CN105419564A - Nano graphene oxide modified double-component aqueous epoxy anti-corrosion coating and preparation method thereof - Google Patents
Nano graphene oxide modified double-component aqueous epoxy anti-corrosion coating and preparation method thereof 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C08K3/04—Carbon
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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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
- 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
- C08K2201/011—Nanostructured additives
Abstract
The invention relates to a nano graphene oxide modified double-component aqueous epoxy anti-corrosion coating and a preparation method thereof. The preparation method includes the steps of a) modifying the surface of graphene oxide with a dispersing agent and resin to prepare graphene oxide pre-dispersed slurry; b) placing the graphene oxide pre-dispersed slurry into a stirring container according to proportion and then stirring the slurry uniformly; c) adding an aqueous epoxy emulsion, an anti-rust pigment, a filling material, a dispersing agent and an anti-flash-rust agent, performing high-speed dispersion and grinding to obtain a first component A of the graphene oxide modified double-component aqueous epoxy anti-corrosion coating; d) diluting an epoxy curing agent in deionized water to obtain a second component B of the graphene oxide modified double-component aqueous epoxy anti-corrosion coating; and e) mixing the component A and the component B uniformly, curing the mixture for 10 min to 15 days at 10-120 DEG C to obtain the coating. The coating is simple in process, is low in cost, is suitable for large-scale production, maintains excellent properties of epoxy resin, is better in corrosion resistance, anti-seepage property, mechanical performance and anti-wear property, and has wide industrial application prospect.
Description
Technical field
The present invention relates to coating technology, particularly relate to a kind of nano graphene oxide modified bi-component aqueous epoxy protective system and preparation method thereof.
Background technology
At present, about there is the iron and steel corrosion of 30% in the annual whole world, and the iron and steel of 10% becomes useless iron rust, every year because corroding the financial loss that causes up to 7,000 hundred million dollars.Metallic corrosion not only brings loss economically to the mankind, and is unfavorable for the protection of natural resources and enviroment, sometimes even jeopardizes personnel safety.In order to prevent and slowing down corrosion, in production practice and scientific experiment, develop many anti-corrosion methods.Wherein convenient, economical with coating protection, thus obtain a wide range of applications.
Chinese patent CN1456705 (publication date 2003.11.19) discloses a kind of corrosion-resistant finishes Rail Production technique, after rail pre-treatment, at Rail Surface spraying zinc-rich paint, makes rail adapt to comparatively rugged environment.
Existing epoxy zinc-enriched paint existing problems: 1, due to the relative density large (7.14) of zinc powder, very easily sink to the bottom in the epoxy; When 2, using as shop primer, easily produce the aerosol of zinc, affect the healthy of operator, therefore need the epoxy zinc-enriched paint developing low zinc-type, but the solidity to corrosion of the epoxy coating of low zinc-type compared with the epoxy coating of rich zinc-type decreases.
Chinese patent CN102604533A discloses a kind of protective system based on polyaniline and graphene composite material and preparation method.The protective system of this invention, can realize passivation and the inhibition of metal base, avoid the use of the heavy metals such as the zinc that can cause environmental pollution simultaneously, and preparation is simple, cost is low, be easy to industrialized mass production.But in the protective system described in CN102604533A, the dispersion effect being improved Graphene by the addition means of the Graphene of complexity has limitation.
The present invention utilizes pretreated nano graphene oxide in water to have the structure peeled off completely, and the existence of energy stable and uniform in aqueous epoxy emulsion, graphene oxide becomes tiny lamella, dispersion evenly, to the water-thinned epoxy zinc-rich coating, anti-medium permeability, the mechanical property that improve water-thinned epoxy zinc-rich coating, thermal characteristics is more favourable.In addition we select aqueous epoxy emulsion, with water as solvent, save ample resources; Fire hazard when water-borne coatings eliminates construction; Reduce topsoil; Also improve operating environmental condition simultaneously.
Summary of the invention
The object of the invention is some shortcoming and defect in order to overcome existing graphene oxide coating, the nano graphene oxide modified bi-component aqueous epoxy protective system adopting the mode of easy economy to obtain.The nano graphene oxide modified bi-component aqueous epoxy protective system obtained has excellent storage stability, not easily sink to the bottom, and reduce the content of zinc, reduce the pollution of heavy metal to environment and the potential threat to human health thereof, utilize Graphene significantly to improve antiseptic property simultaneously.
