CN113025142A - Single-component water-based quick-drying high-gloss paint for high-humidity environment and preparation method thereof - Google Patents
Single-component water-based quick-drying high-gloss paint for high-humidity environment and preparation method thereof Download PDFInfo
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- CN113025142A CN113025142A CN202110280786.7A CN202110280786A CN113025142A CN 113025142 A CN113025142 A CN 113025142A CN 202110280786 A CN202110280786 A CN 202110280786A CN 113025142 A CN113025142 A CN 113025142A
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a single-component water-based quick-drying high-gloss paint for a high-humidity environment and a preparation method thereof, wherein the paint comprises the following raw materials in parts by weight: acrylic emulsion, silica sol, functional additive, film forming additive, thickening agent, pigment, filler and distilled water. The preparation method comprises the following steps: uniformly mixing acrylic emulsion and silica sol, and then adding a functional auxiliary agent to obtain a solution I; stirring the pigment, the filler and the distilled water uniformly, and adding the functional auxiliary agent into the mixture to obtain a solution II; and slowly adding the solution II into the solution, controlling the adding flow rate to be 0.5L/min, then adding bentonite and a thickening agent into the solution, then adding a film-forming aid into the solution, and uniformly mixing the solution and the thickening agent. The surface drying time of the coating is between 6 and 28.5min in a 60 to 95 percent high-humidity environment, and the coating has the advantage of short surface drying time; the preparation method of the coating is matched with the raw materials of the coating, and the method has the advantages of reasonable design, easily controlled process and easy production.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a single-component water-based quick-drying high-gloss coating for a high-humidity environment and a preparation method thereof.
Background
The water-based paint is an environment-friendly industrial paint obtained by using water as a solvent, improves the construction safety of the paint due to reduction of the use of organic solvents, and effectively avoids the occurrence probability of risks such as air pollution, explosion, fire and the like, so the water-based paint has wide application prospect.
The water-based paint uses water as a medium, so the drying time and the like of the water-based paint are influenced by the environmental temperature and the environmental humidity, when the air humidity is more than or equal to 60 percent, the drying speed of the water-based paint is extremely slow, and the paint needs to be repeatedly coated for 2 to 3 times after the upper layer is dried when the paint is used, so the high-humidity environment obviously influences the paint construction; in addition, in a high-humidity environment, the adhesion of the coating is poor, and phenomena such as air bubbles and falling off are easily generated, which seriously affect the performance of the coating.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the single-component water-based quick-drying high-gloss paint for the high-humidity environment and the preparation method thereof, wherein in the paint, various raw materials are mutually cooperated, so that a paint film formed after the paint is coated has good water resistance, salt spray resistance and impact resistance, and has the advantage of high adhesive force; in addition, the surface drying time of the coating is 6-28.5min in a 60-95% high-humidity environment, and the advantage of short surface drying time is achieved; the preparation method of the coating is matched with the raw materials of the coating, and the method has the advantages of reasonable design, easily controlled process and easy production.
The technical scheme of the invention is as follows:
the single-component water-based quick-drying high-gloss paint for the high-humidity environment comprises the following raw materials in parts by weight:
50-80 parts of acrylic emulsion, 10-20 parts of silica sol, 1-5 parts of functional additive, 1-15 parts of film-forming additive, 0.1-1 part of thickening agent, 0.5-2 parts of pigment, 20-40 parts of filler and 2-10 parts of distilled water.
Preferably, the acrylic emulsion consists of acrylic emulsion and vinyl acetate emulsion, the pH of the acrylic emulsion is 7.0-9.0, and the minimum film-forming temperature is 28 ℃.
Preferably, the volume ratio of the pure acrylic emulsion and the vinyl acetate emulsion which form the acrylic emulsion is 4-6: 1.
Preferably, the functional auxiliary agent is one or more of a combination of a water-based organic silicon defoaming agent, an amine neutralizing agent, a silane coupling agent and a substrate wetting agent.
Preferably, the film-forming auxiliary agent is an alcohol ester film-forming substance.
Preferably, the thickener is a polyurethane associative rheological aid.
Preferably, the pigment is titanium dioxide.
Preferably, the filler is one or a combination of mica powder, ferrotitanium powder, barium sulfate and the like.
Preferably, bentonite is also added into the coating, and 2-4 parts of bentonite is added into the coating.
Silica sol is a dispersion liquid obtained by dispersing silica particles of nanometer order in water, and contains a large amount of silicon hydroxyl groups therein.
