Nanometer waterborne single-component white coating material, preparation method and application thereof

Abstract

The present disclosure relates to the technical field of water-based materials, and provides a nano water-based single-component white coating material, a preparation method and application thereof. The raw materials of the nano water-based single-component white coating material include, by weight, 50-60 parts of water-based acrylic emulsion, 0.5-1 part of a first defoaming agent, 0.5-1 part of a first dispersing agent, 0.5-1.5 parts of a thickening agent, 25-30 parts of titanium white paste, 1-3 parts of organic matting powder, 3-5 parts of a wax additive, 5-10 parts of a film-forming additive, 1-3 parts of a nano material, and 1-10 parts of water. The nano water-based single-component white coating material provided by the present disclosure can improve the liquid resistance, gloss, hardness, compactness, stain resistance, yellowing resistance, adhesion and construction performance by limiting the components and their proportions of the raw materials.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of water-based materials, in particular to a nano water-based single-component white surface material and a preparation method and application thereof. BACKGROUND

[0002] Under the background that the environmental protection policy in China is gradually improved and the health awareness of residents is gradually improved, water-based materials have developed rapidly in application fields such as industry, home decoration and wood, thereby emerging sub-products for different application fields. At present, the application of water-based materials on home decoration and ordinary furniture has been successful, which makes the market share of water-based materials gradually increase. However, for some medium and high-end furniture (for example, bathroom, cabinet) in the field, the demand for the cost and performance (for example, liquid resistance, hardness, stain resistance, etc.) of the material is difficult for water-based single-component materials to meet; and the effect of water-based single-component paint is particularly poor, so the market is quite blank.

[0003] For this purpose, Chinese patent document CN201911376741.9, application date 2019.12.27, entitled "a water-based single-component white surface material and a preparation method and application thereof", discloses a water-based single-component white surface material, which comprises, by weight parts: polyacrylic acid emulsion 30-40 parts, polyurethane emulsion 10-20 parts, defoaming agent 0.1-0.5 parts, wetting dispersant 1-5 parts, thickening agent 0.5-1.5 parts, titanium white paste 25-30 parts, organic matting powder 1-3 parts, fischer-tropsch wax 3-5 parts, film-forming aid 5-10 parts, pH adjuster 0.1-0.2 parts, bactericide 0.1-0.2 parts and water 5-10 parts. The water-based single-component white surface material provided by the above patent document overcomes the problems of poor water resistance, low fullness and poor adhesion of existing water-based single-component white surface materials, and also improves the yellowing resistance and construction performance of the water-based single-component white surface material. However, the above patent document does not mention how to simultaneously improve the liquid resistance, gloss, hardness, density, stain resistance, yellowing resistance, adhesion and construction performance of the water-based single-component white surface material.

[0004] In summary, there is an urgent need for a water-based single-component white surface material to at least achieve the effect of simultaneously improving the liquid resistance, gloss, hardness, density, stain resistance, yellowing resistance, adhesion and construction performance. SUMMARY

[0005] The purpose of the present disclosure is to overcome the deficiencies in the prior art, and to provide a nano water-based single-component white surface material and a preparation method and application thereof, to at least achieve the effect of simultaneously improving the liquid resistance, gloss, hardness, density, stain resistance, yellowing resistance, adhesion and construction performance.

[0006] The purpose of the present disclosure is achieved by the following technical solutions:

[0007] In one aspect, a nano-aqueous single-component white coating material is provided. The raw materials of the nano-aqueous single-component white coating material include, by weight parts, 50-60 parts of an aqueous acrylic emulsion, 0.5-1 part of a first defoaming agent, 0.5-1 part of a first dispersing agent, 0.5-1.5 parts of a thickening agent, 25-30 parts of titanium white paste, 1-3 parts of an organic matting powder, 3-5 parts of a wax aid, 5-10 parts of a film-forming aid, 1-3 parts of a nano-material, and 1-10 parts of water.

[0008] In the above embodiments, by limiting the components of the raw materials and their proportions, at least the effects of simultaneously improving the liquid resistance, gloss, hardness, compactness, stain resistance, adhesion, and construction performance of the nano-aqueous single-component white coating material are achieved; at the same time, the raw materials use a pure acrylic structure (i.e., the aqueous acrylic emulsion) as the main film-forming material, thus also improving the yellowing resistance of the nano-aqueous single-component white coating material.

