High gloss water-based coating applicable to glass surface

Abstract

A two-part, water-based gloss coating comprises (A) 80-100 parts water-based acrylic resin, 30-50 parts modified filler, 5-12 parts composite additive, 0.8-1.5 parts film-forming aid, and 35-50 parts water and (B) isocyanate curing agent. The amount of (B) is 3.2-6% of the total mass of (A). Typically, the modified filler is prepared by (i) grinding calcium carbonate, aluminium silicate, and titanium dioxide to obtain a mixed filler with D50 particle size of 0.1-1 microns, (ii) adding the mixed filler to an acidic solution (especially aqueous phytic acid) in a mass ratio of 1:(3-5) at 55-65℃, stirring at 300-500 r / min for 10-30 minutes, standing for 1-2 hours, filtering to remove a filtrate, and drying at 80-100℃ to obtain a pre-treated filler, and (iii) adding the pre-treated filler, sodium carboxymethyl cellulose, and a silane coupling agent to water in a mass ratio of 4:(4-5):(0.3-0.5):10, stirring at 300-500 r / min for 20-40 minutes, and spray drying to obtain the modified filler. The composite additive may comprise glycidyl methacrylate and diglycidyl tetrahydrophthalate in a mass ratio of (2.8-4.0):1. Components (A) and (B) are intended to be mixed, sprayed onto a glass surface, and cured to form the coating.

Description

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[0001] This application relates to the field of water-based coating, and more specifically, to high gloss water-based coatings applicable to glass surface. BACKGROUND ART

[0002] With the continuous progress of market economy and science and technology, the coating protection of glass products is becoming more and more common, and the performance requirements for glass coatings are also increasing. The glass surface is usually very smooth, and ordinary coatings are difficult to adhere to the glass surface. Organic solvent based glass coatings have strong surface permeability, which can increase their adhesion and surface protection ability. Therefore, they can still have good adhesion on smooth glass surfaces, and the coating is dense and has high glossiness. In occasions with high decorative requirements, high gloss coatings are often achieved using organic solvent based coatings. However, conventional organic solvent based glass coatings contain a large amount of volatile organic compounds such as benzene and formaldehyde, which are harmful to human health and the ecological environment, and do not conform to modem environmental protection concepts.

[0003] Water based coatings, which do not contain organic solvents and use water as a medium, are non-toxic, odorless, and non flammable, in line with the concept of green environmental protection, gradually replacing organic solvent based coatings as the main market position. At present, the commonly used water-based glass coatings are water-based acrylic resin and waterbased polyurethane resin. Due to the special properties of the substrate, such as the high smoothness of the glass surface and the high surface tension of water, the existing water-based glass coatings generally have poor wetting properties on the glass surface, resulting in poor adhesion, low hardness, poor wear resistance, low light transmittance, and low glossiness. Especially for occasions with high decorative requirements, such as high-end products like car glass, the performance of conventional water-based glass coatings is difficult to meet current application needs. In view of this, this application provides a high gloss water-based coating applicable to glass surface.. SUMMARY

[0004] In order to address the common defects of poor adhesion, low hardness, poor wear resistance, low light transmittance, and low glossiness in existing water-based glass coatings, this application provides a high glossiness water-based coating applicable to glass surface.

[0005] This application provides a high gloss water-based coating applicable to glass surface, adopting the following technical solution:

[0006] A high gloss water-based coating applicable to glass surface, including Component A and Component B, wherein Component A includes the following weight parts of raw materials: 80-100 parts of water-based acrylic resin, 30-50 parts of modified filler, 5-12 parts of composite additive, 0.8-1.5 parts of film-forming aid, and 35-50 parts of water; and the B component is an isocyanate curing agent.

[0007] Preferably, the amount of Component B added is 3.2-6% of the total mass of Component A.

[0008] Preferably, the A component includes 85-95 parts by weight of water-based acrylic resin, 35-45 parts of modified filler, 8-10 parts of composite additive, 1-1.4 parts of film-forming aid, and 40-46 parts of water as raw materials.

[0009] Preferably, the A component includes the following weight parts of raw materials: 90 parts of water-based acrylic resin, 40 parts of modified filler, 9 parts of composite additive, 1.2 parts of film-forming aid, and 44 parts of water.

[0010] Preferably, the amount of Component B added is 4.8% of the total mass of Component A.

