CN113416461A - Natural stone imitated stain-resistant water permeable brick and preparation method thereof - Google Patents
Natural stone imitated stain-resistant water permeable brick and preparation method thereof Download PDFInfo
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- CN113416461A CN113416461A CN202110912800.0A CN202110912800A CN113416461A CN 113416461 A CN113416461 A CN 113416461A CN 202110912800 A CN202110912800 A CN 202110912800A CN 113416461 A CN113416461 A CN 113416461A
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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
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The application relates to a natural stone imitated stain-resistant water permeable brick and a preparation method thereof; a natural stone-like stain-resistant water permeable brick comprises a brick body coated with a stone-like coating on the surface; the stone-like coating comprises the following raw materials in parts by weight: 20-30 parts of phenolic resin powder; 10-14 parts of fluorocarbon emulsion; 6-8 parts of polylactic acid; 4-5 parts of modified magnesium aluminum hydrotalcite; 3-4 parts of 2-methoxyethyl acetate; 8-9 parts of an inorganic pigment; 5-7 parts of deionized water; 1-2 parts of a film-forming assistant; a preparation method of natural stone-like stain-resistant water permeable brick comprises preparing stone-like coating; preparing a brick body; and spraying the stone-like coating to finally obtain the stone-like water permeable brick. The application adopts the pollution-resistant stone-like coating mixed by phenolic resin powder and fluorocarbon emulsion; the particles of the modified magnesium-aluminum hydrotalcite improve the regularity and the surface smoothness of the coating, increase the contact angle between a pollution source and the coating, and form a uniform physical network structure by mixing with polylactic acid, so that pollutants are not easy to stick, and the pollution resistance of the water permeable brick is improved.
Description
Technical Field
The application relates to the technical field of water permeable bricks, in particular to a natural stone imitated stain-resistant water permeable brick and a preparation method thereof.
Background
The water permeable brick is a new environment-friendly building material product which is produced for solving the problem of hardening of the surface of the city, creating a high-quality natural living environment and maintaining the ecological balance of the city. Due to the structural characteristics of high water permeability and high porosity, on one hand, the water accumulation on the road surface is eliminated, underground water resources are supplemented in time, the foundation subsidence is reduced, and the pressure of urban flood fighting drainage and pipeline dredging is relieved; on the other hand, the water in the inner hole of the brick is evaporated, so that the heat energy absorption and the heat island effect of the bottom surface of the city are reduced, and the noise pollution of the city is effectively reduced.
The pursuit of the quality of the water permeable bricks is still the direction pursued by researchers for the application of water permeable building materials, and the pollution resistance of the existing water permeable bricks is still to be improved.
Disclosure of Invention
In order to improve the stain resistance of the water permeable brick, the application provides a stain resistant water permeable brick imitating natural stone and a preparation method thereof.
In a first aspect, the application provides a natural stone-like stain-resistant water-permeable brick which adopts the following technical scheme:
a natural stone-like stain-resistant water permeable brick comprises a brick body coated with a stone-like coating on the surface; the stone-like coating comprises the following raw materials in parts by weight:
20-30 parts of phenolic resin powder;
10-14 parts of fluorocarbon emulsion;
6-8 parts of polylactic acid;
4-5 parts of modified magnesium aluminum hydrotalcite;
3-4 parts of 2-methoxyethyl acetate;
8-9 parts of an inorganic pigment;
5-7 parts of deionized water;
1-2 parts of a film-forming aid.
By adopting the technical scheme, the main components of the stone-like coating are composed of the phenolic resin powder and the fluorocarbon emulsion, and the obtained stone-like coating has the advantages of durability, pollution resistance, corrosion resistance and the like; the particle size distribution of the modified magnesium-aluminum hydrotalcite is uniform, the shape of the modified magnesium-aluminum hydrotalcite is regular, the modified magnesium-aluminum hydrotalcite is not easy to agglomerate, the regularity and the surface smoothness of a coating are improved, the contact angle between a pollution source and the coating is increased, and pollutants are not easy to stick; the polylactic acid is mixed with the modified magnalium hydrotalcite, the polylactic acid has the adhesion property, so that the polylactic acid resin and the modified magnalium hydrotalcite can form a unified whole, and the organic group of the polylactic acid increases the compatibility between the modified magnalium hydrotalcite and other components, thereby being beneficial to forming a physical network structure, improving the connection strength and density of the whole coating formed by the stone-like coating, and leading pollutants to be less prone to be attached; meanwhile, the 2-methoxyethyl acetate and the resin have good compatibility, and the compatibility among the components is increased in an auxiliary manner, and meanwhile, certain fluidity can be kept, so that the obtained stone-like coating can be uniformly coated on a brick body, and the structure of the coating after curing is more compact, so that the water permeable brick is not easy to be polluted by a pollution source and the pollution resistance is improved.