[0009] In some embodiments, the raw materials of the nano-aqueous single-component white coating material include, by weight parts, 55 parts of the aqueous acrylic emulsion, 1 part of the first defoaming agent, 0.5 part of the first dispersing agent, 0.7 part of the thickening agent, 25 parts of the titanium white paste, 1.5 parts of the organic matting powder, 3 parts of the wax aid, 5 parts of the film-forming aid, 3 parts of the nano-material, and 5.3 parts of the water.

[0010] In some examples, the water can be deionized water.

[0011] In some embodiments, the aqueous acrylic emulsion is a core-shell copolymer emulsion; wherein the core-shell copolymer emulsion includes a core layer and a shell layer wrapped outside the core layer; the core layer uses a phenylethyl acrylate, a polybutadiene, and a divinylbenzene monomer; and the shell layer uses a polymethyl methacrylate monomer.

[0012] In some examples, the solid content of the aqueous acrylic emulsion is 44% ± 1%.

[0013] In some examples, the fineness of the aqueous acrylic emulsion is less than or equal to 15 μm.

[0014] In some examples, the minimum film-forming temperature of the aqueous acrylic emulsion is approximately 55°C.

[0015] In the above embodiments, the poly(methyl methacrylate) monomer is used in the shell layer, the phenylethyl acrylate and the polybutadiene are used in the core layer, and the divinylbenzene monomer is added as a crosslinking agent to control the grafting rate of the poly(methyl methacrylate) monomer on the polybutadiene, so that the self-crosslinking water-based acrylic emulsion with a gradient structure can be obtained, thereby improving the glass transition temperature of the water-based acrylic emulsion, and at least achieving the effects of improving the hardness, liquid resistance and adhesion of the nano water-based one-component white coating material.

[0016] It should be noted that there are many products that can be selected for the water-based acrylic emulsion, and any product that can meet the description of any one of the above embodiments is covered within the protection scope of the present disclosure. For example, the water-based acrylic emulsion can be XK-118XP of Covestro Co., Ltd. in Germany. XK-118XP.

[0017] In some embodiments, the nano material includes nano aluminum oxide.

[0018] In the above embodiments, by adding the nano aluminum oxide, the compactness and scratch resistance of the nano water-based one-component white coating material can be further improved, thereby further improving the performance of the nano water-based one-component white coating material.

[0019] In some embodiments, the raw materials of the titanium white paste include, by weight parts, 70-80 parts of titanium white powder, 5-10 parts of a second dispersing agent, 0.1-0.3 parts of a second defoaming agent, 0.1-0.2 parts of a mildew-proof fungicide, and 10-18 parts of deionized water. For example, the weight parts of the titanium white powder can be 75 parts.

[0020] In some examples, the raw materials of the titanium white paste include, by weight parts, 75 parts of the titanium white powder, 7.5 parts of the second dispersing agent, 0.1 part of the second defoaming agent, 0.1 part of the mildew-proof fungicide, and 17.3 parts of the deionized water.

[0021] In some examples, the method for preparing the titanium white paste includes: mixing the deionized water, the second defoaming agent, the second dispersing agent and the mildew-proof fungicide, and performing third dispersion to obtain an intermediate product; and mixing the titanium white powder and the intermediate product, and performing fourth dispersion until the fineness is less than or equal to 15 μm to obtain the titanium white paste.

[0022] For example, the rotation speed of the third dispersion is 1000-1200 rpm, and the time of the third dispersion is 5-10 min.

[0023] For example, the rotation speed of the fourth dispersion is 1200-1500 rpm, and the time of the fourth dispersion is 20-30 min.

[0024] In some examples, the titanium dioxide includes a rutile titanium dioxide.

[0025] For example, the rutile titanium dioxide can be a chlorination method rutile titanium dioxide, such as titanium dioxide R-895 or titanium dioxide CR-510.

[0026] In some examples, the second defoaming agent includes at least one of an organosilicone defoaming agent, a polyether defoaming agent, and a polyether-modified silicone defoaming agent.

[0027] For example, the second defoaming agent can include at least one of BYK-094 (a defoaming polysiloxane solution) by BYK, Germany, BYK-024 (a defoaming polysiloxane solution) by BYK, Germany, TEGO Foamex 810 (a polysiloxane-polyether copolymer) by EVONIK, Germany, and TEGO Airex 902W (a polyether siloxane copolymer emulsion) by EVONIK, Germany.

