Real stone paint and preparation method and application thereof

Abstract

The present application provides a kind of real stone paint and its preparation method, application, it is related to real stone paint technical field, including the following components by weight fraction: water 15~20 parts, cellulose ether 0.1~0.4 parts, polypropylene short fiber 0.5~1.5 parts, modified acrylic emulsion 12~16 parts, shell sand 25~40 parts, and polyurethane graphene-aerogel expanded perlite 25~40 parts;Wherein, polyurethane graphene-aerogel expanded perlite includes expanded perlite carrier, and polyurethane graphene-aerogel filled in the opening structure of expanded perlite carrier.This application solves the technical problems of too much natural color sand in the prior art, not easy to adjust color, construction difficulty, poor heat insulation and reflection effect and surface easy to be contaminated, achieves energy saving and environmental protection, strong weather resistance, low consumption, good heat insulation effect and light weight safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of real stone paint, in particular to a real stone paint, a preparation method and application thereof. BACKGROUND

[0002] Real stone paint is a kind of thick paint, which is usually prepared from synthetic resin emulsion, natural white sand, natural colored sand and related additives. The building decorated with real stone paint has the effect of natural sandstone, and has lively and realistic decoration, which gives people the effect of returning to nature, and thus is widely loved by people and is increasingly used in the decoration of the outer walls of various buildings. With the continuous expansion of the market of real stone paint, the resources of natural colored sand are becoming less and less, and the continuous exploitation also leads to a series of problems such as serious air pollution and climate deterioration; in addition, real stone paint is colored with colored sand, which involves a large number of colors and particle sizes of colored sand, which will affect the subsequent storage and actual production.

[0003] With the advent of the low-carbon energy-saving era, in the field of outer wall decoration, the environmental protection and energy saving and heat insulation performance of the outer wall decoration paint are improved, so as to reduce the building energy consumption and alleviate the energy shortage, which has become one of the important means of energy saving and emission reduction. The prior art CN 116731572 A discloses a preparation method of green low-carbon energy-saving light real stone paint, which uses the reaction of guar gum and transition zirconium metal ion coupling agent to reduce the use of alcohol additives in the preparation process, reduce the generation of harmful volatile substances, and form independent small color points, so as to achieve the effects of low energy consumption and light weight of the product; however, this method is still based on the principle of water-in-sand real stone paint, and about 30-40% of natural white sand is still used in the paint, and the paint does not have the effect of heat insulation. The prior art CN 111073415 A discloses a color sand-free light real stone paint, which selects water-based super-fine colored rock pieces and hollow glass micro-powder as raw materials and fillers for displaying the color effect of real stone paint, and the amount of the two is less than that of traditional real stone paint, and the synergistic effect of the two can effectively reduce the load of building walls, so that the wall coating becomes lighter and safer; however, this method cannot endow the paint with the performance of heat insulation.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] One of the purposes of the present application is to provide a real stone paint, which has super strong heat insulation capacity and super strong pollution resistance, and has the characteristics of energy saving and environmental protection, strong weather resistance, low consumption, good heat insulation effect and light weight and safety.

[0006] The second purpose of the present application is to provide a preparation method of real stone paint, which is simple, efficient and has high success rate, and is suitable for factory production.

[0007] The third object of the present application is to provide an application of the real stone paint, which can achieve outstanding application effects.

[0008] In order to achieve the above-mentioned objects of the present application, the following technical solutions are adopted:

[0009] In a first aspect, a real stone paint includes the following components by weight fraction:

[0010] Water 15-20 parts, cellulose ether 0.1-0.4 parts, polypropylene short fiber 0.5-1.5 parts, modified acrylic emulsion 12-16 parts, shell sand 25-40 parts, and polyurethane graphene-aerogel expanded perlite 25-40 parts;

[0011] The polyurethane graphene-aerogel expanded perlite includes an expanded perlite carrier and a polyurethane graphene-aerogel filled in the open pore structure of the expanded perlite carrier.

[0012] Further, the cellulose ether includes at least one of hydroxypropyl methylcellulose and hydroxyethyl methylcellulose.

