Special adhesive for flexible tiles of interior and exterior walls and preparation method of special adhesive

Abstract

The invention relates to the technical field of building materials, and particularly discloses a special adhesive for internal and external wall flexible tiles and a preparation method thereof. The special glue comprises the following components in parts by weight: 30-50 parts of cement, 60-100 parts of dry sand, 5-10 parts of epoxy resin, 0.05-0.1 part of a curing agent, 1-3 parts of redispersible latex powder, 0.3-1 part of hydroxymethyl cellulose, 1-5 parts of alkenyl silane succinic anhydride and 20-30 parts of water. The special adhesive provided by the invention is suitable for adhesion between organic flexible tiles and inner and outer wall surfaces, especially flexible tiles manufactured by taking organic silicon as a modifier or a binder, and the adhesion strength between the flexible tiles and the inner and outer wall surfaces can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of building materials, and more specifically, to a special adhesive for soft tiles for interior and exterior walls and a preparation method thereof. Background Art

[0002] Ceramic tile exterior wall finishes are favored by building developers because of their beauty, texture and durability. However, due to the influence of seasons, environment and temperature differences, the exterior walls of buildings often become detached, and even accidents of exterior wall tiles falling off and injuring pedestrians and vehicles are common. Therefore, many areas prohibit ceramic tiles from being used as finishing materials for external insulation of high-rise building exterior walls.

[0003] Colored flexible tiles just make up for the shortcomings of ceramic tile finishing materials, and provide a new decorative concept for the external insulation of high-rise building exterior walls. The weight of ceramic tiles used for exterior wall decoration on the market is more than 10kg per square meter, while the weight of flexible tiles is only 3kg-4kg per square meter, which can effectively reduce the weight of the building exterior wall decoration and the load of the finishing layer, and improve the safety of the exterior wall finishing layer. On the other hand, traditional tiles are rigid products. Under the influence of environmental conditions, deformation stress is formed between the adhesive and the tiles, which easily causes the tiles to fall off. Flexible tiles have good softness and can absorb and release deformation stress caused by environmental changes, preventing stress concentration from causing tiles to fall off.

[0004] Flexible facing bricks, also known as soft ceramic tiles, are flexible and lightweight building decoration materials made from colored modified inorganic mineral powder as the main raw material, adding a small amount of water-soluble polymers, and through a specific process. It is not only colorful and has the decorative effect of high-end exterior wall decoration materials such as ceramic tiles and marble, but also light in weight, flexible, and crack-resistant, and can meet the decoration requirements of arc-shaped, circular and other special-shaped buildings. In addition, flexible facing bricks also have good weather resistance, waterproofness, impermeability and stain resistance, long service life, and significant economic benefits.

[0005] However, despite the many advantages of flexible facing tiles, in actual construction, they face the problem of poor bonding performance of traditional cement mortar. As an inorganic material, the bonding principle of traditional cement mortar mainly relies on the mechanical and chemical bonding between calcium hydroxide produced by cement hydration and aggregate. However, the surface material and structure of flexible facing tiles are significantly different from those of traditional porcelain tiles, and the high molecular polymer layer on the surface makes it difficult for cement mortar to form a strong bond with them.

[0006] In addition, when traditional cement mortar is used to bond flexible facing tiles, the bonding thickness is often too large. This is mainly because the flexible facing tiles themselves have a certain degree of flexibility, while cement mortar is a rigid material, and there are significant differences in their physical properties. Therefore, during the bonding process, in order to make up for this difference, it is often necessary to increase the thickness of the cement mortar to ensure the firmness of the bond. However, this approach not only increases the construction difficulty and cost but may also cause problems such as hollowing and cracking in the bonding layer, affecting the safety and durability of the entire exterior wall decoration system.

[0007] In summary, the bonding performance of traditional cement mortar for flexible facing tiles is poor, and the bonding thickness is too large, which has become a technical bottleneck restricting the wide application of flexible facing tiles in construction projects. Therefore, developing a new type of bonding material suitable for flexible facing tiles to improve its bonding performance and construction efficiency has become an urgent technical problem in the current building materials field. Summary of the Invention

[0008] In order to solve the above technical problems, the present application provides a special adhesive for interior and exterior wall soft tiles and its preparation method. This special adhesive is suitable for the pasting between organic soft tiles and interior and exterior walls, especially for soft tiles made with silicone as a modifier or binder, and can effectively improve the pasting strength between the soft tiles and the interior and exterior walls.

