High-strength antibacterial flexible waterproof material and preparation method thereof

Abstract

The invention provides a high-strength antibacterial flexible waterproof material and a preparation method thereof. The material comprises a component A, a component B and a component C in a weight ratio of 1: 1: (0.04-0.4), the component A comprises the following components in parts by weight: 5-10 parts of a high polymer material, 1-100 parts of reinforcing filler, 0.01-1 part of softening and reinforcing filler, 0.01-1 part of a first antibacterial agent and 1-50 parts of a reaction catalyst; the component B comprises the following components in parts by weight: 0.1-10 parts of a rheology modifier, 0.1-100 parts of a reinforcing whitening agent and 0.01-1 part of a second antibacterial agent; and the component C comprises 0.01-1 part by weight of a curing agent and 0.01-1 part by weight of a stabilizer. The method comprises the following steps: mixing the component A with water to obtain slurry A; mixing the component B with water and the component C to obtain slurry B1; and mixing the slurry A and the slurry B1, and grouting to obtain the flexible waterproof material. The mechanical strength and the antibacterial property of the flexible waterproof material are improved.

Description

Technical Field

[0001] The present application relates to the technical field of building waterproof materials, and particularly relates to a high-strength antibacterial flexible waterproof material and a preparation method thereof. Background Art

[0002] Highway construction is an important industry related to the national economy and people's livelihood, and plays a crucial role in China's economic and national defense construction. The Loess Plateau region is characterized by rolling hills, crisscrossed valleys, and steep slopes on both sides of the valleys. The landform types include river erosion and accumulation landform areas and hilly and gully landforms of the Loess Plateau. Therefore, in the highway construction in these areas, the construction of tunnels has a wide range and high difficulty, and tunnel diseases are prone to occur. These tunnel diseases mainly include lining structure deformation and settlement; lining cracks and spalling; lining water leakage and icing; roadbed heaving, cracking, and dislocation; road surface water seepage and icing, etc. Among them, tunnel water leakage is one of the more common and intractable problems. In some tunnel disease areas, the groundwater is mainly loess pore phreatic water, and the water-rich degree of the surrounding rock is weakly water-rich. After the excavation of the cavern, the water seepage is the main problem, and measures need to be taken for waterproof treatment.

[0003] Waterproof treatment is inseparable from waterproof materials and huge investments in waterproof projects. Among the waterproof materials, chemical grouting materials are one of the materials widely used at present. Chemical grouting is an engineering technology for treating foundation and concrete defects to ensure the smooth progress of the project or to improve the project quality. This technology is to prepare a certain chemical material into a solution and use a chemical grouting pump and other pressure feeding equipment to inject it into the formation or gap, so that it diffuses, gels, or solidifies to increase the formation strength, reduce the formation permeability, and prevent the formation from deforming. With the rapid development of grouting materials, grouting technology and equipment have also been greatly developed. The application scale of grouting technology projects is getting wider and wider, almost covering all geotechnical and civil engineering fields. At present, grouting materials have been widely used in many engineering fields such as dam foundation reinforcement and anti-seepage, mining and tunnel excavation, subway excavation, building rectification, concrete defect repair, and cultural relic protection.

[0004] How to efficiently prevent or repair water leakage points is still a hot issue in this field. Some traditional materials such as concrete and polyurethane often undergo compaction and other situations, resulting in secondary water leakage and unable to achieve the effect of long-term waterproofing with a single pouring. Secondly, the precursor materials of materials similar to cement and polyurethane have high viscosities, which causes such materials to only cover the surface of the water leakage point for protection and it is difficult to enter the internal gaps of the concrete for comprehensive protection, thus making it difficult to achieve more effective long-term waterproofing.

[0005] Although the existing materials on the market have been applied to some extent, their mechanical properties are poor, and their toughness and ductility are also poor, and they are not resistant to deformation under large strain conditions. Therefore, the development of waterproof materials with excellent mechanical properties will greatly expand their applications under more demanding conditions. Summary of the Invention

[0006] This application provides a high-strength antibacterial flexible waterproof material and a preparation method thereof to solve the above problems mentioned in the background art.

[0007] On the one hand, this application provides a high-strength antibacterial flexible waterproof material, which includes component A, component B, and component C with a weight ratio of 1:1:(0.04 - 0.4); Calculated by weight, the raw materials of component A include: 5 - 10 parts by weight of a polymer material, 1 - 100 parts by weight of a reinforcing filler, 0.01 - 1 part by weight of a flexibilizing and reinforcing filler, 0.01 - 1 part by weight of a first antibacterial agent, and 1 - 50 parts by weight of a reaction catalyst; Calculated by weight, the raw materials of component B include: 0.1 - 10 parts by weight of a rheology regulator, 0.1 - 100 parts by weight of a reinforcing and whitening agent, and 0.01 - 1 part by weight of a second antibacterial agent; Calculated by weight, the raw materials of component C include: 0.01 - 1 part by weight of a curing agent and 0.01 - 1 part by weight of a stabilizer.

[0008] Optionally, the polymer material includes one or more of PVP, PVB, PVA, MCC, and HPMC.

[0009] Optionally, the reinforcing filler includes one or more of calcium carbonate, titanium dioxide, talc powder, calcium sulfate, calcium chloride, and bentonite; The particle size of the reinforcing filler is 1000 - 1200 mesh.

[0010] Optionally, the flexibilizing and reinforcing filler includes one or more of silicone rubber powder, calcium carbonate, nano-silica, mica powder, talc powder, and montmorillonite.

[0011] Optionally, the first antibacterial agent and the second antibacterial agent have the same composition, and both the first antibacterial agent and the second antibacterial agent include one or more of potassium phosphate, titanium dioxide, calcium chloride, zinc oxide, and quaternary ammonium salt.

[0012] Optionally, the reaction catalyst includes one or more of boric acid, metasilicic acid, phosphoric acid, citric acid, oxalic acid, and tartaric acid.

