CN113150661B - Molten iron desulphurization slag-based water-based primer-topcoat anticorrosion paint and preparation method thereof - Google Patents
Molten iron desulphurization slag-based water-based primer-topcoat anticorrosion paint and preparation method thereof Download PDFInfo
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- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
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- 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
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
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- C08K3/20—Oxides; Hydroxides
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- C08K3/20—Oxides; Hydroxides
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- C08K2003/2272—Ferric oxide (Fe2O3)
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Abstract
The invention discloses a molten iron desulphurization slag-based water-based primer-topcoat integrated anticorrosive paint and a preparation method thereof, wherein the water-based primer-topcoat integrated anticorrosive paint comprises the following raw materials in percentage by mass: 25.0-35.0 percent of water-based alkyd resin, 10.0-20.0 percent of molten iron desulphurization slag, 5.0-10.0 percent of talcum powder, 7.5-12.5 percent of precipitated barium sulfate, 2.5-7.5 percent of propylene glycol methyl ether acetate, 5.0-15.0 percent of composite auxiliary agent, 0.5-1.0 percent of steel slag grinding aid and 17.5-32.5 percent of water. The invention realizes the reduction of environmental burden and the improvement of environmental protection performance, and solves the problems of high price of the existing pigment and filler and two procedures of priming paint and finishing paint during the construction of the anticorrosive paint.
Description
Technical Field
The invention relates to the field of water-based anticorrosive coatings, in particular to a molten iron desulphurization slag-based water-based primer-topcoat anticorrosive coating and a preparation method thereof.
Background
The molten iron desulphurization slag is solid waste generated in the iron making process of iron and steel enterprises, wherein the main chemical component is CaO、Fe2O3、SiO2. At present, a large amount of molten iron desulphurization slag is mainly stockpiled in the open air, not only precious land is occupied, but also the surrounding environment and underground water are polluted, so that how to utilize the molten iron desulphurization slag with large scale and high added value to realize environment reduction and enterprise synergy is a problem which needs to be solved urgently.
The pigment and filler used in the anticorrosive paint mainly comprises an antirust pigment and filler, a coloring pigment and filler and a body pigment and filler, the three pigments and fillers have different functions in the anticorrosive paint, and the antirust pigment and filler mainly plays a role in enhancing the corrosion resistance of the anticorrosive paint, so that the service life of the anticorrosive paint is prolonged; the coloring pigment and filler mainly play a role in coloring, so that the antirust coating has a specific color; the body pigment and filler mainly play a role in filling, so that the solid content and the coverage rate of the antirust coating are improved. At present, on one hand, pigment and filler of the coating contain a large amount of heavy metal oxides such as chromium, zinc, lead and the like, and enter the coating along with the pigment and filler in the using process, so that the problem of serious environmental pollution is caused; on the other hand, the price of the paint pigment and filler is high, and natural resources are consumed. In view of the above problems, the hot metal desulfurization slag has a high Fe content2O3Has corrosion resistance and contains higher CaO and SiO2Is an essential component of the constitutional pigment and filler.
Prior patent application No. CN 201911164042.8: the modified steel slag-based pigment and filler replaces iron oxide red metal antirust coating and the preparation method thereof disclose the modified steel slag-based pigment and filler replaces iron oxide red metal antirust coating, and the solvent of the modified steel slag-based pigment and filler replaces iron oxide red metal antirust coating is any one or combination of acetone, cyclohexanone, xylene, ethyl ester and butyl ester, so that the solvent of the metal antirust coating is an organic solvent and belongs to oily antirust coating. Although the oily rust inhibitive paint has good rust inhibitive performance, the oily rust inhibitive paint has poor environmental protection and is increasingly restricted in use.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the molten iron desulphurization slag-based water-based primer-topcoat integrated anticorrosive coating and the preparation method thereof, wherein the water-based primer-topcoat integrated anticorrosive coating can reduce the environment burden, improve the environmental protection performance, and solve the problems of high price of the existing pigment and filler and the problem of two procedures of primer and topcoat in the construction of the anticorrosive coating.
