CN111253843A - Quick-drying water-based alkyd paint for steel structure and preparation method thereof - Google Patents
Quick-drying water-based alkyd paint for steel structure and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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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- 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
- C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
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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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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention relates to a quick-drying water-based alkyd paint for a steel structure and a preparation method thereof, belonging to the technical field of coatings. Comprises the following components in parts by weight: 20-40 parts of water-based alkyd resin, 20-40 parts of styrene-acrylic emulsion, 0.1-0.3 part of defoaming agent, 0.1-0.8 part of thickening agent, 0.1-1.0 part of flash rust inhibitor, 0.1-0.3 part of adhesion promoter, 1-5 parts of film-forming assistant, 10-15 parts of titanium dioxide, 10-15 parts of precipitated barium sulfate, 0.5-3.0 parts of dispersing agent, 0.3-1.0 part of anti-freezing agent, 3-8 parts of anti-rust pigment, 0.1-1.0 part of drier, 5-20 parts of deionized water I, 0-30 parts of deionized water II and 0.1-1.1 part of pH regulator. By using the method of blending the alkyd resin and the styrene-acrylic emulsion, the invention utilizes the advantages of good film-forming property, good freeze-thaw stability, difficult re-adhesion, good salt spray resistance and the like of the alkyd resin, and also utilizes the characteristics of low VOC content, high drying speed, good water resistance and the like of the styrene-acrylic emulsion, and the prepared water-based alkyd paint film has certain hardness, and the surface drying speed, the actual drying speed, the adhesive force and the salt spray resistance are greatly improved.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a quick-drying water-based alkyd paint for a steel structure and a preparation method thereof.
Background
In recent years, steel structure buildings such as steel structure houses, steel structure bridges, ocean engineering steel structures and the like have very large development space and power. However, in recent years, the corrosion amount of steel structure buildings in China is huge, and great economic loss is caused. Most of the coatings commonly used in the steel structure market at present are solvent-based, and although the price is low, the VOC (volatile organic compound) emission is high, and the environmental pollution is serious. With the environmental protection of the country, the control of VOC emission becomes more and more strict, and the conversion upgrade of the traditional paint is urgent for the paint manufacturers. The development of aqueous coating products has become a major approach to reduce VOC emissions. However, the water-based alkyd paints on the market at present have the following disadvantages: 1. the drying speed is slow, and the smell is heavy, especially in a low-temperature and high-humidity state; 2. the hardness of the water-based alkyd paint is only 3B, and even lower; 3. the initial water resistance and salt spray resistance are poor. Therefore, the development of a water-based paint with low odor, fast drying speed and good corrosion resistance is urgent.
Disclosure of Invention
Aiming at the problems of slow drying speed, poor hardness, poor corrosion resistance and heavy smell of the water-based alkyd paint in the prior art, the invention provides the quick-drying water-based alkyd paint for the steel structure and the preparation method thereof, so as to solve the problems. By using the method of blending the alkyd resin and the styrene-acrylic emulsion, the invention utilizes the advantages of good film-forming property, good freeze-thaw stability, difficult re-adhesion, good salt spray resistance and the like of the alkyd resin, and also utilizes the characteristics of low VOC content, high drying speed, good water resistance and the like of the styrene-acrylic emulsion, and the prepared water-based alkyd paint film has certain hardness, and the surface drying speed, the actual drying speed, the adhesive force and the salt spray resistance are greatly improved.
The technical scheme of the invention is as follows: the quick-drying water-based alkyd paint for the steel structure comprises the following components in parts by weight: 20-40 parts of water-based alkyd resin, 20-40 parts of styrene-acrylic emulsion, 0.1-0.3 part of defoaming agent, 0.1-0.8 part of thickening agent, 0.1-1.0 part of flash rust inhibitor, 0.1-0.3 part of adhesion promoter, 1-5 parts of film-forming assistant, 10-15 parts of titanium dioxide, 10-15 parts of precipitated barium sulfate, 0.5-3.0 parts of dispersing agent, 0.3-1.0 part of anti-freezing agent, 3-8 parts of anti-rust pigment, 0.1-1.0 part of drier, 5-20 parts of deionized water I, 0-30 parts of deionized water II and 0.1-1.1 part of pH regulator.
