CN115216205A - Water-based epoxy zinc-rich paint and preparation method thereof - Google Patents
Water-based epoxy zinc-rich paint and preparation method thereof Download PDFInfo
- Publication number
- CN115216205A CN115216205A CN202210926258.9A CN202210926258A CN115216205A CN 115216205 A CN115216205 A CN 115216205A CN 202210926258 A CN202210926258 A CN 202210926258A CN 115216205 A CN115216205 A CN 115216205A
- Authority
- CN
- China
- Prior art keywords
- water
- component
- based epoxy
- agent
- zinc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000003973 paint Substances 0.000 title claims abstract description 46
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 36
- 239000011701 zinc Substances 0.000 title claims abstract description 36
- 239000004593 Epoxy Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- LEEANUDEDHYDTG-UHFFFAOYSA-N 1,2-dimethoxypropane Chemical compound COCC(C)OC LEEANUDEDHYDTG-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000440 bentonite Substances 0.000 claims abstract description 21
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 21
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000006254 rheological additive Substances 0.000 claims abstract description 21
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 18
- 239000008367 deionised water Substances 0.000 claims abstract description 12
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 12
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004952 Polyamide Substances 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 11
- 239000003822 epoxy resin Substances 0.000 claims abstract description 11
- 229920002647 polyamide Polymers 0.000 claims abstract description 11
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 11
- 239000000080 wetting agent Substances 0.000 claims abstract description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 10
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical group [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 235000010288 sodium nitrite Nutrition 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 abstract description 12
- 239000011248 coating agent Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 10
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 6
- 239000001257 hydrogen Substances 0.000 abstract description 6
- 238000007665 sagging Methods 0.000 abstract description 5
- 230000002195 synergetic effect Effects 0.000 abstract description 5
- 230000008719 thickening Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 125000001183 hydrocarbyl group Chemical group 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 125000005372 silanol group Chemical group 0.000 description 2
- 238000007614 solvation Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009974 thixotropic effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- 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
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
-
- 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
- C09D7/43—Thickening agents
- C09D7/44—Combinations of two or more thickening agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/45—Anti-settling agents
-
- 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
- C09D7/47—Levelling agents
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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 discloses a water-based epoxy zinc-rich paint and a preparation method thereof, belonging to the technical field of paint, wherein the water-based epoxy zinc-rich paint comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 8-10 parts of water-based epoxy resin, 60-70 parts of zinc powder, 8-10 parts of propylene glycol dimethyl ether, 0.4-0.6 part of wetting agent, 0.7-1 part of dispersing agent, 0.8-1 part of rheological additive and 0.3-0.4 part of polyamide anti-settling agent; the component B comprises a curing agent, deionized water, propylene glycol dimethyl ether, ethylene glycol monobutyl ether and an anti-flash rust agent. According to the invention, the organic bentonite and the fumed silica are matched for use, so that a good synergistic effect is achieved on thickening of a coating system, a hydrogen bond network structure with thixotropy is formed in the system, an excellent anti-settling effect is obtained, the problem that zinc powder is easy to settle and agglomerate is effectively solved, and good leveling property and anti-sagging property are provided for the coating; thereby improving the weather resistance and impact resistance of the paint film.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a water-based epoxy zinc-rich paint and a preparation method thereof.
Background
In the method of paint film corrosion protection of steel surface, the use of zinc protective layer is one of the common and effective methods. Because the standard electrode potential of zinc is negative to iron, the zinc layer has the function of protecting a steel matrix by a sacrificial anode in water and humid air, thereby greatly prolonging the service life of steel and achieving excellent anticorrosion effect. The zinc-rich paint has physical shielding effect and electrochemical cathode protection effect. The waterborne epoxy zinc-rich paint is more and more favored by people in the development direction of the concepts of safety, non-toxicity, safety, environmental protection and green.
The water-based epoxy zinc-rich paint has one of excellent paint varieties with the corrosion resistance service life of more than 10 years, has the cathodic protection effect and the shielding effect on the corrosion resistance of a metal substrate in the early stage of corrosion, and is widely applied to building steel structures, ships, bridges, storage tanks, iron towers and the like. At present, the water-based epoxy zinc-rich paint on the general market is influenced by the environmental temperature and humidity, and the coating film has high zinc powder content and is easy to generate air holes, so that the weather resistance and the impact resistance of the paint film are poor, and therefore, a new water-based epoxy zinc-rich paint needs to be developed through technical innovation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a water-based epoxy zinc-rich paint and a preparation method thereof.