[0028] In some examples, the second dispersant includes at least one of an anionic dispersant, a non-ionic dispersant, and a multi-functional dispersant.

[0029] For example, the anionic dispersant can not include a solvent and an ethoxylated nonylphenol.

[0030] For example, the second dispersant can include at least one of TEGO Dispers 715W (an anionic sodium polyacrylate) by TEGO, Germany, and DISPERBYK-190 (a modified styrene maleic acid copolymer solution) by BYK, Germany.

[0031] In some examples, the mildewcide can be MV mildewcide by SHUR, UK.

[0032] In some examples, the first defoaming agent includes at least one of an organosilicone defoaming agent, a polyether defoaming agent, and a polyether-modified silicone defoaming agent.

[0033] In some examples, the first defoaming agent includes at least two of the organosilicone defoaming agent, the polyether defoaming agent, and the polyether-modified silicone defoaming agent. In this case, the first defoaming agent is a composite defoaming agent.

[0034] For example, the first defoaming agent can include at least two of BYK-094 (a defoaming polysiloxane solution) of BYK, Germany, BYK-024 (a defoaming polysiloxane solution) of BYK, Germany, TEGO Foamex 810 (a polysiloxane-polyether copolymer) of EVONIK, Germany, and TEGO Airex 902W (a polyether siloxane copolymer emulsion) of EVONIK, Germany.

[0035] In some embodiments, the first dispersant includes at least one of an anionic dispersant, a nonionic dispersant, and a multifunctional dispersant.

[0036] In some examples, the anionic dispersant can not include a solvent and an ethoxylated nonylphenol.

[0037] In some examples, the first dispersant can include at least one of TEGO Dispers 715W (an anionic sodium polyacrylate) of TEGO, Germany, and DISPERBYK-190 (a modified styrene maleic acid copolymer solution) of BYK, Germany.

[0038] In some embodiments, the thickening agent includes at least one of an acrylic thickening agent, a polyurethane thickening agent, and a cellulose ether thickening agent.

[0039] In some examples, the thickening agent includes at least two of the acrylic thickening agent, the polyurethane thickening agent, and the cellulose ether thickening agent. At this time, the thickening agent is a composite thickening agent.

[0040] For example, the thickening agent can include at least two of Thixol 53L (an acrylic copolymer solution) of COATEX, France, Coapur 830W (a nonionic water-based polyurethane) of COATEX, France, a thickening agent RM-8W, TT-935 of Rohm & Haas, USA, and a hydroxyethyl cellulose ether thickening agent of Clariant, Switzerland.

[0041] In some embodiments, the organic matting powder includes a thermosetting polymethyl urea resin.

[0042] In the above embodiments, the thermosetting polymethyl urea resin is used as the organic matting powder, which not only reduces the water permeability of the nano-aqueous single-component white coating material, thereby improving the liquid resistance of the nano-aqueous single-component white coating material, but also improves the scratch resistance and weather resistance of the nano-aqueous single-component white coating material.

[0043] For example, the thermosetting polymethyl urea resin can be M6 of Yupo, USA.

[0044] In some embodiments, the wax aid includes modified paraffin wax.

[0045] For example, the modified paraffin wax can include at least one of BYK-539 from BYK, Germany and E-360 from Keim-additec, Germany.

[0046] In the above embodiments, the wax aid can improve the hand feeling and hydrophobicity of the nano-aqueous single-component white coating material, so that the nano-aqueous single-component white coating material has smooth and delicate hand feeling and is more comfortable and beautiful under naked eye observation.

[0047] In some embodiments, the film-forming aid includes at least one of dipropylene glycol methyl ether, dipropylene glycol butyl ether and diethylene glycol butyl ether.

[0048] In some examples, the film-forming aid includes the dipropylene glycol methyl ether and the dipropylene glycol butyl ether. For example, the mass ratio of the dipropylene glycol methyl ether to the dipropylene glycol butyl ether can be 1:1.

