CN114350219A - Water-based reflective heat-insulation dyed mortar material, preparation method and application thereof, and preparation method of dyed sand - Google Patents
Water-based reflective heat-insulation dyed mortar material, preparation method and application thereof, and preparation method of dyed sand Download PDFInfo
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Abstract
The invention provides a water-based reflective heat insulation dyed sand slurry, a preparation method and application thereof, and a preparation method of dyed sand, and relates to the technical field of coatings. The invention provides a water-based reflective heat-insulating dyed mortar material, which comprises, by mass, 0.5-1.0% of an ammonium salt dispersant, 0.1-0.5% of an organic silicon defoaming agent, 5-40% of silicon-aluminum coated modified nano titanium dioxide, 35-45% of a modified acrylic emulsion, 0.2-0.5% of a preservative, 0.2-0.5% of a mineral oil defoaming agent, 0.3-0.5% of an ASE thickening agent, 0.3-0.5% of a PU thickening agent, 0.1-0.3% of an ultraviolet light absorber, and the balance of water. The water-based reflective heat-insulating sand-dyeing slurry provided by the invention can obviously improve the adhesive force of a paint film and endow the paint film with extremely high weather resistance and reflective heat-insulating property.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a water-based reflective heat-insulating dyed mortar material, a preparation method and application thereof, and a preparation method of dyed sand.
Background
The exterior wall of the building uses a large amount of stone-like paint as a decorative material, and one of the main raw materials of the exterior wall stone-like paint is colored sand. The color sand is mainly divided into natural color sand and artificial color sand. The natural color sand is mainly prepared by crushing and screening natural ores and has the defects of limited resources, incomplete colors and high cost.
The artificial color sand is prepared by coloring white sand or sand to be colored with dye and/or pigment, and has more complete and adjustable color. Generally, slurry is needed to dye white sand in the manufacturing process of artificial colored sand, but the color layer of the artificial colored sand prepared at present is poor in adhesion, easy to fall off, poor in weather resistance and reflective heat insulation performance, and incapable of meeting the actual engineering requirements.
Disclosure of Invention
The invention aims to provide a water-based reflective heat-insulating sand-dyeing slurry, a preparation method and application thereof, and a preparation method of dyeing sand.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a water-based reflective heat-insulation dyed mortar material, which comprises, by mass, 0.5-1.0% of an ammonium salt dispersant, 0.1-0.5% of an organic silicon defoaming agent, 5-40% of silicon-aluminum coated modified nano titanium dioxide, 35-45% of a modified acrylic emulsion, 0.2-0.5% of a preservative, 0.2-0.5% of a mineral oil defoaming agent, 0.3-0.5% of an ASE thickening agent, 0.3-0.5% of a PU thickening agent, 0.1-0.3% of an ultraviolet absorber, and the balance of water.
Preferably, the average particle size of the silicon-aluminum coated modified nano titanium dioxide is 700 nm.
Preferably, the silicon-aluminum coated modified nano titanium dioxide comprises nano titanium dioxide and a silicon-aluminum coated film coated on the surface of the nano titanium dioxide; the coating mass content of the silicon-aluminum coating is 4.1-6.2%.
Preferably, the modified acrylic emulsion is a silicone modified acrylic emulsion.
The invention provides a preparation method of the water-based reflective heat-insulation dyed mortar material in the technical scheme, which comprises the following steps:
performing first mixing on part of water, an ammonium salt dispersant and an organic silicon defoaming agent to obtain a first intermediate system;
carrying out second mixing on the first intermediate system and the silicon-aluminum coated modified nano titanium dioxide to obtain a second intermediate system;
thirdly mixing the second intermediate system with the modified acrylic emulsion, the preservative, the mineral oil defoaming agent, the ASE thickening agent and the PU thickening agent to obtain a third intermediate system;
and fourthly, mixing the third intermediate system, the ultraviolet absorber and the residual water to obtain the aqueous reflective heat-insulating dyed mortar.