According to the preparation method, the proper rheological additive is selected, and the organic bentonite and the fumed silica are matched for use, so that a good synergistic effect is achieved on thickening of a coating system, a hydrogen bond network structure with thixotropy is formed in the system, an excellent anti-settling effect is obtained, the problem that zinc powder is easy to settle and agglomerate is effectively solved, and good leveling property and anti-sagging property are provided for the coating; thereby improving the weather resistance and impact resistance of the paint film.
The purpose of the invention can be realized by the following technical scheme:
the water-based epoxy zinc-rich paint comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 8-10 parts of waterborne epoxy resin, 60-70 parts of zinc powder, 8-10 parts of propylene glycol dimethyl ether, 0.4-0.6 part of wetting agent, 0.7-1 part of dispersing agent, 0.8-1 part of rheological additive and 0.3-0.4 part of polyamide anti-settling agent; the component B comprises a curing agent, deionized water, propylene glycol dimethyl ether, ethylene glycol monobutyl ether and an anti-flash rust agent, and the mass ratio of the components is 5-7:4-5; the mass ratio of the component A to the component B is 10.
Further, the flash rust inhibitor is sodium nitrite.
Further, the particle size of the zinc powder was 800 mesh.
Further, the rheological additive is a mixture of organic bentonite and fumed silica, and the mass ratio of the organic bentonite to the fumed silica is 1:1;
the addition of a proper rheological additive is very necessary because a large amount of zinc powder with high relative density is added into the water-based epoxy zinc-rich primer, and the zinc powder is easy to settle and affects the stability of a system. The rheological additive in the system is selected to have excellent anti-settling effect, certain thixotropy and good anti-sagging performance during construction. The organic bentonite leads countless bentonite sheets to form a gel structure through the bridging of water molecules, and hydrocarbon chains on the sheet surfaces thicken the system through the strong solvation capacity and generate a thixotropic effect. The surface of the gas-phase silicon dioxide is provided with silanol groups, and a three-dimensional structure is formed in a bridging mode through hydrogen bond interaction, so that the gas-phase silicon dioxide has pseudoplasticity and thixotropy; the organic bentonite and the fumed silica are matched for use, so that a good synergistic effect is achieved for thickening of a coating system, a hydrogen bond network structure with thixotropy is formed in the system, an excellent anti-settling effect is obtained, the problem that zinc powder is easy to settle and agglomerate is effectively solved, and good leveling property and anti-sagging property are provided for the coating.
Further, the preparation method of the water-based epoxy zinc-rich paint comprises the following steps:
preparation of component A: adding the water-based epoxy resin, the dispersing agent, the wetting agent and the propylene glycol dimethyl ether into a container according to a certain proportion, stirring for 10min at a low speed (600 r/min), continuously adding the rheological additive and the polyamide anti-settling agent according to a certain proportion, stirring for 10-20min at a high speed (2000 r/min), adding the zinc powder into the mixture, and dispersing at a high speed (2000 r/min) until the fineness is less than 200 meshes;
preparation of the component B: sequentially adding deionized water, propylene glycol dimethyl ether, ethylene glycol monobutyl ether and an anti-flash rust agent into a curing agent, dispersing for 15min at a low speed (600 r/min), and filtering through 200-mesh filter cloth;
the A, B components are evenly mixed according to the mass ratio of 10:1, and the water-based epoxy zinc-rich paint can be prepared.
