CN115558343A - Low-water-permeability breathable water-based paint and preparation method thereof - Google Patents
Low-water-permeability breathable water-based paint and preparation method thereof Download PDFInfo
- Publication number
- CN115558343A CN115558343A CN202211173911.5A CN202211173911A CN115558343A CN 115558343 A CN115558343 A CN 115558343A CN 202211173911 A CN202211173911 A CN 202211173911A CN 115558343 A CN115558343 A CN 115558343A
- Authority
- CN
- China
- Prior art keywords
- water
- based paint
- agent
- dispersing
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- 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
-
- 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
- C09D143/00—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 containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
-
- 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
- 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
- C09D7/65—Additives macromolecular
-
- 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
- C09D7/80—Processes for incorporating ingredients
-
- 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
Abstract
The invention relates to the technical field of coatings, in particular to a low-water-permeability breathable water-based coating and a preparation method thereof. The water-based paint comprises the following raw materials: the water-based acrylic resin emulsion comprises water-based acrylic resin emulsion, cellulose ether, water, a thickening agent, a dispersing agent, a wetting agent, a defoaming agent, an antifreezing solution, a film-forming aid, a multifunctional aid, a bactericide, beta-cyclodextrin and inorganic pigments and fillers. The preparation method of the water-based paint comprises the following steps: mixing water, cellulose ether, a dispersing agent, a wetting agent, a defoaming agent and an antifreezing solution; then adding beta-cyclodextrin, and stirring uniformly at low speed; adding inorganic pigment and filler, dispersing at high speed and stirring uniformly; adding the multifunctional additive, the film forming additive and the defoaming agent, and uniformly stirring at a low speed; adding the aqueous acrylic resin emulsion, the bactericide and the thickening agent, and uniformly stirring at a low speed to obtain the water-based acrylic resin emulsion. The water-based paint coating has low water permeability and high air permeability, can be used for protecting an outer wall, can avoid the problems of bubbling, falling off, wall body mildew and the like, and prolongs the service life of the wall body.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a low-water-permeability breathable water-based coating and a preparation method thereof.
Background
In recent years, with the rapid development of socioeconomic performance in China, the living standard of people is continuously improved, and the problems of living environment are more and more concerned. The exterior wall building coating is an environment-friendly decorative material convenient to construct, can prolong the service life of an exterior wall, and plays a certain role in protecting the exterior wall of a building, thereby improving the living environment. Such a coating is often applied on the surface of an alkaline base material such as concrete or mortar, and is easily affected by moisture, dust, and ultraviolet rays in the environment, so that the performance requirements are high, and the coating is often required to have low water permeability, stain resistance, water resistance, alkali resistance, and the like.
The water permeability of the exterior wall coating layer can influence the aging resistance of the coating decorative layer, a series of destructive effects can be generated after moisture enters the coating, not only can physical destructive effects such as swelling, foaming, leaching of components, adhesion loss and the like of the coating be caused, but also when the moisture reaches the interface of the coating and a substrate, the moisture can be acted with oxygen and the like to generate corrosion under the film. The water permeability of the coating is increased, which can cause the protective function of the coating on the wall to be reduced and influence the service life of the wall.
In the prior art, low water permeability is usually realized through compactness of a formed film, but the wall body has moisture reflected from the inside, and if the coating has no good air permeability, water vapor and the like cannot penetrate through the coating to exchange with the outside. When moisture builds up inside the wall or at the coating interface, stresses can develop that cause the coating to bubble, peel, and even mildew or damage the wall layer.
Thus, the coating combines good low water permeability with high air permeability, and is critical to maintaining the "breathing" and normal condition of the wall.
Disclosure of Invention
Aiming at the technical problems, the invention provides a low-water-permeability breathable water-based paint and a preparation method thereof. The water-based paint has low water permeability, high air permeability and excellent film-forming property, can protect a wall body from being corroded by water in the environment, can ensure that water vapor in the wall body is exchanged into the external environment, better protects the wall body, prolongs the service life of the wall body, and has good water resistance, alkali resistance, water permeability and saltpetering alkali resistance.
In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a low water permeability air-permeable water-based paint, which includes the following raw materials in parts by weight:
the water-based paint with low water permeability and high air permeability provided by the invention uses beta-cyclodextrin as one of film-forming framework substances. Beta-cyclodextrin (beta-CD) is a macrocyclic compound formed by connecting D-glucopyranose units into a ring in the first position. No toxicity, and the structure is shown as formula (1) and formula (2):
as can be seen from the formulae (1) and (2), the β -cyclodextrin molecule has a tapered hollow cylindrical three-dimensional ring structure in which the secondary hydroxyl groups of C2 and C3 in β -cyclodextrin are poorly active and do not react with aqueous acrylic acid; the primary hydroxyl on C6 has high activity and hydrophilicity, and can react with the water-based acrylic resin to form a hydrogen bond. The hydrogen bonding effect of the beta-cyclodextrin and the waterborne acrylic resin emulsion molecule is shown as the formula (3):
from the formula (3), it is known that the primary hydroxyl group of β -cyclodextrin forms an intermolecular hydrogen bond with the carboxyl group of the aqueous acrylic resin emulsion.
