CN116218314A - Water-based environment-friendly natural stone paint and preparation method thereof - Google Patents

Water-based environment-friendly natural stone paint and preparation method thereof Download PDF

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CN116218314A
CN116218314A CN202211711206.6A CN202211711206A CN116218314A CN 116218314 A CN116218314 A CN 116218314A CN 202211711206 A CN202211711206 A CN 202211711206A CN 116218314 A CN116218314 A CN 116218314A
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feed liquid
parts
mixing
emulsion
deionized water
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秦向辉
秦向阳
赵松方
周建梁
秦胜满
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Taizhou City Zhong Shan Coating Co ltd
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Taizhou City Zhong Shan Coating Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D151/00Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
    • C09D151/003Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10Esters
    • C08F220/12Esters of monohydric alcohols or phenols
    • C08F220/16Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
    • C08F220/18Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
    • C08F220/1804C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F265/00Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
    • C08F265/04Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
    • C08F265/06Polymerisation of acrylate or methacrylate esters on to polymers thereof
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/28Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for wrinkle, crackle, orange-peel, or similar decorative effects
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention relates to the technical field of stone paint, and particularly discloses water-based environment-friendly natural stone paint and a preparation method thereof, wherein the method comprises the following steps: (1): preparing coarse sand and fine sand from molybdenum ore waste stone; (2): soaking coarse sand and molybdenum tailings in a sodium hydroxide solution; (3): mixing deionized water, a defoaming agent, a film forming additive and core-shell type organic silicon modified styrene-acrylic emulsion to obtain a feed liquid A; (4): mixing deionized water and a dispersing agent, adding sepiolite, hollow glass beads, aluminum silicate fibers and silicon dioxide aerogel, and mixing to obtain a feed liquid B; (5): mixing the feed liquid A and the feed liquid B to obtain feed liquid C; (6): adding fine sand and molybdenum tailings into the feed liquid C to obtain feed liquid D; (7): adding coarse sand into the feed liquid D to obtain feed liquid E; (8): adding a defoaming agent, a mildew preventive, an antifreezing agent, a thickening agent and hydroxymethyl cellulose into the feed liquid E to obtain feed liquid F; (9): and (3) regulating the pH value of the feed liquid F to be neutral to obtain the real stone paint.

Description

Water-based environment-friendly natural stone paint and preparation method thereof
Technical Field
The invention relates to the technical field of stone paint, in particular to water-based environment-friendly natural stone paint and a preparation method thereof.
Background
The natural stone paint is mainly prepared from acrylic high polymer, natural colored stone sand and related auxiliary agents, can provide three-dimensional decorative effect and unique texture similar to natural stone for wall surfaces, has different patterns and colors, various line lattice designs, various three-dimensional pattern structures and the like, and has become the first choice substitute for dry hanging stone and ceramic tiles on outer walls and is highly accepted by the domestic building industry.
Although the real stone paint has excellent performance, the problems of fading and color change still occur under the condition that the sun surface is irradiated by sunlight for a long time, which is caused by the chemical characteristics of acrylic high molecular polymers in the real stone paint, and the real stone paint is increased in manufacturing cost due to the shortage of building sand supply and high price along with the rapid development of the building industry.
Disclosure of Invention
In order to solve the problems in the background art, the invention aims to provide the water-based environment-friendly natural stone paint and the preparation method thereof, so as to prepare the stone paint in a cheaper and easily available mode and provide the stone paint with higher performance.