The invention has the beneficial effects that:
in the water-based epoxy zinc-rich primer, organic bentonite and fumed silica are used as rheological additives, the organic bentonite enables countless bentonite sheets to form a gel structure through the bridging of water molecules, and hydrocarbon chains on the sheet surfaces thicken the system through the strong solvation capacity of the hydrocarbon chains and generate a thixotropic effect. The surface of the gas-phase silicon dioxide is provided with silanol groups, and a three-dimensional structure is formed in a bridging mode through hydrogen bond interaction, so that the gas-phase silicon dioxide has pseudoplasticity and thixotropy; the organic bentonite and the fumed silica are matched for use, so that a good synergistic effect is achieved on the thickening of a coating system, a hydrogen bond network structure with thixotropy is formed in the system, an excellent anti-settling effect is obtained, the problem that zinc powder is easy to settle and agglomerate is effectively solved, and meanwhile, good leveling property and anti-sagging property are provided for the coating; thereby improving the weather resistance and impact resistance of the paint film.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The water-based epoxy zinc-rich paint comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 8g of water-based epoxy resin, 60g of zinc powder (the particle size is 800 meshes), 8g of propylene glycol dimethyl ether, 0.4g of wetting agent, 0.7g of dispersing agent, 0.8g of rheological additive and 0.3g of polyamide anti-settling agent; the component B comprises 5g of curing agent, 4g of deionized water, 15g of propylene glycol dimethyl ether, 10g of ethylene glycol monobutyl ether and 2g of sodium nitrite;
the rheological additive is a mixture of organic bentonite and fumed silica, and the mass ratio of the organic bentonite to the fumed silica is 1:1;
the preparation method of the water-based epoxy zinc-rich paint comprises the following steps:
preparation of the component A: adding the water-based epoxy resin, the dispersing agent, the wetting agent and the propylene glycol dimethyl ether into a container according to a certain proportion, stirring for 10min at 600r/min, continuously adding the rheological additive and the polyamide anti-settling agent according to a certain proportion, stirring for 10min at 2000r/min, adding the zinc powder into the mixture, and dispersing at a high speed until the fineness is less than 200 meshes;
preparation of the component B: sequentially adding deionized water, propylene glycol dimethyl ether, ethylene glycol monobutyl ether and an anti-flash rust agent into a curing agent, dispersing for 15min at a speed of 600r/min, and filtering through 200-mesh filter cloth;
the A, B components are evenly mixed according to the mass ratio of 10:1, and the water-based epoxy zinc-rich paint can be prepared.
Example 2
The water-based epoxy zinc-rich paint comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 9g of water-based epoxy resin, 65g of zinc powder (the particle size is 800 meshes), 9g of propylene glycol dimethyl ether, 0.5g of wetting agent, 0.8g of dispersing agent, 0.9g of rheological additive and 0.35g of polyamide anti-settling agent; the component B comprises 6g of curing agent, 4.5g of deionized water, 17g of propylene glycol dimethyl ether, 11g of ethylene glycol monobutyl ether and 2.5g of sodium nitrite;
the rheological additive is a mixture of organic bentonite and fumed silica, and the mass ratio of the organic bentonite to the fumed silica is 1:1;
the preparation method of the water-based epoxy zinc-rich paint comprises the following steps:
preparation of the component A: adding the water-based epoxy resin, the dispersing agent, the wetting agent and the propylene glycol dimethyl ether into a container according to a certain proportion, stirring for 10min at 600r/min, continuously adding the rheological additive and the polyamide anti-settling agent according to a certain proportion, stirring for 15min at 2000r/min, adding the zinc powder into the mixture, and dispersing at a high speed until the fineness is less than 200 meshes;
preparation of the component B: sequentially adding deionized water, propylene glycol dimethyl ether, ethylene glycol monobutyl ether and an anti-flash rust agent into a curing agent, dispersing for 15min at a speed of 600r/min, and filtering through 200-mesh filter cloth;
the A, B components are evenly mixed according to the mass ratio of 10:1, and the water-based epoxy zinc-rich paint can be prepared.
Example 3
The water-based epoxy zinc-rich paint comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10g of water-based epoxy resin, 70g of zinc powder (the particle size is 800 meshes), 10g of propylene glycol dimethyl ether, 0.6g of wetting agent, 1g of dispersing agent, 1g of rheological additive and 0.4g of polyamide anti-settling agent; the component B comprises 7g of curing agent, 5g of deionized water, 19g of propylene glycol dimethyl ether, 12g of ethylene glycol monobutyl ether and 3g of sodium nitrite;
the rheological additive is a mixture of organic bentonite and fumed silica, and the mass ratio of the organic bentonite to the fumed silica is 1:1;
the preparation method of the water-based epoxy zinc-rich paint comprises the following steps:
preparation of component A: adding the water-based epoxy resin, the dispersing agent, the wetting agent and the propylene glycol dimethyl ether into a container according to a certain proportion, stirring for 10min at 600r/min, continuously adding the rheological additive and the polyamide anti-settling agent according to a certain proportion, stirring for 20min at 2000r/min, adding the zinc powder into the mixture, and dispersing at a high speed until the fineness is less than 200 meshes;
preparation of the component B: sequentially adding deionized water, propylene glycol dimethyl ether, ethylene glycol monobutyl ether and an anti-flash rust agent into a curing agent, dispersing for 15min at a speed of 600r/min, and filtering through 200-mesh filter cloth;
the A, B components are evenly mixed according to the mass ratio of 10:1, and the water-based epoxy zinc-rich paint can be prepared.
