CN115304971A - Water-based latex paint and preparation method thereof - Google Patents
Water-based latex paint and preparation method thereof Download PDFInfo
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- CN115304971A CN115304971A CN202211005951.9A CN202211005951A CN115304971A CN 115304971 A CN115304971 A CN 115304971A CN 202211005951 A CN202211005951 A CN 202211005951A CN 115304971 A CN115304971 A CN 115304971A
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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
- 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
-
- 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
- C09D5/02—Emulsion paints including aerosols
- C09D5/024—Emulsion paints including aerosols characterised by the 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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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
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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)
- Dispersion Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a water-based latex paint and a preparation method thereof, wherein the water-based latex paint comprises the following raw material components in parts by weight: 20-40 parts of emulsion, 20-38 parts of filler, 0.1-1 part of silane coupling agent, 1.4-15 parts of functional assistant and 5-20 parts of water; the emulsion is at least one of acrylic emulsion, propyl benzene emulsion and polyepoxy resin emulsion. The water-based latex paint prepared by the invention has good adhesive force, excellent water permeability, salt and alkali resistance and other performances.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a water-based latex coating and a preparation method thereof.
Background
After long-time wind, rain and rain, brick house cement walls, ceramic tile walls and the like face the problems of ceramic tile falling, wall surface cracking, collapse and the like, and in order to ensure the living safety, the houses need to be changed into old houses.
The water-based latex paint does not contain organic solvent, so that the water-based latex paint does not volatilize the organic solvent in the production and construction processes, has no pollution to the surrounding environment, has very low release amount of Volatile Organic Compounds (VOCs) in the use process, has the total amount of the VOCs within the standard allowable range, is safe, sanitary and environment-friendly green architectural decorative paint, and is suitable for old house modification.
The water-based latex paint has good air permeability and strong alkali resistance, so the paint is not easy to foam when the humidity difference between the inside and the outside of the paint is large, and the surface of the paint is not easy to generate water drops when the paint is coated on indoor walls, and the paint is particularly suitable for coating cement surfaces and plaster surfaces of the inside and the outside of buildings.
However, the existing water-based latex paint has low adhesive force on the outer wall surfaces such as ceramic tiles and the like, and particularly, the paint has serious cracking, falling and other phenomena after the substrate is soaked in water, so that the adhesive force of the paint is greatly reduced. In addition, the existing water-based exterior wall latex paint is generally a finish paint, does not have the characteristics of exterior wall primer in the old-time modification process, and has unsatisfactory water permeability, saline alkali resistance and other performances.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides a water-based latex paint and a preparation method thereof, which overcome the defect of poor adhesion of the existing water-based latex paint on the surface of an external wall of a building.
In order to solve the technical problems, the invention adopts the technical scheme that:
in a first aspect, an embodiment of the present invention provides an aqueous latex paint, including the following raw material components in parts by weight:
20-40 parts of emulsion, 20-38 parts of filler, 0.1-1 part of silane coupling agent, 1.4-15 parts of functional assistant and 5-20 parts of water;
the emulsion is at least one of acrylic emulsion, propyl benzene emulsion and polyepoxy resin emulsion.
The water-based latex paint provided by the invention has the advantages that the silane coupling agent can react with hydroxyl in an inorganic substance and can interact with long molecular chains in a polymer, so that two materials with different properties are coupled, and various performances of the paint are improved. In addition, the silane coupling agent has low viscosity and surface tension and high wetting capacity, and can be rapidly spread on the surfaces of glass, ceramics and metal so as to wet the surface of the inorganic material by the silane coupling agent. And once the silane coupling agent is spread on the surface of the inorganic material, the surface of the inorganic material is soaked, two groups on the molecule of the silane coupling agent are respectively diffused to the surfaces with similar polarities, because the surface of the inorganic material adsorbs a thin water layer, alkoxy at one end is hydrolyzed into silicon hydroxyl which is oriented to the surface of the inorganic material, and simultaneously, the silicon hydroxyl and the hydroxyl on the surface of the material are subjected to hydrolytic polycondensation reaction, organic groups are oriented to the surface of the organic material, and the organic groups are subjected to chemical reaction in the cross-linking and curing process, so that the coupling process between different types of materials is completed. Therefore, the water-based latex paint added with the silane coupling agent has stronger wettability on the surface of the substrate material, the coupling process is synchronously completed in the drying process, and the adhesive force of the paint on the substrate is improved.