[0009] In the first aspect, the present application provides a special adhesive for interior and exterior wall soft tiles. The special adhesive for interior and exterior wall soft tiles comprises the following components in parts by weight: 30 - 50 parts of cement, 60 - 100 parts of dry sand, 5 - 10 parts of epoxy resin, 0.05 - 0.1 part of curing agent, 1 - 3 parts of redispersible latex powder, 0.3 - 1 part of hydroxymethyl cellulose, 1 - 5 parts of alkenylsilane succinic anhydride, and 20 - 30 parts of water;

[0010] The structural general formula of the alkenylsilane succinic anhydride is shown as Formula Ⅰ: Wherein, R0 is a straight-chain or branched-chain alkane with 0 - 15 carbon atoms, and R is a straight-chain or straight-chain alkane with 1 - 5 carbon atoms.

[0011] Redispersible latex powder is a powder organic polymer adhesive. When it comes into contact with water, it will redisperse into an organic polymer emulsion, and when the water in the cement mortar disappears, it will form a polymer film. Under the action of cement, the formed polymer film will not undergo secondary dispersion. This polymer has excellent adhesion to smooth flexible facing tiles with few voids or no voids or smooth bases, making up for the defect of poor adhesion between cement mortar and smooth bases. Therefore, polymer-modified bonding mortar is an ideal bonding material for flexible facing tiles.

[0012] The silane structure of alkenylsilane succinic anhydride can further improve the adhesion between the special adhesive and the inorganic wall surface, while the anhydride group improves the adhesion between the special adhesive and the organic soft ceramic tile. Meanwhile, the anhydride group can react with the epoxy group of the epoxy resin to enhance the binding force between the alkenylsilane succinic anhydride and the special adhesive.

[0013] In addition, alkenylsilane succinic anhydride can introduce a series of flexible branched chains with different lengths into the polymer. Through the physical entanglement between the long side chains, the crosslinking density or crystallinity of the system is reduced. Moreover, the long side chain segments have higher mobility, which can slow down the stress concentration effect. When subjected to external forces, they can absorb energy and toughen the polymer, thus endowing the binder with a certain deformation ability to adapt to the bonding of soft ceramic tiles with a certain flexibility.

[0014] Preferably, the cement is composed of one or two of portland cement and sulfoaluminate cement. More preferably, the cement is portland cement P.O 42.5.

[0015] Preferably, the particle size of the dry sand is 70 - 140 mesh. More preferably, the particle size of the dry sand is 80 - 100 mesh.

[0016] Preferably, the redispersible latex powder is composed of one or more of acrylate latex powder, vinyl acetate - ethylene latex powder, styrene - acrylic latex powder, vinyl acetate - ethylene latex powder.

[0017] Preferably, the epoxy resin is selected from one or more of bisphenol A type epoxy resin, bisphenol F type epoxy resin, polyphenol type glycidyl ether epoxy resin, aliphatic glycidyl ether epoxy resin, glycidyl ester type epoxy resin, glycidyl amine type epoxy resin, alicyclic epoxy resin, triglycidyl isocyanurate epoxy resin, hydantoin epoxy resin.

[0018] Preferably, the curing agent is selected from one or more of phenolic accelerators, imidazole accelerators, amine accelerators, Lewis acid accelerators.

[0019] Among them, phenolic accelerators include phenol, resorcinol, nonylphenol, bisphenol A, 2,4,6 - tris(dimethylaminomethyl)phenol, etc.; amine accelerators include o - hydroxybenzyl dimethylamine, triethylamine, triethanolamine, benzyl dimethylamine, alkyltrimethyl ammonium bromide salts, etc.; imidazole accelerators include 2 - methylimidazole, 2 - phenylimidazole, etc.; Lewis acid accelerators include BF3, SnCl4, AlCl3, FeCl3, TiCl4, ZnCl2, etc.

[0020] In a second aspect, the present application provides an alkenylsilane succinic anhydride, which is obtained by reacting an alkenylsilane with maleic anhydride.

[0021] Further, the specific preparation steps of the alkenylsilane succinic anhydride are as follows: After mixing the alkenylsilane and maleic anhydride, heat and react for a period of time, and then obtain it after separation and purification.

[0022] The synthesis route of the alkenylsilane succinic anhydride is as follows:

[0023]

[0024] Among them, R0 is a straight-chain or branched-chain alkane with 0-15 carbon atoms, and R is a straight-chain or straight-chain alkane with 1-5 carbon atoms.

