CN111592812A - Water-based antirust primer and preparation method thereof - Google Patents
Water-based antirust primer and preparation method thereof Download PDFInfo
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- CN111592812A CN111592812A CN202010388563.8A CN202010388563A CN111592812A CN 111592812 A CN111592812 A CN 111592812A CN 202010388563 A CN202010388563 A CN 202010388563A CN 111592812 A CN111592812 A CN 111592812A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 29
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims abstract description 21
- 229910000165 zinc phosphate Inorganic materials 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 19
- 239000004593 Epoxy Substances 0.000 claims abstract description 18
- 150000001412 amines Chemical class 0.000 claims abstract description 15
- 239000000839 emulsion Substances 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 8
- 239000004606 Fillers/Extenders Substances 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 41
- 239000008367 deionised water Substances 0.000 claims description 20
- 229910021641 deionized water Inorganic materials 0.000 claims description 20
- 239000006185 dispersion Substances 0.000 claims description 20
- 239000002318 adhesion promoter Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 15
- 239000002270 dispersing agent Substances 0.000 claims description 14
- 238000009736 wetting Methods 0.000 claims description 12
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 5
- 239000010445 mica Substances 0.000 claims description 5
- 229910052618 mica group Inorganic materials 0.000 claims description 5
- 230000003449 preventive effect Effects 0.000 claims description 5
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical group CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 2
- 239000013522 chelant Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 229910000077 silane Inorganic materials 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 claims 8
- 229920000642 polymer Polymers 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract description 17
- 238000005260 corrosion Methods 0.000 abstract description 13
- 230000007797 corrosion Effects 0.000 abstract description 12
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 239000003973 paint Substances 0.000 description 25
- 239000000203 mixture Substances 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 13
- 239000000047 product Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000000080 wetting agent Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- LJRGBERXYNQPJI-UHFFFAOYSA-M sodium;3-nitrobenzenesulfonate Chemical compound [Na+].[O-][N+](=O)C1=CC=CC(S([O-])(=O)=O)=C1 LJRGBERXYNQPJI-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- NDKWCCLKSWNDBG-UHFFFAOYSA-N zinc;dioxido(dioxo)chromium Chemical compound [Zn+2].[O-][Cr]([O-])(=O)=O NDKWCCLKSWNDBG-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
-
- 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
-
- 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
-
- 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
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/328—Phosphates of heavy metals
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of antirust coatings, and particularly relates to a water-based antirust primer and a preparation method thereof. A water-based antirust primer comprises a component A and a component B, wherein the component A comprises 30-45 parts by mass of water-based epoxy emulsion, 5-10 parts by mass of iron oxide, 5-10 parts by mass of zinc phosphate, 3-6 parts by mass of antirust powder and 15-25 parts by mass of extender; the component B comprises 50-60 parts by mass of a water-based modified amine curing agent and 2-5 parts by mass of an anti-flash rust agent. The preparation method is very simple, and the raw materials in the component A and the component B are respectively and uniformly mixed. Under the synergistic action of zinc phosphate, iron oxide and the like, the problems of poor corrosion resistance and poor adhesive force of the traditional water-based antirust primer are solved, and the water-based antirust primer which has low VOC, high corrosion resistance and solvent-based putty resistance and can be coated with rust is prepared.
Description
Technical Field
The invention relates to the technical field of antirust coatings, and particularly relates to a water-based antirust primer and a preparation method thereof.
Background
Metal corrosion is ubiquitous and is particularly important in harsh marine environments, thereby causing great economic loss and various potential safety hazards. The application of anticorrosive and antirust paints is one of the most effective methods for preventing metal corrosion.