[0013] Further, the polypropylene short fiber includes at least one of 6mm specification polypropylene short fiber and 3mm specification polypropylene short fiber.

[0014] Further, the modified acrylic emulsion includes an organic silicon modified acrylic emulsion.

[0015] Further, the shell sand includes at least one of 20-40 mesh shell sand, 40-80 mesh shell sand, and 80-120 mesh shell sand.

[0016] Further, the components of the real stone paint further include a defoaming agent 0.05-0.1 parts;

[0017] Preferably, the defoaming agent includes at least one of a mineral oil type defoaming agent, a polymer type defoaming agent, and a silicone type defoaming agent.

[0018] Preferably, the components of the real stone paint further include a pH adjuster 0.05-0.2 parts;

[0019] Preferably, the pH adjuster includes at least one of sodium hydroxide solution, 2-amino-2-methyl-1-propanol, and ammonia water.

[0020] Preferably, the components of the real stone paint further include a film-forming aid 1-1.5 parts.

[0021] Further, the components of the real stone paint further include a bactericide 0.1-0.3 parts.

[0022] Preferably, the components of the stone-like paint further comprise a thickening agent 0.05-0.2 parts;

[0023] Preferably, the thickening agent comprises at least one of polyurethane thickening agent and alkali-swellable thickening agent.

[0024] Preferably, the components of the stone-like paint further comprise an anti-freezing agent 0.5-1.0 parts.

[0025] Preferably, the anti-freezing agent comprises at least one of propylene glycol and ethylene glycol.

[0026] In a second aspect, a method for preparing the stone-like paint according to any one of the preceding aspects, comprising the following steps:

[0027] The components are mixed in proportion to obtain the stone-like paint.

[0028] Further, the method for preparing the polyurethane graphene-aerogel expanded perlite comprises the following steps:

[0029] (a) isophorone diisocyanate, hydroxylated graphene and triethylamine are mixed and reacted to obtain polyurethane graphene;

[0030] (b) propyl potassium silicate aqueous solution, sodium perfluorooctyl sulfonate and acid catalyst are mixed to obtain a mixture system;

[0031] The polyurethane graphene obtained in step (a) is added to the mixture system to react to obtain polyurethane graphene-alkane silica sol;

[0032] Preferably, the pH value of the mixture system is 5-6.

[0033] (c) the expanded perlite loaded with gel promoter is immersed in the polyurethane graphene-alkane silica sol obtained in step (b) to obtain expanded perlite containing wet gel, and the expanded perlite containing wet gel is taken to age, dry to obtain the polyurethane graphene-aerogel expanded perlite.

[0034] In a third aspect, the stone-like paint according to any one of the preceding aspects is applied in building decoration.

[0035] Compared with the prior art, the present application has at least the following beneficial effects:

[0036] The real stone paint provided by the present application can reduce the amount of natural quartz sand by about 1 / 2 of the original amount by using polyurethane graphene-aerogel expanded perlite and shell sand instead of natural quartz sand; the microporous structure of the polyurethane graphene-aerogel expanded perlite can make the coating have super strong heat preservation capacity, and the polyurethane graphene-aerogel filled in the voids of the expanded perlite greatly improves the strength; meanwhile, after the polyurethane graphene-aerogel expanded perlite is combined with the modified acrylic emulsion, the surface tension of the coating film is lower, and dust cannot be attached, and according to the standard JG / T24 Synthetic Resin Emulsion Sand Wall Coating, the dirt resistance can reach 0 level, and the super strong dirt resistance is difficult to achieve by ordinary stone-like coatings. In summary, the real stone paint of the present application can achieve the effects of super strong heat preservation capacity and super strong dirt resistance under the synergistic cooperation of the components and the amount ratio, and has the characteristics of energy saving and environmental protection, strong weather resistance, low consumption, good heat insulation effect and light weight safety.

[0037] The preparation method of the real stone paint provided by the present application is simple, efficient and has a high success rate, and is suitable for factory production.