[0013] Optionally, the rheology regulator includes one or more of PDMS, BYK - 3900P, PE, PTFE, nano-silica, modified bentonite, modified kaolin, organically modified montmorillonite, and diatomaceous earth.

[0014] Optionally, the reinforcing brightening agent includes one or more of calcium carbonate, titanium dioxide, talc powder, calcium sulfate, calcium chloride, bentonite, and wollastonite; The particle size of the reinforcing brightening agent is 1000 - 1200 mesh.

[0015] On the other hand, the present application provides a preparation method of a high-strength antibacterial flexible waterproof material. This preparation method is used to prepare the above flexible waterproof material, and the preparation method includes the following steps: (1) By weight, take a polymer material, a reinforcing filler, a flexibility-enhancing and reinforcing filler, a first antibacterial agent, and a reaction catalyst and mix them to obtain component A, and mix component A with water and stir to obtain slurry A; (2) By weight, take a rheology regulator, a reinforcing brightening agent, and a second antibacterial agent and mix them to obtain component B, and mix component B with water and stir to obtain slurry B; (3) By weight, take a curing agent and a stabilizer and mix them to obtain component C, add component C to slurry B, and mix and stir to obtain slurry B1; (4) Use a two-component equal-flow-rate grouting machine to mix slurry A and slurry B1 at an equal flow rate and then grout to obtain a high-strength antibacterial flexible waterproof material.

[0016] Optionally, the weight ratio of component A to water is 1:1, and the weight ratio of component B to water is 1:1.

[0017] The high-strength antibacterial flexible waterproof material and its preparation method provided by the present application realize the preparation of the flexible waterproof material. Compared with the prior art, it has the following beneficial effects: (1)The flexible waterproof material provided by this application includes component A, component B, and component C with a weight ratio of 1:1:(0.04 - 0.4). The polymer material in component A endows the flexible waterproof material with good flexibility and ductility through its long-chain molecular structure. The reinforcing filler significantly improves the tensile strength, tear resistance, and elastic modulus of the flexible waterproof material through its interaction with the polymer material. The flexibility-enhancing and reinforcing filler significantly improves the flexibility, mechanical properties, and durability of the flexible waterproof material. The rheology regulator in component B enables the flexible waterproof material to exhibit good fluidity during the construction stage, so that the flexible waterproof material can penetrate into the interior of the substrate during construction, fill engineering cracks or cavities, block the passage of water molecules, and achieve the waterproof purpose while filling the cracks. The curing agent in component C initiates a chemical reaction of the polymer material, transforms from a liquid state to an elastic solid network structure, and in-situ cures the formed three-dimensional crosslinked network, endowing the flexible waterproof material with waterproof characteristics of high elasticity, weather resistance, and adhesiveness. The addition of the first antibacterial agent and the second antibacterial agent enables the flexible waterproof material to inhibit the growth of microorganisms, prevent material deterioration, and improve the stability of the flexible waterproof material. Through the addition of the above components, the flexible waterproof material provided by this application not only has good mechanical strength and mechanical properties, but also has excellent antibacterial properties.

[0018] (2)When the flexible waterproof material provided by this application is used, component A and component B1 are first mixed to obtain a mixed slurry with a lower viscosity. This mixed slurry has good fluidity and permeability, and can penetrate into tiny cracks in the building. After evaporation and curing with water, it forms a consolidated body with the building body, thereby avoiding water seepage caused by the inability of the waterproof material to fully penetrate into the cracks due to the high viscosity of the grout, helping the flexible waterproof material to fully exert its water-blocking and waterproofing performance, and also playing a role in strengthening and stabilizing the building substrate.

[0019] (3)Components A, B, and C of the flexible waterproof material are all powders before use. During the construction process, after mixing each component with water to form a slurry and then grouting, this design of powder materials not only makes the flexible waterproof material more stable in storage and transportation compared with the liquid storage and transportation in the prior art, but also combines with the addition of antibacterial agents to avoid the deterioration of the flexible waterproof material affected by the bacteria in the environment. At the same time, the powder materials are more convenient for storage and transportation. And placing slurry A and slurry B1 in a two-component equal-flow grouting machine respectively, and then mixing them at an equal flow rate, helps the construction personnel to take materials according to the amount required by the actual working conditions. Compared with directly mixing components A, B, and C with water and using them in the prior art, this two-component equal-flow grouting avoids the curing of the flexible waterproof material in the grouting machine and blocking the equipment during the construction process, making the use process more convenient and simple.

[0020] (4) Sodium tartrate and 2,4-dihydroxybenzamide are also added to component A of the flexible waterproof material provided in this application. During the curing process, a large number of active groups, namely hydroxyl and carboxyl groups, are contained in sodium tartrate. The presence of hydroxyl and carboxyl groups can further improve the curing reaction efficiency. At the same time, the addition of 2,4-dihydroxybenzamide can be evenly distributed inside the flexible waterproof material. The amide bond and hydroxyl group it contains can interact with the polymer material, enhancing the stability of the three-dimensional crosslinked network formed during the curing process, avoiding large voids inside the flexible waterproof material after rapid curing, and the presence of the benzene ring in 2,4-dihydroxybenzamide can further strengthen the mechanical properties of the flexible waterproof material.

[0021] (5) The flexible waterproof material provided in this application can absorb water and swell, has good self-adaptability in water, good environmental safety, and is non-toxic. It has no impact on the survival of organisms, so the material system can also be used in projects such as reservoir restoration. At the same time, it also has the characteristics of a short curing time (5 - 10 minutes), high mechanical strength, and convenient on-site construction. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is the experimental diagram of the elasticity and tensile strength of the formed flexible waterproof material provided in Embodiment 5 of this application; Figure 1 (a) shows the state of the flexible waterproof material without being stretched, Figure 1 (b) shows the state of the flexible waterproof material being stretched, Figure 1 (c) shows the state of the flexible waterproof material being wound around a finger; Figure 2 It is the experimental diagram of the rapid anchoring of the formed flexible waterproof material provided in Embodiment 5 of this application to loose soil; Figure 2 (a) shows the loose soil, Figure 2 (b) shows the state of the flexible waterproof material being sprayed onto the loose soil, Figure 2 (c) shows the state of the flexible waterproof material after curing in the loose soil. Detailed Embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts also belong to the scope of protection of this application.