Preferably, the preparation method of the modified magnesium-aluminum hydrotalcite is as follows: adding 15-18 parts of deionized water into 12-15 parts of magnesium-aluminum hydrotalcite, adding 4-6% of lauryl alcohol ether phosphate ester in parts by weight of magnesium-aluminum hydrotalcite, stirring at 40-50 ℃ for 40-50min, finally adding 2-4 parts of hydroxyethyl methacrylate, and continuing stirring for 2-3 h; and (4) carrying out suction filtration on the obtained precipitate, and drying a filter cake at the temperature of 80 ℃ to obtain the modified magnesium-aluminum hydrotalcite.
By adopting the technical scheme, after the modified magnesium-aluminum hydrotalcite is modified, the organic functional group replaces non-bridging hydroxyl on the surface of the magnesium-aluminum hydrotalcite or is adsorbed on the surface of the magnesium-aluminum hydrotalcite, so that surface organization is realized, and the uniform blending property of the modified magnesium-aluminum hydrotalcite and polylactic acid is improved; the addition of hydroxyethyl methacrylate can also improve the viscosity of the modified magnesium-aluminum hydrotalcite to a certain extent, so that the bonding strength of the modified magnesium-aluminum hydrotalcite and the polylactic acid is higher, and the bonding is more stable; meanwhile, the property of easy penetration of hydroxyethyl methacrylate is utilized to improve the affinity of the modified magnesium aluminum hydrotalcite and other components of the stone-like coating, and the adhesion effect of the coating on a brick body is improved.
Preferably, the laureth phosphate accounts for 5% of the magnesium-aluminum hydrotalcite in parts by weight.
By adopting the technical scheme, when the lauryl alcohol ether phosphate accounts for 5% of the weight of the magnesium-aluminum hydrotalcite, the surface flattening degree of the modified magnesium-aluminum hydrotalcite can be better increased, the surface modification effect is improved, the surface energy is reduced, and the stone-like coating mixed with the modified magnesium-aluminum hydrotalcite is not easy to attach pollutants, so that the stain resistance of the water permeable brick is improved.
Preferably, the hydroxyethyl methacrylate accounts for 25 weight parts of the magnesium-aluminum hydrotalcite.
By adopting the technical scheme, the addition of a proper amount of hydroxyethyl methacrylate can improve the bonding degree and avoid the problem that the compatibility among components and the dispersibility of the coating are influenced by overlarge addition amount.
Preferably, the raw material of the stone-like coating also comprises 5-6 parts by weight of myristicin acid.
By adopting the technical scheme, the addition of the myristoleic acid and the phenolic resin powder generate a synergistic effect, so that the phenolic resin powder is uniformly dispersed in the myristoleic acid to form a mixture of the myristoleic acid and the phenolic resin powder on the molecular level, the phenolic resin powder of a continuous phase is converted into a dispersed phase, and the dispersed phase is mixed with the phenolic resin powder and then mutually permeated to form a mixture.
Preferably, the brick body comprises the following components in parts by weight:
15-20 parts of cement;
6-7 parts of quartz sand;
2-3 parts of light calcium carbonate;
1-2 parts of a water penetrating agent;
4-5 parts of water.
In a second aspect, the application provides a preparation method of the natural stone imitated stain-resistant water permeable brick, which adopts the following technical scheme:
a preparation method of natural stone imitated stain resistant water permeable bricks comprises the following steps:
s1, preparing a stone-like coating; mixing phenolic resin powder and fluorocarbon emulsion, and stirring for 10-15min to obtain main component; then mixing and stirring the 2-methoxyethyl acetate and the modified magnesium aluminum hydrotalcite, adding polylactic acid, heating to 20-30 ℃, stirring for 25-30min, and grinding for 30-40min in a sand mill; adding the main component, and stirring for 40-50 min; adding inorganic pigment and film-forming additive, and finally adding deionized water, mixing and stirring for 10-15min to adjust viscosity, thereby obtaining the stone-like coating;
s2, preparing a brick body; mixing 15-20 parts of cement, 6-7 parts of quartz sand, 2-3 parts of light calcium carbonate, 1-2 parts of water penetrating agent and 4-5 parts of water, stirring at the speed of 60r/min for 20-30min, then placing in a mold, and pressing into a blank body by using the pressure of 20 MPa; taking the blank out of the mold and drying the blank at 170 ℃ for 1 h; finally, placing the brick in a muffle furnace for reaction for 5 hours, and finally slowly cooling the brick to room temperature to obtain a brick body;
s3, spraying stone-like paint; uniformly spraying the stone-like coating on the surface of the brick body by using a high-pressure spray gun, wherein the spraying air pressure is 0.5-0.6MPa, the distance between the spray gun nozzle and the surface of the permeable brick matrix is 10-15cm, the spraying is carried out for 2-3 times, the interval is 10-20min each time, and the thickness is 40-60 mu m; airing at room temperature for 3-4h, and finally drying at 40-50 ℃ for 12h to obtain the stone-like water permeable brick.
