CN110791158A - Water-based quick-drying silver paint and preparation method thereof - Google Patents
Water-based quick-drying silver paint and preparation method thereof Download PDFInfo
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- CN110791158A CN110791158A CN201911088370.4A CN201911088370A CN110791158A CN 110791158 A CN110791158 A CN 110791158A CN 201911088370 A CN201911088370 A CN 201911088370A CN 110791158 A CN110791158 A CN 110791158A
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- water
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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
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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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of coatings, and particularly discloses a water-based quick-drying silver paint and a preparation method thereof. The water-based quick-drying silver paint comprises the following components in percentage by mass: 40-45% of aqueous fluorocarbon self-crosslinking acrylic emulsion, 20-25% of aliphatic polyurethane resin dispersoid, 0.1-0.2% of defoaming agent, 0.3-0.5% of dispersing agent, 0.3-0.5% of leveling wetting agent, 1-2% of flash rust inhibitor, 1-2% of pH regulator, 5-7% of film forming auxiliary agent, 0.5-1% of oil-resistant agent, 4-8% of aluminum powder and the balance of deionized water. The surface drying speed and the actual drying speed of the water-based quick-drying silver powder paint are not greatly different, so that aluminum powder in a paint film can be directionally and uniformly arranged, higher salt spray resistance and water resistance are achieved, and the water-based quick-drying silver powder paint has better service performance.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a water-based quick-drying silver paint and a preparation method thereof.
Background
The silver powder paint is a paint-like substance obtained by adding aluminum powder into a coating after dilution, is mostly used on pipelines such as water pipes and the like in old buildings, and has good flashing effect and excellent corrosion resistance, water resistance, temperature resistance and rust resistance, so the existing silver powder paint is widely used on heating equipment, vehicles and metal pipelines and other metal surfaces needing corrosion resistance.
The solvent in the silver paint is volatilized to enable a paint film to shrink, the aluminum pigment is pressed into a horizontal orientation position finally, when aluminum powder and the paint film are oriented in parallel, the best effect can be achieved, the orientation effect is more obvious when the solvent content is higher, therefore, the paint with low solid content has a better effect than the paint with high solid content, but if the solvent content is higher, the difference between the surface drying speed and the actual drying speed is larger in the drying process of the paint film, so that the surface of the paint film is dried, the internal solvent is volatilized, the aluminum sheet orientation arrangement is influenced, the cavity is formed on the surface of the paint film, and the appearance, the salt spray resistance and other performances of the paint film are influenced.
Disclosure of Invention
The invention provides a water-based quick-drying silver paint and a preparation method thereof, aiming at the problems that the surface drying speed and the actual drying speed of the existing silver paint are different greatly, the directional arrangement of aluminum sheets is influenced, cavities are formed on the surface of a paint film, and the appearance of the paint film and the service performance such as salt spray resistance are influenced.
In order to achieve the purpose, the invention adopts the following technical scheme:
the water-based quick-drying silver paint comprises the following components in percentage by mass:
40-45% of aqueous fluorocarbon self-crosslinking acrylic emulsion, 20-25% of aliphatic polyurethane resin dispersoid, 0.1-0.2% of defoaming agent, 0.3-0.5% of dispersing agent, 0.3-0.5% of leveling wetting agent, 1-2% of flash rust inhibitor, 1-2% of pH regulator, 5-7% of film forming auxiliary agent, 0.5-1% of oil-resistant agent, 4-8% of aluminum powder and the balance of deionized water.
Compared with the prior art, the water-based quick-drying silver paint provided by the invention has the characteristics that the water-based fluorocarbon self-crosslinking acrylic emulsion has a high film-forming characteristic at normal temperature, the self-crosslinking process is completed through dehydration condensation reaction of intermolecular groups, but in the self-film-forming process of the water-based fluorocarbon self-crosslinking acrylic emulsion, an emulsifier contained in the water-based fluorocarbon self-crosslinking acrylic emulsion has certain hydrophilicity, so that water molecules generated by dehydration condensation of the water-based fluorocarbon self-crosslinking acrylic emulsion in the film-forming process are not easy to discharge, the drying speed of the surface of a paint film is higher than that of the interior of the paint film, the arrangement effect of aluminum powder in the paint film is influenced, in order to overcome the defect, a large amount of aluminum powder arrangement auxiliary agents are usually added into the paint; the aliphatic polyurethane resin dispersoid has strong intermolecular cohesion, and can be tightly aggregated with a self-crosslinking polymer in the waterborne fluorocarbon self-crosslinking acrylic emulsion through intermolecular force after a specific amount of the aliphatic polyurethane resin dispersoid is added into the waterborne fluorocarbon self-crosslinking acrylic emulsion, active groups are mutually wrapped, water molecules generated in the film forming process of the waterborne fluorocarbon self-crosslinking acrylic emulsion are extruded out, the water molecules in a paint film are quickly discharged, the difference between the surface drying speed and the actual drying speed of the paint film is reduced, aluminum powder is uniformly arranged in a directional mode, aluminum powder arrangement auxiliaries are not needed, and the salt fog resistance and the water resistance of the paint film are improved. And the waterborne fluorocarbon self-crosslinking acrylic emulsion is combined with the aliphatic polyurethane resin dispersion, so that the adhesive force performance and impact resistance of a paint film on the surface of a metal substrate can be greatly improved, and higher hardness and use requirements can be met.