The invention provides the application of the water-based reflective insulation dyed mortar material in the technical scheme or the water-based reflective insulation dyed mortar material prepared by the preparation method in the technical scheme in the preparation of dyed sand.
The invention also provides a preparation method of the dyed sand, which comprises the following steps:
mixing the white slurry and the color paste to obtain colored paint; the white slurry is the aqueous reflective heat-insulating dyed mortar material prepared by the preparation method in the technical scheme or the aqueous reflective heat-insulating dyed mortar material prepared by the preparation method in the technical scheme;
and mixing the colored paint, a curing agent and white sand, and dyeing to obtain dyed sand.
Preferably, the color paste comprises a cold red color paste, a cold yellow color paste or a cold black color paste.
Preferably, the curing agent is an inorganic crosslinking curing agent.
Preferably, the dyeing temperature is 80-120 ℃, and the heat preservation time is 8-15 min.
The invention provides a water-based reflective heat-insulation dyed mortar material, which comprises, by mass, 0.5-1.0% of an ammonium salt dispersant, 0.1-0.5% of an organic silicon defoaming agent, 5-40% of silicon-aluminum coated modified nano titanium dioxide, 35-45% of a modified acrylic emulsion, 0.2-0.5% of a preservative, 0.2-0.5% of a mineral oil defoaming agent, 0.3-0.5% of an ASE thickening agent, 0.3-0.5% of a PU thickening agent, 0.1-0.3% of an ultraviolet absorber, and the balance of water. The modified acrylic emulsion is used as a film forming substance, so that the flexibility and the friction resistance of a paint film can be remarkably improved, and the adhesive force of the paint film is improved. The invention adopts silicon-aluminum coated modified nano titanium dioxide as pigment, and can endow paint film with extremely high weather resistance and reflective heat insulation performance. The invention utilizes the high reflection effect of the coating film on light and heat to reflect but not absorb most of the energy irradiated on the paint film by the sun, thereby reducing the surface temperature of the paint film. The results of the examples show that the reflectivity of the dyed sand prepared by the aqueous reflective heat-insulating dyed sand slurry provided by the invention is more than 90%, and the dyed sand has higher practical value.
In addition, the ultraviolet absorber is added, so that the photochemical reaction can be avoided under the action of ultraviolet light or visible light, the stability of a paint film on chemical materials and water is favorably improved, the stability on heat is good, the volatility of the ultraviolet absorber is small, and the compatibility of the ultraviolet absorber on high polymer materials in slurry is good.
Detailed Description
The invention provides a water-based reflective heat-insulation dyed mortar material, which comprises, by mass, 0.5-1.0% of an ammonium salt dispersant, 0.1-0.5% of an organic silicon defoaming agent, 30-40% of silicon-aluminum coated modified nano titanium dioxide, 35-45% of a modified acrylic emulsion, 0.2-0.5% of a preservative, 0.2-0.5% of a mineral oil defoaming agent, 0.3-0.5% of an ASE thickening agent, 0.3-0.5% of a PU thickening agent, 0.1-0.3% of an ultraviolet absorber, and the balance of water.
In the present invention, all the starting materials for the preparation are commercially available products known to those skilled in the art unless otherwise specified.
The water-based reflective heat-insulation sand-dyeing slurry provided by the invention comprises 0.5-1.0% of ammonium salt dispersant by mass percentage, and preferably 0.6-0.8%. In a specific embodiment of the invention, the ammonium salt dispersant is a BASF H-5040 dispersant.
The water-based reflective heat-insulation dyed mortar provided by the invention comprises 0.1-0.5% of organic silicon defoaming agent by mass percentage, and preferably 0.2-0.4% of organic silicon defoaming agent by mass percentage. In the present invention, the active ingredient of the silicone antifoaming agent is preferably silicone emulsion. In a specific embodiment of the present invention, the silicone defoamer is Tego 825 defoamer.
The water-based reflective heat-insulation sand-dyeing slurry provided by the invention comprises 5-40% by mass of silicon-aluminum coated modified nano titanium dioxide, and preferably 8-30%. In the invention, the average particle size of the silicon-aluminum coated modified nano titanium dioxide is preferably 700 nm.
