A single-component water-based floor paint with odorless wear resistance, reflection heat insulation and rapid drying, a preparation method and application thereof

Abstract

The single-component water-based floor paint of the present application is prepared by the following steps: mixing the components of the single-component water-based floor paint, and then stirring the mixture to obtain the single-component water-based floor paint. The single-component water-based floor paint comprises the following components: 40-70% of a silanol-containing acrylic network copolymer, 0.5-2% of a dispersing agent, 0.1-2% of an antifoaming agent, 0.1-2% of a multifunctional additive, 0.1-2% of an antifreezing agent, 0.1-8% of a film-forming additive, 5-30% of pigments and fillers, 0.01-2% of a thickening agent, 0.01-2% of a wetting and leveling agent, 0.01-2% of an anti-scratch additive, 0.01-2% of a bactericide, 0.01-2% of a coupling agent, 1-15% of an infrared reflective color paste, and the balance of deionized water. The single-component water-based floor paint prepared by the present application has the advantages of simple preparation process, odorless, wear-resistant, infrared reflective, heat-insulating, fast-drying, and excellent hardness, wear resistance, solvent resistance, aging resistance, and the like.

Description

Technical Field

[0001] This invention belongs to the field of water-based floor coating technology, specifically relating to a single-component water-based floor paint that is odorless, wear-resistant, reflective, heat-insulating, and fast-drying, its preparation method, and its application. Background Technology

[0002] In today's society, global warming is one of the biggest challenges facing humanity, and reducing organic matter emissions is a major global trend. In recent years, solvent-based coatings, which are widely used globally, use organic solvents as diluents and have high levels of volatile organic compounds, seriously harming the environment. Therefore, the research and development and use of water-based coatings has become an inevitable trend.

[0003] Traditional two-component waterborne floor coatings are mainly made of epoxy materials / polyurethane, aiming to achieve high film hardness and meet the needs of specific scenarios.

[0004] Based on existing technology, patent application CN104693926A discloses a method for preparing a water-based floor paint and a construction process for water-based flooring. This provides a water-based floor paint that offers better gloss, abrasion resistance, flexibility, color retention, and weather resistance; however, its construction process is relatively complex. After applying the water-based floor paint, a curing period is required before a clear varnish topcoat can be applied, resulting in a long construction cycle.

[0005] Furthermore, patent application CN105273597A discloses a water-based floor coating and its preparation method. The water-based floor coating provided uses a high-performance resin and its curing agent to form a film after curing. The film meets the national standards for water-based flooring and possesses characteristics such as high hardness, scratch resistance, and high leveling. However, the two components of this coating react relatively quickly after mixing with the curing agent, requiring immediate use; otherwise, it will cure in a short time, resulting in material waste.

[0006] In existing technologies, waterborne epoxy / polyurethane coatings dry slowly in high humidity environments, and the paint film may become tacky. Contact with water can also lead to problems such as blooming and overlapping. Furthermore, prolonged exposure of epoxy / polyurethane resins to sunlight may result in loss of gloss and chalking of the paint film.

[0007] Therefore, developing a water-based, single-component floor coating with a simple construction process and complete functions is a necessity for social development. Summary of the Invention

[0008] The purpose of this invention is to address the problems existing in the prior art by providing a low-odor, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor coating, its preparation method, and its application. This coating not only possesses low-odor, wear-resistant, and reflective heat-insulating properties but also solves the problems of complex construction processes, long construction periods, poor environmental performance, and slow drying in existing floor coating technologies. The preparation process of this invention is simple, and the resulting floor coating exhibits excellent hardness, wear resistance, solvent resistance, aging resistance, and fast drying characteristics, enabling successful industrial production.

[0009] The first objective of this invention is:

[0010] A single-component water-based floor coating is provided, which is odorless, wear-resistant, reflective, heat-insulating, and fast-drying, and comprises the following components by weight percentage:

[0011] The composition includes 40-70% silanol-containing acrylic network copolymer, 0.5-2% dispersant, 0.1-2% defoamer, 0.1-2% multifunctional additive, 0.1-2% antifreeze, 0.1-8% film-forming aid, 5-30% pigments and fillers, 0.01-2% thickener, 0.01-2% wetting and leveling agent, 0.01-2% scratch-resistant additive, 0.01-2% bactericide, 0.01-2% coupling agent, 1-15% infrared reflective pigment, and the balance being deionized water; the sum of all components is 100%.

[0012] The pigments and fillers mentioned include pigments and fillers;

[0013] The pigment is rutile nano titanium dioxide with a particle size of 15-50 nm or 200-500 nm, or a combination thereof.