Comparative example 1
The rheological aid in example 1 was changed to organobentonite, and the remaining raw materials and preparation were unchanged.
Comparative example 2
The rheological aid of example 1 was replaced by fumed silica, and the remaining raw materials and preparation were unchanged.
Adding a proper amount of deionized water into the paint obtained in the examples 1-3 and the comparative examples 1-2 to dilute the paint to the construction viscosity, selecting a sand blasting steel plate with the thickness of 2-3mm, adopting air spraying, baking at 60 ℃ for 1h under the curing condition, and carrying out performance test on the paint film after curing at 23 ℃ for 14 d;
the storage stability of the coating is tested according to GB/T6753.3-1986; the sag resistance of the coating is tested according to the GB/T9264-1988 standard;
the water resistance of the paint film is tested according to the GB/T1733-1993 standard; the salt spray resistance is tested according to GB/T1771-2007 standard; the impact resistance is tested according to GB/T1732-1993 standard; the adhesion is tested according to GB/T9286-1998 standard;
the results obtained are shown in the following table:
the data in the table show that the performance indexes of the water-based epoxy zinc-rich paint prepared by the invention on water resistance, salt spray resistance and adhesive force can meet the use requirements; particularly, the paint has excellent storage stability and sag resistance, and the data of the comparative example 1 and the comparative example 2 show that the organic bentonite and the fumed silica are selected as rheological additives, so that the organic bentonite and the fumed silica can play a synergistic promotion role, the problem of sedimentation and agglomeration of zinc powder in the paint is solved, and good leveling property and sag resistance are provided for the paint; thereby improving the weather resistance and impact resistance of the paint film.
In the description of the specification, reference to the description of "one embodiment," "an example," "a specific example" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only, and it will be appreciated by those skilled in the art that various modifications, additions and substitutions can be made to the embodiments described without departing from the scope of the invention as defined in the appended claims.
Claims (6)
1. The water-based epoxy zinc-rich paint comprises a component A and a component B, and is characterized in that the component A comprises the following raw materials in parts by weight: 8-10 parts of water-based epoxy resin, 60-70 parts of zinc powder, 8-10 parts of propylene glycol dimethyl ether, 0.4-0.6 part of wetting agent, 0.7-1 part of dispersing agent, 0.8-1 part of rheological additive and 0.3-0.4 part of polyamide anti-settling agent; the component B comprises a curing agent, deionized water, propylene glycol dimethyl ether, ethylene glycol monobutyl ether and an anti-flash rust agent, and the mass ratio of the components is (5-7:4-5);
wherein the rheological additive is a mixture of organic bentonite and fumed silica, and the mass ratio of the organic bentonite to the fumed silica is 1:1.
2. The water-based epoxy zinc-rich paint according to claim 1, wherein the mass ratio of the component A to the component B is 10.
3. The aqueous epoxy zinc rich paint of claim 1, wherein the flash rust inhibitor is sodium nitrite.
4. The water-based epoxy zinc-rich paint as claimed in claim 1, wherein the zinc powder has a particle size of 800 meshes.
5. The preparation method of the water-based epoxy zinc-rich paint according to claim 1, characterized by comprising the following steps:
preparation of component A: adding the waterborne epoxy resin, the dispersant, the wetting agent and the propylene glycol dimethyl ether into a container according to a certain proportion, stirring at a low speed for 10min, continuously adding the rheological additive and the polyamide anti-settling agent according to a certain proportion, stirring at a high speed for 10-20min, adding the zinc powder into the mixture, and dispersing at a high speed until the fineness is less than 200 meshes;
preparation of the component B: sequentially adding deionized water, propylene glycol dimethyl ether, ethylene glycol monobutyl ether and an anti-flash rust agent into a curing agent, dispersing for 15min at a low speed, and filtering through 200-mesh filter cloth;
the A, B components are mixed evenly according to the proportion, and the water-based epoxy zinc-rich paint can be prepared.
