CN116285573A - Aqueous epoxy zinc-rich anticorrosive paint capable of being coated with rust and preparation method thereof - Google Patents
Aqueous epoxy zinc-rich anticorrosive paint capable of being coated with rust and preparation method thereof Download PDFInfo
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- CN116285573A CN116285573A CN202310167504.1A CN202310167504A CN116285573A CN 116285573 A CN116285573 A CN 116285573A CN 202310167504 A CN202310167504 A CN 202310167504A CN 116285573 A CN116285573 A CN 116285573A
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 239000004593 Epoxy Substances 0.000 title claims abstract description 52
- 239000011701 zinc Substances 0.000 title claims abstract description 48
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 48
- 239000003973 paint Substances 0.000 title claims abstract description 43
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 59
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910001868 water Inorganic materials 0.000 claims abstract description 33
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 26
- 238000000576 coating method Methods 0.000 claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 21
- 239000010439 graphite Substances 0.000 claims abstract description 21
- 229910000349 titanium oxysulfate Inorganic materials 0.000 claims abstract description 17
- 239000000839 emulsion Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 28
- 238000003756 stirring Methods 0.000 claims description 18
- 239000011812 mixed powder Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 3
- 125000003277 amino group Chemical group 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 47
- 239000010959 steel Substances 0.000 abstract description 47
- 239000000758 substrate Substances 0.000 abstract description 17
- 238000005536 corrosion prevention Methods 0.000 abstract description 4
- 229910021389 graphene Inorganic materials 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 238000005054 agglomeration Methods 0.000 abstract description 2
- 230000002776 aggregation Effects 0.000 abstract description 2
- 238000005253 cladding Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000011253 protective coating Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 18
- 230000007797 corrosion Effects 0.000 description 17
- 239000010410 layer Substances 0.000 description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 description 3
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229940068041 phytic acid Drugs 0.000 description 3
- 235000002949 phytic acid Nutrition 0.000 description 3
- 239000000467 phytic acid Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229920002873 Polyethylenimine Polymers 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- YQTOVEJEXGTPNM-UHFFFAOYSA-N prop-2-enoic acid;zinc Chemical compound [Zn].OC(=O)C=C YQTOVEJEXGTPNM-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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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
- C09D5/10—Anti-corrosive paints containing metal dust
-
- 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
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
-
- 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
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C08K2003/0806—Silver
-
- 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
- C08K2003/0812—Aluminium
-
- 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
Abstract
The invention relates to a rust-coatable aqueous epoxy zinc-rich anticorrosive paint and a preparation method thereof, belonging to the technical field of metal corrosion prevention. The aqueous epoxy zinc-rich anticorrosive paint capable of being coated with rust is characterized by comprising the following components: aqueous epoxy emulsion, zinc powder, aluminum powder, titanium powder, silicon dioxide, graphite, titanyl sulfate, a curing agent and water. And a configuration method for the paint in use is also provided. The paint improves the compactness of a zinc powder layer through the use of graphite and silicon dioxide, and forms a continuous compact protective coating on a steel substrate; compared with the two-dimensional nano graphene adopted in the prior art, the nano graphite powder and the silicon dioxide powder with the three-dimensional structure are easier to disperse, are not easy to be subjected to cladding agglomeration with other raw materials in the powder mixing process, and avoid the non-uniformity of coating components.
Description
Technical Field
The invention relates to a rust-coatable aqueous epoxy zinc-rich anticorrosive paint and a preparation method thereof, belonging to the technical field of metal corrosion prevention.