[0014] The coupling agent is a coupling agent that has been pre-diluted with edible alcohol;

[0015] The silanol-containing acrylic network copolymer comprises the following components by weight percentage:

[0016] Sodium dodecyl sulfate 0.1–2%, nonylphenol polyoxyethylene ether 0.1–1.5%, methyl methacrylate 20–40%, butyl acrylate 20–40%, methacrylic acid 2–5%, N-hydroxymethylacrylamide 2–5%, hydroxyethyl acrylate 2–5%, ammonium persulfate 0.1–0.5%, defoamer 0.1–0.5%, antioxidant 0.1–1%, acyl hydrazide compound 2–10%, vinyltriethoxysilane 0.1–2%, initiator BPO (benzoyl peroxide) 0.1–1%, chain transfer agent α-methylstyrene dimer (AMSD) 0.1–1%, ammonia water 0.1–0.5%, the balance being deionized water, the sum of all components being 100%;

[0017] The acylhydrazide compounds include: oxalic acid hydrazide, dioxalic acid hydrazide, and adipic acid hydrazide.

[0018] The nano-sized titanium dioxide, after pre-dispersion treatment in a sand mill, achieves a smaller particle size, resulting in a synergistic effect with other powders of larger particle size. It possesses the following characteristics:

[0019] 1. Extremely high reflectivity: Titanium dioxide is one of the known highly efficient reflective materials. Its high refractive index (n≈2.7) enables it to reflect most ultraviolet and visible light back into the atmosphere. The titanium dioxide used in this invention has optimized TiO2 particle size and distribution, enabling it to reflect light of different wavelengths simultaneously. The nanoscale size of the TiO2 particles further enhances light reflection capability through multiple scattering, especially in the visible light region.

[0020] 2. TiO2 exhibits the highest scattering efficiency for visible light when its particle size is between 0.2 and 0.3 μm; it also demonstrates significant shielding effect against ultraviolet light. The TiO2 particle size in the titanium dioxide selected in this invention has been optimized to maximize the reflection of both visible and ultraviolet light; simultaneously, its narrow particle size distribution reduces light absorption loss caused by excessively large or small particles, thereby improving overall reflection efficiency.

[0021] 3. White pigments typically reflect ultraviolet and visible light well, but their reflection effect is poor in the near-infrared region. The titanium dioxide used in this invention enhances the reflectivity in the 700–2500 nm wavelength band by adjusting the crystal phase ratio of TiO2.

[0022] In summary, high reflectivity reduces the absorption of ultraviolet and visible light components of solar radiation. Near-infrared reflectivity further reduces heat accumulation caused by long-wave radiation, thus achieving excellent reflective heat insulation.

[0023] The odor-free, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor coating of the present invention is further optimized as follows:

[0024] In the acylhydrazine compound, the weight ratio of oxalate dihydrazine to adipic acid dihydrazine is 1:1.2:1.5.

[0025] The odor-free, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor coating of the present invention is further optimized as follows:

[0026] It includes a combination of one or more of the following features:

[0027] The dispersant is a modified styrene-maleic acid copolymer solution;

[0028] The multifunctional additive is 2-amino-2-methyl-1-propanol;

[0029] The wetting and leveling agent is one or a combination of silicone-based and acrylic-based wetting and leveling agents;

[0030] The wetting and leveling agent is preferably an organosilicon surfactant;

[0031] The defoamer is a polymer-composite mineral oil defoamer;

[0032] The antifreeze agent is propylene glycol;

[0033] The film-forming aid is an alcohol ester film-forming aid, preferably alcohol ester-12;

[0034] The aforementioned anti-scratch agent is an organosilicon-based anti-scratch agent;

[0035] The anti-scratch agent is one or a combination of several of DC51, wax emulsion, and wax powder, preferably DC51;

[0036] The filler in the pigment and filler is one or a combination of several of the following: quartz powder, glass powder, and barium sulfate;

[0037] The infrared reflective pigment is one or a combination of several of the following: infrared reflective iron oxide black, infrared reflective chromium oxide green, infrared reflective iron oxide yellow, and infrared reflective iron oxide red.

[0038] Traditional organic pigments absorb a lot of heat and have poor heat and weather resistance. Inorganic pigments, on the other hand, are resistant to sunlight, heat, weather, and solvents, and have strong hiding power. They include various metal oxides, chromates, carbonates, sulfates, and sulfides. Infrared reflective pigments, such as iron oxide black, infrared reflective chromium oxide green, infrared reflective iron oxide yellow, and infrared reflective iron oxide red, are developed using iron oxide / chromium oxides. These pigments can effectively reflect near-infrared rays, optimize light scattering and absorption control, and have excellent spectral selectivity. They can efficiently reflect solar heat, effectively prevent solar heat from accumulating on the surface of objects, thereby reducing the surface temperature of objects and significantly improving the thermal insulation performance of coatings. At the same time, they maintain excellent color performance, which is superior to traditional organic pigments.

