent for the electro-contact effect between zinc fine particles improves the sacrificial anode effect of zinc powder.
Preferably, anticorrosive paint of the invention, according to parts by weight, raw material includes following components:
It is further preferred that anticorrosive paint of the invention, according to parts by weight, raw material includes following components:
It is further preferred that anticorrosive paint of the invention, according to parts by weight, raw material includes following components:
The proportion of further preferred each component, can be further improved antiseptic property, the stability, mechanicalness in coating
Energy.
In wherein some embodiments, the mass fraction of zinc powder of the present invention is 20-40%.It is further preferred that institute
The mass fraction for stating zinc powder is 34-38%.Anticorrosive paint of the invention can realize zinc content far below traditional coating zinc content
80wt%-90wt%, so that the anticorrosive paint being prepared greatly reduces zinc under the premise of keeping good comprehensive performance
The waste of powder, avoids the decline of mechanical performance caused by a large amount of zinc powders and zinc powder is deposited on bottom and causes stirring when preparation tired
It is difficult.
Preferably, the mass ratio of the graphene powder and zinc powder are as follows: 1:(80-120).Thus when range, graphene can
To better play the effect of baffle, it is better protected from zinc powder sinking.
Specifically, the model KNG-G2-3 of the graphene powder, the graphene belong to hydrophily, more conducively graphene
Dispersion in resin.
The number of plies of the graphene powder is 1-5 layers.It, can be preferably when the number of plies range thus of graphene powder
Improve the electro-contact effect between zinc powder.
Preferably, the shape of the zinc powder is spherical, and the mesh number of the zinc powder is 4000-5000 mesh.It is further preferred that
The mesh number of zinc powder is 5000 mesh.In a certain range, the piece diameter of graphene is greater than the diameter of zinc powder, keeps preferred partial size ratio, makes
Graphene can preferably it is anti-settling and improve zinc powder between electro-contact effect.
In wherein some embodiments, the mass ratio of the propylene glycol monomethyl ether and butyl glycol ether is preferably 1:(0.9-
1.1).Further preferably 1:(1-1.1).
Optionally, the aqueous epoxy resin curing agent includes 8538,8537,6870 and of Hexion aqueous epoxy curing agent
At least one of 8290.Preferably, the aqueous epoxy resin curing agent is selected from Hexion aqueous epoxy curing agent 8538.The third two
Alcohol methyl ether and butyl glycol ether belong to alcohol ethers solvent, and the two cooperation can be used as molecular bridge connection water-base resin and oiliness solidification
Agent, with the volatilization of solvent and moisture, resin is gradually crosslinked with curing agent and forms a film.
Optionally, the aqueous epoxy resins in Hexion aqueous epoxy resins 6520,3520,5520 and 7520 extremely
Few one kind.Preferably, the aqueous epoxy resins be selected from Hexion aqueous epoxy resins 6520, can preferably realize resin at
Smooth coating is stablized in film, formation.
Preferably, when aqueous epoxy resin curing agent is selected from Hexion aqueous epoxy curing agent 8538, and aqueous epoxy resins
When selected from Hexion aqueous epoxy resins 6520, epoxy resin and epoxy curing agent can preferably be crosslinked film forming, make anti-corrosion
The comprehensive performance of coating is more preferable.
Optionally, the substrate wetting agents are in TEGO Twin 4100, TEGO wet 270 and TEGO wet 260
It is at least one.When substrate wetting agents are selected from TEGO Twin 4100, it can preferably improve the surface tension and infiltration of coating
Permeability can preferably soak ground, to improve the adhesive force of coating.
The present invention also provides a kind of preparation methods of above-mentioned anticorrosive paint, comprising the following steps:
(1) preparation of component A: propylene glycol monomethyl ether, aqueous epoxy resin curing agent, graphene powder are mixed, 2500r/
Min-3500r/min is uniformly dispersed；This rate of dispersion range can enable graphene film is uniformly interspersed to be integrated to water-base epoxy
In resin curing agent, so that graphene is not reunited, reach evenly dispersed ground effect.Zinc powder and butyl glycol ether are added,
4000r/min-6000r/min is uniformly dispersed；This rate of dispersion range can make graphene and zinc powder be uniformly mixed, and make zinc powder
Uniform dispersion, is not precipitated；Also, it is added in this order, preferably realizes the zinc powder result of prevention of graphene.
(2) preparation of B component: aqueous epoxy resins and substrate wetting agents are mixed, 500r/min-1000r/min dispersion
Uniformly；
(3) component A and B component are mixed, 500r/min-1000r/min is uniformly dispersed, and obtains anticorrosive paint.