Preferably, the composition comprises the following components in parts by weight: 25 parts of water-based alkyd resin, 25 parts of styrene-acrylic emulsion, 0.2 part of defoaming agent, 0.3 part of thickening agent, 0.5 part of anti-flash rust agent, 0.2 part of adhesion promoter, 3 parts of film-forming assistant, 12 parts of titanium dioxide, 12 parts of precipitated barium sulfate, 1.0 part of dispersing agent, 0.5 part of anti-freezing agent, 6 parts of anti-rust pigment, 0.5 part of drier, 10 parts of deionized water I, 3.3 parts of deionized water II and 0.5 part of pH regulator.
Preferably, the pH value of the water-based alkyd resin is 7.0-9.0, and the type is Dekomei 5806. The alkyd resin has good film forming property, good cold melting stability and difficult re-adhesion; the alkyd resin has the other characteristic of good compatibility with styrene-acrylic emulsion, so that a paint film with good luster and fullness can be formed by combining the alkyd resin and the styrene-acrylic emulsion, and meanwhile, the salt spray resistance of the alkyd resin is good, so that the obtained paint film has excellent corrosion resistance. In addition, the alkyd resin has low odor and does not cause pollution to the environment.
Preferably, the styrene-acrylic emulsion is Jili JL-16C. The styrene-acrylic emulsion has low VOC content, and the paint film after being coated has high drying speed. The styrene-acrylic emulsion has the most prominent characteristic of better compatibility with alkyd resin. As the styrene-acrylic emulsion plays a main role in the initial drying stage, the styrene-acrylic emulsion is a thermoplastic high molecular substance, the drying is fast, and a protective layer can be rapidly formed, so that better initial water resistance is provided for the coating.
Preferably, the defoaming agent is a high-performance organic silicon defoaming agent with the model number of Digao 810. The defoaming agent has good defoaming effect.
Preferably, the thickener is a polyurethane thickener with the model number of Haimines 299.
Preferably, the dispersant is byk 190.
Preferably, the adhesion promoter is Wiegmann Dynasylan GLYMO. The adhesion promoter can provide better adhesion, and ensures that a paint film has better tolerance
Preferably, the film-forming aid is ethylene glycol butyl ether. The film forming additive has great influence on the rheological property of the coating, and the use of butyl cellosolve is easier for construction.
Preferably, the titanium dioxide is rutile titanium dioxide.
Preferably, the precipitated barium sulfate is barium python sulfate.
Preferably, the rust-proof pigment is Haibo ZPA.
Preferably, the pH regulator is one of N, N-dimethylethanolamine or diethanolamine.
Preferably, the antifreezing agent is n-propyl dow acetate. N-propyl acetate can significantly lower the freezing point of water, and at the same time, can increase the drying rate due to its relatively low boiling point. This ensures storage of the water-based paint in winter and does not affect the drying speed of the paint film when in use.
Preferably, the flash rust inhibitor is hamming FA 179. The flash rust inhibitor has a good flash rust inhibition effect.
Preferably, the drier is OMG 123. The drier provides balance between surface drying and actual drying of the paint film, and has good help for increasing the hardness of the paint film.
The invention also aims to provide a preparation method of the quick-drying water-based alkyd paint for steel structures, which comprises the following specific preparation steps:
(1) preparing an emulsion: accurately weighing the water-based alkyd resin, adding the water-based alkyd resin into a dispersion machine, starting stirring, controlling the stirring speed to be 500-600 r/min, and controlling the temperature of a reaction solution to be not higher than 60 ℃; adding a drier and a pH regulator while stirring, regulating the pH of a reaction solution to be 8-9, uniformly stirring, adding deionized water I for emulsification for 20min, adding a styrene-acrylic emulsion while stirring, and stirring until the reaction solution is transparent to obtain a compound emulsion;
(2) preparing color paste: adding deionized water II into a toning tank, controlling the stirring speed to be 500-600 r/min, adding a defoaming agent, a dispersing agent and titanium dioxide into the toning tank one by one under stirring, precipitating barium sulfate and uniformly dispersing an anti-rust pigment, then grinding by a grinding machine, controlling the grinding temperature to be below 40 ℃, and grinding until the fineness is less than 30 mu m to obtain color paste;
(3) and (2) controlling the stirring speed to be 500-600 r/min, adding the color paste prepared in the step (2) into the compound emulsion prepared in the step (1) under stirring, adding the anti-flash rust agent, the adhesion promoter, the film forming assistant, the antifreezing agent and the thickening agent one by one, and uniformly stirring to obtain the quick-drying water-based alkyd paint for the steel structure.