In the traditional coating, the use of heavy metal antirust coating such as zinc chromate and the like has great harm to human body. Meanwhile, the volatile organic solvent seriously pollutes the environment when the coating is formed into a film, vacuum is formed, water, oxygen and corrosive media permeate to form corrosion under the film, and a corrosion product expands to crack the coating, so that the corrosion prevention effect of the coating is reduced. Therefore, the development of the novel nontoxic antirust pigment and the reduction of organic solvents in the paint are main targets of the development of the environment-friendly antirust paint.
In recent years, a great deal of research has been carried out by domestic and foreign scholars on the rust prevention effect of zinc phosphate, and the zinc phosphate can generate a protective film in a coating by participating in chemical reaction to play an effective anti-corrosion effect. However, zinc phosphate is expensive and limits its use to some extent.
The invention with the patent number ZL201911126908.6 (application is Changzhou Guangshu chemical technology limited company) discloses a novel high-performance water-based epoxy paint and a preparation method thereof, and the novel high-performance water-based epoxy paint can be used in the industries of pipelines, storage tanks, automobiles and the like. The salt spray resistance of the paint is 480 hours, and the paint cannot be painted with rust.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a water-based anti-rust primer which has high corrosion resistance and solvent-based putty resistance and can be painted with rust and a preparation method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
a water-based antirust primer comprises a component A and a component B, wherein,
the component A comprises the following raw materials in parts by mass:
aqueous epoxy emulsion: 30-45 parts of a solvent;
iron oxide: 5-10 parts;
zinc phosphate: 5-10 parts;
antirust powder: 3-6 parts;
the body filling material: 15-25 parts;
the component B comprises the following raw materials in parts by mass:
aqueous modified amine curing agent: 50-60 parts;
flash rust preventive: 2-5 parts.
The zinc phosphate can participate in chemical reaction in the coating to form a protective film, and the zinc phosphate is matched with the iron oxide and the mica powder to form a scale-shaped layer, so that the corrosion resistance of the paint film is effectively improved.
Further, the mass ratio of the component A to the component B is 4-5: 1.
further, the component A also comprises 0.1-1.5 parts by mass of wetting dispersant, 2-5 parts by mass of film forming additive and 0.3-1.0 part by mass of adhesion promoter.
Further, the wetting dispersant is a nonionic high molecular weight polymer dispersant; the film-forming assistant is an ether alcohol solvent.
Furthermore, the adhesion promoter is an epoxy silane coupling assistant.
The epoxy silane coupling agent is used as an adhesion promoter, and can improve the adhesion and the corrosion resistance of a paint film.
Further, the filler comprises mica powder, barium sulfate and kaolin.
Barium sulfate and kaolin powder improve the solid content of the system, provide thixotropy and improve the thickness of a construction paint film.
Further, the water-based epoxy emulsion is E-20 epoxy resin emulsion.
Further, the rust-preventive powder is silicate.
The silicate antirust powder has chemical inertness, can prevent the oxidation reaction of a paint film, and can improve the corrosion resistance of the paint film.
Further, the anti-flash rust agent is a modified organic chelate; the waterborne modified amine curing agent is a nonionic amine adduct.
The preparation method of the water-based antirust primer specifically comprises the following steps:
preparation of component A: (1) adding 10-25 parts by mass of deionized water into a dispersion cylinder, adding 0.5-1.5 parts by mass of wetting dispersant, 5-10 parts by mass of ferric oxide, 5-10 parts by mass of zinc phosphate, 15-25 parts by mass of extender filler and 3-6 parts by mass of antirust powder while stirring; (2) respectively adding 30-45 parts by mass of water-based epoxy emulsion, 2-5 parts by mass of film forming additive and 0.3-1.0 part by mass of adhesion promoter, and fully and uniformly mixing; (3) adding 5-20 parts by mass of deionized water, and fully stirring to obtain a dispersion stable state;
preparation of the component B: adding 35-48 parts by mass of deionized water into a dispersion cylinder, adding 50-60 parts by mass of a water-based modified amine curing agent and 2-5 parts by mass of an anti-flash rust agent while stirring, and fully stirring to obtain a dispersion stable state;
mixing: mixing the component A and the component B in proportion to obtain a finished product.
