Multi-component waterproof tile adhesive and method of use

Abstract

This invention provides a multi-component waterproof tile adhesive and its application method, belonging to the technical field of epoxy resin primers. The multi-component waterproof tile adhesive includes: Component A: a liquid component containing epoxy resin and a diluent; Component B: an epoxy resin curing agent; and Component C: a granular solid component containing quartz sand, fly ash, and hydrated magnesium silicate. In application, the epoxy resin in this waterproof tile adhesive reacts with the curing agent to form a three-dimensional cross-linked network structure, resulting in a robust waterproof structure. The addition of Component C shortens the curing time for tile installation, increases construction speed, and enhances the bonding strength between the tile and the ground.

Description

Technical Field

[0001] This invention relates to the field of epoxy resin base treatment agents, and in particular to a multi-component waterproof tile adhesive and its application method. Background Technology

[0002] In daily life, kitchens and bathrooms are areas with high water usage. This makes them more prone to water accumulation, which can easily seep into the floor layer through gaps and cause leaks.

[0003] When related technologies are used in the renovation and repair of kitchens and bathrooms, such as tile renovation and leak repair, the usual repair solution is to completely destroy the tiles and the original cement mortar layer, and then re-apply waterproofing and tile adhesive. The process is relatively complicated, the construction period is more than 10 days, and the re-construction has a significant impact. Summary of the Invention

[0004] In view of the above, in order to at least partially solve at least one of the aforementioned technical problems, the present invention provides a multi-component waterproof tile adhesive and a method of application thereof.

[0005] According to one aspect of the present invention, a multi-component waterproof tile adhesive is provided, comprising: component A: a liquid component containing epoxy resin and a diluent; component B: an epoxy resin curing agent; and component C: a particulate solid component containing quartz sand, fly ash and hydrated magnesium silicate.

[0006] According to an embodiment of the present invention, the mass percentage of hydrated magnesium silicate is 1 to 5% based on the sum of the weights of all components.

[0007] According to an embodiment of the present invention, the mass percentage of quartz sand is 25-50% and the mass percentage of fly ash is 20-40% based on the sum of the weights of the components.

[0008] According to an embodiment of the present invention, the mass ratio of epoxy resin to diluent is (10~20):(1~2); the diluent includes at least one of n-butyl glycidyl ether, propylene glycidyl ether, 5-ethylhexyl glycidyl ether, dibutyl phthalate, and dioctyl phthalate; the epoxy resin includes bisphenol A type epoxy resin.

[0009] Preferably, the epoxy resin includes at least one of E51 type epoxy resin and E44 type epoxy resin.

[0010] According to an embodiment of the present invention, the mass ratio of epoxy resin to epoxy resin curing agent is (2~4):(1~3); the epoxy resin curing agent includes amine curing agents.

[0011] Preferably, the curing agent includes at least one of aliphatic amine curing agents, polyamide curing agents, alicyclic amine curing agents, and aromatic amine curing agents.

[0012] According to an embodiment of the present invention, the waterproof tile adhesive is water-free; the quartz sand includes medium sand, preferably at least one of river sand and manufactured sand; the fly ash includes at least one of Class I power plant fly ash, Class II power plant fly ash, and Class III power plant fly ash.

[0013] According to an embodiment of the present invention, the mass ratio of component A, component B, and component C is 15:(3~15):(25~50).

[0014] According to another aspect of the present invention, a method for using the waterproof tile adhesive as described above is provided, comprising: first mixing and stirring epoxy resin and diluent to obtain component A; second mixing and stirring fly ash, hydrated magnesium silicate, and quartz sand to obtain component C; and third mixing and stirring component A, component B, and component C to obtain a mortar-like material.

[0015] According to an embodiment of the present invention, the first mixing and stirring time is 4 to 6 minutes, and the third mixing and stirring time is 2 to 4 minutes.