Technical scheme of the present invention is: the proportioning that nano graphene oxide modified bi-component aqueous epoxy protective system forms component A and B component by following two component A and B is 100:1 ~ 100:80;
Count by weight, component A comprises following component and content:
Count by weight, B component comprises following component and content:
Solidifying agent 20 ~ 100;
Deionized water 0 ~ 75;
Described graphene oxide is treated graphene oxide, and its particle diameter is 500 ~ 20000 orders.
Present invention also offers the preparation method of nano graphene oxide modified bi-component aqueous epoxy protective system:
1) the pre-dispersed slurry preparation of graphene oxide: graphene oxide is mixed with the aqueous solution of 20 ~ 80%, add 1 ~ 5% dispersion agent and 10 ~ 50% aqueous epoxy emulsions according to mass ratio simultaneously, use high speed dispersor to be ground to 500 ~ 20000 object particles, obtain the pre-dispersed slurry of graphene oxide;
2) the component A preparation of graphene oxide modified bi-component aqueous epoxy protective system: pre-dispersed for above-mentioned graphene oxide slurry and aqueous epoxy emulsion, active rust-stabilising pigment, zinc powder, filler, dispersion agent, defoamer, anti-layer agent etc. are added high-speed dispersion equipment according to proportioning, high speed dispersion is also ground to fineness through grinding plant and reaches less than 35 microns, obtains the component A of graphene oxide modified bi-component aqueous epoxy protective system;
3) the B component preparation of graphene oxide modified bi-component aqueous epoxy protective system: the B component preparation of graphene oxide modified bi-component aqueous epoxy protective system: count by weight, namely the deionized water mixed diluting of the solidifying agent of 20 ~ 100 parts and 0 ~ 75 part is obtained graphene oxide modified bi-component aqueous epoxy protective system B component;
4) add in component A by B component, the proportioning of component A and B component is 100:1 ~ 100:80, solidify to form graphene oxide modified bi-component aqueous epoxy protective system.
The present invention utilizes pretreated nano graphene oxide in water to have the structure peeled off completely, and the existence of energy stable uniform in aqueous epoxy emulsion, graphene oxide becomes tiny lamella, dispersion evenly, to the water-thinned epoxy zinc-rich coating, anti-medium permeability, the mechanical property that improve water-thinned epoxy zinc-rich coating, thermal characteristics is more favourable.The present invention adopts 2 component packagings, easily controls proportioning; Field mix can not produce dust, and environmental protection is harmless; Field mix is easy, only needs simple agitation to mix, improves operating efficiency; In addition, priming paint of the present invention is with water-base epoxy dispersion for main base, and emulsion good mechanical stability, together can grind with pigment, decreases the consumption as the water of dispersion medium and hydrophilic dispersion agent, wetting agent; Improve solid part of coating, improve the antiseptic property of coating: select aqueous epoxy emulsion, with water as solvent, save ample resources; Fire hazard when water-borne coatings eliminates construction; Reduce topsoil; Improve operating environmental condition.Nano graphene oxide modified bi-component aqueous epoxy protective system of the present invention have nontoxic, do not fire, easy construction, fast drying, paint film physical strength is high, strong adhesion, antiseptic property are excellent, the advantages such as coating excellent storage stability.Good suitability is had in protection against corrosion in the air of this coating ferrous materials in the facilities such as train, automobile, boats and ships, bridge, pipeline, freight container, basin.
Accompanying drawing explanation
Fig. 1 is salt-fog test contrast picture, and wherein (a) is common water borne corrosion-resistant epoxy paint, and (b) is nano graphene oxide modified bi-component aqueous epoxy protective system.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail below in conjunction with the specific embodiment of the present invention.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public concrete enforcement.
Be specific embodiment part below.
Embodiment 1
A kind of nano graphene oxide modified bi-component aqueous epoxy protective system, first graphene oxide is mixed with the aqueous solution of 20%, add 1% dispersion agent and 10% bisphenol A-type aqueous epoxy resin emulsion simultaneously, use high speed dispersion agent to be ground to 1000 object particles, obtain the pre-dispersed slurry of graphene oxide.Below by weight proportion, pre-dispersed for graphene oxide slurry 0.1, bisphenol A-type aqueous epoxy resin emulsion 20, zinc phosphate 1, aluminium triphosphate 5,500 order zinc flake 70, water-based wilkinite 2, mica powder 10, dispersion agent 0.5, defoamer 0.3, anti-settling agent 0.2 are stirred, high speed dispersion is also ground to fineness through grinding plant and reaches less than 35 microns, obtains the component A of graphene oxide modified bi-component aqueous epoxy protective system.Namely the 60 parts of deionized water dilutions of 40 portions of polyamide modified epoxy hardeners are obtained graphene oxide modified bi-component aqueous epoxy protective system B component simultaneously.Survey the index of central control of component A and B, qualified rear packaging.B component is added in component A according to 1:2, at 40 DEG C of solidification 8h, forms nano graphene oxide modified bi-component aqueous epoxy protective system.
