Adhesive for large tiles and manufacturing method thereof

Abstract

The invention relates to an adhesive for large tiles and a manufacturing method thereof. The adhesive is prepared from the following materials in parts by weight: 300 to 400 parts of cement, 500 to 600 parts of aggregate, 20 to 30 parts of metakaolin, 25 to 35 parts of rubber powder, 8.5 to 11.5 parts of an early strength agent, 3 to 4 parts of a water-retaining agent, 0.6 to 0.8 part of a thickening agent and 2.5 to 3.5 parts of an anti-cracking agent. Through mutual cooperation of metakaolin and other components, the overall bonding strength of the ceramic tile adhesive is remarkably enhanced, so that the ceramic tile adhesive is especially suitable for construction operation of large ceramic tiles.

Description

Technical Field

[0001] The present application relates to the field of building materials, and in particular to an adhesive for large bricks and tiles and a manufacturing method thereof. Background Art

[0002] Tile adhesive is mainly used to stick ceramic tiles, tiles, floor tiles and other decorative materials. It is widely used in interior and exterior walls, floors, bathrooms, kitchens, and building decoration places. Its main features are high bonding strength, water resistance, freeze-thaw resistance, good aging resistance and convenient construction. It is an ideal adhesive material.

[0003] However, in order to enhance the bonding strength, the existing preparation methods of adhesives for large brick tiles are usually costly and inconvenient to construct.

[0004] Therefore, there is a need for an adhesive for large tile tiles with enhanced performance and reduced cost and a method for making the same. Summary of the invention

[0005] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0006] On the one hand, the present application provides an adhesive for large brick tiles, which is prepared from the following materials, which include, by weight, 300-400 parts of cement, 500-600 parts of aggregate, 20-30 parts of kaolin, 25-35 parts of glue powder, 8.5-11.5 parts of early strength agent, 3-4 parts of water retention agent, 0.6-0.8 parts of thickener and 2.5-3.5 parts of anti-cracking agent.

[0007] As used in this application, the term "large brick tile" refers to a tile size of 1800 3600 mm、1200 2400 mm, 900 1800 mm, 750 1500mm、800 Tiles of 2400 mm etc.

[0008] In one embodiment, the material includes 350 parts by weight of cement, 578 parts by weight of aggregate, 25 parts by weight of kaolin, 30 parts by weight of rubber powder, 10 parts by weight of early strength agent, 0.7 parts by weight of thickener, 3.5 parts by weight of water retaining agent and 3 parts by weight of anti-cracking agent.

[0009] In one embodiment, the cement is one or more of gray cement and white cement.

[0010] In one embodiment, the aggregate is selected from one or more of machine-made sand, quartz sand and river sand.

[0011] In one embodiment, the aggregate has a particle size of 0.1-0.45 mm.

[0012] In one embodiment, the anti-cracking agent is wood fiber.

[0013] In one embodiment, the rubber powder is one or more of a terpolymer rubber powder of vinyl acetate, ethylene and higher fatty acid vinyl ester, a copolymer rubber powder of vinyl acetate and higher fatty acid vinyl ester, and a terpolymer rubber powder of vinyl acetate, acrylate and higher fatty acid vinyl ester.

[0014] In one embodiment, the early strength agent is one or more of lithium carbonate, calcium formate, and sodium sulfate.

[0015] In one embodiment, the water retaining agent is cellulose ether.

[0016] In one embodiment, the viscosity of the cellulose ether is 10000-100000 mPa·s.

[0017] In one embodiment, the cellulose ether is selected from one or more of methyl cellulose ether, hydroxypropyl methyl cellulose ether and carboxymethyl cellulose ether.

[0018] In one embodiment, the thickener is starch ether.

[0019] In one embodiment, the starch ether is selected from one or more of cationic starch, anionic starch, hydroxypropyl starch phosphate, hydroxypropyl glycerol distarch and hydroxyalkyl starch.

[0020] In another aspect, the present application provides a method for manufacturing the above-mentioned adhesive, comprising the following steps: The metakaolin, rubber powder, early strength agent, water-retaining agent, thickener and anti-cracking agent are mixed and stirred evenly to obtain a premix; The adhesive is obtained by mixing and stirring cement, aggregate and the premix evenly.

[0021] The present invention significantly enhances the overall bonding strength of the tile adhesive by combining metakaolin with other components, and is therefore particularly suitable for the construction of large tiles.

[0022] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application are described in detail below. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0024] Unless otherwise specified, the materials used in the following examples and comparative examples are all commercially available.