[0016] According to an embodiment of the present invention, the second mixing and stirring of fly ash, hydrated magnesium silicate, and quartz sand to obtain component C includes: mixing and stirring fly ash and hydrated magnesium silicate for 9-11 minutes, then adding quartz sand and continuing to mix and stir for 9-11 minutes to obtain component C.

[0017] According to embodiments of the present invention, in the multi-component waterproof tile adhesive, during use, the epoxy resin in component A, the main cementing material, is diluted with a diluent to reduce its viscosity. It then reacts rapidly with the curing agent in component B to form a stable three-dimensional cross-linked network structure, shortening the curing time. This allows the waterproof tile adhesive to reach sufficient strength within a short time (within 24 hours), accelerating the construction progress. The reaction between the two components helps the epoxy resin cure, enhancing the hardness and durability of the waterproof tile adhesive and reducing the downward flow path of water penetration. The addition of quartz sand and fly ash in component C fills the voids in the waterproof tile adhesive, increasing its density and providing support for the tiles, thus improving the overall strength and stability of the tile bond and further enhancing its waterproof performance. Hydrated magnesium silicate has good anti-sagging properties (reducing the flow or slippage of the waterproof tile adhesive during construction), enabling it to prevent tiles from shifting or falling off even with thicker applications, further strengthening the tile bonding strength. Attached Figure Description

[0018] Figure 1A flowchart illustrating the method of using the waterproof tile adhesive according to an embodiment of the present invention is shown. Detailed Implementation

[0019] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the invention for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0020] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "comprising" as used herein indicates the presence of features, steps, or operations, but does not exclude the presence or addition of one or more other features.

[0021] When using expressions such as "at least one of A, B, and C," the expression should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.). When using expressions such as "at least one of A, B, or C," the expression should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.).

[0022] In recent decades, the construction and real estate industry has developed rapidly, especially in fast-growing cities where older housing constitutes a significant proportion of the housing stock. The aging of these buildings impacts the quality of life and necessitates repairs. In older home repairs, issues such as water seepage, hollow tiles, and even tile detachment frequently occur in kitchens and bathrooms, making tile renovation and leak repair key areas of focus in kitchen and bathroom renovations. The current repair methods involve completely destroying the tiles and cement layer, re-leveling, applying waterproofing, and applying tile adhesive. This process is lengthy (over 10 days), significantly impacts the living environment, and is costly.

[0023] In realizing the concept of this invention, it was discovered that by utilizing the rapid reaction between epoxy resin and curing agent to form a cross-linked network structure, the curing time can be shortened and the waterproofing effect enhanced. The introduction of component C helps to firmly bond the tiles to the cement layer (or, when tiles are directly applied to the brick, the tile layer itself), further strengthening the waterproofing effect while also resulting in high tile adhesion strength and making the tiles less prone to detachment.

[0024] Specifically, according to one embodiment of the present invention, a multi-component waterproof tile adhesive is provided, comprising: component A: a liquid component containing epoxy resin and a diluent; component B: an epoxy resin curing agent; and component C: a particulate solid component containing quartz sand, fly ash, and hydrated magnesium silicate.

[0025] According to embodiments of the present invention, the epoxy resin in component A comprises a cementing material, which can be understood as a thermosetting plastic with good mechanical strength and adhesion. The addition of a diluent helps to reduce the viscosity of the epoxy resin, improve its fluidity and workability, and facilitate subsequent construction. Due to the introduction of the diluent, the viscosity of component A is maintained in a state of good fluidity. The epoxy resin curing agent in component B can react with the epoxy resin, promoting the curing of the epoxy resin and forming a stable network structure. Due to the rapid reaction speed of both, the curing time is shortened. In related technologies, the curing time of tile adhesive is about 7 days, while the curing time of using epoxy resin and epoxy resin curing agent is within 24 hours, resulting in a significant reduction in time. The quartz sand in component C helps to provide support and, as a filler material, more easily forms a mortar-like rough contact surface on the surface after the waterproof tile adhesive has dried, which helps to increase the friction between the adhesive and the tile and improve the adhesion between the adhesive and the tile. The fly ash presents as hollow spherical particles, reducing the resistance of the waterproof tile adhesive during construction and making the application process smoother. When hydrated magnesium silicate is mixed with its three components, it can reduce viscosity during stirring and increase viscosity when stationary. It can improve the anti-sagging performance of waterproof tile adhesive under static conditions by forming hydrogen bonds. Since the hydrogen bonds are broken during stirring, it can strengthen the bonding effect between the tile and the underlying structure (such as cement layer or original tile layer) during static curing without affecting the workability and mixing performance of the waterproof tile adhesive.