Under the action of hydrogen bonds, the beta-cyclodextrin and the water-based acrylic resin emulsion are stably combined under a specific dosage, the hydrogen bonds are further enhanced in the process of drying the coating into a coating, so that the beta-cyclodextrin forms a large number of micro-pore structures in the coating, the micro-pore structures are stably embedded on the acrylic resin film and stably exist in the coating under the support of a framework of the inorganic pigment and filler, and gaseous water generated in the wall is exchanged into the external environment through the micro-pores due to the existence of the micro-pore structures, so that the coating cannot obstruct the gas exchange between the wall and the outside, and the coating is ensured to have high air permeability.
In a cavity formed by the hollow cylinder of the beta-cyclodextrin, a hydrophobic area is formed due to the shielding effect of a C-H bond, the hydrophobic area has a hydrophobic effect, and van der Waals force and hydrogen bonds between the hydrophobic area and liquid water molecules in the external environment are mutually repelled, so that the beta-cyclodextrin can prevent the liquid water molecules in the external environment from penetrating through the coating, and the coating has low water permeability. And the hydrophobic effect of the inner cavity of the beta-cyclodextrin ensures that beta-cyclodextrin molecules have the performance of no moisture absorption, and is favorable for ensuring that the coating has good effect of protecting the outer wall matrix.
It should be noted that, the water in the external environment is liquid water, the intermolecular hydrogen bond and van der waals force of the water are significant, and the liquid water is prevented from being outside the coating layer because the liquid water is subjected to hydrophobic repulsion in the hollow cylindrical cavity of the beta-cyclodextrin and cannot penetrate through the hollow cylindrical cavity of the beta-cyclodextrin. The water generated in the wall body is water vapor, intermolecular hydrogen bonds and van der waals force action are not obvious, and water molecules can penetrate through the hollow cylindrical cavity of the beta-cyclodextrin. I.e. the cavity of the beta-cyclodextrin is permeable to gaseous water and impermeable to liquid water.
Therefore, the water-based paint prepared from the beta-cyclodextrin, the water-based acrylic resin emulsion and various auxiliary materials has low water permeability and high air permeability, and a coating formed by coating the water-based paint on the outer wall can prevent water in the external environment from permeating, protect the wall from being corroded by water in the environment and achieve the purpose of protecting the outer wall; meanwhile, the coating has good air permeability, so that water vapor generated by the wall can well penetrate through the coating to be exchanged with the external environment, the accumulation of the water vapor in the wall or at the interface of the coating is avoided, the problems of bubbling, falling, wall mildew and the like of the coating are avoided, and the service life of the wall is prolonged.
In addition, due to the unique molecular structure of the beta-cyclodextrin, the hydrophobic binding site of the beta-cyclodextrin, as a Host, can envelop various appropriate objects Guest, such as organic molecules, inorganic ions, gas molecules and the like, can endow the coating with excellent adsorption capacity, and can adsorb harmful substances in the environment.
The film forming assistant, the dispersant, the wetting agent, the defoamer, the antifreeze, the cellulose ether, the bactericide, the multifunctional assistant and the like are used as the assistant of the water-based paint, and the film forming performance and the storage stability of the coating are improved through the synergistic effect of the film forming assistant, the dispersant, the wetting agent, the defoamer, the antifreeze, the cellulose ether, the bactericide and the multifunctional assistant in the mass ratio, and the formation of beta-cyclodextrin microporous structures is facilitated. The water-based acrylic resin emulsion, the beta-cyclodextrin and various auxiliary materials are combined within the dosage range, and the coating has good water resistance, alkali resistance, low water permeability, air permeability, saltpetering resistance and excellent film forming property through the synergistic effect of various raw materials, so that the quality of a coating finished product and a coating is improved.
Preferably, the aqueous acrylic resin emulsion is at least one of styrene-acrylic emulsion, vinyl alcohol-acrylic emulsion and silicone-acrylic emulsion.
In the embodiment of the invention, the preferable water-based acrylic resin emulsion is used as a film forming substance in the water-based paint, so that the coating of the water-based paint has good adhesive force and excellent film forming performance, and the service life of the coating is prolonged.
Preferably, the thickener is at least one of polyacrylate and polyurethane.
In the embodiment of the invention, the preferable thickening agent can ensure that the water-based paint has certain viscosity and can prevent sedimentation in the storage process; the cellulose ether is used together, so that the stability of the water-based paint can be improved, the uniformity of the beta-cyclodextrin in the water-based paint is ensured, and the possibility of layering of the water-based paint is reduced.
Preferably, the dispersant is at least one of an ammonium salt of a polycarboxylic acid and a sodium salt of a polycarboxylic acid; the wetting agent is at least one of thiol compounds, hydrazide compounds and sulfonated oil compounds.