[0038] The application of the real stone paint provided by the present application can achieve outstanding application effects. DETAILED DESCRIPTION

[0039] The technical solutions of the present application will be described clearly and completely below with reference to the embodiments, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0040] The amount of natural color sand added in the traditional real stone paint is large, and the resource of natural color sand is becoming more and more exhausted, and blind mining has led to a series of problems such as serious air pollution and climate deterioration. At the same time, due to different mineral resources, the color of the color sand is extremely unstable, which brings a series of problems to the color adjustment of the real stone paint; in addition, the specific gravity of the natural color sand is large, which makes the real stone paint heavy, increases the construction difficulty, leads to a large amount of real stone paint used in construction, and wastes resources and has certain safety hazards. Most of the thermal real stone paints on the market realize the heat insulation and reflection effect through heat insulation color sand, and there is a large difference in the heat insulation and reflection effect between real stone paints of different lightness; due to the high porosity of the real stone paint, dust and particles in the air can easily cause pollution on the surface of the real stone paint, which seriously affects the decoration effect of the real stone paint. In order to solve the above problems in the prior art, the present application is proposed.

[0041] According to a first aspect of the present application, a real stone paint is provided, comprising the following components by weight fraction:

[0042] water 15-20 parts, cellulose ether 0.1-0.4 parts, polypropylene short fiber 0.5-1.5 parts, modified acrylic emulsion 12-16 parts, shell sand 25-40 parts, and polyurethane graphene-aerogel expanded perlite 25-40 parts;

[0043] The polyurethane graphene-aerogel expanded perlite comprises an expanded perlite carrier and polyurethane graphene-aerogel filled in the open pore structure of the expanded perlite carrier.

[0044] The expanded perlite is a microporous thermal insulation material with a pore size of microns, and has the properties of porosity and high adsorption capacity for liquid phase materials. Based on the cost advantage, better thermal insulation performance and high adsorption of the expanded perlite, the high-performance thermal insulation material polyurethane graphene-aerogel is filled in the open pore structure of the expanded perlite, which increases the thermal insulation performance and improves the hardness of the expanded perlite.

[0045] The true stone paint provided by the present application can replace natural quartz sand with polyurethane graphene-aerogel expanded perlite and shell sand, which can reduce the amount of natural quartz sand to about 1 / 2 of the original amount. The microporous structure of the polyurethane graphene-aerogel expanded perlite can make the coating have super strong thermal insulation capacity, and the expanded perlite void is filled with polyurethane graphene-aerogel, which greatly improves the strength. At the same time, after the polyurethane graphene-aerogel expanded perlite is combined with the modified acrylic emulsion, the surface tension of the coating film is lower, and dust cannot be attached. According to the standard JG / T24 "Synthetic resin emulsion sand wall coating", the dirt resistance can reach 0 level, and has super strong pollution resistance, which is difficult to achieve by ordinary stone-like coatings.

[0046] In the present application, the typical but non-limiting weight fractions of water are, for example, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts; the typical but non-limiting weight fractions of cellulose ether are, for example, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts; the typical but non-limiting weight fractions of polypropylene short fiber are, for example, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts; the typical but non-limiting weight fractions of modified acrylic emulsion are, for example, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts; the typical but non-limiting weight fractions of shell sand are, for example, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 32 parts, 34 parts, 36 parts, 38 parts, 40 parts; the typical but non-limiting weight fractions of polyurethane graphene-aerogel expanded perlite are, for example, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 32 parts, 34 parts, 36 parts, 38 parts, 40 parts.

[0047] The real stone paint of the present application has the effects of super heat preservation and super pollution resistance, and has the characteristics of energy saving and environmental protection, strong weather resistance, low consumption, good heat insulation effect, light weight and safety.

[0048] In a preferred embodiment, the cellulose ether includes, but is not limited to, at least one of hydroxypropyl methylcellulose and hydroxyethyl methylcellulose.

[0049] In a preferred embodiment, the polypropylene short fiber includes, but is not limited to, at least one of 6mm specification polypropylene short fiber and 3mm specification polypropylene short fiber, which can well improve the crack resistance and strength of the real stone paint, and has stable chemical properties and strong acid and alkali resistance.