Background
Steel structures are one of the most commonly used types of building structures, such as power towers, communication towers, workshops, bridges, high-rise buildings, and the like, due to their good strength and toughness. Because the steel structure is easy to generate corrosion and rust in the service environment to reduce the bearing performance of the steel structure, a zinc protective layer is often formed on the surface of the steel structure by adopting a hot galvanizing process in industry. Zinc has a corrosion potential lower than that of iron, and zinc preferentially corrodes as an anode and does not corrode as a cathode in a zinc-iron binary system. The method of protecting the cathode by the sacrificial anode can effectively reduce the corrosion condition of the steel structure in a corrosion environment. In practical engineering application, along with the extension of the running time of the steel structure, the zinc protection layer of the steel structure is gradually thinned, the steel substrate is slowly exposed, and the protection effect of the zinc layer on the steel structure is lost. The zinc-rich paint is coated on the surface of the steel structure by adopting a coating technology, so that the continuity of a zinc layer on the surface of the steel structure is guaranteed, and the method is the most commonly used and effective method for prolonging the corrosion-resistant service life of the steel structure. At present, solvent type zinc-rich paint, such as epoxy zinc-rich paint and acrylic acid zinc-rich paint, is mainly used for the corrosion prevention and maintenance of outdoor steel structures. The coating takes solvent type organic polymer as a film forming material and zinc powder as a filler, and forms a continuous zinc layer on the surface of a hot galvanizing layer of a steel structure, so that the corrosion resistance life of the steel structure is prolonged. However, the solvent-type zinc-rich paint emits harmful gases during engineering application, which not only affects physical and mental health of construction workers, but also causes environmental pollution. In addition, when the surface of the rusted steel structure is painted, the rusted layer is often required to be removed to improve the binding force between the coating and the steel structure, so that the construction cost is increased, and the anti-corrosion construction efficiency is also reduced. Therefore, development of a novel environment-friendly paint which can meet the construction requirements of rust steel structures and does not pollute the environment is particularly important and urgent.
The water-based epoxy zinc-rich anticorrosive paint has the advantages of low cost, stable performance and the like, and becomes an environment-friendly paint which is preferably selected for the anticorrosive maintenance of the steel structure. However, the aqueous coating has lower adhesion and film forming properties than the solvent-based coating, and the corrosion resistance is required to be further improved. Chinese patent CN112375459a discloses a high corrosion-resistant, strong adhesion, aqueous, zinc-rich epoxy corrosion-resistant coating. According to the invention, the polyethyleneimine modified graphene is added into the epoxy zinc-rich paint, and a uniform and compact whole is formed by utilizing the actions of polyethyleneimine, graphene oxide and water-based epoxy resin, so that the corrosion resistance and adhesive force of a zinc powder layer are improved. Chinese patent CN108034294a discloses a method for improving the adhesion of aqueous epoxy zinc-rich paint, which adopts silane coupling agent to wet zinc powder, and improves the adhesion of zinc powder layer and steel substrate. Although both of these patents improve the adhesion of the zinc powder layer to the steel substrate and the corrosion resistance of the zinc powder protective layer from different angles. However, the two kinds of coating can not solve the adhesion problem of the rusted steel matrix and can not meet the corrosion prevention maintenance of the rusted steel structure. Chinese patent CN112760016a discloses a water-based epoxy zinc-rich paint, which uses phytic acid to chelate metal ions to solve the rust layer problem of steel structure. Although phytic acid is an environment-friendly organic acid, the acidity of the phytic acid is lower than that of inorganic acid, and the corrosion-resistant construction of steel structures with higher corrosion degree cannot be solved.
Disclosure of Invention
In order to realize the purposes that the anticorrosive paint can meet the construction requirement of rusted steel structures and does not pollute the environment, the aqueous epoxy zinc-rich anticorrosive paint capable of being coated with rust is provided, and consists of the following components: aqueous epoxy emulsion, zinc powder, aluminum powder, silver powder, silicon dioxide, graphite, titanyl sulfate, a curing agent and water.
The technical scheme has the advantages that: the titanium oxysulfate and water are utilized to generate hydrolysis reaction to form sulfuric acid, and the rust layer on the surface of the rusted steel matrix can be removed through the chemical reaction of the sulfuric acid and ferric oxide, so that the adhesive force between the coating and the steel matrix is improved. Because the acid is not directly used as the rust conversion agent, the problem of environmental pollution caused by various acids in the prior art is solved. In addition, the sulfuric acid obtained after the hydrolysis of the titanyl sulfate is inorganic acid, has strong reducibility, and can effectively solve the influence of severe corrosion layers on the surface of the steel structure on the bonding force.
Further, the components are uniformly mixed according to the following weight percentages: 20-30% of aqueous epoxy emulsion, 20-50% of zinc powder, 5-15% of aluminum powder, 0.5-1.5% of silver powder, 1-3% of silicon dioxide, 1-5% of graphite, 5-10% of titanyl sulfate, 5-15% of curing agent and the balance of water.