In the embodiment of the invention, the preferable dispersing agent and wetting agent can ensure the full dispersion of the inorganic pigment and filler in the dispersion process, improve the fineness of the inorganic pigment and filler in the water-based paint, and are more beneficial to the uniformity and consistency of the inorganic pigment and filler skeleton in film forming.
Preferably, the antifreeze is at least one of ethylene glycol and propylene glycol.
In the embodiment of the invention, the preferable antifreeze can not only prevent the water-based paint from freezing at low temperature, but also improve the dispersion and dissolution states of the water-based acrylic resin emulsion in the water-based paint, and is beneficial to forming a uniform coating in the subsequent film forming process.
Preferably, the coalescing agent is at least one of a dodecyl alcohol ester, ethylene glycol monobutyl ether, and propylene glycol monobutyl ether.
In the embodiment of the invention, the preferable film-forming assistant can reduce the film-forming temperature and the glass transition temperature of the latex particles in the aqueous acrylic resin emulsion, ensure that the latex particles can deform and fuse with each other at normal temperature and normal pressure, and can enable the latex particles to have larger free volume for latex molecules to move due to the reduction of the glass transition temperature of the latex particles, so that the latex molecules of the aqueous acrylic resin emulsion are more favorably contacted with beta-cyclodextrin molecules to form hydrogen bond interaction in the film-forming process, and the formation of micropores in a coating is promoted.
Preferably, the multifunctional assistant is at least one of organic amine and ammonia water.
Preferably, the bactericide is at least one of cason and formaldehyde-releasing species.
In the embodiment of the invention, the preferable bactericide can prolong the storage time of the water-based paint and ensure that the paint does not have viscosity reduction caused by prolonging the storage time.
Preferably, the inorganic pigment and filler is at least one of heavy calcium powder, talcum powder, calcined kaolin and titanium dioxide.
The preferred inorganic pigment and filler in the embodiment of the invention plays a skeleton role in the water-based paint, effectively improves the toughness and strength of a paint film and plays a role in covering. The skeleton action can further improve the formation of the microporous structure of the beta-cyclodextrin and the existence of the stable microporous structure, further ensure that the beta-cyclodextrin and the aqueous acrylic resin emulsion fully form hydrogen bond action in the gap of the inorganic pigment and filler skeleton, promote the formation of the microporous structure, and improve the stability of the microporous structure in a coating due to the rigid action of the inorganic pigment and filler skeleton.
In a second aspect, an embodiment of the present invention provides a method for preparing the above breathable water-based paint, which at least includes the following steps:
step a, mixing the water, the cellulose ether, the dispersing agent, the wetting agent, the antifreezing solution and 0.15-0.25 part of the defoaming agent, and dispersing and stirring the mixture to be in a viscous state at 300-500 r/min;
b, adding the beta-cyclodextrin into the mixture obtained in the step a, and uniformly dispersing and stirring at 500-800 r/min;
c, adding the inorganic pigment and filler, and dispersing and stirring the mixture to be uniform at 1000-1500 r/min;
d, adding the multifunctional additive, the film-forming additive and the rest of the defoaming agent, and dispersing and stirring uniformly at 500-800 r/min;
and e, adding the aqueous acrylic resin emulsion, the bactericide and the thickening agent, and dispersing and stirring uniformly at 300-500r/min to obtain the water-based acrylic resin emulsion.
In the embodiment of the invention, the preparation method comprises the steps of mixing water, cellulose ether, a dispersing agent, a wetting agent, half of the amount of the defoaming agent, an antifreezing solution and the like in advance, uniformly stirring at a low speed, adding beta-cyclodextrin, uniformly stirring at a low speed, adding an inorganic pigment and filler, dispersing and stirring at a high speed to a uniform state, so that the water can fully wet the inorganic pigment and filler, prevent the filler from agglomerating and achieve a better dispersion effect, adding a multifunctional auxiliary agent, a film-forming auxiliary agent and the other half of the amount of the defoaming agent, uniformly stirring at a low speed, ensuring that all auxiliary materials are fully dispersed, and achieving a better fineness requirement of the coating; finally, the aqueous acrylic resin emulsion, the bactericide and the thickener are added and uniformly stirred at a low speed, and the emulsion breaking of the emulsion due to high-speed dispersion can be avoided under the low-speed stirring of the aqueous acrylic resin emulsion, so that the stability of the coating is improved; in addition, the defoaming agent is added in two times, the defoaming agent with half of the formula amount is added firstly to inhibit the generation of bubbles in the coating, and before the aqueous acrylic resin emulsion is added, the defoaming agent with the other half of the formula amount is added again to be stirred at low speed, so that the bubbles generated in the coating can be eliminated in time, the uniformity and stability of the coating are improved, and the subsequent coating is ensured to be coated into a uniform and complete coating.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific 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.
