CN113736331A - Multifunctional outer wall colorful coating and preparation method thereof - Google Patents
Multifunctional outer wall colorful coating and preparation method thereof Download PDFInfo
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- CN113736331A CN113736331A CN202110835182.4A CN202110835182A CN113736331A CN 113736331 A CN113736331 A CN 113736331A CN 202110835182 A CN202110835182 A CN 202110835182A CN 113736331 A CN113736331 A CN 113736331A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/29—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for multicolour effects
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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
- C09D7/65—Additives macromolecular
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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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/18—Spheres
- C08L2205/20—Hollow spheres
Abstract
The invention discloses a multifunctional outer wall colorful paint and a preparation method and application thereof. The coating comprises, by weight, 50-65 parts of a sand-containing base paint, 15-25 parts of a continuous phase emulsion and 15-25 parts of an aqueous solution containing a protective adhesive A, wherein the sand-containing base paint contains expanded microspheres. By adding the expanded microspheres into the coating system, the expanded microspheres are uniformly dispersed in the coating system, so that the density of sand-containing color points in the coating can be reduced, and the color points have good stability in the protective adhesive and the continuous phase. In addition, the addition of the expanded microspheres can also make the coating become fluffy, so that the heat insulation effect of the coating is improved. Furthermore, the expanded microspheres have good compatibility with common non-elastic emulsion, the interaction is enhanced, and the flexibility and the adhesive force of the coating can be improved.
Description
Technical Field
The invention relates to the field of coatings, in particular to a multifunctional outer wall colorful coating and a preparation method thereof.
Background
The colorful stone-like coating applied to the building outer wall mainly comprises products such as water-in-water, water-in-sand and the like, has appearance effects which are comparable to those of traditional decorative materials such as granite and the like, is lighter than the granite in weight, reduces the potential safety hazard of falling from high altitude as the decorative material of the outer wall, and can reduce the development and consumption of stone resources such as the granite and the like, thereby being greatly welcomed.
However, the coating is often used outdoors, especially for exterior wall coatings, not only can play a role in decoration, but also can effectively reduce the temperature of a building and reduce energy consumption. However, the colorful stone-like coating is used for exterior walls such as water-coated sand, because of containing a large amount of sand, the specific weight of the color points is too high, the long-term stable storage is not facilitated (the shelf life is generally about 6 months), the color points can be settled and accumulated at the bottom when the storage time is too long, the color points are mutually extruded, and the coating cannot be used continuously, and in addition, the colorful stone-like coating has poor heat insulation effect when being used as an exterior wall coating, and the wall body coated with the coating has tiny cracks and is difficult to adapt to temperature change when being subjected to insolation or frost, particularly in areas with large day-night temperature difference.
Aiming at the problem of color point deposition, a large amount of thixotropic auxiliary agent such as bentonite is tried to be added in the traditional technology, so that the effect of simulating sedimentation of a coating product is achieved, and the coating product is seriously whitened when meeting water; the amount of sand and stone in the paint is reduced, but the sedimentation imitating effect is not obvious, and the stone imitating texture effect of the whole pattern layer is weakened; the hollow glass beads are added into the paint raw materials, but the hollow glass beads are poor in mechanical stability, the glass beads are broken due to the production stirring link, and the anti-settling effect of the final paint product added with the hollow glass beads is not greatly improved.
Aiming at the problem of poor heat insulation effect, the traditional technology adopts a heat reflection technology to solve the problem of poor heat insulation effect, but the stain resistance of the coating by the heat reflection technology is very strict, and if dust is accumulated on the surface area of the coating, the effect of the heat reflection technology is greatly weakened.
In order to solve the problem of large temperature difference, the traditional technology matches a certain elastic emulsion with the coating to ensure that the coating has certain elasticity and flexibility to adapt to the change of temperature, but the addition of the elastic emulsion can cause the stability of a sand-in-water coating system to be poor.
Disclosure of Invention
Based on the above, there is a need for a multifunctional exterior wall multicolor paint with improved flexibility, stability and heat insulation effect, and a preparation method and application thereof.