The invention is realized by the following technical scheme: the molten iron desulphurization slag-based water-based primer-topcoat integrated anticorrosive paint comprises the following raw materials in percentage by mass:
the composite auxiliary agent is a mixture of alkylphenol polyoxyethylene ether, polyether modified polysiloxane and polysiloxane defoaming agent, the mass ratio of the alkylphenol polyoxyethylene ether, the polyether modified polysiloxane and the polysiloxane defoaming agent is 3:2:1-1:2:3,
the steel slag grinding aid is a mixture of phosphoric acid, triisopropanolamine, triethanolamine, glycerol and ethylene glycol, and the mass ratio of the phosphoric acid, the triisopropanolamine, the triethanolamine, the glycerol and the ethylene glycol is 5:4:3:2:1-1:2:3:4: 5.
Further: the grain size of the molten iron desulphurization slag is less than 3mm, and the molten iron desulphurization slag comprises the following chemical components in percentage by mass: na (Na)2O1.02％、MgO3.88％、Al2O33.11％、SiO210.99％、P2O50.65％、S1.24％、CaO56.86％、Cl0.56％、MnO2.17％、Fe2O318.62% and the other 0.90%.
Further: the talcum powder is of industrial grade, and the fineness of the talcum powder is less than 800 meshes.
Further: the precipitated barium sulfate is of industrial grade, the mass fraction of the precipitated barium sulfate is 99.9%, and the fineness of the precipitated barium sulfate is less than 800 meshes.
A preparation method of the molten iron desulphurization slag-based water-based primer-topcoat integrated anticorrosive coating comprises the following steps:
s1, mixing molten iron desulphurization slag, a steel slag grinding aid and propylene glycol methyl ether acetate, and carrying out ball milling for 24-36 h at a rotating speed of 500-750 r/min by using a high-energy ball mill to obtain modified molten iron desulphurization slag superfine powder with the fineness of less than 800 meshes;
s2, mixing the modified molten iron desulphurization residue superfine powder with water-based alkyd resin and water, and stirring for 60-90 min at the normal temperature by using a constant-temperature magnetic stirrer at the rotating speed of 300-500 r/min to obtain a hydrophilic modified molten iron desulphurization residue superfine powder solution;
s3, mixing the hydrophilic modified molten iron desulphurization residue superfine powder solution with talcum powder and precipitated barium sulfate, and stirring at the normal temperature by using a constant-temperature magnetic stirrer at the rotating speed of 300-500 r/min for 90-120 min to obtain a molten iron desulphurization residue base aqueous primer-topcoat combined anticorrosive paint precursor;
s4, mixing the precursor of the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating with a complexing agent, and stirring at the normal temperature at a rotating speed of 300-500 r/min for 60-90 min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating.
The scientific principle of the invention is as follows:
(1) surfactant molecules of glycerol, glycol, triethanolamine and triethanolamine in the steel slag grinding aid are utilized to form a monomolecular adsorption film on the surface of molten iron desulphurization slag to be ground, the molten iron desulphurization slag is broken in the crushing process, and free electrovalence bonds generated on the broken surface of the molten iron desulphurization slag are neutralized with ions or molecules provided by the molten iron desulphurization slag functional agent, so that the aggregation tendency of the molten iron desulphurization slag micropowder is eliminated or weakened, and the broken surface is prevented from being compounded.
(2) Phosphoric acid in the steel slag grinding aid removes part of CaO in the molten iron desulphurization slag, so that the specific surface area, the pore volume and the pore diameter of the molten iron desulphurization slag are favorably improved, a porous system is further formed, the wetting action and the adsorption action of the steel slag grinding aid on the molten iron desulphurization slag are favorably realized, the surface free energy of the molten iron desulphurization slag is reduced, the grain interstitial force of the molten iron desulphurization slag is weakened, the extrusion cracking crack stress is generated, and the effect of destroying the hardness of the molten iron desulphurization slag is achieved. Meanwhile, the phosphoric acid can reduce the alkalinity of the superfine powder of the molten iron desulphurization slag, and the problem of rapid condensation of the aqueous resin caused by high alkalinity is solved, so that the compatibility with the aqueous resin is improved.
(3) The water-based alkyd resin forms a hydrophilic coating layer on the surface of the molten iron desulphurization slag superfine powder, so that the water-based alkyd resin can isolate the reaction with water, reduce the agglomeration of the molten iron desulphurization slag superfine powder, improve the dispersion effect of the modified molten iron desulphurization slag superfine powder, innovatively realize the compatibility of the modified molten iron desulphurization slag superfine powder and a water-based system, realize the application of the modified molten iron desulphurization slag superfine powder in water-based paint, and particularly obviously influence the stability of a water-based anticorrosive paint.
