Waterproof and decorative integrated exterior wall coating and preparation method thereof

Abstract

The invention discloses a waterproof and decorative integrated exterior wall coating and a preparation method thereof. The waterproof and decorative integrated exterior wall coating is composed of a component A and a component B which are independently packaged, the component A is prepared from the following raw materials in parts by weight: 140 to 160 parts of cement, 600 to 700 parts of calcium carbonate, 18 to 22 parts of active kaolin, 150 to 190 parts of pigment and 0.2 to 0.4 part of tartaric acid; the component B is prepared from the following raw materials in parts by weight: 25 to 35 parts of ethylene glycol, 2.2 to 2.7 parts of sterilizing agent, 700 to 900 parts of acrylic emulsion, 2 to 4 parts of dispersing agent, 1.2 to 1.8 parts of wetting agent, 2.2 to 2.8 parts of defoaming agent, 1.3 to 1.8 parts of hydroxyethyl cellulose, 1.2 to 1.8 parts of pH (Potential of Hydrogen) regulator, 60 to 80 parts of pigment, 40 to 60 parts of coalescing agent, 8 to 12 parts of organosilicon waterproofing agent and 25 to 35 parts of water. According to the waterproof and decorative integrated exterior wall coating disclosed by the invention, by limiting the types and dosages of all the raw materials and under the combined action of all the raw materials, the prepared waterproof and decorative integrated exterior wall coating has excellent antibacterial and corrosion-resistant properties, and meanwhile, the decorative effect is achieved by adding pigments and fillers.

Description

Technical Field

[0001] This invention relates to the field of coating technology, specifically to a waterproof and decorative integrated exterior wall coating and its preparation method. Background Technology

[0002] Paint is a liquid that is applied to the surface of an object to be protected or decorated, and forms a continuous film that adheres firmly to the object. It is mainly composed of resin, oil, or emulsion, with or without pigments and fillers, and with appropriate additives, and is prepared with organic solvents or water.

[0003] With the rapid development of China's real estate industry, the demand for exterior wall coatings is increasing. Exterior wall coatings have higher requirements for performance such as anti-aging, water resistance, and acid and alkali corrosion resistance. Existing waterproof materials have poor anti-aging and waterproof performance and do not have exterior wall decoration functions.

[0004] In view of this, the present invention is hereby proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated waterproof and decorative exterior wall coating and its preparation method. The integrated waterproof and decorative exterior wall coating of this invention has excellent aging resistance and waterproof performance, and also has decorative function through the selection of pigments.

[0006] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is adopted:

[0007] The first aspect of this invention provides an integrated waterproof and decorative exterior wall coating, which is composed of separately packaged component A and component B;

[0008] Component A comprises the following raw materials in parts by weight:

[0009] 140-160 parts cement, 600-700 parts calcium carbonate, 18-22 parts activated kaolin, 150-190 parts pigment, and 0.2-0.4 parts tartaric acid;

[0010] Component B comprises the following raw materials in parts by weight:

[0011] The ingredients are: 25-35 parts ethylene glycol, 2.2-2.7 parts bactericide, 700-900 parts acrylic emulsion, 2-4 parts dispersant, 1.2-1.8 parts wetting agent, 2.2-2.8 parts defoamer, 1.3-1.8 parts hydroxyethyl cellulose, 1.2-1.8 parts pH adjuster, 60-80 parts pigment, 40-60 parts film-forming aid, 8-12 parts organosilicon waterproofing agent, and 25-35 parts water.

[0012] Preferably, the waterproof and decorative integrated exterior wall coating is composed of component A and component B;

[0013] Component A comprises the following raw materials in parts by weight:

[0014] 150 parts cement, 660 parts calcium carbonate, 20 parts activated kaolin, 170 parts pigment and 0.3 parts tartaric acid;

[0015] Component B comprises the following raw materials in parts by weight:

[0016] 30 parts ethylene glycol, 2.5 parts bactericide, 800 parts acrylic emulsion, 3 parts dispersant, 1.5 parts wetting agent, 2.5 parts defoamer, 1.5 parts hydroxyethyl cellulose, 1.5 parts pH adjuster, 70 parts pigment, 48 parts film-forming aid, 10 parts silicone waterproofing agent, and 29.5 parts water.

