CN111040541A - Water-based acrylic amino baking paint and preparation method thereof - Google Patents
Water-based acrylic amino baking paint and preparation method thereof Download PDFInfo
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- CN111040541A CN111040541A CN201911331409.0A CN201911331409A CN111040541A CN 111040541 A CN111040541 A CN 111040541A CN 201911331409 A CN201911331409 A CN 201911331409A CN 111040541 A CN111040541 A CN 111040541A
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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
- 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
- C09D133/04—Homopolymers or copolymers of esters
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
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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
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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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
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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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/328—Phosphates of heavy metals
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention relates to the field of coating and aims to provide a water-based acrylic amino baking varnish and a preparation method thereof. The water-based acrylic amino baking varnish consists of the following raw materials in percentage by weight: 25-45% of hydroxyl acrylic acid dispersoid, 1-2% of dimethylethanolamine, 2-5% of alcohol ether, 4-8% of amino resin, 10-30% of nano phosphate antirust slurry, 0.1-0.5% of defoaming agent, 0.1-0.5% of flatting agent, 0.5-2.0% of acid catalyst, 1-5% of adhesion promoter and 22.4-35.9% of deionized water. The invention adopts the adhesion promoter to realize that the waterborne acrylic amino baking varnish has good adhesion on the surfaces of carbon steel, stainless steel, aluminum alloy and other metals, so the adaptability is particularly strong; an acid catalyst is adopted to promote the dehydration crosslinking reaction, reduce the thermosetting temperature of the water-based acrylic amino baking varnish and save energy; the nano phosphate antirust slurry is adopted to enhance the salt spray resistance and corrosion resistance of the waterborne acrylic amino baking paint.
Description
Technical Field
The invention relates to a water-based acrylic amino baking paint and a preparation method thereof, belonging to the field of coating.
Background
The water-based acrylic amino baking varnish is a multifunctional coating integrating decoration and protection, which is prepared by taking hydroxyl acrylate, amino resin and the like as film forming substances and compounding pigments, fillers and functional additives, has low VOC content, is green and environment-friendly, and can be used for surface coating of metal, plastic, glass, ceramic and the like. However, the water-based acrylic amino baking varnish has large construction difficulty and more coating surface defects due to the reasons of large surface tension, slow water volatilization, poor compatibility of resin and filler and the like, and has larger differences in salt mist resistance, acid and alkali resistance and the like compared with the oil-based acrylic amino baking varnish. Therefore, the improvement of the formula and the performance of the waterborne acrylic amino baking varnish is always the focus of research.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a water-based acrylic amino baking varnish and a preparation method thereof.
In order to solve the technical problem, the solution of the invention is as follows:
provides a water-based acrylic amino baking varnish, which consists of the following raw materials in percentage by weight: 25-45% of hydroxyl acrylic acid dispersoid, 1-2% of Dimethylethanolamine (DMEA), 2-5% of alcohol ether, 4-8% of amino resin, 10-30% of nano phosphate antirust slurry, 0.1-0.5% of defoaming agent, 0.1-0.5% of flatting agent, 0.5-2.0% of acid catalyst, 1-5% of adhesion promoter and 22.4-35.9% of deionized water.
In the invention, the solid content of the hydroxyl acrylic acid dispersoid is 45-55%; the alcohol ether is any one of ethylene glycol butyl ether, propylene glycol methyl ether and propylene glycol butyl ether; the amino resin is cyanogen 325 resin; the nano phosphate antirust slurry is aluminum tripolyphosphate slurry or zinc aluminum phosphate slurry, the solid content is 10-30%, and the particle size is less than or equal to 200.0 nm; the defoaming agent is one of BYK024 and Tego 820; the leveling agent is BYK346 or Tego 280; the acid catalyst is a King's X49-110 acid catalyst; the adhesion promoter is Luborun 2063 promoter.
The invention further provides a preparation method of the waterborne acrylic amino baking varnish, which comprises the following steps:
(1) taking the following raw material components in percentage by weight: 25-45% of hydroxyl acrylic acid dispersoid, 1-2% of dimethylethanolamine, 2-5% of alcohol ether, 4-8% of amino resin, 10-30% of nano phosphate antirust slurry, 0.1-0.5% of defoaming agent, 0.1-0.5% of flatting agent, 0.5-2.0% of acid catalyst, 1-5% of adhesion promoter and 22.4-35.9% of deionized water;
(2) adding hydroxyl acrylic acid dispersoid, dimethylethanolamine and deionized water into stirring equipment, and stirring to dissolve the materials;
(3) and sequentially adding the rest components, and continuously stirring at the rotating speed of 500-2000 rpm for 1-5 h to obtain the water-based acrylic amino baking paint product.