In order to achieve the above object, the invention provides a preparation method of an aqueous environment-friendly natural stone paint, which comprises the following steps:
the method comprises the following steps:
(1): removing the waste molybdenum ore from the soil, crushing, and preparing coarse sand with 10-20 meshes and 20-40 meshes and fine sand with more than 40 meshes by a sand making machine;
(2): soaking coarse sand and molybdenum tailings obtained in the step (1) in 0.1% sodium hydroxide solution for 6-8 hours, and filtering;
(3): mixing 32.5-38.5 parts of deionized water, 1.3-1.8 parts of defoamer, 15-22 parts of film forming auxiliary agent and 295-320 parts of core-shell type organic silicon modified styrene-acrylic emulsion to obtain a feed liquid A;
(4): 97.5 to 116.5 parts of deionized water and 1.5 to 2.3 parts of dispersing agent are mixed, and then heat preservation functional filler is added in sequence: 72-82 parts of sepiolite, 75-87 parts of hollow glass beads, 36-46 parts of aluminum silicate fibers and 3-6 parts of silica aerogel, and mixing to obtain a feed liquid B;
(5): mixing the feed liquid A and the feed liquid B to obtain feed liquid C;
(6): sequentially adding 45-53 parts of fine sand obtained in the step (1) and 235-266 parts of molybdenum tailings soaked in the step (2) into the feed liquid C, and mixing to obtain feed liquid D;
(7): adding the coarse sand soaked in the step (2) into the feed liquid D, and mixing to obtain feed liquid E, wherein 70-90 parts of coarse sand with 10-20 meshes and 60-80 parts of coarse sand with 20-40 meshes are prepared;
(8): sequentially adding 1.3-1.8 parts of defoamer, 0.6-1.2 parts of mildew inhibitor, 1.3-2.2 parts of antifreeze, 1.4-2.4 parts of thickener and 6-11 parts of hydroxymethyl cellulose into the feed liquid E, and mixing to obtain feed liquid F;
(9): adding ammonia water into the feed liquid F to adjust the pH value to 7-9, and stirring for 10-15 minutes to obtain the real stone paint.
Further, the preparation method of the core-shell type organic silicon modified styrene-acrylic emulsion in the step (3) comprises the following steps:
(a) The method comprises the following steps Mixing deionized water, methyl Methacrylate (MMA), isooctyl acrylate (EHA), styrene (St), acrylic Acid (AA), sodium persulfate and 1-allyloxy-3- (4-nonylphenol) -2-propanol polyoxyethylene (10) ether ammonium sulfate (DNS-86) under a nitrogen atmosphere at room temperature to obtain a shell pre-emulsion, wherein the volume ratio of deionized water, methyl Methacrylate (MMA), isooctyl acrylate (EHA), styrene (St), acrylic Acid (AA) to 1-allyloxy-3- (4-nonylphenol) -2-propanol polyoxyethylene (10) ether ammonium sulfate (DNS-86) is 40:6:21:34:1:2.5, and the mass concentration of sodium persulfate is 5g/L;
(b) The method comprises the following steps Mixing deionized water, sodium Dodecyl Sulfate (SDS), a nonionic emulsifier (CX-400), styrene (St), butyl Acrylate (BA) and sodium persulfate at room temperature under the nitrogen atmosphere to obtain a nuclear pre-emulsion, wherein the volume ratio of the deionized water to the Sodium Dodecyl Sulfate (SDS) to the ionic emulsifier (CX-400) to the styrene (St) to the Butyl Acrylate (BA) is 50:4:3:25:75, the mass concentration of sodium persulfate is 4.5g/L;
(c) The method comprises the following steps Adding deionized water and Sodium Dodecyl Sulfate (SDS) into 10% of the nuclear pre-emulsion, and heating to 80 ℃ until the system turns blue, wherein the volume ratio of the nuclear pre-emulsion to the deionized water to the Sodium Dodecyl Sulfate (SDS) is 15.7:64:1;
(d) The method comprises the following steps Dropwise adding the residual 90% of nuclear pre-emulsion into the mixed solution obtained in the step (c), heating to 90 ℃, then adding sodium persulfate, preserving heat for 1h, then cooling to 80 ℃, and then adding sodium persulfate, wherein the mass ratio of the sodium persulfate added for two times is 2:3, and the mass concentration of the sodium persulfate is 0.15g/L;
(e) The method comprises the following steps Adding the shell pre-emulsion into the mixed solution obtained in the step (d), heating to 90 ℃, preserving heat for 1h, then cooling to 40 ℃, adjusting the pH value of the mixed solution to 8 by using ammonia water and sodium bicarbonate, and then filtering to obtain the core-shell emulsion.
The invention also provides the water-based environment-friendly natural stone paint prepared by the method.
The beneficial effects of the invention are as follows: the invention uses molybdenum ore waste stone and molybdenum tailings as sand materials, is cheap and easy to obtain, can consume a large amount of harm caused by stacking of molybdenum tailings and waste stone in mining areas, can reduce the cost of real stone paint, and has good environmental protection; the coarse and fine aggregates are from molybdenum ore waste stone and molybdenum tailings, are similar in chemical composition and mineral composition, have self-affinity based on the synergistic coupling action natural law of similar compatibility and homopolar attraction, so that the compatibility of a real stone paint coating is high, the bonding strength of the real stone paint can be improved, and compared with the styrene-acrylic emulsion with a non-core-shell structure, the organic silicon modified styrene-acrylic emulsion with a core-shell structure has better adhesive force and hardness than the non-core-shell structure, the heat resistance can be improved by about 10 ℃, the heat resistance of the real stone paint can be effectively improved, and the specific effects are shown in the embodiment.