[0049] It is worth noting that the nano-aqueous single-component white coating material provided by the present disclosure first uses the self-crosslinking aqueous acrylic emulsion with gradient structure as the main film-forming material, and is matched with the nano-material, so that the nano-material is crosslinked to form a polymer with high strength structure, thereby achieving the effect of at least improving the liquid resistance, hardness, compactness, adhesion and construction performance of the nano-aqueous single-component white coating material. On this basis, by using the thermosetting polymethylurea resin as the organic matting powder, the water permeability of the nano-aqueous single-component white coating material can be reduced, thereby further improving the liquid resistance of the nano-aqueous single-component white coating material.

[0050] It should be noted that the water resistance and the liquid resistance mentioned in the present disclosure are different. Specifically, the water resistance refers to the stability of the material when it contacts water; the liquid resistance refers to the stability of the material when it contacts various liquids (for example, water, acid, base and alcohol), which includes but is not limited to water resistance, acid resistance, base resistance and alcohol resistance.

[0051] On the other hand, a method for preparing the nano-aqueous single-component white coating material according to any one of the above embodiments is provided. The method includes: mixing a part of the thickening agent, the aqueous acrylic emulsion, the first defoaming agent and the first dispersing agent to perform first dispersion until no oil shrinkage occurs, to obtain a first product; mixing the organic matting powder and the first product to perform second dispersion, to obtain a second product with a fineness of less than or equal to 35 pm; and uniformly mixing the remaining part of the thickening agent, the titanium white paste, the film-forming aid, the wax aid, the nano-material, the water and the second product to obtain the nano-aqueous single-component white coating material.

[0052] It should be noted that the part of the thickening agent and the remaining part of the thickening agent in the method can be allocated according to the situation, and the present disclosure does not limit this.

[0053] For example, in the case where the thickening agent includes two of the acrylic thickening agent, the polyurethane thickening agent and the cellulose ether thickening agent, the part of the thickening agent can be all of one kind of thickening agent, and the remaining part of the thickening agent can be all of another kind of thickening agent.

[0054] For another example, in the case where the thickening agent includes only one of the acrylic thickening agent, the polyurethane thickening agent and the cellulose ether thickening agent, the part of the thickening agent can be a part of the thickening agent, and the remaining part of the thickening agent can be a remaining part of the thickening agent.

[0055] For further example, in the case where the thickening agent includes at least two of the acrylic thickening agent, the polyurethane thickening agent and the cellulose ether thickening agent, the part of the thickening agent can be a part of each kind of thickening agent, and the remaining part of the thickening agent can be a remaining part of each kind of thickening agent.

[0056] In some embodiments, the rotation speed of the first dispersion is 1200-1500 rpm, and the time of the first dispersion is 10-15 min.

[0057] In some embodiments, the rotation speed of the second dispersion is 1000-1200 rpm, and the time of the second dispersion is 5-10 min.

[0058] In some embodiments, the weight ratio of the part of the thickening agent to the remaining part of the thickening agent is 4-6:2-5.

[0059] In another aspect, the present disclosure provides an application of the nanometer water-based single-component white paint material or the method according to any one of the above embodiments in a paint of furniture.

[0060] In some embodiments, the furniture includes at least one of a bathroom and a cabinet.

[0061] It should be noted that when the nanometer water-based single-component white paint material is applied, methods known to those skilled in the art can be used. For example, the nanometer water-based single-component white paint material can be mixed with water in a certain proportion according to actual needs, and then sprayed on the furniture (for example, the bathroom or the cabinet).

[0062] The present disclosure has the following beneficial effects:

[0063] 1. A nano-aqueous single-component white coating material of the present disclosure, by limiting the components of the raw materials and their proportions, at least achieves the effect of simultaneously improving the liquid resistance, gloss, hardness, density, stain resistance, adhesion and construction performance of the nano-aqueous single-component white coating material; at the same time, the raw material uses pure acrylic structure (i.e. the aqueous acrylic emulsion) as the main film-forming material, so it can also improve the yellowing resistance of the nano-aqueous single-component white coating material.

[0064] 2. A nano-aqueous single-component white coating material of the present disclosure is an aqueous environmentally friendly product, which meets the standards of Harmful Substance Limitation for Wood Coatings 《GB 18581-2020》, Indoor Decoration and Decoration Waterborne Wood Coatings 《GB / T 23999-2009》, and Wood Furniture Technical Requirements 《GB / T 3324-2017》. DETAILED DESCRIPTION

[0065] The technical solutions in some embodiments of the present disclosure will be described below. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all. Based on the embodiments provided by the present disclosure, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present disclosure.