6. The method for preparing the water-based epoxy zinc-rich paint as claimed in claim 5, wherein the low speed is 600r/min and the high speed is 2000r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210926258.9A CN115216205A (en) | 2022-08-03 | 2022-08-03 | Water-based epoxy zinc-rich paint and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210926258.9A CN115216205A (en) | 2022-08-03 | 2022-08-03 | Water-based epoxy zinc-rich paint and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115216205A true CN115216205A (en) | 2022-10-21 |
Family
ID=83616068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210926258.9A Pending CN115216205A (en) | 2022-08-03 | 2022-08-03 | Water-based epoxy zinc-rich paint and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115216205A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107118664A (en) * | 2017-06-14 | 2017-09-01 | 无锡华东锌盾科技有限公司 | Bi-component aqueous epoxy zinc rich primer and preparation method thereof |
-
2022
- 2022-08-03 CN CN202210926258.9A patent/CN115216205A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107118664A (en) * | 2017-06-14 | 2017-09-01 | 无锡华东锌盾科技有限公司 | Bi-component aqueous epoxy zinc rich primer and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100982451B1 (en) | Anti-corrosion ceramic coating material containing nano-sized flakes | |
| CN113234342B (en) | Amino acid grafted graphene oxide filler, preparation method thereof and application of filler in water-based epoxy zinc-rich coating | |
| CN111073507A (en) | Water-based chromium-free zinc-aluminum anticorrosive paint and preparation method thereof | |
| KR20100032360A (en) | Coating compositions comprising bismuth-alloyed zinc | |
| CN103351787A (en) | High-performance rust inhibiting primer for low surface treatment of mechanical equipment and preparation method of high-performance rust inhibiting primer | |
| CN110343443B (en) | Graphene coating and preparation method thereof | |
| CN110922857A (en) | Water-based epoxy zinc-rich anti-rust primer for railway steel bridge and preparation method thereof | |
| CN111393946B (en) | Solvent-free epoxy anticorrosive paint with high operation period and preparation method thereof | |
| CN111647342A (en) | Graphene anticorrosive paint and preparation method thereof | |
| CN116239935B (en) | Solvent-free self-repairing anticorrosive paint based on lithium salt and preparation and use methods thereof | |
| CN103214917B (en) | Marine corrosion-resistant epoxy aluminum-magnesium-nickel rear earth rich nanometer material and preparation method thereof | |
| CN110982312B (en) | Water-based shop primer with excellent initial water resistance and preparation method thereof | |
| CN115216205A (en) | Water-based epoxy zinc-rich paint and preparation method thereof | |
| CN115651481A (en) | Water-based two-component epoxy thick-paste paint for anticorrosive coating and preparation method thereof | |
| CN114181588A (en) | Water-based epoxy zinc-rich primer and preparation method thereof | |
| CN111423752A (en) | Water-based inorganic zinc-rich primer for heavy corrosion protection | |
| CN115216203A (en) | Water-based chromium-free Dacromet green coating and preparation method thereof | |
| CN115491090A (en) | Environment-friendly water-based single-component fluorescent paint and preparation method thereof | |
| CN109321126A (en) | A kind of solvent-free anticorrosive paint and preparation method thereof | |
| CN108329807A (en) | A kind of single-component water-based acrylic acid -ol acid graphene anticorrosive paint of quick-drying | |
| CN113881311A (en) | Water-based bi-component epoxy anticorrosive paint and preparation method thereof | |
| CN111040566A (en) | Water-based epoxy anti-rust primer and preparation method thereof | |
| CN115074024B (en) | High-corrosion-resistance water-based chromium-free Dacromet coating with sound absorption function and preparation process thereof | |
| CN108485343A (en) | A kind of aqueous static conductive epoxy zinc rich primer | |
| CN103242737B (en) | Marine heavy anti-corrosion epoxy nano coating rich in aluminium, manganese and rare earth and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221021 |