Multifunctional waterproof coating and its construction method

Abstract

This invention discloses a multifunctional waterproof coating and its construction method, belonging to the field of waterproof coatings, including liquid and powder components. The liquid component comprises the following parts by weight: 40-100 parts acrylic emulsion, 0-60 parts water, 0.1-1 parts paraffin wax, 0.1-1 parts tartaric acid, 0.1-1 parts polybasic acid, 0.1-0.5 parts preservative and bactericide, 0.1-1 parts defoamer, 0.1-3 parts antifreeze, 0.1-2 parts thickener, 0.1-3 parts substrate wetting agent, and 0.1-2 parts dispersant. The powder component comprises the following parts by weight: 10-50 parts composite silicate cement, 10-30 parts high-alumina cement, 10-40 parts quartz sand, 1-20 parts quartz powder, and 1-20 parts heavy calcium carbonate. The waterproof coating provided by this invention maintains an applicable viscosity within the specified construction time. When the waterproof coating stops rolling, it forms many protruding burrs, which can quickly dry on the surface. This ensures a larger contact area between the waterproof coating on the back of the tile and the waterproof coating on the wall, reducing the occurrence of tile hollowing and falling off, and improving the bonding strength between the tile and the wall.

Description

Technical Field

[0001] This invention relates to the field of waterproof coatings, and in particular to a multifunctional waterproof coating and its application method. Background Technology

[0002] In current residential renovations, tiles are typically chosen for the walls of kitchens and bathrooms. The existing tile-laying process involves first applying a wall primer to the bare wall, then, after the primer dries, applying two coats of K11 rigid waterproof mortar. These two coats of waterproof mortar are applied over two days, and after drying for 1-7 days, the tiles (with adhesive backing) are then applied onto the waterproof mortar layer using tile adhesive. However, conventional emulsion-based tile adhesives require 4-24 hours to dry on the tile itself before being applied to the waterproof mortar layer. Therefore, the current tile-laying process is more complex and time-consuming.

[0003] Furthermore, the application of wall primers, waterproof mortars, and tile adhesives is subject to uncertainties. For example, when applying wall primers, insufficient application or excessively low or high ambient temperatures can easily lead to hollow tiles and tile detachment. Similarly, adding too much water to waterproof mortar can result in uneven mortar layer thickness, affecting tile adhesion. Additionally, high humidity during tile adhesive application slows the drying process, making it difficult for workers to control tile laying time, which can lead to tiles detaching after being laid on the waterproof mortar layer.

[0004] Therefore, existing tile laying processes have problems such as numerous steps, long time consumption, and construction uncertainty, making it impossible to ensure that tiles are firmly laid on the wall.

[0005] It is evident that existing technologies still need improvement and enhancement. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of this invention is to provide a multifunctional waterproof coating and its construction method, which aims to solve the problems of existing tile laying processes having many steps, long time consumption, and construction uncertainty, and failing to ensure that the tiles are firmly laid on the wall.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A multifunctional waterproof coating comprises a liquid and a powder; the weight ratio of the liquid to the powder is 1:0.8-3; the liquid comprises the following components by weight: 40-100 parts acrylic emulsion, 0-60 parts water, 0.1-1 parts paraffin wax, 0.1-1 parts tartaric acid, 0.1-1 parts polybasic acid, 0.1-0.5 parts preservative and bactericide, 0.1-1 parts defoamer, 0.1-3 parts antifreeze, 0.1-2 parts thickener, 0.1-3 parts substrate wetting agent, and 0.1-2 parts dispersant; the powder comprises the following components by weight: 10-50 parts composite silicate cement, 10-30 parts high-alumina cement, 10-40 parts quartz sand, 1-20 parts quartz powder, and 1-20 parts heavy calcium carbonate.

[0009] Furthermore, the acrylate emulsion comprises the following components in parts by weight:

[0010] 398-408 parts deionized water, 400-410 parts butyl acrylate, 150-155 parts styrene, 6-10 parts acrylamide, 6-10 parts emulsifier, 1.8-3.8 parts initiator, 2.5-3 parts oxidant, and 1.2-1.5 parts reducing agent.

[0011] Furthermore, the emulsifier is sodium dodecyl diphenyl ether disulfonate.