[0066] Hereinafter, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features.

[0067] As used herein, "approximately" includes the stated value and the mean value within an acceptable deviation range of the specific value, wherein the acceptable deviation range is determined by those of ordinary skill in the art considering the measurement being discussed and the error related to the measurement of the specific quantity (i.e. the limitation of the measurement system).

[0068] In describing some embodiments, the expression "A and / or B" can be used. It is easily understood that "A and / or B" includes the following three combinations: only A, only B, and the combination of A and B.

[0069] In describing some embodiments, the expressions "at least one of A, B, and C" and "at least one of A, B, or C" can be used, both of which have the same meaning and include the following combinations of A, B, and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C.

[0070] Embodiment 1

[0071] 1.A nano-aqueous single-component white coating material, raw materials of which comprise, by weight parts:

[0072]

[0073]

[0074] wherein the film-forming aid is dipropylene glycol methyl ether and dipropylene glycol butyl ether in a mass ratio of 1:1;

[0075] Raw materials of the titanium white paste comprise, by weight parts:

[0076]

[0077] 2.A method for preparing the nano-aqueous single-component white coating material, comprising S1-S2.

[0078] S1.Preparation of the titanium white paste, comprising:

[0079] S11.Taking deionized water, defoamer BYK-024, dispersant DISPERBYK-190, and mildewcide MV, mixing, and dispersing at a speed of 1200 rpm for 10 min to obtain an intermediate product; and

[0080] S12.Taking titanium white powder R-895 and the intermediate product, mixing, and dispersing at a speed of 1500 rpm for 30 min until the fineness is less than or equal to 15 μm, and the product is obtained; wherein the mass fraction of the titanium white powder in the titanium white paste is 75%, and no delamination and coarsening are observed at 50℃ / 7d.

[0081] S2.Preparation of the nano-aqueous single-component white coating material, comprising:

[0082] S21.Taking thickening agent Coapur 830W, water-based acrylic emulsion XK-118XP, defoamer TEGOFoamex 810, defoamer BYK-024, and first dispersant TEGO Dispers 715W, mixing, and dispersing at a speed of 1500 rpm for 10 min until no oil shrinkage is observed to obtain a first product;

[0083] S22.Taking organic matting powder M6 and the first product, mixing, and dispersing at a speed of 1200 rpm for 5 min to obtain a second product with a fineness of less than or equal to 35 μm; and

[0084] S23.Taking thickening agent RM-8W, 75% titanium white paste, film-forming aid, wax aid BYK-539, nano-alumina, water, and the second product, mixing uniformly, adjusting to a standard viscosity, and packaging for inspection.

[0085] Example 2

[0086] 1. A nano-aqueous single-component white coating material, raw materials of which include, by weight parts:

[0087]

[0088]

[0089] wherein the film forming aid is dipropylene glycol methyl ether and dipropylene glycol butyl ether at a mass ratio of 1:1;

[0090] 2. A method for preparing the nano-aqueous single-component white coating material, comprising: S1-S2.

[0091] S1. Preparation of titanium white paste, which is the same as the method for preparing titanium white paste in Example 1.

[0092] S2. Preparation of the nano-aqueous single-component white coating material, comprising:

[0093] S21. Take thickening agent Coapur 830W, water-based acrylic emulsion XK-118XP, defoaming agent BYK-094, defoaming agent TEGOAirex 902W and first dispersing agent TEGO Dispers 715W are mixed and dispersed at a speed of 1500 rpm for 10 min until no oil shrinkage, to obtain a first product;

[0094] S22. Take organic matting powder M6 and mix with the first product, disperse at a speed of 1200 rpm for 5 min, to obtain a second product with a fineness of less than or equal to 35 μm; and

[0095] S23. Take thickening agent RM-8W, 75% titanium white paste, film forming aid, wax aid E-360, nano-alumina, water and mix with the second product uniformly, adjust to standard viscosity and package for inspection.

[0096] Example 3

[0097] 1. A nano-aqueous single-component white coating material, raw materials of which include, by weight parts:

[0098]

[0099]

[0100] wherein the film forming aid is dipropylene glycol methyl ether and dipropylene glycol butyl ether at a mass ratio of 1:1;

[0101] Raw materials of the titanium white paste include, by weight parts:

[0102]

[0103] 2. A method for preparing the above-mentioned nano-aqueous single-component white coating material, comprising: S1-S2.