After coating, as the moisture is reduced, the colloidal molecules of the silica sol are attached to the surface of an object, and the silicon hydroxyl groups in the colloidal molecules of the silica sol are subjected to two reactions, wherein one reaction is the combination of the silicon hydroxyl groups to form a silicon-oxygen bond, so that the compactness of a film after the coating is formed is improved, and the paint film has good water resistance and salt spray resistance; the other reaction is that the silicon hydroxyl in the silica sol and the acrylic emulsion are subjected to a cross-linking reaction to form a mesh, and the pigment and the filler are uniformly distributed in the mesh, so that the impact resistance and pencil hardness of the paint film are further improved; the two reactions are carried out simultaneously after coating to form a compact structure, so that the paint film has excellent performance.
The preparation method of the single-component water-based quick-drying high-gloss coating for the high-humidity environment comprises the following steps:
(1) putting the acrylic emulsion and the silica sol into a stirring tank I, starting stirring, controlling the stirring speed to be between 2000-3000r/min, uniformly mixing, and then adding the functional auxiliary agent into the mixture to obtain a solution I for later use;
(2) putting the pigment, the filler and the distilled water into a stirring tank II, starting stirring, controlling the stirring speed at 1000-1500r/min, uniformly stirring, and adding the functional auxiliary agent into the mixture to obtain a solution II for later use;
(3) and (3) slowly adding the solution II obtained in the step (2) into the step (1), controlling the adding flow rate to be 0.5L/min, adding bentonite and a thickening agent when the adding amount of the solution II reaches 80% of the total volume of the solution II, continuing stirring for 10min after the solution II is added, adding a film-forming aid into the solution, and uniformly mixing.
Preferably, in the step (1), the amount of the functional additives added is 78-85% of the total amount of the functional additives.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the coating disclosed by the invention, a paint film formed after the coating is coated has the advantages of good water resistance, strong salt spray resistance, strong impact resistance and high adhesive force; the surface drying time of the coating is between 6 and 28.5min in a high-humidity environment with 60 to 95 percent RH, the surface drying time is short, and the coating is suitable for multiple coating.
2. The preparation method of the coating is matched with the raw materials of the coating, and the method has the advantages of reasonable design, easily controlled process and easy production.
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 with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Example 1
The single-component water-based quick-drying high-gloss paint for the high-humidity environment comprises the following raw materials in parts by weight:
60 parts of acrylic emulsion, 15 parts of silica sol, 2.8 parts of functional additive, 10 parts of film-forming additive, 0.4 part of polyurethane associated rheological additive, 1.3 parts of titanium dioxide, 30 parts of filler, 5 parts of distilled water and 2.5 parts of bentonite;
the pH value of the acrylic emulsion is 8.3, and the lowest film-forming temperature is 28 ℃; the volume ratio of the pure acrylic emulsion and the vinyl acetate-acrylic emulsion of the acrylic emulsion is 5: 1;
the functional assistant consists of a water-based organic silicon defoamer, an amine neutralizer and a silane coupling agent, wherein the mass ratio of the water-based organic silicon defoamer to the amine neutralizer to the silane coupling agent is 1:1.7: 2.6;
the filler is composed of mica powder and ferrotitanium powder in a mass ratio of 1: 2.
The preparation method of the single-component water-based quick-drying high-gloss coating for the high-humidity environment comprises the following steps:
(1) putting the acrylic emulsion and the silica sol into a stirring tank I, starting stirring, controlling the stirring speed to be 2500r/min, uniformly mixing, and then adding 2.24 parts of functional auxiliary agent into the mixture to obtain a solution I for later use;
(2) putting the pigment, the filler and the distilled water into a stirring tank II, starting stirring, controlling the stirring speed at 1000r/min, uniformly stirring, and adding 0.56 part of functional auxiliary agent to obtain a solution II for later use;
(3) and (3) slowly adding the solution II obtained in the step (2) into the step (1), controlling the adding flow rate to be 0.5L/min, adding bentonite and a thickening agent when the adding amount of the solution II reaches 80% of the total volume of the solution II, continuing stirring for 10min after the solution II is added, adding a film-forming aid into the solution, and uniformly mixing.
Example 2
The single-component water-based quick-drying high-gloss paint for the high-humidity environment comprises the following raw materials in parts by weight:
50 parts of acrylic emulsion, 10 parts of silica sol, 1 part of functional additive, 1 part of alcohol ester film forming substance, 0.1 part of polyurethane associated rheological additive, 0.5 part of titanium dioxide, 20 parts of filler, 2 parts of distilled water and 2 parts of bentonite;
the acrylic emulsion consists of pure acrylic emulsion and vinyl acetate-acrylic emulsion, and the volume ratio of the pure acrylic emulsion to the vinyl acetate-acrylic emulsion is 4: 1; the pH value of the acrylic emulsion is 7.2, and the lowest film-forming temperature is 28 ℃;
the functional assistant consists of a water-based organic silicon defoaming agent and a silane coupling agent in a mass ratio of 0.3: 1.2;
the filler consists of mica powder, ferrotitanium powder and barium sulfate in a mass ratio of 1.1:0.5: 1.5.
