Environment-friendly ceramic cement paint and preparation method thereof

Abstract

The invention discloses environment-friendly ceramic cement paint. Comprising the following components in parts by weight: 100-120 parts of a polyurethane solution, 50-60 parts of ordinary Portland cement, 30-40 parts of a chitosan modified solution, 30-40 parts of a styrene-acrylic polymer emulsion, 10-15 parts of potassium tripolyphosphate, 1-3 parts of a polycarboxylate superplasticizer, 1-5 parts of dimethylethanolamine, 5-8 parts of barium metaphosphate, 13-18 parts of potassium chloride and 5-10 parts of dibutyl phthalate. 1 to 3 parts of cellulose ether; and 2 to 4 parts of polydimethylsiloxane. According to the environment-friendly ceramic cement paint and the preparation method thereof, the environment-friendly ceramic cement paint has excellent mechanical strength and high wear resistance.

Description

Technical Field

[0001] The present invention relates to the field of coatings, and in particular to an environmentally friendly ceramic cement paint and a preparation method thereof. Background Art

[0002] Paints are typically viscous liquids based on resins or oils, with or without pigments and fillers, mixed with organic solvents or water. New solid forms, such as powder coatings, are also emerging. Regardless of the form (liquid or solid), all coatings should consist of at least two or three basic components. These components are categorized as primary film-forming substances, secondary film-forming substances, and auxiliary film-forming substances. Coatings are liquid or solid polymer materials that form a tough, continuous coating (paint film) on the surface of a substrate. Existing ceramic cement paint films have poor physical properties after film formation, primarily manifested by low surface hardness and poor crack resistance. Consequently, the surface is prone to bulging and shedding, leading to efflorescence on the ceramic substrate. Summary of the Invention

[0003] In view of this, the object of the present invention is to provide an environmentally friendly ceramic cement paint and a preparation method thereof, which has excellent mechanical strength and high wear resistance.

[0004] In order to achieve the above object, the present invention provides the following technical solutions: An environmentally friendly ceramic cement paint comprises the following components in parts by weight: 100-120 parts of a polyurethane solution, 50-60 parts of ordinary Portland cement, 30-40 parts of a chitosan modified solution, 30-40 parts of a styrene-acrylic polymer emulsion, 10-15 parts of potassium tripolyphosphate, 1-3 parts of a polycarboxylic acid water reducer, 1-5 parts of dimethylethanolamine, 5-8 parts of barium metaphosphate, 13-18 parts of potassium chloride, 5-10 parts of dibutyl phthalate, 1-3 parts of a cellulose ether, and 2-4 parts of polydimethylsiloxane.

[0005] A method for preparing an environmentally friendly ceramic cement paint comprises the following steps: The environmentally friendly ceramic cement paint is obtained by mixing and stirring a polyurethane solution, ordinary Portland cement, chitosan modified solution, styrene acrylic polymer emulsion, potassium tripolyphosphate, polycarboxylic acid water reducer, dimethylethanolamine, barium metaphosphate, potassium chloride, dibutyl phthalate, cellulose ether and polydimethylsiloxane.

[0006] Preferably, the preparation method of the polyurethane solution is specifically as follows: dissolving modified silica and polyurethane in a mixed solvent of N,N-dimethylformamide and butyl acetate, and stirring for 12-24 hours to obtain the polyurethane solution.

[0007] Preferably, the weight ratio of the modified silica, polyurethane, N,N-dimethylformamide and butyl acetate is 1:1:2:4.

[0008] Preferably, the preparation method of the modified silica is specifically as follows: adding ethyl orthosilicate and sodium dodecylbenzenesulfonate to an ethanol solution with a volume fraction of 50%, continuing to add ammonia water and stirring until white, placing it in an oven for hydrothermal reaction, wherein the temperature is set to 60°C and the time is 2 hours; after the reaction is completed, taking it out, adding hexadecyltrimethoxysilane, and then pouring it into an oven for hydrothermal reaction, wherein the reaction temperature is 60°C and the reaction time is 1 hour; after the reaction is completed, the solution is dried at 50°C to obtain modified silica.