[0025] Preferably, R0 is a straight-chain alkane with 0-15 carbon atoms. More preferably, it is a straight-chain alkane with 0-7 carbon atoms.

[0026] Preferably, the molar ratio of the alkenylsilane to maleic anhydride is (1-1.2):1.

[0027] Preferably, the reaction temperature after mixing the alkenylsilane and maleic anhydride is 160-220 °C, and the reaction time is 4-8 h.

[0028] In the third aspect, the present application provides a preparation method of a special adhesive for interior and exterior wall flexible ceramic tiles, adopting the following technical scheme:

[0029] Mix cement, dry sand, curing agent, redispersible latex powder, and carboxymethyl cellulose evenly to obtain mixture A;

[0030] Mix epoxy resin, alkenylsilane succinic anhydride, and water evenly to obtain mixture B;

[0031] Mix mixture A and mixture B evenly to obtain the special adhesive for interior and exterior wall flexible ceramic tiles.

[0032] In summary, the present application has the following beneficial effects:

[0033] It can effectively bond organic flexible ceramic tiles to inorganic walls, and has the characteristics of strong adhesion; it solves the problems that traditional cement mortar has strong rigidity and cannot effectively cope with the shrinkage and deformation of flexible ceramic tiles, has high toughness, has a certain flexibility, and is not easy to crack, hollow, or fall off. Specific Embodiments

[0034] The present application will be further described in detail below with reference to examples and comparative examples.

[0035] The present application:

[0036] Ordinary Portland cement P.O 42.5 is used for cement; the particle size of the dry sand is 80-100 mesh.

[0037] The redispersible latex powder was purchased from Guangzhou Qisheng Chemical Co., Ltd.; the hydroxymethyl cellulose was purchased from Jiangsu Runfeng Synthetic Technology Co., Ltd.; the epoxy resin specifically used was epoxy resin E-51, which was purchased from Guangzhou Nalong Chemical Co., Ltd.; the curing agent used was MeHHPA, which was purchased from Shandong Xinheng Chemical Co., Ltd.

[0038] Allyltrimethoxysilane was purchased from Zhengzhou Gaike Technology Co., Ltd., and both 5-hexenyltrimethoxysilane and 10-undecenyltrimethoxysilane were purchased from Nanjing Silicon Innovation Materials Co., Ltd.

[0039] The alkenyl succinic anhydride specifically used was 2-octenyl succinic anhydride, CAS No.: 26680-54-6.

[0040] Example 1

[0041] Preparation of alkenylsilane succinic anhydride: In a 250 mL flask, 35.70 g (0.22 mol) of allyltrimethoxysilane and 19.61 g (0.2 mol) of maleic anhydride were added as reaction raw materials, 0.47 g of hydroquinone was added as an inhibitor, 5.77 g of methanesulfonic acid was added as a catalyst, the reaction temperature was set at 180 °C, after reacting for 6 h, it was cooled to room temperature, 100 mL of petroleum ether and 10 g of clay were added, stirred for 10 min and then filtered by suction. The obtained filtrate was rotary evaporated and concentrated, and the residue was subjected to vacuum distillation at 9 mmHg and 290 °C to obtain 36.98 g of alkenylsilane succinic anhydride, with a yield of 71.1%.

[0042] The 1H NMR data of the product was as follows:

[0043] 1 1H-NMR((CD3)2CO, 400 MHz, ppm): 5.60 (t, 1H), 5.01 (d, 1H), 3.58 (s, 9H), 3.10 (d, 2H), 3.04 (t, 1H), 2.22 (t, 2H).

[0044] Example 2

[0045] Preparation of alkenylsilane succinic anhydride: In a 250 mL flask, 44.95 g (0.22 mol) of 5-hexenyltrimethoxysilane and 19.61 g (0.2 mol) of maleic anhydride were added as reaction raw materials, 0.47 g of hydroquinone was added as an inhibitor, 5.77 g of methanesulfonic acid was added as a catalyst, the reaction temperature was set at 180 °C, after reacting for 6 h, it was cooled to room temperature, 100 mL of petroleum ether and 10 g of clay were added, stirred for 10 min and then filtered by suction. The obtained filtrate was rotary evaporated and concentrated, and the residue was subjected to vacuum distillation at 9 mmHg and 290 °C to obtain 45.50 g of alkenylsilane succinic anhydride, with a yield of 75.3%.