(4) The molecules of the propylene glycol monomethyl ether acetate not only have nonpolar functional groups, but also have polar functional groups, and not only have ether bonds, but also have carbonyl groups, so that the propylene glycol monomethyl ether acetate can be dissolved with the steel slag grinding aid mainly containing organic matters on one hand, and can be dissolved with water-based alkyd resin and water on the other hand. Therefore, the propylene glycol methyl ether acetate can be used as a double-property solvent, so that the waterborne alkyd resin can be better wrapped on the surface of the molten iron desulphurization slag superfine powder modified by the steel slag grinding aid.
(5) The prior anti-corrosive paint is divided into two procedures of primer and finish paint during construction, and the adsorption force with a base material can be improved by utilizing the porous structure of the molten iron desulphurization slag superfine powder, so that the primer performance is realized; meanwhile, the high Fe content in the molten iron desulphurization slag is utilized2O3Has good corrosion resistance and realizes the performance of finish paint.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention solves the problems of high price and natural resource consumption of the existing pigment and filler and the problem of two working procedures of priming paint and finishing paint during the construction of the anticorrosive paint.
2. The invention utilizes the molten iron desulphurization slag to prepare the water-based primer-topcoat combined anticorrosive paint, expands the application of the molten iron desulphurization slag in the water-based anticorrosive paint, and realizes the utilization of high added value.
3. The molten iron desulphurization slag-based water-based primer-topcoat integrated anticorrosive coating and the preparation method thereof meet the policy requirements of relevant energy conservation, environmental protection and circular economy.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to the following examples.
Example 1
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
the waterborne alkyd resin is of industrial grade.
The grain size of the molten iron desulphurization slag is less than 3mm, and the molten iron desulphurization slag comprises the following chemical components in percentage by mass: na (Na)2O1.02％、MgO3.88％、Al2O33.11％、SiO210.99％、P2O50.65％、S1.24％、CaO56.86％、Cl0.56％、MnO2.17％、Fe2O318.62% and the other 0.90%.
The talcum powder is of industrial grade, and the fineness of the talcum powder is less than 800 meshes.
The precipitated barium sulfate is of industrial grade, the mass fraction of the precipitated barium sulfate is 99.9%, and the fineness of the precipitated barium sulfate is less than 800 meshes.
The propylene glycol methyl ether acetate is industrial grade.
The composite auxiliary agent is a mixture of alkylphenol polyoxyethylene ether, polyether modified polysiloxane and polysiloxane defoaming agent, and the mass ratio of the alkylphenol polyoxyethylene ether, the polyether modified polysiloxane and the polysiloxane defoaming agent is 3:2: 1.
The steel slag grinding aid is a mixture of phosphoric acid, triisopropanolamine, triethanolamine, glycerol and glycol in a ratio of 1:1:1:1: 1.
S1, mixing the molten iron desulphurization slag, a steel slag grinding aid and propylene glycol methyl ether acetate, and performing ball milling for 27 hours at a rotating speed of 700r/min by using a high-energy ball mill to obtain modified molten iron desulphurization slag superfine powder with the fineness of less than 800 meshes.
S2, mixing the modified molten iron desulphurization residue superfine powder with water-based alkyd resin and water, and stirring for 60min at the normal temperature at the rotating speed of 500r/min by using a constant-temperature magnetic stirrer to obtain a hydrophilic modified molten iron desulphurization residue superfine powder solution.
And S3, mixing the hydrophilic modified molten iron desulphurization residue superfine powder solution with talcum powder and precipitated barium sulfate, and stirring for 120min at normal temperature at a rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization residue base aqueous primer-topcoat combined anticorrosive paint precursor.
And S4, mixing the precursor of the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating with the complexing agent, and stirring for 70min at normal temperature at the rotating speed of 300r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating.
Example 2
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
the waterborne alkyd resin is of industrial grade.
The grain size of the molten iron desulphurization slag is less than 3mm, and the molten iron desulphurization slag comprises the following chemical components in percentage by mass: na (Na)2O1.02％、MgO3.88％、Al2O33.11％、SiO210.99％、P2O50.65％、S1.24％、CaO56.86％、Cl0.56％、MnO2.17％、Fe2O318.62% and the other 0.90%.
The talcum powder is of industrial grade, and the fineness of the talcum powder is less than 800 meshes.