The invention provides a coating which comprises, by weight, 50-65 parts of a sand-containing base paint, 15-25 parts of a continuous phase emulsion and 15-25 parts of an aqueous solution containing a protective adhesive A;
the sand-containing base paint comprises, by weight, 80-95 parts of base paint and 35-45 parts of sandstone, wherein the base paint comprises, by weight, 3-6 parts of expanded microspheres, 0.8-1.3 parts of cellulose, 0.1-0.2 part of bactericide A, 0.1-0.2 part of mildew preventive, 0.1-1 part of antifreeze, 0.1-1 part of titanium dioxide, 8-20 parts of kaolin, 20-25 parts of emulsion A, 1-2 parts of film-forming auxiliary agent A, 0.1-0.5 part of thickener A, 8-12 parts of aqueous solution containing protective adhesive B and 35-50 parts of water, and the pH value of the base paint is 8-9.5;
the continuous phase emulsion comprises 0.2-1 part of bactericide B, 0.1-0.2 part of defoaming agent, 0.8-2 parts of film-forming assistant B, 50-65 parts of emulsion B, 0.1-0.5 part of thickening agent B and 20-40 parts of water, and the pH value of the continuous phase emulsion is 8.5-9.5;
the mass fraction of the protective adhesive A in the aqueous solution containing the protective adhesive A is 1-10%.
In one embodiment, the expanded microspheres have a density of 36kg/m3～40kg/m3。
In one embodiment, the expanded microspheres have a particle size of 20 to 55 μm.
In one embodiment, the mass fraction of the protective colloid B in the aqueous solution containing the protective colloid B is 8-12%.
In one embodiment, the protective glue a and the protective glue B are lithium magnesium silicate.
In one embodiment, the emulsion a and the emulsion B are each independently selected from at least one of a pure acrylic emulsion and a silicone acrylic emulsion.
In one embodiment, the cellulose is hydroxyethyl cellulose ether.
The invention also provides a preparation method of the coating, which comprises the following steps:
s1, preparing materials according to the raw material formula of the coating;
s2, preparing the sand-containing base paint, the continuous phase emulsion and the aqueous solution containing the protective adhesive A respectively;
s3, adding the sand-containing base paint into the aqueous solution containing the protective adhesive A, granulating, adding the continuous phase emulsion, and uniformly stirring.
In one embodiment, the method for preparing the sand-containing base paint in step S2 includes the following steps: mixing water, the cellulose, the bactericide A, the mildew preventive, the antifreezing agent, the titanium dioxide and the kaolin, adjusting the pH value to 8-9.5, stirring for the first time, adding the emulsion A, the expanded microspheres, the film-forming assistant A, the thickening agent A and the aqueous solution containing the protective adhesive B, stirring for the second time, standing for 10-14 hours after stirring is completed, and adding the sandstone.
The invention also provides application of the coating in preparing building wall decoration.
By adding the expanded microspheres into the coating system, the expanded microspheres are uniformly dispersed in the coating system, so that the density of sand-containing color points in the coating can be reduced, and the color points have good stability in the protective adhesive and the continuous phase. In addition, the addition of the expanded microspheres can also make the coating become fluffy, so that the heat insulation effect of the coating is improved. Furthermore, the expanded microspheres have good compatibility with common non-elastic emulsion, the interaction is enhanced, and the flexibility and the adhesive force of the coating can be improved.
Detailed Description
The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise. In the description of the present invention, "a plurality" means at least one, e.g., one, two, etc., unless specifically limited otherwise.
The words "preferably," "more preferably," and the like in this disclosure mean embodiments of the invention that may, in some instances, provide certain benefits. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.
When a range of values is disclosed herein, the range is considered to be continuous and includes both the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range-describing features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to encompass any and all subranges subsumed therein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention provides a coating which comprises, by weight, 50-65 parts of a sand-containing base paint, 15-25 parts of a continuous phase emulsion and 15-25 parts of an aqueous solution containing a protective adhesive A, wherein the mass fraction of the protective adhesive A in the aqueous solution containing the protective adhesive A is 1% -10%.
Preferably, the coating comprises, by weight, 55-65 parts of a sand-containing base paint, 18-22 parts of a continuous phase emulsion and 18-22 parts of an aqueous solution containing a protective adhesive A, wherein the mass fraction of the protective adhesive A in the aqueous solution containing the protective adhesive A is 3% -8%.