The zinc powder is 800-mesh spherical zinc powder and 500-mesh flaky zinc powder according to the following ratio of 1:1 by mass ratio. The zinc powder adopts spherical and flaky shapes, and a continuous protective layer can be constructed by utilizing different forms of the zinc powder.
The aluminum powder is spherical aluminum powder with the diameter of 5 mu m; the silver powder was spherical silver powder having a diameter of 2.5. Mu.m. Aluminum powder and silver powder are added, and a multi-component protective layer is formed by utilizing multi-metal elements.
The silicon dioxide is spherical powder with the diameter of 50nm, and the graphite is graphite powder with the diameter of 70 nm. The use of the nano graphite powder and the silicon dioxide powder can improve the compactness of the zinc powder layer and form a continuous compact protective coating on the steel matrix. Compared with the two-dimensional nano graphene adopted in the prior art, the nano graphite powder and the silicon dioxide powder with the three-dimensional structure are easier to disperse, are not easy to be subjected to cladding agglomeration with other raw materials in the powder mixing process, and avoid the non-uniformity of coating components.
The curing agent is an amine curing agent.
The invention relates to a rust-coatable aqueous epoxy zinc-rich anticorrosive paint which is divided into A, B and C groups, wherein the A group is curing agent, zinc powder, aluminum powder, silver powder, silicon dioxide, graphite and water, the B group is aqueous epoxy emulsion, and the C group is titanyl sulfate. The operation steps during coating are as follows: respectively weighing a curing agent, zinc powder, aluminum powder, silver powder, silicon dioxide, graphite and water according to the weight percentage, and adopting a powder mixer to mix and stir spherical zinc powder, flaky zinc powder, aluminum powder, silver powder, silicon dioxide and graphite powder for 25-45 minutes to prepare mixed powder; then stirring the curing agent by adopting a 600-800rpm stirrer, sequentially adding water and mixed powder in the stirring process, and stirring for 30 minutes to finish the preparation of the group A; mixing the group C and the group A, manually stirring for 5-10 minutes, then adding the group B, continuously manually stirring for 5-10 minutes, preparing the aqueous epoxy zinc-rich paint, and carrying out subsequent coating.
Drawings
FIG. 1 is a photograph of a rust steel substrate coated with the aqueous epoxy zinc-rich anticorrosive coating of example 1;
FIG. 2 is a cross-sectional scanning electron microscope structure of the aqueous epoxy zinc-rich coating on the rust steel substrate of FIG. 1, wherein the reference number is: 1. a steel matrix, 2, a layer;
FIG. 3 is a graph showing the distribution of iron atoms in the selected region of FIG. 2;
fig. 4 is a graph showing an oxygen atom distribution in a selected region of fig. 2.
Detailed Description
The following examples are presented in conjunction with the accompanying drawings only to illustrate the technical aspects described in the claims, and are not intended to limit the scope of the claims.
Example 1
The rust-coated water-based epoxy zinc-rich anticorrosive paint is divided into A, B and C groups, wherein the A group is curing agent, zinc powder, aluminum powder, silver powder, silicon dioxide, graphite and water, the B group is water-based epoxy emulsion, the C group is titanyl sulfate, and the weight ratio of each component is as follows: 30% of aqueous epoxy emulsion, 20% of zinc powder, 15% of aluminum powder, 1.5% of silver powder, 3% of silicon dioxide, 5% of graphite, 7% of titanyl sulfate, 10% of an amine curing agent and the balance of water. Wherein the zinc powder is 800-mesh spherical zinc powder and 500-mesh flaky zinc powder according to the following ratio of 1:1 by mass ratio; aluminum powder with a diameter of 5 μm, silver powder with a diameter of 2 μm, spherical powder with a diameter of 40nm of silicon dioxide, and graphite powder with a diameter of 80 nm.