[0026] It should be noted that hydrated magnesium silicate has significant advantages over bentonite and fumed silica. To achieve the same anti-sagging properties, the amount of hydrated magnesium silicate added must be much less than that of bentonite and silica fume. Excessive amounts of bentonite and silica fume not only affect the mixing performance of the product, making on-site material mixing and dispersion difficult, but also reduce the product's troweling performance due to the increased powder-to-liquid ratio, making construction difficult. To achieve the same anti-sagging properties, the volume percentage of hydrated magnesium silicate added must be significantly lower than that of fumed silica. Fumed silica is a nano-sized powder, which is highly prone to agglomeration, affecting dispersion and leading to unstable application results. Furthermore, during production and construction, the small particle size and low density of fumed silica powder make it easily float in the air and can be inhaled by production and construction workers, causing health problems.

[0027] According to embodiments of the present invention, the mass percentage of hydrated magnesium silicate, based on the sum of the weights of all components, is 1-5%, for example, 1%, 2%, 3%, 4%, or 5%. Hydrated magnesium silicate within the above range can improve the fluidity of the waterproof tile adhesive, making it easier to apply evenly and improving construction efficiency. If the amount of hydrated magnesium silicate added is too small, the material's fluidity will be too high, making it difficult to achieve the required thickness when applying to vertical surfaces, increasing construction difficulty, and resulting in poor rheological resistance, which may cause tile displacement. If the amount of hydrated magnesium silicate added is too large, the waterproof tile adhesive will have high application resistance, making it difficult to level, thus affecting the overall performance of the waterproof tile adhesive when used to bond tiles.

[0028] According to embodiments of the present invention, the mass percentage of quartz sand, based on the sum of the weights of the components, is 25% to 50%, for example, 25%, 30%, 35%, 40%, 45%, or 50%. The mass percentage of fly ash is 20% to 40%, for example, 20%, 25%, 30%, 35%, or 40%. When the mass percentages of quartz sand and fly ash are within the above ranges, it helps to form a solid waterproof layer structure when bonding tiles, and helps to evenly apply and fill gaps and defects in the waterproof tile adhesive during use, thereby improving its impermeability and bonding strength.

[0029] According to embodiments of the present invention, the mass ratio of epoxy resin to diluent is (10~20):(1~2), for example, it can be 10:1, 15:1, 20:1, 5:1, or 15:2. Adjusting the mass ratio to the above range helps the epoxy resin to have better distribution and to cure the epoxy resin uniformly, avoiding quality defects such as hollow tiles after curing. The diluent includes at least one of n-butyl glycidyl ether, propylene glycidyl ether, 5-ethylhexyl glycidyl ether, dibutyl phthalate, and dioctyl phthalate. The above diluent helps to adjust the wettability, resulting in better distribution of the epoxy resin in the multi-component waterproof tile adhesive. The epoxy resin includes bisphenol A type epoxy resin. Bisphenol A type epoxy resin has a lower viscosity and better cured state compared to epoxy resins.

[0030] Preferably, the epoxy resin includes at least one of E51 type epoxy resin and E44 type epoxy resin.

[0031] According to an embodiment of the present invention, the mass ratio of epoxy resin to epoxy resin curing agent is (2~4):(1~3), for example, it can be 2:3, 1:1, 4:3, 3:2, 2:1, 3:1, 4:1, etc.; the epoxy resin curing agent includes amine curing agents.