[0039] The thickener is a polyurethane-based, alkali-swellable, or combination thereof, preferably a combination of alkali-swellable and polyurethane thickeners;

[0040] The coupling agent is one or a combination of several of the following: titanate coupling agent, aluminate coupling agent, and silane coupling agent.

[0041] The odor-free, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor coating of the present invention is further optimized as follows:

[0042] The particle size of the filler is one or a combination of several of the following: 800 mesh, 1000 mesh, 1500 mesh, and 3000 mesh.

[0043] The odor-free, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor coating of the present invention is further optimized as follows:

[0044] The weight ratio of titanate coupling agent: aluminate coupling agent: silane coupling agent in the coupling agent is 1-5:1-5:1-5. The combined use of titanate coupling agent, aluminate coupling agent, and silane coupling agent can produce a synergistic effect, greatly improving the crosslinking and hydroxyl group grafting efficiency.

[0045] The odor-free, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor coating of the present invention is further optimized as follows:

[0046] The coupling agent is a titanate coupling agent, an aluminate coupling agent, or a silane coupling agent, which is pre-diluted with edible alcohol to a volume concentration of 35% in a weight ratio of 1-5:1-5:1-5, and then used in combination with the filler in the pigments and fillers within 5 minutes.

[0047] The odor-free, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor coating of the present invention is further optimized as follows:

[0048] The silanol-containing acrylic network copolymer comprises the following preparation steps:

[0049] S1. Add deionized water to the reactor in proportion, then gradually add sodium dodecyl sulfate and nonylphenol polyoxyethylene ether, and stir thoroughly to dissolve them evenly to form an emulsion system;

[0050] S2. Methyl methacrylate, butyl acrylate, methacrylic acid, N-hydroxymethylacrylamide and hydroxyethyl acrylate are mixed in proportion to obtain a mixed monomer; the obtained mixed monomer is gradually added to the emulsion system in step S1 while stirring to ensure that the monomer emulsion is uniform.

[0051] S3. Dissolve ammonium persulfate in a small amount of deionized water according to the proportion to form an APS initiator solution for later use;

[0052] S4. Heat the emulsion system in the reactor from step S2 to 70-80°C while stirring; gradually add the APS initiator solution from step S3, controlling the dropping rate to avoid excessive reaction, and control the dropping time of the APS initiator solution to 2-3 hours; after the dropping is complete, continue to maintain the reaction at 70-80°C for 2-3 hours to ensure complete polymerization of the monomer; after polymerization is complete, cool the reaction system to room temperature, add an appropriate amount of defoamer and antioxidant, filter to remove gel or impurities, and obtain a stable self-crosslinking acrylic emulsion;

[0053] S5. Add an acylhydrazine compound to the self-crosslinking acrylic emulsion prepared in step S4 and mix thoroughly. After mixing thoroughly, add vinyltriethoxysilane, initiator BPO (benzoyl peroxide), and chain transfer agent α-methylstyrene dimer (AMSD). Control the reaction temperature at 100-130°C and the reaction time at 2-3 hours. After the reaction is complete, add an appropriate amount of ammonia to adjust the pH of the emulsion to 7-9. Use a vacuum pump to reduce the vacuum and keep the vacuum gauge reading at 100 Pa. React under this vacuum for 2-4 hours and then stop the vacuuming to ensure that the residual free monomer content is low. Cool the reaction system to room temperature to obtain the silanol-containing acrylic network copolymer.

[0054] The silanol-containing acrylic network copolymer prepared by the technical solution of the present invention can react with the active hydroxyl groups on nano-titanium dioxide and reflective heat insulation powder treated with coupling agent, and crosslink on the surface of nano-titanium dioxide and reflective heat insulation powder, thereby improving the dispersibility and reflectivity of nano-titanium dioxide and reflective heat insulation powder.

[0055] The technical solution of this invention can significantly improve the self-crosslinking of resin and functional powder. The monomers in the emulsion usually contain self-crosslinking functional groups, such as carboxyl, hydroxyl, or amide groups. These functional groups undergo chemical reactions during the drying process to form a strong crosslinked structure. After crosslinking, the hardness and abrasion resistance of the coating film are significantly improved. At the same time, these functional groups can react rapidly during the drying process, enabling the paint film to achieve early strength and fast drying.