The traditional water-based paint has the problems of low water permeability, low air permeability and the like, when the water-based paint is coated on an outer wall to form a compact coating under the alkaline action of matrixes such as concrete, mortar and the like, the low air permeability can block the exchange between the wall and the outside air, so that the quality problems of poor stain resistance, saltpetering, poor water resistance, fading and the like of the paint occur. Aiming at the technical problem, the invention provides a low-water-permeability air-permeable water-based paint and a preparation method thereof, wherein the air-permeable water-based paint comprises the following raw materials in parts by weight:
the preparation method specifically comprises the following operations:
step a, mixing the water, the cellulose ether, the dispersing agent, the wetting agent, the antifreezing solution and 0.15-0.25 part of the defoaming agent, and dispersing and stirring the mixture to be in a viscous state at 300-500 r/min;
b, adding the beta-cyclodextrin into the mixture obtained in the step a, and dispersing and stirring uniformly at 500-800 r/min;
c, adding the inorganic pigment and filler, and dispersing and stirring the mixture to be in a uniform state at 1000-1500 r/min;
d, adding the multifunctional auxiliary agent, the film-forming auxiliary agent and the residual defoaming agent in the formula amount, and dispersing and stirring uniformly at 500-800 r/min;
and e, adding the aqueous acrylic resin emulsion, the bactericide and the thickening agent, and dispersing and stirring uniformly at 300-500r/min to obtain the water-based acrylic resin emulsion.
The technical solution of the present invention is further illustrated by the following specific examples.
Example 1
Under normal temperature and normal pressure, at the rotating speed of 400r/min, 23.35 parts of water, 0.25 part of cellulose ether, 0.7 part of dispersing agent, 0.2 part of wetting agent and 0.15 part of defoaming agent are mixed, stirred and dispersed for 5-10min, 1 part of beta-cyclodextrin is added after the mixture is dispersed to be in a viscous state, the speed is increased to 600r/min, stirred and dispersed for 5-10min, 40 parts of inorganic pigment and filler (20 parts of heavy calcium, 15 parts of titanium dioxide and 5 parts of calcined kaolin) are added after the mixture is uniformly mixed, the mixture is dispersed at a high speed of 1200r/min for 20-25min to be in a uniform state, the rotating speed is reduced to 600r/min, 0.15 part of multifunctional auxiliary agent AMP-95,1.2 part of film-forming auxiliary agent, 1.3 parts of antifreeze solution ethylene glycol and 0.15 part of defoaming agent are added, stirred and dispersed for 5min, the rotating speed is reduced to 400r/min, 28 parts of waterborne acrylic resin emulsion is added, 0.2 part of bactericide and 0.35 part of alkali association type acrylic ester thickening agent are added, and the mixture is stirred and mixed to be in a uniform state, and the mixture is obtained.
Example 2
Under normal temperature and normal pressure, under the rotation speed of 400r/min, 23.35 parts of water, 0.25 part of cellulose ether, 0.7 part of dispersing agent, 0.2 part of wetting agent and 0.15 part of defoaming agent are mixed, stirred and dispersed for 5-10min, 1.5 parts of beta-cyclodextrin is added after the mixture is dispersed to be in a viscous state, after the speed is increased to 600r/min, stirred and dispersed for 5-10min, 40 parts of inorganic pigment and filler (20 parts of heavy calcium, 15 parts of antifreezing solution ethylene glycol and 5 parts of calcined kaolin) are added after the mixture is uniformly mixed, the mixture is dispersed at a high speed of 1200r/min for 20-25min to be in a uniform state, the rotation speed is reduced to 600r/min, 0.15 part of multifunctional additive AMP-95,1.2 parts of film-forming additive, 1.3 parts of antifreezing solution ethylene glycol and 0.15 part of defoaming agent are added, stirred and dispersed for 5min, the rotation speed is reduced to 400r/min, 28 parts of waterborne acrylic resin emulsion is added, 0.2 parts of bactericide and 0.35 parts of alkali association type acrylic ester thickening agent are stirred and mixed to be in a uniform state, and the mixture is obtained.
Example 3
Under normal temperature and normal pressure, at the rotating speed of 400r/min, 21.75 parts of water, 0.25 part of cellulose ether, 0.75 part of dispersing agent, 0.2 part of wetting agent and 0.15 part of defoaming agent are mixed, stirred and dispersed for 5-10min, 2 parts of beta-cyclodextrin are added after the mixture is dispersed to be in a viscous state, the speed is increased to 600r/min, stirred and dispersed for 5-10min, 41 parts of inorganic pigment and filler (21 parts of heavy calcium, 15 parts of titanium dioxide and 5 parts of calcined kaolin) are added after the mixture is uniformly mixed, the mixture is dispersed at a high speed of 1200r/min for 20-25min to be in a uniform state, the rotating speed is reduced to 600r/min, 0.15 part of multifunctional additive AMP-95,1.2 parts of film-forming additive, 1.3 parts of antifreeze solution ethylene glycol and 0.15 part of defoaming agent are added, stirred and dispersed for 5min, the rotating speed is reduced to 400r/min, 28 parts of aqueous acrylic resin emulsion is added, 0.2 parts of bactericide and 0.35 parts of alkali association type acrylate thickener are added, and the mixture is stirred and mixed for 10min to be in a uniform state, and the mixture is obtained.