Drawings
FIG. 1 is a graph showing the TG curves of core-shell type organosilicon modified styrene-acrylic emulsion and non-core-shell type organosilicon modified styrene-acrylic emulsion in the embodiment of the invention;
FIG. 2 is a coating appearance of the stone lacquer prepared in example 2 of the present invention;
FIG. 3 is a graph showing the internal morphology of a coating of the stone paint prepared in example 2 of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
The preparation method of the core-shell type organosilicon modified styrene-acrylic emulsion comprises the following steps:
(a) The method comprises the following steps 40L of deionized water, 6L of Methyl Methacrylate (MMA), 21L of isooctyl acrylate (EHA), 34L of styrene (St), 1L of Acrylic Acid (AA), 523g of sodium persulfate and 2.5L1-allyloxy-3- (4-nonylphenol) -2-propanol polyoxyethylene (10) ether ammonium sulfate (DNS-86) are mixed for 30min at 30 ℃ under a nitrogen atmosphere to obtain a shell pre-emulsion;
(b) The method comprises the following steps 50L of deionized water, 4L of Sodium Dodecyl Sulfate (SDS), 3L of a nonionic emulsifier (CX-400), 25L of styrene (St), 75L of Butyl Acrylate (BA) and 707g of sodium persulfate are mixed for 30min at 30 ℃ under the nitrogen atmosphere to obtain a nuclear pre-emulsion;
(c) The method comprises the following steps Taking 10% of nuclear pre-emulsion, adding 64L of deionized water and 1L of Sodium Dodecyl Sulfate (SDS), and heating to 80 ℃ until the system turns blue;
(d) The method comprises the following steps Dropwise adding the residual 90% of the nuclear pre-emulsion into the mixed solution obtained in the step (c), heating to 90 ℃, adding 20g of sodium persulfate, preserving heat for 1h, cooling to 80 ℃, and adding 30g of sodium persulfate;
(e) The method comprises the following steps Adding the shell pre-emulsion into the mixed solution obtained in the step (d), heating to 90 ℃, preserving heat for 1h, cooling to 40 ℃, regulating the pH value of the mixed solution to 8 by using ammonia water and sodium bicarbonate, and filtering to obtain the core-shell emulsion.
The core-shell type organic silicon modified styrene-acrylic emulsion and the commercial modified styrene-acrylic emulsion (constant and LR-2052 modified styrene-acrylic emulsion) prepared by the method are respectively smeared on a polytetrafluoroethylene sheet, the film forming thickness is 30 mu m, and the core-shell type organic silicon modified styrene-acrylic emulsion and the commercial modified styrene-acrylic emulsion are dried for 10 hours at the temperature of 40 ℃ in a vacuum drying oven for thermal gravimetric analysis, wherein the test conditions are as follows: heating from room temperature to 50deg.C at a rate of 10.00K/min, heating from 50deg.C to 800deg.C at a rate of 1K/min, and heating to heavy atmosphere: the nitrogen gas is 20ml/min, the computer automatically samples and records, and the thermogravimetric curve is shown in figure 1 of the specification.
According to the analysis of the specification, as shown in the attached figure 1, the TG curve of the core-shell organic silicon modified styrene-acrylic emulsion obviously moves to a high temperature region, the weight loss speed of the core-shell organic silicon modified styrene-acrylic emulsion film is increased at 295-425 ℃, the weight loss range of the non-core-shell organic silicon modified styrene-acrylic emulsion is 285-425 ℃, and the heat resistance of the core-shell organic silicon modified styrene-acrylic emulsion is improved by about 10 ℃.