[0025] On the one hand, this application provides a high-strength antibacterial flexible waterproof material, which includes component A, component B, and component C with a weight ratio of 1:1:(0.04 - 0.4); By weight, the raw materials of component A include: 5 - 10 parts by weight of a polymer material, 1 - 100 parts by weight of a reinforcing filler, 0.01 - 1 part by weight of a flexibility-enhancing and reinforcing filler, 0.01 - 1 part by weight of a first antibacterial agent, and 1 - 50 parts by weight of a reaction catalyst; By weight, the raw materials of component B include: 0.1 - 10 parts by weight of a rheology regulator, 0.1 - 100 parts by weight of a reinforcing and whitening agent, and 0.01 - 1 part by weight of a second antibacterial agent; By weight, the raw materials of component C include: 0.01 - 1 part by weight of a curing agent and 0.01 - 1 part by weight of a stabilizer.

[0026] Specifically, the polymer material endows the flexible waterproof material with good flexibility and ductility through its long-chain molecular structure. This characteristic enables the flexible waterproof material to adapt to the deformation of the substrate during work (such as temperature changes, structural settlement, etc.), and at the same time makes the flexible waterproof material have good tensile strength and flexibility. After the polymer material is cured, it can also form a physical barrier through the close arrangement between molecules, forming a seamless continuous film layer, blocking the water seepage path of capillary pores and cracks, and preventing the intrusion of liquid water. The addition of the polymer material makes the flexible waterproof material have excellent ultraviolet resistance, and it is not easy to age and crack when exposed to the outdoors for a long time, making the flexible waterproof material have better flexibility, tensile strength, and waterproofness as a material for building defect repair.

[0027] The raw materials of component A also include a reinforcing filler. Through the interaction with the polymer material, the reinforcing filler can significantly improve the tensile strength, tear resistance, and elastic modulus of the flexible waterproof material. The reinforcing filler can also improve the durability and stability of the flexible waterproof material, and enhance the density and construction adaptability of the material through physical filling and chemical bonding.

[0028] The flexibility-enhancing and reinforcing filler can significantly improve the flexibility, mechanical properties, and durability of the flexible waterproof material through multiple mechanisms such as physical filling, intermolecular forces, or chemical bonding. It can also endow the flexible waterproof material with high elasticity and deformation adaptability by adjusting the flexibility of the molecular chain.

[0029] The rheology modifier in Component B adjusts the viscosity and thixotropy of the flexible waterproof material, enabling the flexible waterproof material to exhibit good fluidity during the construction stage. This allows the flexible waterproof material to penetrate into the interior of the substrate during construction, fill engineering cracks or cavities, block the passage of water molecules, achieve the waterproof purpose, and fill the cracks at the same time. The reinforcing and brightening agent can combine with the chains of the polymer material to form a dense network structure, significantly enhancing the tensile strength, tear resistance, and elastic modulus of the flexible waterproof material. At the same time, it improves the whiteness and visual performance of the flexible waterproof material, making the material present a cleaner appearance. It can also reduce the photo-oxidative degradation of the polymer material, indirectly extending the service life of the waterproof material. Through the synergistic effect of reinforcing mechanical properties and brightening, the comprehensive performance of the flexible waterproof material is optimized.

[0030] The addition of the first antibacterial agent and the second antibacterial agent endows the flexible waterproof material with good antibacterial properties. During transportation and storage, it can inhibit the growth of microorganisms, prevent material deterioration, avoid the growth of bacteria in the flexible waterproof material in the air, and improve the storage and use stability of the flexible material. During use, the presence of the first antibacterial agent and the second antibacterial agent can achieve good antibacterial effects on the material, prevent the growth of bacteria in the environment on the flexible waterproof material, reduce the spread of pathogenic microorganisms in the environment, improve the material durability and environmental adaptability, and at the same time ensure environmental hygiene and human health. This enables the flexible waterproof material to be applicable to places with high hygiene requirements such as hospitals and kitchens.

[0031] The first antibacterial agent and the second antibacterial agent can also act synergistically with other components to endow the flexible waterproof material with multifunctionality. For example, when synergizing with the rheology modifier, it optimizes the construction performance of the flexible waterproof material, and has both penetration and antibacterial effects during construction.

[0032] The curing agent initiates chemical reactions of the polymer material (generating free radicals through addition, polymerization, etc.), transforms from a liquid state to an elastic solid network structure, and in-situ cures the formed three-dimensional crosslinked network, endowing the flexible waterproof material with waterproof characteristics of high elasticity, weather resistance, and adhesiveness. The chemical crosslinked network can prevent the penetration of water molecules, while the physical crosslinked system may swell in water. Therefore, this material combines the comprehensive advantages of chemical and physical crosslinked systems. At the same time, the curing agent can enhance the intermolecular adhesion force, making the flexible waterproof material harder and more durable. Excessive curing agent will cause the flexible waterproof material to become brittle, while insufficient curing agent will affect the elasticity of the flexible waterproof material.

[0033] The stabilizer is a key component that can ensure the performance stability and durability of the flexible waterproof material. Its main functions include preventing the material from degrading or failing under environmental factors such as temperature changes, ultraviolet radiation, and chemical corrosion, which is beneficial to extending the service life of the flexible waterproof material.

[0034] Among them, the curing agent includes one or more of phosphoric acid, p-toluenesulfonic acid, HDI, formaldehyde, acetaldehyde, glyoxal, glutaraldehyde, furfural, ammonium sulfate, and sodium bisulfate. The stabilizer includes one or more of dodecanol, tridecanol, tetradecanol, ethylene glycol monobutyl ether, methanol, ethanol, BHT, BHA, EDTA, and SDS.

[0035] The addition of the reaction catalyst can promote the action of the curing agent, contribute to the formation of a three-dimensional crosslinked network, thereby shortening the construction time and improving the construction efficiency.