Example 4
Under normal temperature and normal pressure, at the rotating speed of 400r/min, 23.15 parts of water, 0.25 part of cellulose ether, 0.75 part of dispersing agent, 0.2 part of wetting agent and 0.15 part of defoaming agent are mixed, stirred and dispersed for 5-10min, 3 parts of beta-cyclodextrin is added after the mixture is dispersed to be in a viscous state, the speed is increased to 600r/min, stirred and dispersed for 5-10min, after the mixture is uniformly mixed, 43 parts of inorganic pigment and filler (23 parts of heavy calcium, 15 parts of antifreezing solution ethylene glycol and 5 parts of calcined kaolin) are added, the mixture is highly dispersed for 20-25min at 1200r/min to be in a uniform state, the rotating speed is reduced to 600r/min, 0.15 part of multifunctional auxiliary agent AMP-95,1.2 part of film-forming auxiliary agent, 1.3 parts of antifreezing solution ethylene glycol and 0.15 part of defoaming agent are added, stirred and dispersed for 5min, the rotating speed is reduced to 400r/min, 28 parts of water-based acrylic resin emulsion, 0.2 part of bactericide and 0.35 part of alkali association type acrylic ester thickening agent are added, and the mixture is stirred and mixed to be in a uniform state, and the mixture is obtained.
Example 5
The difference from example 2 is that the emulsion ratio was adjusted to 25 parts.
Under normal temperature and normal pressure, at the rotating speed of 400r/min, 21.35 parts of water, 0.25 part of cellulose ether, 0.7 part of dispersing agent, 0.2 part of wetting agent and 0.15 part of defoaming agent are mixed, stirred and dispersed for 5-10min, after the mixture is dispersed to be in a viscous state, 1.5 parts of beta-cyclodextrin is added, after the speed is increased to 600r/min, stirred and dispersed for 5-10min, after the mixture is uniformly mixed, 40 parts of inorganic pigment and filler (20 parts of triple superphosphate, 15 parts of titanium dioxide and 5 parts of calcined kaolin) are added, at the speed of 1200r/min, the mixture is dispersed at a high speed of 20-25min to be in a uniform state, the rotating speed is reduced to 600r/min, 0.15 part of multifunctional additive AMP-95,1.2 part of film-forming additive, 1.3 parts of antifreeze solution ethylene glycol and 0.15 part of defoaming agent are added, the mixture is stirred and dispersed for 5min, the rotating speed is reduced to 400r/min, 32 parts of aqueous acrylic resin emulsion is added, 0.2 parts of bactericide and 0.35 parts of alkali association type acrylate thickener are added, and the mixture is stirred and mixed to be in a uniform state, and the mixture is obtained.
Example 6
The difference from example 2 is that the emulsion ratio was adjusted to 30 parts and the powder ratio to 38 parts.
Under normal temperature and normal pressure, at the rotating speed of 400r/min, 21.35 parts of water, 0.25 part of cellulose ether, 0.7 part of dispersing agent, 0.2 part of wetting agent and 0.15 part of defoaming agent are mixed, stirred and dispersed for 5-10min, after the mixture is dispersed to be in a viscous state, 1.5 parts of beta-cyclodextrin is added, after the speed is increased to 600r/min, stirred and dispersed for 5-10min, after the mixture is uniformly mixed, 38 parts of inorganic pigment and filler (18 parts of triple superphosphate, 15 parts of titanium dioxide and 5 parts of calcined kaolin) are added, at the speed of 1200r/min, the mixture is dispersed at a high speed of 20-25min to be in a uniform state, the rotating speed is reduced to 600r/min, 0.15 part of multifunctional additive AMP-95,1.2 part of film-forming additive, 1.3 parts of antifreeze solution ethylene glycol and 0.15 part of defoaming agent are added, the mixture is stirred and dispersed for 5min, the rotating speed is reduced to 400r/min, 35 parts of aqueous acrylic resin emulsion is added, 0.2 parts of bactericide and 0.35 parts of alkali association type acrylate thickener is added, and the mixture is stirred and mixed to be in a uniform state, and the mixture is obtained.
Comparative example 1
The difference from example 1 is that no beta-cyclodextrin was added.