[0032] Preferably, the curing agent includes at least one of aliphatic amine curing agents, polyamide curing agents, cycloaliphatic amine curing agents, and aromatic amine curing agents. When the above-mentioned curing agent is used, it can rapidly interact with the epoxy resin to cure, shortening the curing time.

[0033] It should be noted that amine curing agents have high volatility and a certain degree of toxicity. Reacting some of the amine groups in amine curing agents with epoxy resin and diluents helps to increase the molecular weight, extend the working time, and reduce toxicity and volatility. Modification methods can include: mixing aliphatic amines with aromatic amines to help balance curing speed and mechanical properties; blending or grafting amine curing agents with polymers (such as polyurethane, polyether, etc.) to modify them.

[0034] According to embodiments of the present invention, the waterproof tile adhesive is water-free. The multi-component waterproof tile adhesive of the present invention is an anhydrous formulation, which avoids chemical changes that may be caused by moisture, ensuring the stability of the waterproof tile adhesive during storage and use. Because this waterproof tile adhesive is water-free, no bubbles or cracks will be generated during the curing process, further improving the waterproof performance after curing. It is particularly suitable for relatively humid environments such as kitchens and bathrooms, extending its service life. The quartz sand includes medium sand, which has a moderate particle size, contributing to good filling and support properties. Preferably, it is at least one of river sand and manufactured sand. River sand has fewer impurities and a rounded shape, improving the fluidity of the waterproof tile adhesive during use. Manufactured sand has a regular particle shape and uniform particle size distribution, which helps to improve density and reduce tile hollowness and warping. The fly ash includes at least one of Class I, Class II, and Class III power plant fly ash. By combining quartz sand and fly ash, the strength and stability of the waterproof tile adhesive are significantly improved.

[0035] According to an embodiment of the present invention, the mass ratio of component A, component B, and component C is 15:(3~15):(25~50), for example, it can be 15:3:25, 15:3:50, 15:3:30, 3:1:6, 3:2:5, etc. Preferably, the mass ratio of component A, component B, and component C is 150:30:365. Adjusting the mass ratio of the three components within the above range helps to ensure waterproofing while having good bonding strength and a short setting time (less than 24 hours), while maintaining a 1-hour workable time. The workable time can be understood as the longest time from the start of mixing of components A, B, and C to when they are ready for normal use (if it exceeds 1 hour, the fluidity is poor and it is difficult to apply), making the operation process faster.

[0036] According to embodiments of the present invention, this waterproof tile adhesive can achieve waterproofing in kitchens and bathrooms and rapid repair of tiles. It is suitable for various application scenarios such as replacing tiles, re-laying tiles on top of existing tiles without removing them, and repairing waterproof layers.

[0037] According to another embodiment of the present invention, a method for using the waterproof tile adhesive as described above is provided. Figure 1 A flowchart illustrating the method of using the waterproof tile adhesive according to an embodiment of the present invention is provided. Please refer to... Figure 1 This includes operations S101~S103.

[0038] In operation S101, the epoxy resin and diluent are mixed and stirred to obtain component A.

[0039] According to an embodiment of the present invention, the diluent and epoxy resin are first mixed and stirred to effectively reduce the viscosity of the epoxy resin, making it easier to mix evenly and ensuring that the epoxy resin and diluent are fully integrated. The addition of the diluent improves the fluidity of the epoxy resin, making it easier to apply and adjust, thus improving construction efficiency.

[0040] In operation S102, fly ash, hydrated magnesium silicate, and quartz sand are mixed and stirred for the second time to obtain component C.