The precipitated barium sulfate is of industrial grade, the mass fraction of the precipitated barium sulfate is 99.9%, and the fineness of the precipitated barium sulfate is less than 800 meshes.
The propylene glycol methyl ether acetate is industrial grade.
The composite auxiliary agent is a mixture of alkylphenol polyoxyethylene ether, polyether modified polysiloxane and polysiloxane defoaming agent, and the mass ratio of the alkylphenol polyoxyethylene ether, the polyether modified polysiloxane and the polysiloxane defoaming agent is 1:2: 3.
The steel slag grinding aid is a mixture of phosphoric acid, triisopropanolamine, triethanolamine, glycerol and glycol, wherein the ratio of the phosphoric acid to the triisopropanolamine to the triethanolamine to the glycerol to the glycol is 1:2:3:4: 5.
S1, mixing the molten iron desulphurization slag, a steel slag grinding aid and propylene glycol methyl ether acetate, and carrying out ball milling for 36h at the rotating speed of 550r/min by using a high-energy ball mill to obtain modified molten iron desulphurization slag superfine powder with the fineness of less than 800 meshes.
S2, mixing the modified molten iron desulphurization residue superfine powder with water-based alkyd resin and water, and stirring for 80min at the normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain a hydrophilic modified molten iron desulphurization residue superfine powder solution.
And S3, mixing the hydrophilic modified molten iron desulphurization residue superfine powder solution with talcum powder and precipitated barium sulfate, and stirring for 100min at normal temperature at the rotating speed of 300r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization residue base aqueous primer-topcoat combined anticorrosive paint precursor.
And S4, mixing the precursor of the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating with the complexing agent, and stirring for 90min at the normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating.
Example 3
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
the waterborne alkyd resin is of industrial grade.
The grain size of the molten iron desulphurization slag is less than 3mm, and the molten iron desulphurization slag comprises the following chemical components in percentage by mass: na (Na)2O1.02％、MgO3.88％、Al2O33.11％、SiO210.99％、P2O50.65％、S1.24％、CaO56.86％、Cl0.56％、MnO2.17％、Fe2O318.62% and the other 0.90%.
The talcum powder is of industrial grade, and the fineness of the talcum powder is less than 800 meshes.
The precipitated barium sulfate is of industrial grade, the mass fraction of the precipitated barium sulfate is 99.9%, and the fineness of the precipitated barium sulfate is less than 800 meshes.
The propylene glycol methyl ether acetate is industrial grade.
The composite auxiliary agent is a mixture of alkylphenol polyoxyethylene ether, polyether modified polysiloxane and polysiloxane defoaming agent, and the mass ratio of the alkylphenol polyoxyethylene ether, the polyether modified polysiloxane and the polysiloxane defoaming agent is 1:1: 1.
The steel slag grinding aid is a mixture of phosphoric acid, triisopropanolamine, triethanolamine, glycerol and glycol, wherein the ratio of phosphoric acid to triisopropanolamine to triethanolamine to glycerol to glycol is 5:4:3:2: 1.
S1, mixing the molten iron desulphurization slag, a steel slag grinding aid and propylene glycol methyl ether acetate, and performing ball milling for 30 hours at a rotation speed of 750r/min by using a high-energy ball mill to obtain modified molten iron desulphurization slag superfine powder with the fineness of less than 800 meshes.
S2, mixing the modified molten iron desulphurization residue superfine powder with water-based alkyd resin and water, and stirring for 90min at normal temperature at the rotating speed of 300r/min by using a constant-temperature magnetic stirrer to obtain a hydrophilic modified molten iron desulphurization residue superfine powder solution.
And S3, mixing the hydrophilic modified molten iron desulphurization residue superfine powder solution with talcum powder and precipitated barium sulfate, and stirring for 90min at normal temperature at a rotating speed of 500r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization residue base aqueous primer-topcoat combined anticorrosive paint precursor.
And S4, mixing the precursor of the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating with a complexing agent, and stirring for 80min at a rotating speed of 500r/min by using a constant-temperature magnetic stirrer at normal temperature to obtain the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating.
Example 4
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
the waterborne alkyd resin is of industrial grade.