[0009] Preferably, the weight ratio of the ethyl orthosilicate, sodium dodecylbenzenesulfonate, ethanol solution, ammonia water and hexadecyltrimethoxysilane is 1:1:4:1:2.

[0010] Preferably, the preparation method of the chitosan modified solution is specifically as follows: chitosan, 25% by mass sodium chloride solution, dimethyl sulfate and 20% by mass sodium hydroxide solution are mixed, and stirred at 40° C. for 1-2 hours to obtain the chitosan modified solution.

[0011] Preferably, the weight ratio of the chitosan, sodium chloride solution, dimethyl sulfate and sodium hydroxide solution is 3:1:2:1.

[0012] Preferably, the preparation method of the styrene-acrylic polymer emulsion is specifically as follows: styrene and a 50% by mass sodium bicarbonate solution are mixed, potassium persulfate is added at 75-80° C. under nitrogen protection and the reaction is continued for 5 hours, and then hydroxyethyl methacrylate is added and the reaction is continued for 3 hours to obtain the styrene-acrylic polymer emulsion.

[0013] Preferably, the weight ratio of the styrene, 50% sodium bicarbonate solution, potassium persulfate and hydroxyethyl methacrylate is 1:2:1:1.

[0014] The uniform dispersion of the nanoparticles of the present invention also enables the polymer emulsion to form a grid connection and adhesion structure, which has good steric hindrance and stability, and can further increase the reactivity of the polymer film. At the same time, the modified chitosan cross-links the polymer emulsion through electrostatic action and hydrogen bonding, and is loaded and entangled with the nanoparticles of the polymer emulsion, thereby forming a network structure with high surface energy, increasing the supramolecular effect, so that the polymer emulsion can be cross-linked and bridged with the cement component, increasing the bonding area of ​​the cement paint interface, and can also be fully doped into the spatial system of the polymer emulsion, so that the density of the cement paint is significantly improved, and the gaps and holes in the cement paint are filled, so that the cement paint has stronger tensile strength and structural stability. DETAILED DESCRIPTION

[0015] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention. The cellulose ether is 15,000-20,000 cps. In addition, it is specifically noted that the raw materials and equipment of the present invention can be obtained from commercial sources and are not listed one by one. Among them, the raw materials of the present invention can be obtained from commercial sources and are well known to those skilled in the art. Example 1

[0016] An environmentally friendly ceramic cement paint comprises the following components in parts by weight: 100 parts of a polyurethane solution, 50 parts of ordinary Portland cement, 30 parts of a chitosan-modified solution, 30 parts of a styrene-acrylic polymer emulsion, 10 parts of potassium tripolyphosphate, 1 part of a polycarboxylate water-reducing agent, 1 part of dimethylethanolamine, 5 parts of barium metaphosphate, 13 parts of potassium chloride, 5 parts of dibutyl phthalate, 1 part of a cellulose ether, and 2 parts of polydimethylsiloxane.

[0017] A method for preparing an environmentally friendly ceramic cement paint comprises the following steps: The polyurethane solution, ordinary Portland cement, chitosan modified solution, styrene acrylic polymer emulsion, potassium tripolyphosphate, polycarboxylic acid water reducer, dimethylethanolamine, barium metaphosphate, potassium chloride, dibutyl phthalate, cellulose ether and polydimethylsiloxane in the above-mentioned parts by weight are mixed and stirred uniformly to obtain the environmentally friendly ceramic cement paint.

[0018] The polyurethane solution is prepared by mixing modified silica, polyurethane, N,N-dimethylformamide and butyl acetate in a weight ratio of 1:1:2:4, and stirring for 12 hours to obtain the polyurethane solution.