[0104] S1. Preparation of titanium white paste, comprising:

[0105] S11. Take deionized water, defoaming agent BYK-094, dispersant DISPERBYK-190, and fungicide MV, and mix them, disperse them at a speed of 1200 rpm for 10 min to obtain an intermediate product; and

[0106] S12. Take titanium white powder CR-510 and the intermediate product, mix them, and disperse them at a speed of 1500 rpm for 30 min until the fineness is less than or equal to 15 μm, and the product is obtained; wherein the mass fraction of titanium white powder in the titanium white paste is 75%, and no delamination and coarsening phenomenon is observed at 50°C / 7d.

[0107] S2. Preparation of the nano-aqueous single-component white coating material, comprising:

[0108] S21. Take thickening agent Coapur 830W, aqueous acrylic emulsion XK-118XP, defoaming agent BYK-094, defoaming agent TEGOAirex 902W, and first dispersant TEGO Dispers 715W, mix them, and disperse them at a speed of 1500 rpm for 10 min until no oil shrinkage occurs, to obtain a first product;

[0109] S22. Take organic matting powder M6 and the first product, mix them, and disperse them at a speed of 1200 rpm for 5 min to obtain a second product with a fineness of less than or equal to 35 μm; and

[0110] S23. Take thickening agent RM-8W, 75% titanium white paste, film-forming aid, wax aid E-360, nano-alumina, water, and the second product, mix them uniformly, and adjust them to a standard viscosity for packaging and inspection.

[0111] Comparative Example 1

[0112] The present disclosure embodiment 1 and comparative example 1 are compared, wherein the difference between comparative example 1 and embodiment 1 is:

[0113] 1) Replace 55 parts of aqueous acrylic emulsion XK-118XP with 60 parts of SETAQUA 6785 of Zhenxin Company;

[0114] 2) Replace 5.3 parts of water with 0.3 parts of water;

[0115] The other conditions such as the selection and amount of components, the steps and parameters of the method, etc. are the same as those in Example 1 of the present disclosure (compared with Example 1, the water-based acrylic emulsion selected in the present disclosure is replaced by a common emulsion on the market, which is used to prove that the nano water-based single-component white coating material of the present disclosure has better effect).

[0116] It should be noted that, since the content of effective components (solid content) in SETAQUA 6785 of Zhanxin Company is lower than that of water-based acrylic emulsion XK-118XP, 55 parts of water-based acrylic emulsion XK-118XP is replaced by 60 parts of SETAQUA 6785 of Zhanxin Company. Therefore, the total amount of effective components in 55 parts of water-based acrylic emulsion XK-118XP is roughly equal to the total amount of effective components in 60 parts of SETAQUA 6785 of Zhanxin Company. Therefore, the total amount of effective components in 55 parts of water-based acrylic emulsion XK-118XP is roughly equal to the total amount of effective components in 60 parts of SETAQUA 6785 of Zhanxin Company.

[0117] Comparative Example 2

[0118] Comparative Example 2 is compared with Example 1 of the present disclosure, wherein the difference between Comparative Example 2 and Example 1 is that:

[0119] 1) 55 parts of water-based acrylic emulsion XK-118XP is replaced by 60 parts of AC 3660 of Oubodui Company; Therefore, the total amount of effective components in 55 parts of water-based acrylic emulsion XK-118XP is roughly equal to the total amount of effective components in 60 parts of SETAQUA 6785 of Zhanxin Company.

[0120] 2) 5.3 parts of water is replaced by 0.3 parts of water;

[0121] The other conditions such as the selection and amount of components, the steps and parameters of the method, etc. are the same as those in Example 1 of the present disclosure (compared with Example 1, the water-based acrylic emulsion selected in the present disclosure is replaced by a common emulsion on the market, which is used to prove that the nano water-based single-component white coating material of the present disclosure has better effect).

[0122] It should be noted that, since the content of effective components (solid content) in AC 3660 of Oubodui Company is lower than that of water-based acrylic emulsion XK-118XP, Therefore, the total amount of effective components in 55 parts of water-based acrylic emulsion XK-118XP is roughly equal to the total amount of effective components in 60 parts of SETAQUA 6785 of Zhanxin Company. Therefore, the total amount of effective components in 55 parts of water-based acrylic emulsion XK-118XP is roughly equal to the total amount of effective components in 60 parts of SETAQUA 6785 of Zhanxin Company.