[0012] Furthermore, the particle size of the propylene ester emulsion is 100-200 nm.

[0013] Furthermore, the polyacid is at least one of adipic acid, 1,4-cyclohexanedicarboxylic acid, and phthalic acid.

[0014] Furthermore, the substrate wetting agent is at least one of propylene oxide glycerol ether, alkylphenol polyoxyethylene ether, and EO / PO block copolymer.

[0015] Furthermore, the thickener is at least one of bentonite, alkali-swellable acrylic acid, nonionic polyurethane, and cellulose ethers.

[0016] Furthermore, the method for preparing the acrylate emulsion includes the following steps:

[0017] A001. Add 208 parts of deionized water to the polymerization reactor, and raise the temperature inside the polymerization reactor to 89-91℃ to obtain the base liquid A;

[0018] A002. At room temperature and pressure, add 160 parts of deionized water, 400-410 parts of butyl acrylate, 150-155 parts of styrene, 6-10 parts of acrylamide, and 6-10 parts of emulsifier to a pre-emulsion tank, and stir to mix evenly to obtain pre-emulsion B.

[0019] A003. Add 1-3 parts of initiator and 5 parts of deionized water to the initiator container at room temperature and pressure, and stir to mix evenly to obtain initiator solution C;

[0020] A004. At room temperature and pressure, add 0.8 parts of initiator and 25 parts of deionized water to the initiator container, stir and mix evenly to obtain initiator solution D;

[0021] A005. Mix 2.5-4 parts of oxidant with 5 parts of deionized water until homogeneous to obtain oxidant solution E;

[0022] A006. Mix 1.2-1.5 parts of reducing agent with 5 parts of deionized water until homogeneous to obtain reducing agent solution F;

[0023] A007. Add 2% by weight of pre-emulsion B and all of the initiator solution C to the polymerization reactor. After the addition is completed, keep it warm for 20 minutes. Then, add the remaining pre-emulsion B and all of the initiator solution D to the polymerization reactor at the same time. The addition time is controlled at 240 minutes.

[0024] A008. After the remaining pre-emulsion B and all of the initiator solution D have been added, control the temperature inside the polymerization reactor at 92±1℃ and maintain this temperature for 90 minutes. After the maintenance period, lower the temperature inside the polymerization reactor to 75±1℃, and simultaneously add oxidant solution E and reducing agent solution F over a period of 30 minutes. A009. After the oxidant solution E and reducing agent solution F have been added, lower the temperature inside the polymerization reactor to <40℃, and then adjust the pH of the acrylate emulsion to 7-9 using a pH adjuster. After the acrylate emulsion is stirred evenly, filter it out.

[0025] Furthermore, the oxidant is tert-butyl hydroperoxide, the reducing agent is sodium metabisulfite, and the pH adjuster is ammonia.

[0026] Furthermore, the present invention also provides a method for applying the aforementioned multifunctional waterproof coating, comprising the following steps:

[0027] S001. The liquid and powder are mixed at a weight ratio of 1:0.8-3 to obtain the multifunctional waterproof coating.

[0028] S002. Apply one coat of the multi-functional waterproof coating to the wall surface and the back of the tile using a textured roller or toothed knife. After applying the multi-functional waterproof coating to the back of the tile, immediately lay the tile on the wall surface with the multi-functional waterproof coating applied, and then press for 10 seconds to ensure that the multi-functional waterproof coating on the wall surface and the multi-functional waterproof coating on the back of the tile are in full contact.

[0029] Beneficial effects:

[0030] This invention provides a multifunctional waterproof coating and its application method. By using paraffin wax, tartaric acid, polybasic acids, and a substrate wetting agent in the liquid component, the process performance of the waterproof coating is improved, resulting in better fluidity during roller application. The coating can spread on the surface of the substrate and effectively wet and penetrate into the wall, thus reinforcing the wall. Furthermore, by using a thickener in the liquid component and simultaneously incorporating composite silicate cement and high-alumina cement in the powder component, and by strictly controlling the weight ratio of the liquid to the powder component, the waterproof coating maintains an applicable viscosity within the specified application time. When roller application stops, numerous raised burrs form, which dry quickly, ensuring a larger contact area between the waterproof coating on the back of the tile and the waterproof coating on the wall. This reduces the occurrence of tile hollowing and falling off, significantly improving the bonding strength between the tile and the wall.