[0025] The cement used in the following examples and comparative examples is purchased from Anhui Conch Cement Co., Ltd. The main component of the cement is calcium silicate, specification P.II52.5, loss on ignition is less than or equal to 3.5%, sulfur trioxide is less than or equal to 3.5%, magnesium oxide is less than or equal to 5.0%, chloride ion is less than or equal to 0.06%, and the specific surface area is greater than or equal to 300m 2 / kg.

[0026] The aggregate used is machine-made sand purchased from Suzhou Baomite Building Materials (Suzhou) Co., Ltd. The particle size of the machine-made sand is 0.1~0.45mm, the mud content is less than or equal to 3.0%, the mud block content is less than or equal to 0.2%, the flake particles are less than or equal to 10%, and the apparent density is not less than 2500kg / m³.

[0027] The metakaolin used was purchased from Shanghai Shenhua New Material Technology Co., Ltd., model K1400SW.

[0028] The rubber powder used is purchased from Wacker Chemical (Nanjing) Co., Ltd. The specification of the rubber powder is 5010N, the ash content is 8.0%-12.0%, the bulk density is 400-700g / L, and the pH is 6.5-9.5.

[0029] The water-retaining agent used is hydroxypropyl methylcellulose ether purchased from Shanghai Huiguang Fine Chemical Co., Ltd. The model of the hydroxypropyl methylcellulose ether is GMC1163, and the viscosity is 40000-50000 mPa·s.

[0030] The early strength agent used is calcium formate purchased from Hubei Changmaoxin Industrial Co., Ltd. The total calcium content of the calcium formate is greater than or equal to 30%, the moisture content is ≤0.5%, and the pH value is 6.0-8.0.

[0031] The thickener used is starch ether purchased from Guangdong Longhu Technology of Jiangsu Province. The starch ether has a viscosity of 600-1600 mPa·s (5% aqueous solution), a pH of 9-11, a particle size of <350 microns, and a moisture content of <5%.

[0032] The anti-cracking agent used is wood fiber purchased from Shanghai-Ougong Engineering Materials Co., Ltd. The model of the wood fiber is H-500, and the fiber length is 500 microns.

[0033] The mineral powder used in Comparative Example 2 was purchased from Tangshan Polar Bear Building Materials Co., Ltd., and the particle size of the mineral powder was 200-300 meshes.

[0034] Example 1 Crushing and screening the machine-made sand to 0.1-0.45mm; 25 parts by weight of metakaolin, 30 parts by weight of rubber powder, 3.5 parts by weight of hydroxypropyl methylcellulose ether, 10 parts by weight of calcium formate, 0.7 parts by weight of starch ether and 3 parts by weight of wood fiber are sequentially added into a blender for premixing, and mixed and stirred evenly to obtain a premix; Then, 350 parts by weight of cement, 578 parts by weight of machine-made sand and 72 parts by weight of premix are measured in sequence and added into a mixer for mixing. After mixing and stirring evenly, an adhesive for large bricks and tiles is obtained.

[0035] Example 2 Crushing and screening the machine-made sand to 0.1-0.45mm; 30 parts by weight of metakaolin, 25 parts by weight of rubber powder, 3.5 parts by weight of hydroxypropyl methylcellulose ether, 10 parts by weight of calcium formate, 0.7 parts by weight of starch ether and 3 parts by weight of wood fiber are sequentially added into a mixer for premixing, and mixed and stirred evenly to obtain a premix; Then, 350 parts by weight of cement, 578 parts by weight of machine-made sand and 72 parts by weight of premix are measured in sequence and added into a mixer for mixing. After mixing and stirring evenly, an adhesive for large bricks and tiles is obtained.

[0036] Comparative Example 1 Crushing and screening the machine-made sand to 0.1-0.45mm; 30 parts by weight of rubber powder, 3.5 parts by weight of hydroxypropyl methylcellulose ether, 10 parts by weight of calcium formate, 0.7 parts by weight of starch ether and 3 parts by weight of wood fiber are sequentially added into a mixer for premixing, and mixed and stirred evenly to obtain a premix; 350 parts by weight of cement, 603 parts by weight of machine-made sand and 47 parts by weight of premix are measured in sequence and added into a mixer for mixing. After mixing and stirring evenly, a cement-based large brick tile adhesive without adding kaolin is obtained.