The using method comprises the following steps:
the water-based acrylic amino baking varnish product is constructed in a spraying mode, the curing temperature is 130-150 ℃, the curing time is 20min, and the thickness is 25 +/-5 mu m. After construction is completed, the coating adhesion is tested according to GB/T9286-1998, the coating pencil hardness is tested according to GB/T6739-2006, and the neutral salt spray resistance of the coating is tested according to GB/T1771-2007. The method specifically comprises the following steps: the carbon steel plate with the coating is subjected to edge sealing by paraffin and rosin, the surface of the coating is not subjected to treatment such as cross cutting and marking, and the time from the time the coating is placed in a salt spray box to the time the defect area of the coating reaches 0.1% < A less than or equal to 0.25% (GB/T6461-2002) is defined as the salt spray resistant time of the coating.
Description of the inventive principles:
the water-based acrylic amino baking varnish provided by the invention takes hydroxyl acrylic dispersoid and amino resin as main components. In a heating state, hydroxyl, amino and other groups in a molecular structure undergo dehydration crosslinking reaction to form a compact film layer; and meanwhile, nano phosphate antirust slurry is added, so that the salt spray resistance of the amino baking paint is improved. The adhesion promoter is added to improve the adhesion of the amino baking varnish on the surfaces of different metals; and an acid catalyst is added to promote the dehydration crosslinking reaction, reduce the curing temperature of the baking varnish and save energy.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts the adhesion promoter to realize that the waterborne acrylic amino baking varnish has good adhesion on the surfaces of carbon steel, stainless steel, aluminum alloy and other metals, so the adaptability is particularly strong;
2. the invention adopts the acid catalyst to promote the dehydration crosslinking reaction, reduce the thermosetting temperature of the water-based acrylic amino baking varnish and save energy;
3. the invention adopts the nano phosphate antirust sizing agent to enhance the salt spray resistance and corrosion resistance of the waterborne acrylic amino baking paint.
Detailed Description
The following describes an implementation of the present invention with reference to specific embodiments.
Example 1
A high-performance water-based acrylic amino baking varnish is composed of the following raw materials in percentage by weight: 25% of hydroxyl acrylic acid dispersoid (with the solid content of 55%), 1% of dimethylethanolamine, 2% of ethylene glycol monobutyl ether, 4% of cyante 325 amino resin, 30% of nano aluminum tripolyphosphate antirust slurry (with the solid content of 10% and the particle diameter of less than or equal to 200nm), 0.5% of BYK 0240.1%, BYK 3460.5%, 0.5% of X49-110 acid catalyst, 1% of Lumboluo 2063 promoter and 35.9% of deionized water.
The preparation method comprises the following steps:
adding hydroxyl acrylic acid dispersoid, dimethylethanolamine and deionized water into stirring equipment, and stirring to dissolve the materials; adding the rest components in sequence, stirring (rotating speed 500rpm) for 5h, and discharging. Spraying construction, wherein the curing temperature is 150 ℃, the curing time is 20min, the thickness is 25 +/-5 mu m, the adhesive force is grade 1, the pencil hardness is 2H, and the salt spray resistance is 360H.
Example 2
A high-performance water-based acrylic amino baking varnish is composed of the following raw materials in percentage by weight: 45% of hydroxyl acrylic acid dispersoid (solid content is 45%), 2% of dimethylethanolamine, 5% of propylene glycol monomethyl ether, 8% of cyanote 325 amino resin, 10% of nano zinc-aluminum phosphate antirust slurry (solid content is 30%, particle size is less than or equal to 200nm), 2% of Tego8200.5%, Tego2800.1%, 2% of X49-110 acid catalyst, 5% of Lu bo run 2063 accelerator and 22.4% of deionized water.
The preparation method comprises the following steps:
adding hydroxyl acrylic acid dispersoid, dimethylethanolamine and deionized water into stirring equipment, and stirring to dissolve the materials; adding the rest components in sequence, stirring (rotating speed 2000rpm) for 1h, and discharging. Spraying construction, wherein the curing temperature is 130 ℃, the curing time is 20min, the thickness is 25 +/-5 mu m, the adhesive force is 0 grade, the pencil hardness is 3H, and the salt spray resistance is 420H.