[0011] Preferably, the modified filler is prepared by the following method:

[0012] (1) mixing and grinding calcium carbonate, aluminum silicate, and titanium dioxide to obtain a mixed filler with D50 particle size of 0.1-1 pm;

[0013] (2) in a mass ratio of the material to liquid to 1:3-5, adding the mixed filler to the acidic solution at a temperature of 55-65 °C, stirring to disperse at a stirring rate of 300-500r / min for 10-30min, stirring to disperse evenly, and then maintaining the temperature and leaving it to stand for l-2h, filtering to remove the filtrate, drying at a temperature of 80-100 °C to obtain the pre-treated filler;

[0014] (3) in the mass ratio of pre-treatment filler, sodium carboxymethyl cellulose, silane coupling agent and deionized water is controlled to be 4:4-5:0.3-0.5:10, adding the pre-treated filler, sodium carboxymethyl cellulose and silane coupling agent to the deionized water, mixing at a stirring rate of 300-500r / min for 20-40min, and spray drying to obtain the required modified filler.

[0015] Preferably, the mass ratio of calcium carbonate, aluminum silicate, and titanium dioxide in step (1) is controlled at 4-5:3:1.

[0016] Preferably, the acidic solution in step (2) is a 0.3-0.7 mol / L phytic acid aqueous solution.

[0017] Preferably, the conditions for spray drying in step (3) are as follow: the spray atomization pressure is 0.7-lMPa, and the spray outlet temperature is 80-100 °C.

[0018] Preferably, the composite additive includes glycidyl methacrylate and diglycidyl tetrahydrophthalate in a mass ratio of 2.8-4.0:1.

[0019] A preferred method for preparing Component A is as follows:

[0020] adding water-based acrylic resin and composite additives to water, mixing under stirring at a speed of 800-1200r / min for 20-40 minutes, then adding the modified filler and the filmforming agent, and continue stirring and mixing for 20-40 minutes to obtain Component A.

[0021] A preferred method for using the high gloss water-based coating applicable to glass surface is as follows: mixing Component A and Component B evenly, spraying onto a surface of the glass substrate, and cure to form a coating.

[0022] In summary, this application can achieve the following beneficial effects:

[0023] This application uses water-based acrylic resin, modified filler, compound additive, film-forming aid, and water to make Component A, and isocyanate curing agent as Component B. A and B components are combined to provide a two-component environmentally friendly and pollution-free high gloss water-based coating. It can form a stable and hard coating on glass surfaces. The coating has high hardness, good wear resistance, strong adhesion, acid and alkali resistance, high weather resistance, high transmittance, high glossiness, and high decorative properties, as well as excellent comprehensive performance.

[0024] This application uses calcium carbonate, aluminum silicate, and titanium dioxide as a mixed filler. The mixed filler is pre-treated with an acidic solution and modified by adding carboxymethyl cellulose sodium and silane coupling agent. By controlling the dosage ratio of calcium carbonate, aluminum silicate, and titanium dioxide, this application can achieve high filling of modified filler while ensuring comprehensive performance such as high transparency, high glossiness, and high durability of the resulting coating, reducing the production cost of the coating. This application uses phytic acid aqueous solution for pre-treatment of mixed filler. By activating the mixed filler and adjusting their surface characteristics, the adhesion between the mixed filler, coating systems, and coating substrates is enhanced, improving coating performance while ensuring that the formed coating is not easily peeled off or detached during long-term use. This application modifies the pre-treated filler with carboxymethyl cellulose sodium and silane coupling agent, which can further increase the dispersibility and compatibility of the mixed filler in the coating system, and avoid agglomeration, thereby improving coating performance and ensuring uniform coating distribution.

[0025] This application uses glycidyl methacrylate and diglycidyl tetrahydrophthalate as composite additives for water-based acrylic ester coatings. By controlling the use proportions of the two materials, cross-linking structures such as glycidyl ester groups, epoxy groups, and acrylic ester double bonds are purposefully introduced, which can further improve the comprehensive properties of the final formed coating, such as toughness, impact resistance, adhesion, and weather resistance.

[0026] After stirring and mixing Component A and Component B evenly, the coating can be sprayed onto the surface of a glass substrate and cured at room temperature or 60-80 °C to form a coating, achieving the advantages of simple use method, low curing shrinkage rate of the coating, smooth and glossy appearance, and excellent comprehensive performance. DETAILED DESCRIPTION

[0027] The following provides further detailed explanations of the present application in conjunction with the embodiments.

[0028] The water-based acrylic resin used in the embodiments of this application is water-based hydroxy acrylic resin, model: AH239, brand: Qirun. Isocyanate curing agent is an aliphatic waterbased isocyanate curing agent, model: HDX-100, brand: Jingxin Huiming. The silane coupling agent is silane coupling agent A-187, brand: Shandong Yuanjin.

[0029] Preparation Examples 1-3 and Comparative Preparation Examples 1-4 provided modified filler.