[0031] The multifunctional waterproof coating provided by this invention can replace the materials used in existing tile laying processes, and allows tiles to be directly laid on the wall surface using the multifunctional waterproof coating. Therefore, the construction method of the multifunctional waterproof coating provided by this invention has fewer construction steps and shorter construction time, and can ensure that the tiles are firmly laid on the wall surface. Attached Figure Description

[0032] Figure 1 A flowchart illustrating the construction process of the multifunctional waterproof coating provided by this invention.

[0033] Figure 2 This is a schematic diagram of tile laying using the multifunctional waterproof coating provided by the present invention. Detailed Implementation

[0034] This invention provides a multifunctional waterproof coating and its application method. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0035] A multifunctional waterproof coating is a two-component waterproof coating comprising a liquid and a powder; the weight ratio of the liquid to the powder is 1:0.8-3; the liquid comprises the following components by weight: 40-100 parts acrylic emulsion, 0-60 parts water, 0.1-1 parts paraffin wax, 0.1-1 parts tartaric acid, 0.1-1 parts polybasic acid, 0.1-0.5 parts preservative and bactericide, 0.1-1 parts defoamer, 0.1-3 parts antifreeze, 0.1-2 parts thickener, 0.1-3 parts substrate wetting agent, and 0.1-2 parts dispersant; the powder comprises the following components by weight: 10-50 parts composite silicate cement, 10-30 parts high-alumina cement, 10-40 parts quartz sand, 1-20 parts quartz powder, and 1-20 parts heavy calcium carbonate.

[0036] In the above liquid composition, the acrylic emulsion imparts film-forming ability to the waterproof coating, allowing it to cover the wall surface and the back of tiles to form a waterproof coating layer. Paraffin wax, tartaric acid, polybasic acids, and substrate wetting agents improve the processability of the waterproof coating, giving it better fluidity during roller application. This allows the coating to spread on the substrate surface and effectively wet and penetrate into the wall, thus reinforcing the wall. Thickeners give the waterproof coating high thixotropy; when roller application stops, numerous raised burrs (roughening effect) form on the surface of the waterproof coating. Figure 2 As shown, similar hooks can increase the contact area between the waterproof coating on the back of the tile and the waterproof coating on the wall, thus significantly improving the bonding strength between the tile and the wall.

[0037] In the aforementioned powder composition, quartz sand, quartz powder, and heavy calcium carbonate serve as fillers. These fillers can be incorporated into composite silicate cement and high-alumina cement to make the powder denser, thereby enhancing the waterproofing ability of the multi-functional waterproof coating. High-alumina cement dries faster than composite silicate cement. Using composite silicate cement in combination with high-alumina cement ensures that when the waterproof coating application stops, the burrs on the surface of the waterproof coating can dry quickly and are less prone to deformation. This guarantees a larger contact area between the waterproof coating on the back of the tile and the waterproof coating on the wall, reducing the occurrence of tile hollowing and falling off.

[0038] When the weight ratio of liquid to powder is 1:0.8-3, the multifunctional waterproof coating can have a suitable application viscosity, which makes the waterproof coating have better fluidity when rolled, and when the rolling stops, the waterproof coating can form burrs due to its high thixotropy.

[0039] Furthermore, the acrylate emulsion comprises the following components in parts by weight:

[0040] 398-408 parts deionized water, 400-410 parts butyl acrylate, 150-155 parts styrene, 6-10 parts acrylamide, 6-10 parts emulsifier, 1.8-3.8 parts initiator, 2.5-3 parts oxidant, and 1.2-1.5 parts reducing agent.

[0041] In the above-mentioned acrylic emulsion composition, butyl acrylate is a soft monomer and styrene is a hard monomer. When the soft and hard monomers are used in combination as described above, the waterproof coating has better flexibility and elasticity after film formation, and a higher elongation at break. When cracks appear on the substrate coated with the waterproof coating, the coating is less likely to crack along with the substrate, and can play a waterproof role for a long time. Acrylamide has amide bonds and carbon-carbon double bonds in its molecular structure. The presence of carbon-carbon double bonds allows acrylamide to copolymerize well into the acrylic copolymer, thereby improving the stability of the acrylic copolymer and the adhesion of the waterproof coating containing the acrylic emulsion. The amide bond has good hydrophilicity, which makes the acrylic copolymer dispersible in water, less prone to aggregation, and prevents demulsification.