[0123] Comparative Example 3

[0124] Comparative Example 3 is compared with Example 1 of the present disclosure, wherein the difference between Comparative Example 3 and Example 1 is that:

[0125] 1) 1.5 parts of organic matting powder M6 is replaced by 1.1 parts of SY-7000 of Grace Company;

[0126] 2) 5.3 parts of water is replaced by 5.7 parts of water;

[0127] Other conditions such as the selection and amount of components, and the steps and parameters of the method are the same as those in Example 1 of the present disclosure (compared to Example 1, the organic matting powder selected in the present disclosure is replaced by a common matting powder on the market, which is used to prove that the nano-aqueous single-component white coating material of the present disclosure has better effect).

[0128] Comparative Example 4

[0129] Comparative Example 4 is compared with Example 1 of the present disclosure, wherein the difference between Comparative Example 4 and Example 1 is that:

[0130] 1) no nano-alumina is added;

[0131] 2) 1.5 parts of organic matting powder M6 is replaced by 1.1 parts of SY-7000 of Grace Company;

[0132] 3) 5.3 parts of water is replaced by 8.7 parts of water;

[0133] Other conditions such as the selection and amount of components, and the steps and parameters of the method are the same as those in Example 1 of the present disclosure (compared to Example 1, the organic matting powder selected in the present disclosure is replaced by a common matting powder on the market, and no nano-alumina is added, which is used to prove that the nano-aqueous single-component white coating material of the present disclosure has better effect).

[0134] Comparative Example 5

[0135] Comparative Example 5 is compared with Example 1 of the present disclosure, wherein the difference between Comparative Example 5 and Example 1 is that:

[0136] 1) no nano-alumina is added;

[0137] 2) 5.3 parts of water is replaced by 8.3 parts of water;

[0138] Other conditions such as the selection and amount of components, and the steps and parameters of the method are the same as those in Example 1 of the present disclosure (compared to Example 1, no nano-alumina is added, which is used to prove that the nano-aqueous single-component white coating material of the present disclosure has better effect).

[0139] Test Effect

[0140] 1. The materials in Examples 1-3 and Comparative Examples 1-5 are respectively subjected to factory detection, and the indexes of the factory detection are shown in the following table:

[0141] Item Viscosity (25°C) KU Fineness μm State Solid content % Application method pH Index 75～80 ≤35 White viscous liquid 45～50 Direct application 7.5～8.5

[0142] The detection results are shown in the following table:

[0143]

[0144] 2. In order to verify the effect of the nano-aqueous single-component white coating material of the present disclosure, the performance of the materials in Examples 1-3 and Comparative Examples 1-5 was detected respectively. The detection method is as follows:

[0145] Spraying tests were performed on each group of samples to evaluate their performance, and the spraying tests were performed on melamine substrates of 20 cm x 30 cm x 2 cm. The specific operation method is manual spraying by direct construction, and the net coating amount is 120-130 g / m 2 .

[0146] 1) The detection results of Examples 1-3 are shown in the following table:

[0147]

[0148] 2) The detection results of Comparative Examples 1-5 are shown in the following table:

[0149]

[0150] According to the above table, it can be seen that:

[0151] 1) The nano-aqueous single-component white coating material provided by the present disclosure has significantly improved liquid resistance (including water resistance, alcohol resistance, acid resistance, alkali resistance, and coffee resistance) while ensuring excellent adhesion and high hardness, which is even comparable to the performance of conventional aqueous two-component white coating materials, thereby fully meeting the application in high-end fields such as bathroom and cabinet;

[0152] 2) Compared with the materials provided by Comparative Example 1 and Comparative Example 2, the performance of the materials provided by Comparative Example 1 is significantly reduced; therefore, it can be known that the aqueous acrylic emulsion in the nano-aqueous single-component white coating material provided by the present disclosure can improve the performance of the nano-aqueous single-component white coating material;

[0153] 3) Compared with the material provided by Comparative Example 4, the liquid resistance of the materials provided by Comparative Example 3 and Comparative Example 5 is improved; however, compared with the materials provided by Comparative Example 3 and Comparative Example 5, the liquid resistance of the material provided by Example 1 is significantly improved; therefore, it can be known that in the nano-aqueous single-component white coating material provided by the present disclosure, the thermosetting polymethyl urea resin and nano-alumina have a synergistic effect on improving the liquid resistance.