[0056] The silanol-containing acrylic network copolymer prepared by the technical solution of this invention has good thermoplasticity and high light transmittance at low thickness, making it suitable for uniform distribution of emulsion particles on the coating surface. When applied to the preparation of single-component waterborne floor coatings, it reduces the cohesive energy density of the resin through self-crosslinking, significantly improving the environmental friendliness, wear resistance, chemical resistance, and weather resistance of the coating film.

[0057] The second objective of this invention is:

[0058] A method for preparing the aforementioned odor-free, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor coating is provided, comprising the following preparation steps:

[0059] A. Under stirring conditions, add deionized water, dispersant, and wetting and leveling agent to the container in proportion, stir at low speed for 5-10 minutes, then add pigment and stir for 10-15 minutes to obtain pigment paste;

[0060] B. Transfer the pigment slurry mixed in step A to a sand mill, using 0.3–2 mm zirconia beads as the milling media; mill until the slurry fineness meets the technical requirements to obtain a nanoscale pigment dispersion slurry;

[0061] C. Add coupling agent diluted with edible alcohol to the filler, stir at 50-100℃ for 2-4 hours, dry and cool naturally for later use;

[0062] D. In the reaction system container of step C, under stirring conditions, add the nano-sized pigment dispersion obtained in step B, the silanol-containing acrylic network copolymer, defoamer, multifunctional additive, antifreeze, film-forming aid, and the filler treated with coupling agent in step C. After high-speed stirring for 20-30 minutes, add thickener, anti-scratch additive, bactericide, and infrared reflective pigment paste. Stir at low speed for 5-10 minutes to obtain the odor-free, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor paint.

[0063] The third objective of this invention is:

[0064] A method for applying the aforementioned odor-free, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor coating is provided, comprising the following steps:

[0065] a. Substrate preparation: Level, dry, and clean the substrate to be constructed;

[0066] b. Apply sealing primer: Use the odorless, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor paint as the primer, apply it to the base surface described in step a, and form a primer layer after curing;

[0067] c. Application of coating: Apply two coats of the odor-free, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor paint evenly over the primer layer in step b, with a 1-hour interval between coats.

[0068] Compared with existing water-based floor coating technologies, the technical solution of this invention has the following technical features and advantages:

[0069] (1) This invention is a single-component coating, unlike conventional two-component water-based floor paints which require a curing agent for cross-linking and curing, and whose film drying is limited (affected by the amount of curing agent added, temperature and humidity, and ventilation environment). The silanol-containing acrylic network copolymer in this invention can quickly complete drying and achieve dense cross-linking hardness by relying on its own moisture and co-solvent evaporation process, shortening the drying cycle, making construction convenient, and facilitating recoating.

[0070] (2) The silanol-containing acrylic network copolymer of the present invention is modified by adding a certain amount of hydrazide compound, and then undergoes free radical polymerization with vinyltriethoxysilane under the action of initiator BPO (benzoyl peroxide) and chain transfer agent α-methylstyrene dimer AMSD to obtain a carboxylsilanol-containing acrylic copolymer. After this treatment, it can crosslink with the surface of rutile nano titanium dioxide and filler, improve the self-crosslinking of resin and functional powder, reduce cohesive energy density, and greatly improve the environmental protection, wear resistance, chemical resistance, weather resistance and other properties of the coating film.

[0071] (3) The rutile nano titanium dioxide in this invention is sand-milled and dispersed during the preparation process and compounded with large-particle-size powder. While improving the wear resistance of the floor paint, it provides reflective heat insulation and delays the aging of the resin, thereby achieving a durable effect. It can be tinted by combining with infrared reflective pigments, while maintaining excellent color performance and high reflectivity, to meet the tinting needs of different customers.

[0072] (4) The filler in this invention is pretreated with titanate coupling agent, aluminate coupling agent and silane coupling agent, and crosslinks with resin to produce a synergistic effect, which greatly improves the crosslinking and hydroxyl group grafting efficiency, and greatly improves the wear resistance and adhesion of the coating and the substrate.

[0073] (5) The coating obtained by the product of the present invention has a pencil hardness of H and a wear resistance of less than 30mg. At the same time, these functional groups can react quickly during the drying process and can be recoated in 1 hour, so that the paint film can achieve early strength and fast drying, and the construction can be completed in 1 day.

[0074] (6) The silanol-containing acrylic network copolymer of the present invention can be used outdoors and has excellent weather resistance compared with conventional styrene-acrylic and epoxy flooring, thus broadening the application scenarios. Detailed Implementation

[0075] To make the application, technical solution, and advantages of this invention clearer, the invention is described in detail with reference to specific embodiments. It should be understood that the embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this invention. Any simple improvements to the preparation method of this invention based on the inventive concept fall within the scope of protection of this invention.