[0030] Preparation Example 1

[0031] Modified filler were prepared by the following methods:

[0032] (1) Mixing and grinding calcium carbonate, aluminum silicate, and titanium dioxide in a mass ratio of 4:3:1 to obtain a mixed filler with D50 particle size of 0.1 pm;

[0033] (2) Controling a ratio of the material to liquid to 1:3, adding the mixed filler to a 0.7mol / L phytic acid aqueous solution at a temperature of 55 °C, stirring to disperse at a stirring rate of 300r / min for 30 minutes, stirring to disperse evenly, then leaving it to stand at room temperature for 1 hour, filtering to remove the filtrate, and drying at a temperature of 80 °C to obtain a pre treated filler; and

[0034] (3) controlling Controlling the mass ratio of pre-treatment filler, sodium carboxymethyl cellulose, silane coupling agent and deionized water to be 4:4:0.3:10, adding the pre-treatment filler, sodium carboxymethyl cellulose and silane coupling agent to the deionized water, mixing at a stirring rate of 300 r / min for 40 minutes, controlling the spray atomization pressure to be 0.7 MPa and the temperature of the spray outlet to be 100 °C, and performing spray drying to obtain the required modified filler.

[0035] Preparation Example 2

[0036] Modified filler were prepared by the following methods:

[0037] (1) Mixing and grinding calcium carbonate, aluminum silicate, and titanium dioxide in a mass ratio of 4.5:3:1 to obtain a mixed filler with a D50 particle size of 0.5 pm;

[0038] (2) Controlling the material to liquid ratio to 1:4, adding the mixed filler to a 0.5mol / L phytic acid aqueous solution at a temperature of 60 °C, stirring to disperse at a stirring rate of 400r / min for 20 minutes, stirring to disperse evenly, then maintaining the temperature and leaving it to stand for 1.5 hours, filtering to remove the filtrate, and drying at a temperature of 90 °C to obtain the pre-treated filler; and

[0039] (3) Controlling the mass ratio of pretreatment filler, sodium carboxymethyl cellulose, silane coupling agent and deionized water to be 4:4.5:0.4:10, adding pre-treated filler, sodium carboxymethyl cellulose and silane coupling agent to the deionized water, stirring at a stirring rate of 400r / min for 30min, controlling the spray atomization pressure to be 0.9MPa and the temperature of spray outlet to be 90 °C, and performing spray drying to obtain the required modified filler.

[0040] Preparation Example 3

[0041] Modified filler were prepared by the following methods:

[0042] (1) Mixing and grinding calcium carbonate, aluminum silicate, and titanium dioxide in a mass ratio of 5:3:1 to obtain a mixed filler with D50 particle size of 1 pm;

[0043] (2) Controlling a mass ratio of the material to liquid to 1:5, adding the mixed filler to a 0.3mol / L phytic acid aqueous solution at a temperature of 65 °C, stirring to disperse at a stirring rate of 500r / min for 10 minutes, stirring to disperse evenly, then maintaining the temperature and leaving it to stand for 2 hours, filtering to remove the filtrate, and drying at a temperature of 100 °C to obtain the pre-treated filler;

[0044] (3) Controlling the mass ratio of pretreatment filler, sodium carboxymethyl cellulose, silane coupling agent and deionized water to be 4:5:0.5:10, adding the pre-treated filler, sodium carboxymethyl cellulose and silane coupling agent to the deionized water, mixing at a stirring rate of 500r / min for 20min, controlling the spray atomization pressure to IMPa and the temperature of spray outlet to be 80 °C, and performing spray drying to obtain the required modified filler.

[0045] Comparative Preparation Example 1

[0046] Modified filler were prepared by the following methods:

[0047] (1) Mixing and grinding calcium carbonate and titanium dioxide in a mass ratio of 7:1 to obtain a mixed filler with D50 particle size of 0.1 pm;

[0048] (2) Controlling a mass ratio of the material to liquid to 1:3, adding the mixed filler to a 0.7mol / L phytic acid aqueous solution at a temperature of 55 °C, stirring to disperse at a stirring rate of 300r / min for 30 minutes, stirring to disperse evenly, then leaving it to stand at room temperature for 1 hour, filtering to remove the filtrate, and drying at a temperature of 80 °C to obtain the pre-treated filler;

[0049] (3) Controlling the mass ratio of pre-treatment filler, sodium carboxymethyl cellulose, silane coupling agent and deionized water to be 4:4:0.3:10, adding the pre-treated filler, sodium carboxymethyl cellulose and silane coupling agent to the deionized water, mixing at a stirring rate of 300 r / min for 40 minutes, controlling the spray atomization pressure to be 0.7 MPa and the temperature of the spray outlet to be 100 °C, and performing spray drying to obtain the required modified filler.