The sand-containing base paint comprises, by weight, 80-95 parts of base paint and 35-45 parts of sandstone, wherein the base paint comprises, by weight, 3-6 parts of expanded microspheres, 0.8-1.3 parts of cellulose, 0.1-0.2 part of bactericide A, 0.1-0.2 part of mildew preventive, 0.1-1 part of antifreeze, 0.1-1 part of titanium dioxide, 8-20 parts of kaolin, 20-25 parts of emulsion A, 1-2 parts of film-forming auxiliary agent A, 0.1-0.5 part of thickener A, 8-12 parts of aqueous solution containing protective adhesive B and 35-50 parts of water, and the pH value of the base paint is 8-9.5.
Preferably, the sand-containing base paint comprises, by weight, 85-95 parts of base paint and 38-42 parts of gravel, wherein the base paint comprises, by weight, 3-6 parts of expanded microspheres, 1-1.3 parts of cellulose, 0.1-0.2 part of bactericide A, 0.1-0.2 part of mildew preventive, 0.4-1 part of anti-freezing agent, 0.3-0.8 part of titanium dioxide, 8-18 parts of kaolin, 20-25 parts of emulsion A, 1-1.5 parts of film-forming assistant A, 0.1-0.3 part of thickener A, 8-10 parts of aqueous solution containing protective adhesive B and 35-45 parts of water, and the pH value of the base paint is 8.5-9.5.
Preferably, the mass fraction of the protective colloid B in the aqueous solution containing the protective colloid B is 8% to 12%.
Specifically, the pH value of the base paint is adjusted to 8-9.5 by using a pH regulator A, and further, the pH regulator A is 0.1-0.2 part by weight.
The continuous phase emulsion comprises 0.2-1 part of bactericide B, 0.1-0.2 part of defoaming agent, 0.8-2 parts of film-forming assistant B, 50-65 parts of emulsion B, 0.1-0.5 part of thickening agent B and 20-40 parts of water, and the pH value of the continuous phase emulsion is 8.5-9.5.
Preferably, the continuous phase emulsion comprises 0.2-0.8 part of bactericide B, 0.1-0.2 part of defoaming agent, 0.8-1.5 parts of film-forming assistant B, 50-60 parts of emulsion B, 0.1-0.3 part of thickening agent B and 30-35 parts of water, and the pH value of the continuous phase emulsion is 8.5-9.5.
Specifically, the pH value of the continuous phase emulsion is adjusted to 8-9.5 by using a pH regulator B, and further, the pH regulator B is 0.1-0.2 part by weight.
The expanded microsphere is thermoplastic hollow polymer microsphere, which consists of thermoplastic polymer shell and liquid alkane gas sealed in.
In one specific example, the expanded microspheres have a density of 36kg/m3～40kg/m3。
It will be appreciated that the density of the expanded microspheres may be, but is not limited to, 36kg/m3、37kg/m3、38kg/m3、39kg/m3Or 40kg/m3。
Furthermore, the particle size of the expanded microsphere is 20-55 μm.
It is understood that the particle size of the above expanded microspheres may be, but not limited to, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm or 55 μm.
In one specific example, the sand mesh number is 80-100, and preferably 90.
In one specific example, the protective paste a and the protective paste B are lithium magnesium silicate.
In a specific example, emulsion a and emulsion B are each independently selected from at least one of a pure acrylic emulsion and a silicone acrylic emulsion.
In one specific example, bactericide a and bactericide B are isothiazolinones.
In one particular example, the cellulose is hydroxyethyl cellulose ether.
In one particular example, coalescents A and B are twelve alcohol esters.
In one specific example, thickener a and thickener B are alkali-soluble emulsion-type thickeners.
In one particular example, the defoamer is a polyetherester.
In one particular example, the mold inhibitor is benzisothiazolinone.
In one particular example, the anti-freeze agent is a glycol, preferably the anti-freeze agent is propylene glycol.
In one specific example, pH adjuster a and pH adjuster B are aminomethyl propanol.
By adding the expanded microspheres into the coating system, the expanded microspheres are uniformly dispersed in the coating system, so that the density of sand-containing color points in the coating can be reduced, the color points have good stability in the protective adhesive and the continuous phase, can be uniformly dispersed in the system, are not easy to extrude, can be stored for a long time, and have improved stability in the transportation process; after the microspheres are added, the dosage of the anti-settling rheological additive can be greatly reduced or not added, so that the problem of whitening when meeting water caused by the addition of the rheological additive can be reduced.