[0019] The preparation method of modified silica is specifically as follows: adding ethyl orthosilicate and sodium dodecylbenzenesulfonate to an ethanol solution with a volume fraction of 50%, continuing to add ammonia water and stirring until white, placing it in an oven for hydrothermal reaction, wherein the temperature is set to 60°C and the time is 2 hours; after the reaction is completed, taking it out, adding hexadecyltrimethoxysilane, and then pouring it into an oven for hydrothermal reaction, wherein the reaction temperature is 60°C and the reaction time is 1 hour; after the reaction is completed, drying the solution at 50°C, wherein the weight ratio of ethyl orthosilicate, sodium dodecylbenzenesulfonate, ethanol solution, ammonia water and hexadecyltrimethoxysilane is 1:1:4:1:2, to obtain modified silica.

[0020] The preparation method of the chitosan modified solution is specifically as follows: chitosan, 25% sodium chloride solution, dimethyl sulfate and 20% sodium hydroxide solution are mixed in a weight ratio of 3:1:2:1, and stirred at 40°C for 1 hour to obtain the chitosan modified solution.

[0021] The preparation method of the styrene-acrylic polymer emulsion is specifically as follows: styrene and a 50% by mass sodium bicarbonate solution are mixed, potassium persulfate is added at 75° C. under nitrogen protection, and the reaction is continued for 5 hours, and then hydroxyethyl methacrylate is added and the reaction is continued for 3 hours, wherein the weight ratio of styrene, 50% by mass sodium bicarbonate solution, potassium persulfate and hydroxyethyl methacrylate is 1:2:1:1, to obtain a styrene-acrylic polymer emulsion. Example 2

[0022] An environmentally friendly ceramic cement paint comprises the following components in parts by weight: 120 parts of a polyurethane solution, 60 parts of ordinary Portland cement, 40 parts of a chitosan-modified solution, 40 parts of a styrene-acrylic polymer emulsion, 15 parts of potassium tripolyphosphate, 3 parts of a polycarboxylate water-reducing agent, 5 parts of dimethylethanolamine, 8 parts of barium metaphosphate, 18 parts of potassium chloride, 10 parts of dibutyl phthalate, 3 parts of a cellulose ether, and 4 parts of polydimethylsiloxane.

[0023] A method for preparing an environmentally friendly ceramic cement paint comprises the following steps: The polyurethane solution, ordinary Portland cement, chitosan modified solution, styrene acrylic polymer emulsion, potassium tripolyphosphate, polycarboxylic acid water reducer, dimethylethanolamine, barium metaphosphate, potassium chloride, dibutyl phthalate, cellulose ether and polydimethylsiloxane in the above-mentioned parts by weight are mixed and stirred uniformly to obtain the environmentally friendly ceramic cement paint.

[0024] The polyurethane solution is prepared by mixing modified silica, polyurethane, N,N-dimethylformamide and butyl acetate in a weight ratio of 1:1:2:4, and stirring for 24 hours to obtain the polyurethane solution.

[0025] The preparation method of modified silica is specifically as follows: adding ethyl orthosilicate and sodium dodecylbenzenesulfonate to an ethanol solution with a volume fraction of 50%, continuing to add ammonia water and stirring until white, placing it in an oven for hydrothermal reaction, wherein the temperature is set to 60°C and the time is 2 hours; after the reaction is completed, taking it out, adding hexadecyltrimethoxysilane, and then pouring it into an oven for hydrothermal reaction, wherein the reaction temperature is 60°C and the reaction time is 1 hour; after the reaction is completed, drying the solution at 50°C, wherein the weight ratio of ethyl orthosilicate, sodium dodecylbenzenesulfonate, ethanol solution, ammonia water and hexadecyltrimethoxysilane is 1:1:4:1:2, to obtain modified silica.

[0026] The preparation method of the chitosan modified solution is specifically as follows: chitosan, 25% sodium chloride solution, dimethyl sulfate and 20% sodium hydroxide solution are mixed in a weight ratio of 3:1:2:1, and stirred at 40°C for 2 hours to obtain the chitosan modified solution.

