CN116694165A - Corrosion-resistant water-based paint and preparation method thereof - Google Patents
Corrosion-resistant water-based paint and preparation method thereof Download PDFInfo
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- CN116694165A CN116694165A CN202310833780.7A CN202310833780A CN116694165A CN 116694165 A CN116694165 A CN 116694165A CN 202310833780 A CN202310833780 A CN 202310833780A CN 116694165 A CN116694165 A CN 116694165A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000003973 paint Substances 0.000 title claims abstract description 55
- 230000007797 corrosion Effects 0.000 title claims abstract description 30
- 238000005260 corrosion Methods 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title description 6
- 239000000049 pigment Substances 0.000 claims abstract description 37
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 18
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 16
- 239000012188 paraffin wax Substances 0.000 claims abstract description 16
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 16
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 15
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 15
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 15
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 10
- 229920003180 amino resin Polymers 0.000 claims abstract description 10
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920000570 polyether Polymers 0.000 claims abstract description 10
- 239000013530 defoamer Substances 0.000 claims abstract description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000004417 polycarbonate Substances 0.000 claims description 14
- 229920000515 polycarbonate Polymers 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 12
- 238000004040 coloring Methods 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 4
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- FPSFKBGHBCHTOE-UHFFFAOYSA-N sodium 3-hydroxy-4-[(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)diazenyl]naphthalene-1-sulfonic acid Chemical compound [Na+].O=C1C(N=NC=2C3=CC=CC=C3C(=CC=2O)S(O)(=O)=O)C(C)=NN1C1=CC=CC=C1 FPSFKBGHBCHTOE-UHFFFAOYSA-N 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 239000002518 antifoaming agent Substances 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 abstract description 4
- 239000003960 organic solvent Substances 0.000 abstract description 3
- 239000011247 coating layer Substances 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000000945 filler Substances 0.000 description 6
- 238000011056 performance test Methods 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- -1 rheology aids Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000006115 industrial coating Substances 0.000 description 1
- 238000004519 manufacturing process Methods 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
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 235000020354 squash Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 238000004383 yellowing Methods 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- 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
- 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
- C09D7/65—Additives macromolecular
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 corrosion-resistant water-based paint comprises the following components in parts by weight: 30 to 40 percent of acrylic resin and polyurethane resin, 20 to 30 percent of water, 10 to 20 percent of amino resin, 5 to 10 percent of ethanol, 0.2 to 0.4 percent of polyethylene glycol, microcrystalline paraffin and butyl stearate, 0.1 to 0.2 percent of dimethyl sulfoxide, 0.1 to 0.2 percent of pH regulator AMP-95, 0.1 to 0.2 percent of polyether defoamer, 1.5 to 3.5 percent of dakangning z-6121 and 10 to 20 percent of pigment. The water-based paint can be diluted by water without using any chemical organic solvent, so that the water-based paint is more environment-friendly and healthy, has better wear resistance which is even several times of that of an oily paint, has good adaptability to materials, strong adsorption force of a coating layer and good conductivity, can be directly constructed on the surface of a dark and moist substrate, can form a more stable water-based paint film in a short time, and has better corrosion resistance and water erosion resistance.
Description
Technical Field
The invention relates to a water-based paint, in particular to a corrosion-resistant water-based paint and a preparation method thereof.
Background
The water paint is water paint with water as diluent and no organic solvent, has no harm to human body, no smell, no toxicity, no environmental pollution, and has the features of being yellowing resistant, wear resistant, ageing resistant, water resistant, etc. the water paint may be classified into three kinds, water soluble paint, water dispersible paint, water dilutable paint, etc. The water-based paint mainly comprises the following components: film forming aids, polymer emulsions or dispersions, wetting agents, suds suppressors and defoamers, leveling agents, thickeners, rheology aids, dispersants, colorants, fillers, wax emulsions or powders, preservatives, pH adjusting agents, additives and the like.
The water paint, namely the water paint, has the characteristics of energy conservation, environmental protection, incombustibility, explosion prevention, ultralow emission, low carbon, health and the like, and can be widely used for various materials such as woodware, metal, industrial coating, plastics, glass, building surfaces and the like. The water-based industrial paint is very beneficial to environment and constructors, and can also lower the brand price of the water-based industrial paint in foreign market at present, but the preparation and processing of the water-based industrial paint are more difficult than those of the traditional oil paint, and the production and brushing processes are also very different, and the oil paint has the advantages of strong adhesive capacity, quick drying, good corrosion resistance and water erosion resistance, but is not environment-friendly as the water-based paint, so that the water-based paint has the same or even higher corrosion resistance as the oil paint, so that the problem which needs to be solved urgently in the industry at present is always solved.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a corrosion-resistant water-based paint.