[0036] The flexible waterproof material provided by this application includes components A, B, and C with a weight ratio of 1:1:(0.04 - 0.4). The polymer material in component A endows the flexible waterproof material with good flexibility and ductility through its long-chain molecular structure. This property enables the flexible waterproof material to adapt to the deformation of the substrate during work. The reinforcing filler can significantly improve the tensile strength, tear resistance, and elastic modulus of the flexible waterproof material through its interaction with the polymer material. The flexibility-enhancing and reinforcing filler can significantly improve the flexibility, mechanical properties, and durability of the flexible waterproof material through multiple mechanisms such as physical filling, intermolecular forces, or chemical bonding. The rheology modifier in component B adjusts the viscosity and thixotropy of the flexible waterproof material, making the flexible waterproof material exhibit good fluidity during the construction stage. In this way, the flexible waterproof material can penetrate into the interior of the substrate during construction, fill engineering cracks or cavities, block the passage of water molecules, and achieve the waterproof purpose while filling the cracks. The curing agent in component C initiates a chemical reaction of the polymer material, transforms from a liquid state to an elastic solid network structure, and the formed three-dimensional crosslinked network is in-situ cured, endowing the flexible waterproof material with waterproof properties of high elasticity, weather resistance, and adhesiveness. The addition of the first antibacterial agent and the second antibacterial agent enables the flexible waterproof material to inhibit the growth of microorganisms, prevent material deterioration, and improve the stability of the flexible waterproof material. Through the addition of the above components, the flexible waterproof material provided by this application not only has good mechanical strength and mechanical properties but also has excellent antibacterial properties.

[0037] Optionally, the polymer material includes one or more of PVP, PVB, PVA, MCC, and HPMC.

[0038] Specifically, PVP (polyvinylpyrrolidone), a water-soluble polymer formed by the polymerization of N-vinylpyrrolidone, has a molecular chain containing polar pyrrolidone groups, with characteristics of high viscosity, non-toxic and environmentally friendly, and good complexing ability. PVB (polyvinyl butyral) has good flexibility and adhesiveness. PVA (polyvinyl alcohol) has excellent film-forming properties, MCC (microcrystalline cellulose), HPMC (hydroxypropyl methyl cellulose). After these polymer materials are cured, they can form a physical barrier through the close arrangement between molecules, forming a seamless continuous film layer, blocking the seepage path of capillary pores and cracks, preventing the intrusion of liquid water, and having good water-blocking and waterproof properties.

[0039] Optionally, the reinforcing filler includes one or more of calcium carbonate, titanium dioxide, talc powder, calcium sulfate, calcium chloride, bentonite; The particle size of the reinforcing filler is 1000 - 1200 mesh.

[0040] Specifically, the reinforcing filler has a large specific surface area, can be more evenly dispersed in the matrix, form a dense network structure, and can further improve the tensile strength, so that the mechanical properties of the flexible waterproof material are further improved.

[0041] Optionally, the flexibility-enhancing and reinforcing filler includes one or more of silicone rubber powder, calcium carbonate, nano-silica, mica powder, talc powder, montmorillonite.

[0042] Specifically, the flexible filler can adjust the viscosity and fluidity of the flexible waterproof material, making it easy to fill complex gaps during construction and flow to fill cracks under the drive of water pressure to achieve dynamic sealing.

[0043] Optionally, the first antibacterial agent and the second antibacterial agent have the same composition, and both the first antibacterial agent and the second antibacterial agent include one or more of potassium phosphate, titanium dioxide, calcium chloride, zinc oxide, quaternary ammonium salts.

[0044] Specifically, the antibacterial agent inhibits the reproduction of bacteria, molds, etc. by destroying the cell structure or metabolic function of microorganisms, and avoids them from decomposing the organic components (such as polymers) in the material, thereby preventing the performance degradation of the flexible waterproof material caused by microbial erosion.

[0045] For example, nano-titanium dioxide generates reactive oxygen species (ROS) under light, oxidizes and decomposes the microbial structure, and at the same time has a self-cleaning function. Quaternary ammonium salt antibacterial agents adsorb on the surface of microorganisms through cationic groups, interfere with their metabolic processes, and achieve broad-spectrum antibacterial.

[0046] Among them, the quaternary ammonium salt antibacterial agents include one or more of single-chain quaternary ammonium salts, double-chain quaternary ammonium salts, compound quaternary ammonium salts, and triple-chain quaternary ammonium salts. The single-chain quaternary ammonium salts are selected from benzalkonium chloride (chlorine type) and / or benzalkonium bromide (bromine type). The double-chain quaternary ammonium salts are selected from didecyldimethylammonium chloride (bromide) and / or dioctyldimethylammonium chloride (bromide). The compound quaternary ammonium salts are selected from the compound of hexamethylenetetramine and benzalkonium bromide (this compound quaternary ammonium salt is prior art and will not be elaborated in this application). The triple-chain quaternary ammonium salt (T-QAC) is selected from benzyl alkyl methyl quaternary ammonium peroxide and / or methyl sulfate alkyl methyl quaternary ammonium salt.

[0047] Optionally, the reaction catalyst includes one or more of boric acid, metasilicic acid, phosphoric acid, citric acid, oxalic acid, and tartaric acid.

[0048] Optionally, the rheology modifier includes one or more of PDMS, BYK-3900P, PE, PTFE, nano-silica, modified bentonite, modified kaolin, organically modified montmorillonite, and diatomite. PDMS is polydimethylsiloxane, BYK-3900P is purchased from BYK-Chemie GmbH in Germany, PE is polyethylene, and PTFE is polytetrafluoroethylene.

[0049] Optionally, the reinforcing and whitening agent includes one or more of calcium carbonate, titanium dioxide, talc powder, calcium sulfate, calcium chloride, bentonite, and wollastonite; The particle size of the reinforcing and whitening agent is 800-900 mesh.