[0050] Comparative Preparation Example 2

[0051] Modified filler were prepared by the following methods:

[0052] (1) Mixing and grinding calcium carbonate and aluminum silicate in a mass ratio of 5:3 to obtain a mixed filler with D50 particle size of 0.1 pm;

[0053] (2) Controlling a mass ratio of the material to liquid to 1:3, adding the mixed filler to a 0.7mol / L phytic acid aqueous solution at a temperature of 55 °C, stirring to disperse at a stirring rate of 300r / min for 30 minutes, stirring to disperse evenly, then leaving it to stand at room temperature for 1 hour, filtering to remove the filtrate, and drying at a temperature of 80 °C to obtain the pre-treated filler;

[0054] (3) Controlling the mass ratio of pre-treatment filler, sodium carboxymethyl cellulose, silane coupling agent and deionized water to be 4:4:0.3:10, adding the pre-treated filler, sodium carboxymethyl cellulose and silane coupling agent to the deionized water, mixing at a stirring rate of 300 r / min for 40 minutes, controlling the spray atomization pressure to be 0.7 MPa and the temperature of the spray outlet to be 100 °C, and performing spray drying to obtain the required modified filler.

[0055] Comparative Preparation Example 3

[0056] Modified filler were prepared by the following methods:

[0057] (1) Mixing and grinding calcium carbonate, aluminum silicate, and titanium dioxide in a mass ratio of 4:3:1 to obtain a mixed filler with D50 particle size of 0.1 pm;

[0058] (2) Controlling a mass ratio of the material to liquid to 1:3, adding the mixed filler to a 0.7mol / L phosphoric acid aqueous solution at a temperature of 55 °C, stirring to disperse at a stirring rate of 300r / min for 30 minutes, stirring to disperse evenly, then leaving it to stand at room temperature for 1 hour, filtering to remove the filtrate, and drying at a temperature of 80 °C to obtain the pre-treated filler;

[0059] (3) Controlling the mass ratio of pre-treatment filler, sodium carboxymethyl cellulose, silane coupling agent and deionized water to be 4:4:0.3:10, adding the pre-treated filler, sodium carboxymethyl cellulose and silane coupling agent to the deionized water, mixing at a stirring rate of 300 r / min for 40 minutes, controlling the spray atomization pressure to be 0.7 MPa and the temperature of the spray outlet to be 100 °C, and performing spray drying to obtain the required modified filler.

[0060] Comparative Preparation Example 4

[0061] Modified filler were prepared by the following methods:

[0062] (1) Mixing and grinding calcium carbonate, aluminum silicate, and titanium dioxide in a mass ratio of 4:3:1 to obtain a mixed filler with D50 particle size of 0.1 pm;

[0063] (2) Controlling a mass ratio of the material to liquid to 1:3, adding the mixed filler to a 0.7mol / L phytic acid aqueous solution at a temperature of 55 °C, stirring to disperse at a stirring rate of 300r / min for 30 minutes, stirring to disperse evenly, then leaving it to stand at room temperature for 1 hour, filtering to remove the filtrate, and drying at a temperature of 80 °C to obtain the pre-treated filler;

[0064] (3) Controlling the mass ratio of pretreatment filler, silane coupling agent and deionized water to be 4:0.3:10, adding the pre-treated filler and silane coupling agent to the deionized water, mixing for 40 min at a stirring rate of 300 r / min, controlling the spray atomization pressure to be 0.7 MPa and the temperature of spray outlet to be 100 °C, and performing spray drying to obtain the required modified filler.

[0065] Examples 1-5 provided high gloss water-based coatings applicable to glass surface.

[0066] Example 1

[0067] High gloss water-based coating applicable to glass surface was provided, including Component A and Component B.

[0068] In particular, Component A includes the following raw materials: 80kg of water-based acrylic resin, 30kg of modified filler, 5kg of composite additive, 0.8kg of dodecanol ester, and 35kg of water, wherein the modified filler was the modified filler in Preparation Example 1, and the composite additive includes glycidyl methacrylate and diglycidyl tetrahydrophthalate in a mass ratio of 2.8:1.

[0069] The preparation method of Component A was as follows:

[0070] At room temperature, waterborne acrylic resin and composite additives were added to water and stirred at a speed of 800 r / min for 40 minutes. Then, modified filler and dodecanol ester were added and stirred for another 40 minutes to obtain Component A.

[0071] Component B was an isocyanate curing agent, and the amount of Component B added was 3.2% of the total mass of Component A.

[0072] Example 2

[0073] High gloss water-based coating applicable to glass surface, including Component A and Component B.

[0074] In particular, Component A includes the following raw materials: 90kg of water-based acrylic resin, 40kg of modified filler, 9kg of composite additive, 1.2kg of dodecanol ester, and 44kg of water, wherein the modified filler was the modified filler in Preparation Example 2; and the composite additive includes glycidyl methacrylate and diglycidyl tetrahydrophthalate in a mass ratio of 3.4:1.