Under normal temperature and normal pressure, under the rotation speed of 400r/min, 23.35 parts of water, 0.25 part of cellulose ether, 0.7 part of dispersing agent, 0.2 part of wetting agent and 0.15 part of defoaming agent are mixed, stirred and dispersed for 5-10min, after the mixture is dispersed to be in a viscous state, the speed is increased to 600r/min, the mixture is stirred and dispersed for 5-10min, 40 parts of inorganic pigment and filler (20 parts of heavy calcium carbonate, 15 parts of titanium dioxide and 5 parts of calcined kaolin) are added after being uniformly mixed, the mixture is dispersed at high speed for 20-25min under 1200r/min to be in a uniform state, the rotation speed is reduced to 600r/min, 0.15 part of multifunctional additive AMP-95,1.2 parts of film-forming additive, 1.3 parts of antifreeze ethylene glycol and 0.15 part of defoaming agent are added, the mixture is stirred and dispersed for 5min, the rotation speed is reduced to 400r/min, 28 parts of waterborne acrylic resin emulsion is added, 0.2 part of bactericide and 0.35 part of alkali association type acrylic ester thickening agent are added, and the mixture is stirred and mixed for 10min to be in a uniform state, and the mixture is obtained.
Comparative example 2
The difference from example 5 is that no beta-cyclodextrin was added.
Mixing 21.35 parts of water, 0.25 part of cellulose ether, 0.7 part of dispersing agent, 0.2 part of wetting agent and 0.15 part of defoaming agent at the rotation speed of 400r/min at normal temperature and normal pressure, stirring and dispersing for 5-10min, dispersing to a viscous state, increasing the speed to 600r/min, stirring and dispersing for 5-10min, uniformly mixing, adding 40 parts of inorganic pigment and filler (20 parts of heavy calcium, 15 parts of titanium dioxide and 5 parts of calcined kaolin), dispersing at a high speed of 1200r/min for 20-25min to a uniform state, reducing the rotation speed to 600r/min, adding 0.15 part of multifunctional additive AMP-95,1.2 part of film-forming additive, 1.3 parts of antifreeze solution ethylene glycol and 0.15 part of defoaming agent, stirring and dispersing for 5min, reducing the rotation speed to 400r/min, adding 32 parts of aqueous acrylic resin emulsion, adding 0.2 part of bactericide and 0.35 part of alkali association type acrylate thickener, stirring and mixing for 10min to a uniform state to obtain the water-based acrylic resin emulsion.
Comparative example 3
The difference from example 6 is that no beta-cyclodextrin was added.
Mixing 21.35 parts of water, 0.25 part of cellulose ether, 0.7 part of dispersing agent, 0.2 part of wetting agent and 0.15 part of defoaming agent at the rotation speed of 400r/min at normal temperature and normal pressure, stirring and dispersing for 5-10min, increasing the speed to 600r/min after dispersing to be in a viscous state, stirring and dispersing for 5-10min, adding 38 parts of inorganic pigment and filler (18 parts of heavy calcium, 15 parts of titanium dioxide and 5 parts of calcined kaolin) after uniformly mixing, dispersing at the high speed of 1200r/min for 20-25min to be in a uniform state, reducing the rotation speed to 600r/min, adding 0.15 part of multifunctional additive AMP-95,1.2 part of film-forming additive, 1.3 parts of antifreeze solution ethylene glycol and 0.15 part of defoaming agent, stirring and dispersing for 5min, reducing the rotation speed to 400r/min, adding 35 parts of aqueous acrylic resin emulsion, adding 0.2 part of bactericide and 0.35 part of alkali association type acrylate thickener, stirring and mixing for 10min to be in a uniform state.
Verification example 1
Examples 1 to 6 and comparative examples 1 to 3 were subjected to water resistance, alkali resistance, water permeability and air permeability tests, and the results are shown in Table 1.
TABLE 1 Performance testing of examples 1-6 and comparative examples 1-3
As is apparent from Table 1, the water-based paints obtained in examples 1 to 6 were free from any abnormality in water resistance and alkali resistance, and significantly improved in water permeability and water vapor permeability, as compared with the water-based paints of comparative examples 1 to 3, to which no β -cyclodextrin was added; further, examples 1,5. 6 the water permeability of the water paint prepared is better than that of the comparative examples 1-3, and the water permeability is improved by more than 45 percent, which shows that the water paint added with the beta-cyclodextrin has better water permeability compared with the water paint without the beta-cyclodextrin under the same emulsion adding proportion. Further, the water-based coating materials obtained in examples 1, 5 and 6 each had a water vapor transmission rate of 29.0 g/(m) 2 *d)、28.9g/(m 2 *d)、27.7g/(m 2 * d) The water vapor transmission rates of the aqueous coating materials prepared in comparative examples 1 to 3 were 18.8 g/(m) 2 *d)、17.9g/(m 2 *d)、17.2g/(m 2 * d) In examples 1, 5 and 6, the air permeability of the water-based paint prepared in comparative examples 1 to 3 was improved by 35% or more, which indicates that the water-based paint added with beta-cyclodextrin has higher air permeability than the water-based paint without beta-cyclodextrin at the same emulsion addition ratio. Therefore, after the beta-cyclodextrin is added, the water permeability of the water-based paint is obviously improved, and meanwhile, the air permeability is also improved.