The invention has the beneficial effects that:
(1) according to the invention, by using the method of blending the alkyd resin and the styrene-acrylic emulsion, the prepared water-based paint has better salt spray resistance and water resistance, and as the used styrene-acrylic emulsion and the alkyd resin both have better salt spray resistance and have better compatibility, the salt spray resistance and water resistance of the prepared water-based paint are ensured, and the water-based paint can be used for steel structures.
(2) The water-based paint disclosed by the invention is excellent in mechanical property and has better hardness increase. Because the thermoplastic styrene-acrylic emulsion in the paint has extremely high drying speed, a compact coating can be quickly formed, so that the initial hardness of a paint film is ensured to be very good, and the effect of hardness increase is obviously better than that of a single alkyd paint. And after the paint film is completely dried, the flexibility and the hardness are combined.
(3) According to the invention, by using the method of blending the alkyd resin and the styrene-acrylic emulsion, the characteristics of low VOC content and high drying speed of the styrene-acrylic emulsion are utilized, and the advantages of good film forming property, good freeze-thaw stability, difficulty in re-adhesion, good salt spray resistance and the like of the alkyd resin are utilized, so that a paint film formed by the prepared water-based paint has certain hardness, adhesive force, salt spray resistance and low VOC. Compared with the prior art, the invention develops the styrene-acrylic modified alkyd water-soluble paint for the steel structure, the VOC is far lower than that of the existing alkyd resin type paint, and the cost of the water-based paint is greatly reduced. The surface drying speed and the actual drying speed are greatly improved, so that the popularization and the large-scale application of the water-based paint in the steel structure market are realized.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
The waterborne alkyd resin is Dekomei 5806;
the styrene-acrylic emulsion is Jili JL-16C;
the defoaming agent is digao 810;
the thickener is Haimines 299;
the dispersant is byk 190;
the adhesion promoter is Wingchuang Dynasylan GLYMO;
the film forming auxiliary agent is ethylene glycol butyl ether;
the titanium dioxide is rutile type titanium dioxide;
the precipitated barium sulfate is barium python sulfate;
the rust-proof pigment is Haibo ZPA;
the antifreezing agent is n-propyl Dow acetate;
the flash rust inhibitor is Haimines FA 179;
the drier is OMG 123;
other raw materials in the invention are all commercial products.
Example 1
A quick-drying water-based alkyd paint for steel structures comprises the following components in parts by weight: 25 parts of water-based alkyd resin, 25 parts of styrene-acrylic emulsion, 0.2 part of defoaming agent, 0.3 part of thickening agent, 0.5 part of anti-flash rust agent, 0.2 part of adhesion promoter, 3 parts of film-forming assistant, 12 parts of titanium dioxide, 12 parts of precipitated barium sulfate, 1.0 part of dispersing agent, 0.5 part of anti-freezing agent, 6 parts of anti-rust pigment, 0.5 part of drier, 10 parts of deionized water I, 3.3 parts of deionized water II and 0.5 part of pH regulator.
The preparation method comprises the following specific steps:
(1) preparing an emulsion: accurately weighing 25 parts of waterborne alkyd resin, adding the waterborne alkyd resin into a dispersion machine, starting stirring, controlling the stirring speed to be 500-600 r/min, and controlling the temperature of a reaction solution to be not higher than 60 ℃; adding 0.5 part of drier and 0.5 part of N, N-dimethylethanolamine under stirring, adjusting the pH of a reaction solution to 8.5, adding 10 parts of deionized water I after uniformly stirring, emulsifying for 20min, adding 25 parts of styrene-acrylic emulsion under stirring after emulsifying, and stirring until the reaction solution is in a transparent state to obtain a compound emulsion;
(2) preparing color paste: adding 3.3 parts of deionized water II into a toning tank, controlling the stirring speed to be 500-600 r/min, adding 0.2 part of defoaming agent, 1.0 part of dispersing agent and 12 parts of titanium dioxide into the toning tank one by one under stirring, precipitating 12 parts of barium sulfate and dispersing 6 parts of anti-rust pigment uniformly, then grinding by a grinding machine, controlling the grinding temperature to be below 40 ℃, and grinding until the fineness is less than 30 mu m to obtain color paste;
(3) and (2) controlling the stirring speed to be 500-600 r/min, adding the color paste prepared in the step (2) into the compound emulsion prepared in the step (1) under stirring, then adding 0.5 part of flash rust inhibitor, 0.2 part of adhesion promoter, 3 parts of film-forming assistant, 0.5 part of antifreezing agent and 0.3 part of thickening agent one by one, and uniformly stirring to obtain the quick-drying water-based alkyd paint for the steel structure.