Below in conjunction with specific embodiment, the present invention is described in further detail.
The reagent that the embodiment of the present invention is related to:
Zinc powder: the shape of zinc powder is specially spherical, is purchased from the Sheng new material Co., Ltd of Guangdong person of outstanding talent；
Graphene powder: model are as follows: KNG-G2-3；The piece diameter size of graphene powder is 4-7 μm, and the number of plies is 1-5 layers, purchase
From: Xiamen Kai Na graphene technical concern Co., Ltd；
Aqueous epoxy resins: it is specific to select Hexion aqueous epoxy curing agent 8538,6870, it is purchased from: Hexion chemical company pipe
Manage (Shanghai) Co., Ltd.；
Aqueous epoxy resin curing agent: it is specific to select Hexion aqueous epoxy resins 6520,5520, it is purchased from Hexion chemical company
Manage (Shanghai) Co., Ltd.；
Substrate wetting agents: it is specific to select TEGO Twin 4100, it is purchased from: three liters of Foshan trade Co., Ltd；
Butyl glycol ether: it is purchased from: Shanghai Aladdin biochemical technology limited liability company；
Propylene glycol monomethyl ether: it is purchased from: Shanghai Aladdin biochemical technology limited liability company.
The preparation of 1 anticorrosive paint of embodiment
(1) component A is made: by weight, sequentially added in stirring container the propylene glycol monomethyl ether of 15g, 15g it is aqueous
Epoxy curing agent 8538 and 0.648g graphene powder, 3000r/min are dispersed with stirring to uniform.Add 68.5g zinc powder
The butyl glycol ether of (5000 mesh) and 15g, 5000r/min high speed dispersion 20min.
(2) preparation of B component: by weight, separately taking a container, and 65.5g aqueous epoxy resins are added thereto
6520,0.6g substrate wetting agents TEGO Twin 4100,800r/min disperse 15min.
(3) stirring container is taken again, and A and B component are dispersed with stirring 15min in 800r/min and are uniformly mixed.
The preparation of 2 anticorrosive paint of embodiment
(1) component A is made: by weight, sequentially added in stirring container the propylene glycol monomethyl ether of 15g, 15g it is aqueous
Epoxy curing agent 8538 and 0.913g graphene powder, 3000r/min are dispersed with stirring to uniform.Add 68.5g zinc powder
The butyl glycol ether of (5000 mesh) and 15g, 6000r/min high speed dispersion 20min.
(2) preparation of B component: by weight, separately taking a container, and 65.5g aqueous epoxy resins are added thereto
6520,0.7g substrate wetting agents TEGO Twin 4100,800r/min disperse 15min.
(3) stirring container is taken again, and A and B component are dispersed with stirring 15min in 800r/min and are uniformly mixed.
The preparation of 3 anticorrosive paint of embodiment
(1) component A is made: by weight, sequentially added in stirring container the propylene glycol monomethyl ether of 15g, 16g it is aqueous
Epoxy curing agent 6870 and 1.141g graphene powder, 3000r/min are dispersed with stirring to uniform.Add 68.5g zinc powder
The butyl glycol ether of (5000 mesh) and 15g, 6000r/min high speed dispersion 20min.
(2) preparation of B component: by weight, separately taking a container, and 65.5g aqueous epoxy resins are added thereto
5520,0.7g substrate wetting agents TEGO Twin 4100,1000r/min disperse 15min.
(3) stirring container is taken again, and A and B component are dispersed with stirring 15min in 800r/min and are uniformly mixed.
The preparation of 4 anticorrosive paint of embodiment
(1) component A is made: by weight, sequentially added in stirring container the propylene glycol monomethyl ether of 15g, 15g it is aqueous
Epoxy curing agent 8538 and 0.648g graphene powder, 3000r/min are dispersed with stirring to uniform.Add 68.5g zinc powder
The butyl glycol ether of (3000 mesh) and 15g, 5000r/min high speed dispersion 20min.
(2) preparation of B component: by weight, separately taking a container, and 65.5g aqueous epoxy resins are added thereto
6520,0.6g substrate wetting agents TEGO Twin 4100,800r/min disperse 15min.
(3) stirring container is taken again, and A and B component are dispersed with stirring 15min in 800r/min and are uniformly mixed.
The preparation of 1 anticorrosive paint of comparative example
Comparative example 1 the difference from embodiment 1 is that: the dosage of graphene powder is less.