[0017] Preferably, the bactericide includes at least one of zinc oxide, copper acetate, and pyrrolidone.

[0018] Preferably, the dispersant is an organophosphate dispersant, a polycarboxylic acid dispersant, or a polyvinyl alcohol dispersant.

[0019] Preferably, the wetting agent is a phosphite wetting agent or a fatty alcohol wetting agent.

[0020] Preferably, the defoamer is a polyether defoamer or an organosilicon defoamer.

[0021] Preferably, the film-forming aid is dodecyl alcohol ester, propylene glycol methyl ether, or propylene glycol ethyl ether;

[0022] The pH adjuster is aminomethylpropanol;

[0023] The pigment includes titanium dioxide.

[0024] Preferably, the mass ratio of component A to component B is 1:(0.8 to 1.2).

[0025] A second aspect of this invention provides a method for preparing an integrated waterproof and decorative exterior wall coating, the method comprising the following steps:

[0026] (a) Preparation of component A:

[0027] According to the weight ratio, the raw materials are mixed and stirred evenly to obtain the A component;

[0028] (b) Preparation of component B:

[0029] According to the weight ratio, under stirring conditions, ethylene glycol, bactericide, part of acrylic emulsion, dispersant, wetting agent and part of defoamer are added to water and stirred evenly. Then, part of hydroxyethyl cellulose and pH adjuster are added and stirred evenly. Finally, pigment is added and dispersed at high speed to obtain a mixture.

[0030] Add the remaining defoamer to the mixture and stir well. Then add the remaining acrylic emulsion, film-forming aid and silicone waterproofing agent and stir well. Finally add the remaining hydroxyethyl cellulose and stir well to obtain component B.

[0031] (c) According to the ratio of component A and component B, component A and component B are packaged separately to obtain the waterproof and decorative integrated exterior wall coating.

[0032] Preferably, in step (b), a portion of the acrylic emulsion accounts for 0.2 to 0.3 times the total amount of the acrylic emulsion;

[0033] Hydroxyethyl cellulose accounts for 0.6 to 0.7 times the total amount of hydroxyethyl cellulose.

[0034] Some defoamers account for 0.15 to 0.25 times the total amount of all defoamers.

[0035] Compared with the prior art, the beneficial effects of the present invention include at least the following:

[0036] This invention, by limiting the types and amounts of each raw material, enables the prepared integrated waterproof and decorative exterior wall coating to possess excellent antibacterial and anti-corrosion properties. Specifically, the cement in component A, combined with component B (acrylic emulsion), achieves a curing and waterproofing effect, while the addition of an organosilicon waterproofing agent further enhances the waterproofing effect. Additionally, the combination of activated kaolin and cement helps improve overall strength and prevent alkali reaction, while tartaric acid slows down the cement's setting time. Furthermore, the addition of ethylene glycol in component B improves the drying speed during application, preventing excessively rapid drying. The addition of wetting agents and dispersants improves the dispersion and wetting properties of fillers and pigments, enhancing stability. The film-forming aid, used in conjunction with the acrylic emulsion, lowers the minimum film-forming temperature, improves film-forming performance, and enhances the overall performance of the coating. In summary, the combined effect of all raw materials results in an integrated waterproof and decorative exterior wall coating with excellent antibacterial and anti-corrosion properties, while the addition of pigments and fillers achieves a decorative effect.

[0037] The waterproof and decorative integrated exterior wall coating of this invention does not have the distinction between primer, intermediate coat and topcoat. As a three-in-one product, it meets the technical requirements of both primer and topcoat. Detailed Implementation

[0038] The embodiments of the technical solution of the present invention will be described in detail below with reference to the examples. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and are therefore only examples, and should not be used to limit the scope of protection of the present invention.