[0050] In a preferred embodiment, the modified acrylic emulsion includes, but is not limited to, silicone-modified acrylic emulsion, which contains both hydroxyl groups and siloxane groups, can form a hydrophobic surface film on the surface during construction, which improves the mechanical properties of the system and reduces dust accumulation.

[0051] With the rapid development of shellfish culture and processing industry, a large amount of waste shells cannot be fully utilized, and the environmental pollution is becoming more and more serious year by year. In view of this, the present application uses shell sand to replace natural color sand, which can effectively solve the problem of lack of natural ore, and make full use of waste shells to be environmentally friendly. At the same time, the specific gravity of the shell sand is light, and the fine particles of the shell powder treated by the biological activation technology are in the form of porous fibrous double helix, so they have strong physical adsorption and ion exchange function, can absorb and decompose free formaldehyde and benzene in the air, and also have strong antibacterial and sterilization effect. In addition, the surface of the shell sand has rich organic groups such as amino and hydroxyl groups, the surface has hydrophilic and oleophilic amphiphilicity, and the powder also has low cohesive energy, so the stain resistance is good.

[0052] In a preferred embodiment, the shell sand includes, but is not limited to, at least one of 20-40 mesh shell sand, 40-80 mesh shell sand and 80-120 mesh shell sand, which is treated by biological activation technology, has high strength, light specific gravity, porous medium, and the surface presents many fine pores. The surface of the shell sand has rich organic groups such as amino and hydroxyl groups, the surface has hydrophilic and oleophilic amphiphilicity, and has low cohesive energy, so the stain resistance is good.

[0053] In a preferred embodiment, the raw material components of the stone paint coating of the present application can also add 0.05-0.1 parts of defoaming agent, for example, 0.05 parts of defoaming agent, 0.06 parts of defoaming agent, 0.07 parts of defoaming agent, 0.08 parts of defoaming agent, 0.09 parts of defoaming agent, 0.1 parts of defoaming agent, but not limited to this; wherein the defoaming agent includes but is not limited to at least one of mineral oil defoaming agent, polymer defoaming agent and silicone defoaming agent.

[0054] In a preferred embodiment, the raw material components of the stone paint coating of the present application can also add 0.05-0.2 parts of pH regulator, for example, 0.05 parts of pH regulator, 0.1 parts of pH regulator, 0.12 parts of pH regulator, 0.14 parts of pH regulator, 0.16 parts of pH regulator, 0.18 parts of pH regulator, 0.2 parts of pH regulator, but not limited to this; wherein the pH regulator includes but is not limited to at least one of sodium hydroxide aqueous solution, 2-amino-2-methyl-1-propanol and ammonia.

[0055] In a preferred embodiment, the raw material components of the stone paint coating of the present application can also add 1-1.5 parts of film-forming aid, for example, 1 parts of film-forming aid, 1.1 parts of film-forming aid, 1.2 parts of film-forming aid, 1.3 parts of film-forming aid, 1.4 parts of film-forming aid, 1.5 parts of film-forming aid, but not limited to this; wherein the film-forming aid can be selected from the environmentally friendly film-forming aid produced and sold by Eastman Company of the United States, but not limited to this.

[0056] In a preferred embodiment, the raw material components of the stone paint coating of the present application can also add 0.1-0.3 parts of bactericide, for example, 0.1 parts of bactericide, 0.2 parts of bactericide, 0.3 parts of bactericide, but not limited to this; wherein the bactericide can be selected from the bactericide sold by Troy Company of the United States, but not limited to this.

[0057] In a preferred embodiment, the raw material components of the stone paint coating of the present application can also add 0.05-0.2 parts of thickening agent, for example, 0.05 parts of thickening agent, 0.1 parts of thickening agent, 0.12 parts of thickening agent, 0.14 parts of thickening agent, 0.16 parts of thickening agent, 0.18 parts of thickening agent, 0.2 parts of thickening agent, but not limited to this; wherein the thickening agent includes but is not limited to at least one of polyurethane thickening agent and alkali-swellable thickening agent.