In the invention, the silicon-aluminum coated modified nano titanium dioxide preferably comprises nano titanium dioxide and a silicon-aluminum coating coated on the surface of the nano titanium dioxide; the coating mass content of the silicon-aluminum coating is preferably 4.1-6.2%. In the invention, the mass content of the silicon element in the silicon-aluminum coating is preferably 2.4-3.2%, and the mass content of the aluminum element is preferably 1.7-3.0%.
In a specific embodiment of the invention, the silicon-aluminum coated modified nano titanium dioxide is RS-P269 sold by Sonce leaves in Shanghai.
According to the invention, the silicon-aluminum coating is used for modifying the nano titanium dioxide, so that the wear resistance of the product is enhanced, the aluminum film has a reflection effect on sunlight, the coated nano titanium dioxide has a reflection function on the sunlight, the heat in the sunlight is reflected to the atmosphere and cannot be transferred to the indoor through the paint film and the wall body, and the energy consumption of the air conditioner in summer is reduced.
The water-based reflective heat-insulation sand-dyeing slurry comprises, by mass, 35-45% of a modified acrylic emulsion, and preferably 40-42%. In the present invention, the modified acrylic emulsion is preferably a silicone modified acrylic emulsion.
In a specific embodiment of the invention, the modified acrylic emulsion is the RS-6000B emulsion sold by Sonce leaves.
The water-based reflective heat-insulating sand-dyeing slurry provided by the invention comprises 0.2-0.5% of preservative by mass percentage, and preferably 0.3-0.4% of preservative by mass percentage. In a specific embodiment of the present invention, the preservative is 415M preservative sold by new sea wood.
The water-based reflective heat-insulation dyed mortar provided by the invention comprises 0.2-0.5% of mineral oil defoaming agent by mass percentage, and preferably 0.3-0.4% of mineral oil defoaming agent by mass percentage. In a specific embodiment of the invention, the mineral oil defoamer is a BASFA10 defoamer.
The water-based reflective insulation sand-dyeing slurry provided by the invention comprises 0.3-0.5% of ASE thickening agent by mass percentage, and preferably 0.4-0.5% by mass percentage. In a specific embodiment of the invention, the ASE-based thickener is the ASE 1130H thickener sold by rasida.
The water-based reflective heat-insulating dyed mortar provided by the invention comprises 0.3-0.5% of PU thickening agent by mass percentage, and preferably 0.4-0.5% by mass percentage. In a specific embodiment of the invention, the PU thickener is a DOW RM-8WPU thickener.
The invention adopts the PU thickening agent and the ASE thickening agent for composite use, and has better leveling property of a construction paint film and better storage stability in a tank.
The water-based reflective heat-insulating sand-dyeing slurry comprises, by mass, 0.1-0.3% of an ultraviolet absorber, and preferably 0.2-0.3%. In a specific embodiment of the invention, the ultraviolet light absorber is Tinuvin326 sold by basf.
The water-based reflective insulation sand-dyeing slurry provided by the invention comprises the balance of water in percentage by mass.
In the invention, the viscosity of the aqueous reflective insulation sand-dyeing slurry is preferably 13000-35000 mpa-s, and more preferably 15500-20500 mpa-s.
The invention also provides a preparation method of the water-based reflective heat-insulating dyed mortar material in the technical scheme, which comprises the following steps:
performing first mixing on part of water, an ammonium salt dispersant and an organic silicon defoaming agent to obtain a first intermediate system;
carrying out second mixing on the first intermediate system and the silicon-aluminum coated modified nano titanium dioxide to obtain a second intermediate system;
thirdly mixing the second intermediate system with the modified acrylic emulsion, the preservative, the mineral oil defoaming agent, the ASE thickening agent and the PU thickening agent to obtain a third intermediate system;
and fourthly, mixing the third intermediate system, the ultraviolet absorber and the residual water to obtain the aqueous reflective heat-insulating dyed mortar.