Example 2
A quick-drying water-based alkyd paint for steel structures comprises the following components in parts by weight: 20 parts of water-based alkyd resin, 20 parts of styrene-acrylic emulsion, 0.1 part of defoaming agent, 0.2 part of thickening agent, 0.2 part of anti-flash rust agent, 0.1 part of adhesion promoter, 1 part of film-forming assistant, 10 parts of titanium dioxide, 12 parts of precipitated barium sulfate, 0.5 part of dispersing agent, 0.3-1.0 part of anti-freezing agent, 3 parts of anti-rust pigment, 0.1 part of drier, 15 parts of deionized water I, 17.4 parts of deionized water II and 0.1 part of pH regulator.
The preparation method comprises the following specific steps:
(1) preparing an emulsion: accurately weighing 20 parts of waterborne alkyd resin, adding the waterborne alkyd resin into a dispersion machine, starting stirring, controlling the stirring speed to be 500-600 r/min, and controlling the temperature of a reaction solution to be not higher than 60 ℃; adding 0.1 part of drier and 0.1 part of N, N-dimethylethanolamine under stirring, adjusting the pH of a reaction solution to 8.5, adding 15 parts of deionized water I after uniformly stirring, emulsifying for 20min, adding 20 parts of styrene-acrylic emulsion under stirring after emulsifying, and stirring until the reaction solution is in a transparent state to obtain a compound emulsion;
(2) preparing color paste: adding 17.4 parts of deionized water II into a toning tank, controlling the stirring speed to be 500-600 r/min, adding 0.1 part of defoaming agent, 0.5 part of dispersing agent and 10 parts of titanium dioxide into the toning tank one by one under stirring, precipitating 12 parts of barium sulfate and dispersing 3 parts of anti-rust pigment uniformly, then grinding by a grinding machine, controlling the grinding temperature to be below 40 ℃, and grinding until the fineness is less than 30 mu m to obtain color paste;
(3) and (2) controlling the stirring speed to be 500-600 r/min, adding the color paste prepared in the step (2) into the compound emulsion prepared in the step (1) under stirring, then adding 0.2 part of flash rust inhibitor, 0.1 part of adhesion promoter, 1 part of film-forming assistant, 0.3 part of antifreezing agent and 0.2 part of thickening agent one by one, and uniformly stirring to obtain the quick-drying water-based alkyd paint for the steel structure.
Example 3
A quick-drying water-based alkyd paint for steel structures comprises the following components in parts by weight: 30 parts of water-based alkyd resin, 28 parts of styrene-acrylic emulsion, 0.3 part of defoaming agent, 0.8 part of thickening agent, 1.0 part of anti-flash rust agent, 0.3 part of adhesion promoter, 5 parts of film-forming assistant, 15 parts of titanium dioxide, 12 parts of precipitated barium sulfate, 3.0 parts of dispersing agent, 1.0 part of anti-freezing agent, 8 parts of anti-rust pigment, 1.0 part of drier, 6 parts of deionized water I, 0.4 part of deionized water II and 0.2 part of pH regulator.