[0076] The following are the technical solutions of the present invention and the raw materials used in the embodiments, as shown in Table 1.

[0077] Table 1

[0078]

[0079]

[0080] Example 1

[0081] A method for preparing a single-component water-based floor coating that is odorless, wear-resistant, reflective, heat-insulating, and fast-drying includes the following preparation steps:

[0082] A. Under stirring conditions, add deionized water, dispersant, and wetting and leveling agent to the container in proportion, stir at low speed for 5-10 minutes, then add rutile nano titanium dioxide, stir for 10-15 minutes to obtain nano titanium dioxide slurry;

[0083] B. Transfer the mixed nano titanium dioxide slurry from step A to a sand mill, using 0.3–2 mm zirconia beads as the milling media; mill until the slurry fineness meets the technical requirements to obtain a nano-sized titanium dioxide dispersion slurry;

[0084] C. Add coupling agent diluted with edible alcohol to the filler, stir at 50-100℃ for 2-4 hours, dry and cool naturally for later use;

[0085] The weight ratio of quartz powder:glass powder:barium sulfate in the filler is 2:4:4;

[0086] The weight ratio of titanate coupling agent: aluminate coupling agent: silane coupling agent in the coupling agent is 4:3:3;

[0087] D. In the reaction system container of step C, under stirring conditions, add the nano-sized titanium dioxide dispersion obtained in step B, the silanol-containing acrylic network copolymer, defoamer, multifunctional additive, antifreeze, film-forming aid, and the filler treated with coupling agent in step C. After high-speed stirring for 20-30 minutes, add thickener, anti-scratch aid, bactericide, and infrared reflective pigment. Stir at low speed for 5-10 minutes to obtain the odor-free, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor paint.

[0088] The silanol-containing acrylic network copolymer comprises the following components by weight percentage:

[0089] Sodium dodecyl sulfate 0.2%, nonylphenol polyoxyethylene ether 0.3%, methyl methacrylate 26%, butyl acrylate 23%, methacrylic acid 2%, N-hydroxymethylacrylamide 2%, hydroxyethyl acrylate 2.1%, ammonium persulfate 0.24%, defoamer 0.15%, antioxidant 0.15%, acylhydrazide compound 3%, vinyltriethoxysilane 0.6%, initiator BPO (benzoyl peroxide) 0.1%, chain transfer agent α-methylstyrene dimer AMSD 0.12%, ammonia 0.1%, deionized water to make up the balance; the sum of all components is 100%.

[0090] The acylhydrazine compounds include: oxalate dihydrazine, dioxalate dihydrazine, and adipic acid dihydrazine, with a weight ratio of oxalate dihydrazine:dioxalate dihydrazine:dipic acid dihydrazine of 1:1.2:1.5.

[0091] The silanol-containing acrylic network copolymer comprises the following preparation steps:

[0092] S1. Add deionized water to the reactor in proportion, and gradually add anionic emulsifier sodium dodecyl sulfate and nonionic emulsifier nonylphenol polyoxyethylene ether. Stir thoroughly to dissolve evenly and form an emulsion system.

[0093] S2. Methyl methacrylate, butyl acrylate, methacrylic acid, N-hydroxymethylacrylamide and hydroxyethyl acrylate are mixed in proportion to obtain a mixed monomer; the obtained mixed monomer is gradually added to the emulsion system in step S1 while stirring to ensure that the monomer emulsion is uniform.

[0094] S3. Dissolve ammonium persulfate in a small amount of deionized water according to the proportion to form an APS initiator solution for later use;

[0095] S4. Heat the emulsion system in the reactor from step S2 to 70–80°C while stirring; gradually add the APS initiator solution from step S3, controlling the dropping rate to avoid an overly vigorous reaction, and control the dropping time of the APS initiator solution to 2–3 hours; after the dropping is complete, continue to maintain the reaction at 70–80°C for 2–3 hours to ensure complete polymerization of the monomer; after polymerization is complete, cool the reaction system to room temperature; add an appropriate amount of defoamer and antioxidant, filter to remove gel or impurities, and obtain a stable self-crosslinking acrylic emulsion;

[0096] S5. Add an acylhydrazine compound to the self-crosslinking acrylic emulsion prepared in step S4 and mix thoroughly. After mixing thoroughly, add vinyltriethoxysilane, initiator BPO (benzoyl peroxide), and chain transfer agent α-methylstyrene dimer AMSD. Control the reaction temperature at 100-130°C and the reaction time at 2-3 hours. After the reaction is complete, add an appropriate amount of ammonia to adjust the pH of the emulsion to 7-9. Use a vacuum pump to reduce the vacuum and keep the vacuum gauge reading at 100 Pa. React under this vacuum for 2-4 hours and then stop the vacuuming to ensure that the residual free monomer content is low. Cool the reaction system to room temperature to obtain the silanol-containing acrylic network copolymer.