In conclusion, the coating obtained by the water-based paint disclosed by the invention has better low water permeability and high air permeability, and the coating formed by coating the coating on the outer wall can better prevent water in the external environment from permeating, protect the wall from being corroded by water in the environment and realize the purpose of protecting the outer wall; meanwhile, the coating has good air permeability, so that water vapor generated by the wall can well penetrate through the coating to be exchanged with the external environment, the accumulation of the water vapor in the wall or at the interface of the coating is avoided, the problems of bubbling, falling, wall mildew and the like of the coating are avoided, and the service life of the wall is prolonged.
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 low-water-permeability breathable water-based paint is characterized by comprising the following raw materials in parts by weight:
2. the breathable water-based paint according to claim 1, wherein the water-based acrylic resin emulsion is at least one of styrene-acrylic emulsion, acrylic emulsion and silicone-acrylic emulsion.
3. The breathable water-based paint according to claim 1, wherein the thickener is at least one of polyacrylate and polyurethane.
4. The air-permeable water-based paint according to claim 1, wherein the dispersant is at least one of an ammonium salt of a polycarboxylic acid and a sodium salt of a polycarboxylic acid; and/or
The wetting agent is at least one of thiol compounds, hydrazide compounds and sulfonated oil compounds.
5. The air-permeable water-based paint according to claim 1, wherein the antifreeze solution is at least one of ethylene glycol and propylene glycol.
6. The breathable water-based paint according to claim 1, wherein the film-forming aid is at least one of a dodecyl alcohol ester, ethylene glycol monobutyl ether, and propylene glycol monobutyl ether.
7. The breathable water-based paint according to claim 1, wherein the multifunctional assistant is at least one of an organic amine and ammonia.
8. The breathable water-based paint according to claim 1, wherein the bactericide is at least one of cason and formaldehyde-releasing agent.
9. The air-permeable water-based paint according to claim 1, wherein the inorganic pigment and filler is at least one of heavy calcium powder, talcum powder, calcined kaolin and titanium dioxide.
10. A method for preparing the breathable water-based paint according to any one of claims 1 to 9, characterized by comprising at least the following steps:
step a, mixing the water, the cellulose ether, the dispersing agent, the wetting agent, the antifreezing solution and 0.15-0.25 part of the defoaming agent, and dispersing and stirring the mixture to be in a viscous state at 300-500 r/min;
b, adding the beta-cyclodextrin into the mixture obtained in the step a, and uniformly dispersing and stirring at 500-800 r/min;
c, adding the inorganic pigment and filler, and dispersing and stirring the mixture to be in a uniform state at 1000-1500 r/min;
d, adding the multifunctional auxiliary agent, the film-forming auxiliary agent and the rest of the defoaming agent, and dispersing and stirring uniformly at 500-800 r/min;
and e, adding the aqueous acrylic resin emulsion, the bactericide and the thickening agent, and dispersing and stirring uniformly at 300-500r/min to obtain the water-based acrylic resin emulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211173911.5A CN115558343A (en) | 2022-09-26 | 2022-09-26 | Low-water-permeability breathable water-based paint and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211173911.5A CN115558343A (en) | 2022-09-26 | 2022-09-26 | Low-water-permeability breathable water-based paint and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115558343A true CN115558343A (en) | 2023-01-03 |
Family
ID=84743799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211173911.5A Pending CN115558343A (en) | 2022-09-26 | 2022-09-26 | Low-water-permeability breathable water-based paint and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115558343A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116574440A (en) * | 2023-04-26 | 2023-08-11 | 广州市百庄复合材料有限公司 | Water-based protective agent and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH107591A (en) * | 1996-05-16 | 1998-01-13 | Sekisui Plastics Co Ltd | Defense of infection and sheet for defending infection |
| CN1208745A (en) * | 1997-07-29 | 1999-02-24 | 罗姆和哈斯公司 | Solubilized hydrophobically-modified alkali-soluble emulsion polymers |
| DE102005003087A1 (en) * | 2005-01-22 | 2006-07-27 | Remmers Baustofftechnik Gmbh | Coating composition, useful for e.g. coating surface area based on aqueous polymer dispersion, comprises a content of fine-crystalline limestone powder, amorphous limestone powder, amorphous silica, a pigment and a modifier |
| CN101348637A (en) * | 2007-07-19 | 2009-01-21 | 塞拉尼斯乳剂股份有限公司 | Coating agent with high weathering resistance, method for its manufacture and application |
| CN101392109A (en) * | 2008-11-07 | 2009-03-25 | 董庆华 | Long acting sustained-release insect prevention additive agent for inner wall paint and preparation method thereof |
| US20120107459A1 (en) * | 2011-03-27 | 2012-05-03 | Wood Willard E | Cyclodextrin compositions, articles, and methods |