The preparation method comprises the following specific steps:
(1) preparing an emulsion: accurately weighing 34 parts of waterborne alkyd resin, adding the waterborne alkyd resin into a dispersion machine, starting stirring, controlling the stirring speed to be 500-600 r/min, and controlling the temperature of a reaction solution to be not higher than 60 ℃; adding 1.0 part of drier and 0.2 part of N, N-dimethylethanolamine under stirring, adjusting the pH of a reaction solution to 8.5, adding 6 parts of deionized water I after uniformly stirring, emulsifying for 20min, adding 20 parts of styrene-acrylic emulsion under stirring after emulsifying, and stirring until the reaction solution is transparent to obtain a compound emulsion;
(2) preparing color paste: adding 0.4 part of deionized water II into a toning tank, controlling the stirring speed to be 500-600 r/min, adding 0.3 part of defoaming agent, 3 parts of dispersing agent and 15 parts of titanium dioxide into the toning tank one by one under stirring, precipitating 12 parts of barium sulfate and dispersing 8 parts of anti-rust pigment uniformly, then grinding by a grinding machine, controlling the grinding temperature to be below 40 ℃, and grinding until the fineness is less than 30 mu m to obtain color paste;
(3) and (2) controlling the stirring speed to be 500-600 r/min, adding the color paste prepared in the step (2) into the compound emulsion prepared in the step (1) under stirring, then adding 1.0 part of flash rust inhibitor, 0.3 part of adhesion promoter, 5 parts of film-forming assistant, 1.0 part of antifreeze and 0.8 part of thickener one by one, and uniformly stirring to obtain the quick-drying water-based alkyd paint for the steel structure.
Comparative example 1
The water-based alkyd paint comprises the following components in parts by weight: 50 parts of water-based alkyd resin, 0.2 part of defoaming agent, 0.3 part of thickening agent, 0.5 part of anti-flash rust agent, 0.2 part of adhesion promoter, 3 parts of film-forming aid, 12 parts of titanium dioxide, 12 parts of precipitated barium sulfate, 1.0 part of dispersing agent, 0.5 part of anti-freezing agent, 6 parts of antirust pigment, 0.5 part of drier, 8 parts of deionized water I, 5.4 parts of deionized water II and 0.5 part of pH regulator.
The preparation method comprises the following specific steps:
(1) preparing an emulsion: accurately weighing 25 parts of waterborne alkyd resin, adding the waterborne alkyd resin into a dispersion machine, starting stirring, controlling the stirring speed to be 500-600 r/min, and controlling the temperature of a reaction solution to be not higher than 60 ℃; adding 0.5 part of drier under stirring, uniformly stirring, adding 8 parts of deionized water I, and emulsifying for 20min to obtain emulsion;
(2) preparing color paste: adding 5.4 parts of deionized water II into a toning tank, controlling the stirring speed to be 500-600 r/min, adding 0.2 part of defoaming agent, 1.0 part of dispersing agent and 12 parts of titanium dioxide into the toning tank one by one under stirring, precipitating 12 parts of barium sulfate and dispersing 6 parts of anti-rust pigment uniformly, then grinding by a grinding machine, controlling the grinding temperature to be below 40 ℃, and grinding until the fineness is less than 30 mu m to obtain color paste;
(3) and (2) controlling the stirring speed to be 500-600 r/min, adding the color paste prepared in the step (2) into the emulsion prepared in the step (1) under stirring, then adding 0.5 part of flash rust inhibitor, 0.2 part of adhesion promoter, 3 parts of film-forming assistant, 0.5 part of antifreezing agent and 0.3 part of thickening agent one by one, and uniformly stirring to obtain the water-based alkyd paint.
The aqueous coating materials of example 1, example 2, example 3 and comparative example 1 were tested and the test results are shown in the following table 1:
TABLE 1 results of the measurements
According to the detection result, the quick-drying water-based alkyd paint for the steel structure has good salt spray resistance, and a paint film has flexibility and hardness after being completely dried. And the surface drying speed and the actual drying speed are greatly improved, so that the popularization and the large-scale application of the water-based paint in the steel structure market are realized.
Although the present invention has been described in detail by way of preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The quick-drying water-based alkyd paint for the steel structure is characterized by comprising the following components in parts by weight: 20-40 parts of water-based alkyd resin, 20-40 parts of styrene-acrylic emulsion, 0.1-0.3 part of defoaming agent, 0.1-0.8 part of thickening agent, 0.1-1.0 part of flash rust inhibitor, 0.1-0.3 part of adhesion promoter, 1-5 parts of film-forming assistant, 10-15 parts of titanium dioxide, 10-15 parts of precipitated barium sulfate, 0.5-3.0 parts of dispersing agent, 0.3-1.0 part of anti-freezing agent, 3-8 parts of anti-rust pigment, 0.1-1.0 part of drier, 5-20 parts of deionized water I, 0-30 parts of deionized water II and 0.1-1.1 part of pH regulator.