[0041] According to embodiments of the present invention, the mixing and stirring of fly ash, hydrated magnesium silicate, and quartz sand ensures uniform dispersion of each component, avoiding clumping or unevenness. The hygroscopicity and breathability of fly ash and hydrated magnesium silicate can create a balanced humidity environment inside the waterproof tile adhesive, reducing moisture penetration and improving waterproof performance. The physical support and abrasion resistance provided by quartz sand can significantly improve the surface hardness and abrasion resistance of the waterproof tile adhesive.

[0042] In operation S103, components A, B, and C are mixed and stirred for the third time to obtain a mortar-like material.

[0043] According to embodiments of the present invention, the epoxy resin curing agent reacts with the epoxy resin to form a stable network structure, ensuring that the adhesive reaches sufficient strength in a short time and shortening the curing time. The mixed mortar-like material has good fluidity and thixotropy, is easy to apply and adjust, and improves the convenience and controllability of construction.

[0044] According to embodiments of the present invention, the waterproof tile adhesive has fast construction, short curing time (less than 24 hours), high bonding strength, and convenient construction, which is conducive to its promotion in the home decoration and construction industry.

[0045] According to an embodiment of the present invention, the first mixing time is 4 to 6 minutes, for example, 4 minutes, 5 minutes or 6 minutes, preferably 5 minutes, and the third mixing time is 2 to 4 minutes, for example, 2 minutes, 3 minutes or 4 minutes, preferably 3 minutes. After mixing, the waterproof tile adhesive has a mortar-like consistency.

[0046] According to an embodiment of the present invention, operation S102 specifically includes: mixing and stirring fly ash and hydrated magnesium silicate for 9-11 minutes, for example, 9 minutes, 10 minutes, or 11 minutes, preferably 10 minutes; then adding quartz sand and continuing to mix and stir for another 9-11 minutes, for example, 9 minutes, 10 minutes, or 11 minutes, preferably 10 minutes, to obtain component C. Mixing fly ash and hydrated magnesium silicate first ensures that the two materials, with their fine particles, are fully dispersed, avoiding local agglomeration or aggregation. Quartz sand particles are larger, and adding them later helps to evenly distribute the quartz sand in the fly ash and hydrated magnesium silicate.

[0047] In one specific embodiment, the repair and reinforcement method for replacing new tiles in the kitchen and bathroom may include the following operations:

[0048] The epoxy resin and diluent were thoroughly stirred to obtain component A;

[0049] Fly ash, hydrated magnesium silicate, and quartz sand were thoroughly mixed to obtain component C.

[0050] Mix components A, B, and C thoroughly to obtain a mortar-like material.

[0051] Remove the tiles to be replaced.

[0052] Apply the mortar-like material to the cement-based surface after the tiles have been removed.

[0053] Place the new tiles back in their original positions and use a vibrating device to make them flat and fit tightly.

[0054] In one specific embodiment, the method for repairing and reinforcing kitchen and bathroom tiles by applying new tiles may include the following operations:

[0055] The epoxy resin and diluent were thoroughly stirred to obtain component A;

[0056] Fly ash, hydrated magnesium silicate, and quartz sand were thoroughly mixed to obtain component C.

[0057] Mix components A, B, and C thoroughly to obtain a mortar-like material.

[0058] Grind the existing tiles or cut a 3mm deep groove every 10cm, crisscrossing them, to increase the surface roughness and improve adhesion.

[0059] Apply the mortar-like material to the prepared tile surface.

[0060] Apply the new tiles to the mortar-like material and use a vibrating device to make them flat and adhere tightly.

[0061] In one specific embodiment, using a waterproof tile adhesive as a waterproof layer may include the following operations:

[0062] The epoxy resin and diluent were thoroughly stirred to obtain component A;

[0063] Fly ash, hydrated magnesium silicate, and quartz sand were thoroughly mixed to obtain component C.

[0064] Mix components A, B, and C thoroughly to obtain a mortar-like material.

[0065] Apply the mortar-like material to the base layer of the ground and allow it to dry for 24 hours at 20°C to form a waterproof layer.