In order to achieve the above purpose, the technical scheme of the invention is as follows: the corrosion-resistant water-based paint comprises the following components in parts by weight: 30 to 40 percent of acrylic resin and polyurethane resin, 20 to 30 percent of water, 10 to 20 percent of amino resin, 5 to 10 percent of ethanol, 0.2 to 0.4 percent of polyethylene glycol, microcrystalline paraffin and butyl stearate, 0.1 to 0.2 percent of dimethyl sulfoxide, 0.1 to 0.2 percent of pH regulator AMP-95, 0.1 to 0.2 percent of polyether defoamer, 1.5 to 3.5 percent of dakangning z-6121 and 10 to 20 percent of pigment.
Further, the weight ratio of the acrylic resin to the polyurethane resin is 1:1, and the weight ratio of the polyethylene glycol, the microcrystalline paraffin and the butyl stearate is 1:1:1.
Further, the pigment also contains polycarbonate, and the weight ratio of the polycarbonate to other coloring materials in the pigment is 1:1.
The preparation method of the corrosion-resistant water-based paint comprises the following steps:
starting a dispersing machine, controlling the rotating speed of the dispersing machine to be 300-500 rpm, sequentially adding acrylic resin, polyurethane resin, polyethylene glycol, microcrystalline paraffin, butyl stearate, dimethyl sulfoxide and a pH regulator AMP-95, continuously rotating the dispersing machine for 10 minutes, and then standing and cooling to room temperature;
step two, regulating the rotating speed of the dispersing machine to 500-600 rpm, adding pigment and polyether type defoaming agent for stirring, gradually increasing the temperature in the stirring process until stirring for 15 minutes, and sanding with a horizontal sand mill until the fineness is less than or equal to 15 microns;
and thirdly, maintaining the rotating speed of the dispersing machine at 100-200 rpm, adding amino resin and ethanol when the temperature of the materials in the dispersing machine is less than 50 ℃, then adding water to adjust the viscosity of the materials in the dispersing machine to prepare the water-based paint, mixing and stirring for 5 minutes, sampling and detecting various performances, and obtaining the corrosion-resistant water-based paint after being qualified, wherein the corrosion-resistant water-based paint is used together with the dakangnin z-6121 when being smeared.
Through the arrangement, the dimethyl sulfoxide reduces the surface tension of the system so as to promote the wetting of a substrate or pigment filler, can effectively promote the wetting and surface leveling property of the coating on the surface of the substrate and the wetting and dispersion of the pigment filler, so that pigment filler particles are dispersed into primary particles under the action of shearing force, and pigment filler is stably dispersed in the system for a long time without agglomeration under the action of a dispersing agent through electrostatic repulsion and steric hindrance effects;
the inventive water-based paint is used together with the Dow Corning Z-6121 when being smeared, the Dow Corning Z-6121 has a wider effective concentration range, and can obtain good performance under general conditions without furnace temperature curing. The microcrystalline paraffin has larger relative molecular mass, a plurality of isomers and good lubricity and thermal stability, but has poor dispersibility, and by being used together with polyethylene glycol, butyl stearate and dimethyl sulfoxide, the pigment and filler can be stably dispersed in a system for a long time without agglomeration, so that the stability of the water-based paint is improved, the color transparency and saturation of the water-based paint are improved, the covering capacity of the water-based paint is enhanced, and a more stable water-based paint film is formed, thereby having better corrosion resistance and water erosion resistance.
The invention has the following advantages: the water-based paint can be diluted by water without using any chemical organic solvent, so that the water-based paint is more environment-friendly and healthy, has better wear resistance which is even several times of that of an oily paint, has good adaptability to materials, strong adsorption force of a coating layer and good conductivity, can be directly constructed on the surface of a dark and moist substrate, can form a more stable water-based paint film in a short time, and has better corrosion resistance and water erosion resistance.