In addition, the addition of the expanded microspheres can also make the coating fluffy and improve the heat insulation effect of the coating, so that the coating is thicker than the traditional sand-in-water colorful stone-like coating under the same quality, thereby achieving the heat insulation effect. The heat insulation effect in the invention does not mean that the coating which has certain reflection to the solar energy is made by using special pigment filler in the traditional method, but means the heat insulation effect which is achieved by physical barrier.
Furthermore, the expanded microspheres have good compatibility with common non-elastic emulsion, the interaction is enhanced, and the flexibility and the adhesive force of the coating can be improved.
The invention also provides a preparation method of the coating, which comprises the following steps:
step S1, preparing materials according to the raw material formula of the coating;
step S2, preparing a sand-containing base paint, a continuous phase emulsion and an aqueous solution containing a protective adhesive A respectively;
and step S3, adding the sand-containing base paint into the aqueous solution containing the protective adhesive A, granulating, adding the continuous phase emulsion, and uniformly stirring.
Specifically, the preparation method of the sand-containing base paint comprises the following steps: after water is added into a reaction kettle, cellulose is slowly added in the stirring process, a bactericide A, a mildew preventive, an antifreezing agent, titanium dioxide, kaolin and a pH regulator A are sequentially added in sequence, after the pH value is adjusted to 8-9.5, the first stirring is carried out for 15-25 minutes at a high speed of 800 r/m-1200 r/m, then the rotation speed is reduced for carrying out second stirring, the rotation speed is 400 r/m-800 r/m, then emulsion A, expanded microspheres, a film-forming assistant A, a thickening agent A and an aqueous solution containing protective glue B are added, the second stirring is carried out for 15-25 minutes, and after the mixture is placed for 10-14 hours and is completely stabilized, sandstone is added.
Preferably, the preparation method of the sand-containing base paint comprises the following steps: after water is added into a reaction kettle, cellulose is slowly added in the stirring process, a bactericide A, a mildew preventive, an antifreezing agent, titanium dioxide, kaolin and a pH regulator A are sequentially added in sequence, after the pH value is adjusted to 9, the mixture is stirred at a high speed of over 1000r/m for 20 minutes, the rotating speed is reduced to 600r/m, an emulsion A, expansion microspheres, a film-forming assistant A, a thickening agent A and an aqueous solution containing a protective adhesive B are added, the mixture is stirred for 20 minutes, and after the mixture is completely stabilized, gravels are added after the mixture is placed for 12 hours.
Specifically, the preparation method of the continuous phase emulsion comprises the following steps: and sequentially adding water, a bactericide B, a defoaming agent, a pH regulator B, a film-forming assistant B, an emulsion B and a thickening agent B into the reaction kettle, regulating the pH value to 8-9.5, and stirring at the rotating speed of 400-800 r/m for 15-25 minutes.
Preferably, the preparation method of the continuous phase emulsion comprises the following steps: and sequentially adding water, a bactericide B, a defoaming agent, a pH regulator B, a film-forming assistant B, an emulsion B and a thickening agent B into the reaction kettle, regulating the pH value to 9, and stirring at the rotating speed of 600r/m for 20 minutes.
Specifically, the preparation method of the aqueous solution containing the protective glue A comprises the following steps: mixing water with the protective adhesive A, and stirring for 30-50 minutes.
Preferably, the stirring time is 40 minutes.
The invention also provides an application of the coating, and an application of the coating in preparing building wall decoration.
Specific examples are provided below to further illustrate the coating of the present invention and the method of preparing the same in detail.
The raw materials in the following embodiments are commercially available unless otherwise specified.
The protective glue A and the protective glue B are magnesium lithium silicate purchased from BYK company; the model is S-482.
The thickening agent A and the thickening agent B are alkali soluble emulsion type thickening agents which are purchased from Rohm and Haas and have the model number of TT-935.
The expanded microsphere is EXPANCEL WE series product of Noron corporation, model number 461WE 40d 36.