[0066] The present invention will be further illustrated below through embodiments and related test experiments and results. In the following detailed description, numerous specific details are set forth for ease of explanation to provide a comprehensive understanding of the embodiments of the present invention. However, it will be apparent that one or more embodiments may be practiced without these specific details. Moreover, the details in the following embodiments can be arbitrarily combined to form other feasible embodiments without conflict.

[0067] It should be noted that the specific embodiments described below are merely illustrative examples, and the scope of protection of this invention is not limited thereto. The chemicals and raw materials used in the following embodiments are all commercially available or prepared using recognized processing methods.

[0068] Example 1:

[0069] The components of waterproof tile adhesive, by weight, are:

[0070] Component A: 150 parts of E51 epoxy resin, 15 parts of acrylic glycidyl ether;

[0071] Component B: 50 parts of modified fatty amine curing agent;

[0072] Component C: 200 parts quartz sand, 150 parts fly ash, and 15 parts hydrated magnesium silicate.

[0073] Preparation method: Weigh component A according to the above weight ratio and mix it with a mixer for 5 minutes until it is uniform. Weigh component B according to the ratio. Component C: Weigh the raw materials according to the ratio, add fly ash and hydrated magnesium silicate to the mixer first, mix for 10 minutes until it is uniform, then add quartz sand and continue mixing for 10 minutes until it is uniform.

[0074] The tile replacement process is as follows:

[0075] Stir components A, B, and C to mix them thoroughly, so that the mass ratio of component A: component B: component C is 150:50:365.

[0076] Remove the tiles that need to be replaced.

[0077] Apply the well-mixed mortar-like material to the cement-based surface after the tiles have been removed.

[0078] Place the new tiles back in their original positions and use a vibrating device to make them flat and fit tightly.

[0079] The process of laying tiles on top of bricks is as follows:

[0080] Stir components A, B, and C to mix them thoroughly, so that the mass ratio of component A: component B: component C is 150:50:365.

[0081] Grind the existing tiles or cut a groove 3mm deep every 10cm, crisscrossing horizontally and vertically.

[0082] Apply the well-mixed mortar-like material to the prepared tile surface.

[0083] Apply the new tiles to the mortar-like material and use a vibrating device to make them flat and adhere tightly.

[0084] The process of using it as a waterproof layer is as follows:

[0085] Stir components A, B, and C to mix them thoroughly, so that the mass ratio of component A: component B: component C is 150:50:365.

[0086] Apply the well-mixed mortar-like material to the base layer of the ground and allow it to dry at 20°C for 24 hours to form a waterproof layer.

[0087] The process for waterproofing and repairing joints is as follows:

[0088] Stir and mix components A and B thoroughly so that the mass ratio of component A to component B is A:B = 150:50.

[0089] Clean the grout between the bathroom tiles.

[0090] Install baffles on both sides of the gap and at the drain opening, with a baffle height of 2cm.

[0091] Pour the well-mixed solution into the gaps until no more leakage occurs, then clean up any remaining material.

[0092] Taking tile replacement as an example, the structure after tile replacement in Example 1 is compared with the tile adhesive bonding method commonly used in related technologies. The test indicators are shown in Table 1 below.

[0093] Table 1. Performance comparison of Example 1 and tile adhesive for tile laying

[0094]

[0095] As shown in Table 1 above, compared with traditional cement-based tile adhesives, the waterproof tile adhesive provided by this invention has a fast drying time, allowing for normal use within 24 hours, with minimal impact on residents' lives; it boasts high bonding strength, enabling direct tile application; and it also possesses excellent impermeability, allowing for simultaneous waterproofing and tile application, saving construction time and effort. Furthermore, the waterproof tile adhesive of this invention offers flexible application methods; it can be mixed with its three components (A, B, and C) for application and bonding, or its components (A and B) can be mixed for grouting and sealing leaks as needed.