Example 1:
the preparation method of the water-based environment-friendly natural stone paint comprises the following steps:
(1): removing the waste molybdenum ore from the soil, crushing, and preparing coarse sand with 10-20 meshes and 20-40 meshes and fine sand with more than 40 meshes by a sand making machine;
(2): soaking coarse sand and molybdenum tailings obtained in the step (1) in 0.1% sodium hydroxide solution for 8 hours, and filtering;
(3): mixing 32.5 parts of deionized water, 1.3 parts of defoamer, 15 parts of film-forming auxiliary agent and 295 parts of core-shell type organic silicon modified styrene-acrylic emulsion, and dispersing for 5min at 600r/min to obtain a feed liquid A;
(4): 97.5 parts of deionized water and 1.5 parts of dispersing agent are mixed, dispersed for 5min at 300r/min, and then heat preservation functional filler is added in sequence: 72 parts of sepiolite, 75 parts of hollow glass beads, 36 parts of aluminum silicate fibers and 3 parts of silica aerogel, wherein each of the first three fillers is added to be dispersed for 3min at 350r/min, and after the silica aerogel is added, the silica aerogel is firstly dispersed for 3min at 500r/min and then dispersed for 15min at 800r/min to prepare a feed liquid B;
(5): mixing the feed liquid A and the feed liquid B, and dispersing for 5min at 600r/min to obtain feed liquid C;
(6): sequentially adding 45 parts of fine sand obtained in the step (1) and 235 parts of molybdenum tailings soaked in the step (2) into the feed liquid C, dispersing for 5min at 300r/min after adding the fine sand, dispersing for 5min at 600r/min after adding the molybdenum tailings, and dispersing for 10min at 1000r/min to obtain feed liquid D;
(7): adding 70 parts of the coarse sand soaked in the step (2) into the feed liquid D, wherein the coarse sand is firstly added with 70 parts of the coarse sand with 10-20 meshes and dispersed for 5min at 600r/min, then added with 60 parts of the coarse sand with 20-40 meshes and dispersed for 5min at 800r/min and then dispersed for 10min at 1000r/min to prepare feed liquid E;
(8): sequentially adding 1.3 parts of defoaming agent, 0.6 part of mildew preventive, 1.3 parts of antifreezing agent, 1.4 parts of thickening agent and 6 parts of hydroxymethyl cellulose into the feed liquid E, and dispersing at 1000r/min for 8min to prepare feed liquid F;
(9): adding ammonia water into the feed liquid F to adjust the pH value to 8, dispersing for 5min at 1200r/min, and dispersing for 10min at 500r/min to obtain the real stone paint.
Example 2:
(1): removing the waste molybdenum ore from the soil, crushing, and preparing coarse sand with 10-20 meshes and 20-40 meshes and fine sand with more than 40 meshes by a sand making machine;
(2): soaking coarse sand and molybdenum tailings obtained in the step (1) in 0.1% sodium hydroxide solution for 8 hours, and filtering;
(3): 36 parts of deionized water, 1.6 parts of defoamer, 18 parts of film forming additive and 305 parts of core-shell type organic silicon modified styrene-acrylic emulsion are mixed and dispersed for 5min at 600r/min to obtain feed liquid A;
(4): 107 parts of deionized water and 1.9 parts of dispersing agent are mixed, dispersed for 5min at 300r/min, and then heat preservation functional filler is added in sequence: 79 parts of sepiolite, 79.5 parts of hollow glass beads, 42 parts of aluminum silicate fibers and 5.1 parts of silica aerogel, wherein each of the first three fillers is added with 350r/min for 3min, and after the silica aerogel is added, the mixture is firstly dispersed for 3min at 500r/min and then dispersed for 15min at 800r/min to prepare a feed liquid B;
(5): mixing the feed liquid A and the feed liquid B, and dispersing for 5min at 600r/min to obtain feed liquid C;
(6): adding 49 parts of the fine sand obtained in the step (1) and 255 parts of the molybdenum tailings soaked in the step (2) into the feed liquid C in sequence, dispersing for 5min at 300r/min after adding the fine sand, dispersing for 5min at 600r/min after adding the molybdenum tailings, and dispersing for 10min at 1000r/min to obtain a feed liquid D;
(7): adding 80 parts of the coarse sand soaked in the step (2) into the feed liquid D, wherein the coarse sand is firstly added with 80 parts of the coarse sand with 10-20 meshes and dispersed for 5min at 600r/min, then added with 70 parts of the coarse sand with 20-40 meshes and dispersed for 5min at 800r/min and then dispersed for 10min at 1000r/min to prepare feed liquid E;
(8): sequentially adding 1.6 parts of defoaming agent, 0.9 part of mildew preventive, 1.7 parts of antifreezing agent, 1.8 parts of thickening agent and 9 parts of hydroxymethyl cellulose into the feed liquid E, and dispersing at 1000r/min for 8min to prepare feed liquid F;
(9): adding ammonia water into the feed liquid F to adjust the pH value to 8, dispersing for 5min at 1200r/min, and dispersing for 10min at 500r/min to obtain the real stone paint.