Compared with the prior art, the invention has the beneficial effects that: by adding zinc phosphate, mica powder, iron oxide and an adhesion promoter, the coating has synergistic effect, solves the problem of coating adhesion of water and oil coatings, and enables the coating to resist solvent-based putty; but also can be coated with rust, solves the problem that the substrate is difficult to treat in the coating process, and reduces the labor amount of constructors. Thereby protecting the metal substrate to a great extent, reducing corrosion, improving the utilization rate of the substrate and the construction efficiency of workers, and improving economic benefits.
Detailed Description
In order to better illustrate the objects, technical solutions and advantages of the present invention, the present invention will be further described below by referring to examples.
Example 1:
a water-based antirust primer is prepared from a component A and a component B in a mass ratio of 4: 1, composition:
the component A comprises the following raw materials in parts by mass:
aqueous epoxy emulsion: 30 parts of (1);
deionized water: 28.2 parts;
wetting and dispersing agent: 1 part;
iron oxide: 10 parts of (A);
zinc phosphate: 10 parts of (A);
antirust material: 3 parts of a mixture;
the body filling material: 15 parts of (1);
film-forming auxiliary agent: 2 parts of (1);
an adhesion promoter: 0.8 part;
the component B comprises the following raw materials in parts by mass:
aqueous modified amine curing agent: 50 parts of a mixture;
deionized water: 48 parts of a mixture;
flash rust preventive: 2 parts of (1);
the preparation method of the water-based antirust primer comprises the following steps:
preparation of component A: (1) adding 10 parts by mass of deionized water into a dispersion cylinder, adding 1 part by mass of wetting dispersant, 10 parts by mass of iron oxide, 10 parts by mass of zinc phosphate, 15 parts by mass of extender and 3 parts by mass of antirust powder while stirring, wherein the stirring speed is 2000RPM, and stirring for 45 minutes until the fineness reaches 30 micrometers; (2) respectively adding 30 parts by mass of water-based epoxy emulsion, 2 parts by mass of film forming additive and 0.8 part by mass of adhesion promoter, stirring and mixing uniformly, wherein the stirring speed is 600RPM, and the stirring time is 15 minutes; (3) adding 18.2 parts by mass of deionized water, fully washing the wall of the cylinder and the stirring paddle, checking and measuring the viscosity, the pH value and the appearance of a paint film, and obtaining a dispersion stable state under the action of full stirring;
preparation of the component B: adding 48 parts by mass of deionized water into a dispersion cylinder, adding 50 parts by mass of a waterborne modified amine curing agent and 2 parts by mass of an anti-flash rust agent while stirring, wherein the stirring speed is 600RPM, and obtaining a dispersion stable state under full stirring after the viscosity, the pH value and the paint film appearance are checked and measured;
mixing: mixing the component A and the component B in proportion to obtain a finished product.
And coating the finished product on rusty metal to obtain a sample.