[0042] Furthermore, the emulsifier is sodium dodecyl diphenyl ether disulfonate. The molecular structure of sodium dodecyl diphenyl ether disulfonate contains a benzene ring and a sulfonic acid group, thus exhibiting both hydrophilic and lipophilic properties. This reduces the surface tension of emulsion droplets, promoting droplet formation and splitting. Simultaneously, sodium dodecyl diphenyl ether disulfonate can charge the surface of emulsion droplets, thereby reducing the particle size of the acrylic emulsion. At the same solid content, the acrylic emulsion has a smaller particle size, resulting in higher viscosity and better uniform distribution within the waterproof coating. This makes the thixotropy of the waterproof coating easier to control, ensuring that the thixotropy meets the requirements for tile installation.

[0043] This invention uses sodium dodecyl diphenyl ether disulfonate as an emulsifier, which enables controllable emulsion particle size. Compared with other types of acrylic emulsions, the particle size of propylene ester emulsion can be 100-200 nm.

[0044] In the multifunctional waterproof coating provided by this invention, the polybasic acid is at least one selected from adipic acid, 1,4-cyclohexanedicarboxylic acid, and phthalic acid. The substrate wetting agent is at least one selected from propylene oxide glycerol ether, alkylphenol polyoxyethylene ether, and EO / PO block copolymer. The thickener is at least one selected from bentonite, alkali-swellable acrylic acid, nonionic polyurethane, and cellulose ethers.

[0045] Furthermore, the method for preparing the acrylate emulsion includes the following steps:

[0046] A001. Add 208 parts of deionized water to the polymerization reactor, and raise the temperature inside the polymerization reactor to 89-91℃ to obtain the base liquid A;

[0047] A002. At room temperature and pressure, add 160 parts of deionized water, 400-410 parts of butyl acrylate, 150-155 parts of styrene, 6-10 parts of acrylamide, and 6-10 parts of emulsifier to a pre-emulsion tank, and stir to mix evenly to obtain pre-emulsion B.

[0048] A003. Add 1-3 parts of initiator and 5 parts of deionized water to the initiator container at room temperature and pressure, and stir to mix evenly to obtain initiator solution C;

[0049] A004. At room temperature and pressure, add 0.8 parts of initiator and 25 parts of deionized water to the initiator container, stir and mix evenly to obtain initiator solution D;

[0050] A005. Mix 2.5-4 parts of oxidant with 5 parts of deionized water until homogeneous to obtain oxidant solution E;

[0051] A006. Mix 1.2-1.5 parts of reducing agent with 5 parts of deionized water until homogeneous to obtain reducing agent solution F;

[0052] A007. Add 2% by weight of pre-emulsion B and all of the initiator solution C to the polymerization reactor. After the addition is completed, keep it warm for 20 minutes. Then, add the remaining pre-emulsion B and all of the initiator solution D to the polymerization reactor at the same time. The addition time is controlled at 240 minutes.

[0053] A008. After the remaining pre-emulsion B and all of the initiator solution D have been added, control the temperature inside the polymerization reactor at 92±1℃ and maintain this temperature for 90 minutes. After the maintenance period, lower the temperature inside the polymerization reactor to 75±1℃, and simultaneously add oxidant solution E and reducing agent solution F over a period of 30 minutes. A009. After the oxidant solution E and reducing agent solution F have been added, lower the temperature inside the polymerization reactor to <40℃, and then adjust the pH of the acrylate emulsion to 7-9 using a pH adjuster. After the acrylate emulsion is stirred evenly, filter it out.

[0054] Furthermore, the oxidant is tert-butyl hydroperoxide, the reducing agent is sodium metabisulfite, and the pH adjuster is ammonia. The oxidant and reducing agent can be used to treat residual monomers in propylene ester emulsions, improving the conversion efficiency of soft and hard monomers, eliminating irritating odors, reducing paint odor, and protecting the environment while also improving the health of construction workers.