[0027] The preparation method of the styrene-acrylic polymer emulsion is specifically as follows: styrene and a 50% by mass sodium bicarbonate solution are mixed, potassium persulfate is added at 80° C. under nitrogen protection and the reaction is continued for 5 hours, and then hydroxyethyl methacrylate is added and the reaction is continued for 3 hours, wherein the weight ratio of styrene, 50% by mass sodium bicarbonate solution, potassium persulfate and hydroxyethyl methacrylate is 1:2:1:1, to obtain a styrene-acrylic polymer emulsion. Example 3

[0028] An environmentally friendly ceramic cement paint comprises the following components in parts by weight: 110 parts of a polyurethane solution, 55 parts of ordinary Portland cement, 35 parts of a chitosan-modified solution, 35 parts of a styrene-acrylic polymer emulsion, 12 parts of potassium tripolyphosphate, 2 parts of a polycarboxylate water-reducing agent, 3 parts of dimethylethanolamine, 6 parts of barium metaphosphate, 15 parts of potassium chloride, 8 parts of dibutyl phthalate, 2 parts of a cellulose ether, and 3 parts of polydimethylsiloxane.

[0029] A method for preparing an environmentally friendly ceramic cement paint comprises the following steps: The polyurethane solution, ordinary Portland cement, chitosan modified solution, styrene acrylic polymer emulsion, potassium tripolyphosphate, polycarboxylic acid water reducer, dimethylethanolamine, barium metaphosphate, potassium chloride, dibutyl phthalate, cellulose ether and polydimethylsiloxane in the above-mentioned parts by weight are mixed and stirred uniformly to obtain the environmentally friendly ceramic cement paint.

[0030] The polyurethane solution was prepared by mixing modified silica, polyurethane, N,N-dimethylformamide and butyl acetate in a weight ratio of 1:1:2:4, and stirring for 18 hours to obtain the polyurethane solution.

[0031] The preparation method of modified silica is specifically as follows: adding ethyl orthosilicate and sodium dodecylbenzenesulfonate to an ethanol solution with a volume fraction of 50%, continuing to add ammonia water and stirring until white, placing it in an oven for hydrothermal reaction, wherein the temperature is set to 60°C and the time is 2 hours; after the reaction is completed, taking it out, adding hexadecyltrimethoxysilane, and then pouring it into an oven for hydrothermal reaction, wherein the reaction temperature is 60°C and the reaction time is 1 hour; after the reaction is completed, drying the solution at 50°C, wherein the weight ratio of ethyl orthosilicate, sodium dodecylbenzenesulfonate, ethanol solution, ammonia water and hexadecyltrimethoxysilane is 1:1:4:1:2, to obtain modified silica.

[0032] The preparation method of the chitosan modified solution is specifically as follows: chitosan, 25% sodium chloride solution, dimethyl sulfate and 20% sodium hydroxide solution are mixed in a weight ratio of 3:1:2:1, and stirred at 40°C for 1.5 hours to obtain the chitosan modified solution.

[0033] The preparation method of the styrene-acrylic polymer emulsion is specifically as follows: styrene and a 50% by mass sodium bicarbonate solution are mixed, potassium persulfate is added at 80° C. under nitrogen protection and the reaction is continued for 5 hours, and then hydroxyethyl methacrylate is added and the reaction is continued for 3 hours, wherein the weight ratio of styrene, 50% by mass sodium bicarbonate solution, potassium persulfate and hydroxyethyl methacrylate is 1:2:1:1, to obtain a styrene-acrylic polymer emulsion. Comparative Example 1

[0034] The preparation method of Comparative Example 1 is basically the same as that of Example 1, except that the polyurethane solution and chitosan solution are directly used, specifically: An environmentally friendly ceramic cement paint comprises the following components in parts by weight: 100 parts of polyurethane solution, 50 parts of ordinary Portland cement, 30 parts of chitosan solution, 30 parts of styrene acrylic polymer emulsion, 10 parts of potassium tripolyphosphate, 1 part of polycarboxylate water reducer, 1 part of dimethylethanolamine, 5 parts of barium metaphosphate, 13 parts of potassium chloride, 5 parts of dibutyl phthalate, 1 part of cellulose ether, and 2 parts of polydimethylsiloxane.