[0096] Comparative Example 1:

[0097] The components of waterproof tile adhesive, by weight, are:

[0098] Component A: 150 parts of E51 epoxy resin, 15 parts of acrylic glycidyl ether;

[0099] Component B: 50 parts of modified fatty amine curing agent;

[0100] Component C: 200 parts quartz sand, 150 parts fly ash, and 130 parts bentonite.

[0101] Preparation method: Weigh component A according to the above weight ratio and mix it with a mixer for 5 minutes until it is evenly mixed. Weigh component B according to the ratio. Component C: Weigh the raw materials according to the ratio, add fly ash and bentonite to the mixer first, mix for 10 minutes until evenly mixed, then add quartz sand and continue mixing for 10 minutes until evenly mixed.

[0102] The tile replacement process is as follows:

[0103] Stir and mix components A, B, and C thoroughly so that the mass ratio of component A: component B: component C is 150:50:480.

[0104] Remove the tiles that need to be replaced.

[0105] Apply the well-mixed mortar-like material to the cement-based surface after the tiles have been removed.

[0106] Place the new tiles back in their original positions and use a vibrating device to make them flat and fit tightly.

[0107] The structure of Comparative Example 1 after the tiles were replaced was subjected to relevant tests, and the test indicators are shown in Table 2 below.

[0108] Comparative Example 2:

[0109] The components of waterproof tile adhesive, by weight, are:

[0110] Component A: 150 parts of E51 epoxy resin, 15 parts of acrylic glycidyl ether;

[0111] Component B: 50 parts of modified fatty amine curing agent;

[0112] Component C: 200 parts quartz sand, 150 parts fly ash, and 15 parts fumed silica.

[0113] Preparation method: Weigh component A according to the above weight ratio and mix it with a mixer for 5 minutes until it is uniform. Weigh component B according to the ratio. Component C: Weigh the raw materials according to the ratio, add fly ash and fumed silica to the mixer first, mix for 10 minutes until uniform, then add quartz sand and continue mixing for 10 minutes until uniform.

[0114] The tile replacement process is as follows:

[0115] Stir components A, B, and C to mix them thoroughly, so that the mass ratio of component A: component B: component C is 150:50:365.

[0116] Remove the tiles that need to be replaced.

[0117] Apply the well-mixed mortar-like material to the cement-based surface after the tiles have been removed.

[0118] The structure of Comparative Example 2 after the tiles were replaced was subjected to relevant tests, and the test indicators are shown in Table 2 below.

[0119] Comparative Example 3:

[0120] The components of waterproof tile adhesive, by weight, are:

[0121] Component A: 150 parts of E51 epoxy resin, 15 parts of acrylic glycidyl ether;

[0122] Component B: 50 parts of modified fatty amine curing agent;

[0123] Component C: 200 parts quartz sand, 150 parts fly ash, and 100 parts silica fume.

[0124] Preparation method: Weigh component A according to the above weight ratio and mix it with a mixer for 5 minutes until it is evenly mixed. Weigh component B according to the ratio. Component C: Weigh the raw materials according to the ratio, add fly ash and silica fume to the mixer first, mix for 10 minutes until evenly mixed, then add quartz sand and continue mixing for 10 minutes until evenly mixed.

[0125] The tile replacement process is as follows:

[0126] Stir and mix components A, B, and C thoroughly so that the mass ratio of component A: component B: component C is 150:50:450.

[0127] Remove the tiles that need to be replaced.

[0128] Apply the well-mixed mortar-like material to the cement-based surface after the tiles have been removed.

[0129] Place the new tiles back in their original positions and use a vibrating device to make them flat and fit tightly.

[0130] Taking tile replacement as an example, the structure of Example 1 after tile replacement was compared with that of Comparative Examples 1 to 3 using other rheology modifiers. The test indicators are shown in Table 2 below.