[0039] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0040] The raw materials used in the following embodiments are as follows:

[0041] Cement: Aluminate cement, CA70G, purchased from Kenos;

[0042] Acrylic emulsion: TX-100 was purchased from Dow Chemical;

[0043] Bactericide: Zinc oxide;

[0044] Dispersant: SN-5040, purchased from Sannopco;

[0045] Wetting agent: BD109, purchased from Dow Chemical;

[0046] Defoamer: NXZ, purchased from Sannopco;

[0047] pH adjuster: AMP95, purchased from Angus;

[0048] Film-forming aid: dodecyl alcohol ester, purchased from Ruentex Chemicals;

[0049] Pigment: Titanium dioxide, purchased from Shandong Dongjia;

[0050] Silicone waterproofing agent: BS1306, purchased from Wacker.

[0051] Example 1

[0052] This embodiment is a waterproof and decorative integrated exterior wall coating, which consists of separately packaged component A and component B; the mass ratio of component A to component B is 1:0.8;

[0053] Component A comprises the following raw materials in parts by weight:

[0054] 140 parts cement, 700 parts calcium carbonate, 18 parts activated kaolin, 150 parts pigment and 0.4 parts tartaric acid;

[0055] Component B comprises the following raw materials in parts by weight:

[0056] 25 parts ethylene glycol, 2.7 parts bactericide, 700 parts acrylic emulsion, 2 parts dispersant, 1.2 parts wetting agent, 2.2 parts defoamer, 1.8 parts hydroxyethyl cellulose, 1.2 parts pH adjuster, 80 parts pigment, 40 parts film-forming aid, 8 parts silicone waterproofing agent, and 35 parts water.

[0057] The preparation method of the above-mentioned integrated waterproof and decorative exterior wall coating includes the following steps:

[0058] (a) Preparation of component A:

[0059] According to the weight ratio, the raw materials are mixed and stirred evenly to obtain the A component;

[0060] (b) Preparation of component B:

[0061] According to the weight ratio, under stirring conditions, ethylene glycol, bactericide, part of acrylic emulsion, dispersant, wetting agent and part of defoamer are added to water and stirred evenly. Then, part of hydroxyethyl cellulose and pH adjuster are added and stirred evenly. Finally, pigment is added and dispersed at high speed to obtain a mixture.

[0062] Add the remaining defoamer to the mixture and stir well. Then add the remaining acrylic emulsion, film-forming aid and silicone waterproofing agent and stir well. Finally add the remaining hydroxyethyl cellulose and stir well to obtain component B.

[0063] Of these, a portion of the acrylic emulsions accounted for 0.2 times the total amount of all acrylic emulsions; a portion of the hydroxyethyl cellulose accounted for 0.7 times the total amount of all hydroxyethyl cellulose; and a portion of the defoamer accounted for 0.15 times the total amount of all defoamers.

[0064] (c) According to the ratio of component A and component B, component A and component B are packaged separately to obtain the waterproof and decorative integrated exterior wall coating.

[0065] Example 2

[0066] This embodiment is a waterproof and decorative integrated exterior wall coating, which consists of separately packaged component A and component B; the mass ratio of component A to component B is 1:1.2;

[0067] Component A comprises the following raw materials in parts by weight:

[0068] 160 parts cement, 600 parts calcium carbonate, 22 parts activated kaolin, 190 parts pigment and 0.2 parts tartaric acid;

[0069] Component B comprises the following raw materials in parts by weight:

[0070] The ingredients are: 35 parts ethylene glycol, 2.2 parts bactericide, 900 parts acrylic emulsion, 4 parts dispersant, 1.8 parts wetting agent, 2.8 parts defoamer, 1.3 parts hydroxyethyl cellulose, 1.8 parts pH adjuster, 60 parts pigment, 60 parts film-forming aid, 12 parts silicone waterproofing agent, and 25 parts water.

[0071] The preparation method of the above-mentioned integrated waterproof and decorative exterior wall coating includes the following steps:

[0072] (a) Preparation of component A:

[0073] According to the weight ratio, the raw materials are mixed and stirred evenly to obtain the A component;

[0074] (b) Preparation of component B:

[0075] According to the weight ratio, under stirring conditions, ethylene glycol, bactericide, part of acrylic emulsion, dispersant, wetting agent and part of defoamer are added to water and stirred evenly. Then, part of hydroxyethyl cellulose and pH adjuster are added and stirred evenly. Finally, pigment is added and dispersed at high speed to obtain a mixture.