The grain size of the molten iron desulphurization slag is less than 3mm, and the molten iron desulphurization slag comprises the following chemical components in percentage by mass: na (Na)2O1.02％、MgO3.88％、Al2O33.11％、SiO210.99％、P2O50.65％、S1.24％、CaO56.86％、Cl0.56％、MnO2.17％、Fe2O318.62% and the other 0.90%.
The talcum powder is of industrial grade, and the fineness of the talcum powder is less than 800 meshes.
The precipitated barium sulfate is of industrial grade, the mass fraction of the precipitated barium sulfate is 99.9%, and the fineness of the precipitated barium sulfate is less than 800 meshes.
The propylene glycol methyl ether acetate is industrial grade.
The composite auxiliary agent is a mixture of alkylphenol polyoxyethylene ether, polyether modified polysiloxane and polysiloxane defoaming agent, and the mass ratio of the alkylphenol polyoxyethylene ether, the polyether modified polysiloxane and the polysiloxane defoaming agent is 1:2: 3.
The steel slag grinding aid is a mixture of phosphoric acid, triisopropanolamine, triethanolamine, glycerol and glycol, wherein the ratio of phosphoric acid to triisopropanolamine to triethanolamine to glycerol to glycol is 5:4:3:2: 1.
S1, mixing the molten iron desulphurization slag, a steel slag grinding aid and propylene glycol methyl ether acetate, and performing ball milling for 24 hours at a rotating speed of 600r/min by using a high-energy ball mill to obtain modified molten iron desulphurization slag superfine powder with the fineness of less than 800 meshes.
S2, mixing the modified molten iron desulphurization residue superfine powder with water-based alkyd resin and water, and stirring for 70min at normal temperature at the rotating speed of 300r/min by using a constant-temperature magnetic stirrer to obtain a hydrophilic modified molten iron desulphurization residue superfine powder solution.
And S3, mixing the hydrophilic modified molten iron desulphurization residue superfine powder solution with talcum powder and precipitated barium sulfate, and stirring for 60min at normal temperature at a rotating speed of 300r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization residue base aqueous primer-topcoat combined anticorrosive paint precursor.
And S4, mixing the precursor of the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating with a complexing agent, and stirring for 60min at a rotation speed of 500r/min by using a constant-temperature magnetic stirrer at normal temperature to obtain the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating.
Example 5
The waterborne alkyd resin is of industrial grade.
The grain size of the molten iron desulphurization slag is less than 3mm, and the molten iron desulphurization slag comprises the following chemical components in percentage by mass: na (Na)2O1.02％、MgO3.88％、Al2O33.11％、SiO210.99％、P2O50.65％、S1.24％、CaO56.86％、Cl0.56％、MnO2.17％、Fe2O318.62% and the other 0.90%.
The talcum powder is of industrial grade, and the fineness of the talcum powder is less than 800 meshes.
The precipitated barium sulfate is of industrial grade, the mass fraction of the precipitated barium sulfate is 99.9%, and the fineness of the precipitated barium sulfate is less than 800 meshes.
The propylene glycol methyl ether acetate is industrial grade.
The composite auxiliary agent is a mixture of alkylphenol polyoxyethylene ether, polyether modified polysiloxane and polysiloxane defoaming agent, and the mass ratio of the alkylphenol polyoxyethylene ether, the polyether modified polysiloxane and the polysiloxane defoaming agent is 3:2: 1.
The steel slag grinding aid is a mixture of phosphoric acid, triisopropanolamine, triethanolamine, glycerol and glycol, wherein the ratio of the phosphoric acid to the triisopropanolamine to the triethanolamine to the glycerol to the glycol is 1:2:3:4: 5.
S1, mixing the molten iron desulphurization slag, a steel slag grinding aid and propylene glycol methyl ether acetate, and carrying out ball milling for 33h at a rotating speed of 500r/min by using a high-energy ball mill to obtain modified molten iron desulphurization slag superfine powder with the fineness of less than 800 meshes.
S2, mixing the modified molten iron desulphurization residue superfine powder with water-based alkyd resin and water, and stirring for 60min at the normal temperature at the rotating speed of 500r/min by using a constant-temperature magnetic stirrer to obtain a hydrophilic modified molten iron desulphurization residue superfine powder solution.
And S3, mixing the hydrophilic modified molten iron desulphurization residue superfine powder solution with talcum powder and precipitated barium sulfate, and stirring for 120min at normal temperature at a rotating speed of 500r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization residue base aqueous primer-topcoat combined anticorrosive paint precursor.