The hollow glass beads are made of medium steel group Maanshan institute New Material science and technology Limited company, and have the model number of 38P5500
The cellulose is a product of Ashland, model number 250 HHBR.
Emulsion A is a product of Shanghai Showa high molecular Co., Ltd, and has a model number of 4765.
Emulsion B is a Wanhua chemical product, and the model is 8087.
Example 1
The embodiment provides a coating, which comprises, by weight, 60 parts of a sand-containing base paint, 20 parts of a continuous phase emulsion and 20 parts of a protective adhesive A composition with the mass fraction of 5%; the sand-containing base paint comprises, by weight, 89.2 parts of base paint and 40 parts of 90-mesh sandstone.
The base paint comprises, by weight, 4 parts of expanded microspheres, 40 parts of water, 1.2 parts of hydroxyethyl cellulose ether, 0.1 part of isothiazolinone, 0.1 part of benzisothiazolinone, 0.7 part of propylene glycol, 0.1 part of aminomethyl propanol, 0.5 part of titanium dioxide, 10 parts of kaolin, 23 parts of pure acrylic emulsion, 1.2 parts of alcohol ester dodeca, 0.2 part of alkali-soluble emulsion type thickening agent and 8 parts of 10% magnesium silicate lithium aqueous solution.
The continuous phase emulsion comprises, by weight, 30 parts of water, 55 parts of silicone-acrylic emulsion, 0.5 part of isothiazolinone, 0.1 part of polyether ester, 0.2 part of aminomethyl propanol, twelve 1 part of alcohol ester and 0.2 part of alkali-soluble emulsion type thickening agent.
The aqueous solution of the protective glue A is a 5% magnesium lithium silicate aqueous solution by mass fraction.
The preparation method of the coating and the raw materials in the embodiment is as follows:
preparing a sand-containing base paint:
the preparation method of the sand-containing base paint comprises the following steps: after water is added into a reaction kettle, cellulose is slowly added in the stirring process, a bactericide A, a mildew preventive, an antifreezing agent, titanium dioxide, kaolin and a pH regulator A are sequentially added in sequence, after the pH value is adjusted to 9, the mixture is stirred at a high speed of over 1000r/m for 20 minutes, the rotating speed is reduced to 600r/m, then emulsion A, expanded microspheres, a film-forming assistant A, a thickening agent A and protective adhesive B are added, and the mixture is stirred for 20 minutes. After standing for 12 hours and completely stabilizing, adding sandstone.
Preparation of continuous phase emulsion:
a method of preparing a continuous phase emulsion comprising the steps of: and sequentially adding water, a bactericide B, a defoaming agent, a pH regulator B, a film-forming assistant B, an emulsion B and a thickening agent B into the reaction kettle, regulating the pH value to 9, and stirring at the rotating speed of 600r/m for 20 minutes.
Preparation of aqueous solution of protective gum a: mixing water and the protective adhesive A to prepare a 5 mass percent magnesium lithium silicate aqueous solution.
Preparing the coating:
according to the formula proportion of the embodiment, the sand-containing base paint is added into the aqueous solution of the protective adhesive A, and the continuous phase emulsion is added after granulation and is stirred uniformly.
Examples 2 to 3
The contents of the components in the raw materials of the sand-containing base paint are different from those in example 1, and the other raw materials are the same as those in example 1.
Comparative example 1
Comparative example 1 the other raw materials and preparation methods were the same as in example 1, except that the sand-containing base paint was not added with expanded microspheres and acrylic emulsion, and was added with aqueous bentonite and an elastic emulsion.
Comparative example 2
Comparative example 2 the other raw materials and preparation methods were the same as in example 1, except that no expanded microspheres were added to the sand-containing base paint, and aqueous bentonite was added.
Comparative example 3
Comparative example 3 the other raw materials and preparation methods were the same as in example 1, except that no expanded microspheres were added to the sand-containing base paint, and more acrylic emulsion was added.
Comparative example 4
Comparative example 4 the other raw materials and the preparation method are the same as those in example 2, except that the sand-containing base paint is prepared by adding hollow glass beads into a medium steel group Maanshan institute New Material science and technology Limited product, model number 38P5500, density 0.38g/cm3Particle size of 40um
The compositions of the sand-containing base paint raw materials of the above-described examples and comparative examples are shown in table 1.