[0076] Add the remaining defoamer to the mixture and stir well. Then add the remaining acrylic emulsion, film-forming aid and silicone waterproofing agent and stir well. Finally add the remaining hydroxyethyl cellulose and stir well to obtain component B.

[0077] Of these, a portion of the acrylic emulsions accounted for 0.3 times the total amount of all acrylic emulsions; a portion of the hydroxyethyl cellulose accounted for 0.6 times the total amount of all hydroxyethyl cellulose; and a portion of the defoamer accounted for 0.25 times the total amount of all defoamers.

[0078] (c) According to the ratio of component A and component B, component A and component B are packaged separately to obtain the waterproof and decorative integrated exterior wall coating.

[0079] Example 3

[0080] This embodiment is a waterproof and decorative integrated exterior wall coating, which consists of separately packaged component A and component B; the mass ratio of component A to component B is 1:1.

[0081] Component A comprises the following raw materials in parts by weight:

[0082] 150 parts cement, 660 parts calcium carbonate, 20 parts activated kaolin, 170 parts pigment and 0.3 parts tartaric acid;

[0083] Component B comprises the following raw materials in parts by weight:

[0084] 30 parts ethylene glycol, 2.5 parts bactericide, 800 parts acrylic emulsion, 3 parts dispersant, 1.5 parts wetting agent, 2.5 parts defoamer, 1.5 parts hydroxyethyl cellulose, 1.5 parts pH adjuster, 70 parts pigment, 48 parts film-forming aid, 10 parts silicone waterproofing agent, and 29.5 parts water.

[0085] The preparation method of the above-mentioned integrated waterproof and decorative exterior wall coating includes the following steps:

[0086] (a) Preparation of component A:

[0087] According to the weight ratio, the raw materials are mixed and stirred evenly to obtain the A component;

[0088] (b) Preparation of component B:

[0089] According to the weight ratio, under stirring conditions, ethylene glycol, bactericide, part of acrylic emulsion, dispersant, wetting agent and part of defoamer are added to water and stirred evenly. Then, part of hydroxyethyl cellulose and pH adjuster are added and stirred evenly. Finally, pigment is added and dispersed at high speed to obtain a mixture.

[0090] Add the remaining defoamer to the mixture and stir well. Then add the remaining acrylic emulsion, film-forming aid and silicone waterproofing agent and stir well. Finally add the remaining hydroxyethyl cellulose and stir well to obtain component B.

[0091] Of these, a portion of the acrylic emulsion accounts for 0.25 times the total acrylic emulsion; a portion of the hydroxyethyl cellulose accounts for 0.65 times the total hydroxyethyl cellulose; and a portion of the defoamer accounts for 0.2 times the total defoamer.

[0092] (c) According to the ratio of component A and component B, component A and component B are packaged separately to obtain the waterproof and decorative integrated exterior wall coating.

[0093] Comparative Example 1

[0094] This comparative example is a waterproof and decorative integrated exterior wall coating, which consists of separately packaged component A and component B; the mass ratio of component A to component B is 1:1.

[0095] Component A comprises the following raw materials in parts by weight:

[0096] 660 parts calcium carbonate, 20 parts activated kaolin, 170 parts pigment, and 0.3 parts tartaric acid;

[0097] Component B comprises the following raw materials in parts by weight:

[0098] 30 parts ethylene glycol, 2.5 parts bactericide, 950 parts acrylic emulsion, 3 parts dispersant, 1.5 parts wetting agent, 2.5 parts defoamer, 1.5 parts hydroxyethyl cellulose, 1.5 parts pH adjuster, 70 parts pigment, 48 parts film-forming aid, 10 parts silicone waterproofing agent, and 29.5 parts water.