[0035] A method for preparing an environmentally friendly ceramic cement paint comprises the following steps: The polyurethane solution, ordinary Portland cement, chitosan solution, styrene acrylic polymer emulsion, potassium tripolyphosphate, polycarboxylic acid water reducer, dimethylethanolamine, barium metaphosphate, potassium chloride, dibutyl phthalate, cellulose ether and polydimethylsiloxane in the above-mentioned parts by weight are mixed and stirred uniformly to obtain the environmentally friendly ceramic cement paint.

[0036] The polyurethane solution was prepared by mixing silicon dioxide, polyurethane, N,N-dimethylformamide and butyl acetate in a weight ratio of 1:1:2:4, and stirring for 12 hours to obtain the polyurethane solution.

[0037] The preparation method of the styrene-acrylic polymer emulsion is specifically as follows: styrene and a 50% by mass sodium bicarbonate solution are mixed, potassium persulfate is added at 75° C. under nitrogen protection, and the reaction is continued for 5 hours, and then hydroxyethyl methacrylate is added and the reaction is continued for 3 hours, wherein the weight ratio of styrene, 50% by mass sodium bicarbonate solution, potassium persulfate and hydroxyethyl methacrylate is 1:2:1:1, to obtain a styrene-acrylic polymer emulsion. Comparative Example 2

[0038] The preparation method of Comparative Example 2 is basically the same as that of Example 1, except that the polyurethane solution and styrene-acrylate polymer emulsion are not used. Specifically, An environmentally friendly ceramic cement paint comprises the following components in parts by weight: 50 parts of ordinary Portland cement, 30 parts of chitosan modified solution, 10 parts of potassium tripolyphosphate, 1 part of polycarboxylate water reducer, 1 part of dimethylethanolamine, 5 parts of barium metaphosphate, 13 parts of potassium chloride, 5 parts of dibutyl phthalate, 1 part of cellulose ether, and 2 parts of polydimethylsiloxane.

[0039] A method for preparing an environmentally friendly ceramic cement paint comprises the following steps: The above-mentioned parts by weight of ordinary Portland cement, chitosan modified solution, potassium tripolyphosphate, polycarboxylate water reducer, dimethylethanolamine, barium metaphosphate, potassium chloride, dibutyl phthalate, cellulose ether and polydimethylsiloxane are mixed and stirred uniformly to obtain the environmentally friendly ceramic cement paint.

[0040] The preparation method of the chitosan modified solution is specifically as follows: chitosan, 25% sodium chloride solution, dimethyl sulfate and 20% sodium hydroxide solution are mixed in a weight ratio of 3:1:2:1, and stirred at 40°C for 1 hour to obtain the chitosan modified solution.

[0041] The cement paints obtained in Examples 1-3 of the present invention and Comparative Examples 1-2 were applied to the surface of the same finished ceramic product with the same uniformity and application ratio. The performance of the finished ceramic product after application was tested. The test results are shown in Table 1.

[0042] Wear resistance test: Tested in accordance with GB / T3810.6-2016.

[0043] Mechanical strength test: Tested in accordance with GB / T 4740-1999.

[0044] Compressive strength is tested in accordance with GB / T 4740-1999.

[0045] Table 1 Test data of Examples 1-3 and Comparative Examples 1-2

[0046] It can be seen from the above table that after the cement paints of Examples 1-3 are applied to the ceramic surface, the properties of the tested ceramics have good wear resistance, compressive strength and fracture toughness compared with those of Comparative Examples 1-2.