Example 3:
(1): removing the waste molybdenum ore from the soil, crushing, and preparing coarse sand with 10-20 meshes and 20-40 meshes and fine sand with more than 40 meshes by a sand making machine;
(2): soaking coarse sand and molybdenum tailings obtained in the step (1) in 0.1% sodium hydroxide solution for 8 hours, and filtering;
(3): mixing 38.5 parts of deionized water, 1.8 parts of defoamer, 22 parts of film-forming auxiliary agent and 320 parts of core-shell type organic silicon modified styrene-acrylic emulsion, and dispersing for 5min at 600r/min to obtain a feed liquid A;
(4): 116.5 parts of deionized water and 2.3 parts of dispersing agent are mixed, dispersed for 5min at 300r/min, and then heat preservation functional filler is added in sequence: 82 parts of sepiolite, 87 parts of hollow glass beads, 46 parts of aluminum silicate fibers and 6 parts of silica aerogel, wherein each of the first three fillers is added to be dispersed for 3min at 350r/min, and after the silica aerogel is added, the silica aerogel is firstly dispersed for 3min at 500r/min and then dispersed for 15min at 800r/min to prepare a feed liquid B;
(5): mixing the feed liquid A and the feed liquid B, and dispersing for 5min at 600r/min to obtain feed liquid C;
(6): sequentially adding 53 parts of fine sand obtained in the step (1) and 266 parts of molybdenum tailings soaked in the step (2) into the feed liquid C, dispersing for 5min at 300r/min after adding the fine sand, dispersing for 5min at 600r/min after adding the molybdenum tailings, and dispersing for 10min at 1000r/min to obtain feed liquid D;
(7): adding 90 parts of the coarse sand with 10-20 meshes into the feed liquid D, dispersing for 5min at 600r/min, adding 80 parts of the coarse sand with 20-40 meshes, dispersing for 5min at 800r/min, and dispersing for 10min at 1000r/min to obtain a feed liquid E;
(8): sequentially adding 1.8 parts of defoaming agent, 1.2 parts of mildew preventive, 2.2 parts of antifreezing agent, 2.4 parts of thickening agent and 11 parts of hydroxymethyl cellulose into the feed liquid E, and dispersing at 1000r/min for 8min to prepare feed liquid F;
(9): adding ammonia water into the feed liquid F to adjust the pH value to 8, dispersing for 5min at 1200r/min, and dispersing for 10min at 500r/min to obtain the real stone paint.
The bonding strength of the stone-like paints prepared in examples 1 to 3 was tested according to JG/T24-2018 "synthetic resin emulsion sand wall-like architectural paint", the stone-like paints prepared in examples 1 to 3 were respectively poured into 300 mm-100 mm molds, and after natural drying, the paint was tested for thermal conductivity by using a DRM-1 type thermal conductivity tester and using the principle of pulse plane heat source method, and the results are shown in Table 1:
Figure BDA0004026264750000071
TABLE 1
The real stone paint prepared in the example 2 is coated on a cement mortar wall surface, the appearance of the coating is shown in the specification of figure 2, the internal appearance of the coating is shown in the specification of figure 3, the performance of the real stone paint coating system is tested according to JG/T24-2018, and the result is shown in the table 2:
Figure BDA0004026264750000081
TABLE 2
As can be seen from the combination of the table 1 and the table 2, the invention uses the core-shell type organosilicon modified styrene-acrylic emulsion as the emulsion of the real stone paint, uses the molybdenum ore waste stone and the molybdenum tailings as the sand material, and the prepared real stone paint has higher bonding strength and lower heat conductivity coefficient, the paint performance meets the technical index requirements of JG/T24-2018, and as can be seen from the figures 2 and 3, the components of the coating are mutually penetrated to form a uniform and compact structure, and the coating has excellent overall performance.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (3)

1. The preparation method of the water-based environment-friendly natural stone paint is characterized by comprising the following steps of:
(1): removing the waste molybdenum ore from the soil, crushing, and preparing coarse sand with 10-20 meshes and 20-40 meshes and fine sand with more than 40 meshes by a sand making machine;