[0075] The preparation method of Component A was as follows:

[0076] At room temperature, waterborne acrylic resin and composite additives were added to water and stirred at a speed of lOOOr / min for 30 minutes. Then, modified filler and dodecanol ester were added and stirred for another 30 minutes to obtain Component A.

[0077] Component B was an isocyanate curing agent, and the amount of Component B added was 4.8% of the total mass of Component A.

[0078] Example 3

[0079] High gloss water-based coating applicable to glass surface was provided, including Component A and Component B.

[0080] In particular, Component A includes the following raw materials: 100kg of water-based acrylic resin, 50kg of modified filler, 12kg of composite additive, 1.5kg of dodecanol ester, and 50kg of water, wherein the modified filler was the modified filler in Preparation Example 3; and the composite additive includes glycidyl methacrylate and diglycidyl tetrahydrophthalate in a mass ratio of 4.0:1.

[0081] The preparation method of Component A was as follows:

[0082] At room temperature, waterborne acrylic resin and composite additives were added to water and stirred at a speed of 1200r / min for 20 minutes. Then, modified filler and dodecanol ester were added and stirred for another 20 minutes to obtain Component A.

[0083] Component B was an isocyanate curing agent, and the amount of Component B added was 6% of the total mass of Component A.

[0084] Example 4

[0085] High gloss water-based coating applicable to glass surface, including Component A and Component B.

[0086] In particular, Component A includes the following raw materials: 85kg of water-based acrylic resin, 35kg of modified filler, 8kg of composite additive, 1kg and 40kg of dodecanol ester, wherein the modified filler was the modified filler in Preparation Example 1; and the composite additive includes glycidyl methacrylate and diglycidyl tetrahydrophthalate in a mass ratio of 3.2:1.

[0087] The preparation method of Component A was as follows:

[0088] At room temperature, waterborne acrylic resin and composite additives were added to water and stirred at a speed of 900r / min for 35 minutes. Then, modified filler and dodecanol ester were added and stirred for another 35 minutes to obtain Component A.

[0089] Component B was an isocyanate curing agent, and the amount of Component B added was 4% of the total mass of Component A.

[0090] Example 5

[0091] High gloss water-based coating applicable to glass surface was provided, including Component A and Component B.

[0092] In particular, Component A includes the following raw materials: 95kg of water-based acrylic resin, 45kg of modified filler, lOKg of composite additive, 1.4kg of dodecanol ester, and 46kg of water, wherein the modified filler was the modified filler in Preparation Example 1; and the composite additive includes glycidyl methacrylate and diglycidyl tetrahydrophthalate in a mass ratio of 3.6:1.

[0093] The preparation method of Component A was as follows:

[0094] At room temperature, waterborne acrylic resin and composite additives were added to water and stirred at a speed of 1 lOOr / min for 25 minutes. Then, modified filler and dodecanol ester were added and stirred for another 25 minutes to obtain Component A.

[0095] Component B was an isocyanate curing agent, and the amount of Component B added was 5.4% of the total mass of Component A.

[0096] In order to verify the comprehensive performance of the high gloss water-based coatings applicable to glass surface prepared in Examples 1-5 of the present application, the applicant provided Comparative Examples 1-6 as follow:

[0097] Comparative Example 1

[0098] High gloss water-based coating applicable to glass surface was provided, including Component A and Component B.

[0099] In particular, Component A includes the following raw materials: 80kg of water-based acrylic resin, 30kg of modified filler, 5kg of composite additive, 0.8kg of dodecanol ester, and 35kg of water, wherein the modified filler was the modified filler in Comparative Preparation Example 1; and the composite additive includes glycidyl methacrylate and diglycidyl tetrahydrophthalate in a mass ratio of 2.8:1.

[00100] The preparation method of Component A was as follows:

[00101] At room temperature, waterborne acrylic resin and composite additives were added to water and stirred at a speed of 800 r / min for 40 minutes. Then, modified filler and dodecanol ester were added and stirred for another 40 minutes to obtain Component A.

[00102] Component B was an isocyanate curing agent, and the amount of Component B added was 3.2% of the total mass of Component A.

[00103] Comparative Example 2

[00104] High gloss water-based coating applicable to glass surface, including Component A and Component B.

[00105] In particular, Component A includes the following raw materials: 80kg of water-based acrylic resin, 30kg of modified filler, 5kg of composite additive, 0.8kg of dodecanol ester, and 35kg of water, wherein the modified filler was the modified filler in Comparative Preparation Example 2; and the composite additive includes glycidyl methacrylate and diglycidyl tetrahydrophthalate in a mass ratio of 2.8:1.