[0055] The method for preparing the acrylate emulsion of this invention employs a seed pre-emulsification semi-continuous dropwise addition process. The temperature is controllable, the acrylate polymer reacts fully, and each component can polymerize stably according to the design, resulting in low gel efficiency. Furthermore, hot water or steam is used as the heating medium during preparation, which is readily available and recyclable. The acrylate emulsion can be prepared simply by heating and stirring, making the operation convenient, the processing cost low, and the safety high.

[0056] like Figure 1 As shown, the present invention also provides a method for applying the aforementioned multifunctional waterproof coating, comprising the following steps:

[0057] S001. The liquid and powder are mixed at a weight ratio of 1:0.8-3 to obtain the multifunctional waterproof coating.

[0058] S002. Apply one coat of the multi-functional waterproof coating to the wall surface and the back of the tile using a textured roller or toothed knife. After applying the multi-functional waterproof coating to the back of the tile, immediately lay the tile on the wall surface with the multi-functional waterproof coating applied, and then press for 10 seconds to ensure that the multi-functional waterproof coating on the wall surface and the multi-functional waterproof coating on the back of the tile are in full contact.

[0059] The construction method of the multifunctional waterproof coating provided by this invention has fewer construction steps and shorter construction time, and can ensure that the tiles are firmly laid on the wall.

[0060] To further illustrate the multifunctional waterproof coating provided by the present invention, the following embodiments are provided.

[0061] Example 1

[0062] This embodiment provides a multifunctional waterproof coating, comprising a liquid and a powder; the weight ratio of the liquid to the powder is 1:0.8; the liquid comprises the following components by weight: 40 parts acrylic emulsion, 0.1 parts paraffin wax, 0.1 parts tartaric acid, 0.1 parts adipic acid, 0.1 parts preservative and bactericide, 0.1 parts defoamer, 0.1 parts antifreeze, 0.1 parts bentonite, 0.1 parts propylene oxide glycerol ether, and 0.1 parts dispersant; the powder comprises the following components by weight: 10 parts composite silicate cement, 10 parts high-alumina cement, 10 parts quartz sand, 1 part quartz powder, and 1 part heavy calcium carbonate.

[0063] The acrylate emulsion comprises the following components in parts by weight:

[0064] 408 parts deionized water, 400 parts butyl acrylate, 150 parts styrene, 6 parts acrylamide, 6 parts sodium dodecyl diphenyl ether disulfonate, 1.8 parts initiator (sodium persulfate), 2.5 parts tert-butyl hydroperoxide, and 1.2 parts sodium metabisulfite.

[0065] The method for preparing the acrylate emulsion includes the following steps:

[0066] A001. Add 208 parts of deionized water to the polymerization reactor, and raise the temperature inside the polymerization reactor to 89-91℃ to obtain the base liquid A;

[0067] A002. At room temperature and pressure, add 160 parts of deionized water, 400 parts of butyl acrylate, 150 parts of styrene, 6 parts of acrylamide, and 6 parts of sodium dodecyl diphenyl ether disulfonate to a pre-emulsion tank, and stir to mix evenly to obtain pre-emulsion B.

[0068] A003. At room temperature and pressure, add 1 part sodium persulfate and 5 parts deionized water to the initiator container, stir and mix evenly to obtain initiator solution C;

[0069] A004. At room temperature and pressure, add 0.8 parts of sodium persulfate and 25 parts of deionized water to the initiator container, stir and mix evenly to obtain initiator solution D;

[0070] A005. Prepare oxidant solution E by mixing 2.5 parts of tert-butyl hydrogen peroxide with 5 parts of deionized water until homogeneous;

[0071] A006. Mix 1.2 parts of sodium metabisulfite with 5 parts of deionized water to obtain reducing agent solution F;

[0072] A007. Add 2% by weight of pre-emulsion B and all of the initiator solution C to the polymerization reactor. After the addition is completed, keep it warm for 20 minutes. Then, add the remaining pre-emulsion B and all of the initiator solution D to the polymerization reactor at the same time. The addition time is controlled at 240 minutes.