Embodiment 2
A kind of nano graphene oxide modified bi-component aqueous epoxy protective system, first graphene oxide is mixed with the aqueous solution of 30%, add 2% dispersion agent and 20% bisphenol-f type aqueous epoxy resin emulsion simultaneously, use high speed dispersion agent to be ground to 500 object particles, obtain the pre-dispersed slurry of graphene oxide.Below by weight proportion, pre-dispersed for graphene oxide slurry 1, bisphenol-f type aqueous epoxy resin emulsion 20, zinc phosphate 2, aluminium triphosphate 3,1000 order spherical zinc powder 60, water-based wilkinite 1, light calcium carbonate 7, dispersion agent 0.5, defoamer 0.4, anti-settling agent 0.2 are stirred, high speed dispersion is also ground to fineness through grinding plant and reaches less than 35 microns, obtains the component A of graphene oxide modified bi-component aqueous epoxy protective system.Namely the 40 parts of deionized water dilutions of 60 portions of polyamide modified epoxy hardeners are obtained graphene oxide modified bi-component aqueous epoxy protective system B component simultaneously.Survey the index of central control of component A and B, qualified rear packaging.B component is added in component A according to 1:1, at 28 DEG C of solidification 10h, forms nano graphene oxide modified bi-component aqueous epoxy protective system.
Embodiment 3
A kind of nano graphene oxide modified bi-component aqueous epoxy protective system, first graphene oxide is mixed with the aqueous solution of 40%, add 1% dispersion agent and 5% bisphenol-f type aqueous epoxy resin emulsion simultaneously, use high speed dispersion agent to be ground to 2000 object particles, obtain the pre-dispersed slurry of graphene oxide.Below by weight proportion, pre-dispersed for graphene oxide slurry 5, bisphenol A-type aqueous epoxy resin emulsion 10, aluminium triphosphate 5,2000 order zinc flake 70, calcined kaolin 2, mica powder 8, dispersion agent 0.4, defoamer 0.4, hydroxylated cellulose 0.4 are stirred, high speed dispersion is also ground to fineness through grinding plant and reaches less than 35 microns, obtains the component A of graphene oxide modified bi-component aqueous epoxy protective system.Namely the 40 parts of deionized water dilutions of 60 parts of aliphatic amide modified epoxy solidifying agent are obtained graphene oxide modified bi-component aqueous epoxy protective system B component simultaneously.Survey the index of central control of component A and B, qualified rear packaging.B component is added in component A according to 1:1, at 30 DEG C of solidification 24h, forms nano graphene oxide modified bi-component aqueous epoxy protective system.
Embodiment 4
A kind of nano graphene oxide modified bi-component aqueous epoxy protective system, first graphene oxide is mixed with the aqueous solution of 50%, add 5% dispersion agent and the dimer acid modified epoxy resin latex of 50% high purity simultaneously, use high speed dispersion agent to be ground to 800 object particles, obtain the pre-dispersed slurry of graphene oxide.Below by weight proportion, epoxy resin latex 40 dimer acid modified to pre-dispersed for graphene oxide slurry 2, high purity, aluminium triphosphate 5,500 order zinc flake 40, calcined kaolin 5, mica powder 5, dispersion agent 0.4, defoamer 0.4, hydroxylated cellulose 0.4 are stirred, high speed dispersion is also ground to fineness through grinding plant and reaches less than 35 microns, obtains the component A of graphene oxide modified bi-component aqueous epoxy protective system.Namely the 50 parts of deionized water dilutions of 50 parts of aliphatic amide modified epoxy solidifying agent are obtained graphene oxide modified bi-component aqueous epoxy protective system B component simultaneously.Survey the index of central control of component A and B, qualified rear packaging.B component is added in component A according to 2:1, at 80 DEG C of solidification 2h, forms nano graphene oxide modified bi-component aqueous epoxy protective system.