Optionally, the emulsions are acrylic emulsions and styrene acrylic emulsions.
Optionally, the filler comprises a component A, a component B and a component C, and the mass ratio of the component A to the component B to the component C is (1-15): 0.8.
Optionally, the component a is rutile type titanium dioxide or anatase type titanium dioxide, the component B is talcum powder or aluminum hydroxide, and the component C is coarse whiting.
Optionally, the functional auxiliary agent comprises 0.1-1 part of defoaming agent, 0.1-2.5 parts of wetting agent, 1-5 parts of dispersing agent, 0.05-0.5 part of preservative, 0.2-5 parts of film forming auxiliary agent, 0.1-1 part of thickening agent and 0.1-1 part of pH regulator.
Optionally, the wetting agent is a silicone surfactant.
Optionally, the dispersant is at least one of a polyacrylic acid sodium salt dispersant and a polyacrylic acid ammonium salt dispersant.
Optionally, the film forming aid is at least one of melamine-formaldehyde resin, lauryl alcohol, propylene glycol methyl ether acetate and dipropylene glycol ethyl ether.
Optionally, the pH regulator auxiliary agent is at least one of ammonia water, AM-95, MA-95 and AMP-95.
In a second aspect, an embodiment of the present invention provides a method for preparing an aqueous latex paint, including the following steps:
s1: under the condition that the rotating speed is 300-1000r/min, sequentially adding water, a wetting agent, a dispersing agent and a pH regulator into a container and stirring for 5-30 minutes;
s2: adding pigment and filler, adjusting the rotating speed to 500-2500r/min, and continuously stirring for 5-60 minutes until uniformly dispersed slurry is obtained;
s3: adding the emulsion into the slurry under the condition that the stirring speed is 800-2000r/min, and stirring for 5-60 minutes to uniformly disperse the emulsion and the pigment filler;
s4: adding a defoaming agent, a preservative, a film-forming assistant, a thickening agent and a silane coupling agent, and stirring for 10-60 minutes to obtain the water-based latex paint.
The technical effects corresponding to the preparation method of the water-based latex paint provided by the second aspect refer to the related description of the water-based latex paint provided by the first aspect.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention by way of specific embodiments thereof.
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below. It should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The water-based latex paint comprises the following raw material components in parts by weight:
20-40 parts of emulsion, 20-38 parts of filler, 0.1-1 part of silane coupling agent, 0.1-1 part of defoaming agent, 0.1-2.5 parts of wetting agent, 1-5 parts of dispersing agent, 0.05-0.5 part of preservative, 0.2-5 parts of film-forming assistant, 0.1-1 part of thickening agent, 0.1-1 part of pH regulator and 5-20 parts of water; the emulsion is acrylic emulsion and styrene-acrylic emulsion; the filler comprises a component A, a component B and a component C, and the mass ratio of the component A to the component B to the component C is (1-15) to 1; wherein, the component A is rutile type titanium dioxide or anatase type titanium dioxide, the component B is talcum powder or aluminum hydroxide, and the component C is coarse whiting; preferably, the wetting agent is a silicone surfactant; the dispersing agent is obtained by compounding a polyacrylic acid sodium salt dispersing agent and a polyacrylic acid ammonium salt dispersing agent, and the ratio of the polyacrylic acid sodium salt dispersing agent to the polyacrylic acid ammonium salt dispersing agent is 1; the film-forming auxiliary agent is melamine-formaldehyde resin and dodecyl alcohol; the pH regulator assistant is ammonia water.
A preparation method of water-based latex paint comprises the following steps:
s1: under the condition that the rotating speed is 300-1000r/min, sequentially adding water, a wetting agent, a dispersing agent and a pH regulator into a container and stirring for 5-30 minutes;
s2: adding pigment and filler, adjusting the rotating speed to 500-2500r/min, and continuously stirring for 5-60 minutes until uniformly dispersed slurry is obtained;
s3: adding the emulsion into the slurry under the condition that the stirring speed is 800-2000r/min, and stirring for 5-60 minutes to uniformly disperse the emulsion and the pigment filler;
s4: adding a defoaming agent, a preservative, a film-forming assistant, a thickening agent and a silane coupling agent, and stirring for 10-60 minutes to obtain the water-based latex paint.