Example 2
The rust-coated water-based epoxy zinc-rich anticorrosive paint is divided into A, B and C groups, wherein the A group is curing agent, zinc powder, aluminum powder, silver powder, silicon dioxide, graphite and water, the B group is water-based epoxy emulsion, the C group is titanyl sulfate, and the weight ratio of each component is as follows: 20 percent of aqueous epoxy emulsion, 50 percent of zinc powder, 5 percent of aluminum powder, 0.5 to 1.5 percent of silver powder, 2 percent of silicon dioxide, 1 percent of graphite, 10 percent of titanyl sulfate, 5 percent of amine curing agent and the balance of water. Wherein the zinc powder is 600-mesh spherical zinc powder and 500-mesh flaky zinc powder according to the following ratio of 1:1 by mass ratio; aluminum powder with diameter of 2.5 μm, silver powder with diameter of μm, spherical powder with diameter of 70nm of silicon dioxide, and graphite powder with diameter of 100 nm.
Example 3
The rust-coated water-based epoxy zinc-rich anticorrosive paint is divided into A, B and C groups, wherein the A group is curing agent, zinc powder, aluminum powder, silver powder, silicon dioxide, graphite and water, the B group is water-based epoxy emulsion, the C group is titanyl sulfate, and the weight ratio of each component is as follows: 25% of aqueous epoxy emulsion, 35% of zinc powder, 10% of aluminum powder, 1% of silver powder, 2% of silicon dioxide, 4% of graphite, 6% of titanyl sulfate, 10% of an amine curing agent and the balance of water. Wherein the zinc powder is 800-mesh spherical zinc powder and 500-mesh flaky zinc powder according to the following ratio of 1:1 by mass ratio; aluminum powder with a diameter of 5 μm, silver powder with a diameter of 2.5 μm, spherical powder with a diameter of 50nm of silicon dioxide, and graphite powder with a diameter of 60 nm.
Example 4
The rust-coated water-based epoxy zinc-rich anticorrosive paint is divided into A, B and C groups, wherein the A group is curing agent, zinc powder, aluminum powder, silver powder, silicon dioxide, graphite and water, the B group is water-based epoxy emulsion, the C group is titanyl sulfate, and the weight ratio of each component is as follows: 22% of aqueous epoxy emulsion, 40% of zinc powder, 8% of aluminum powder, 1.2% of silver powder, 1.5% of silicon dioxide, 4% of graphite, 5% of titanyl sulfate, 10% of an amine curing agent and the balance of water. Wherein the zinc powder is 800-mesh spherical zinc powder and 500-mesh flaky zinc powder according to the following ratio of 1:1 by mass ratio; aluminum powder with a diameter of 5 μm, silver powder with a diameter of 2.5 μm, spherical powder with a diameter of 30nm of silicon dioxide, and graphite powder with a diameter of 100 nm.
Examples 1-4 preparation method of the rust coated aqueous epoxy zinc-rich anticorrosive paint comprises the following steps: respectively weighing a curing agent, zinc powder, aluminum powder, silver powder, silicon dioxide, graphite and water according to the weight percentage, and adopting a powder mixer to mix and stir spherical zinc powder, flaky zinc powder, aluminum powder, silver powder, silicon dioxide and graphite powder for 25-45 minutes to prepare mixed powder; then stirring the curing agent by adopting a 600-800rpm stirrer, sequentially adding water and mixed powder in the stirring process, and stirring for 30 minutes to finish the preparation of the group A; mixing the group C and the group A, manually stirring for 5-10 minutes, then adding the group B, continuously manually stirring for 5-10 minutes, preparing the aqueous epoxy zinc-rich paint, and carrying out subsequent coating.
Fig. 1 is a drawing showing a rust-resistant steel substrate coated with a coating layer 2 formed by the aqueous epoxy zinc-rich anticorrosive coating of example 1 on the steel substrate 1, wherein the thickness of the coating layer 2 is 60um, fig. 2 is a cross-sectional scanning electron microscope structure of the aqueous epoxy zinc-rich coating layer 2 on the rust-resistant steel substrate 1 of fig. 1, fig. 3 is a distribution diagram of iron atoms in a selected region of fig. 2, and fig. 4 is a distribution diagram of oxygen atoms in a selected region of fig. 2. It can be seen that the surface of the coating 2 formed after curing of the zinc rich paint is flat (fig. 1). The microstructure of the coating 2 presents the characteristics of continuous compactness and complex structure (figure 2), increases the diffusion path of corrosive medium, delays the corrosion rate of the steel matrix 1 and improves the corrosion resistance. The absence of oxidation products at the interface of the coating and the steel (fig. 3 and 4) indicates that the rust layer of the steel substrate has been removed by the coating, improving the bonding force of the coating to the steel substrate.