[0046] The 1H NMR data of the product was as follows:

[0047] 1 H-NMR((CD3)2CO, 400 MHz, ppm): 5.48 (t, 2H), 3.58 (s, 9H), 3.12 (d, 2H), 3.05 (t, 1H), 2.21 (t, 2H), 1.96 (t, 2H), 1.40 (t, 2H), 0.58 (t, 2H).

[0048] Example 3

[0049] Preparation of alkenylsilane succinic anhydride: In a 250 mL flask, 60.38 g (0.22 mol) of 10-undecenyltrimethoxysilane and 19.61 g (0.2 mol) of maleic anhydride were added as reaction raw materials. 0.47 g of hydroquinone was added as an inhibitor, and 5.77 g of methanesulfonic acid was added as a catalyst. The reaction temperature was set at 180 °C. After reacting for 8 h, it was cooled to room temperature. 100 mL of petroleum ether and 10 g of clay were added, stirred for 10 min and then filtered by suction. The obtained filtrate was concentrated by rotary evaporation, and the residue was distilled under reduced pressure at 9 mmHg and 290 °C to obtain 61.71 g of alkenylsilane succinic anhydride, with a yield of 82.9%.

[0050] The 1H-NMR data of the product are as follows:

[0051] 1 H-NMR((CD3)2CO, 400 MHz, ppm): 5.46 (t, 2H), 3.58 (s, 9H), 3.11 (d, 2H), 3.04 (t, 1H), 2.20 (t, 2H), 1.94 (t, 2H), 1.33 (t, 2H), 1.30 (t, 2H), 1.29 (m, 8H), 0.58 (t, 2H).

[0052] Example 4-1

[0053] Preparation of special glue for interior and exterior wall flexible ceramic tiles: According to the formula in Table 1, cement, dry sand, curing agent, redispersible latex powder, and carboxymethyl cellulose were mixed evenly to obtain mixture A; epoxy resin, alkenylsilane succinic anhydride, and water were mixed evenly to obtain mixture B; mixture A and mixture B were mixed evenly to obtain the product.

[0054] In this example, the alkenylsilane succinic anhydride was obtained from the preparation in Example 1.

[0055] Example 4-2

[0056] Preparation of special glue for interior and exterior wall flexible ceramic tiles: The preparation method was the same as that in Example 4-1. The difference from Example 4-1 was the dosage of the formula components. For the specific formula, see Table 1.

[0057] Example 4-3

[0058] Preparation of special glue for interior and exterior wall soft ceramic tiles: The preparation method is the same as that of Example 4-1. The difference from Example 4-1 lies in the different dosages of the formula components. For the specific formula, see Table 1.

[0059] Example 4-4

[0060] Preparation of special glue for interior and exterior wall soft ceramic tiles: The preparation method is the same as that of Example 4-1. The difference from Example 4-1 lies in the different dosages of the formula components. For the specific formula, see Table 1.

[0061] Example 4-5

[0062] Preparation of special glue for interior and exterior wall soft ceramic tiles: The preparation method is the same as that of Example 4-1. The difference from Example 4-1 lies in the different dosages of the formula components. For the specific formula, see Table 1.

[0063] Example 4-6

[0064] Preparation of special glue for interior and exterior wall soft ceramic tiles: The formula dosage and preparation method are the same as those of Example 4-1. The difference from Example 4-1 is that in this example, the alkenylsilane succinic anhydride is obtained from the preparation of Example 2.

[0065] Example 4-7

[0066] Preparation of special glue for interior and exterior wall soft ceramic tiles: The formula dosage and preparation method are the same as those of Example 4-1. The difference from Example 4-1 is that in this example, the alkenylsilane succinic anhydride is obtained from the preparation of Example 3.

[0067] Table 1 (unit: 0.1 kg)

[0068] Component Example 4-1 Example 4-2 Example 4-3 Example 4-4 Example 4-5 Cement 30 40 50 30 30 Dry sand 60 80 100 60 60 Epoxy resin 5 7 10 5 5 Curing agent 0.05 0.06 0.1 0.05 0.05 Redispersible latex powder 1 2 3 1 1 Hydroxypropyl methyl cellulose 0.3 0.6 1 0.3 0.3 Alkenyl succinic anhydride 1 3 5 3 5 Water 20 25 30 20 20

[0069] Comparative Example 1

[0070] Preparation of special glue for interior and exterior wall soft ceramic tiles: Mix 3 kg of cement, 6 kg of dry sand, and 0.03 kg of hydroxymethyl cellulose evenly to obtain mixture A, and then mix mixture A with 2 kg of water evenly to obtain pure cement mortar.