Embodiment 5
A kind of nano graphene oxide modified bi-component aqueous epoxy protective system, first graphene oxide is mixed with the aqueous solution of 30%, add 1.5% dispersion agent and 30% aqueous acrylic modified epoxy emulsion simultaneously, use high speed dispersion agent to be ground to 1000 object particles, obtain the pre-dispersed slurry of graphene oxide.Below by weight proportion, pre-dispersed for graphene oxide slurry 0.5, aqueous acrylic modified epoxy emulsion 10, aluminium triphosphate 8,1000 order zinc flake 80, calcined kaolin 2, mica powder 3, dispersion agent 0.4, defoamer 0.4, hydroxylated cellulose 0.4 are stirred, high speed dispersion is also ground to fineness through grinding plant and reaches less than 35 microns, obtains the component A of graphene oxide modified bi-component aqueous epoxy protective system.Namely the 20 parts of deionized water dilutions of 80 parts of aliphatic amide modified epoxy solidifying agent are obtained graphene oxide modified bi-component aqueous epoxy protective system B component simultaneously.Survey the index of central control of component A and B, qualified rear packaging.B component is added in component A according to 1:3, at 50 DEG C of solidification 6h, forms nano graphene oxide modified bi-component aqueous epoxy protective system.
Embodiment 6
A kind of nano graphene oxide modified bi-component aqueous epoxy protective system, first graphene oxide is mixed with the aqueous solution of 20%, add 1% dispersion agent and 20% aqueous acrylic modified epoxy emulsion simultaneously, use high speed dispersion agent to be ground to 1000 object particles, obtain the pre-dispersed slurry of graphene oxide.Pre-dispersed for graphene oxide slurry 0.5, aqueous acrylic modified epoxy emulsion 15, aluminium triphosphate 8,800 order zinc flake 70, calcined kaolin 3, mica powder 5, dispersion agent 0.4, defoamer 0.4, hydroxylated cellulose 0.4 are stirred, high speed dispersion is also ground to fineness through grinding plant and reaches less than 35 microns, obtains the component A of graphene oxide modified bi-component aqueous epoxy protective system.Namely the 10 parts of deionized water dilutions of 90 portions of polyamide modified epoxy hardeners are obtained graphene oxide modified bi-component aqueous epoxy protective system B component simultaneously.Survey the index of central control of component A and B, qualified rear packaging.B component is added in component A according to 1:4, at 30 DEG C of solidification 10h, forms nano graphene oxide modified bi-component aqueous epoxy protective system.
Embodiment 7
A kind of nano graphene oxide modified bi-component aqueous epoxy protective system, first graphene oxide is mixed with the aqueous solution of 70%, add 5% dispersion agent and 40% aqueous acrylic modified epoxy emulsion simultaneously, use high speed dispersion agent to be ground to 800 object particles, obtain the pre-dispersed slurry of graphene oxide.Pre-dispersed for graphene oxide slurry 2, aqueous acrylic modified epoxy emulsion 40, aluminium triphosphate 10,1000 order spherical zinc powder 40, calcined kaolin 5, mica powder 4, dispersion agent 0.2, defoamer 0.8, hydroxylated cellulose 0.6 are stirred, high speed dispersion is also ground to fineness through grinding plant and reaches less than 35 microns, obtains the component A of graphene oxide modified bi-component aqueous epoxy protective system.Namely the 50 parts of deionized water dilutions of 50 portions of polyamide modified epoxy hardeners are obtained graphene oxide modified bi-component aqueous epoxy protective system B component simultaneously.Survey the index of central control of component A and B, qualified rear packaging.B component is added in component A according to 3:1, at 30 DEG C of solidification 10h, forms nano graphene oxide modified bi-component aqueous epoxy protective system.
Embodiment 8
A kind of nano graphene oxide modified bi-component aqueous epoxy protective system, first graphene oxide is mixed with the aqueous solution of 30%, add 5% dispersion agent and 10% aqueous acrylic modified epoxy emulsion simultaneously, use high speed dispersion agent to be ground to 2000 object particles, obtain the pre-dispersed slurry of graphene oxide.Pre-dispersed for graphene oxide slurry 0.5, aqueous acrylic modified epoxy emulsion 20, aluminium triphosphate 8,500 order zinc flake 60, calcined kaolin 6, mica powder 5, dispersion agent 0.4, defoamer 0.4, hydroxylated cellulose 0.4 are stirred, high speed dispersion is also ground to fineness through grinding plant and reaches less than 35 microns, obtains the component A of graphene oxide modified bi-component aqueous epoxy protective system.Namely the 70 parts of deionized water dilutions of 30 portions of polyamide modified epoxy hardeners are obtained graphene oxide modified bi-component aqueous epoxy protective system B component simultaneously.Survey the index of central control of component A and B, qualified rear packaging.B component is added in component A according to 5:1, at 30 DEG C of solidification 6h, forms nano graphene oxide modified bi-component aqueous epoxy protective system.