Example 3
A high-performance water-based acrylic amino baking varnish is composed of the following raw materials in percentage by weight: 34% of hydroxyl acrylic acid dispersoid (with the solid content of 50%), 1.5% of dimethylethanolamine, 3% of propylene glycol butyl ether, 7% of cyanote 325 amino resin, 24% of nano aluminum tripolyphosphate antirust slurry (with the solid content of 20% and the particle diameter of less than or equal to 200nm), 1% of Tego8200.3%, 0.3% of Tego2800%, 1% of X49-110 acid catalyst, 3% of Lumboluo 2063 accelerator and 25.9% of deionized water.
The preparation method comprises the following steps:
adding hydroxyl acrylic acid dispersoid, dimethylethanolamine and deionized water into stirring equipment, and stirring to dissolve the materials; adding the rest components in sequence, continuing stirring (rotating speed 1000rpm) for 3h, and discharging. Spraying construction, wherein the curing temperature is 135 ℃, the curing time is 20min, the thickness is 25 +/-5 mu m, the adhesive force is 0 grade, the pencil hardness is 3H, and the salt spray resistance is 500H.
Comparative embodiment
The following comparative examples were each set up on the basis of example 3, which was the best overall performance of the 3 cases described above.
Comparative example 1
The acid catalyst X49-110% and the deionized water 26.9% in the example 3 are replaced by the acid catalyst X49-110% and the deionized water 27.9%, and the rest is the same as the example 3, wherein the adhesion force of the amino baking varnish is grade 1, the pencil hardness is 2H, and the salt spray resistance is 128H.
Comparative example 2
The catalyst composition is prepared by replacing the catalyst composition of 1% of the acid X49-110 and 26.9% of deionized water in example 3 with the catalyst composition of 0.2% of the acid X49-110 and 26.7% of deionized water, and the rest is the same as example 3, wherein the adhesion of the amino baking varnish is grade 1, the pencil hardness is 3H, and the salt spray resistance is 240H.
Comparative example 3
The acid catalyst X49-110% and the deionized water 26.9% in the example 3 are replaced by the acid catalyst X49-110% and the deionized water 25.9%, and the rest is the same as the example 3, wherein the adhesion of the amino baking varnish is 0 grade, the pencil hardness is 3H, and the salt spray resistance is 500H.
It can be seen from comparative example 1 that when no acid catalyst is added to the amino baking varnish, the baking varnish is not completely cured at 135 ℃, and thus the coating properties are deteriorated, while it can be seen from comparative example 2 that when the amount of the acid catalyst is too low, the coating is not completely cured and the properties are also deteriorated, and it can be seen from comparative example 3 that when the amount of the acid catalyst is too high, there is no significant enhancement in the degree of curing and properties of the coating.
Comparative example 4
The preparation method is characterized in that the preparation method comprises the steps of replacing 3% of Lubo moist 2063 accelerant and 26.9% of deionized water in example 3 by 0% of Lubo moist 2063 accelerant and 29.9% of deionized water, and the rest is the same as that in example 3, the adhesion force of amino baking varnish is grade 2, the pencil hardness is 1H, and the salt spray resistance is 96H.
Comparative example 5
The materials of 'Lubo moist 2063 accelerant 3% and deionized water 26.9%' in example 3 are replaced by 'Lubo moist 2063 accelerant 0.5% and deionized water 29.4%', and the rest are the same as those of example 3, wherein the adhesion force of the amino baking varnish is grade 1, the pencil hardness is 2H, and the salt spray resistance is 240 hours.
Comparative example 6
The preparation method is characterized in that the preparation method comprises the steps of replacing 3% of Lubo moist 2063 accelerant and 26.9% of deionized water in example 3 by 6% of Lubo moist 2063 accelerant and 23.9% of deionized water, and the rest is the same as that in example 3, wherein the adhesion force of the amino baking varnish is 0 grade, the pencil hardness is 3H, and the salt spray resistance is 500 hours.
It can be seen from comparative example 4 that the baking varnish adhesion is obviously reduced when no adhesion promoter is added in the formula, while it can be seen from comparative examples 5-6 that when the amount of the adhesion promoter in the formula is too small, the adhesion of the coating is still insufficient, and the pencil hardness and the salt spray resistance are further influenced, but when the amount of the adhesion promoter is too large, the coating performance is not further enhanced.