[00106] The preparation method of Component A was as follows:

[00107] At room temperature, waterborne acrylic resin and composite additives were added to water and stirred at a speed of 800 r / min for 40 minutes. Then, modified filler and dodecanol ester were added and stirred for another 40 minutes to obtain Component A.

[00108] Component B was an isocyanate curing agent, and the amount of Component B added was 3.2% of the total mass of Component A.

[00109] Comparative Example 3

[00110] High gloss water-based coating applicable to glass surface was provided, including Component A and Component B.

[00111] In particular, Component A includes the following raw materials: 80kg of water-based acrylic resin, 30kg of modified filler, 5kg of composite additive, 0.8kg of dodecanol ester, and 35kg of water, wherein the modified filler was the modified filler in Comparative Preparation Example 3; and the composite additive includes glycidyl methacrylate and diglycidyl tetrahydrophthalate in a mass ratio of 2.8:1.

[00112] The preparation method of Component A was as follows:

[00113] At room temperature, waterborne acrylic resin and composite additives were added to water and stirred at a speed of 800 r / min for 40 minutes. Then, modified filler and dodecanol ester were added and stirred for another 40 minutes to obtain Component A.

[00114] Component B was an isocyanate curing agent, and the amount of Component B added was 3.2% of the total mass of Component A.

[00115] Comparative Example 4

[00116] High gloss water-based coating applicable to glass surface was provided, including Component A and Component B.

[00117] In particular, Component A includes the following raw materials: 80kg of water-based acrylic resin, 30kg of modified filler, 5kg of composite additive, 0.8kg of dodecanol ester, and 35kg of water, wherein the modified filler was the modified filler in Comparative Preparation Example 4; and the composite additive includes glycidyl methacrylate and diglycidyl tetrahydrophthalate in a mass ratio of 2.8:1.

[00118] The preparation method of Component A was as follows:

[00119] At room temperature, waterborne acrylic resin and composite additives were added to water and stirred at a speed of 800 r / min for 40 minutes. Then, modified filler and dodecanol ester were added and stirred for another 40 minutes to obtain Component A.

[00120] Component B was an isocyanate curing agent, and the amount of Component B added was 3.2% of the total mass of Component A.

[00121] Comparative Example 5

[00122] High gloss water-based coating applicable to glass surface was provided, including Component A and Component B.

[00123] In particular, Component A includes the following raw materials: 80kg of water-based acrylic resin, 30kg of modified filler, 5kg of glycidyl methacrylate, 0.8kg of dodecanol ester, and 35kg of water, wherein the modified filler was the modified filler in Preparation Example 1.

[00124] The preparation method of Component A was as follows:

[00125] At room temperature, waterborne acrylic resin and additive (glycidyl methacrylate) were added to water and stirred at a speed of 800 r / min for 40 minutes. Then, modified filler and dodecanol ester were added and stirred for another 40 minutes to obtain Component A.

[00126] Component B was an isocyanate curing agent, and the amount of Component B added was 3.2% of the total mass of Component A.

[00127] Comparative Example 6

[00128] High gloss water-based coating applicable to glass surface was provided, including Component A and Component B.

[00129] In particular, Component A includes the following raw materials: 80kg of water-based acrylic resin, 30kg of modified filler, 5kg of tetrahydrophthalic acid diglycidyl ester, 0.8kg of dodecanol ester, and 35kg of water, wherein the modified filler was the modified filler in Preparation Example I.

[00130] The preparation method of Component A was as follows:

[00131] At room temperature, waterborne acrylic resin and additive (diglycidyl tetrahydrophthalate) were added to water and stirred at a speed of 800 r / min for 40 minutes. Then, modified filler and dodecanol ester were added and stirred for another 40 minutes to obtain Component A.

[00132] Component B was an isocyanate curing agent, and the amount of Component B added was 3.2% of the total mass of Component A.

[00133] Application examples

[00134] The usage methods of the high gloss water-based coatings applicable to glass surface in Examples 1-5 and Comparative Examples 1-6 were as follows:

[00135] After stirring and mixing Component A and Component B evenly at room temperature (stirring speed of 500r / min, stirring for 10 minutes), the mixture was sprayed onto a clean glass substrate surface (glass thickness of 2mm) by using an automatic air spray gun, in which the spraying pressure was controlled to 12MPa, and the initial coating thickness was 15 pm. Curing was performed for 10 minutes at 60 °C, a second spraying was perform at a coating thickness of 30 pm, and curing was performed at 60 °C for 1 hour until the final coating was completely cured.