And S4, mixing the precursor of the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating with a complexing agent, and stirring for 80min at normal temperature at a rotating speed of 300r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating.
Example 6
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
the waterborne alkyd resin is of industrial grade.
The grain size of the molten iron desulphurization slag is less than 3mm, and the molten iron desulphurization slag comprises the following chemical components in percentage by mass: na (Na)2O1.02％、MgO3.88％、Al2O33.11％、SiO210.99％、P2O50.65％、S1.24％、CaO56.86％、Cl0.56％、MnO2.17％、Fe2O318.62% and the other 0.90%.
The talcum powder is of industrial grade, and the fineness of the talcum powder is less than 800 meshes.
The precipitated barium sulfate is of industrial grade, the mass fraction of the precipitated barium sulfate is 99.9%, and the fineness of the precipitated barium sulfate is less than 800 meshes.
The propylene glycol methyl ether acetate is industrial grade.
The composite auxiliary agent is a mixture of alkylphenol polyoxyethylene ether, polyether modified polysiloxane and polysiloxane defoaming agent, and the mass ratio of the alkylphenol polyoxyethylene ether, the polyether modified polysiloxane and the polysiloxane defoaming agent is 1:1: 1.
The steel slag grinding aid is a mixture of phosphoric acid, triisopropanolamine, triethanolamine, glycerol and glycol in a ratio of 1:1:1:1: 1.
S1, mixing the molten iron desulphurization slag, a steel slag grinding aid and propylene glycol methyl ether acetate, and performing ball milling for 30 hours at a rotating speed of 650r/min by using a high-energy ball mill to obtain modified molten iron desulphurization slag superfine powder with the fineness of less than 800 meshes.
S2, mixing the modified molten iron desulphurization residue superfine powder with water-based alkyd resin and water, and stirring for 80min at the normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain a hydrophilic modified molten iron desulphurization residue superfine powder solution.
And S3, mixing the hydrophilic modified molten iron desulphurization residue superfine powder solution with talcum powder and precipitated barium sulfate, and stirring for 100min at normal temperature at a rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization residue base aqueous primer-topcoat combined anticorrosive paint precursor.
And S4, mixing the precursor of the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating with the complexing agent, and stirring for 70min at normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating.
Comparative example 1
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
the waterborne alkyd resin is of industrial grade.
The talcum powder is of industrial grade, and the fineness of the talcum powder is less than 800 meshes.
The precipitated barium sulfate is of industrial grade, the mass fraction of the precipitated barium sulfate is 99.9%, and the fineness of the precipitated barium sulfate is less than 800 meshes.
The propylene glycol methyl ether acetate is industrial grade.
The composite auxiliary agent is a mixture of alkylphenol polyoxyethylene ether, polyether modified polysiloxane and polysiloxane defoaming agent, and the mass ratio of the alkylphenol polyoxyethylene ether, the polyether modified polysiloxane and the polysiloxane defoaming agent is 1:1: 1.
(1) Mixing the water-based alkyd resin, water, propylene glycol methyl ether acetate, talcum powder and precipitated barium sulfate, and stirring for 100min at the normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain a water-based primer-topcoat combined anticorrosive paint precursor.
(2) And mixing the water-based primer-topcoat combined anticorrosive paint precursor with the composite auxiliary agent, and stirring for 70min at the normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain the water-based primer-topcoat combined anticorrosive paint.
Comparative example 2
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
the waterborne alkyd resin is of industrial grade.
The grain size of the molten iron desulphurization slag is less than 3mm, and the molten iron desulphurization slag comprises the following chemical components in percentage by mass: na (Na)2O1.02％、MgO3.88％、Al2O33.11％、SiO210.99％、P2O50.65％、S1.24％、CaO56.86％、Cl0.56％、MnO2.17％、Fe2O318.62% and the other 0.90%.
The talcum powder is of industrial grade, and the fineness of the talcum powder is less than 800 meshes.
The precipitated barium sulfate is of industrial grade, the mass fraction of the precipitated barium sulfate is 99.9%, and the fineness of the precipitated barium sulfate is less than 800 meshes.
The propylene glycol methyl ether acetate is industrial grade.
The composite auxiliary agent is a mixture of alkylphenol polyoxyethylene ether, polyether modified polysiloxane and polysiloxane defoaming agent, and the mass ratio of the alkylphenol polyoxyethylene ether, the polyether modified polysiloxane and the polysiloxane defoaming agent is 1:1: 1.