[0058] In a preferred embodiment, the raw material components of the stone paint coating of the present application can also add 0.5-1 parts of antifreeze, for example, 0.5 parts of antifreeze, 0.6 parts of antifreeze, 0.7 parts of antifreeze, 0.8 parts of antifreeze, 0.9 parts of antifreeze, 1 parts of antifreeze, but not limited to this; wherein the antifreeze includes but is not limited to at least one of propylene glycol and ethylene glycol.

[0059] According to a second aspect of the present application, there is provided a method for preparing the real stone paint as described in any one of the above, comprising the following steps:

[0060] The components are mixed in proportion to obtain the real stone paint.

[0061] The method for preparing the real stone paint provided by the present application is simple, efficient, and has a high success rate, and is suitable for factory production.

[0062] In a preferred embodiment, the method for preparing the polyurethane graphene-aerogel expanded perlite comprises the following steps:

[0063] (a) isophorone diisocyanate, hydroxylated graphene, and triethylamine are mixed and reacted to obtain polyurethane graphene;

[0064] (b) a propyl potassium silicate aqueous solution, sodium perfluorooctyl sulfonate, and an acid catalyst are mixed to obtain a mixture system;

[0065] The polyurethane graphene obtained in step (a) is added to the mixture system for reaction to obtain polyurethane graphene-alkane silica sol;

[0066] The pH value of the mixture system can be 5-6, for example, 5, 5.2, 5.4, 5.6, 5.8, or 6, but is not limited thereto;

[0067] (c) the expanded perlite loaded with the gel promoter is immersed in the polyurethane graphene-alkane silica sol obtained in step (b) to obtain expanded perlite containing wet gel, and the expanded perlite containing wet gel is taken for aging, drying, to obtain polyurethane graphene-aerogel expanded perlite.

[0068] A typical method for preparing polyurethane graphene-aerogel expanded perlite comprises the following steps:

[0069] (1) Preparation of hydrophobic sol:

[0070] A synthesis: isophorone diisocyanate, hydroxylated graphene, and triethylamine are added to a reaction kettle for mixing, and reacted at 80°C for 4 h, and then incubated for 30 min to obtain polyurethane graphene A;

[0071] B synthesis: propyl potassium silicate and water are diluted according to a volume ratio of 1:5, and then mixed uniformly with sodium perfluorooctyl sulfonate, and an acid catalyst is added under stirring to adjust the pH value of the system to 5-6 to obtain a mixture system;

[0072] Then, the polyurethane graphene A is added to the above mixture system, and reacted at 80°C for 4 h to obtain polyurethane graphene-alkane silica sol;

[0073] (2) Expanded perlite loaded with gel promoter:

[0074] The expanded perlite is soaked in an aqueous sodium hydroxide solution (pH 10), dried, to obtain expanded perlite loaded with a gel promoter;

[0075] (3) Preparation of expanded perlite filled with wet gel by dip-draw impregnation: The expanded perlite obtained in step (2) is impregnated in the polyurethane graphene-alkane silica sol of step (1), after 0.1 min, the sol liquid surface is drawn out, gelled, to obtain expanded perlite containing wet gel;

[0076] (4) Preparation of polyurethane graphene-aerogel expanded perlite by atmospheric drying:

[0077] The expanded perlite containing wet gel obtained in step (3) is aged for 0.1 h, dried at 100℃ for 4 h under atmospheric pressure, to obtain polyurethane graphene-aerogel expanded perlite.

[0078] The preparation method of the polyurethane graphene-aerogel expanded perlite of the present application, the coordination of each step and its process parameters, can effectively improve the cross-linking degree of the gel (i.e. the number of -Si-O-Si- bonds) under the premise of ensuring the hydrophobicity of the gel, and in turn can significantly improve the mechanical strength of the gel, thereby greatly improving the strength of the expanded perlite.

[0079] According to a third aspect of the present application, there is provided a use of the real stone paint as described in any one of the above in the decoration of a building.

[0080] The use of the real stone paint provided by the present application can achieve outstanding application effects.