Preferably, the type of the aqueous fluorocarbon self-crosslinking acrylic emulsion is F-830, and F-830 of Shandong Moore chemical industry can be selected.
The solid content of the F-830 aqueous fluorocarbon self-crosslinking acrylic emulsion is 42 percent, the pH value is 8, and the content of the fluorine monomer is 9 percent; has the characteristics of high glossiness, good water resistance and water-white resistance, good flexibility, high hardness and no APEO and VOC.
Preferably, the aliphatic polyurethane resin dispersion is Bayhydrol UH 2621, available as Bayhydrol UH 2621 from bayer corsai.
The aliphatic polyurethane resin dispersion Bayhydrol UH 2621 has high stone chip resistance and water resistance, and the formed paint film has high drying speed and good appearance effect.
Preferably, the anti-foaming agent is a mixture of a hydrophobic solid and a foam breaking polysiloxane in a polyglycol, optionally BYK028 from Byk.
Preferably, the dispersant is a high molecular weight block copolymer solution containing pigment affinity groups, and BYK-190 can be selected.
The dispersant has high dispersion effect in the aliphatic polyurethane resin dispersion paint, so that the solid filler in the paint is fully dispersed.
Preferably, the leveling wetting agent is a polyether modified polydimethylsiloxane solution, and BYK346 of Bik can be selected.
Preferably, the flash rust inhibitor is sodium nitrite.
Sodium nitrite can cause metal passivation, and the metal can generate a protective oxide film after being treated by the sodium nitrite, so that the metal is not easy to be corroded by the external environment.
Preferably, the PH adjusting agent is dimethylethanolamine.
Preferably, the coalescing agent is an alcohol ester twelve.
Preferably, the oil-resistant agent is an organosilicon gemini structure surfactant, and TEGO4100 with digao can be selected.
The organosilicon gemini surfactant has excellent wettability, can be used for solving the problem of paint surface shrinkage cavity of a metal substrate caused by pollution of a release agent, lubricating oil and the like, improves the wettability of the substrate, and can also promote the leveling property and the storage stability of a coating.
Preferably, the aluminum powder is non-floating aluminum powder, and WG-052D water-based aluminum powder can be selected.
The non-floating aluminum powder can be uniformly and parallelly distributed in the whole coating film and is wrapped by resin, so that the coating film has good oxidation resistance and wear resistance, good weather resistance, acid and alkali resistance, no fingerprint and bright surface.
The invention also provides a preparation method of the water-based quick-drying silver paint, which at least comprises the following steps:
a. uniformly mixing deionized water, a dispersing agent and aluminum powder, stirring for 10-15min at the speed of 500r/min, and standing for 0.5-1h to obtain water-based silver paste;
b. uniformly mixing the aqueous fluorocarbon self-crosslinking acrylic emulsion and the aliphatic polyurethane resin dispersoid, sequentially adding a film-forming assistant, a pH regulator, an anti-flash rust agent, a defoaming agent, a wetting leveling agent and an oil-resistant agent under the condition of stirring at the rotating speed of 800-;
c. and adding the water-based silver paste into the varnish under the condition of stirring rotation speed of 600-800r/min, and continuously stirring for 10-15min to obtain the water-based quick-drying silver paint.
Compared with the prior art, the preparation method of the water-based silver paint provided by the invention is simple to operate, has low equipment requirement, and the obtained water-based silver paint is uniform in dispersion and strong in constructability.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
The water-based quick-drying silver paint comprises the following components in percentage by mass:
wherein the aqueous fluorocarbon self-crosslinking acrylic emulsion is F-830 of Shandong Moore chemical industry; the aliphatic polyurethane resin dispersoid is Bayhydrol UH 2621 made by Bayer Corsia; BYK028 of bike is selected as the defoaming agent; BYK-190 of Pico is selected as the dispersant; the oil-resistant agent is TEGO4100 with the height of Digao; the aluminum powder is WG-052D aqueous aluminum powder.