(2): soaking coarse sand and molybdenum tailings obtained in the step (1) in 0.1% sodium hydroxide solution for 6-8 hours, and filtering;
(3): mixing 32.5-38.5 parts of deionized water, 1.3-1.8 parts of defoamer, 15-22 parts of film forming auxiliary agent and 295-320 parts of core-shell type organic silicon modified styrene-acrylic emulsion to obtain a feed liquid A;
(4): 97.5 to 116.5 parts of deionized water and 1.5 to 2.3 parts of dispersing agent are mixed, and then heat preservation functional filler is added in sequence: 72-82 parts of sepiolite, 75-87 parts of hollow glass beads, 36-46 parts of aluminum silicate fibers and 3-6 parts of silica aerogel, and mixing to obtain a feed liquid B;
(5): mixing the feed liquid A and the feed liquid B to obtain feed liquid C;
(6): sequentially adding 45-53 parts of fine sand obtained in the step (1) and 235-266 parts of molybdenum tailings soaked in the step (2) into the feed liquid C, and mixing to obtain feed liquid D;
(7): adding the coarse sand soaked in the step (2) into the feed liquid D, and mixing to obtain feed liquid E, wherein 70-90 parts of coarse sand with 10-20 meshes and 60-80 parts of coarse sand with 20-40 meshes are prepared;
(8): sequentially adding 1.3-1.8 parts of defoamer, 0.6-1.2 parts of mildew inhibitor, 1.3-2.2 parts of antifreeze, 1.4-2.4 parts of thickener and 6-11 parts of hydroxymethyl cellulose into the feed liquid E, and mixing to obtain feed liquid F;
(9): adding ammonia water into the feed liquid F to adjust the pH value to 7-9, and stirring for 10-15 minutes to obtain the real stone paint.
2. The preparation method of the water-based environment-friendly natural stone paint according to claim 1, which is characterized in that the preparation method of the core-shell type organic silicon modified styrene-acrylic emulsion in the step (3) is as follows:
(a) The method comprises the following steps Mixing deionized water, methyl Methacrylate (MMA), isooctyl acrylate (EHA), styrene (St), acrylic Acid (AA), sodium persulfate and 1-allyloxy-3- (4-nonylphenol) -2-propanol polyoxyethylene (10) ether ammonium sulfate (DNS-86) under a nitrogen atmosphere at room temperature to obtain a shell pre-emulsion, wherein the volume ratio of deionized water, methyl Methacrylate (MMA), isooctyl acrylate (EHA), styrene (St), acrylic Acid (AA) to 1-allyloxy-3- (4-nonylphenol) -2-propanol polyoxyethylene (10) ether ammonium sulfate (DNS-86) is 40:6:21:34:1:2.5, and the mass concentration of sodium persulfate is 5g/L;
(b) The method comprises the following steps Mixing deionized water, sodium Dodecyl Sulfate (SDS), a nonionic emulsifier (CX-400), styrene (St), butyl Acrylate (BA) and sodium persulfate at room temperature under the nitrogen atmosphere to obtain a nuclear pre-emulsion, wherein the volume ratio of the deionized water to the Sodium Dodecyl Sulfate (SDS) to the ionic emulsifier (CX-400) to the styrene (St) to the Butyl Acrylate (BA) is 50:4:3:25:75, the mass concentration of sodium persulfate is 4.5g/L;
(c) The method comprises the following steps Adding deionized water and Sodium Dodecyl Sulfate (SDS) into 10% of the nuclear pre-emulsion, and heating to 80 ℃ until the system turns blue, wherein the volume ratio of the nuclear pre-emulsion to the deionized water to the Sodium Dodecyl Sulfate (SDS) is 15.7:64:1;
(d) The method comprises the following steps Dropwise adding the residual 90% of nuclear pre-emulsion into the mixed solution obtained in the step (c), heating to 90 ℃, then adding sodium persulfate, preserving heat for 1h, then cooling to 80 ℃, and then adding sodium persulfate, wherein the mass ratio of the sodium persulfate added for two times is 2:3, and the mass concentration of the sodium persulfate is 0.15g/L;
(e) The method comprises the following steps Adding the shell pre-emulsion into the mixed solution obtained in the step (d), heating to 90 ℃, preserving heat for 1h, then cooling to 40 ℃, adjusting the pH value of the mixed solution to 8 by using ammonia water and sodium bicarbonate, and then filtering to obtain the core-shell emulsion.
3. The water-based environment-friendly natural stone paint is characterized by being prepared by the preparation method of any one of claims 1-2.
CN202211711206.6A 2022-12-29 2022-12-29 Water-based environment-friendly natural stone paint and preparation method thereof Pending CN116218314A (en)

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