Example 2:
a water-based antirust primer is prepared from a component A and a component B in a mass ratio of 4: 1, composition:
the component A comprises the following raw materials in parts by mass:
aqueous epoxy emulsion: 30 parts of (1);
deionized water: 30.2 parts;
wetting and dispersing agent: 1.5 parts;
iron oxide: 5 parts of a mixture;
zinc phosphate: 5 parts of a mixture;
antirust powder: 6 parts of (1);
the body filling material: 20 parts of (1);
film forming solvent auxiliary agent: 2 parts of (1);
an adhesion promoter: 0.3 part;
the component B comprises the following raw materials in parts by mass:
aqueous modified amine curing agent: 50 parts of a mixture;
deionized water: 48 parts of a mixture;
flash rust preventive: 2 parts of (1);
the preparation method of the water-based antirust primer comprises the following steps:
preparation of component A: (1) adding 10 parts by mass of deionized water into a dispersion cylinder, adding 1 part by mass of wetting dispersant, 5 parts by mass of iron oxide, 5 parts by mass of zinc phosphate, 20 parts by mass of extender and 6 parts by mass of antirust powder while stirring, wherein the stirring speed is 2500RPM, and stirring for 30 minutes until the fineness reaches 30 micrometers; (2) respectively adding 30 parts by mass of water-based epoxy emulsion, 2 parts by mass of film forming additive and 0.3 part by mass of adhesion promoter, stirring and mixing uniformly, wherein the stirring speed is 800RPM, and the stirring time is 10 minutes; (3) adding 20.2 parts by mass of deionized water, fully washing the wall of the cylinder and the stirring paddle, checking and measuring the viscosity, the pH value and the appearance of a paint film, and obtaining a dispersion stable state under the action of full stirring;
preparation of the component B: adding 48 parts by mass of deionized water into a dispersion cylinder, adding 50 parts by mass of water-based modified amine curing agent and 2 parts by mass of anti-flash rust agent while stirring, wherein the stirring speed is 600RPM, and obtaining a dispersion stable state under full stirring after checking viscosity, pH value and qualified paint film appearance;
mixing: mixing the component A and the component B in proportion to obtain a finished product.
Example 3:
a water-based antirust primer is prepared from a component A and a component B in a mass ratio of 5: 1, composition:
the component A comprises the following raw materials in parts by mass:
aqueous epoxy emulsion: 45 parts of (1);
deionized water: 9.5 parts;
wetting and dispersing agent: 0.5 part;
iron oxide: 5 parts of a mixture;
zinc phosphate: 6 parts of (1);
antirust powder: 3 parts of a mixture;
the body filling material: 25 parts of (1);
film-forming auxiliary agent: 5 parts of a mixture;
an adhesion promoter: 1 part;
the component B comprises the following raw materials in parts by mass:
aqueous modified amine curing agent: 60 parts;
deionized water: 35 parts of (B);
flash rust preventive: 5 parts of a mixture;
the preparation method of the water-based antirust primer comprises the following steps:
preparation of component A: (1) adding 9.5 parts by mass of deionized water into a dispersion cylinder, adding 0.5 part by mass of wetting dispersant, 5 parts by mass of iron oxide, 6 parts by mass of zinc phosphate, 25 parts by mass of extender and 3 parts by mass of antirust powder while stirring, wherein the stirring speed is 2500RPM, and stirring for 45 minutes until the fineness reaches 30 micrometers; (2) respectively adding 45 parts by mass of water-based epoxy emulsion, 5 parts by mass of film-forming assistant and 1 part by mass of adhesion promoter, and uniformly stirring and mixing. The stirring speed is 800RPM, and the stirring time is 15 minutes; (3) fully washing the cylinder wall and the stirring paddle, checking and measuring the viscosity, the pH value and the appearance of a paint film, and obtaining a dispersion stable state under the action of full stirring;
preparation of the component B: adding 35 parts by mass of deionized water into a dispersion cylinder, adding 60 parts by mass of water-based modified amine curing agent and 5 parts by mass of anti-flash rust agent while stirring, wherein the stirring speed is 800RPM, and obtaining a dispersion stable state under full stirring after checking viscosity, pH value and qualified paint film appearance;
mixing: mixing the component A and the component B in proportion to obtain a finished product.
Comparative example 1
The procedure was as in example 1 except that zinc phosphate was not contained in the A component.
And coating the finished product on rusty metal to prepare a comparison sample.