The preparation method of the water-based quick-drying silver paint comprises the following steps:
a. uniformly mixing deionized water, a dispersing agent and aluminum powder, stirring at 500r/min for 12min, and standing for 40min to obtain water-based silver paste;
b. uniformly mixing the aqueous fluorocarbon self-crosslinking acrylic emulsion and the aliphatic polyurethane resin dispersoid, sequentially adding alcohol ester dodeca, dimethylethanolamine, sodium nitrite, a defoaming agent, a polyether modified polydimethylsiloxane solution and an oil-resistant agent under the condition of stirring at the rotating speed of 900r/min, and continuously stirring for 12min to obtain varnish;
c. and adding the water-based silver paste into the varnish under the condition of stirring rotation speed of 700r/min, and continuously stirring for 12min to obtain the water-based quick-drying silver paint.
Comparative example 1
The same amount of aromatic polyurethane resin was used instead of the aliphatic polyurethane resin dispersion in example 1, and the other components and the preparation method were the same as in example 1, to obtain an aqueous quick-drying silver paint.
The properties of the aqueous quick-drying silver paint obtained in examples 1 to 3 and comparative example 1 were measured, and the results are shown in the following table:
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The water-based quick-drying silver paint is characterized in that: the composite material comprises the following components in percentage by mass:
40-45% of aqueous fluorocarbon self-crosslinking acrylic emulsion, 20-25% of aliphatic polyurethane resin dispersoid, 0.1-0.2% of defoaming agent, 0.3-0.5% of dispersing agent, 0.3-0.5% of leveling wetting agent, 1-2% of flash rust inhibitor, 1-2% of pH regulator, 5-7% of film forming auxiliary agent, 0.5-1% of oil-resistant agent, 4-8% of aluminum powder and the balance of deionized water.
2. The aqueous quick-drying silver paint of claim 1, wherein: the type of the aqueous fluorocarbon self-crosslinking acrylic emulsion is F-830.
3. The aqueous quick-drying silver paint of claim 1, wherein: the aliphatic polyurethane resin dispersion is of type Bayhydrol UH 2621.
4. The aqueous quick-drying silver paint of claim 1, wherein: the defoaming agent is a mixture of hydrophobic solids and foam breaking polysiloxane in polyglycol.
5. The aqueous quick-drying silver paint of claim 1, wherein: the dispersant is a high molecular weight block copolymer solution containing pigment affinity groups.
6. The aqueous quick-drying silver paint of claim 1, wherein: the leveling wetting agent is polyether modified polydimethylsiloxane solution.
7. The aqueous quick-drying silver paint of claim 1, wherein: the flash rust inhibitor is sodium nitrite.
8. The aqueous quick-drying silver paint of claim 1, wherein: the pH regulator is dimethylethanolamine; and/or
The film-forming aid is alcohol ester twelve.
9. The aqueous quick-drying silver paint of claim 1, wherein: the oil-resistant agent is an organic silicon gemini structure surfactant; and/or
The aluminum powder is non-floating aluminum powder.
10. A method for preparing an aqueous quick-drying silver paint according to any one of claims 1 to 9, characterized in that: at least comprises the following steps:
a. uniformly mixing deionized water, a dispersing agent and aluminum powder, stirring for 10-15min at the speed of 500r/min, and standing for 0.5-1h to obtain water-based silver paste;
b. uniformly mixing the aqueous fluorocarbon self-crosslinking acrylic emulsion and the aliphatic polyurethane resin dispersoid, sequentially adding a film-forming assistant, a pH regulator, an anti-flash rust agent, a defoaming agent, a wetting leveling agent and an oil-resistant agent under the condition of stirring at the rotating speed of 800-;
c. and adding the water-based silver paste into the varnish under the condition of stirring rotation speed of 600-800r/min, and continuously stirring for 10-15min to obtain the water-based quick-drying silver paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911088370.4A CN110791158A (en) | 2019-11-08 | 2019-11-08 | Water-based quick-drying silver paint and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911088370.4A CN110791158A (en) | 2019-11-08 | 2019-11-08 | Water-based quick-drying silver paint and preparation method thereof |
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| CN110791158A true CN110791158A (en) | 2020-02-14 |
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| CN201911088370.4A Pending CN110791158A (en) | 2019-11-08 | 2019-11-08 | Water-based quick-drying silver paint and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111286243A (en) * | 2020-03-24 | 2020-06-16 | 山东七维新材料有限公司 | Water-based acrylic silver paint suitable for mechanical equipment and preparation method thereof |
-
2019
- 2019-11-08 CN CN201911088370.4A patent/CN110791158A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111286243A (en) * | 2020-03-24 | 2020-06-16 | 山东七维新材料有限公司 | Water-based acrylic silver paint suitable for mechanical equipment and preparation method thereof |
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Application publication date: 20200214 |
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