[0037] Comparative Example 2 Crushing and screening the machine-made sand to 0.1-0.45mm; 25 parts by weight of metakaolin, 30 parts by weight of rubber powder, 3.5 parts by weight of hydroxypropyl methylcellulose ether, 10 parts by weight of calcium formate, 0.7 parts by weight of starch ether and 3 parts by weight of wood fiber are sequentially added into a blender for premixing, and mixed and stirred evenly to obtain a premix; Then, 270 parts by weight of cement, 578 parts by weight of machine-made sand, 80 parts by weight of mineral powder and 72 parts by weight of premix are measured in sequence and added into a mixer for mixing. After mixing and stirring evenly, an adhesive for large bricks and ceramic tiles is obtained.

[0038] Performance Testing The adhesive for large brick tiles prepared in each embodiment and comparative example was mixed with water at a mass ratio of 1:0.23; after being mixed evenly, the test was performed according to the Chinese building materials industry standard JC / T 547-2017 "Ceramic Tile Adhesive". The test results are shown in Table 1 below.

[0039] Table 1

[0040] From the results in Table 1, the physical properties of the adhesives for large brick tiles in Examples 1 and 2 of the present application meet the technical requirements for C2 products in JC / T547-2017. From the strength results, the tensile bonding strength of the adhesive in Comparative Example 1 without the addition of metakaolin is significantly reduced, which may be due to the lack of metakaolin and the inability to obtain the effect of metakaolin blocking the capillary channels in the tile adhesive structure. Comparative Example 2 replaces cement with a portion of mineral powder while adding metakaolin. With the addition of active mineral powder and metakaolin, although the cost is further reduced, the overall bonding strength result is lower than the bonding strength of Example 1 with only metakaolin added.

[0041] Examples 1 and 2 of the present application utilize the excellent bonding effect of kaolin in combination with other components, which not only enhances the 28d bonding strength of the adhesive for large tiles, but also significantly helps maintain the water immersion strength due to its impermeability. Moreover, its ability to reduce the chloride ion diffusion coefficient also has a significant effect on enhancing the corrosion resistance of the tile adhesive and inhibiting alkali efflux.

[0042] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An adhesive for large brick tiles, characterized in that: The adhesive is prepared from the following materials, which include, by weight, 300-400 parts of cement, 500-600 parts of aggregate, 20-30 parts of metakaolin, 25-35 parts of rubber powder, 8.5-11.5 parts of early strength agent, 3-4 parts of water retaining agent, 0.6-0.8 parts of thickener and 2.5-3.5 parts of anti-cracking agent.

2. The adhesive according to claim 1, wherein the materials include 350 parts by weight of cement, 578 parts by weight of aggregate, 25 parts by weight of metakaolin, 30 parts by weight of rubber powder, 10 parts by weight of an early strength agent, 0.7 parts by weight of a thickener, 3.5 parts by weight of a water retaining agent, and 3 parts by weight of an anti-cracking agent.

3. The adhesive according to claim 1 or 2, wherein the cement is one or more of gray cement and white cement.

4. The adhesive according to claim 1 or 2, wherein the aggregate is selected from one or more of machine-made sand, quartz sand and river sand; optionally, the particle size of the aggregate is 0.1-0.45 mm.

5. The adhesive according to claim 1 or 2, wherein the anti-cracking agent is wood fiber.

6. The adhesive according to claim 1 or 2, wherein the rubber powder is one or more of a terpolymer rubber powder of vinyl acetate, ethylene and higher fatty acid vinyl ester, a copolymer rubber powder of vinyl acetate and higher fatty acid vinyl ester, and a terpolymer rubber powder of vinyl acetate, acrylate and higher fatty acid vinyl ester.

7. The adhesive according to claim 1 or 2, wherein the early strength agent is one or more of lithium carbonate, calcium formate, and sodium sulfate.

8. The adhesive according to claim 1 or 2, wherein the water retaining agent is cellulose ether; optionally, the viscosity of the cellulose ether is 10000-100000 mPa·s; optionally, the cellulose ether is selected from one or more of methyl cellulose ether, hydroxypropyl methyl cellulose ether and carboxymethyl cellulose ether.

9. The adhesive according to claim 1 or 2, wherein the thickener is a starch ether; optionally, the starch ether is selected from one or more of cationic starch, anionic starch, hydroxypropyl starch phosphate, hydroxypropyl glycerol distarch and hydroxyalkyl starch.

10. A method for manufacturing an adhesive according to any one of claims 1 to 9, characterized in that: The steps include: The metakaolin, rubber powder, early strength agent, water-retaining agent, thickener and anti-cracking agent are mixed and stirred evenly to obtain a premix; The adhesive is obtained by mixing and stirring cement, aggregate and the premix evenly.

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