(1) component A is made: by weight, sequentially added in stirring container the propylene glycol monomethyl ether of 15g, 15g it is aqueous
Epoxy curing agent 8538 and 0.228g graphene powder, 3000r/min are dispersed with stirring to uniform.Add 68.5g zinc powder
The butyl glycol ether of (5000 mesh) and 15g, 5000r/min high speed dispersion 20min.
(2) preparation of B component: by weight, separately taking a container, and 65.5g aqueous epoxy resins are added thereto
6520,0.6g substrate wetting agents TEGO Twin 4100,800r/min disperse 15min.
(3) stirring container is taken again, and A and B component are dispersed with stirring 15min in 800r/min and are uniformly mixed.
The preparation of 2 anticorrosive paint of comparative example
Comparative example 2 the difference from embodiment 1 is that, butyl glycol ether is substituted for propylene glycol monomethyl ether in step (1).
(1) component A is made: by weight, sequentially added in stirring container the propylene glycol monomethyl ether of 15g, 15g it is aqueous
Epoxy curing agent 8538 and 0.648g graphene powder, 3000r/min are dispersed with stirring to uniform.Add 68.5g zinc powder
The propylene glycol monomethyl ether of (5000 mesh) and 15g, 5000r/min high speed dispersion 20min.
(2) preparation of B component: by weight, separately taking a container, and 65.5g aqueous epoxy resins are added thereto
6520,0.6g substrate wetting agents TEGO Twin 4100,800r/min disperse 15min.
(3) stirring container is taken again, and A and B component are dispersed with stirring 15min in 800r/min and are uniformly mixed.
The preparation of 3 anticorrosive paint of comparative example
Comparative example 3 the difference from embodiment 1 is that: the piece diameter of graphene powder be 9~11 μm.
(1) component A is made: by weight, sequentially added in stirring container the propylene glycol monomethyl ether of 15g, 15g it is aqueous
Epoxy curing agent 8538 and 0.648g graphene powder, 3000r/min are dispersed with stirring to uniform.Add 68.5g zinc powder
The butyl glycol ether of (5000 mesh) and 15g, 5000r/min high speed dispersion 20min.
(2) preparation of B component: by weight, separately taking a container, and 65.5g aqueous epoxy resins are added thereto
6520,0.6g substrate wetting agents TEGO Twin 4100,800r/min disperse 15min.
(3) stirring container is taken again, and A and B component are dispersed with stirring 15min in 800r/min and are uniformly mixed.
The preparation of 4 anticorrosive paint of comparative example
Comparative example 4 the difference from embodiment 1 is that: the mesh number of zinc powder be 1000 mesh.
(1) component A is made: by weight, sequentially added in stirring container the propylene glycol monomethyl ether of 15g, 15g it is aqueous
Epoxy curing agent 8538 and 0.648g graphene powder, 3000r/min are dispersed with stirring to uniform.Add 68.5g zinc powder
The butyl glycol ether of (1000 mesh) and 15g, 5000r/min high speed dispersion 20min.
(2) preparation of B component: by weight, separately taking a container, and 65.5g aqueous epoxy resins are added thereto
6520,0.6g substrate wetting agents TEGO Twin 4100,800r/min disperse 15min.
(3) stirring container is taken again, and A and B component are dispersed with stirring 15min in 800r/min and are uniformly mixed.
The anticorrosive paint that above-described embodiment, comparative example are obtained carries out following performance test:
Hardness test: it is carried out according to GB/T6739-1996.Coating hardness is measured using Portable pencil hardometer.Pencil
To coating inclination at 45 °, scratch is carried out under two Kg loads.Pencil hardness (6B- used when beginning with scar on coating
6H), the hardness as tested paint film.Test coating film thickness is (35 ± 2) μm.Adhesive force test: it is wanted according to GB/T5270-2005
Seek the binding force using tape test detection coating.By strength scotch tape adhesion on coating, and all air bubbles are removed,
It is spaced after 10s, applies a stabilization pulling force perpendicular to cover surface on adhesive tape, adhesive tape drawing is gone.Tape test
Evaluation criterion are as follows: 1 grade-poor, 2 grades-poor, 3 grades-general, 4 grades-preferably, 5 grades-good.Test coating film thickness is (35
±2)μm。
The test of scarification neutral salt spray: by the regulation of GB/T 1771-2007, it is long to be parallel to test plate (panel) for standardized road on test plate (panel)
The scratch on side is tested.Scratch should be at least 25mm away from each side of test plate (panel) and scratch between each other, and scratch should be transmission
Coating to ground straight line.Using a kind of scratch tool with hard point when implementation scratch, scratch should have two sides parallel or top
The section widened, metal substrate scratch width are 0.3-1.0mm.Test coating film thickness is (35 ± 2) μm.