[0071] Comparative Example 2

[0072] Preparation of special glue for interior and exterior wall soft ceramic tiles: Mix 3 kg of cement, 6 kg of dry sand, 0.005 kg of curing agent, 0.1 kg of redispersible latex powder, and 0.03 kg of hydroxymethyl cellulose evenly to obtain mixture A; mix 0.5 kg of epoxy resin and 2 kg of water evenly to obtain mixture B; mix mixture A and mixture B evenly to obtain polymer-modified cement mortar without adding alkenylsilane succinic anhydride.

[0073] Comparative Example 3

[0074] Preparation of special adhesive for interior and exterior wall soft tiles: Mix 3 kg of cement, 6 kg of dry sand, 0.005 kg of curing agent, 0.1 kg of redispersible latex powder, and 0.03 kg of carboxymethyl cellulose evenly to obtain mixture A; mix 0.5 kg of epoxy resin, 0.1 kg of alkenyl succinic anhydride, and 2 kg of water evenly to obtain mixture B; mix mixture A and mixture B evenly to obtain polymer-modified cement mortar with alkenyl succinic anhydride added.

[0075] Comparative Example 4

[0076] Preparation of special adhesive for interior and exterior wall soft tiles: Mix 3 kg of cement, 6 kg of dry stuff, 0.005 kg of curing agent, 0.1 kg of redispersible latex powder, and 0.03 kg of carboxymethyl cellulose evenly to obtain mixture A; mix 0.5 kg of epoxy resin, 0.1 kg of alkenyl succinic anhydride, 0.1 kg of silane coupling agent KH-570, and 2 kg of water evenly to obtain mixture B; mix mixture A and mixture B evenly to obtain polymer-modified cement mortar with silane coupling agent and alkenyl succinic anhydride added.

[0077] Performance test

[0078] The soft tiles used in the examples and comparative examples of this application for testing are self-made and of the same batch. The preparation method of the soft tiles is as follows: S1, mix alkoxysilane and trimethylmethoxysilane according to a weight ratio of 1:1:0.5, then add nano-silica sol with a particle size of 20 - 40 nm, and keep the temperature at 50 °C and rotate at 30 rpm for 2 h to obtain a polysiloxane prepolymer; S2, mix 4 kg of the polysiloxane prepolymer with 1 kg of self-crosslinking acrylic acid, and keep the temperature at 40 °C and rotate at 30 rpm for 2 h; S3, add 6 kg of BASF 7015 pure acrylic emulsion, 1 kg of toluene diisocyanate, 1.5 kg of tributyl citrate plasticizer, 0.3 kg of hydroxyethyl cellulose, 60 kg of 60 - 100 mesh colored quartz sand, and 10 kg of water, mix and stir, pour into a mold and dry and form at 80 °C to obtain the soft tiles for testing.

[0079] The test methods for the examples and comparative examples of this application are specifically as follows:

[0080] Test 1, Tensile bond strength: Conduct according to the detection method recorded in the standard JC / T 547 - 2017 "Ceramic tile adhesives". The higher the tensile bond strength, the higher the adhesion of the special adhesive.

[0081] Test 2, Transverse tensile deformation: Measure using a transverse tensile deformation detector. The larger the transverse tensile deformation, the higher the toughness of the special adhesive.

[0082] Test 3. Water impermeability: Coat the special glue on the surface of the soft tiles. After drying, immerse them in water for 2 hours, and then compare them with the soft tiles without the special glue coated. Observe the water absorption of the soft tiles and classify them into 1-5 grades according to the water absorption. The larger the grade, the better the water impermeability performance.

[0083] The test results are recorded in Table 2 below.

[0084] Table 2

[0085]

[0086]

[0087] It can be seen from Table 2 that compared with the pure cement mortar glue prepared in Comparative Example 1 and the ordinary polymer-modified cement mortar glue prepared in Comparative Example 2, after adding alkenyl silane succinic anhydride as a tackifier in this application, the obtained special glue has a higher bonding strength, and alkenyl silane succinic anhydride can increase the toughness of the special glue and improve its adaptability to the deformation of soft tiles.

[0088] Compared with Example 1, in Comparative Example 3, alkenyl succinic anhydride (ASA) was directly added. It can be seen that ASA has a certain tackifying effect and toughening effect, but the tackifying and toughening effects are limited; compared with Comparative Example 3, in Comparative Example 4, ASA and a silane coupling agent were added simultaneously. It can be seen that the bonding strength and toughness of the special glue have been significantly improved, indicating that the silane coupling agent can improve the interfacial bonding strength between the special glue and the organic soft tiles. However, compared with the special glue prepared in Example 1, the bonding performance of the special glue prepared in Comparative Example 4 still has a large room for improvement.

