Waterproof glue for building materials and preparation method thereof

Abstract

The present invention relates to the technical field of waterproof adhesives for building materials, the waterproof adhesives comprise a polymer emulsion, a catalyst, a filler and an auxiliary agent, the polymer emulsion comprises the following raw materials by weight: 18-22 g of styrene, 17-21 g of butyl acrylate, 2-6 g of methyl methacrylate, 0.9 g of acrylic acid, and 0.7 g of acrylamide, and the catalyst comprises the following raw materials by weight: 1.5 g of a mixed emulsifier, 1.5 g of an initiator, 1.5 g of an initiator, 1.5 g of an initiator, and the balance of water. The waterproof glue for the building materials comprises the following raw materials in parts by weight: 1g of a curing agent, 0.15 g of ammonium persulfate and 54g of deionized water, the filler comprises the following raw materials in parts by weight: 10g of quartz powder, 20g of an organosilicon monomer, 20g of talcum powder and 15g of silicate, and the auxiliary agent comprises the following raw materials in parts by weight: 3.2 g of a thickening agent, 1.3 g of a defoaming agent, 2.1 g of a leveling agent, 1.7 g of a wetting agent and 1.5 g of a mildew preventive. The waterproof glue prepared by the method has the advantages of no toxicity, no peculiar smell, no pollution, no corrosion, no combustion, no wiredrawing during coating, watertightness, high tensile strength, high elongation at break and the like.

Description

Technical Field

[0001] The invention relates to the field of waterproof glue for building materials, in particular to waterproof glue for building materials and a preparation method thereof. Background Art

[0002] At present, two types of waterproof materials have been developed to address the problem of building leakage, namely flexible waterproof materials (waterproof membranes, waterproof coatings, etc.) and rigid waterproof materials. Flexible waterproof materials are mainly laid or brushed on the outer surface of the building to form a hydrophobic layer. This type of waterproofing has the disadvantages of poor adhesion to the substrate and easy damage. Rigid waterproof materials are mainly made of cement, sand, etc. as raw materials, and a dense waterproof layer is formed on the surface of the building substrate. However, the current rigid waterproof materials have poor coordination with the substrate, and are prone to cracking of the waterproof layer when the substrate is deformed or vibrated.

[0003] For this reason, waterproof glue came into being. Building waterproof glue is a material used for waterproofing to prevent water from penetrating certain parts of a building. It is generally used in kitchens, bathrooms, balconies, basements, etc. Most of the building waterproof glues in the prior art have poor water impermeability and low tensile strength, and are easy to fall off during use. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The object of the present invention is to provide a waterproof glue for building materials and a preparation method thereof, so as to solve the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a waterproof glue for building materials, comprising a polymer emulsion, a catalyst, a filler and an auxiliary agent, characterized in that: the polymer emulsion comprises the following raw materials in weight proportion: styrene 18-22g, butyl acrylate 17-21g, methyl methacrylate 2-6g, acrylic acid 0.9g, acrylamide: 0.7g, the catalyst comprises the following raw materials in weight proportion: mixed emulsifier 1.5g, ammonium persulfate 0.15g and deionized water 54g, the filler comprises the following raw materials in weight proportion: quartz powder 10g, silicone monomer 20g, talcum powder 20g and silicate 15g, the auxiliary agent comprises the following raw materials in weight proportion: thickener 3.2g, defoamer 1.3g, leveling agent 2.1g, wetting agent 1.7g and mildewproof agent 1.5g.

[0008] Through the above technical scheme, butyl acrylate is used, which has the characteristics of small particle size, multi-purpose, excellent performance and wide applicability. Methyl methacrylate is used, which can make the surface of the glue have the characteristics of brightness, flexibility, strong adhesion, water resistance and weather resistance when it is liquid.

[0009] Preferably, the polymer emulsion accounts for 30-40% of the waterproof glue, the catalyst accounts for 15-30% of the waterproof glue, and the filler accounts for 20-35% of the waterproof glue.

[0010] Through the above technical solution, acrylic acid is used to make the waterproof glue have excellent gloss and transparency, good water resistance and weather resistance, and strong alkali resistance.

[0011] Preferably, the mixed emulsifier comprises sodium lauryl sulfate and OP-10, wherein the mass ratio of sodium lauryl sulfate to OP-10 is 2:1.

[0012] Preferably, the model of the organosilicon monomer is JH-V171, and it is a colorless transparent liquid.

[0013] Preferably, the raw materials in the auxiliary agent also contain 0.8 g of preservative.

[0014] Through the above technical solution, the waterproof glue can be preserved for a longer period of time, which prevents the waterproof glue from being corroded by moisture in the air and increases the service life of the waterproof glue.