According to the invention, part of water, an ammonium salt dispersant and an organic silicon defoamer are subjected to first mixing to obtain a first intermediate system.
According to the invention, part of water, an ammonium salt dispersant and an organic silicon defoamer are subjected to first mixing to obtain a first intermediate system. In the invention, the mass content of the part of water is preferably 15-25%, and more preferably 18-20% based on 100% of the total mass of the aqueous reflective heat-insulating sand-dyeing slurry. In the invention, the first mixing is preferably carried out under stirring conditions, and the rotation speed of the stirring is preferably 3-5 m/s.
After the first intermediate system is obtained, the first intermediate system and the silicon-aluminum coated modified nano titanium dioxide are subjected to second mixing to obtain a second intermediate system. In the invention, the second mixing is preferably carried out under the stirring condition, and the stirring rotating speed is preferably 8-10 m/s; the time of the second mixing is preferably 30-40 min.
After a second intermediate system is obtained, the second intermediate system, the modified acrylic emulsion, the preservative, the mineral oil defoaming agent, the ASE thickening agent and the PU thickening agent are subjected to third mixing to obtain a third intermediate system. In the invention, the third mixing is preferably carried out under stirring conditions, and the rotation speed of the stirring is preferably 2-3 m/s. In the present invention, the order of addition when the third mixing is performed is preferably: and sequentially adding a modified acrylic emulsion, a preservative, a mineral oil defoaming agent, an ASE thickening agent and a PU thickening agent into the second intermediate system.
In the present invention, the viscosity of the third intermediate system is preferably 20000 to 40000mpa · s, and more preferably 25000 to 35000mpa · s.
And after a third intermediate system is obtained, carrying out fourth mixing on the third intermediate system, the ultraviolet light absorber and the residual water to obtain the aqueous reflective heat-insulating dyed mortar. The process parameters of the fourth mixing are not particularly required, and the conventional mixing mode in the field is adopted.
According to the invention, preferably, after the fourth mixing, the obtained system is filtered to obtain the aqueous reflective heat-insulating dyed mortar. The invention removes impurities by filtration.
The invention also provides the application of the water-based reflective insulation dyed mortar material in the technical scheme or the water-based reflective insulation dyed mortar material prepared by the preparation method in the technical scheme in the preparation of dyed sand.
The invention also provides a preparation method of the dyed sand, which comprises the following steps:
mixing the white slurry and the color paste to obtain colored paint; the white slurry is the aqueous reflective heat-insulating dyed mortar material prepared by the preparation method in the technical scheme or the aqueous reflective heat-insulating dyed mortar material prepared by the preparation method in the technical scheme;
and mixing the colored paint, a curing agent and white sand, and dyeing to obtain dyed sand.
The invention mixes the white slurry and the color paste to obtain the colored paint. In the invention, the color paste preferably comprises one or more of cold red color paste, cold yellow color paste and cold black color paste. In the invention, the mass concentration of the color paste is preferably 40-65%, and more preferably 50-60%. In a specific embodiment of the invention, when the color paste is a mixed color paste of a cold red color paste, a cold yellow color paste and a cold black color paste, the mass ratio of the cold red color paste to the cold yellow color paste to the cold black color paste is 0.4: 0.2: 0.4.
in the invention, the mass ratio of the white slurry to the color paste is determined according to the color requirement of the dyed sand. In the specific embodiment of the invention, the mass ratio of the white slurry to the color paste is 10: 1.
After obtaining the colored paint, the curing agent and the white sand are mixed and dyed to obtain the dyed sand. In the present invention, the curing agent is preferably an inorganic crosslinking curing agent, and the manufacturer is Shanghai rime leaf, model number RS-0569. Inorganic matters with ultrafine particle sizes in the inorganic crosslinking curing agent adopted by the invention can permeate into the white sand, so that the cured paint film has super strong adhesive force, the paint film is more firmly adhered with colors, the mechanical stability is strong, and the paint film is not easy to be ground by a machine and decolored in the application process.
In the invention, the mass ratio of the colored paint to the curing agent is preferably 10: 1-1.5, and more preferably 10: 1.