[00136] Performance testing

[00137] The comprehensive performance of the high gloss water-based coatings prepared in Examples 1-5 and Comparative Examples 1-6 applicable to glass surface to form the final coating was tested.

[00138] Adhesion: tested according to the national standard GB / T 9286-2021. 5

[00139] Wear resistance: using RCA paper tape wear tester to test 150, calculating (machine model Honghe HH-7802A, machine speed 17r / min, load 275g, observing the counting times when the coating was worn through and the glass substrate appears)

[00140] Transmittance: detecting the visible light transmittance according to the national standard GB / T 2680-2021. 10

[00141] Glossiness: using a glossiness meter to test the glossiness at 60 °, following the GB8807 glossiness testing standard.

[00142] Impact resistance: tested according to the national standard GB / T 1732-2020.

[00143] High temperature resistance: placing the coated sample under high temperature and high humidity conditions of 130 °C and 90% humidity for 72 hours, observing the foaming situation 15 on the surface of the coating, and calculating the bubbling rate by the formula: the bubbling rate (%)=coating bubble area total coating area x 100%.

[00144] The test results are shown in Table 1 below. Table 1 Comprehensive performance of high gloss water-based coatings applicable to glass surface Performance to be tested Adhesion Wear resistance (times) Transmittan ce (%) Glossines s(%) Impact resistance (cm) High temperature resistance (%) Example 1 5B 796 91 95 65 3.3 Example 2 5B 815 92 95 70 2.1 Example 3 5B 834 92 96 70 1.4 Example 4 5B 822 91 96 70 1.7 Example 5 5B 801 91 95 65 2.0 Comparative Example 1 4B 625 67 83 55 7.8 Comparative Example 2 4B 693 84 81 60 5.0 Comparative Example 3 3B 711 79 84 55 4.0 Comparative Example 4 4B 725 82 87 60 4.4 Comparative Example 5 B 744 89 91 55 5.7 Comparative Example 6 B 730 87 93 50 6.2

[00145] According to the data shown in Table 1 above, it can be seen that the high gloss waterbased coatings prepared in Examples 1-5 for application on glass surfaces not only have high hardness, wear resistance, impact resistance, and high temperature resistance, but also achieve high transmittance and glossiness, and have strong adhesion to glass substrates, with 5 comprehensive performance far superior to Comparative Examples 1-6.

[00146] This specific embodiment is only an explanation of the present application and is not a limitation of the present application, reading this specification, those skilled in the art may make modifications to the present embodiment as needed without creative contributions, but as long as they are within the scope of the claims of the present application, they are protected by the Patent 10 Law.

Claims

1. A high gloss water-based coating applicable to glass surface, characterized by comprising Component A and Component B;wherein the A component includes the following weight parts of raw materials: 80-100 parts of water-based acrylic resin, 30-50 parts of modified filler, 5-12 parts of composite additive, 0.8-1.5 parts of film-forming aid, and 35-50 parts of water; andthe Component B is an isocyanate curing agent, and the amount of Component B added is 3.2-6% of the total mass of Component A.

2. The high gloss water-based coating applicable to glass surface according to claim 1, characterized in that Component A comprises the following weight parts of raw materials: 90 parts of water-based acrylic resin, 40 parts of modified filler, 9 parts of composite additive, 1.2 parts of film-forming agent, and 44 parts of water.

3. The high gloss water-based coating applicable to glass surface according to claim 2, characterized in that the amount of Component B added is 4.8% of the total mass of Component A.

4. The high gloss water-based coating applicable to glass surface according to claim 1, characterized in that the modified filler is prepared by the following method:(1) mixing and grinding calcium carbonate, aluminum silicate, and titanium dioxide to obtain a mixed filler with D50 particle size of 0.1-1 pm;(2) in a mass ratio of material to liquid to 1:3-5, adding the mixed filler to an acidic solution at a temperature of 55-65 °C, stirring to disperse at a stirring rate of 300-500r / min for 10-30min, stirring to disperse evenly, and then maintaining the temperature and leaving it to stand for l-2h, filtering to remove a filtrate, and drying at a temperature of 80-100 °C to obtain the pre-treated filler; and(3) in a mass ratio of pre-treatment filler, sodium carboxymethyl cellulose, silane coupling agent and deionized water of 4:(4-5):(0.3-0.5):10, adding the pre-treated filler, sodiumcarboxymethyl cellulose and silane coupling agent to deionized water, mixing at a stirring rate of 300-500r / min for 20-40min, and spray drying to obtain the required modified filler.

5. The high gloss water-based coating applicable to glass surface according to claim 4, characterized in that a mass ratio of calcium carbonate, aluminum silicate, and titanium dioxide in step (1) is (4-5):3:1.