Preferably, the S1 further includes the following steps: firstly, 5-6 parts of myristicin acid and 20-30 parts of phenolic resin powder are mixed, stirred for 7-8min at the rotating speed of 35-40r/min, and then mixed with 10-14 parts of fluorocarbon emulsion.
To sum up, the application comprises the following beneficial technical effects:
1. the phenolic resin powder and the fluorocarbon emulsion form the main components of the stone-like coating, and the obtained stone-like coating has the advantages of durability, pollution resistance, corrosion resistance and the like; the particles of the modified magnesium-aluminum hydrotalcite can improve the regularity and the surface smoothness of the coating, increase the contact angle between a pollution source and the coating, and form a unified whole by being mixed with polylactic acid with adhesiveness, thereby being beneficial to forming a physical network structure and preventing pollutants from being sticky; 2-methoxyethyl acetate improves the compatibility of components and keeps certain fluidity, so that the obtained stone-like coating can be uniformly coated on a brick body, and the structure of the coating after curing is more compact, thereby ensuring that the permeable brick is not easy to be polluted by the immersion of a pollution source;
2. the addition of 5% of lauryl alcohol ether phosphate and 25% of hydroxyethyl methacrylate in parts by weight of the magnesium-aluminum hydrotalcite modifies the magnesium-aluminum hydrotalcite, so that the surface of the magnesium-aluminum hydrotalcite is organized, the uniform blending property of the modified magnesium-aluminum hydrotalcite and polylactic acid is improved, the bonding strength with the polylactic acid is improved, and the affinity with the other components of the stone-like coating can be improved;
3. the addition of the myristic acid generates a synergistic effect with the phenolic resin powder, the phenolic resin powder of a continuous phase is converted into a dispersed phase, the dispersed phase and the phenolic resin powder are mixed and mutually permeated to form a mixture, when a coating of the stone-like coating is cured, a stable compact structure is formed, meanwhile, the combination of the phenolic resin powder and fluorocarbon emulsion is promoted, the contact angle between a pollution source and the obtained coating is increased, pollutants are not easy to be sticky, the coating shows good stain resistance and weather resistance, and the prepared water permeable brick has excellent stain resistance.
Detailed Description
The present application is described in further detail below.
In the application, the phenolic resin powder is a type GS-water-soluble phenolic resin produced by Shandong Guangshi electronic technology Co., Ltd; the fluorocarbon emulsion is aqueous elastic fluorocarbon emulsion HT-116EF produced by Beijing Runbo Hengtong technology Limited; the polylactic acid is polylactic acid powder produced by Wuhan Haishan science and technology limited company; the film-forming auxiliary agent adopts Istman Optifilm 400; the light calcium carbonate is produced by Hebei red land mineral products, Inc., and has the fineness of 1250 meshes; the water permeable agent is produced by Enshiding building materials Co, North Hu, model number DDJC 020.
The raw materials used in the following embodiments may be those conventionally commercially available unless otherwise specified.
Examples
Example 1
The application discloses a natural stone imitated stain-resistant water permeable brick and a preparation method thereof; a natural stone-like stain-resistant water permeable brick comprises a brick body coated with a stone-like coating on the surface; the stone-like coating comprises the following raw materials: phenolic resin powder, fluorocarbon emulsion, polylactic acid, modified magnesium aluminum hydrotalcite, 2-methoxyethyl acetate, inorganic pigment, deionized water and a film forming auxiliary agent.
The preparation method of the modified magnesium-aluminum hydrotalcite comprises the following steps: adding 15 parts of deionized water into 12 parts of magnesium-aluminum hydrotalcite, adding 4% of lauryl alcohol ether phosphate ester in parts by weight of magnesium-aluminum hydrotalcite, stirring for 40 inches at 40 ℃, finally adding 2 parts of hydroxyethyl methacrylate, and continuing stirring for 2 hours; and (4) carrying out suction filtration on the obtained precipitate, and drying a filter cake at the temperature of 80 ℃ to obtain the modified magnesium-aluminum hydrotalcite.