TABLE 1 ingredient Table of Sand-containing base paint raw materials of examples 1 to 3 and comparative examples 1 to 4
Performance testing and result analysis.
Coating whitening when encountering water test: paint films of the paint of the examples and the paint of the comparative examples are respectively prepared on a 15 cm-by-50 cm glass plate by a 1000-micron wet film preparation device, one third of the paint films is soaked in tap water after being dried for 7 days at normal temperature, and the whitening condition of the paint film is observed after the paint films are soaked for 30 min.
The flexibility test method was carried out according to the specification of 6.21 in GB/T9779-2015.
The heat storage stability test method comprises placing the sample in 1L plastic container with good sealing property, sealing, placing in a 50 deg.C constant temperature drying oven, taking out after 14 days, standing at 25 deg.C for 1 day, observing the state of the container, and observing whether there is delamination and bleeding.
The heat insulation effect test method comprisesSpraying 1.3kg of coating material on the surface of the substrate at 1m2After drying, the coated flat plate and the blank flat plate are uniformly irradiated by an infrared lamp, and after a specified time, the average temperature of the two surfaces of the coated flat plate and the blank flat plate is respectively measured by an infrared thermal imager, and the heat insulation temperature difference of the coating sample is calculated.
The sound insulation effect test method comprises the steps of taking 7.8kg of coating material, spraying 6 blocks of coating material with the area of 1m2Spraying the coating on the square flat plate twice to uniformly spray the coating on the flat plate, and after drying, inwards manufacturing 6 square flat plate coatings into a 1m square flat plate3The square (the square upper cover can be opened and closed), a loudspeaker with the same volume is suspended in the center of the square, and after the upper cover is closed, a decibel tester is arranged around the square, data are recorded, and the sound insulation effect evaluation is obtained. The results of the performance test of the coatings obtained in examples 1 to 3 and comparative examples 1 to 4 are shown in Table 2.
TABLE 2 results of performance test of the coatings obtained in examples 1 to 3 and comparative examples 1 to 4
As can be seen from comparison of the test results of example 1 and comparative example 1, the expanded microspheres can replace the flexibility provided by the elastic emulsion in the system to a certain extent; as can be seen from a comparison of the test results of example 2 and comparative example 2, the addition of the expanded microspheres allows the product to have good crack resistance even at high Pigment Volume Concentrations (PVC). As can be seen from the comparison of the test results of example 3 and comparative example 3, because of the addition of the expanded microspheres, when 50 parts of sandstone is added under the condition of using common acrylic emulsion and low PVC, the thermal stability shown in example 3 is superior to that of comparative example 3 without the addition of the expanded microspheres, and the comparison of the test results of example 2 and comparative example 4 shows that the expanded microspheres can obviously improve the colorful anti-settling property, and the anti-settling property is better than that of hollow glass microspheres. Because the expanded microspheres are added, the settleability is improved, and the water-white resistance of the product is obviously improved without adding anti-settling agents such as water-based bentonite and the like.
After the expanded microspheres are used in the embodiments 1 to 3, the flexibility, the heat storage stability, the heat insulation effect and the sound insulation effect are all superior to the proportion, and the overall performance of the coating is improved to a certain extent, so that the coating becomes a multi-color coating with multiple functions and excellent performance.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The coating is characterized by comprising 50-65 parts by weight of sand-containing base paint, 15-25 parts by weight of continuous phase emulsion and 15-25 parts by weight of aqueous solution containing protective adhesive A;
the sand-containing base paint comprises, by weight, 80-95 parts of base paint and 35-45 parts of sandstone, wherein the base paint comprises, by weight, 3-6 parts of expanded microspheres, 0.8-1.3 parts of cellulose, 0.1-0.2 part of bactericide A, 0.1-0.2 part of mildew preventive, 0.1-1 part of antifreeze, 0.1-1 part of titanium dioxide, 8-20 parts of kaolin, 20-25 parts of emulsion A, 1-2 parts of film-forming auxiliary agent A, 0.1-0.5 part of thickener A, 8-12 parts of aqueous solution containing protective adhesive B and 35-50 parts of water, and the pH value of the base paint is 8-9.5;
the continuous phase emulsion comprises 0.2-1 part of bactericide B, 0.1-0.2 part of defoaming agent, 0.8-2 parts of film-forming assistant B, 50-65 parts of emulsion B, 0.1-0.5 part of thickening agent B and 20-40 parts of water, and the pH value of the continuous phase emulsion is 8.5-9.5;
the mass fraction of the protective adhesive A in the aqueous solution containing the protective adhesive A is 1-10%.