Paint film performance tests were conducted on example 1 and comparative example 1, and the results are shown in the following table:
TABLE 1 paint film Properties test
The performance test of the paint film shows that the water-based anti-rust primer added with zinc phosphate has better rusty coating effect, and the paint film does not rust. In addition, in a salt spray resistance test, the paint can resist salt spray for 600 hours, and the paint film does not generate bubbles and rust. Proves that the synergistic effect of the zinc phosphate, the mica powder, the iron oxide and the adhesion promoter improves the corrosion resistance of the paint, overcomes the defects of the prior art and achieves the aim of the invention.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A water-based antirust primer is characterized by comprising a component A and a component B, wherein,
the component A comprises the following raw materials in parts by mass:
aqueous epoxy emulsion: 30-45 parts of a solvent;
iron oxide: 5-10 parts;
zinc phosphate: 5-10 parts;
antirust powder: 3-6 parts;
the body filling material: 15-25 parts;
the component B comprises the following raw materials in parts by mass:
aqueous modified amine curing agent: 50-60 parts;
flash rust preventive: 2-5 parts.
2. The water-based antirust primer according to claim 1, wherein the mass ratio of the component A to the component B is 4-5: 1.
3. the water-based antirust primer according to claim 1, wherein the component A further comprises 0.1-1.5 parts by mass of a wetting dispersant, 2-5 parts by mass of a film forming aid, and 0.3-1.0 part by mass of an adhesion promoter.
4. The aqueous rust inhibitive primer according to claim 3, wherein the wetting dispersant is a nonionic high molecular polymer-based dispersant;
the film-forming assistant is an ether alcohol solvent.
5. The water-based rust inhibitive primer according to claim 3, wherein the adhesion promoter is an epoxy silane coupling aid.
6. The water-based rust inhibitive primer according to claim 1, wherein the extender is at least one of mica powder, barium sulfate, and kaolin.
7. The water-based rust inhibitive primer according to claim 1, wherein the water-based epoxy emulsion is an E-20 epoxy resin emulsion.
8. The aqueous rust inhibitive primer according to claim 1, wherein the rust inhibitive powder is a silicate.
9. The aqueous rust inhibitive primer according to claim 1, wherein the flash rusting inhibitive agent is a modified organic chelate;
the waterborne modified amine curing agent is a nonionic amine adduct.
10. The method for preparing the water-based anti-rust primer according to any one of claims 1 to 9, characterized by comprising the steps of:
preparation of component A: (1) adding 10-25 parts by mass of deionized water into a dispersion cylinder, adding 0.5-1.5 parts by mass of wetting dispersant, 5-10 parts by mass of ferric oxide, 5-10 parts by mass of zinc phosphate, 15-25 parts by mass of extender filler and 3-6 parts by mass of antirust powder while stirring; (2) respectively adding 30-45 parts by mass of water-based epoxy emulsion, 2-5 parts by mass of film forming additive and 0.3-1.0 part by mass of adhesion promoter, and fully and uniformly mixing; (3) adding 5-20 parts by mass of deionized water, and fully stirring to obtain a dispersion stable state;
preparation of the component B: adding 35-48 parts by mass of deionized water into a dispersion cylinder, adding 50-60 parts by mass of a water-based modified amine curing agent and 2-5 parts by mass of an anti-flash rust agent while stirring, and fully stirring to obtain a dispersion stable state;
mixing: mixing the component A and the component B in proportion to obtain a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010388563.8A CN111592812A (en) | 2020-05-09 | 2020-05-09 | Water-based antirust primer and preparation method thereof |
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| CN113667380A (en) * | 2021-09-09 | 2021-11-19 | 国网山东省电力公司电力科学研究院 | A kind of photocatalytic anti-rust water-based anti-corrosion paint with rust and preparation method thereof |
| CN115895388A (en) * | 2022-11-18 | 2023-04-04 | 清远市贝客音涂料有限公司 | A kind of water-based environment-friendly epoxy primer and preparation method thereof |
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| CN113667380A (en) * | 2021-09-09 | 2021-11-19 | 国网山东省电力公司电力科学研究院 | A kind of photocatalytic anti-rust water-based anti-corrosion paint with rust and preparation method thereof |
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Application publication date: 20200828 |