The brick body comprises the following components: cement, quartz sand, light calcium carbonate, a water penetrating agent and water.
A preparation method of natural stone imitated stain resistant water permeable bricks comprises the following steps:
s1, preparing a stone-like coating; mixing phenolic resin powder and fluorocarbon emulsion, and stirring for 10min to obtain main component; then mixing and stirring the 2-methoxyethyl acetate and the modified magnesium aluminum hydrotalcite, adding polylactic acid, heating to 20 ℃, stirring for 25min, and grinding for 30min in a sand mill; adding the main components, and stirring for 40 min; adding inorganic pigment and film-forming additive, and finally adding deionized water, mixing and stirring for 10min to adjust viscosity, thereby obtaining the stone-like coating;
s2, preparing a brick body; mixing 15 parts of cement, 6 parts of quartz sand, 2 parts of light calcium carbonate, 1 part of water penetrating agent and 4 parts of water, stirring at the speed of 60r/min for 20min, then placing in a mold, and pressing into a green body by using the pressure of 20 MPa; taking the blank out of the mold and drying the blank at 170 ℃ for 1 h; finally, placing the brick in a muffle furnace for reaction for 5 hours, and finally slowly cooling the brick to room temperature to obtain a brick body;
s3, spraying stone-like paint; uniformly spraying the stone-like coating on the surface of the brick body by using a high-pressure spray gun, wherein the spraying air pressure is 0.5MPa, the distance between a spray gun nozzle and the surface of the permeable brick matrix is 10cm, and the spraying is carried out for 2 times, 10min is separated every time, and the thickness is 40 mu m; and (3) airing at room temperature for 3h, and finally drying at 40 ℃ for 12h to obtain the stone-like water permeable brick.
The contents of the components are shown in table 1 below.
Example 2
The application discloses a natural stone imitated stain-resistant water permeable brick and a preparation method thereof; a natural stone-like stain-resistant water permeable brick comprises a brick body coated with a stone-like coating on the surface; the stone-like coating comprises the following raw materials: phenolic resin powder, fluorocarbon emulsion, polylactic acid, modified magnesium aluminum hydrotalcite, 2-methoxyethyl acetate, inorganic pigment, deionized water and a film forming auxiliary agent.
The preparation method of the modified magnesium-aluminum hydrotalcite comprises the following steps: adding 18 parts of deionized water into 15 parts of magnesium-aluminum hydrotalcite, adding lauryl alcohol ether phosphate accounting for 6% of the weight of the magnesium-aluminum hydrotalcite, stirring for 50min at 50 ℃, finally adding 4 parts of hydroxyethyl methacrylate, and continuing stirring for 3 h; and (4) carrying out suction filtration on the obtained precipitate, and drying a filter cake at the temperature of 80 ℃ to obtain the modified magnesium-aluminum hydrotalcite.
The brick body comprises the following components: cement, quartz sand, light calcium carbonate, a water penetrating agent and water.
A preparation method of natural stone imitated stain resistant water permeable bricks comprises the following steps:
s1, preparing a stone-like coating; mixing and stirring the phenolic resin powder and the fluorocarbon emulsion for 15min to obtain a main component; then mixing and stirring the 2-methoxyethyl acetate and the modified magnesium aluminum hydrotalcite, adding polylactic acid, heating to 30 ℃, stirring for 30min, and grinding for 40min in a sand mill; adding the main component, and stirring for 50 min; adding inorganic pigment and film-forming additive, and finally adding deionized water, mixing and stirring for 15min to adjust viscosity, thereby obtaining the stone-like coating;
s2, preparing a brick body; mixing 20 parts of cement, 7 parts of quartz sand, 3 parts of light calcium carbonate, 2 parts of a water penetrating agent and 5 parts of water, stirring at the speed of 60r/min for 30min, then placing in a mold, and pressing into a blank by using the pressure of 20 MPa; taking the blank out of the mold and drying the blank at 170 ℃ for 1 h; finally, placing the brick in a muffle furnace for reaction for 5 hours, and finally slowly cooling the brick to room temperature to obtain a brick body;
s3, spraying stone-like paint; uniformly spraying the stone-like coating on the surface of the brick body by using a high-pressure spray gun, wherein the spraying air pressure is 0.6MPa, the distance between a spray gun nozzle and the surface of the permeable brick matrix is 15cm, the spraying is carried out for 3 times, the interval is 20min each time, and the thickness is 60 mu m; and (3) airing at room temperature for 4h, and finally drying at 50 ℃ for 12h to obtain the stone-like water permeable brick.
The contents of the components are shown in table 1 below.