(1) Mixing the molten iron desulphurization slag and propylene glycol methyl ether acetate, and ball-milling for 30h at the rotating speed of 650r/min by using a high-energy ball mill to obtain the modified molten iron desulphurization slag superfine powder with the fineness of less than 800 meshes.
(2) And mixing the modified molten iron desulphurization residue superfine powder with water-based alkyd resin and water, and stirring for 80min at normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain a hydrophilic molten iron desulphurization residue superfine powder solution.
(3) And mixing the hydrophilic superfine molten iron desulphurization slag powder solution with talcum powder and precipitated barium sulfate, and stirring for 100min at normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain a molten iron desulphurization slag-based aqueous primer-topcoat combined anticorrosive coating precursor.
(4) Mixing the precursor of the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive paint with the composite auxiliary agent, and stirring for 70min at the normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive paint.
Comparative example 3
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
the grain size of the molten iron desulphurization slag is less than 3mm, and the molten iron desulphurization slag comprises the following chemical components in percentage by mass: na (Na)2O1.02％、MgO3.88％、Al2O33.11％、SiO210.99％、P2O50.65％、S1.24％、CaO56.86％、Cl0.56％、MnO2.17％、Fe2O318.62% and the other 0.90%.
The talcum powder is of industrial grade, and the fineness of the talcum powder is less than 800 meshes.
The precipitated barium sulfate is of industrial grade, the mass fraction of the precipitated barium sulfate is 99.9%, and the fineness of the precipitated barium sulfate is less than 800 meshes.
The propylene glycol methyl ether acetate is industrial grade.
The composite auxiliary agent is a mixture of alkylphenol ethoxylates, polyether modified polysiloxane and polysiloxane defoaming agent, and the mass ratio of the wetting dispersant to the leveling agent to the defoaming agent is 1:1: 1.
The steel slag grinding aid is a mixture of phosphoric acid, triisopropanolamine, triethanolamine, glycerol and glycol in a ratio of 1:1:1:1: 1.
(1) Mixing the molten iron desulphurization slag, a steel slag grinding aid and propylene glycol methyl ether acetate, and ball-milling for 30 hours at a rotation speed of 650r/min by using a high-energy ball mill to obtain the modified molten iron desulphurization slag superfine powder with the fineness of less than 800 meshes.
(2) Mixing the modified molten iron desulphurization residue superfine powder with water, and stirring for 80min at normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain a hydrophilic modified molten iron desulphurization residue superfine powder solution.
(3) Mixing the hydrophilic modified molten iron desulphurization residue superfine powder solution with talcum powder and precipitated barium sulfate, and stirring for 100min at the normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain a molten iron desulphurization residue base aqueous primer-topcoat combined anticorrosive paint precursor.
(4) Mixing the precursor of the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive paint with the composite auxiliary agent, and stirring for 70min at the normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive paint.
Comparative example 4
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
the water-based alkyd resin is of industrial grade
The grain size of the molten iron desulphurization slag is less than 3mm, and the molten iron desulphurization slag comprises the following chemical components in percentage by mass: na (Na)2O1.02％、MgO3.88％、Al2O33.11％、SiO210.99％、P2O50.65％、S1.24％、CaO56.86％、Cl0.56％、MnO2.17％、Fe2O318.62% and the other 0.90%.
The talcum powder is of industrial grade, and the fineness of the talcum powder is less than 800 meshes.
The precipitated barium sulfate is of industrial grade, the mass fraction of the precipitated barium sulfate is 99.9%, and the fineness of the precipitated barium sulfate is less than 800 meshes.
The composite auxiliary agent is a mixture of alkylphenol polyoxyethylene ether, polyether modified polysiloxane and polysiloxane defoaming agent, and the mass ratio of the alkylphenol polyoxyethylene ether, the polyether modified polysiloxane and the polysiloxane defoaming agent is 1:1: 1.
The steel slag grinding aid is a mixture of phosphoric acid, triisopropanolamine, triethanolamine, glycerol and glycol in a ratio of 1:1:1:1: 1.
(1) Mixing the molten iron desulphurization slag and the steel slag grinding aid, and ball-milling for 30 hours at the rotating speed of 650r/min by using a high-energy ball mill to obtain the modified molten iron desulphurization slag superfine powder with the fineness of less than 800 meshes.