[0073] A008. After the remaining pre-emulsion B and all the initiator solution D have been added, control the temperature inside the polymerization reactor at 92±1℃ and keep it at that temperature for 90 minutes. After the temperature is kept at that temperature, lower the temperature inside the polymerization reactor to 75±1℃ and add oxidant solution E and reducing agent solution F at the same time for 30 minutes.

[0074] After the oxidizing agent solution E and the reducing agent solution F are added dropwise, the temperature inside the polymerization reactor is lowered to <40℃. Then, the pH value of the acrylate emulsion is adjusted to 7-9 with ammonia water. After the acrylate emulsion is stirred evenly, it is filtered and discharged.

[0075] Example 2

[0076] This embodiment provides a multifunctional waterproof coating, comprising a liquid and a powder; the weight ratio of the liquid to the powder is 1:1.5; the liquid comprises the following components by weight: 80 parts acrylic emulsion, 30 parts water, 0.5 parts paraffin wax, 0.5 parts tartaric acid, 0.5 parts 1,4-cyclohexanedicarboxylic acid, 0.3 parts preservative and bactericide, 0.5 parts defoamer, 1.5 parts antifreeze, 1 part alkali-swellable acrylic acid, 1.5 parts alkylphenol polyoxyethylene ether, and 1 part dispersant; the powder comprises the following components by weight: 30 parts composite silicate cement, 20 parts high-alumina cement, 25 parts quartz sand, 10 parts quartz powder, and 10 parts heavy calcium carbonate.

[0077] The acrylate emulsion comprises the following components in parts by weight:

[0078] 408 parts deionized water, 407 parts butyl acrylate, 151 parts styrene, 8 parts acrylamide, 8 parts sodium dodecyl diphenyl ether disulfonate, 2.8 parts initiator (sodium persulfate), 2.9 parts tert-butyl hydroperoxide, and 1.45 parts sodium metabisulfite.

[0079] The preparation method of the acrylate emulsion is the same as that in Example 1, and the initiator solution D includes 2 parts of sodium persulfate and 5 parts of deionized water.

[0080] Example 3

[0081] This embodiment provides a multifunctional waterproof coating, comprising a liquid and a powder; the weight ratio of the liquid to the powder is 1:3; the liquid comprises the following components by weight: 100 parts acrylic emulsion, 60 parts water, 1 part paraffin wax, 1 part tartaric acid, 1 part phthalic acid, 0.5 parts preservative and bactericide, 1 part defoamer, 3 parts antifreeze, 2 parts cellulose ether, 3 parts EO / PO block copolymer, and 2 parts dispersant; the powder comprises the following components by weight: 50 parts composite silicate cement, 30 parts high-alumina cement, 40 parts quartz sand, 20 parts quartz powder, and 20 parts heavy calcium carbonate.

[0082] The acrylate emulsion comprises the following components in parts by weight:

[0083] 408 parts deionized water, 410 parts butyl acrylate, 155 parts styrene, 10 parts acrylamide, 10 parts sodium dodecyl diphenyl ether disulfonate, 3.8 parts initiator (sodium persulfate), 3 parts tert-butyl hydroperoxide, and 1.5 parts sodium metabisulfite.

[0084] The preparation method of the acrylate emulsion is the same as that in Example 1, and the initiator solution D includes 3 parts of sodium persulfate and 5 parts of deionized water.

[0085] According to the provisions of the standard GB / T 25181-2019 Premixed Mortar, the tensile bond strength of the multifunctional waterproof coating prepared in Example 1 was tested. The test results showed that the original strength was 1.1 MPa and the strength after immersion in water was 0.6 MPa, which met the performance index requirements specified in part 6.2.5 of the standard. This indicates that the multifunctional waterproof coating provided by the present invention can ensure that the tiles are firmly laid on the wall, and the coating has the advantages of fewer construction steps and shorter construction time.

[0086] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solution and inventive concept of the present invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A multifunctional waterproof coating, characterized in that, It consists of liquid and powder; the weight ratio of the liquid to the powder is 1:0.