[0050] Specifically, compared with the reinforcing filler, the reinforcing and whitening agent can not only bind to the chains of the polymer material to further improve the mechanical properties of the flexible waterproof material (such as tensile strength, tear resistance, and elastic modulus), but also improve the whiteness and visual performance of the flexible waterproof material. The particle size of the reinforcing and whitening agent is 800-900 mesh, and the particle size of the reinforcing filler is 1000-1200 mesh. The different particle sizes used help smaller particles to fully fill the inside of the flexible waterproof material and the matrix to be filled during use, further improving the water-blocking and waterproof performance of the flexible waterproof material. At the same time, regulating the particle size of the raw materials helps the uniform dispersion of the flexible waterproof material and the efficient progress of the curing reaction, thereby improving the mechanical properties and water-blocking and waterproof performance of the flexible waterproof material itself.

[0051] On the other hand, the present application provides a preparation method of a high-strength antibacterial flexible waterproof material. This preparation method is used to prepare the above flexible waterproof material, and this preparation method includes the following steps: (1) By weight, take the polymer material, reinforcing filler, flexibility-enhancing and reinforcing filler, first antibacterial agent, and reaction catalyst and mix them to obtain component A, and mix component A with water and stir to obtain slurry A; (2) By weight, take a rheology modifier, a reinforcing and brightening agent, and a second antibacterial agent and mix them to obtain Component B. Then mix Component B with water and stir to obtain Slurry B. (3) By weight, take a curing agent and a stabilizer and mix them to obtain Component C. Add Component C to Slurry B and mix and stir to obtain Slurry B1. (4) Use a two-component equal-flow grouting machine to mix Slurry A and Slurry B1 at equal flow rates, then grout and cure to obtain a high-strength antibacterial flexible waterproof material.

[0052] Specifically, during construction, take the raw materials in Component A and mix them, and mix Component A with water to obtain Slurry A. At the same time, take the raw materials in Component B and mix them, and mix Component B with water and stir to obtain Slurry B. Add Component C to Slurry B and mix and stir to obtain Slurry B1. When grouting, use a two-component equal-flow grouting machine to mix Slurry A and Slurry B1 at equal flow rates, and then fill the mixed slurry into engineering cracks or cavities through the grouting machine to block the passage of water molecules, achieving the waterproof purpose and filling the cracks at the same time.

[0053] At the same time, when the flexible waterproof material provided in this application is in use, the viscosity of Component A is 7500 - 8000 mPa·s, and the viscosity of Component B1 is 180 - 198.5 mPa·s. First mix Component A and Component B1 to obtain a mixed slurry with a lower viscosity. This mixed slurry has better fluidity and better permeability, and can penetrate into tiny cracks in the building. After evaporation and curing with water, it forms a consolidated body with the building body, thus avoiding water seepage caused by the inability of the waterproof material with a large grouting viscosity to fully penetrate into the cracks, helping the flexible waterproof material to fully exert its water-blocking and waterproof performance, and also being able to play a role in strengthening and stabilizing the building matrix.

[0054] In this application, Components A, B, and C of the flexible waterproof material are all powders before use. During the construction process, the components are mixed with water to form slurries for grouting. Such a powder design, compared with the liquid state in the prior art, not only makes the flexible waterproof material more stable in storage and transportation, but also combines the addition of antibacterial agents to avoid deterioration of the flexible waterproof material due to the influence of bacteria in the environment. At the same time, the powder is more convenient for storage and transportation. And placing Slurry A and Slurry B1 in a two-component equal-flow grouting machine respectively and then mixing them at equal flow rates helps construction workers to take materials according to the amount required by the actual working conditions. Compared with directly mixing Components A, B, and C with water and using them in the prior art, such two-component equal-flow grouting avoids the curing of the flexible waterproof material in the grouting machine during the construction process and blocking the equipment, making the use process more convenient and simple.

[0055] Furthermore, 0.03 - 0.2 parts by weight of sodium tartrate and 0.05 - 0.2 parts by weight of 2,4 - dihydroxybenzamide are added to the component A of the flexible waterproof material provided by the present application. During the curing process, a large number of active groups, namely hydroxyl and carboxyl groups, exist in sodium tartrate. The presence of hydroxyl and carboxyl groups can further improve the curing reaction efficiency. At the same time, the addition of 2,4 - dihydroxybenzamide can be evenly distributed inside the flexible waterproof material. The amide bond and hydroxyl group it contains can interact with the polymer material, enhancing the stability of the three - dimensional cross - linked network formed during the curing process, avoiding large voids inside the flexible waterproof material after rapid curing. Moreover, the presence of the benzene ring in 2,4 - dihydroxybenzamide can further enhance the mechanical properties of the flexible waterproof material.

[0056] Through the above - mentioned solution, the present application realizes the preparation of a flexible waterproof material with high strength and antibacterial properties. By mixing component A with water to obtain slurry A, mixing component B with water to obtain slurry B, adding component C to slurry B to obtain slurry B1, and finally placing slurry A and slurry B1 into a two - component equal - flow grouting machine for equal - flow mixing, and filling the mixed slurry into engineering cracks or cavities to block the passage of water molecules, filling the cracks while achieving the waterproof purpose. Such two - component equal - flow grouting avoids the curing of the flexible waterproof material in the grouting machine during construction and blocking of the equipment, making the use process more convenient and simple.

[0057] Optionally, the weight ratio of component A to water is 1:1, and the weight ratio of component B to water is 1:1.

[0058] The technical solution of the present application will be described in detail with specific examples below.