In the invention, the grain size of the white sand is preferably 40-120 meshes, and more preferably 80-100 meshes. In the invention, the mass ratio of the colored paint to the white sand is preferably 2.2-3.0: 100, more preferably 2.5: 100.
in the invention, the dyeing temperature is preferably 80-120 ℃, and more preferably 90-100 ℃; the heat preservation time is preferably 8-15 min, and more preferably 10-12 min. In the present invention, the dyeing is preferably carried out in a drying drum; and materials are rolled in the dyeing process.
According to the invention, preferably, after the dyeing, the obtained colored sand is cooled for 24 hours to obtain the dyed sand.
According to the invention, the silicon-aluminum coated modified nano titanium dioxide is used as the pigment, so that the high-reflection and low-temperature performance is realized under the condition of achieving the same color of the conventional pigment, the barrier of the original white requirement is broken through, and the selectivity of the multi-color of the roof and the outer wall is given. And the reasonable system is matched to endow the system with synergistic effects of water resistance, corrosion resistance, energy conservation and the like, and the system is applied to different base planes.
According to the invention, the organic matter (modified acrylic emulsion) in the dyed mortar material is crosslinked and cured by adopting a crosslinking and curing technology of organic and inorganic compounding, and the inorganic matter with super-strong weather resistance can obviously improve the weather resistance of a paint film obtained by crosslinking and film forming while ensuring that the organic matter forms a film better.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The starting materials used in the following examples and comparative examples:
the ammonium salt dispersant is BASF H-5040 dispersant;
the organic silicon defoaming agent is Tego 825 defoaming agent;
the silicon-aluminum coated modified nano titanium dioxide is RS-P269 sold by Sonce leaves in Shanghai;
the inorganic crosslinking curing agent is RS-0569 sold by Sonchus maritima;
the modified acrylic emulsion is RS-6000B emulsion sold by Song leaves;
the preservative is 415M preservative sold by new Haichuan material;
the mineral oil antifoaming agent is BASFA10 antifoaming agent;
the ASE thickening agent is ASE 1130H thickening agent sold by ristida;
the PU thickener is DOW RM-8WPU thickener;
the ultraviolet light absorber is Tinuvin326 sold by Basff;
example 1
18g of water, 0.6g of ammonium salt dispersant and 0.2g of organic silicon defoamer are put into a material cylinder, 30g of silicon-aluminum coated modified nano titanium dioxide is put into the material cylinder at the speed of 4m/s, the material is dispersed for 35min at the speed of 9m/s after the material is put into the material cylinder, the speed is reduced to 2.5m/s, 40g of modified acrylic emulsion, 0.2g of preservative, 0.2g of mineral oil defoamer, 0.3g of ASE thickener and 0.5g of PU thickener are added to thicken to the viscosity of 25000-35000 mpa.s, 0.2g of ultraviolet absorber is added, the mixture is stirred uniformly, the water is supplemented to 100g finally, and the water-based reflective heat-insulating sand slurry is obtained after filtering.
The viscosity of the aqueous reflective thermal insulation sand-dyeing slurry prepared in the embodiment is 15500mpa & s, and the detection conditions are as follows: 6 rev viscosity, 4# rotor, 25 ℃.
Application example 1
Mixing the aqueous reflective heat-insulation dyed mortar material (white slurry) prepared in the embodiment 1 with cold red slurry, cold yellow slurry and cold black slurry respectively, wherein the mass ratio of the white slurry to the color slurry is 10:1, and obtaining colored paint; mixing the colored paint, the inorganic crosslinking curing agent and the white sand with the average particle size of 60 meshes, wherein the mass ratio of the colored paint to the inorganic crosslinking curing agent to the white sand is 2.5:0.25:100, putting the mixture into a drying roller at 90 ℃, rolling the mixture for 10min, taking the mixture out, cooling the mixture for 24h to obtain dyed sand, and testing various properties as shown in table 1.