[0097] Examples 2-4 are prepared in the same way as Example 1, with the main difference being the specific raw materials and amounts used, as detailed in Table 2.

[0098] Comparative Example 1

[0099] Acrylic emulsion, dispersant, defoamer, multifunctional additive, antifreeze, film-forming aid, and deionized water were added sequentially to a suitable mixing tank and dispersed for 10 minutes at a speed of 600 rpm. Then, titanium dioxide, quartz powder, glass powder, and barium sulfate were dispersed at a stirring speed of 1500 rpm for 30 minutes until the fineness was qualified. Thickener, wetting and leveling agent, anti-scratch aid, bactericide, and deionized water were added to obtain Comparative Example 1. See Table 2 for details.

[0100] Table 2. Specific raw material composition (by weight) for the examples and comparative examples.

[0101]

[0102] The above embodiments and comparative examples were tested according to the technical requirements of S-type floor coating materials in GB / T 22374-2018 for volatile organic compound content, free formaldehyde, total volatile organic compound release, container state, drying time, pencil hardness, tensile bond strength, abrasion resistance, impact resistance, slip resistance, water resistance, acid resistance, alkali resistance, and oil resistance.

[0103] According to GB / T 1865-2009 Paints and Varnishes, artificial weathering and artificial radiation exposure to filtered xenon arc radiation, method 1 cycle A test is performed to test their resistance to artificial aging.

[0104] Odor level and odor dissipation time should be tested according to Q / LBZS 09-2021 for low-odor interior wall latex paint. The main technical requirements are as follows:

[0105] 1) The physical properties of the odor-free products meet the requirements specified in GB / T9756-2018 for the corresponding products;

[0106] 2) The limits for harmful substances in odor-free products should comply with the requirements for interior wall coatings in Table 1 of GB18582-2020;

[0107] 3) The odor evaluation performance requirements for odor-free latex paint (low-odor latex paint) shall meet the requirements of Table 3.

[0108] Table 3 Odor Requirements

[0109] project Require Odor level, Level ≤ 2 Odor dissipation time, hr≤ 8

[0110] Odor dissipation time test method: The test sample is applied to the substrate and placed in a glass / stainless steel odor test chamber with a length of 0.5m, a width of 0.4m, and a height of 0.5m. With the test chamber door, odor assessment chamber door, and ventilation valve all open, forced ventilation is carried out for 10 minutes using a fan, then all doors are closed, and the odor test chamber is sealed for 45 minutes. The odor test chamber door is then opened, and the odor testing team evaluates the odor within 5 minutes. Odor comparisons are performed every hour, and the odor level assessment is shown in Table 4.

[0111] Table 4 Odor Levels

[0112] Level Status Description Level 1 Odorless and undetectable Level 2 The odor is faint, but perceptible. Level 3 It has an odor, but no strong discomfort. Level 4 Strong unpleasant odor Level 5 It has an irritating and unpleasant odor.

[0113] According to JG / T 235-2014 Building Reflective Thermal Insulation Coatings (High Brightness), the solar reflectance, near-infrared reflectance, hemispherical emissivity, change rate of solar reflectance after pollution, and change rate of solar reflectance after artificial climate aging (%) (400h) were tested, and the results are shown in Table 5 below.

[0114] Table 5. Relevant performance test results of the examples and comparative examples.

[0115]

[0116]

[0117]

[0118] Experimental results show that the water-based floor paint of the present invention uses a self-made emulsion, which is modified by adding a certain amount of hydrazide compound, and then undergoes free radical polymerization with vinyltriethoxysilane under the action of chain transfer agent and initiator. At the same time, a vacuum pump is used for vacuum decompression to ensure that the residual free monomer content is low. After this treatment, the emulsion has a low odor, dries quickly, and has excellent wear resistance. It can be recoated in 1 hour, so that the paint film achieves early strength and fast drying, and the construction can be completed in 1 day, which greatly improves the construction efficiency. In Examples 2 to 4, with the increase of emulsion dosage and the addition of fillers and anti-scratch additives, the wear resistance can be improved to below 30mg.

[0119] The pigments and fillers in the water-based floor paint of the present invention are pretreated with titanate coupling agent, aluminate coupling agent and silane coupling agent, and then densely crosslinked with self-made resin to improve the grafting efficiency of hydroxyl groups. The final solar reflectance of Examples 2 to 4 is greater than 80%, with the highest reaching 93.5%, while the comparative example is less than 65%.