(2) Mixing the modified molten iron desulphurization residue superfine powder with water-based alkyd resin and water, and stirring for 80min at normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain a hydrophilic modified molten iron desulphurization residue superfine powder solution.
(3) Mixing the hydrophilic modified molten iron desulphurization residue superfine powder solution with talcum powder and precipitated barium sulfate, and stirring for 100min at the normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain a molten iron desulphurization residue base aqueous primer-topcoat combined anticorrosive paint precursor.
(4) Mixing the precursor of the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive paint with the composite auxiliary agent, and stirring for 70min at the normal temperature at the rotating speed of 400r/min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive paint.
The performance detection processes of the preparation examples 1 to 6 and the comparative examples 1 to 4 are as follows: the molten iron desulphurization slag-based waterborne primer-topcoat anticorrosive paint is tested according to national standards HG/T4847-2015, GB/T1732-1993, GB/T6742-2007, GB/T6739-2006 and GB/T1771-2007.
TABLE 1 Properties of aqueous primer-topcoat corrosion resistant coating based on molten iron desulphurization slag
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating is characterized in that: the water-based primer-topcoat combined anticorrosive paint comprises the following raw materials in percentage by mass:
the composite auxiliary agent is a mixture of alkylphenol polyoxyethylene ether, polyether modified polysiloxane and polysiloxane defoaming agent, the mass ratio of the alkylphenol polyoxyethylene ether, the polyether modified polysiloxane and the polysiloxane defoaming agent is 3:2:1-1:2:3,
the steel slag grinding aid is a mixture of phosphoric acid, triisopropanolamine, triethanolamine, glycerol and ethylene glycol, and the mass ratio of the phosphoric acid, the triisopropanolamine, the triethanolamine, the glycerol and the ethylene glycol is 5:4:3:2:1-1:2:3:4: 5.
2. The molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating as claimed in claim 1, which is characterized in that: the grain size of the molten iron desulphurization slag is less than 3mm, and the molten iron desulphurization slag comprises the following chemical components in percentage by mass: na (Na)2O 1.02％、MgO 3.88％、Al2O3 3.11％、SiO2 10.99％、P2O5 0.65％、S 1.24％、CaO 56.86％、Cl 0.56％、MnO 2.17％、Fe2O318.62% and the other 0.90%.
3. The molten iron desulphurization slag-based water-based primer-topcoat integrated anticorrosive coating as claimed in claim 2, which is characterized in that: the talcum powder is of industrial grade, and the fineness of the talcum powder is less than 800 meshes.
4. The molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating as claimed in claim 3, which is characterized in that: the precipitated barium sulfate is of industrial grade, the mass fraction of the precipitated barium sulfate is 99.9%, and the fineness of the precipitated barium sulfate is less than 800 meshes.
5. The preparation method of the molten iron desulphurization slag-based water-based primer-topcoat integrated anticorrosive coating according to any one of claims 1 to 4, characterized by comprising the following steps: the method comprises the following steps:
s1, mixing molten iron desulphurization slag, a steel slag grinding aid and propylene glycol methyl ether acetate, and carrying out ball milling for 24-36 h at a rotating speed of 500-750 r/min by using a high-energy ball mill to obtain modified molten iron desulphurization slag superfine powder with the fineness of less than 800 meshes;
s2, mixing the modified molten iron desulphurization residue superfine powder with water-based alkyd resin and water, and stirring for 60-90 min at the normal temperature by using a constant-temperature magnetic stirrer at the rotating speed of 300-500 r/min to obtain a hydrophilic modified molten iron desulphurization residue superfine powder solution;
s3, mixing the hydrophilic modified molten iron desulphurization residue superfine powder solution with talcum powder and precipitated barium sulfate, and stirring at the normal temperature by using a constant-temperature magnetic stirrer at the rotating speed of 300-500 r/min for 90-120 min to obtain a molten iron desulphurization residue base aqueous primer-topcoat combined anticorrosive paint precursor;
s4, mixing the precursor of the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating with a complexing agent, and stirring at the normal temperature at a rotating speed of 300-500 r/min for 60-90 min by using a constant-temperature magnetic stirrer to obtain the molten iron desulphurization slag-based water-based primer-topcoat combined anticorrosive coating.
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