Example 2
Putting 18g of water, 0.6g of ammonium salt dispersant and 0.2g of organic silicon defoamer into a material cylinder, putting 8g of silicon-aluminum coated modified nano titanium dioxide at the speed of 4m/s, dispersing for 35min at the speed of 9m/s after the material is put, reducing the speed to 2.5m/s, adding 45g of modified acrylic emulsion, 0.2g of preservative, 0.2g of mineral oil defoamer, finally 0.5g of ASE thickener and 0.4g of PU thickener, thickening to the viscosity of 25000-35000 mpa.s, adding 0.2g of ultraviolet absorber, stirring uniformly, finally supplementing 100g of water, and filtering to obtain the aqueous reflective heat-insulating sand slurry.
The viscosity of the aqueous reflective thermal insulation dyed mortar prepared in the embodiment is 20500mpa · s, and the detection conditions are as follows: 6 rev viscosity, 4# rotor, 25 ℃.
Application example 2
Mixing the cold red paste, the cold yellow paste and the cold black paste according to the ratio of 0.4: 0.2: mixing according to the mass ratio of 0.4 to obtain mixed color paste; mixing the aqueous reflective heat-insulation dyed mortar material (white slurry) prepared in the embodiment 2 with mixed color paste, wherein the mass ratio of the white slurry to the mixed color paste is 10:1, so as to obtain colored paint; mixing the colored paint, the inorganic crosslinking curing agent and the white sand with the average particle size of 100 meshes, wherein the mass ratio of the colored paint to the inorganic crosslinking curing agent to the white sand is 2.5:0.25:100, putting the mixture into a drying roller at 90 ℃, rolling the mixture for 10min, taking the mixture out, cooling the mixture overnight for 24h to obtain dyed sand, and testing various properties as shown in table 1.
TABLE 1 Properties of dyed sands prepared in application examples 1-2
Comparative example 1 solvent-borne slurry
Putting 48.8g of three-wood resin with the model number of 965 into a stirring cylinder, putting 28.6g of coarse whiting with the particle size of 800 meshes and 10g of silicon-aluminum coated modified nano titanium dioxide into the stirring cylinder at the speed of 4m/s, dispersing for 35min at the speed of 9m/s after the feeding is finished, reducing the speed to 2.5m/s, adding 5.6g of ethyl acetate and 7g of dimethylbenzene, and uniformly stirring to obtain the solvent-based reflective heat-insulating white slurry.
Comparative application example 1
Mixing the cold red paste, the cold yellow paste and the cold black paste according to the ratio of 0.4: 0.2: mixing according to the mass ratio of 0.4 to obtain mixed color paste; mixing the solvent reflective heat-insulation white slurry prepared in the comparative example 1 with mixed color paste, wherein the mass ratio of the white slurry to the mixed color paste is 10:1, and obtaining colored paint; mixing the colored paint, an organic crosslinking curing agent (model is Sanmu N75) and white sand with the average particle size of 60 meshes, wherein the mass ratio of the colored paint to the organic crosslinking curing agent to the white sand is 2.14: 0.46: 97.4, putting the mixture into a drying oven with a temperature of 35 ℃ for rolling and drying for 8min, taking out the mixture and cooling the mixture overnight for 24h to obtain the dyed sand.
Comparative application example 2
Mixing the cold red paste, the cold yellow paste and the cold black paste according to the ratio of 0.4: 0.2: mixing according to the mass ratio of 0.4 to obtain mixed color paste; mixing the solvent reflective heat-insulation white slurry prepared in the comparative example 1 with mixed color paste, wherein the mass ratio of the white slurry to the mixed color paste is 10:1, and obtaining colored paint; mixing the colored paint, an organic crosslinking curing agent (model is Sanmu N75) and white sand with the average particle size of 100 meshes, wherein the mass ratio of the colored paint to the organic crosslinking curing agent to the white sand is 2.14: 0.46: 97.4, putting the mixture into a drying oven with a temperature of 35 ℃ for rolling and drying for 8min, taking out the mixture and cooling the mixture overnight for 24h to obtain the dyed sand.