The same rust steel substrate shown in fig. 1 is taken, the aqueous epoxy zinc-rich anticorrosive paint of examples 2-4 is coated in the manner of the paint of example 1, rust spots of the rust steel substrate are cleaned completely, and the aqueous epoxy zinc-rich anticorrosive paint of examples 1-4 is coated respectively and is marked as comparative examples 1-4 respectively. Table 1 shows the performance measurements of the coatings of examples 1-4 and comparative examples 1-4 on steel substrates. It can be seen that the paint film adhesion and neutral salt spray corrosion resistance of the invention on the rust-resistant steel substrate (examples 1-4) are higher than those of the invention on the non-rust-resistant steel substrate (comparative examples 1-4), which shows that the invention is more suitable for the rust-resistant steel substrate and has the function of coating with rust.
TABLE 1 Performance Table of waterborne epoxy Zinc-rich anticorrosive paint
Note that: the detection standard of the adhesive force of the circle drawing method is as follows: GB/T1720-2020; the detection standard of the red rust occurrence time of neutral salt fog is as follows: GBT10125-2021.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The aqueous epoxy zinc-rich anticorrosive paint capable of being coated with rust is characterized by comprising the following components: aqueous epoxy emulsion, zinc powder, aluminum powder, silver powder, silicon dioxide, graphite, titanyl sulfate, a curing agent and water.
2. The rust coatable aqueous epoxy zinc-rich anticorrosive paint of claim 1, comprising the following components in weight ratio: 20-30% of aqueous epoxy emulsion, 20-50% of zinc powder, 5-15% of aluminum powder, 0.5-1.5% of silver powder, 1-3% of silicon dioxide, 1-5% of graphite, 5-10% of titanyl sulfate, 5-15% of curing agent and the balance of water.
3. The rust-coatable aqueous epoxy zinc-rich anticorrosive paint according to claim 1 or 2, characterized in that the zinc powder is a 600-800 mesh spherical zinc powder and a 300-500 mesh flaky zinc powder according to a mass ratio of 1: 1.
4. The rust coatable aqueous epoxy zinc-rich anticorrosive paint of claim 1 or 2, wherein the aluminum powder has a diameter of 2.5 to 5 μm and the silver powder has a diameter of 1 to 2.5 μm.
5. The rust coatable aqueous epoxy zinc-rich anticorrosive paint of claim 1 or 2, wherein the silica is spherical powder of 30-70nm diameter and the graphite is graphite powder of 40-100nm diameter.
6. The rust coatable aqueous epoxy zinc-rich anticorrosive coating of claim 1 or 2, wherein the curing agent is an amine curing agent.
7. The rust coatable aqueous epoxy zinc-rich anticorrosive paint of any one of claims 1-6, wherein the rust coatable aqueous epoxy zinc-rich anticorrosive paint is divided into three groups A, B and C, wherein group a is a curing agent, zinc powder, aluminum powder, silver powder, silica, graphite and water, group B is an aqueous epoxy emulsion, and group C is titanyl sulfate.