Detailed Description
Example 1
The corrosion-resistant water-based paint comprises the following components in parts by weight: 30 parts of acrylic resin and polyurethane resin, 20 parts of water, 10 parts of amino resin, 5 parts of ethanol, 0.2 part of polyethylene glycol, microcrystalline paraffin and butyl stearate, 0.1 part of dimethyl sulfoxide, 0.1 part of pH regulator AMP-95, 0.1 part of polyether defoamer, 1.5 parts of Dow Corning Z-6121 and 10 parts of pigment. And the weight ratio of the acrylic resin to the polyurethane resin is 1:1, and the weight ratio of the polyethylene glycol, the microcrystalline paraffin and the butyl stearate is 1:1:1.
The pigment is one or more of titanium dioxide, iron oxide red, iron oxide yellow, phthalocyanine blue, phthalocyanine green, molybdenum chrome red and carbon black.
The pigment also contains polycarbonate, and the weight ratio of the polycarbonate to other coloring materials in the pigment is 1:1.
The coloring material in the pigment is in powder form, and is mixed with polycarbonate after being dried, and the pigment is formed after mixing.
Example 2
The corrosion-resistant water-based paint comprises the following components in parts by weight: 40 parts of acrylic resin and polyurethane resin, 30 parts of water, 20 parts of amino resin, 10 parts of ethanol, 0.4 part of polyethylene glycol, microcrystalline paraffin and butyl stearate, 0.2 part of dimethyl sulfoxide, 0.2 part of pH regulator AMP-95, 0.2 part of polyether defoamer, 3.5 parts of Dow Corning Z-6121 and 20 parts of pigment. And the weight ratio of the acrylic resin to the polyurethane resin is 1:1, and the weight ratio of the polyethylene glycol, the microcrystalline paraffin and the butyl stearate is 1:1:1.
The pigment is one or more of titanium dioxide, iron oxide red, iron oxide yellow, phthalocyanine blue, phthalocyanine green, molybdenum chrome red and carbon black.
The pigment also contains polycarbonate, and the weight ratio of the polycarbonate to other coloring materials in the pigment is 1:1.
The coloring material in the pigment is in powder form, and is mixed with polycarbonate after being dried, and the pigment is formed after mixing.
Example 3
The corrosion-resistant water-based paint comprises the following components in parts by weight: 35 parts of acrylic resin and polyurethane resin, 25 parts of water, 15 parts of amino resin, 8 parts of ethanol, 0.3 part of polyethylene glycol, microcrystalline paraffin and butyl stearate, 0.2 part of dimethyl sulfoxide, 0.2 part of pH regulator AMP-95, 0.2 part of polyether defoamer, 2.1 parts of Dow Corning Z-6121 and 15 parts of pigment. And the weight ratio of the acrylic resin to the polyurethane resin is 1:1, and the weight ratio of the polyethylene glycol, the microcrystalline paraffin and the butyl stearate is 1:1:1.
The pigment is one or more of titanium dioxide, iron oxide red, iron oxide yellow, phthalocyanine blue, phthalocyanine green, molybdenum chrome red and carbon black.
The pigment also contains polycarbonate, and the weight ratio of the polycarbonate to other coloring materials in the pigment is 1:1.
The coloring material in the pigment is in powder form, and is mixed with polycarbonate after being dried, and the pigment is formed after mixing.
Example 4
The preparation method of the corrosion-resistant water-based paint of the embodiment 1-3 comprises the following steps:
starting a dispersing machine, controlling the rotating speed of the dispersing machine to be 300-500 rpm, sequentially adding acrylic resin, polyurethane resin, polyethylene glycol, microcrystalline paraffin, butyl stearate, dimethyl sulfoxide and a pH regulator AMP-95, continuously rotating the dispersing machine for 10 minutes, and then standing and cooling to room temperature;
step two, regulating the rotating speed of the dispersing machine to 500-600 rpm, adding pigment and polyether type defoaming agent for stirring, gradually increasing the temperature in the stirring process until stirring for 15 minutes, and sanding with a horizontal sand mill until the fineness is less than or equal to 15 microns;
and thirdly, maintaining the rotating speed of the dispersing machine at 100-200 rpm, adding amino resin and ethanol when the temperature of the materials in the dispersing machine is less than 50 ℃, then adding water to adjust the viscosity of the materials in the dispersing machine to prepare the water-based paint, mixing and stirring for 5 minutes, sampling and detecting various performances, and obtaining the corrosion-resistant water-based paint after being qualified, wherein the corrosion-resistant water-based paint is used together with the dakangnin z-6121 when being smeared.