[0015] A method for preparing a waterproof adhesive for building materials comprises the following steps:

[0016] Step 1: Preparation of raw materials: weigh appropriate additives and fillers according to the above raw material composition to adjust the performance of the waterproof glue;

[0017] Step 2: Mixing of raw materials: Pour polymer emulsion, catalyst and filler into a mixing barrel and mix to ensure that all components are evenly dispersed;

[0018] Step 3: Preparation of waterproof glue: heat and dissolve the mixed raw materials, add auxiliary agents, shake well and cool to make waterproof glue;

[0019] Step 4: Filter the prepared waterproof glue through filter cloth to remove impurities, and then put it into a glass container for packaging.

[0020] Preferably, before mixing the raw materials, the stirring barrel needs to be kept dry and clean. After the polymer emulsion and the catalyst are all added to the stirring barrel, the mixture is stirred with a stirrer at a stirring speed of 120-130 r / min for 1-1.5 h to obtain an initial raw material solution.

[0021] Preferably, the raw material initial liquid is stirred again with a stirrer at a stirring speed of 50-60 r / min, and fillers are added into the stirring barrel at the same time, and stirring is continued for 0.5-1 h to obtain the raw material intermediate liquid.

[0022] Preferably, the liquid of the raw material is poured into a beaker, placed on an electric heater and heated at a temperature of 60°-100° for 0.5 h. While heating, an auxiliary agent is added and stirred manually with a glass rod to finally obtain a waterproof glue.

[0023] Through the above technical solution, the preparation rate of waterproof glue can be accelerated and the preparation quality can be improved.

[0024] Preferably, when filtering the waterproof glue, the filter cloth has a precision of 100-200 meshes, and the filter cloth is made of natural fiber. The waterproof glue in the glass container should be stored in a cool and dry environment at a storage temperature of 8-28° C. and kept in a sealed container.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The waterproof glue prepared by the present invention under the condition that the mass blending ratio of polymer emulsion, catalyst and filler is 4:3:3.5 has the strongest comprehensive performance. The waterproof glue prepared by the present invention adopts butyl acrylate, which has the characteristics of small particle size, multi-purpose, excellent performance and wide applicability. Methyl methacrylate is adopted, which can make the surface of the glue have the characteristics of brightness, flexibility, strong adhesion, water resistance and weather resistance when it is liquid. Acrylic acid is adopted, so that the waterproof glue has excellent gloss and transparency, good water resistance and weather resistance, and strong alkali resistance. Finally, under the action of catalyst and auxiliary agent, the prepared waterproof glue has better impermeability, higher tensile strength and larger elongation at break. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a schematic flow chart of a method for preparing a waterproof adhesive for building materials;

[0028] Figure 2 The present invention is a schematic diagram showing a formula embodiment of a waterproof adhesive for building materials. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 2 The present invention provides a technical solution of waterproof glue for building materials and a preparation method thereof:

[0031] A waterproof glue for building materials comprises a polymer emulsion, a catalyst, a filler and an auxiliary agent, wherein the polymer emulsion comprises the following raw materials in proportion by weight: 18-22 g of styrene, 17-21 g of butyl acrylate, 2-6 g of methyl methacrylate, 0.9 g of acrylic acid, and 0.7 g of acrylamide; the catalyst comprises the following raw materials in proportion by weight: 1.5 g of a mixed emulsifier, 0.15 g of ammonium persulfate and 54 g of deionized water; the filler comprises the following raw materials in proportion by weight: 10 g of quartz powder, 20 g of an organic silicon monomer, 20 g of talcum powder and 15 g of a silicate; and the auxiliary agent comprises the following raw materials in proportion by weight: 3.2 g of a thickener, 1.3 g of a defoamer, 2.1 g of a leveling agent, 1.7 g of a wetting agent and 1.5 g of a mildewproofing agent.

[0032] It should be noted that styrene is made into emulsion through emulsion polymerization. Emulsion polymerization refers to a heterogeneous polymerization process in which monomers are dispersed in a medium under the action of an emulsifier and a water-soluble initiator is added under mechanical stirring or oscillation.

[0033] It should be noted that butyl acrylate is prepared into an emulsion by an emulsion polymerization method. Emulsion polymerization is a process in which a monomer is dispersed in a medium under the action of an emulsifier, a water-soluble initiator is added, and a heterogeneous polymerization reaction is carried out by mechanical stirring or oscillation.

[0034] It should be noted that emulsion polymerization is a process in which monomers are dispersed in a medium under the action of an emulsifier, a water-soluble initiator is added, and a heterogeneous polymerization reaction is carried out through mechanical stirring or oscillation.