The nano graphene oxide modified bi-component aqueous epoxy protective system performance prepared by above-mentioned formula lists in table 1.
Table 1 nano graphene oxide modified bi-component aqueous epoxy protective system performance
Claims (11)
1. a nano graphene oxide modified bi-component aqueous epoxy protective system, it is characterized in that described nano graphene oxide modified bi-component aqueous epoxy protective system is made up of component A and B component, the proportioning of component A and B component is 100:1 ~ 100:80;
Count by weight, component A comprises following component and content:
Count by weight, B component comprises following component and content:
Solidifying agent 20 ~ 100;
Deionized water 0 ~ 75;
Wherein said graphene oxide is treated graphene oxide, and its particle diameter is 500 ~ 20000 orders.
2. nano graphene oxide modified bi-component aqueous epoxy protective system according to claim 1, is characterized in that: described aqueous epoxy emulsion is the dimer acid modified epoxy resin latex of bisphenol A-type aqueous epoxy resin emulsion, bisphenol-f type aqueous epoxy resin emulsion, aqueous acrylic modified epoxy emulsion, high purity.
3. nano graphene oxide modified bi-component aqueous epoxy protective system according to claim 1, is characterized in that: described active rust-stabilising pigment is one or both the mixture in zinc phosphate, aluminium triphosphate; Its content is 1 ~ 20wt%.
4. nano graphene oxide modified bi-component aqueous epoxy protective system according to claim 1, it is characterized in that: described zinc powder is spherical or sheet zinc powder, its particle diameter is 500 ~ 2000 orders.
5. nano graphene oxide modified bi-component aqueous epoxy protective system according to claim 1, it is characterized in that: described filler is the mixture of one or more in talcum powder, mica powder, light calcium carbonate, calcined kaolin, process white, and filler content is 5 ~ 30wt%.
6. nano graphene oxide modified bi-component aqueous epoxy protective system according to claim 1, is characterized in that: described dispersion agent is the sodium of alkenyl monomer and copolymers of unsaturated carboxylic acids, amine or ammonium salt.
7. nano graphene oxide modified bi-component aqueous epoxy protective system according to claim 1, is characterized in that: described defoamer is organic silicon modified by polyether.
8. nano graphene oxide modified bi-component aqueous epoxy protective system according to claim 1, is characterized in that: described anti-settling agent is Natvosol; Its content is 0.1 ~ 0.2wt%.
9. nano graphene oxide modified bi-component aqueous epoxy protective system according to claim 1, is characterized in that: described solidifying agent is solid part is the aliphatic amide modification of 50 ~ 70wt% or polyamide modified aqueous epoxy curing agent.
10. the preparation method of nano graphene oxide modified bi-component aqueous epoxy protective system according to claim 1, is characterized in that carrying out with step in the following order:
1) the pre-dispersed slurry preparation of graphene oxide: graphene oxide is mixed with the aqueous solution of 20 ~ 80%, add 1 ~ 5% dispersion agent and 10 ~ 50% aqueous epoxy emulsions according to mass ratio simultaneously, use high speed dispersor to be ground to 500 ~ 20000 object particles, obtain the pre-dispersed slurry of graphene oxide;
2) the component A preparation of graphene oxide modified bi-component aqueous epoxy protective system: pre-dispersed for above-mentioned graphene oxide slurry and aqueous epoxy emulsion, active rust-stabilising pigment, zinc powder, filler, dispersion agent, defoamer, anti-layer agent etc. are added high-speed dispersion equipment according to proportioning in claim 1, high speed dispersion is also ground to fineness through grinding plant and reaches less than 35 microns, obtains the component A of graphene oxide modified bi-component aqueous epoxy protective system;
3) the B component preparation of graphene oxide modified bi-component aqueous epoxy protective system: count by weight, namely the deionized water mixed diluting of the solidifying agent of 20 ~ 100 parts and 0 ~ 75 part is obtained graphene oxide modified bi-component aqueous epoxy protective system B component;
4) add in component A by B component, the proportioning of component A and B component is 100:1 ~ 100:80, solidify to form graphene oxide modified bi-component aqueous epoxy protective system.
The preparation method of 11. nano graphene oxide modified bi-component aqueous epoxy protective systems according to claim 10, it is characterized in that: when described B component adds component A, 10 DEG C ~ 120 DEG C solidifications 5 minutes ~ 15 days, form graphene oxide modified bi-component aqueous epoxy protective system.
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