8. The liquid consists of the following components in parts by weight: 40 parts acrylic emulsion, 0.1 parts paraffin, 0.1 parts tartaric acid, 0.1 parts polybasic acid, 0.1 parts preservative and bactericide, 0.1 parts defoamer, 0.1 parts antifreeze, 0.1 parts thickener, 0.1 parts substrate wetting agent, and 0.1 parts dispersant; The powder is composed of the following components in parts by weight: 10 parts composite silicate cement, 10 parts high alumina cement, 10 parts quartz sand, 1 part quartz powder, and 1 part heavy calcium carbonate; The acrylate emulsion comprises the following raw materials in parts by weight: 408 parts deionized water, 400 parts butyl acrylate, 150 parts styrene, 6 parts acrylamide, 6 parts emulsifier, 1.8 parts initiator, 2.5 parts oxidant, and 1.2 parts reducing agent; The emulsifier is sodium dodecyl diphenyl ether disulfonate; the particle size of the acrylate emulsion is 100-200 nm. The polyacid is at least one of adipic acid, 1,4-cyclohexanedicarboxylic acid, and phthalic acid.

2. The multifunctional waterproof coating according to claim 1, characterized in that, The substrate wetting agent is at least one of propylene oxide glycerol ether, alkylphenol polyoxyethylene ether, and EO / PO block copolymer.

3. The multifunctional waterproof coating according to claim 1, characterized in that, The thickener is at least one of bentonite, alkali-swellable acrylic thickener, nonionic polyurethane, and cellulose ether.

4. The multifunctional waterproof coating according to claim 1, characterized in that, The method for preparing the acrylate emulsion includes the following steps: A001. Add 208 parts of deionized water to the polymerization reactor, and raise the temperature inside the polymerization reactor to 89-91℃ to obtain the base liquid A; A002. At room temperature and pressure, add 160 parts of deionized water, 400 parts of butyl acrylate, 150 parts of styrene, 6 parts of acrylamide, and 6 parts of emulsifier to a pre-emulsion tank, and stir to mix evenly to obtain pre-emulsion B. A003. At room temperature and pressure, add 1 part of initiator and 5 parts of deionized water to the initiator container, stir and mix evenly to obtain initiator solution C; A004. At room temperature and pressure, add 0.8 parts of initiator and 25 parts of deionized water to the initiator container, stir and mix evenly to obtain initiator solution D; A005. Mix 2.5 parts of oxidant with 5 parts of deionized water until homogeneous to obtain oxidant solution E; A006. Mix 1.2 parts of reducing agent with 5 parts of deionized water until homogeneous to obtain reducing agent solution F; A007. Add 2% by weight of preemulsion B and all of the initiator solution C to the polymerization reactor. After the addition is completed, keep it warm for 20 minutes. Then, add the remaining preemulsion B and all of the initiator solution D to the polymerization reactor at the same time. The addition time is controlled at 240 minutes. A008. After the remaining pre-emulsion B and all the initiator solution D have been added, control the temperature inside the polymerization reactor at 92±1℃ and keep it at that temperature for 90 minutes. After the temperature is kept at that temperature, lower the temperature inside the polymerization reactor to 75±1℃ and add oxidant solution E and reducing agent solution F at the same time for 30 minutes. A009. After the oxidizing agent solution E and the reducing agent solution F are added dropwise, the temperature inside the polymerization reactor is lowered to <40℃. Then, the pH value of the acrylate emulsion is adjusted to 7-9 using a pH adjuster. After the acrylate emulsion is stirred evenly, it is filtered and discharged.

5. The multifunctional waterproof coating according to claim 4, characterized in that, The oxidant is tert-butyl hydroperoxide, the reducing agent is sodium metabisulfite, and the pH adjuster is ammonia.

6. A method for applying the multifunctional waterproof coating according to any one of claims 1-5, characterized in that, Includes the following steps: S001. The liquid and powder are mixed at a weight ratio of 1:0.8 to obtain the multifunctional waterproof coating. S002. Apply one coat of the multi-functional waterproof coating to the wall surface and the back of the tile using a textured roller or toothed knife. After applying the multi-functional waterproof coating to the back of the tile, immediately lay the tile on the wall surface with the multi-functional waterproof coating applied, and then press for 10 seconds to ensure that the multi-functional waterproof coating on the wall surface and the multi-functional waterproof coating on the back of the tile are in full contact.

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