Coating EIS test: experiment CH660 electrochemical workstation carries out electrochemical measurement, reference electrode in 3.5%NaCl
For saturated calomel electrode (SCE), auxiliary electrode is platinum electrode, and working electrode is band coating steel plate [work area 1.00cm2,
Film thickness (35 ± 2) μm], frequency range is (1 × 105~1 × 10-2) Hz, it is measured under open circuit potential, AC sine wave letter
Number amplitude is 10mV.
Test result is as shown in table 1 and Fig. 1-6:
1 anticorrosive paint test result of table
As shown in Figure 1, in embodiment 1, the Raman spectrogram is in 2600cm-1It is in the symmetrical peak 2D that place, which has a, this is stone
The characteristic peak of black alkene, and ID/IGIt is 0.46, shows that graphene defect used in the present invention is less.
As shown in Table 1, graphene of the invention has good zinc powder result of prevention, and anticorrosive paint of the invention has good
Good stability.In Fig. 2, suitable graphene is added in embodiment 1, after static 336h, zinc powder does not sink component A
Drop, and as shown in Figure 4, coating zinc powder is evenly distributed, and zinc powder extent of corrosion is higher, effectively improve zinc dust sacrificial anode effect with
And zinc powder is evenly dispersed in coating.And in comparative example 1, when graphene content is few, in Fig. 2, component A is through static 336h
Afterwards, zinc powder occurs obviously to settle, and in Fig. 3, zinc powder is less above coating, and is unevenly distributed, and zinc powder extent of corrosion is lower.Thus
It is found that graphene just can effectively stop the sedimentation of zinc powder under suitable proportion.In comparative example 4, the mesh number of zinc powder is 1000
Mesh, its partial size is larger at this time, and graphene cannot preferably play the effect of its baffle, so that component A layering is obvious, zinc powder is whole
It is deposited to bottom, it is difficult to stir.Therefore, when the piece diameter size of graphene powder and the mesh number size of zinc powder are in suitable model
It encloses, the graphene of two-dimensional nano sheet structure is layering in coating, interts and combines the shape in the hole of coating network structure
At the conductive network structure of even compact, the baffle declined in coating storage and resin film forming procedure as zinc powder, effectively
Ground prevents zinc powder from sinking, the dispersion for keeping zinc powder stable in coating.In suitable range, when the piece diameter increase of graphene, or
Person's zinc powder partial size reduces, and is conducive to graphene to the anti-settling effect of zinc powder and improves distribution situation of the zinc powder in coating.
By table 1 and Fig. 5 it is found that anticorrosive paint antiseptic property of the invention is good.336h is impregnated through 3.5%NaCl solution
Afterwards, the impedance of embodiment 1 is 1.069 × 109Ohm, anti-corrosive properties are best；The impedance of embodiment 2 is 9.318 × 108Ohm, anti-corrosive properties
Well；The impedance of embodiment 3 is 7.402 × 108Ohm, anti-corrosive properties are good；The impedance of embodiment 4 is 6.652 × 108Ohm, anti-corrosion
Property is good；The impedance of comparative example 1 is 4.571 × 108Ohm, anti-corrosive properties are poor；The impedance of comparative example 2 is 6.084 × 108Ohm, phase
For embodiment 1, anti-corrosive properties decrease；The impedance of comparative example 3 is 5.060 × 108Ohm, relative to embodiment 1, anti-corrosive properties
It decreases；The impedance of comparative example 4 is 1.602 × 108Ohm, anti-corrosive properties are poor.
As shown in Table 1, anticorrosive paint salt spray resistance of the invention is good.The salt spray resistance of embodiment 1 is optimal.Scheming
In 6,1 coating of embodiment is intact, white rust at scratch, uniformly complete at non-scratch；And 1 coating of comparative example is intact, rises at scratch
A large amount of red rusts blister at non-scratch, show that suitable graphene can effectively improve zinc dust sacrificial anode effect, to improve coating
Antiseptic property.Comparative example 2-4, to the mesh number size of the composition of paint solvent, the piece diameter size of graphene powder and zinc powder
It is adjusted, the salt spray resistance for the anticorrosive paint being prepared decreased significantly relative to embodiment 1.