[0120] The water-based floor paint of the present invention uses a self-made silanol-containing acrylic network copolymer as the main resin, which can be used both indoors and outdoors. The coating prepared in Comparative Example 1 uses a conventional commercially available styrene-acrylic emulsion as the coating base, which has poor weather resistance, cannot form a cross-linked structure, and fails to meet the requirements of multiple indicators such as abrasion resistance and water immersion bonding strength. It also has poor pencil hardness and poor reflective heat insulation effect.

[0121] In summary, the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any changes, modifications, and evolutions made by those skilled in the art without departing from the scope of the present invention based on the disclosed technical content shall be considered equivalent embodiments of the present invention. Furthermore, any changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention shall still fall within the protection scope of the present invention.

[0122] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0123] Unless otherwise stated, the various optimized technical solutions in this invention can be combined with each other. Experimental methods not specifying specific conditions in the specification and examples are generally performed under conventional conditions or as recommended by the manufacturer.

[0124] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as are familiar to those skilled in the art. Furthermore, any methods and materials similar to or equivalent to those described herein may be used in the methods of this invention.

Claims

1. A single-component water-based floor paint with odorless wear resistance, infrared reflection, thermal insulation and fast drying, characterized in that: it comprises the following components by weight percentage: 40-70% of silanol-containing acrylic network copolymer, 0.5-2% of dispersant, 0.1-2% of defoaming agent, 0.1-2% of multifunctional additive, 0.1-2% of antifreeze agent, 0.1-8% of film-forming aid, 5-30% of pigment and filler, 0.01-2% of thickening agent, 0.01-2% of wetting and leveling agent, 0.01-2% of anti-scratch additive, 0.01-2% of bactericide, 0.01-2% of coupling agent, 1-15% of infrared reflective color paste, and the balance is deionized water; the sum of all components is 100%; the pigment and filler comprise pigment and filler; the pigment is rutile type nano titanium dioxide with a particle size of 15-50 nm and 200-500 nm; the coupling agent is a coupling agent diluted with edible alcohol in advance; the silanol-containing acrylic network copolymer comprises the following components by weight percentage: 0.1-2% of sodium dodecyl sulfate, 0.1-1.5% of nonylphenol polyoxyethylene ether, 20-40% of methyl methacrylate, 20-40% of butyl acrylate, 2-5% of methacrylic acid, 2-5% of N-hydroxymethyl acrylamide, 2-5% of hydroxyethyl acrylate, 0.1-0.5% of ammonium persulfate, 0.1-0.5% of defoaming agent, 0.1-1% of antioxidant, 2-10% of hydrazide compound, 0.1-2% of vinyl triethoxysilane, 0.1-1% of initiator BPO, 0.1-1% of chain transfer agent α-methyl styrene dimer, 0.1-0.5% of ammonia, and the balance is deionized water; the hydrazide compound comprises oxalyl dihydrazide, oxalic dihydrazide and adipic dihydrazide; the coupling agent is a combination of titanate coupling agent, aluminate coupling agent and silane coupling agent; the weight ratio of the titanate coupling agent, the aluminate coupling agent and the silane coupling agent in the coupling agent is 1-5: 1-5: 1-5. 2.The single-component water-based floor paint with odorless wear resistance, infrared reflection, thermal insulation and fast drying according to claim 1, characterized in that: the weight ratio of oxalyl dihydrazide, oxalic dihydrazide and adipic dihydrazide in the hydrazide compound is 1: 1.2: 1.

5. 3.The single-component water-based floor paint with odorless wear resistance, infrared reflection, thermal insulation and fast drying according to claim 1, characterized in that: it comprises one or a combination of the following features: the dispersant is a modified styrene-maleic acid copolymer solution; the multifunctional additive is 2-amino-2-methyl-1-propanol; the wetting and leveling agent is an organic silicon surfactant; the defoaming agent is a polymer composite mineral oil defoaming agent; the antifreeze agent is propylene glycol; the film-forming aid is an alcohol ester film-forming aid; the anti-scratch additive is an organic silicon anti-scratch additive; the filler in the pigment and filler is a combination of one or more of quartz powder, glass powder and barium sulfate. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The infrared reflective color paste is one or a combination of infrared reflective iron oxide black, infrared reflective chromium oxide green, infrared reflective iron oxide yellow, and infrared reflective iron oxide red. The thickening agent is a polyurethane-based, alkali-swellable, or a combination thereof.