[0089] By comparing the test results of Examples 4-1, 4-6, and 4-7, it can be seen that compared with Example 4-1, the special glue prepared in Examples 4-6 and 4-7 has relatively poor bonding strength, while the toughness shows an upward trend. This shows that the longer the hydrocarbon chain length in alkenyl silane succinic anhydride, the more negative impact it will have on the bonding strength of the special glue, but it has a positive promoting effect on its toughening effect.

[0090] The above are only the preferred embodiments of this application. The protection scope of this application is not limited to the above embodiments. All technical solutions falling within the scope of the idea of this application belong to the protection scope of this application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of this application, several improvements and refinements should also be regarded as the protection scope of this application.

Claims

1. A special glue for interior and exterior wall soft tiles, characterized in that, It comprises components in the following parts by weight: 30 - 50 parts of cement, 60 - 100 parts of dry sand, 5 - 10 parts of epoxy resin, 0.05 - 0.1 part of curing agent, 1 - 3 parts of redispersible latex powder, 0.3 - 1 part of hydroxyethyl cellulose, 1 - 5 parts of alkenyl succinic anhydride, and 20 - 30 parts of water; the structural general formula of the alkenyl succinic anhydride is as shown in Formula Ⅰ: Among them, R0 is a straight-chain or branched-chain alkane with 0 to 15 carbon atoms, and R is a straight-chain or straight-chain alkane with 1 to 5 carbon atoms.

2. The special glue for interior and exterior wall soft ceramic tiles according to claim 1, characterized in that, In the structural general formula of the alkenyl succinic anhydride, R0 is a straight-chain or branched-chain alkane with 0 - 7 carbon atoms.

3. The special glue for interior and exterior wall soft ceramic tiles according to claim 2, characterized in that, In the structural general formula of the alkenyl succinic anhydride, R0 is a straight-chain alkane with 0 - 7 carbon atoms.

4. The special glue for interior and exterior wall soft ceramic tiles according to claim 1, characterized in that, The preparation method of the alkenyl succinic anhydride is: mixing alkenyl silane and maleic anhydride, heating and reacting for a period of time, and obtaining the product after separation and purification.

5. The special glue for interior and exterior wall soft ceramic tiles according to claim 4, characterized in that, The molar ratio of the alkenyl silane to maleic anhydride is (1 - 1.2):

1.

6. The special glue for interior and exterior wall soft ceramic tiles according to claim 1, characterized in that, The reaction temperature after mixing the alkenyl silane and maleic anhydride is 160 - 220 °C, and the reaction time is 4 - 8 h.

7. The special glue for interior and exterior wall soft ceramic tiles according to claim 1, characterized in that The cement is composed of one or both of portland cement and sulfoaluminate cement, and the particle size of the dry sand is 70 - 140 mesh.

8. The special glue for interior and exterior wall soft ceramic tiles according to claim 1, characterized in that, The redispersible latex powder is composed of one or more of acrylate latex powder, vinyl acetate-ethylene latex powder, styrene-acrylic latex powder, vinyl acetate-ethylene latex powder.

9. The special glue for interior and exterior wall soft ceramic tiles according to claim 1, characterized in that, The epoxy resin is selected from one or a mixture of bisphenol A epoxy resin, bisphenol F epoxy resin, polyphenol glycidyl ether epoxy resin, aliphatic glycidyl ether epoxy resin, glycidyl ester epoxy resin, glycidyl amine epoxy resin, cycloaliphatic epoxy resin, triglycidyl isocyanurate epoxy resin, hydantoin epoxy resin, and the curing agent is selected from one or a mixture of phenolic accelerators, imidazole accelerators, amine accelerators, and Lewis acid accelerators.

10. A method for preparing the special adhesive for interior and exterior wall soft ceramic tiles according to any one of claims 1-7, characterized in that, It includes the following steps: Mixing the cement, dry sand, curing agent, redispersible latex powder, and hydroxyethyl cellulose evenly to obtain mixture A; Mixing the epoxy resin, alkenyl succinic anhydride, and water evenly to obtain mixture B; Mixing mixture A and mixture B evenly to obtain the special adhesive for interior and exterior wall soft tiles.

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