The preparation method of the single-component water-based quick-drying high-gloss coating for the high-humidity environment comprises the following steps:
(1) putting the acrylic emulsion and the silica sol into a stirring tank I, starting stirring, controlling the stirring speed to be 2000r/min, uniformly mixing, and then adding 0.78 parts of functional auxiliary agent into the mixture to obtain a solution I for later use;
(2) putting the pigment, the filler and the distilled water into a stirring tank II, starting stirring, controlling the stirring speed at 1500r/min, uniformly stirring, and adding 0.22 part of functional auxiliary agent to obtain a solution II for later use;
(3) same as example 1, step (3).
Example 3
The single-component water-based quick-drying high-gloss paint for the high-humidity environment comprises the following raw materials in parts by weight:
80 parts of acrylic emulsion, 20 parts of silica sol, 5 parts of functional additive, 15 parts of alcohol ester film forming substance, 1 part of polyurethane associated rheological additive, 2 parts of titanium dioxide, 40 parts of filler, 10 parts of distilled water and 4 parts of bentonite;
the acrylic emulsion consists of pure acrylic emulsion and vinyl acetate-acrylic emulsion, and the volume ratio of the pure acrylic emulsion to the vinyl acetate-acrylic emulsion is 6: 1; the pH value of the acrylic emulsion is 8.8, and the lowest film-forming temperature is 28 ℃;
the functional assistant consists of a silane coupling agent and a base material wetting agent in a mass ratio of 2: 1.2;
the filler is prepared from the following components in percentage by mass of 0.2: 1.4 mica powder and barium sulfate.
The preparation method of the single-component water-based quick-drying high-gloss coating for the high-humidity environment comprises the following steps:
(1) putting the acrylic emulsion and the silica sol into a stirring tank I, starting stirring, controlling the stirring speed to be 3000r/min, uniformly mixing, and then adding 4.25 parts of functional auxiliary agent into the mixture to obtain a solution I for later use;
(2) putting 0.5-2 parts of pigment, 20-40 parts of filler and distilled water into a stirring tank II, starting stirring, controlling the stirring speed at 1000-1500r/min, uniformly stirring, and adding 0.75 part of functional auxiliary agent to obtain a solution II for later use;
(3) same as example 1, step (3).
Example 4
The difference from example 1 is that no bentonite is added and the amount of each of the remaining raw materials is kept constant.
Example 5
The difference from example 2 is that no bentonite was added and the amount of each of the remaining raw materials was kept constant.
Example 6
The difference from example 3 is that no bentonite is added and the amount of each of the remaining raw materials is kept constant.
The coatings provided in examples 1 to 6 were applied to the substrates as 1 set, and 6 sets, reference numbers 1#, 2#, 3#, 4#, 5# and 6# were repeatedly applied;
placing the No. 1, 2, 3, 4, 5 and 6 substrates under the conditions of 60% RH, 70% RH, 80% RH, 85% RH, 90% RH and 95% RH humidity respectively, counting the surface drying time of the coating, and detecting the performance of the paint film, see Table 1.
TABLE 1 Property testing of the coatings
In table 1, the method for detecting adhesion stability is: at 50 ℃ and 7d, the problems of sedimentation, thickening, color change and the like do not exist, and the method refers to the national standard: GB/T6753.3;
the detection method of the mechanical stability comprises the following steps: stirring for 0.5h at 4000r/min by using a high-speed stirrer, and observing whether demulsification and agglomeration exist;
the detection method of the surface drying time comprises the following steps: GB/T13477-92;
the detection method of the adhesive force comprises the following steps: GB/T1720-79 (89);
the gloss (60 °) was measured by the following method: GB/T1743-;
the flexibility detection method comprises the following steps: GB/T1731-93;
the method for detecting the hardness (pencil) comprises the following steps: GB/T6739-2006;
the detection method of impact resistance of 1kg × cm, cm is as follows: GB/T1732-93;
the detection method of water resistance/d comprises the following steps: the paint is not rusted, does not bubble and does not fall off;
the detection method of the salt spray resistance/h comprises the following steps: it has no rustiness, no bubble and no shedding.