[0099] The preparation method of the above-mentioned integrated waterproof and decorative exterior wall coating includes the following steps:

[0100] (a) Preparation of component A:

[0101] According to the weight ratio, the raw materials are mixed and stirred evenly to obtain the A component;

[0102] (b) Preparation of component B:

[0103] According to the weight ratio, under stirring conditions, ethylene glycol, bactericide, part of acrylic emulsion, dispersant, wetting agent and part of defoamer are added to water and stirred evenly. Then, part of hydroxyethyl cellulose and pH adjuster are added and stirred evenly. Finally, pigment is added and dispersed at high speed to obtain a mixture.

[0104] Add the remaining defoamer to the mixture and stir well. Then add the remaining acrylic emulsion, film-forming aid and silicone waterproofing agent and stir well. Finally add the remaining hydroxyethyl cellulose and stir well to obtain component B.

[0105] Of these, a portion of the acrylic emulsion accounts for 0.25 times the total acrylic emulsion; a portion of the hydroxyethyl cellulose accounts for 0.65 times the total hydroxyethyl cellulose; and a portion of the defoamer accounts for 0.2 times the total defoamer.

[0106] (c) According to the ratio of component A and component B, component A and component B are packaged separately to obtain the waterproof and decorative integrated exterior wall coating.

[0107] Comparative Example 2

[0108] This comparative example is a waterproof and decorative integrated exterior wall coating, which consists of separately packaged component A and component B; the mass ratio of component A to component B is 1:1.

[0109] Component A comprises the following raw materials in parts by weight:

[0110] 150 parts cement, 680 parts calcium carbonate, 170 parts pigment, and 0.3 parts tartaric acid;

[0111] Component B comprises the following raw materials in parts by weight:

[0112] 30 parts ethylene glycol, 2.5 parts bactericide, 800 parts acrylic emulsion, 3 parts dispersant, 1.5 parts wetting agent, 2.5 parts defoamer, 1.5 parts hydroxyethyl cellulose, 1.5 parts pH adjuster, 70 parts pigment, 48 parts film-forming aid, 10 parts silicone waterproofing agent, and 29.5 parts water.

[0113] The preparation method of the above-mentioned integrated waterproof and decorative exterior wall coating includes the following steps:

[0114] (a) Preparation of component A:

[0115] According to the weight ratio, the raw materials are mixed and stirred evenly to obtain the A component;

[0116] (b) Preparation of component B:

[0117] According to the weight ratio, under stirring conditions, ethylene glycol, bactericide, part of acrylic emulsion, dispersant, wetting agent and part of defoamer are added to water and stirred evenly. Then, part of hydroxyethyl cellulose and pH adjuster are added and stirred evenly. Finally, pigment is added and dispersed at high speed to obtain a mixture.

[0118] Add the remaining defoamer to the mixture and stir well. Then add the remaining acrylic emulsion, film-forming aid and silicone waterproofing agent and stir well. Finally add the remaining hydroxyethyl cellulose and stir well to obtain component B.

[0119] Of these, a portion of the acrylic emulsion accounts for 0.25 times the total acrylic emulsion; a portion of the hydroxyethyl cellulose accounts for 0.65 times the total hydroxyethyl cellulose; and a portion of the defoamer accounts for 0.2 times the total defoamer.

[0120] (c) According to the ratio of component A and component B, component A and component B are packaged separately to obtain the waterproof and decorative integrated exterior wall coating.

[0121] Experimental Example

[0122] The waterproof and decorative integrated exterior wall coatings prepared in Example 3 and Comparative Examples 1-2 were obtained respectively;

[0123] After mixing components A and B of the above-mentioned integrated waterproof and decorative exterior wall coating, the performance of the coating was tested. The testing methods are shown in Table 1, and the test results are shown in Table 2.

[0124] Table 1

[0125]

[0126]

[0127] Table 2

[0128]

[0129] As shown in Table 2:

[0130] The waterproof and decorative integrated exterior wall coating prepared according to the embodiments of the present invention has superior performance.