Example one
A preparation method of water-based latex paint comprises the following steps:
s1: under the condition that the rotating speed is 600r/min, water, a wetting agent, a dispersing agent and a pH regulator are sequentially added into a container and stirred for 20 minutes;
s2: adding pigment and filler, adjusting the rotating speed to 1500r/min, and continuously stirring for 30 minutes until uniformly dispersed slurry is obtained;
s3: adding the emulsion into the slurry under the condition that the stirring speed is 900r/min, and stirring for 30 minutes to uniformly disperse the emulsion and the pigment filler;
s4: under the condition that the stirring speed is 800r/min, adding a defoaming agent, a preservative, a film-forming assistant, a thickening agent and a silane coupling agent, and stirring for 30 minutes to obtain the water-based latex paint.
Example two
A preparation method of water-based latex paint comprises the following steps:
s1: under the condition that the rotating speed is 400r/min, sequentially adding water, a wetting agent, a dispersing agent and a pH regulator into a container and stirring for 10 minutes;
s2: adding the pigment and the filler, adjusting the rotating speed to 2000r/min, and continuously stirring for 30 minutes until uniformly dispersed slurry is obtained;
s3: adding the emulsion into the slurry under the condition that the stirring speed is 900r/min, and stirring for 30 minutes to uniformly disperse the emulsion and the pigment filler;
s4: under the condition that the stirring speed is 800r/min, adding a defoaming agent, a preservative, a film-forming assistant, a thickening agent and a silane coupling agent, and stirring for 30 minutes to obtain the water-based latex paint.
EXAMPLE III
A preparation method of water-based latex paint comprises the following steps:
s1: under the condition that the rotating speed is 600r/min, water, a wetting agent, a dispersing agent and a pH regulator are sequentially added into a container and stirred for 30 minutes;
s2: adding pigment and filler, adjusting the rotating speed to 1500r/min, and continuously stirring for 30 minutes until uniformly dispersed slurry is obtained;
s3: adding the emulsion into the slurry under the condition that the stirring speed is 1000r/min, and stirring for 20 minutes to uniformly disperse the emulsion and the pigment filler;
s4: adding a defoaming agent, a preservative, a film-forming assistant, a thickening agent and a silane coupling agent under the condition of stirring speed of 900r/min, and stirring for 20 minutes to obtain the water-based latex paint.
Example four
A preparation method of water-based latex paint comprises the following steps:
s1: under the condition that the rotating speed is 300r/min, water, a wetting agent, a dispersing agent and a pH regulator are sequentially added into a container and stirred for 30 minutes;
s2: adding the pigment and the filler, regulating the rotating speed to 900r/min, and continuously stirring for 30 minutes until uniformly dispersed slurry is obtained;
s3: adding the emulsion into the slurry under the condition that the stirring speed is 900r/min, and stirring for 30 minutes to uniformly disperse the emulsion and the pigment and filler;
s4: adding a defoaming agent, a preservative, a film-forming assistant, a thickening agent and a silane coupling agent under the condition of stirring speed of 800r/min, and stirring for 30 minutes to obtain the water-based latex paint.
EXAMPLE five
A preparation method of water-based latex paint comprises the following steps:
s1: under the condition that the rotating speed is 800r/min, water, a wetting agent, a dispersing agent and a pH regulator are sequentially added into a container and stirred for 20 minutes;
s2: adding pigment and filler, adjusting the rotating speed to 2000r/min, and continuously stirring for 30 minutes until uniformly dispersed slurry is obtained;
s3: adding the emulsion into the slurry under the condition that the stirring speed is 800r/min, and stirring for 30 minutes to uniformly disperse the emulsion and the pigment filler;
s4: adding a defoaming agent, a preservative, a film-forming assistant, a thickening agent and a silane coupling agent under the condition of stirring speed of 800r/min, and stirring for 30 minutes to obtain the water-based latex paint.
The raw material components in the above examples one to five and comparative examples one and two are referred to in table 1, and the preparation methods of comparative examples one and two are referred to in example one.
The aqueous latex paints prepared in examples one-fifth and comparative examples one and two were subjected to performance tests, and the test results are reported in table 2.
TABLE 1
TABLE 2
As can be seen from Table 2, the water-based latex paint prepared by the invention has better dry and wet adhesion, saltpetering and alkalinity resistance, water and alkali resistance and water permeability. Comparing the first embodiment with the first comparative example, the adhesion of the coating with the silane coupling agent is better than that of the coating without the silane coupling agent, and the coating with the silane coupling agent has great superiority in wet adhesion, so that the adhesion of the coating can be improved by adding the silane coupling agent; the first and second examples can be seen by comparing the two emulsions, which is beneficial to improving the salt-overtime resistance of the coating; as can be seen from the comparison of the third example and the second comparative example, the water resistance and the alkali resistance of the added bentonite are obviously better than those of the organic thickening agent.