2. The coating of claim 1, wherein the expanded microspheres have a density of 36kg/m3～40kg/m3。
3. The coating of claim 1, wherein the expanded microspheres have a particle size of 20 μm to 55 μm.
4. The coating of claim 1, wherein the mass fraction of the protective gum B in the aqueous solution containing the protective gum B is 8% to 12%.
5. The coating of claim 1 or 4, wherein the protective gum A and the protective gum B are lithium magnesium silicate.
6. The coating of claim 1, wherein emulsion a and emulsion B are each independently selected from at least one of a pure acrylic emulsion and a silicone acrylic emulsion.
7. The coating of claim 1, wherein the cellulose is hydroxyethyl cellulose ether.
8. The preparation method of the coating is characterized by comprising the following steps:
s1, preparing raw material formula of the coating according to any one of claims 1-7;
s2, preparing the sand-containing base paint, the continuous phase emulsion and the aqueous solution containing the protective adhesive A respectively;
s3, adding the sand-containing base paint into the aqueous solution containing the protective adhesive A, granulating, adding the continuous phase emulsion, and uniformly stirring.
9. The method of preparing a paint according to claim 8, wherein the method of preparing the sand-containing base paint in step S2 comprises the steps of: mixing water, the cellulose, the bactericide A, the mildew preventive, the antifreezing agent, the titanium dioxide and the kaolin, adjusting the pH value to 8-9.5, stirring for the first time, adding the emulsion A, the expanded microspheres, the film-forming assistant A, the thickening agent A and the aqueous solution containing the protective adhesive B, stirring for the second time, standing for 10-14 hours after stirring is completed, and adding the sandstone.
10. Use of a coating according to any one of claims 1 to 7 for the preparation of a building wall decoration.
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| CN202110835182.4A CN113736331A (en) | 2021-07-23 | 2021-07-23 | Multifunctional outer wall colorful coating and preparation method thereof |
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| CN202110835182.4A CN113736331A (en) | 2021-07-23 | 2021-07-23 | Multifunctional outer wall colorful coating and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114591683A (en) * | 2022-01-13 | 2022-06-07 | 三棵树(上海)新材料研究有限公司 | High-coating light sand-in-water coating and preparation method thereof |
| CN115322596A (en) * | 2022-08-23 | 2022-11-11 | 河北嘉宝莉涂料有限公司 | Colorful stone-like effect paint and preparation method and coating method thereof |
| CN116574422A (en) * | 2023-03-28 | 2023-08-11 | 雅士利涂料（苏州）有限公司 | Granite-like paint with integrated sand-in-water bottom and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110527384A (en) * | 2019-09-10 | 2019-12-03 | 北京莱恩斯新材料科技有限公司 | Application of the expanded and vitrified small ball in water burnt-in sand base paint, water burnt-in sand base paint, preparation method and water burnt-in sand coating |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527384A (en) * | 2019-09-10 | 2019-12-03 | 北京莱恩斯新材料科技有限公司 | Application of the expanded and vitrified small ball in water burnt-in sand base paint, water burnt-in sand base paint, preparation method and water burnt-in sand coating |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114591683A (en) * | 2022-01-13 | 2022-06-07 | 三棵树(上海)新材料研究有限公司 | High-coating light sand-in-water coating and preparation method thereof |
| CN115322596A (en) * | 2022-08-23 | 2022-11-11 | 河北嘉宝莉涂料有限公司 | Colorful stone-like effect paint and preparation method and coating method thereof |
| CN115322596B (en) * | 2022-08-23 | 2023-04-11 | 河北嘉宝莉涂料有限公司 | Colorful stone-like effect paint and preparation method and coating method thereof |
| CN116574422A (en) * | 2023-03-28 | 2023-08-11 | 雅士利涂料（苏州）有限公司 | Granite-like paint with integrated sand-in-water bottom and preparation method thereof |
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