[0131] Table 2 Comparison of tile-laying performance between Example 1 and Comparative Examples 1-3

[0132]

[0133] As shown in Table 2, the added mass of bentonite in Comparative Example 1 and silica fume in Comparative Example 3 needs to be much greater than that of hydrated magnesium silicate to obtain suitable anti-sagging properties. However, due to the higher added mass of bentonite and silica fume, the mixing performance of the product is relatively poor, making on-site material mixing difficult and achieving a uniform dispersion in practical applications. Furthermore, the increased powder-to-liquid ratio reduces the troweling performance of the waterproof tile adhesive, making construction more difficult. Although the added mass of fumed silica in Comparative Example 2 and hydrated magnesium silicate in the Example 3 is the same, the volume of fumed silica is significantly higher than that of hydrated magnesium silicate. Since fumed silica is a nano-sized powder, it is prone to agglomeration, resulting in poor dispersibility of component C during application. The relevant data in Table 2 show that the bonding strength between the tiled structures obtained in Comparative Examples 1-3 and the cement layer and tiles is weaker than that in Example 1, and the impermeability is also worse. This indicates that adding hydrated magnesium silicate to component C can maintain good bonding and waterproofing performance even with a smaller addition amount.

[0134] It should be noted that the working time can be understood as the time that the waterproof tile adhesive can be applied during use. The working time for ratios 1 to 3 is relatively short, and it is necessary to prepare small amounts multiple times when using it, making the process more cumbersome.

[0135] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-component waterproof tile adhesive, comprising: Component A: The liquid component containing epoxy resin and diluent; Component B: Epoxy resin curing agent; Component C: A particulate solid component containing quartz sand, fly ash, and hydrated magnesium silicate.

2. The waterproof tile adhesive according to claim 1, wherein, The mass percentage of hydrated magnesium silicate is 1-5% based on the sum of the weights of all components.

3. The waterproof tile adhesive according to claim 1, wherein, Based on the sum of the weights of all components, the mass percentage of quartz sand is 25-50%, and the mass percentage of fly ash is 20-40%.

4. The waterproof tile adhesive according to claim 3, wherein, The mass ratio of the epoxy resin to the diluent is (10~20):(1~2). The diluent includes at least one of n-butyl glycidyl ether, propylene glycidyl ether, 5-ethylhexyl glycidyl ether, dibutyl phthalate, and dioctyl phthalate; The epoxy resin includes bisphenol A type epoxy resin; Preferably, the epoxy resin includes at least one of E51 type epoxy resin and E44 type epoxy resin.

5. The waterproof tile adhesive according to claim 1, wherein, The mass ratio of the epoxy resin to the epoxy resin curing agent is (2~4):(1~3). The epoxy resin curing agent includes amine curing agents; Preferably, the curing agent includes at least one of aliphatic amine curing agents, polyamide curing agents, alicyclic amine curing agents, and aromatic amine curing agents.

6. The waterproof tile adhesive according to claim 1, wherein, The waterproof tile adhesive contains no water; The quartz sand includes medium sand, preferably at least one of river sand and manufactured sand; The fly ash includes at least one of Class I power plant fly ash, Class II power plant fly ash, and Class III power plant fly ash.

7. The waterproof tile adhesive according to claim 1, wherein, The mass ratio of component A, component B, and component C is 15:(3~15):(25~50).

8. A method of using a waterproof tile adhesive as described in any one of claims 1 to 7, comprising: The epoxy resin and diluent are mixed and stirred to obtain component A; Fly ash, hydrated magnesium silicate, and quartz sand are mixed and stirred in a second process to obtain component C. Components A, B, and C are mixed and stirred in a third step to obtain a mortar-like material.

9. The method of use according to claim 8, wherein, The first mixing and stirring time is 4-6 minutes, and the third mixing and stirring time is 2-4 minutes.

10. The method of use according to claim 8, wherein, The second mixing and stirring of fly ash, hydrated magnesium silicate, and quartz sand yields component C, which includes: After mixing and stirring fly ash and hydrated magnesium silicate for 9-11 minutes, add quartz sand and continue mixing and stirring for another 9-11 minutes to obtain component C.

Images