Example 3
The application discloses a natural stone imitated stain-resistant water permeable brick and a preparation method thereof; a natural stone-like stain-resistant water permeable brick comprises a brick body coated with a stone-like coating on the surface; the stone-like coating comprises the following raw materials: phenolic resin powder, fluorocarbon emulsion, polylactic acid, modified magnesium aluminum hydrotalcite, 2-methoxyethyl acetate, inorganic pigment, deionized water and a film forming auxiliary agent.
The preparation method of the modified magnesium-aluminum hydrotalcite comprises the following steps: adding 16 parts of deionized water into 14 parts of magnesium-aluminum hydrotalcite, adding 4.5 wt% of lauryl alcohol ether phosphate ester in the magnesium-aluminum hydrotalcite, stirring at 45 ℃ for 45min, finally adding 3 parts of hydroxyethyl methacrylate, and continuing stirring for 3 h; and (4) carrying out suction filtration on the obtained precipitate, and drying a filter cake at the temperature of 80 ℃ to obtain the modified magnesium-aluminum hydrotalcite.
The brick body comprises the following components: cement, quartz sand, light calcium carbonate, a water penetrating agent and water.
A preparation method of natural stone imitated stain resistant water permeable bricks comprises the following steps:
s1, preparing a stone-like coating; mixing and stirring the phenolic resin powder and the fluorocarbon emulsion for 12min to obtain a main component; then mixing and stirring the 2-methoxyethyl acetate and the modified magnesium aluminum hydrotalcite, adding polylactic acid, heating to 25 ℃, stirring for 28min, and grinding for 35min in a sand mill; adding the main component, and stirring for 45 min; adding inorganic pigment and film-forming additive, and finally adding deionized water, mixing and stirring for 13min to adjust viscosity, thereby obtaining the stone-like coating;
s2, preparing a brick body; mixing 18 parts of cement, 2 parts of quartz sand, 2 parts of light calcium carbonate, 2 parts of water penetrating agent and 4 parts of water, stirring at the speed of 60r/min for 25min, then placing in a mold, and pressing into a blank body by using the pressure of 20 MPa; taking the blank out of the mold and drying the blank at 170 ℃ for 1 h; finally, placing the brick in a muffle furnace for reaction for 5 hours, and finally slowly cooling the brick to room temperature to obtain a brick body;
s3, spraying stone-like paint; uniformly spraying the stone-like coating on the surface of the brick body by using a high-pressure spray gun, wherein the spraying air pressure is 0.6MPa, the distance between a spray gun nozzle and the surface of the permeable brick matrix is 12cm, the spraying is carried out for 3 times, the interval is 15min each time, and the thickness is 50 mu m; and (3) airing at room temperature for 3-4h, and finally drying at 45 ℃ for 12h to obtain the stone-like water permeable brick.
The contents of the components are shown in table 1 below.
Example 4
The difference from the example 1 is that the raw material of the stone-like paint further comprises myristic acid; s1 further includes the steps of: firstly, the myristicin acid and the phenolic resin powder are mixed, stirred for 7min at the rotating speed of 35r/min, and then mixed with the fluorocarbon emulsion and stirred for 10min, so as to obtain the main component.
The contents of the components are shown in table 1 below.
Example 5
The difference from the example 2 is that the raw material of the stone-like coating also comprises myristic acid; s1 further includes the steps of: firstly, the myristicin acid and the phenolic resin powder are mixed, stirred for 8min at the rotating speed of 40r/min, and then mixed with the fluorocarbon emulsion and stirred for 15min, so as to obtain the main component.
The contents of the components are shown in table 1 below.
Example 6
The difference from example 3 is that the raw material of the stone-like paint further includes myristic acid; s1 further includes the steps of: firstly, the myristicin acid and the phenolic resin powder are mixed, stirred for 8min at the rotating speed of 38r/min, and then mixed with the fluorocarbon emulsion and stirred for 13min, so as to obtain the main component.
The contents of the components are shown in table 1 below.
Example 7
The difference from the example 3 is that in the components of the modified magnesium-aluminum hydrotalcite, the lauryl alcohol ether phosphate accounts for 5 weight parts of the magnesium-aluminum hydrotalcite, and the content of each component of the modified magnesium-aluminum hydrotalcite is shown in the following table 2.
Example 8
The difference from the example 3 is that in the components of the modified magnesium-aluminum hydrotalcite, hydroxyethyl methacrylate accounts for 25 weight parts of the magnesium-aluminum hydrotalcite, and the content of each component of the modified magnesium-aluminum hydrotalcite is shown in the following table 2.