[0081] The present application will be further described by the following examples. Unless otherwise specified, the materials in the examples are prepared according to the existing methods, or directly purchased from the market.

[0082] Examples 1-4

[0083] Examples 1-4 provide a real stone paint, the raw material components and their weight ratios are shown in Table 1.

[0084] Wherein, the cellulose is hydroxypropyl methyl cellulose HPMC of Shandong Tian Sheng; the polypropylene short fiber is 3mm specification polypropylene short fiber; the defoaming agent is BYK0245 produced by Germany BYK chemical company; the pH regulator is AMP-95 of Dow; the modified acrylic emulsion is Badu RS-992S; the film forming aid is the environmental protection type film forming aid produced and sold by American Eastman company; the fungicide is Troy K9N; the thickening agent is alkali swelling thickening agent ASE60 of Dow; the antifreezing agent is propylene glycol; the shell sand is 20-40 mesh, 40-80 mesh and 80-120 mesh shell sand of Hebei Lingshou;

[0085] The preparation method of the polyurethane graphene-aerogel expanded perlite comprises the following steps:

[0086] (1) Preparation of hydrophobic sol:

[0087] A synthesis: according to weight fraction, 5.8 parts of isophorone diisocyanate, 4 parts of hydroxylated graphene and 0.2 parts of triethylamine are added into a reaction kettle for mixing, the temperature is raised to 80 DEG C for reaction for 4h, and then the temperature is kept for 30 min, to obtain polyurethane graphene A;

[0088] B synthesis: according to weight fraction, 8 parts of propyl potassium silicate and water are diluted according to the volume ratio of 1:5, then 0.5 parts of surfactant sodium perfluorooctyl sulfonate is uniformly mixed, 0.1 parts of acid catalyst is added in the stirring process to adjust the pH value of the mixture system to 5-6, then the polyurethane graphene A is added into the above mixture system and the temperature is raised to 80 DEG C for reaction for 4h, to obtain polyurethane graphene-alkane silica sol;

[0089] (2) Expanded perlite loaded gel promoter:

[0090] The expanded perlite is soaked in sodium hydroxide aqueous solution (pH value is 10) and dried;

[0091] (3) Preparation of expanded perlite filled with wet gel by dip-drawing impregnation method:

[0092] The expanded perlite obtained in step (2) is impregnated in the polyurethane graphene-alkane silica sol obtained in step (1), after 0.1 min, the sol liquid surface is drawn out, and the gel is obtained, to obtain the expanded perlite containing wet gel;

[0093] (4) Preparation of polyurethane graphene-aerogel expanded perlite by atmospheric drying method:

[0094] The expanded perlite containing wet gel obtained in step (3) is aged for 0.1h, and dried at 100 DEG C for 4h under atmospheric pressure, to obtain polyurethane graphene-aerogel expanded perlite.

[0095] Example 5

[0096] This embodiment is a method for preparing the true stone paint of embodiment 1-4, comprising the following steps:

[0097] The components are mixed in proportion to obtain real stone paint.

[0098] Comparative Example 1-2

[0099] Comparative Example 1-2 provides a real stone paint, the raw material components and weight ratios of which are shown in Table 1, and the preparation method is referred to Example 5.

[0100] Table 1

[0101]

[0102] Test example

[0103] The construction amount per square meter, thermal insulation temperature difference, stain resistance level and bonding strength performance of the real stone paint provided by Examples 1-4 and Comparative Examples 1-2 were tested respectively. The results are shown in Table 2.

[0104] Among them, the stain resistance test standard is GB / T 9780-2013 "Test method for stain resistance of architectural coatings", and the bonding strength test standard is JG / T24-2018 "Synthetic resin emulsion sand-walled architectural coatings".