[0059] Example 1 A high - strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: (1) By weight, take 5 parts by weight of polymer material (PVP), 1 part by weight of reinforcing filler (calcium carbonate), 0.01 part by weight of flexibility - enhancing and reinforcing filler (silicone rubber powder, particle size 20 - 30um), 0.01 part by weight of the first antibacterial agent (potassium phosphate), and a certain amount of reaction catalyst (boric acid) and mix them to obtain component A. Then mix component A with water in an equal weight ratio and stir to obtain slurry A; (2) By weight, take 0.1 part by weight of rheology regulator (BYK - 3900P), 0.1 part by weight of reinforcing and whitening agent (calcium carbonate), 0.01 part by weight of the second antibacterial agent (potassium phosphate) and mix them to obtain component B. Then mix component B with water in an equal weight ratio and stir to obtain slurry B; (3) Take 0.01 part by weight of a curing agent (phosphoric acid) and 0.01 part by weight of a stabilizer (tridecanol), mix them to obtain Component C, and add Component C to Slurry B, then mix and stir to obtain Slurry B1; (4) Use a two-component equal-flow grouting machine to mix Slurry A and Slurry B1 at equal flow rates to obtain a mixed slurry, and then grout to obtain a high-strength antibacterial flexible waterproof material.

[0060] Among them, the weight ratio of Component A, Component B, and Component C is 1:1:0.04.

[0061] Example 2 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: (1) Take 7 parts by weight of a polymer material (PVA), 50 parts by weight of a reinforcing filler (bentonite), 0.5 part by weight of a flexibility-enhancing and reinforcing filler (nano-silica, particle size 20 - 30um), 0.5 part by weight of a first antibacterial agent (zinc oxide), and 25 parts by weight of a reaction catalyst (oxalic acid), mix them to obtain Component A, and mix Component A with water at an equal weight ratio and stir to obtain Slurry A; (2) Take 5 parts by weight of a rheology modifier (PDMS), 50 parts by weight of a reinforcing and whitening agent (calcium chloride), and 0.5 part by weight of a second antibacterial agent (zinc oxide), mix them to obtain Component B, and mix Component B with water at an equal weight ratio and stir to obtain Slurry B; (3) Take 0.5 part by weight of a curing agent (p-toluenesulfonic acid) and 0.5 part by weight of a stabilizer (ethylene glycol monobutyl ether), mix them to obtain Component C, add Component C to Slurry B, and mix and stir to obtain Slurry B1; (4) Use a two-component equal-flow grouting machine to mix Slurry A and Slurry B1 at equal flow rates to obtain a mixed slurry, and then grout to obtain a high-strength antibacterial flexible waterproof material.

[0062] Among them, the weight ratio of Component A, Component B, and Component C is 1:1:0.25.

[0063] Example 3 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: (1) Take 10 parts by weight of a polymer material (HPMC), 100 parts by weight of a reinforcing filler (titanium dioxide), 1 part by weight of a flexibility-enhancing and reinforcing filler (talc powder, particle size 20 - 30um), 1 part by weight of a first antibacterial agent (titanium dioxide), and 50 parts by weight of a reaction catalyst (citric acid), mix them to obtain Component A, and mix Component A with water at an equal weight ratio and stir to obtain Slurry A; (2) Take 10 parts by weight of a rheology modifier (modified kaolin), 100 parts by weight of a reinforcing and whitening agent (calcium sulfate), and 1 part by weight of a second antibacterial agent (titanium dioxide), mix them to obtain Component B, and mix Component B with water in an equal weight ratio and stir to obtain Slurry B; (3) Take 1 part by weight of a curing agent and 1 part by weight of a stabilizer, mix them to obtain Component C, add Component C to Slurry B, and mix and stir to obtain Slurry B1; (4) Use a two-component equal-flow grouting machine to mix Slurry A and Slurry B1 at an equal flow rate to obtain a mixed slurry, and perform grouting to obtain a high-strength antibacterial flexible waterproof material.

[0064] Among them, the weight ratio of Component A, Component B, and Component C is 1:1:0.4.

[0065] Comparative Example 1 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: The difference from Example 2 is: (3) Take 0.009 parts by weight of a curing agent and 0.5 parts by weight of a stabilizer, mix them to obtain Component C, add Component C to Slurry B, and mix and stir to obtain Slurry B1.

[0066] Comparative Example 2 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: The difference from Example 2 is: (3) Take 1.1 parts by weight of a curing agent and 0.5 parts by weight of a stabilizer, mix them to obtain Component C, add Component C to Slurry B, and mix and stir to obtain Slurry B1.

[0067] Comparative Example 3 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: The difference from Example 2 is: (4) Use a two-component equal-flow grouting machine to mix Slurry A and Slurry B1 at an equal flow rate to obtain a mixed slurry, and perform grouting to obtain a high-strength antibacterial flexible waterproof material.

[0068] Among them, the weight ratio of Component A, Component B, and Component C is 1:1:0.03.

[0069] Comparative Example 4 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: The difference from Example 2 is: (4)Adopt a two-component equal-flow-rate grouting machine to mix slurry A and slurry B1 at equal flow rates to obtain a mixed slurry, and then grout to obtain a high-strength antibacterial flexible waterproof material.

[0070] Among them, the weight ratio of component A, component B, and component C is 1:1:0.41.

[0071] Experimental Example 1 Detect the mechanical properties (tensile strength, elongation at break, compressive strength) of the flexible waterproof materials provided in Examples 1 to 3 and Comparative Examples 1 to 4. Each experiment was carried out at least three parallel experiments, and the average value was taken to obtain the structure as shown in Table 1.

[0072] Among them, the flexible waterproof materials provided in Examples 1 to 3 and Comparative Examples 1 to 4 were respectively soaked in a saturated sodium chloride solution at 20 - 30 °C for 24 h, then rinsed with water, and their tensile strength was detected.

[0073] Reference standard for mechanical property testing: Q / FS001 - 2024 "High-elasticity water-based flexible waterproof material" As shown in Table 1 As can be seen from Table 1, the flexible waterproof material provided by this application has excellent mechanical properties. The polymer material provides good tensile strength and flexibility for the flexible waterproof material. At the same time, it synergistically acts with other raw materials to further improve the mechanical properties of the flexible material, making the flexible waterproof material have good mechanical strength, providing a good mechanical basis for the water-blocking and waterproofing of the flexible waterproof material. Comparing the materials obtained in Example 2 with Comparative Example 1 and Comparative Example 2, it is found that the addition amount of the curing agent will affect the mechanical properties of the flexible waterproof material. The curing agent can enhance the intermolecular adhesion force, making the flexible waterproof material harder and more durable. Excessive curing agent will cause the flexible waterproof material to become brittle, while insufficient curing agent will affect the elasticity of the flexible waterproof material, thereby affecting the mechanical strength of the flexible waterproof material. At the same time, the flexible waterproof material provided by this application also has excellent salt resistance, enabling the flexible waterproof material to be applied in more severe environments.