8. A method of preparing the rust-coatable aqueous epoxy zinc-rich anticorrosive paint of claim 7, comprising the steps of:
preparing a group A, namely weighing a curing agent, zinc powder, aluminum powder, silver powder, silicon dioxide, graphite and water according to the weight percentage, and adopting a powder mixer to mix and stir spherical zinc powder, flaky zinc powder, aluminum powder, silver powder, silicon dioxide and graphite powder for 25-45 minutes to prepare mixed powder; then stirring the curing agent by adopting a 600-800rpm stirrer, sequentially adding water and mixed powder in the stirring process, and stirring for 30 minutes to complete the preparation of the group A;
mixing the group C and the group A, manually stirring for 5-10 minutes, then adding the group B, continuously manually stirring for 5-10 minutes, and preparing the aqueous epoxy zinc-rich paint for subsequent coating.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117070120A (en) * | 2023-06-30 | 2023-11-17 | 山东建筑大学 | Water-based epoxy anticorrosive paint and coating method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514451A (en) * | 2009-02-27 | 2009-08-26 | 张国良 | Hexavalent chromium passivation solution used for galvanized tube and passivation process thereof |
| CN101838487A (en) * | 2009-10-10 | 2010-09-22 | 赵奎山 | Anti-corrosive pigment and preparation method thereof |
| CN102586768A (en) * | 2011-01-10 | 2012-07-18 | 中国石油化工股份有限公司 | Zinc layer surface passivating treatment liquid |
| CN103924229A (en) * | 2014-04-29 | 2014-07-16 | 无锡铱美特科技有限公司 | Aluminum alloy surface titanium dioxide conversion coating solution and using method thereof |
| CN104928664A (en) * | 2015-05-15 | 2015-09-23 | 武汉钢铁(集团)公司 | Bare steel rust layer transforming agent for salt-contained environment |
| CN106189459A (en) * | 2016-07-27 | 2016-12-07 | 福州大学 | A kind of chromium-free environmental-protection insulating paint for orientation silicon steel |
| CN107353711A (en) * | 2017-07-11 | 2017-11-17 | 蓬莱凯威文体制品有限公司 | A kind of preparation method of nano-particle reinforced resin lead for retractable pencil |
| CN111511963A (en) * | 2017-12-27 | 2020-08-07 | 日本帕卡濑精株式会社 | Surface treatment agent for metal material, metal material having surface treatment film, and method for producing same |
| CN113773722A (en) * | 2021-09-22 | 2021-12-10 | 国网山东省电力公司电力科学研究院 | Environment-friendly water-based epoxy rusty anticorrosive paint for steel structure and preparation method thereof |
| CN114921151A (en) * | 2022-06-14 | 2022-08-19 | 镇江德昇新材料研究有限公司 | Production process of water-based epoxy graphene priming paint with rust |
-
2023
- 2023-02-27 CN CN202310167504.1A patent/CN116285573A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514451A (en) * | 2009-02-27 | 2009-08-26 | 张国良 | Hexavalent chromium passivation solution used for galvanized tube and passivation process thereof |
| CN101838487A (en) * | 2009-10-10 | 2010-09-22 | 赵奎山 | Anti-corrosive pigment and preparation method thereof |
| CN102586768A (en) * | 2011-01-10 | 2012-07-18 | 中国石油化工股份有限公司 | Zinc layer surface passivating treatment liquid |
| CN103924229A (en) * | 2014-04-29 | 2014-07-16 | 无锡铱美特科技有限公司 | Aluminum alloy surface titanium dioxide conversion coating solution and using method thereof |
| CN104928664A (en) * | 2015-05-15 | 2015-09-23 | 武汉钢铁(集团)公司 | Bare steel rust layer transforming agent for salt-contained environment |
| CN106189459A (en) * | 2016-07-27 | 2016-12-07 | 福州大学 | A kind of chromium-free environmental-protection insulating paint for orientation silicon steel |
| CN107353711A (en) * | 2017-07-11 | 2017-11-17 | 蓬莱凯威文体制品有限公司 | A kind of preparation method of nano-particle reinforced resin lead for retractable pencil |
| CN111511963A (en) * | 2017-12-27 | 2020-08-07 | 日本帕卡濑精株式会社 | Surface treatment agent for metal material, metal material having surface treatment film, and method for producing same |
| CN113773722A (en) * | 2021-09-22 | 2021-12-10 | 国网山东省电力公司电力科学研究院 | Environment-friendly water-based epoxy rusty anticorrosive paint for steel structure and preparation method thereof |
| CN114921151A (en) * | 2022-06-14 | 2022-08-19 | 镇江德昇新材料研究有限公司 | Production process of water-based epoxy graphene priming paint with rust |
Non-Patent Citations (1)
| Title |
|---|
| 张光华, 房瑜红: "钛在硫酸钛溶液中的耐蚀性研究", 四川化工与腐蚀控制, no. 02, pages 13 - 15 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117070120A (en) * | 2023-06-30 | 2023-11-17 | 山东建筑大学 | Water-based epoxy anticorrosive paint and coating method thereof |
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