In addition, as shown in Table 1, the coating adhesion of embodiment 1-4 and comparative example 1-4 are 0 grade and hardness is all 2H, table
Bright graphene does not influence the adhesive force of coating and hardness.Anticorrosive paint of the invention has good mechanical performance.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of anticorrosive paint, which is characterized in that according to parts by weight, raw material includes following components:
The piece diameter size of the graphene powder is 4-7 μm；
The mesh number of the zinc powder is 3000-5000 mesh.
2. anticorrosive paint according to claim 1, which is characterized in that according to parts by weight, raw material includes following components:
3. anticorrosive paint according to claim 2, which is characterized in that according to parts by weight, raw material includes following components:
4. anticorrosive paint according to claim 1, which is characterized in that the mass fraction of the zinc powder is 20-40%.
5. anticorrosive paint according to claim 1, which is characterized in that the mass ratio of the graphene powder and zinc powder are as follows:
1:(80-120).
6. anticorrosive paint according to claim 1, which is characterized in that the quality of the propylene glycol monomethyl ether and butyl glycol ether
Than for 1:(0.9-1.1).
7. anticorrosive paint according to claim 1, which is characterized in that the model KNG-G2-3 of the graphene powder；
The number of plies of graphene powder is 1-5 layers.
8. anticorrosive paint according to claim 1, which is characterized in that the shape of the zinc powder is sheet or spherical.
9. anticorrosive paint according to claim 1-8, which is characterized in that the aqueous epoxy resin curing agent choosing
From at least one of Hexion aqueous epoxy curing agent 8538,8537,6870,8545 and 8290；And/or the water-base epoxy
Resin includes at least one of Hexion aqueous epoxy resins 6520,3520,3540,5520 and 7520；And/or the substrate
Wetting agent is selected from least one of TEGO Twin 4100, TEGO wet 270, TEGO wet 280 and TEGO wet 260.
10. a kind of preparation method of the described in any item anticorrosive paints of claim 1-9, which comprises the following steps:
(1) preparation of component A: propylene glycol monomethyl ether, aqueous epoxy resin curing agent, graphene powder are mixed, 2500r/min-
3500r/min is uniformly dispersed；Zinc powder is added and butyl glycol ether, 4000r/min-6000r/min are uniformly dispersed；
(2) preparation of B component: aqueous epoxy resins and substrate wetting agents are mixed, and 500r/min-1000r/min is uniformly dispersed；
(3) component A and B component are mixed, 500r/min-1000r/min is uniformly dispersed, and obtains anticorrosive paint.
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| CN112375459A (en) * | 2020-11-20 | 2021-02-19 | 广东豪之盛新材料有限公司 | Graphene/water-based epoxy zinc-rich coating with high corrosion resistance and strong adhesive force and preparation method thereof |
| CN112538305A (en) * | 2020-11-26 | 2021-03-23 | 佛山市南海区巨人化学品制造有限公司 | Coating mixture for substrates immersed in seawater and method for the production thereof |
| CN112980286A (en) * | 2019-12-02 | 2021-06-18 | 云南万里化工制漆有限责任公司 | Novel anticorrosive paint and preparation method thereof |
| CN113861736A (en) * | 2021-10-19 | 2021-12-31 | 北京威峰科技发展集团有限公司 | Graphene anticorrosive paint and preparation method thereof |
| GB2621975A (en) * | 2022-08-18 | 2024-03-06 | Sparc Tech Limited | Anticorrosive coating composition comprising graphene |
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| CN108300146A (en) * | 2017-09-06 | 2018-07-20 | 海洋化工研究院有限公司 | For precision steel structures part surface can scumbling two-component anticorrosive paint and preparation method thereof |
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| CN112980286A (en) * | 2019-12-02 | 2021-06-18 | 云南万里化工制漆有限责任公司 | Novel anticorrosive paint and preparation method thereof |
| CN112375459A (en) * | 2020-11-20 | 2021-02-19 | 广东豪之盛新材料有限公司 | Graphene/water-based epoxy zinc-rich coating with high corrosion resistance and strong adhesive force and preparation method thereof |
| CN112538305A (en) * | 2020-11-26 | 2021-03-23 | 佛山市南海区巨人化学品制造有限公司 | Coating mixture for substrates immersed in seawater and method for the production thereof |
| CN113861736A (en) * | 2021-10-19 | 2021-12-31 | 北京威峰科技发展集团有限公司 | Graphene anticorrosive paint and preparation method thereof |
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| GB2622948A (en) * | 2022-08-18 | 2024-04-03 | Sparc Tech Limited | Anticorrosive coating composition comprising graphene |
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Application publication date: 20190816 |