Example 9
The difference from example 3 is that in the components of the modified magnesium-aluminum hydrotalcite, the lauryl alcohol ether phosphate accounts for 5 weight parts of the magnesium-aluminum hydrotalcite, the hydroxyethyl methacrylate accounts for 25 weight parts of the magnesium-aluminum hydrotalcite, and the content of each component of the modified magnesium-aluminum hydrotalcite is shown in table 2 below.
Example 10
The difference from example 4 is that myristic acid is replaced by ethyl acetate and the content of each component is shown in table 1 below.
Comparative example
Comparative example 1
Example 1, publication No. CN106518005A, was used as comparative example 1.
Comparative example 2
The difference from example 1 is that modified magnesium aluminum hydrotalcite is replaced by magnesium aluminum hydrotalcite, and the content of each component is shown in table 3 below.
Comparative example 3
The difference from example 1 is that the modified magnesium aluminum hydrotalcite is replaced by magnesium aluminum hydrotalcite modified with 5% sodium stearate based on the weight of magnesium aluminum hydrotalcite.
Comparative example 4
The difference from example 1 is that the laureth phosphate is replaced by a polyglycol ether.
Comparative example 5
The difference from example 1 is that hydroxyethyl methacrylate is replaced by ethyl formate.
Comparative example 6
The difference from example 1 is that polylactic acid is replaced with polycarbonate, and the contents of the respective components are shown in table 3 below.
Comparative example 7
The difference from example 1 is that 2-methoxyethyl acetate was replaced with ethanol and the contents of the components are shown in Table 3 below.
Comparative example 8
The difference from example 4 is that the phenolic resin powder was replaced with epoxy resin powder, and the contents of the respective components are shown in table 3 below.
Comparative example 9
The difference from example 1 is that the fluorocarbon emulsion is changed to polyurethane emulsion, and the content of each component is shown in table 3 below.
Comparative example 10
The difference from example 1 is that the phenolic resin powder was replaced with epoxy resin powder, and the contents of the respective components are shown in table 3 below.
TABLE 1 ingredient content tables for examples 1-6 and example 10
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 10 | |
| Phenolic resin powder | 20 | 30 | 25 | 20 | 30 | 25 | 20 |
| Fluorocarbon emulsion | 10 | 14 | 13 | 10 | 14 | 13 | 10 |
| Polylactic acid | 6 | 8 | 7 | 6 | 8 | 7 | 6 |
| Modified magnesium aluminum hydrotalcite | 4 | 5 | 5 | 4 | 5 | 5 | 4 |
| 2-methoxyethyl acetate | 3 | 4 | 3 | 3 | 4 | 3 | 3 |
| Inorganic pigments | 8 | 9 | 8 | 8 | 9 | 8 | 8 |
| Deionized water | 5 | 7 | 6 | 5 | 7 | 6 | 5 |
| Film forming aid | 1 | 2 | 2 | 1 | 2 | 2 | 1 |
| Myristicin acid/ethyl acetate | / | / | / | 5 | 6 | 6 | 5 |
Table 2 component content amounts of modified magnesium aluminum hydrotalcite of example 3 and examples 7-9
| Example 3 | Example 7 | Example 8 | Example 9 | |
| Magnesium aluminum hydrotalcite | 14 | 14 | 14 | 14 |
| Lauryl alcohol ether phosphate | 0.63 | 0.7 | 0.63 | 0.7 |
| Hydroxyethyl methacrylate | 3 | 3 | 3.5 | 3.5 |
TABLE 3 ingredient content tables for comparative example 2 and comparative examples 6 to 10
| Comparative example 2 | Comparative example 6 | Comparative example 7 | Comparative example 8 | Comparative example 9 | Comparative example 10 | |
| Phenolic resin powder/epoxy resin powder | 20 | 20 | 20 | 20 | 20 | 20 |
| Fluorocarbon emulsion/polyurethane emulsion | 10 | 10 | 10 | 10 | 10 | 10 |
| Polylactic acid/polycarbonate | 6 | 6 | 6 | 6 | 6 | 6 |
| Modified magnesium-aluminum hydrotalcite/magnesium-aluminum hydrotalcite | 4 | 4 | 4 | 4 | 4 | 4 |
| 2-methoxyethyl acetate/ethanol | 3 | 3 | 3 | 3 | 3 | 3 |
| Inorganic pigments | 8 | 8 | 8 | 8 | 8 | 8 |
| Deionized water | 5 | 5 | 5 | 5 | 5 | 5 |
| Film forming aid | 1 | 1 | 1 | 1 | 1 | 1 |
| Myristicin acid | / | / | / | 5 | / | / |
Performance test
The water permeable bricks of the examples and comparative examples were made into 40mm by 40mm test pieces.