| JP2014196419A (en) * | 2013-03-29 | 2014-10-16 | 凸版印刷株式会社 | Gas-barrier coating agent and gas-barrier film |
| CN104356779A (en) * | 2014-11-05 | 2015-02-18 | 三棵树涂料股份有限公司 | Healthy environment-friendly water-based latex paint composition for physically expelling mosquitoes and flies and preparation method thereof |
| CN104629547A (en) * | 2015-01-19 | 2015-05-20 | 安徽嘉年华漆业有限公司 | Special high-performance paint for building internal walls and preparation method thereof |
-
2022
- 2022-09-26 CN CN202211173911.5A patent/CN115558343A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH107591A (en) * | 1996-05-16 | 1998-01-13 | Sekisui Plastics Co Ltd | Defense of infection and sheet for defending infection |
| CN1208745A (en) * | 1997-07-29 | 1999-02-24 | 罗姆和哈斯公司 | Solubilized hydrophobically-modified alkali-soluble emulsion polymers |
| DE102005003087A1 (en) * | 2005-01-22 | 2006-07-27 | Remmers Baustofftechnik Gmbh | Coating composition, useful for e.g. coating surface area based on aqueous polymer dispersion, comprises a content of fine-crystalline limestone powder, amorphous limestone powder, amorphous silica, a pigment and a modifier |
| CN101348637A (en) * | 2007-07-19 | 2009-01-21 | 塞拉尼斯乳剂股份有限公司 | Coating agent with high weathering resistance, method for its manufacture and application |
| CN101392109A (en) * | 2008-11-07 | 2009-03-25 | 董庆华 | Long acting sustained-release insect prevention additive agent for inner wall paint and preparation method thereof |
| US20120107459A1 (en) * | 2011-03-27 | 2012-05-03 | Wood Willard E | Cyclodextrin compositions, articles, and methods |
| JP2014196419A (en) * | 2013-03-29 | 2014-10-16 | 凸版印刷株式会社 | Gas-barrier coating agent and gas-barrier film |
| CN104356779A (en) * | 2014-11-05 | 2015-02-18 | 三棵树涂料股份有限公司 | Healthy environment-friendly water-based latex paint composition for physically expelling mosquitoes and flies and preparation method thereof |
| CN104629547A (en) * | 2015-01-19 | 2015-05-20 | 安徽嘉年华漆业有限公司 | Special high-performance paint for building internal walls and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 叶霖等: "《环糊精化学 从超分子自组装到材料应用》", 北京：北京理工大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116574440A (en) * | 2023-04-26 | 2023-08-11 | 广州市百庄复合材料有限公司 | Water-based protective agent and preparation method thereof |
| CN116574440B (en) * | 2023-04-26 | 2024-01-19 | 广州市百庄复合材料有限公司 | Water-based protective agent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107267061B (en) | Nano inorganic powder modified organic silicon waterproof coating | |
| CN107523150B (en) | Water-based polymer cement-based waterproof coating and preparation method thereof | |
| CN110003771A (en) | A kind of wettable matched paint and preparation method thereof for touching wet trade | |
| CN113861731B (en) | Building coating finish paint with fireproof self-cleaning function and preparation method thereof | |
| CN104592815A (en) | Alkali-resistant primer and preparation method thereof | |
| CN108264832A (en) | Inorganic modified heat-resisting woodcare paint of aqueous dual-component and preparation method thereof and application method | |
| CN101974261A (en) | Neutral water-resistance putty paste and preparation method thereof | |
| CN115558343A (en) | Low-water-permeability breathable water-based paint and preparation method thereof | |
| CN112300703A (en) | Water-based bio-based climbing frame coating and preparation method thereof | |
| CN107629627B (en) | Permeable hydrophobic multifunctional waterproof coating and preparation method and application thereof | |
| CN112159152A (en) | Stone-like paint prepared from flexible colored particles and preparation process thereof | |
| WO2005071033A2 (en) | Method of production of polysilicate binder for adhesives and coatings, polysilicate binder, adhesive composition for adhesives and coating on its basis | |
| CN113292872A (en) | Graphene composite interior wall coating and preparation method thereof | |
| CN109082184A (en) | A kind of elastic emulsion paint of high adhesion force | |
| CN110204932B (en) | Water-based silicate composite heat-insulating flame-retardant coating and preparation method thereof | |
| CN113717599B (en) | Base paint and colorful stone coating | |
| CN113025147A (en) | Water-based wall surface hand-sprayed paint and preparation method thereof | |
| CN102367359B (en) | Water-based sealing primer and its preparation method | |
| CN108003774B (en) | A kind of nano-material modified no-solvent polyurethane woodcare paint and preparation method thereof | |
| CN111500140A (en) | Novel antibacterial and antiviral multifunctional coating and preparation method thereof | |
| CN1325587C (en) | Surpergrade scrubbing-resistant interior wall paint and its prearation method | |
| CN115286945A (en) | Compound inorganic resin, preparation method and single-component micro-cement artistic coating | |
| CN109762385A (en) | A kind of lithium conductive film coating water paint and preparation method thereof | |
| CN115521673A (en) | Environment-friendly exterior wall texture coating not prone to blooming during spraying and preparation method thereof | |
| CN112479671A (en) | Travertine-imitated texture coating and preparation method and use method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |