Odor-free wear-resistant reflective heat-insulating quick-drying single-component water-based floor paint as well as preparation method and application thereof

Abstract

According to the odorless, wear-resistant, reflective, heat-insulating and quick-drying single-component water-based floor paint as well as the preparation method and the application thereof, the single-component water-based floor paint comprises the following components in percentage by weight: 40-70% of a silanol-containing acrylic acid reticular copolymer, 0.5-2% of a dispersing agent, 0.1-2% of a defoaming agent, 0.1-2% of a multifunctional additive, 0.1-2% of an anti-freezing agent, 0.1-8% of a coalescing agent, 5-30% of pigment filler, 0.01-2% of a thickening agent, 0.01-2% of a wetting leveling agent and the balance of water. The coating is prepared from the following components in percentage by weight: 0.01-2% of an anti-scratch aid, 0.01-2% of a bactericide, 0.01-2% of a coupling agent, 1-15% of infrared reflection color paste and the balance of deionized The preparation process is simple, and the prepared floor coating not only has the properties of odor removal, wear resistance and reflective heat insulation, but also has the characteristics of excellent hardness, wear resistance, solvent resistance and aging resistance and quick drying.

Description

Technical Field

[0001] The present invention belongs to the technical field of water-based floor coatings, and in particular relates to a single-component water-based floor coating which is odorless, wear-resistant, reflective, heat-insulating and quick-drying, as well as a preparation method and application thereof. Background Art

[0002] In today's society, global warming is one of the great challenges facing mankind, and reducing organic emissions is a global trend. In recent years, solvent-based paints used on a large scale around the world use organic solvents as diluents, which have high volatile organic content and seriously harm the environment. Therefore, the research and development and use of water-based paints have become a general trend.

[0003] Traditional two-component water-based floor paints are mainly made of epoxy materials / polyurethane, aiming to achieve higher paint film hardness and meet the needs of specific scenarios.

[0004] On the basis of the prior art, the patent application CN104693926A discloses a method for preparing a water-based floor paint and a construction process for a water-based floor, and provides a water-based floor paint that can provide better brightness, wear resistance, flexibility, color retention and weather resistance, but its construction process is relatively complicated. After applying the water-based floor paint, it needs to be cured for a period of time before a layer of varnish can be applied, which has the disadvantage of a long construction period.

[0005] In addition, patent application publication CN105273597A discloses a water-based floor paint and a preparation method thereof, wherein the water-based floor paint provided is cured with a high-performance resin and a curing agent to form a film, and the paint film meets the national standard for water-based flooring and has the characteristics of high hardness, scratch resistance, and high leveling. However, the two components of the coating and the curing agent react quickly after mixing, and need to be mixed and used immediately, otherwise they will cure in a short time, resulting in material waste.

[0006] In the prior art, water-based epoxy / polyurethane coatings dry slowly in high humidity environments, and the paint film may become sticky again, and may cause problems such as blooming and overlap marks when exposed to water. In addition, if epoxy / polyurethane resins are exposed to sunlight for a long time, they may lose gloss and powder the paint film.

[0007] Therefore, it is a need for social development to develop a water-based one-component floor coating with simple construction process and complete functions. Summary of the invention

[0008] The purpose of the invention is to solve the problems existing in the prior art, and to provide a single-component water-based floor paint that is odorless, wear-resistant, reflective, heat-insulating, and fast-drying, a preparation method, and its application, which not only has the properties of odorless, wear-resistant, and reflective, heat-insulating, but also solves the problems of complex construction process, long construction period, poor environmental protection, and slow drying of floor paint in the prior art. The preparation process of the present invention is simple, and the prepared floor coating has excellent hardness, wear resistance, solvent resistance, and aging resistance, as well as the characteristics of fast drying, and can successfully realize industrial production.

[0009] The first object of the present invention is:

[0010] Provided is a single-component water-based floor paint that is odorless, wear-resistant, reflective, heat-insulating, and quick-drying, comprising the following components in weight percentage:

[0011] 40-70% of acrylic network copolymer containing silanol, 0.5-2% of dispersant, 0.1-2% of defoamer, 0.1-2% of multifunctional additive, 0.1-2% of antifreeze agent, 0.1-2% of film-forming additive, 5-30% of pigment and filler, 0.01-2% of thickener, 0.01-2% of wetting and leveling agent, 0.01-2% of anti-scratch additive, 0.01-2% of fungicide, 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%;

[0012] The color filler includes pigment and filler;

[0013] The pigment is rutile nano titanium dioxide, and the particle size is one or a combination of 15-50nm, 200-500nm;

[0014] The coupling agent is a coupling agent diluted with edible alcohol in advance;

[0015] The acrylic network copolymer containing silanol comprises the following components in 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-hydroxymethyl acrylamide 2-5%, hydroxyethyl acrylate 2-5%, ammonium persulfate 0.1-0.5%, defoamer 0.1-0.5%, antioxidant 0.1-1%, hydrazide compound 2-10%, vinyl triethoxy silane 0.1-2%, initiator BPO (dibenzoyl peroxide) 0.1-1%, chain transfer agent α-methyl styrene dimer (AMSD) 0.1-1%, ammonia water 0.1-0.5%, the balance is deionized water, and the sum of all components is 100%;

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

[0018] The nano-grade titanium dioxide is pre-dispersed by a sand mill to achieve a smaller particle size, which produces a synergistic effect with other powders with larger particle sizes. It has 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. 2 The size and distribution of the particles can reflect light of different wavelengths at the same time; TiO 2 The nanoscale size of the particles further enhances light reflection through multiple scattering, especially in the visible region.

[0020] 2.TiO 2 When the particle size is between 0.2 and 0.3 μm, the scattering efficiency of visible light is the highest and the shielding effect of ultraviolet light is also significant. 2 The particle size is optimized to maximize the reflection of visible light and ultraviolet light; at the same time, it has a narrow particle size distribution, which can reduce the light absorption loss caused by particles that are too large or too small, and improve the overall reflection efficiency.

[0021] 3. Generally, white pigments have better reflection effects on ultraviolet and visible light, but have poor reflection effects in the near infrared region. The titanium dioxide selected in the present invention is obtained by adjusting the TiO 2 The crystal phase ratio enhances the reflection ability in the 700-2500nm band.

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

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

[0024] In the hydrazide compound, the weight ratio of oxalic acid dihydrazide: oxalic acid dihydrazide: adipic acid dihydrazide is 1:1.2:1.5.

[0025] The odorless, wear-resistant, reflective, heat-insulating, fast-drying single-component water-based floor paint 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 auxiliary agent is 2-amino-2-methyl-1-propanol;

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

[0030] The wetting and leveling agent is preferably a silicone 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 anti-scratch additive is a silicone anti-scratch additive;

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

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

[0037] 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;

[0038] Traditional organic pigments absorb a lot of heat and have poor heat and weather resistance. Inorganic pigments are sun-resistant, heat-resistant, weather-resistant, have good solvent resistance, and have strong hiding power, including various metal oxides, chromates, carbonates, sulfates, and sulfides. Inorganic pigments are used to develop infrared reflective color pastes, such as iron oxide black, infrared reflective chromium oxide green, infrared reflective iron oxide yellow, and infrared reflective iron oxide red prepared from iron oxide / chromium in metal oxides. They can effectively reflect near-infrared rays, optimize light scattering and absorption control, have excellent spectral selection characteristics, can efficiently reflect solar heat, and effectively prevent solar heat from gathering on the surface of objects, thereby reducing the surface temperature of objects and significantly improving the thermal insulation performance of coatings while maintaining excellent color performance, which is superior to traditional organic pigments.

[0039] The thickener is a polyurethane thickener, an alkali swelling thickener or a combination thereof, preferably an alkali swelling thickener and a polyurethane thickener are used in combination;

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

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

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

[0043] The odorless, wear-resistant, reflective, heat-insulating, fast-drying single-component water-based floor paint 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 and greatly improve the crosslinking and hydroxyl group grafting efficiency.

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

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

[0047] The odorless, wear-resistant, reflective, heat-insulating, fast-drying single-component water-based floor paint 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 in proportion to the reactor, gradually add sodium lauryl sulfate and nonylphenol polyoxyethylene ether, stir well to dissolve them evenly to form an emulsified system;

[0050] S2. Methyl methacrylate, butyl acrylate, methacrylic acid, N-hydroxymethyl acrylamide and hydroxyethyl acrylate are mixed in proportion to obtain a mixed monomer; the mixed monomer is gradually added to the emulsified system in step S1 while stirring to ensure uniform emulsification of the monomers;

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

[0052] S4. Heat the emulsified system in the reactor in step S2 to 70-80° C. and keep stirring; gradually drip the APS initiator solution in step S3, control the dripping speed to avoid excessive reaction, and control the dripping time of the APS initiator solution to 2-3 hours; after the dripping is completed, continue to keep the reaction at 70-80° C. for 2-3 hours to ensure complete polymerization of the monomer; after the polymerization is completed, 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 hydrazide compound to the self-crosslinking acrylic emulsion prepared in step S4 and mix them evenly; after mixing evenly, add vinyl triethoxysilane, initiator BPO (dibenzoyl peroxide) and chain transfer agent α-methylstyrene dimer (AMSD), control the reaction temperature to 100-130°C, the reaction time to 2-3h, wait for the reaction to be completed, add appropriate amount of ammonia water to adjust the pH value of the emulsion to 7-9, use a vacuum pump to reduce the pressure, keep the vacuum gauge reading at 100Pa, react for 2-4h under this vacuum state, and then end the vacuuming to ensure that the residual monomer free content is low; cool the reaction system to room temperature to obtain the said silanol-containing acrylic network copolymer.

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

[0055] The technical solution of the present 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 react chemically during the drying process to form a strong crosslinking structure. After crosslinking, the hardness and wear resistance of the coating film are significantly improved. At the same time, these functional groups can react quickly during the drying process, so that the paint film can achieve early strength and fast drying.

[0056] The silanol-containing acrylic network copolymer prepared by the technical solution of the present invention has good thermoplasticity, high light transmittance at low thickness, and is suitable for uniform distribution of emulsion particles on the coating surface. When applied to the preparation of a single-component water-based floor paint, the cohesive energy density of the resin is reduced through self-crosslinking of the resin, thereby greatly improving the environmental protection, wear resistance, chemical resistance, weather resistance and other properties of the coating film.

[0057] The second object of the present invention is:

[0058] Provided is a method for preparing the above-mentioned one-component water-based floor paint which is odorless, wear-resistant, reflective, heat-insulating and fast-drying, 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 a low speed for 5 to 10 minutes, then add pigment and stir for 10 to 15 minutes to obtain pigment slurry;

[0060] B. Transfer the pigment slurry mixed in step A to a sand mill, wherein the sand milling medium is 0.3-2 mm zirconium oxide beads; sand mill until the slurry fineness meets the technical requirements to obtain a nano-scale pigment dispersion slurry;

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

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

[0063] The third invention object of the present invention is:

[0064] Provided is a construction method for the above-mentioned one-component water-based floor paint which is odorless, wear-resistant, reflective, heat-insulating and fast-drying, comprising the following steps:

[0065] a. Base surface treatment: level, dry and clean the base surface to be constructed;

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

[0067] c. Construction coating: Apply two coats of the odorless, wear-resistant, reflective, heat-insulating, quick-drying single-component water-based floor paint evenly on the primer layer in step b. The recoating interval is 1 hour.

[0068] Compared with the existing water-based floor paint technology, the technical solution of the present invention has the following technical features and advantages:

[0069] (1) The present invention is a single-component coating. Unlike conventional two-component water-based floor paints that require a curing agent for cross-linking and curing, the drying of the paint film is limited (affected by the amount of curing agent added, temperature and humidity, and ventilation environment). The silicone-containing acrylic network copolymer in the present invention can quickly complete drying and achieve dense cross-linking hardness during the volatilization process of its own moisture and co-solvent, shortening the drying cycle, making the construction convenient and easy to re-coat.

[0070] (2) The acrylic network copolymer containing silanol in the present invention is modified by adding a certain amount of hydrazide compound, and then free radical polymerization is carried out with vinyl triethoxysilane under the action of initiator BPO (dibenzoyl peroxide) and chain transfer agent α-methylstyrene dimer AMSD to obtain an acrylic copolymer containing carboxyl silanol. After this treatment, it can be cross-linked with rutile nano titanium dioxide and filler surface, improve the self-cross-linking 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.

[0071] (3) The rutile nano titanium dioxide in the present invention is subjected to a sand grinding and dispersion treatment during the preparation process and is compounded with a large-particle powder. This improves the wear resistance of the floor paint while providing reflective heat insulation and delaying resin aging, thereby achieving a durable effect. It can be used with infrared reflective color paste for color adjustment while maintaining excellent color performance and high reflective effect, thereby meeting the color adjustment needs of different customers.

[0072] (4) The filler in the present invention is pretreated with a titanate coupling agent, an aluminate coupling agent, or a silane coupling agent to produce a synergistic effect with the resin cross-linking, greatly improving the cross-linking and hydroxyl group grafting efficiency, and greatly improving the wear resistance and adhesion of the coating to the substrate.

[0073] (5) The pencil hardness of the coating obtained by coating the product of the present invention reaches H and the wear resistance is less than 30 mg. 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 silicone-containing acrylic network copolymer of the present invention can be used outdoors and has excellent weather resistance compared to conventional styrene acrylic and epoxy flooring, thus broadening the application scenarios. DETAILED DESCRIPTION

[0075] In order to make the application, technical scheme and advantages of the present invention more clear, the present invention is described in detail in conjunction with specific embodiments. It should be understood that the embodiments are only used to illustrate the present invention, but not to limit the protection scope of the present invention. All simple improvements to the preparation method of the present invention under the premise of the concept of the present invention belong to the protection scope of the present invention.

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

[0077] Table 1

[0078]

[0079]

[0080] Example 1

[0081] A method for preparing a single-component water-based floor paint that is odorless, wear-resistant, reflective, heat-insulating, and quick-drying, comprising 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 a low speed for 5 to 10 minutes, then add rutile nano titanium dioxide, stir for 10 to 15 minutes to obtain nano titanium dioxide slurry;

[0083] B. Transfer the nano titanium dioxide slurry mixed in step A to a sand mill, wherein the sand milling medium is 0.3-2 mm zirconium oxide beads; sand mill until the slurry fineness meets the technical requirements to obtain a nano-grade titanium dioxide dispersion slurry;

[0084] C. Add the coupling agent diluted with edible alcohol to the filler, stir at 50-100℃ for 2-4h, 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, add the nano-grade titanium dioxide dispersion slurry obtained in step B, the silicone-containing acrylic network copolymer, the defoamer, the multifunctional additive, the antifreeze agent, the film-forming additive, and the filler treated with the coupling agent in step C under stirring conditions, stir at high speed for 20 to 30 minutes, then add the thickener, the anti-scratch additive, the bactericide, and the infrared reflective color paste, stir at low speed for 5 to 10 minutes to obtain the odorless, wear-resistant, reflective, heat-insulating, and fast-drying single-component water-based floor paint.

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

[0089] Sodium dodecyl sulfate 0.2%, nonylphenol polyoxyethylene ether 0.3%, methyl methacrylate 26%, butyl acrylate 23%, methacrylic acid 2%, N-hydroxymethyl acrylamide 2%, hydroxyethyl acrylate 2.1%, ammonium persulfate 0.24%, defoamer 0.15%, antioxidant 0.15%, hydrazide compound 3%, vinyl triethoxy silane 0.6%, initiator BPO (dibenzoyl peroxide) 0.1%, chain transfer agent α-methyl styrene dimer AMSD 0.12%, ammonia water 0.1%, deionized water makes up the balance; the sum of all components is 100%;

[0090] The hydrazide compound comprises: oxalic acid dihydrazide, oxalic acid dihydrazide and adipic acid dihydrazide, and the weight ratio of oxalic acid dihydrazide: oxalic acid dihydrazide: adipic acid dihydrazide is 1:1.2:1.5.

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

[0092] S1. Add deionized water in proportion to the reactor, gradually add anionic emulsifier sodium lauryl sulfate and nonionic emulsifier nonylphenol polyoxyethylene ether, stir well to dissolve it evenly, and form an emulsified system;

[0093] S2. Methyl methacrylate, butyl acrylate, methacrylic acid, N-hydroxymethyl acrylamide and hydroxyethyl acrylate are mixed in proportion to obtain a mixed monomer; the mixed monomer is gradually added to the emulsified system in step S1 while stirring to ensure uniform emulsification of the monomers;

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

[0095] S4. Heat the emulsified system in the reactor in step S2 to 70-80° C. and keep stirring; gradually drip the APS initiator solution in step S3, control the dripping speed to avoid excessive reaction, and control the dripping time of the APS initiator solution to 2-3 hours; after the dripping is completed, continue to keep the reaction at 70-80° C. for 2-3 hours to ensure complete polymerization of the monomers; after the polymerization is completed, cool the reaction system to room temperature; add an appropriate amount of defoaming agent and antioxidant to filter and remove gel or impurities to obtain a stable self-crosslinking acrylic emulsion;

[0096] S5. Add hydrazide compound to the self-crosslinking acrylic emulsion prepared in step S4 and mix them evenly; after mixing evenly, add vinyl triethoxysilane, initiator BPO (dibenzoyl peroxide) and chain transfer agent α-methylstyrene dimer AMSD, control the reaction temperature to 100-130°C, the reaction time to 2-3h, wait for the reaction to be completed, add appropriate amount of ammonia water to adjust the pH value of the emulsion to 7-9, use a vacuum pump to reduce the pressure, keep the vacuum gauge reading at 100Pa, react under this vacuum state for 2-4h and then end the vacuuming to ensure that the residual monomer free content is low; cool the reaction system to room temperature to obtain the said silanol-containing acrylic network copolymer.

[0097] The preparation methods of Examples 2 to 4 are the same as those of Example 1, with the main differences being the specific raw materials and amounts used, as shown in Table 2 for details.

[0098] Comparative Example 1

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

[0100] Table 2 Specific raw material composition of the embodiments and comparative examples (weight percentage)

[0101]

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

[0103] Test the artificial weathering resistance according to the method 1 cycle A of GB / T 1865-2009 Paints and varnishes artificial weathering and artificial radiation exposure filtered xenon arc radiation;

[0104] According to Q / LBZS 09-2021, the odor level and odor dissipation time of odor-free interior latex paint (low odor interior latex paint) are tested. The main technical requirements are as follows:

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

[0106] 2) The limit values ​​of harmful substances in odorless products should comply with the requirements for interior wall coatings in Table 1 of GB18582-2020;

[0107] 3) The odor evaluation performance requirements of pure latex paint (low odor latex paint) shall comply with 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: paint the test sample on the substrate and place it 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 evaluation chamber door and ventilation valve all open, force ventilation with a fan for 10 minutes, then close all the doors and seal the odor test chamber for 45 minutes. Open the odor test chamber door, and the odor test team will evaluate the odor within 5 minutes. Perform odor comparison every 1 hour, and the odor level evaluation is shown in Table 4.

[0111] Table 4 Odor levels

[0112] Grade Level Status description Level 1 Odorless, undetectable Level 2 Slight odor but noticeable Level 3 There is an odor, but it is not strongly unpleasant Level 4 Strong unpleasant odor Level 5 Has a pungent, unpleasant odor

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

[0114] Table 5 Related performance test results of embodiments and comparative examples

[0115]

[0116]

[0117]

[0118] The experimental results show that the water-based floor paint of the present invention adopts a homemade emulsion, is modified by adding a certain amount of hydrazide compound, and then undergoes free radical polymerization with vinyl triethoxysilane under the action of a chain transfer agent and an initiator, and a vacuum pump is used for vacuum decompression to ensure that the residual monomer free content is low. After this treatment, the emulsion has a low odor, dries quickly, and has excellent wear resistance. At the same time, it 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, which greatly improves the construction efficiency. In Examples 2 to 4, with the increase in the amount of emulsion used, and with the combination of fillers and anti-scratch additives, the wear resistance can be increased to less than 30 mg.

[0119] The pigments and fillers in the water-based floor paint of the present invention are pretreated with a titanate coupling agent, an aluminate coupling agent, and a silane coupling agent, and are densely cross-linked with a homemade resin to improve the grafting efficiency of hydroxyl groups. Finally, the 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 has a main resin of a homemade silicone-containing acrylic network copolymer, which can be used indoors and outdoors. The paint prepared in Comparative Example 1 uses a conventional commercially available styrene-acrylic emulsion as a paint base material, has poor weather resistance, cannot produce a cross-linked structure, and fails to meet the standards in multiple indicators such as wear resistance and water immersion bonding strength, has poor pencil hardness, and has poor reflective heat insulation effects.

[0121] To sum up, the above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the disclosed technical content are regarded as equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

[0122] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 specified, the various optimization technical solutions in the present invention can be combined with each other. Experimental methods without specific conditions in the specification and examples are usually carried out under conventional conditions or conditions recommended by the manufacturer.

[0124] Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any method and material similar or equivalent to the described content can be applied to the method of the present invention.

Claims

1. A single-component water-based floor paint that is odorless, wear-resistant, reflective, heat-insulating, and quick-drying, characterized by: It includes the following components in weight percentage: 40-70% of acrylic network copolymer containing silanol, 0.5-2% of dispersant, 0.1-2% of defoamer, 0.1-2% of multifunctional additive, 0.1-2% of antifreeze agent, 0.1-2% of film-forming additive, 5-30% of pigment and filler, 0.01-2% of thickener, 0.01-2% of wetting and leveling agent, 0.01-2% of anti-scratch additive, 0.01-2% of fungicide, 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 color filler includes pigment and filler; The pigment is rutile nano titanium dioxide, and the particle size is one or a combination of 15-50nm, 200-500nm; The coupling agent is a coupling agent diluted with edible alcohol in advance; The acrylic network copolymer containing silanol comprises the following components in weight percentage: 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-hydroxymethyl acrylamide 2-5%, hydroxyethyl acrylate 2-5%, ammonium persulfate 0.1-0.5%, defoamer 0.1-0.5%, antioxidant 0.1-1%, hydrazide compound 2-10%, vinyl triethoxy silane 0.1-2%, initiator BPO 0.1-1%, chain transfer agent α-methyl styrene dimer 0.1-1%, ammonia water 0.1-0.5%, the balance is deionized water, and the sum of all components is 100%; The hydrazide compounds include: oxalic acid dihydrazide, oxalic acid dihydrazide and adipic acid dihydrazide.

2. The one-component water-based floor paint with zero odor, wear resistance, reflective heat insulation and quick drying according to claim 1 is characterized by: In the hydrazide compound, the weight ratio of oxalic acid dihydrazide: oxalic acid dihydrazide: adipic acid dihydrazide is 1:1.2:1.

5.

3. The odorless, wear-resistant, reflective, heat-insulating, fast-drying single-component water-based floor paint according to claim 1 is characterized by: It includes a combination of one or more of the following features: The dispersant is a modified styrene maleic acid copolymer solution; The multifunctional auxiliary agent is 2-amino-2-methyl-1-propanol; The wetting and leveling agent is an organic silicon surfactant; The defoamer is a polymer composite mineral oil defoamer; The antifreeze agent is propylene glycol; The film-forming aid is an alcohol ester film-forming aid; The anti-scratch additive is a silicone anti-scratch additive; The filler in the pigment filler is one or a combination 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 thickener is a polyurethane thickener, an alkali swelling thickener or a combination thereof; The coupling agent is one or a combination of titanate coupling agent, aluminate coupling agent and silane coupling agent.

4. The one-component water-based floor paint with zero odor, wear resistance, reflective heat insulation and quick drying according to claim 3 is characterized by: The particle size of the filler is one of 800 mesh, 1000 mesh, 1500 mesh, 3000 mesh or a combination of several thereof.

5. The one-component water-based floor paint with zero odor, wear resistance, reflective heat insulation and quick drying according to claim 3 is characterized by: The weight ratio of the titanate coupling agent: the aluminate coupling agent: the silane coupling agent in the coupling agent is 1-5:1-5:1-5.

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

7. The one-component water-based floor paint with zero odor, wear resistance, reflective heat insulation and quick drying according to claim 1 is characterized by: The silanol-containing acrylic network copolymer comprises the following preparation steps: S1. Add deionized water in proportion to the reactor, gradually add sodium lauryl sulfate and nonylphenol polyoxyethylene ether, stir well to dissolve them evenly to form an emulsified system; S2. Methyl methacrylate, butyl acrylate, methacrylic acid, N-hydroxymethyl acrylamide and hydroxyethyl acrylate are mixed in proportion to obtain a mixed monomer; the mixed monomer is gradually added to the emulsified system in step S1 while stirring to ensure uniform emulsification of the monomers; S3. Dissolve ammonium persulfate in a small amount of deionized water in proportion to form an APS initiator solution for standby use; S4. Heat the emulsified system in the reactor in step S2 to 70-80° C. and keep stirring; gradually drip the APS initiator solution in step S3, control the dripping speed to avoid excessive reaction, and control the dripping time of the APS initiator solution to 2-3 hours; after the dripping is completed, continue to keep the reaction at 70-80° C. for 2-3 hours to ensure complete polymerization of the monomer; after the polymerization is completed, 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; S5. Add hydrazide compound to the self-crosslinking acrylic emulsion prepared in step S4 and mix them evenly; after mixing evenly, add vinyl triethoxysilane, initiator BPO and chain transfer agent α-methylstyrene dimer, control the reaction temperature to 100-130°C, the reaction time to 2-3h, wait for the reaction to be completed, add appropriate amount of ammonia water to adjust the pH value of the emulsion to 7-9, use a vacuum pump to reduce the pressure, keep the vacuum gauge reading at 100Pa, react for 2-4h under this vacuum state, and then end the vacuuming to ensure that the residual monomer free content is low; cool the reaction system to room temperature to obtain the said silanol-containing acrylic network copolymer.

8. A method for preparing the odorless, wear-resistant, reflective, heat-insulating, 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, and wetting and leveling agent to the container in proportion, stir at a low speed for 5 to 10 minutes, then add pigment and stir for 10 to 15 minutes to obtain pigment slurry; B. Transfer the pigment slurry mixed in step A to a sand mill, wherein the sand milling medium is 0.3-2 mm zirconium oxide beads; sand mill until the slurry fineness meets the technical requirements to obtain a nano-scale pigment dispersion slurry; C. Add the coupling agent diluted with edible alcohol to the filler, stir at 50-100℃ for 2-4h, dry and cool naturally for later use; D. In the reaction system container of step C, add the nano-pigment dispersion slurry obtained in step B, the acrylic network copolymer containing silanol, the defoamer, the multifunctional additive, the antifreeze agent, the film-forming aid, and the filler treated with the coupling agent in step C under stirring conditions, stir at high speed for 20 to 30 minutes, add the thickener, the anti-scratch additive, the bactericide, and the infrared reflective color paste, stir at low speed for 5 to 10 minutes, and obtain the odorless, wear-resistant, reflective, heat-insulating, and quick-drying single-component water-based floor paint.

9. A construction method for the odorless, wear-resistant, reflective, heat-insulating, fast-drying single-component water-based floor paint according to claim 1, characterized in that: It includes the following steps: a. Base surface 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, apply it on the surface of the base layer described in step a, and form a primer layer after curing; c. Construction coating: Apply two coats of the odorless, wear-resistant, reflective, heat-insulating, quick-drying single-component water-based floor paint evenly on the primer layer in step b. The recoating interval is 1 hour.

Images