[0154] Therefore, the nano-aqueous single-component white coating material provided by the present disclosure, as well as the preparation method and application thereof, at least achieves the effect of simultaneously improving liquid resistance, gloss, hardness, compactness, stain resistance, yellowing resistance, adhesion, and construction performance.

[0155] The foregoing is considered as illustrative only of the principles of the disclosure. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the disclosure to the exact construction and operation described. Accordingly, all such variations are intended to be included within the scope of the present disclosure as defined in the claims below and their equivalents.

Claims

1. A nano-aqueous single component white base material, characterized in that, The raw materials of the nano-aqueous single-component white coating material by weight parts include: an aqueous acrylic emulsion 50-60 parts, a first defoaming agent 0.5-1 part, a first dispersing agent 0.5-1 part, a thickening agent 0.5-1.5 parts, titanium white paste 25-30 parts, an organic matting powder 1-3 parts, a wax auxiliary agent 3-5 parts, a film-forming auxiliary agent 5-10 parts, a nano material 1-3 parts, and water 1-10 parts; The aqueous acrylic emulsion is a core-shell copolymer emulsion, which includes a core layer and a shell layer wrapped outside the core layer, the core layer uses phenylethyl acrylate, polybutadiene and divinylbenzene monomers, and the shell layer uses polymethyl methacrylate monomers; The nano material is nano-aluminum oxide.

2. The nano-aqueous single component white base material according to claim 1, characterized in that, The raw materials of the nano-aqueous single-component white coating material by weight parts include: the aqueous acrylic emulsion 55 parts, the first defoaming agent 1 part, the first dispersing agent 0.5 part, the thickening agent 0.7 part, the titanium white paste 25 parts, the organic matting powder 1.5 parts, the wax auxiliary agent 3 parts, the film-forming auxiliary agent 5 parts, the nano material 3 parts, and the water 5.3 parts.

3. The nano-aqueous single component white base material according to claim 1, wherein, The raw materials of the titanium white paste by weight parts include: titanium white powder 70-80 parts, a second dispersing agent 5-10 parts, a second defoaming agent 0.1-0.3 parts, a mildew-proof fungicide 0.1-0.2 parts, and deionized water 10-18 parts.

4. The nano-aqueous single component white base material according to claim 1, wherein, The first defoaming agent includes at least one of organosiloxane defoaming agents, polyether defoaming agents, and polyether-modified silicon defoaming agents; And / or, the first dispersing agent includes at least one of anionic dispersants, non-ionic dispersants, and multi-functional dispersants; And / or, the thickening agent includes at least one of acrylic thickening agents, polyurethane thickening agents, and cellulose ether thickening agents; And / or, the organic matting powder includes thermosetting polymethyl urea resin; And / or, the wax auxiliary agent includes modified paraffin wax; And / or, the film-forming auxiliary agent includes at least one of dipropylene glycol methyl ether, dipropylene glycol butyl ether, and diethylene glycol butyl ether.

5. A method of producing a nano-aqueous one-component white base material according to any one of claims 1 to 4, characterized in that, Comprise: Take a part of the thickening agent, the aqueous acrylic emulsion, the first defoaming agent, and the first dispersing agent, mix and perform first dispersion until no oil shrinkage, to obtain a first product; Take the organic matting powder and the first product, mix and perform second dispersion to obtain a second product with a fineness less than or equal to 35 μm; And Take the remaining part of the thickening agent, the titanium white paste, the film-forming auxiliary agent, the wax auxiliary agent, the nano material, the water, and the second product, mix uniformly to obtain the nano-aqueous single-component white coating material.

6. The method of claim 5, wherein, The rotation speed of the first dispersion is 1200-1500 rpm, and the time of the first dispersion is 10-15 min; And / or, the rotation speed of the second dispersion is 1000-1200 rpm, and the time of the second dispersion is 5-10 min; And / or, the weight ratio of the part of the thickening agent to the remaining part of the thickening agent is 4-6:2-5.

7. Use of the nanowaterborne one-component white coating material according to any one of claims 1 to 4 or the method according to claim 5 or 6 in a coating of furniture.

8. Use according to claim 7, characterized in that, The furniture comprises at least one of bathroom and cabinet.

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