[0047] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An environmentally friendly ceramic cement paint, characterized in that: The invention comprises the following components in parts by weight: 100-120 parts of polyurethane solution, 50-60 parts of ordinary Portland cement, 30-40 parts of chitosan modified solution, 30-40 parts of styrene-acrylic polymer emulsion, 10-15 parts of potassium tripolyphosphate, 1-3 parts of polycarboxylic acid water reducer, 1-5 parts of dimethylethanolamine, 5-8 parts of barium metaphosphate, 13-18 parts of potassium chloride, 5-10 parts of dibutyl phthalate, 1-3 parts of cellulose ether and 2-4 parts of polydimethylsiloxane.

2. A method for preparing the environmentally friendly ceramic cement paint according to claim 1, characterized in that: The following steps are involved: The environmentally friendly ceramic cement paint is obtained by mixing and stirring a polyurethane solution, ordinary Portland cement, chitosan modified solution, styrene acrylic polymer emulsion, potassium tripolyphosphate, polycarboxylic acid water reducer, dimethylethanolamine, barium metaphosphate, potassium chloride, dibutyl phthalate, cellulose ether and polydimethylsiloxane.

3. The method for preparing an environmentally friendly ceramic cement paint according to claim 2, wherein: The preparation method of the polyurethane solution is specifically as follows: dissolving modified silicon dioxide and polyurethane in a mixed solvent of N,N-dimethylformamide and butyl acetate, and stirring for 12-24 hours to obtain the polyurethane solution.

4. The method for preparing an environmentally friendly ceramic cement paint according to claim 3, characterized in that: The weight ratio of the modified silica, polyurethane, N,N-dimethylformamide and butyl acetate is 1:1:2:

4.

5. The method for preparing an environmentally friendly ceramic cement paint according to claim 2, wherein: The modified silica preparation method specifically comprises the following steps: adding ethyl orthosilicate and sodium dodecylbenzenesulfonate to an ethanol solution with a volume fraction of 50%, continuously adding ammonia water and stirring until the solution turns white, and placing the solution in an oven for hydrothermal reaction at a temperature of 60° C. and a reaction time of 2 hours; after the reaction is completed, removing the solution, adding hexadecyltrimethoxysilane, and then placing the solution in an oven for hydrothermal reaction at a temperature of 60° C. and a reaction time of 1 hour; and after the reaction is completed, drying the solution at 50° C. to obtain the modified silica.

6. The method for preparing an environmentally friendly ceramic cement paint according to claim 5, characterized in that: The weight ratio of the ethyl orthosilicate, sodium dodecylbenzenesulfonate, ethanol solution, ammonia water and hexadecyltrimethoxysilane is 1:1:4:1:

2.

7. The method for preparing an environmentally friendly ceramic cement paint according to claim 2, wherein: The preparation method of the chitosan modified solution is specifically as follows: chitosan, 25% by mass sodium chloride solution, dimethyl sulfate and 20% by mass sodium hydroxide solution are mixed, and stirred at 40° C. for 1-2 hours to obtain the chitosan modified solution.

8. The method for preparing an environmentally friendly ceramic cement paint according to claim 7, characterized in that: The weight ratio of the chitosan, sodium chloride solution, dimethyl sulfate and sodium hydroxide solution is 3:1:2:

1.

9. The method for preparing an environmentally friendly ceramic cement paint according to claim 2, wherein: The preparation method of the styrene-acrylic polymer emulsion is specifically as follows: styrene and a sodium bicarbonate solution with a mass fraction of 50% are mixed, potassium persulfate is added at 75-80° C. under nitrogen protection, and the mixture is reacted for 5 hours, and hydroxyethyl methacrylate is then added and the mixture is reacted for 3 hours to obtain the styrene-acrylic polymer emulsion.

10. The method for preparing an environmentally friendly ceramic cement paint according to claim 9, characterized in that: The weight ratio of the styrene, 50% sodium bicarbonate solution, potassium persulfate and hydroxyethyl methacrylate is 1:2:1:1.

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