According to the invention, the water-based latex paint and the preparation method thereof are adopted, the silane coupling agent is added, and the silane coupling agent enhances the wettability between the paint and a substrate material, so that the paint can be better spread on the surface of the substrate, and the adhesion on the substrate is improved while the coupling process is completed in the drying process; the salt and alkali resistance and the water permeability of the coating are improved by adopting a compounding mode of acrylic emulsion and styrene-acrylic emulsion, so that the coating has the characteristic of combining the bottom surface of the external wall latex paint; bentonite is added as a thickening agent, so that the water resistance of the paint can be improved, and the workability can be improved; the water-based latex paint is suitable for house old house improvement, does not fall off on substrates such as cement, ceramic tiles and the like, and can still maintain excellent adhesive force under the conditions of moist substrates and water soaking.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The water-based latex paint is characterized by comprising the following raw material components in parts by weight:
20-40 parts of emulsion, 20-38 parts of filler, 0.1-1 part of silane coupling agent, 1.4-15 parts of functional assistant and 5-20 parts of water;
the emulsion is at least one of acrylic emulsion, propyl benzene emulsion and polyepoxy resin emulsion.
2. The aqueous latex paint according to claim 1, wherein said emulsion is acrylic emulsion or styrene-acrylic emulsion.
3. The aqueous latex paint according to claim 1, wherein the filler comprises a component A, a component B and a component C, and the mass ratio of the component A to the component B to the component C is (1-15) to 1.
4. The aqueous latex paint according to claim 3, wherein said component A is rutile type titanium dioxide or anatase type titanium dioxide, said component B is talc or aluminum hydroxide, and said component C is heavy calcium.
5. The aqueous latex paint according to claim 1, wherein the functional additive comprises 0.1-1 part of defoaming agent, 0.1-2.5 parts of wetting agent, 1-5 parts of dispersing agent, 0.05-0.5 part of preservative, 0.2-5 parts of film forming additive, 0.1-1 part of thickener and 0.1-1 part of pH regulator.
6. The aqueous latex coating according to claim 1, wherein said wetting agent is a silicone surfactant.
7. The aqueous latex paint according to claim 1, wherein said dispersant is at least one of a polyacrylic acid sodium salt dispersant and a polyacrylic acid ammonium salt dispersant.
8. The aqueous latex coating of claim 1, wherein said coalescent is at least one of melamine-formaldehyde resin, lauryl alcohol, propylene glycol methyl ether acetate, and dipropylene glycol ethyl ether.
9. The aqueous latex paint of claim 1, wherein said pH modifier additive is at least one of ammonia, AM-95, MA-95, and AMP-95.
10. A method for producing the aqueous latex paint according to any one of claims 1 to 9, characterized by comprising the steps of:
s1: under the condition that the rotating speed is 300-1000r/min, water, a wetting agent, a dispersing agent and a pH regulator are sequentially added into a container and stirred for 5-30 minutes;
s2: adding pigment and filler, adjusting the rotating speed to 500-2500r/min, and continuously stirring for 5-60 minutes until uniformly dispersed slurry is obtained;
s3: adding the emulsion into the slurry under the condition that the stirring speed is 800-2000r/min, and stirring for 5-60 minutes to uniformly disperse the emulsion and the pigment filler;
s4: adding a defoaming agent, a preservative, a film-forming assistant, a thickening agent and a silane coupling agent, and stirring for 10-60 minutes to obtain the water-based latex paint.
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| CN202211005951.9A CN115304971A (en) | 2022-08-22 | 2022-08-22 | Water-based latex paint and preparation method thereof |
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| CN202211005951.9A CN115304971A (en) | 2022-08-22 | 2022-08-22 | Water-based latex paint and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106189581A (en) * | 2016-07-12 | 2016-12-07 | 深圳市华科源新型材料研究开发实业有限公司 | A kind of aqueous inner wall paint and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106189581A (en) * | 2016-07-12 | 2016-12-07 | 深圳市华科源新型材料研究开发实业有限公司 | A kind of aqueous inner wall paint and preparation method thereof |
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