2. The quick-drying water-based alkyd paint for steel structures according to claim 1, comprising the following components in parts by weight: 25 parts of water-based alkyd resin, 25 parts of styrene-acrylic emulsion, 0.2 part of defoaming agent, 0.3 part of thickening agent, 0.5 part of anti-flash rust agent, 0.2 part of adhesion promoter, 3 parts of film-forming assistant, 12 parts of titanium dioxide, 12 parts of precipitated barium sulfate, 1.0 part of dispersing agent, 0.5 part of anti-freezing agent, 6 parts of anti-rust pigment, 0.5 part of drier, 10 parts of deionized water I, 3.3 parts of deionized water II and 0.5 part of pH regulator.
3. The quick-drying water-based alkyd paint for steel structures of claim 1, wherein the water-based alkyd resin has a pH of 7.0-9.0 and a type of Dekomei 5806.
4. The quick-drying water-based alkyd paint for steel structures according to claim 1, wherein the styrene-acrylic emulsion is model JL-16C.
5. The quick-drying waterborne alkyd paint for steel structures of claim 1, wherein the defoamer is a high performance silicone defoamer, model 810 digao.
6. The quick-drying waterborne alkyd paint for steel structures of claim 1, wherein the thickener is a polyurethane thickener having the type hamming 299.
7. The quick-drying aqueous alkyd paint for steel structures according to claim 1, wherein the dispersant is byk 190.
8. The quick-drying water-based alkyd paint for steel structures according to claim 1, wherein the adhesion promoter is Dynasylan GLYMO.
9. The quick-drying waterborne alkyd paint for steel structures of claim 1, wherein the coalescent is butyl cellosolve;
further preferably, the titanium dioxide is rutile type titanium dioxide;
further preferably, the precipitated barium sulfate is barium python sulfate;
further preferably, the anti-rust pigment is Haibo ZPA;
further preferably, the pH regulator is one of N, N-dimethylethanolamine or diethanolamine;
further preferably, the antifreezing agent is n-propyl dow acetate;
further preferably, the flash rust inhibitor is hamming FA 179;
further preferably, the drier is OMG 123.
10. The preparation method of the quick-drying water-based alkyd paint for the steel structure is characterized by comprising the following specific preparation steps:
(1) preparing an emulsion: accurately weighing the water-based alkyd resin, adding the water-based alkyd resin into a dispersion machine, starting stirring, controlling the stirring speed to be 500-600 r/min, and controlling the temperature of a reaction solution to be not higher than 60 ℃; adding a drier and a pH regulator while stirring, regulating the pH of a reaction solution to be 8-9, uniformly stirring, adding deionized water I for emulsification for 20min, adding a styrene-acrylic emulsion while stirring, and stirring until the reaction solution is transparent to obtain a compound emulsion;
(2) preparing color paste: adding deionized water II into a toning tank, controlling the stirring speed to be 500-600 r/min, adding a defoaming agent, a dispersing agent and titanium dioxide into the toning tank one by one under stirring, precipitating barium sulfate and uniformly dispersing an anti-rust pigment, then grinding by a grinding machine, controlling the grinding temperature to be below 40 ℃, and grinding until the fineness is less than 30 mu m to obtain color paste;
(3) and (2) controlling the stirring speed to be 500-600 r/min, adding the color paste prepared in the step (2) into the compound emulsion prepared in the step (1) under stirring, adding the anti-flash rust agent, the adhesion promoter, the film forming assistant, the antifreezing agent and the thickening agent one by one, and uniformly stirring to obtain the quick-drying water-based alkyd paint for the steel structure.
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| CN114231140A (en) * | 2021-12-20 | 2022-03-25 | 中北大学 | Water-based alkyd antirust paint and preparation method and application thereof |
| CN116004063A (en) * | 2023-01-09 | 2023-04-25 | 湖南金化科技集团有限公司 | Improved quick-drying aqueous steel pipe antirust varnish |
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