[0074] Experimental Example 2 Test the water impermeability of the flexible waterproof materials provided in Examples 1 to 3 through a water impermeability tester, and at the same time detect the solubility with reference to Q / FS001 - 2024. Each experiment was carried out at least three parallel experiments, and the results are shown in Table 2.

[0075] Table 2 Water impermeability (0.2 MPa, 15 min) Solubility Example 1 No water seepage Insoluble in water Example 2 No water seepage Insoluble in water Example 3 No water seepage Insoluble in water Experimental Example 3 The detection of the volatile organic compound content of the flexible waterproof materials provided in Examples 1 to 3 and Comparative Examples 1 to 4 shows that no volatile organic compounds were detected in the flexible waterproof materials provided in Examples 1 to 3 and Comparative Examples 1 to 4.

[0076] Reference standard for the detection of volatile organic compound content: JC / T 1066-2008 "Limit of harmful substances in building waterproof coatings".

[0077] Example 4 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: The difference from Example 2 is as follows: (1) By weight, take 7 parts by weight of polymer material, 50 parts by weight of reinforcing filler, 0.5 part by weight of flexibilizing and reinforcing filler, 0.5 part by weight of the first antibacterial agent, 25 parts by weight of reaction catalyst, 0.03 part by weight of sodium tartrate, and 0.05 part by weight of 2,4-dihydroxybenzamide, mix them to obtain Component A, and mix Component A with water in an equal weight ratio and stir to obtain Slurry A.

[0078] Example 5 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: The difference from Example 2 is as follows: (1) By weight, take 7 parts by weight of polymer material, 50 parts by weight of reinforcing filler, 0.5 part by weight of flexibilizing and reinforcing filler, 0.5 part by weight of the first antibacterial agent, 25 parts by weight of reaction catalyst, 0.12 part by weight of sodium tartrate, and 0.13 part by weight of 2,4-dihydroxybenzamide, mix them to obtain Component A, and mix Component A with water in an equal weight ratio and stir to obtain Slurry A.

[0079] Example 6 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: The difference from Example 2 is as follows: (1) By weight, take 7 parts by weight of polymer material, 50 parts by weight of reinforcing filler, 0.5 part by weight of flexibilizing and reinforcing filler, 0.5 part by weight of the first antibacterial agent, 25 parts by weight of reaction catalyst, 0.2 part by weight of sodium tartrate, and 0.2 part by weight of 2,4-dihydroxybenzamide, mix them to obtain Component A, and mix Component A with water in an equal weight ratio and stir to obtain Slurry A.

[0080] Comparative Example 5 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: The difference from Example 5 is as follows: (1) By weight, take 7 parts by weight of polymer material, 50 parts by weight of reinforcing filler, 0.5 part by weight of softening and reinforcing filler, 0.5 part by weight of the first antibacterial agent, 25 parts by weight of reaction catalyst, 0.02 part by weight of sodium tartrate, and 0.13 part by weight of 2,4-dihydroxybenzamide, mix them to obtain Component A, and mix Component A with water in an equal weight ratio and stir to obtain Slurry A.

[0081] Comparative Example 6 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: The difference from Example 5 is that: (1) By weight, take 7 parts by weight of polymer material, 50 parts by weight of reinforcing filler, 0.5 part by weight of softening and reinforcing filler, 0.5 part by weight of the first antibacterial agent, 25 parts by weight of reaction catalyst, 0.12 part by weight of sodium tartrate, and 0.04 part by weight of 2,4-dihydroxybenzamide, mix them to obtain Component A, and mix Component A with water in an equal weight ratio and stir to obtain Slurry A.

[0082] Comparative Example 7 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: The difference from Example 5 is that: (1) By weight, take 7 parts by weight of polymer material, 50 parts by weight of reinforcing filler, 0.5 part by weight of softening and reinforcing filler, 0.5 part by weight of the first antibacterial agent, 25 parts by weight of reaction catalyst, 0.13 part by weight of 2,4-dihydroxybenzamide, mix them to obtain Component A, and mix Component A with water in an equal weight ratio and stir to obtain Slurry A.

[0083] Comparative Example 8 A high-strength antibacterial flexible waterproof material and its preparation method. The preparation method includes the following steps: The difference from Example 5 is that: (1) By weight, take 7 parts by weight of polymer material, 50 parts by weight of reinforcing filler, 0.5 part by weight of softening and reinforcing filler, 0.5 part by weight of the first antibacterial agent, 25 parts by weight of reaction catalyst, 0.12 part by weight of sodium tartrate, mix them to obtain Component A, and mix Component A with water in an equal weight ratio and stir to obtain Slurry A.

[0084] Experimental Example 4 Detect the mechanical properties (tensile strength, elongation at break, compressive strength) of the flexible waterproof materials provided by Examples 4 to 6 and Comparative Examples 5 to 8. Each experiment is carried out at least three parallel experiments, and the average value is taken to obtain the results shown in Table 3.

[0085] Reference standard for mechanical property testing: Q / FS001-2024 "High-elasticity water-based flexible waterproof material" Table 3 As can be seen from Table 3, by adding sodium tartrate and 2,4-dihydroxybenzamide in special proportions, the mechanical properties of the flexible waterproof material of the present application can be further improved. At the same time, from Comparative Example 7 and Comparative Example 8, it can be seen that when sodium tartrate and 2,4-dihydroxybenzamide are added simultaneously, under their synergistic action, the mechanical properties of the flexible waterproof material are jointly improved. The hydroxyl and carboxyl groups in sodium tartrate can further improve the curing reaction efficiency. At the same time, the amide bond and hydroxyl group in 2,4-dihydroxybenzamide can interact with the polymer material, making the three-dimensional crosslinked network formed during the curing process more stable, avoiding large voids inside the flexible waterproof material after rapid curing, and the presence of the benzene ring in 2,4-dihydroxybenzamide can further enhance the mechanical properties of the flexible waterproof material.