4. The odorless, wear-resistant, reflective, thermal-insulating, and fast-drying single-component water-based floor paint according to claim 3, characterized in that: The particle size of the filler is one or a combination of 800 mesh, 1000 mesh, 1500 mesh, and 3000 mesh.

5. The odorless, wear-resistant, reflective, thermal-insulating, and fast-drying single-component water-based floor paint according to claim 1, characterized in that: The coupling agent is a titanate coupling agent, an aluminate coupling agent, and a silane coupling agent, which are diluted with edible alcohol to a volume concentration of 35% in a weight ratio of 1-5:1-5:1-5, and then used with the filler in the color and filler within 5 minutes.

6. The odorless, wear-resistant, reflective, thermal-insulating, and fast-drying single-component water-based floor paint according to claim 1, characterized in that: The acrylic reticular copolymer containing silanol comprises the following preparation steps: S1. Deionized water is added in a reaction kettle in a proportion, and sodium dodecyl sulfate and nonylphenol polyoxyethylene ether are gradually added and fully stirred to uniformly dissolve, forming an emulsion system; S2. Methyl methacrylate, butyl acrylate, methacrylic acid, N-hydroxymethyl acrylamide, and hydroxyethyl acrylate are mixed in a proportion to obtain a mixed monomer; the obtained mixed monomer is gradually added to the emulsion system in step S1, while stirring is maintained to ensure uniform emulsification of the monomer; S3. Ammonium persulfate is dissolved in a small amount of deionized water in a proportion to form an APS initiator solution for standby; S4. The emulsion system in the reaction kettle in step S2 is heated to 70-80°C while stirring is maintained; the APS initiator solution in step S3 is gradually added dropwise, the dropping speed is controlled to avoid excessive reaction, and the dropping time of the APS initiator solution is controlled to be 2-3 hours; after the dropping is completed, the reaction is continued at 70-80°C for 2-3 hours to ensure complete polymerization of the monomer; after the polymerization is completed, the reaction system is cooled to room temperature, an appropriate amount of defoaming agent and antioxidant are added, and the gel or impurities are removed by filtration to obtain a stable self-crosslinking acrylic emulsion; S5. The hydrazide compound is added to the self-crosslinking acrylic emulsion prepared in step S4 and mixed uniformly; after uniform mixing, vinyltriethoxysilane, initiator BPO, and chain transfer agent α-methylstyrene dimer are added, the reaction temperature is controlled to be 100-130°C, the reaction time is 2-3 hours, after the reaction is completed, an appropriate amount of ammonia water is added to adjust the pH value of the emulsion to 7-9, a vacuum pump is used for vacuum reduction, the vacuum gauge reading is maintained at 100 Pa, and the vacuum is maintained for 2-4 hours to end the vacuum, ensuring that the free monomer content is low; the reaction system is cooled to room temperature to obtain the acrylic reticular copolymer containing silanol.

7. A preparation method of the odorless, wear-resistant, reflective, thermal-insulating, and fast-drying single-component water-based floor paint according to claim 1, characterized in that: It comprises the following preparation steps: A. Under stirring conditions, add deionized water, dispersant, wetting and leveling agent into the container in proportion, respectively, stir at low speed for 5-10 minutes, then add pigments, stir for 10-15 minutes, to obtain pigment slurry; B. Transfer the mixed pigment slurry of step A to a sand mill, and the sanding medium is 0.3-2 mm zirconia beads; sand to the required fineness of the slurry, to obtain a nano-sized pigment dispersion slurry; C. Add coupling agent treated with edible alcohol dilution to the filler, stir at 50-100℃ for 2-4h, dry and cool naturally for standby; D. In the reaction system container of step C, add the nano-sized pigment dispersion slurry obtained in step B, silanol-containing acrylic network copolymer, defoaming agent, multifunctional additive, antifreeze agent, film-forming aid, filler treated with coupling agent in step C, stir at high speed for 20-30 minutes, then add thickening agent, anti-scratch additive, bactericide, infrared reflective color paste, stir at low speed for 5-10 minutes, to obtain the said odorless wear-resistant, reflective heat-insulating, fast-drying single-component water-based floor paint.

8. A construction method of the odorless wear-resistant, reflective heat-insulating, fast-drying single-component water-based floor paint of claim 1, characterized in that: It comprises the following steps: a. Base treatment: level, dry and clean the base surface to be constructed; b. Apply a closed primer: use the odorless wear-resistant, reflective heat-insulating, fast-drying single-component water-based floor paint as a primer, brush it on the base surface of step a, and form a primer layer after curing; c. Apply the paint: evenly apply the odorless wear-resistant, reflective heat-insulating, fast-drying single-component water-based floor paint on the primer layer of step b for two coats, and the interval between the two coats is 1 hour.

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