Performance test: examples 1 to 3 were each coated on a 10 x 5cm steel workpiece with a rust thickness of 0.8mm and dried at room temperature for 20min for testing. The product of the invention is tested for water resistance, alkali resistance, adhesive force, scrubbing resistance, rust prevention, corrosion prevention and other performances, wherein the main performance tests refer to GB/T1725-2007, GB/T1728-1989, GB/T5210-2006, GB/T18178-2000 and GB/T23993-2009.
The results of the performance tests are shown in the following table:
it can be seen from the above table that the present invention has better corrosion and water erosion resistance, and has a 0-grade adhesion, which is stronger than the current water-based paint of class 1 (ISO grade: 1=astm grade: 4B, which means that there is flaking of paint from small pieces at the intersections of the cuts, and that the actual breakage in the cut areas is less than or equal to 5%. ISO grade: 0=astm grade: 5B, which means that there is no flaking at the edges of the grid, and that the cut edges are perfectly smooth).
The foregoing is illustrative of the present invention and is not to be construed as limiting the scope of the invention. Any equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this invention, and are intended to be within the scope of this invention.
Claims (7)
1. The corrosion-resistant water-based paint is characterized by comprising the following components in parts by weight: 30 to 40 percent of acrylic resin and polyurethane resin, 20 to 30 percent of water, 10 to 20 percent of amino resin, 5 to 10 percent of ethanol, 0.2 to 0.4 percent of polyethylene glycol, microcrystalline paraffin and butyl stearate, 0.1 to 0.2 percent of dimethyl sulfoxide, 0.1 to 0.2 percent of pH regulator AMP-95, 0.1 to 0.2 percent of polyether defoamer, 1.5 to 3.5 percent of dakangning z-6121 and 10 to 20 percent of pigment.
2. The corrosion-resistant water-based paint as claimed in claim 1, wherein the weight proportions of the components are as follows: 35 parts of acrylic resin and polyurethane resin, 25 parts of water, 15 parts of amino resin, 8 parts of ethanol, 0.3 part of polyethylene glycol, microcrystalline paraffin and butyl stearate, 0.2 part of dimethyl sulfoxide, 0.2 part of pH regulator AMP-95, 0.2 part of polyether defoamer, 2.1 parts of Dow Corning Z-6121 and 15 parts of pigment.
3. A corrosion resistant aqueous coating as claimed in claim 1 or 2, characterized in that: the weight ratio of the acrylic resin to the polyurethane resin is 1:1, and the weight ratio of the polyethylene glycol, the microcrystalline paraffin and the butyl stearate is 1:1:1.
4. A corrosion resistant aqueous coating as claimed in claim 1 or 2, characterized in that: the pigment is one or more of titanium dioxide, iron oxide red, iron oxide yellow, phthalocyanine blue, phthalocyanine green, molybdenum chrome red and carbon black.
5. A corrosion resistant aqueous coating as recited in claim 4, wherein: the pigment also contains polycarbonate, and the weight ratio of the polycarbonate to other coloring materials in the pigment is 1:1.
6. A corrosion resistant aqueous coating as recited in claim 5, wherein: the coloring material in the pigment is in powder form, and is mixed with polycarbonate after being dried, and the pigment is formed after mixing.
7. A method for preparing a corrosion-resistant aqueous coating according to claim 1 or 2, comprising the steps of:
starting a dispersing machine, controlling the rotating speed of the dispersing machine to be 300-500 rpm, sequentially adding acrylic resin, polyurethane resin, polyethylene glycol, microcrystalline paraffin, butyl stearate, dimethyl sulfoxide and a pH regulator AMP-95, continuously rotating the dispersing machine for 10 minutes, and then standing and cooling to room temperature;
step two, regulating the rotating speed of the dispersing machine to 500-600 rpm, adding pigment and polyether type defoaming agent for stirring, gradually increasing the temperature in the stirring process until stirring for 15 minutes, and sanding with a horizontal sand mill until the fineness is less than or equal to 15 microns;
and thirdly, maintaining the rotating speed of the dispersing machine at 100-200 rpm, adding amino resin and ethanol when the temperature of the materials in the dispersing machine is less than 50 ℃, then adding water to adjust the viscosity of the materials in the dispersing machine to prepare the water-based paint, mixing and stirring for 5 minutes, sampling and detecting various performances, and obtaining the corrosion-resistant water-based paint after being qualified, wherein the corrosion-resistant water-based paint is used together with the dakangnin z-6121 when being smeared.
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