[0105] Table 2

[0106]

[0107] As shown in Table 2, the various properties of the real stone paint coatings of Examples 1-4 are all excellent; natural colored sand is used to replace shell sand and polyurethane graphene-aerogel expanded perlite in the coating of Comparative Example 1, and the remaining raw materials and proportioning compositions are the same as those in Example, resulting in a very high consumption of the coating, and almost no thermal insulation effect; traditional expanded perlite is used to replace polyurethane graphene-aerogel expanded perlite in the coating of Comparative Example 2, and the remaining raw materials and proportioning compositions are the same as those in Example, resulting in an unobvious thermal insulation effect, and poor bonding strength. This shows that the lightweight real stone paint coating provided by the present invention, under the effect of mutual promotion and synergistic cooperation of each raw material component, is not only energy-saving and environmentally friendly, but also has excellent thermal insulation effect and outstanding stain resistance, and can achieve outstanding results in building decoration.

[0108] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A real stone paint, characterized in that, It comprises the following components in parts by weight: 15-20 parts of water, 0.1-0.4 parts of cellulose ether, 0.5-1.5 parts of polypropylene staple fibers, 12-16 parts of modified acrylic emulsion, 25-40 parts of shell sand, and 25-40 parts of polyurethane graphene-aerogel expanded perlite; The polyurethane graphene-aerogel expanded perlite comprises an expanded perlite carrier and a polyurethane graphene-aerogel filled in the open-pore structure of the expanded perlite carrier; The preparation method of the polyurethane graphene-aerogel expanded perlite comprises the following steps: (a) isophorone diisocyanate, hydroxylated graphene, and triethylamine are mixed and reacted to obtain polyurethane graphene; (b) mixing an aqueous solution of potassium propyl silicate, sodium perfluorooctane sulfonate, and an acid catalyst to obtain a mixture system; The polyurethane graphene obtained in step (a) is added to the mixture system for reaction to obtain polyurethane graphene-alkane silica sol; The pH value of the mixture system is 5-6; (c) The expanded perlite loaded with the gel accelerator is immersed in the polyurethane graphene-alkane silica sol obtained in step (b) to obtain expanded perlite containing wet gel, and the expanded perlite containing wet gel is aged and dried to obtain the polyurethane graphene-aerogel expanded perlite.

2. The real stone paint according to claim 1, characterized in that The cellulose ether includes at least one of hydroxypropyl methylcellulose and hydroxyethyl methylcellulose.

3. The real stone paint according to claim 1, characterized in that The polypropylene staple fibers include at least one of 6mm polypropylene staple fibers and 3mm polypropylene staple fibers.

4. The real stone paint according to claim 1, characterized in that The modified acrylic emulsion includes silicone-modified acrylic emulsion.

5. The real stone paint according to claim 1, characterized in that: The shell sand includes at least one of 20-40 mesh shell sand, 40-80 mesh shell sand and 80-120 mesh shell sand.

6. The real stone paint according to any one of claims 1 to 5, characterized in that: The components of the real stone paint also include 0.05 to 0.1 parts of defoaming agent; The defoaming agent includes at least one of a mineral oil defoaming agent, a polymer defoaming agent and a silicone defoaming agent.

7. The real stone paint according to any one of claims 1 to 5, characterized in that: The components of the real stone paint also include 0.05 to 0.2 parts of a pH regulator; The pH regulator includes at least one of sodium hydroxide solution, 2-amino-2-methyl-1-propanol and ammonia water.

8. The real stone paint according to any one of claims 1 to 5, characterized in that: The components of the real stone paint also include 1 to 1.5 parts of a film-forming aid.

9. The real stone paint according to any one of claims 1 to 5, characterized in that: The components of the real stone paint also include 0.1 to 0.3 parts of a fungicide.

10. The real stone paint according to any one of claims 1 to 5, characterized in that: The components of the real stone paint also include 0.05 to 0.2 parts of a thickener; The thickener includes at least one of a polyurethane thickener and an alkali swelling thickener.

11. The real stone paint according to any one of claims 1 to 5, characterized in that: The components of the real stone paint also include 0.5 to 1.0 parts of antifreeze; The antifreeze agent includes at least one of propylene glycol and ethylene glycol.

12. A method for preparing the real stone paint according to any one of claims 1 to 11, characterized in that: The following steps are involved: The components are mixed in proportion to obtain the real stone paint.

13. Use of the real stone paint according to any one of claims 1 to 11 in building decoration.

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