6. The high gloss water-based coating applicable to glass surface according to claim 4, characterized in that the acidic solution in step (2) is a 0.3-0.7 mol / L phytic acid aqueous solution.

7. The high gloss water-based coating applicable to glass surface according to claim 4, characterized in that conditions for spray drying in step (3) are as follows: a spray atomization pressure is 0.7-lMPa, and a spray outlet temperature is 80-100 °C.

8. The high gloss water-based coating applicable to glass surface according to claim 1, characterized in that the composite additive comprises glycidyl methacrylate and diglycidyl tetrahydrophthalate in a mass ratio of (2.8-4.0):1.

9. The high gloss water-based coating applicable to glass surface according to claim 1, characterized in that a preparation method of Component A is as follows:adding the water-based acrylic resin and the composite additive to water, stirring to mix at a speed of 800-1200r / min for 20-40 minutes, then adding the modified filler and film-forming agent, and continue stirring to mix for 20-40 minutes to obtain Component A.

10. The high gloss water-based coating applicable to glass surface according to claim 1, characterized in that a method for using the water-based coating is as follows: mixing Component A and Component B under stirring evenly, spraying onto a surface of a glass substrate, and curing to form a coating."Amendments to the claim as been filed as follows."WHAT IS CLAIMED IS:

1. A high gloss water-based coating applicable to glass surface, characterized by comprising Component A and Component B;wherein the A component includes the following weight parts of raw materials: 80-100 parts of water-based acrylic resin, 30-50 parts of modified filler, 5-12 parts of composite additive, 0.8-1.5 parts of film-forming aid, and 35-50 parts of water; andthe Component B is an isocyanate curing agent, and the amount of Component B added is 3.2-6% of the total mass of Component A.

2. The high gloss water-based coating for glass surface according to claim 1, characterized in that the acidic solution is one or more of phosphoric acid, acetic acid or phytic acid;3. The high gloss water-based coating for glass surface according to claim 1, characterized in that the water-based acrylic resin is a combination of carboxyl, hydroxyl or amino group;4. The high gloss water-based coating for glass surface according to claim 1, characterized in that the composite additive is glycidyl methacrylate and di-glycidyl tetrahydrophthalate, and their mass ratio is 2.8-4.0:1.5.The high gloss water-based coating applicable to glass surface according to claim 1, characterized in that Component A comprises the following weight parts of raw materials: 90 parts of water-based acrylic resin, 40 parts of modified filler, 9 parts of composite additive, 1.2 parts of film-forming agent, and 44 parts of water.6.The high gloss water-based coating applicable to glass surface according to claim 2, characterized in that the amount of Component B added is 4.8% of the total mass of Component A.7.The high gloss water-based coating applicable to glass surface according to claim 1, characterized in that the modified filler is prepared by the following method:(1) mixing and grinding calcium carbonate, aluminum silicate, and titanium dioxide to obtain a mixed filler with D50 particle size of 0.1-1 pm:(2) in a mass ratio of material to liquid to 1:3-5, adding the mixed filler to an acidic solution at a temperature of 55-65 °C, stirring to disperse at a stirring rate of 300-500r / min for 10-30min, stirring to disperse evenly, and then maintaining the temperature and leaving it to stand for l-2h, filtering to remove a filtrate, and drying at a temperature of 80-100 °C to obtain the pre-treated filler; and(3) in a mass ratio of pre-treatment filler, sodium carboxymethyl cellulose, silane coupling agent and deionized water of 4:(4-5):(0.3-0.5):10, adding the pre-treated filler, sodium carboxymethyl cellulose and silane coupling agent to deionized water, mixing at a stirring rate of 3OO-5OOr / min for 20-40min, and spray drying to obtain the required modified filler.8.The high gloss water-based coating applicable to glass surface according to claim 4, characterized in that a mass ratio of calcium carbonate, aluminum silicate, and titanium dioxide in step (1) is (4-5):3:1.9.The high gloss water-based coating applicable to glass surface according to claim 4, characterized in that the acidic solution in step (2) is a 0.3-0.7 mol / L phytic acid aqueous solution.10.The high gloss water-based coating applicable to glass surface according to claim 4, characterized in that conditions for spray drying in step (3) are as follows: a spray atomization pressure is 0.7-1 MPa, and a spray outlet temperature is 80-100 °C.11.The high gloss water-based coating applicable to glass surface according to claim 1, characterized in that a preparation method of Component A is as follows:(l)adding the water-based acrylic resin and the composite additive to water, stirring to mix at a speed of 800-1200r / min for 20-40 minutes, then adding the modified filler and film-forming agent, and continue stirring to mix for 20-40 minutes to obtain Component A.(2) mixing Component A and Component B under stirring evenly, spraying onto a surface of a glass substrate, and curing to form a coating.