The wet-milling colorfastness (2000rpm 2h) of the dyed sands prepared in application examples 1-2 and comparative application examples 1-2 were compared with the color difference Δ E, as shown in Table 2.
TABLE 2 Wet-milling color fastness of the dyed sands prepared in application examples 1-2 and comparative application examples 1-2
Comparing the UV aging color fastness of the dyed sands prepared in application examples 1-2 and comparative application examples 1-2, the aging condition UVA340 is aging for 60 days, and the blue wool changes color by 7 grades, and the results are shown in Table 3.
TABLE 3 UV aging color fastness of the dyed sands prepared in application examples 1-2 and comparative application examples 1-2
As can be seen from tables 2-3, the dyed sand provided by the invention is superior to solvent type dyed sand in the aspects of wet film color fastness, UV aging color fastness, environmental protection and the like, and the water-based dyed sand is more suitable for popularization and application.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The water-based reflective heat-insulation sand-dyeing slurry is characterized by comprising, by mass, 0.5-1.0% of an ammonium salt dispersant, 0.1-0.5% of an organic silicon defoaming agent, 5-40% of silicon-aluminum coated modified nano titanium dioxide, 35-45% of a modified acrylic emulsion, 0.2-0.5% of a preservative, 0.2-0.5% of a mineral oil defoaming agent, 0.3-0.5% of an ASE thickening agent, 0.3-0.5% of a PU thickening agent, 0.1-0.3% of an ultraviolet absorber and the balance of water.
2. The aqueous reflective insulation sand-dyeing slurry as claimed in claim 1, wherein the average particle size of the silicon-aluminum coated modified nano titanium dioxide is 700 nm.
3. The water-based reflective insulation sand-dyeing slurry according to claim 1 or 2, wherein the silicon-aluminum coating modified nano titanium dioxide comprises nano titanium dioxide and a silicon-aluminum coating coated on the surface of the nano titanium dioxide; the coating mass content of the silicon-aluminum coating is 4.1-6.2%.
4. The aqueous reflective insulation sand-dyeing slurry according to claim 1, characterized in that the modified acrylic emulsion is an organosilicon modified acrylic emulsion.
5. The preparation method of the water-based reflective heat-insulating sand-dyeing slurry as claimed in any one of claims 1 to 4, which comprises the following steps:
performing first mixing on part of water, an ammonium salt dispersant and an organic silicon defoaming agent to obtain a first intermediate system;
carrying out second mixing on the first intermediate system and the silicon-aluminum coated modified nano titanium dioxide to obtain a second intermediate system;
thirdly mixing the second intermediate system with the modified acrylic emulsion, the preservative, the mineral oil defoaming agent, the ASE thickening agent and the PU thickening agent to obtain a third intermediate system;
and fourthly, mixing the third intermediate system, the ultraviolet absorber and the residual water to obtain the aqueous reflective heat-insulating dyed mortar.
6. Use of the aqueous reflective insulation sand-dyeing slurry as defined in any one of claims 1 to 4 or the aqueous reflective insulation sand-dyeing slurry prepared by the preparation method as defined in claim 5 in the preparation of dyed sand.
7. The preparation method of the dyed sand is characterized by comprising the following steps:
mixing the white slurry and the color paste to obtain colored paint; the white slurry is the aqueous reflective heat insulation sand-dyeing slurry of any one of claims 1 to 4 or the aqueous reflective heat insulation sand-dyeing slurry prepared by the preparation method of claim 5;
and mixing the colored paint, a curing agent and white sand, and dyeing to obtain dyed sand.
8. The method of claim 7, wherein the color paste comprises a cold red color paste, a cold yellow color paste, or a cold black color paste.
9. The method according to claim 7, wherein the curing agent is an inorganic crosslinking curing agent.
10. The preparation method according to claim 7, wherein the dyeing temperature is 80-120 ℃ and the holding time is 8-15 min.
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| CN114806301A (en) * | 2022-05-27 | 2022-07-29 | 广东标达新材料有限公司 | Color fixing agent for artificial colored sand, preparation method of color fixing agent and artificial colored sand |
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