[0131] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A waterproof and decorative integrated exterior wall coating, characterized in that, The waterproof and decorative integrated exterior wall coating consists of separately packaged component A and component B; Component A comprises the following raw materials in parts by weight: 140-160 parts cement, 600-700 parts calcium carbonate, 18-22 parts activated kaolin, 150-190 parts pigment, and 0.2-0.4 parts tartaric acid; Component B comprises the following raw materials in parts by weight: The ingredients are: 25-35 parts ethylene glycol, 2.2-2.7 parts bactericide, 700-900 parts acrylic emulsion, 2-4 parts dispersant, 1.2-1.8 parts wetting agent, 2.2-2.8 parts defoamer, 1.3-1.8 parts hydroxyethyl cellulose, 1.2-1.8 parts pH adjuster, 60-80 parts pigment, 40-60 parts film-forming aid, 8-12 parts organosilicon waterproofing agent, and 25-35 parts water.

2. The waterproof and decorative integrated exterior wall coating according to claim 1, characterized in that, The waterproof and decorative integrated exterior wall coating is composed of component A and component B; Component A comprises the following raw materials in parts by weight: 150 parts cement, 660 parts calcium carbonate, 20 parts activated kaolin, 170 parts pigment and 0.3 parts tartaric acid; Component B comprises the following raw materials in parts by weight: 30 parts ethylene glycol, 2.5 parts bactericide, 800 parts acrylic emulsion, 3 parts dispersant, 1.5 parts wetting agent, 2.5 parts defoamer, 1.5 parts hydroxyethyl cellulose, 1.5 parts pH adjuster, 70 parts pigment, 48 parts film-forming aid, 10 parts silicone waterproofing agent, and 29.5 parts water.

3. The waterproof and decorative integrated exterior wall coating according to claim 1, characterized in that, The bactericide includes at least one of zinc oxide, copper acetate, and pyrrolidone.

4. The waterproof and decorative integrated exterior wall coating according to claim 1, characterized in that, The dispersant is an organophosphate dispersant, a polycarboxylic acid dispersant, or a polyvinyl alcohol dispersant.

5. The waterproof and decorative integrated exterior wall coating according to claim 1, characterized in that, The wetting agent is a phosphite wetting agent or a fatty alcohol wetting agent.

6. The waterproof and decorative integrated exterior wall coating according to claim 1, characterized in that, The defoamer is a polyether defoamer or an organosilicon defoamer.

7. The waterproof and decorative integrated exterior wall coating according to claim 1, characterized in that, The film-forming aid is dodecyl alcohol ester, propylene glycol methyl ether, or propylene glycol ethyl ether; The pH adjuster is aminomethylpropanol; The pigment includes titanium dioxide.

8. The waterproof and decorative integrated exterior wall coating according to claim 1, characterized in that, The mass ratio of component A to component B is 1:(0.8 to 1.2).

9. The method for preparing the waterproof and decorative integrated exterior wall coating according to any one of claims 1 to 8, characterized in that, The preparation method includes the following steps: (a) Preparation of component A: According to the weight ratio, the raw materials are mixed and stirred evenly to obtain the A component; (b) Preparation of component B: According to the weight ratio, under stirring conditions, ethylene glycol, bactericide, part of acrylic emulsion, dispersant, wetting agent and part of defoamer are added to water and stirred evenly. Then, part of hydroxyethyl cellulose and pH adjuster are added and stirred evenly. Finally, pigment is added and dispersed at high speed to obtain a mixture. Add the remaining defoamer to the mixture and stir well. Then add the remaining acrylic emulsion, film-forming aid and silicone waterproofing agent and stir well. Finally add the remaining hydroxyethyl cellulose and stir well to obtain component B. (c) According to the ratio of component A and component B, component A and component B are packaged separately to obtain the waterproof and decorative integrated exterior wall coating.

10. The preparation method according to claim 9, characterized in that, In step (b), a portion of the acrylic emulsion accounts for 0.2 to 0.3 times the total amount of the acrylic emulsion; Hydroxyethyl cellulose accounts for 0.6 to 0.7 times the total amount of hydroxyethyl cellulose. Some defoamers account for 0.15 to 0.25 times the total amount of all defoamers.

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