The test method comprises the following steps: 1) testing a contact angle; using a dropper to take water with the same amount as possible, randomly titrating the water on the surface of a test piece at a vertical angle, immediately taking a photograph and sampling, measuring a contact angle on a photograph, and obtaining an average value (taking an integer as the average value) through 10 times of sampling measurement; the larger the contact angle, the lower the surface energy, and the more difficult it is for contaminants to adhere.
2) Testing the color of the residual ink; and (3) smearing ink on the surface of the test piece, wiping off the test piece by using a rag after 10min, washing the test piece by using water, and comparing the color depth of the residual ink to judge whether the antifouling performance is good or bad, wherein the lighter the residual color is, the better the antifouling performance is.
The test results are shown in table 4 below.
TABLE 4 table of results of performance test of each example and comparative example
| Contact angle (°) | Color of residual ink | |
| Example 1 | 90 | Light grey |
| Example 2 | 95 | No color |
| Example 3 | 93 | Light grey |
| Example 4 | 93 | Light grey |
| Example 5 | 98 | No color |
| Example 6 | 95 | No color |
| Example 7 | 89 | Light grey |
| Example 8 | 90 | Light grey |
| Example 9 | 96 | No color |
| Example 10 | 89 | Light grey |
| Comparative example 1 | 46 | Black color |
| Comparative example 2 | 80 | Dark grey |
| Comparative example 3 | 83 | Dark grey |
| Comparative example 4 | 86 | Dark grey |
| Comparative example 5 | 85 | Dark grey |
| Comparative example 6 | 88 | Light grey |
| Comparative example 7 | 87 | Dark grey |
| Comparative example 8 | 89 | Light grey |
| Comparative example 9 | 84 | Dark grey |
| Comparative example 10 | 85 | Dark grey |
In summary, the following conclusions can be drawn:
1. according to the examples 3 and 7-9 and the combination of table 4, when the lauryl alcohol ether phosphate ester accounts for 5 weight parts of the magnesium-aluminum hydrotalcite and the hydroxyethyl methacrylate accounts for 25 weight parts of the magnesium-aluminum hydrotalcite, the obtained modified magnesium-aluminum hydrotalcite has an excellent effect of improving the stone-like coating and improving the stain resistance of the water permeable brick.
2. According to the example 1 and the comparative example 1 and the combination of the table 4, the natural stone-like water permeable brick prepared by the technical scheme of the application has better stain resistance.
3. According to the embodiment 1 and the comparative examples 2-5 and the combination of the table 4, the application adopts the specially prepared modified magnesium aluminum hydrotalcite to better improve the stain resistance effect of the water permeable brick.
4. According to the example 1, the comparative example 3 and the comparative examples 6 to 7, and the table 4, the joint addition of the modified magnesium aluminum hydrotalcite, the polylactic acid and the 2-methoxyethyl acetate has a remarkable synergistic effect on the improvement of the stain resistance of the water permeable brick.
5. According to the examples 4, 10 and 8 and the table 4, it can be seen that the phenolic resin powder and the myristic acid have a good synergistic effect on improving the stain resistance effect of the water permeable brick.
6. According to the example 1, the comparative examples 9 to 10 and the combination of the table 4, the pollution resistance of the water permeable brick can be improved by adding the phenolic resin powder and the fluorocarbon emulsion together.
The present embodiment is only for explaining the present application, and the protection scope of the present application is not limited thereby, and those skilled in the art can make modifications to the present embodiment without inventive contribution as needed after reading the present specification, but all are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. A natural stone-like stain-resistant water permeable brick comprises a brick body coated with a stone-like coating on the surface; the method is characterized in that: the stone-like coating comprises the following raw materials in parts by weight:
20-30 parts of phenolic resin powder;
10-14 parts of fluorocarbon emulsion;
6-8 parts of polylactic acid;
4-5 parts of modified magnesium aluminum hydrotalcite;
3-4 parts of 2-methoxyethyl acetate;
8-9 parts of an inorganic pigment;
5-7 parts of deionized water;
1-2 parts of a film-forming aid.
2. The natural stone imitated stain-resistant water permeable brick as claimed in claim 1, wherein: the preparation method of the modified magnesium-aluminum hydrotalcite comprises the following steps: adding 15-18 parts of deionized water into 12-15 parts of magnesium-aluminum hydrotalcite, adding 4-6% of lauryl alcohol ether phosphate ester in parts by weight of magnesium-aluminum hydrotalcite, stirring at 40-50 ℃ for 40-50min, finally adding 2-4 parts of hydroxyethyl methacrylate, and continuing stirring for 2-3 h; and (4) carrying out suction filtration on the obtained precipitate, and drying a filter cake at the temperature of 80 ℃ to obtain the modified magnesium-aluminum hydrotalcite.