As can be seen from Table 1, the surface drying time of the coating is within 30 min; the paint must be ensured to be surface-dried when being coated in multiple layers, so that the second coating can be carried out within 30min even in a humidity environment with 95% RH; in addition, the coating applied in a high humidity environment has high water resistance and salt spray resistance, which shows that the raw materials and the method are matched, and the obtained coating has excellent performance.
Although the present invention has been described in detail by referring to the 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 single-component water-based quick-drying high-gloss paint for the high-humidity environment is characterized by comprising the following raw materials in parts by weight:
50-80 parts of acrylic emulsion, 10-20 parts of silica sol, 1-5 parts of functional additive, 1-15 parts of film-forming additive, 0.1-1 part of thickening agent, 0.5-2 parts of pigment, 20-40 parts of filler and 2-10 parts of distilled water.
2. The one-part aqueous fast-drying high gloss paint for high humidity environment of claim 1, wherein the acrylic emulsion is composed of acrylic emulsion and acrylic emulsion, the acrylic emulsion has a pH of 7.0-9.0 and a minimum film forming temperature of 28 ℃.
3. The one-component aqueous quick-drying high-gloss paint for high humidity environment of claim 2, wherein the volume ratio of the acrylic emulsion to the vinyl emulsion is 4-6: 1.
4. The one-component water-based quick-drying high-gloss paint for high-humidity environment according to claim 1, wherein the functional auxiliary agent is one or more of a combination of a water-based silicone defoamer, an amine neutralizer, a silane coupling agent and a substrate wetting agent.
5. The one-component aqueous quick-drying high-gloss coating for high humidity environment according to claim 1, wherein the film forming aid is an alcohol ester film forming substance.
6. The one-part aqueous fast-drying high gloss paint for high humidity environment of claim 1, wherein the thickener is a polyurethane associative rheology aid.
7. The one-component aqueous quick-drying high-gloss paint for high-humidity environment according to claim 1, wherein the pigment is titanium dioxide; the filler is one or a combination of a plurality of mica powder, ferrotitanium powder, barium sulfate and the like.
8. The one-component water-based quick-drying high-gloss paint for the high-humidity environment as claimed in claim 1, wherein bentonite is further added in the paint, and the bentonite accounts for 2-4 parts.
9. The method for preparing the one-component water-based quick-drying high-gloss paint for the high-humidity environment according to any one of claims 1 to 8, which is characterized by comprising the following steps:
(1) putting the acrylic emulsion and the silica sol into a stirring tank I, starting stirring, controlling the stirring speed to be between 2000-3000r/min, uniformly mixing, and then adding the functional auxiliary agent into the mixture to obtain a solution I for later use;
(2) putting the pigment, the filler and the distilled water into a stirring tank II, starting stirring, controlling the stirring speed at 1000-1500r/min, uniformly stirring, and adding the functional auxiliary agent into the mixture to obtain a solution II for later use;
(3) and (3) slowly adding the solution II obtained in the step (2) into the step (1), controlling the adding flow rate to be 0.5L/min, adding bentonite and a thickening agent when the adding amount of the solution II reaches 80% of the total volume of the solution II, continuing stirring for 10min after the solution II is added, adding a film-forming aid into the solution, and uniformly mixing.
10. The method for preparing the one-component water-based quick-drying high-gloss paint for high-humidity environment according to claim 9, wherein in the step (1), the functional additives are added in an amount of 78-85% of the total amount of the functional additives.
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| CN202110280786.7A CN113025142A (en) | 2021-03-16 | 2021-03-16 | Single-component water-based quick-drying high-gloss paint for high-humidity environment and preparation method thereof |
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| CN202110280786.7A CN113025142A (en) | 2021-03-16 | 2021-03-16 | Single-component water-based quick-drying high-gloss paint for high-humidity environment and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702898A (en) * | 2012-06-29 | 2012-10-03 | 惠州市长润发涂料有限公司 | Organic-inorganic composite water-borne woodenware paint |
| CN111234627A (en) * | 2020-01-21 | 2020-06-05 | 山东七维新材料有限公司 | High-performance water-based acrylic coating |
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2021
- 2021-03-16 CN CN202110280786.7A patent/CN113025142A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702898A (en) * | 2012-06-29 | 2012-10-03 | 惠州市长润发涂料有限公司 | Organic-inorganic composite water-borne woodenware paint |
| CN111234627A (en) * | 2020-01-21 | 2020-06-05 | 山东七维新材料有限公司 | High-performance water-based acrylic coating |
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Application publication date: 20210625 |