[0086] Experimental Example 5 By manually detecting the elasticity and tensile strength of the formed flexible waterproof material provided in Example 5, the results are as Figure 1 shown. It is found that the flexible waterproof material provided by the present application has good elasticity and tensile strength. The flexible waterproof material provided by the present application has elasticity like rubber. The high elasticity and large tensile strength of the flexible waterproof material enable it to resist greater water pressure without water seepage, and at the same time avoid water leakage caused by the deformation during use that cannot be restored in time.

[0087] Experimental Example 6 The antibacterial properties of the flexible waterproof materials provided in Examples 1 to 6 were tested. Reference standard: ASTM G21-2015 "Standard Test Method for Mold (Fungus Resistance) of Synthetic Polymer Materials".

[0088] Test results: The antibacterial grades of the flexible waterproof materials provided in Examples 1 to 6 are all Grade 0, that is, no visible mold growth (no discovery even under 50-fold microscope magnification). It shows that the flexible waterproof material provided by the present application has excellent antibacterial properties, can inhibit the growth of microorganisms, prevent material deterioration, avoid the growth of bacteria on the flexible waterproof material in the air, and improve the storage and use stability of the flexible material.

[0089] Experimental Example 7 Loose soil was taken in a beaker, and the mixed slurry provided in Example 5 of the present application was sprayed from top to bottom (spraying speed: 100 mL / 20 - 30 min) into the beaker, and the curing time was 5 - 10 min, to obtain the results as Figure 2 shown.

[0090] ObserveFigure 2 It can be seen that the flexible waterproof material provided by the present application can also quickly anchor loose soil, has good adhesiveness to soil, sand and gravel, can pass through tiny pores, and has a good effect on repairing water leakage. Utilizing this property, the flexible waterproof material provided by the present application can also be used for anchoring loose geological formations, and can, to a certain extent, inhibit or delay the occurrence of natural disasters such as landslides.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements 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 application.

Claims

1. A high-strength antibacterial flexible waterproof material, characterized in that: include: The weight ratio is 1: 1: (0.04-0.4) of component A, component B and component C; In parts by weight, the raw materials of component A include: 5-10 parts by weight of polymer material, 1-100 parts by weight of reinforcing filler, 0.01-1 parts by weight of softening reinforcing filler, 0.01-1 parts by weight of first antibacterial agent, and 1-50 parts by weight of reaction catalyst; In parts by weight, the raw materials of component B include: 0.1-10 parts by weight of rheology regulator, 0.1-100 parts by weight of reinforcing whitening agent, and 0.01-1 parts by weight of second antibacterial agent; In parts by weight, the raw materials of component C include: 0.01-1 parts by weight of a curing agent and 0.01-1 parts by weight of a stabilizer.

2. The high-strength antibacterial flexible waterproof material according to claim 1, characterized in that: The polymer material includes one or more of PVP, PVB, PVA, MCC and HPMC.

3. The high-strength antibacterial flexible waterproof material according to claim 1, characterized in that: The reinforcing filler includes one or more of calcium carbonate, titanium dioxide, talcum powder, calcium sulfate, calcium chloride, and bentonite; The particle size of the reinforcing filler is 1000-1200 meshes.

4. The high-strength antibacterial flexible waterproof material according to claim 1, characterized in that: The flexible and reinforcing filler includes one or more of silicone rubber powder, calcium carbonate, nano silicon dioxide, mica powder, talcum powder, and montmorillonite.

5. The high-strength antibacterial flexible waterproof material according to claim 1, characterized in that: The first antibacterial agent and the second antibacterial agent have the same ingredients, and both the first antibacterial agent and the second antibacterial agent include one or more of potassium phosphate, titanium dioxide, calcium chloride, zinc oxide, and quaternary ammonium salt.

6. The high-strength antibacterial flexible waterproof material according to claim 1, characterized in that: The reaction catalyst includes one or more of boric acid, metasilicic acid, phosphoric acid, citric acid, oxalic acid, and tartaric acid.

7. The high-strength antibacterial flexible waterproof material according to claim 1, characterized in that: The rheology regulator includes one or more of PDMS, BYK-3900P, PE, PTFE, nano-silicon dioxide, modified bentonite, modified kaolin, organic modified montmorillonite and diatomaceous earth.

8. The high-strength antibacterial flexible waterproof material according to claim 1, characterized in that: The reinforcing whitening agent includes one or more of calcium carbonate, titanium dioxide, talcum powder, calcium sulfate, calcium chloride, bentonite, and wollastonite; The particle size of the reinforcing whitening agent is 1000-1200 meshes.

9. A method for preparing a high-strength antibacterial flexible waterproof material, characterized in that: The preparation method is used to prepare the flexible waterproof material according to any one of claims 1 to 8, and the preparation method comprises the following steps: (1) Mixing the polymer material, the reinforcing filler, the softening reinforcing filler, the first antibacterial agent, and the reaction catalyst in parts by weight to obtain component A, and mixing component A with water to obtain slurry A; (2) mixing the rheology regulator, the reinforcing whitening agent, and the second antibacterial agent in parts by weight to obtain the component B, and mixing the component B with water to obtain slurry B; (3) Mix the curing agent and the stabilizer by weight to obtain the component C, add the component C to the slurry B, mix and stir, and obtain slurry B1; (4) A two-component equal-flow rate grouting machine is used to mix the slurry A and the slurry B1 at equal flow rates, and then grouting is performed to obtain the high-strength antibacterial flexible waterproof material.

10. The method for preparing a high-strength antibacterial flexible waterproof material according to claim 9, characterized in that: The weight ratio of the component A to water is 1:1, and the weight ratio of the component B to water is 1:1.

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