3. The natural stone imitated stain-resistant water permeable brick as claimed in claim 2, wherein: the lauryl alcohol ether phosphate accounts for 5% of the magnesium-aluminum hydrotalcite in parts by weight.
4. The natural stone imitated stain-resistant water permeable brick as claimed in claim 2, wherein: the hydroxyethyl methacrylate accounts for 25% of the magnesium-aluminum hydrotalcite in parts by weight.
5. The natural stone imitated stain-resistant water permeable brick as claimed in claim 1, wherein: the raw material of the stone-like coating also comprises 5-6 parts of myristicin acid by weight.
6. The natural stone imitated stain-resistant water permeable brick as claimed in claim 1, wherein: the brick body comprises the following components in parts by weight:
15-20 parts of cement;
6-7 parts of quartz sand;
2-3 parts of light calcium carbonate;
1-2 parts of a water penetrating agent;
4-5 parts of water.
7. The preparation method of the natural stone imitated stain-resistant water permeable brick as claimed in claim 1, characterized by comprising the following steps:
s1, preparing a stone-like coating; mixing phenolic resin powder and fluorocarbon emulsion, and stirring for 10-15min to obtain main component; then mixing and stirring the 2-methoxyethyl acetate and the modified magnesium aluminum hydrotalcite, adding polylactic acid, heating to 20-30 ℃, stirring for 25-30min, grinding for 30-40min in a sand mill, adding the main component, and continuously stirring for 40-50 min; adding inorganic pigment and film-forming additive, and finally adding deionized water, mixing and stirring for 10-15min to adjust viscosity, thereby obtaining the stone-like coating;
s2, preparing a brick body; mixing 15-20 parts of cement, 6-7 parts of quartz sand, 2-3 parts of light calcium carbonate, 1-2 parts of water penetrating agent and 4-5 parts of water, stirring at the speed of 60r/min for 20-30min, then placing in a mold, and pressing into a blank body by using the pressure of 20 MPa; taking the blank out of the mold and drying the blank at 170 ℃ for 1 h; finally, placing the brick in a muffle furnace for reaction for 5 hours, and finally slowly cooling the brick to room temperature to obtain a brick body;
s3, spraying stone-like paint; uniformly spraying the stone-like coating on the surface of the brick body by using a high-pressure spray gun, wherein the spraying air pressure is 0.5-0.6MPa, the distance between the spray gun nozzle and the surface of the permeable brick matrix is 10-15cm, the spraying is carried out for 2-3 times, the interval is 10-20min each time, and the thickness is 40-60 mu m; airing at room temperature for 3-4h, and finally drying at 40-50 ℃ for 12h to obtain the stone-like water permeable brick.
8. The method for preparing the natural stone imitated stain-resistant water permeable brick according to claim 7, wherein the method comprises the following steps: the S1 further includes the steps of: firstly, 5-6 parts of myristicin acid and 20-30 parts of phenolic resin powder are mixed, stirred for 7-8min at the rotating speed of 35-40r/min, and then mixed with 10-14 parts of fluorocarbon emulsion.
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| JPH11314978A (en) * | 1998-05-01 | 1999-11-16 | Nippon Hanekku:Kk | Rock |
| CN107324716A (en) * | 2017-06-12 | 2017-11-07 | 山东金艺节能建材有限公司 | A kind of resistant water-permeable brick of natural-like stone and preparation method thereof |
| CN109207067A (en) * | 2018-08-09 | 2019-01-15 | 江苏澜诺新材料科技有限公司 | A kind of preparation method of novel and multifunctional imitation stone coating |
| CN111138942A (en) * | 2019-12-30 | 2020-05-12 | 仁创生态环保科技股份有限公司 | Water-permeable coating and preparation method and application thereof |
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2021
- 2021-08-10 CN CN202110912800.0A patent/CN113416461B/en active Active
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| JPH11314978A (en) * | 1998-05-01 | 1999-11-16 | Nippon Hanekku:Kk | Rock |
| CN107324716A (en) * | 2017-06-12 | 2017-11-07 | 山东金艺节能建材有限公司 | A kind of resistant water-permeable brick of natural-like stone and preparation method thereof |
| CN109207067A (en) * | 2018-08-09 | 2019-01-15 | 江苏澜诺新材料科技有限公司 | A kind of preparation method of novel and multifunctional imitation stone coating |
| CN111138942A (en) * | 2019-12-30 | 2020-05-12 | 仁创生态环保科技股份有限公司 | Water-permeable coating and preparation method and application thereof |
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