Comparative example 7
The method comprises the steps of replacing 24% of nano aluminum tripolyphosphate antirust slurry (solid content is 20%, particle size is less than or equal to 200nm) and 26.9% of deionized water in example 3 with 34% of nano aluminum tripolyphosphate antirust slurry (solid content is 20%, particle size is less than or equal to 200nm) and 13.9% of deionized water, and the rest is the same as example 3, wherein the amino baking varnish adhesion is grade 1, the pencil hardness is 1H, and the salt spray resistance is 240H.
Comparative example 8
The nano aluminum tripolyphosphate antirust slurry (with the solid content of 20 percent and the particle size of less than or equal to 200nm) and the deionized water of 26.9 percent in the example 3 are replaced by 8 percent of the nano aluminum tripolyphosphate antirust slurry (with the solid content of 20 percent and the particle size of less than or equal to 200nm) and 42.9 percent of the deionized water, and the rest is the same as the example 3, the amino baking varnish adhesive force is 1 grade, the pencil hardness is 2H, and the salt spray resistance is 96 hours.
From comparative examples 7-8, it can be seen that the amount of the nano aluminum tripolyphosphate anti-rust slurry has a large influence on the baking varnish performance, especially on the salt spray resistance of the baking varnish.
Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (3)
1. The water-based acrylic amino baking varnish is characterized by comprising the following raw materials in percentage by weight: 25-45% of hydroxyl acrylic acid dispersoid, 1-2% of dimethylethanolamine, 2-5% of alcohol ether, 4-8% of amino resin, 10-30% of nano phosphate antirust slurry, 0.1-0.5% of defoaming agent, 0.1-0.5% of flatting agent, 0.5-2.0% of acid catalyst, 1-5% of adhesion promoter and 22.4-35.9% of deionized water.
2. The aqueous acrylic amino baking varnish according to claim 1, wherein the solid content of the hydroxy acrylic dispersion is 45-55%; the alcohol ether is any one of ethylene glycol butyl ether, propylene glycol methyl ether and propylene glycol butyl ether; the amino resin is cyanogen 325 resin; the nano phosphate antirust slurry is aluminum tripolyphosphate slurry or zinc aluminum phosphate slurry, the solid content is 10-30%, and the particle size is less than or equal to 200.0 nm; the defoaming agent is one of BYK024 and Tego 820; the leveling agent is BYK346 or Tego 280; the acid catalyst is a King's X49-110 acid catalyst; the adhesion promoter is Luborun 2063 promoter.
3. The method for preparing the aqueous acrylic amino baking varnish according to claim 1 or 2, characterized by comprising the following steps:
(1) taking the following raw material components in percentage by weight: 25-45% of hydroxyl acrylic acid dispersoid, 1-2% of dimethylethanolamine, 2-5% of alcohol ether, 4-8% of amino resin, 10-30% of nano phosphate antirust slurry, 0.1-0.5% of defoaming agent, 0.1-0.5% of flatting agent, 0.5-2.0% of acid catalyst, 1-5% of adhesion promoter and 22.4-35.9% of deionized water;
(2) adding hydroxyl acrylic acid dispersoid, dimethylethanolamine and deionized water into stirring equipment, and stirring to dissolve the materials;
(3) and sequentially adding the rest components, and continuously stirring at the rotating speed of 500-2000 rpm for 1-5 h to obtain the water-based acrylic amino baking paint product.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112724772A (en) * | 2020-12-29 | 2021-04-30 | 广东绿色大地化工有限公司 | Composite modified acrylic amino water-based baking paint |
| CN114621643A (en) * | 2022-03-31 | 2022-06-14 | 惠尔明（福建）化学工业股份有限公司 | Water-based amino baking paint with good stability and preparation method thereof |
| CN115960488A (en) * | 2022-12-22 | 2023-04-14 | 长飞光纤光缆股份有限公司 | UV-cured and thermosetting dual-curing water transfer printing gold stamping base oil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112724772A (en) * | 2020-12-29 | 2021-04-30 | 广东绿色大地化工有限公司 | Composite modified acrylic amino water-based baking paint |
| CN114621643A (en) * | 2022-03-31 | 2022-06-14 | 惠尔明（福建）化学工业股份有限公司 | Water-based amino baking paint with good stability and preparation method thereof |
| CN115960488A (en) * | 2022-12-22 | 2023-04-14 | 长飞光纤光缆股份有限公司 | UV-cured and thermosetting dual-curing water transfer printing gold stamping base oil |
| CN115960488B (en) * | 2022-12-22 | 2023-11-03 | 长飞光纤光缆股份有限公司 | UV (ultraviolet) curing and heat curing dual-curing water transfer printing gold stamping base oil |
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Application publication date: 20200421 |