[0035] It should be noted that acrylic emulsion is a milky white or nearly transparent viscous liquid, which is mainly composed of copolymerization of pure acrylic ester monomers.

[0036] It should be noted that acrylamide emulsion is prepared by dispersion method or inverse emulsion polymerization method. It is a form of polyacrylamide liquid and has the characteristics of a solid flocculant. It adsorbs suspended solid particles in water through polar groups in the molecular chain, bridges the particles or electrically neutralizes them to form large floccules.

[0037] It should be noted that thickeners can increase the consistency of adhesives, making them easier to apply and construct; defoamers can inhibit the generation of bubbles during the production and use of adhesives; leveling agents can improve the leveling properties of adhesives, making it easier to form a smooth surface; wetting agents can reduce the surface tension of adhesives, making it easier to wet the substrate; and mildew inhibitors can inhibit the growth of microorganisms and prevent the adhesives from getting damp and moldy.

[0038] Furthermore, the polymer emulsion accounts for 30-40% of the waterproof glue, the catalyst accounts for 15-30% of the waterproof glue, and the filler accounts for 20-35% of the waterproof glue.

[0039] It should be noted that the waterproof glue prepared under the condition that the mass blending ratio of polymer emulsion, catalyst and filler is 4:3:3.5 has the strongest comprehensive performance. The waterproof glue prepared in the present invention adopts butyl acrylate, which has the characteristics of small particle size, multi-purpose, excellent performance and wide applicability. The use of methyl methacrylate can make the surface of the glue have the characteristics of brightness, flexibility, strong adhesion, water resistance and weather resistance when it is liquid. The use of acrylic acid makes the waterproof glue have excellent gloss and transparency, good water resistance and weather resistance, and strong alkali resistance.

[0040] Furthermore, the mixed emulsifier includes sodium lauryl sulfate and OP-10, wherein the mass ratio of sodium lauryl sulfate to OP-10 is 2:1.

[0041] It should be noted that polymer emulsion is the main component of waterproof glue. It can provide good adhesion and elasticity, and effectively resist the penetration and erosion of water molecules. At the same time, polymer emulsion can also form a dense waterproof film to further improve the waterproof effect. Secondly, additives play an important auxiliary role in waterproof glue. They can improve the construction performance of waterproof glue, increase adhesion, adjust the drying speed, etc. Finally, fillers play an enhancing and reinforcing role in waterproof glue.

[0042] Furthermore, the model of the organosilicon monomer is JH-V171, and it is a colorless transparent liquid.

[0043] It should be noted that the use of silicone monomers can improve the waterproof performance of waterproof glue. Since silicone monomers have lower surface energy, the waterproof performance of waterproof glue can be significantly improved, effectively preventing water penetration and erosion; enhance adhesion. Silicone monomers have good adhesion to various materials, which can make the waterproof glue tightly bonded to the substrate and not easy to fall off, thereby improving the adhesion of the waterproof glue; improve weather resistance. Silicone monomers have good weather resistance, which can make the waterproof glue maintain stable performance under various climatic conditions and is not easy to age, discolor, or powderize; increase durability. Silicone monomers have excellent durability, which can greatly extend the service life of waterproof glue and reduce maintenance costs. It is environmentally friendly and safe. Silicone monomers are non-toxic, odorless, non-flammable, and do not pollute the environment. They meet modern environmental protection requirements and are safe and reliable when used.

[0044] Furthermore, the raw materials in the auxiliary agent also contain 0.8 g of preservative.

[0045] It should be noted that the waterproof glue can be preserved for a longer period of time, thereby preventing the waterproof glue from being corroded by moisture in the air and increasing the service life of the waterproof glue.

[0046] Embodiment one:

[0047] A method for preparing a waterproof adhesive for building materials comprises the following steps:

[0048] Step 1: Preparation of raw materials. The polymer emulsion includes the following raw materials in weight proportion: styrene 18-22g, butyl acrylate 17-21g, methyl methacrylate 2-6g, acrylic acid 0.9g, acrylamide: 0.7g, the catalyst includes the following raw materials in weight proportion: mixed emulsifier 1.5g, ammonium persulfate 0.15g and deionized water 54g, the filler includes the following raw materials in weight proportion: quartz powder 10g, silicone monomer 20g, talcum powder 20g and silicate 15g, the auxiliary agent includes the following raw materials in weight proportion: thickener 3.2g, defoamer 1.3g, leveling agent 2.1g, wetting agent 1.7g and mildewproof agent 1.5g. According to the above raw material composition, appropriate auxiliary agents and fillers are weighed respectively to adjust the performance of the waterproof glue;

[0049] Step 2: Mixing of raw materials: Pour polymer emulsion, catalyst and filler into a mixing bucket for mixing to ensure uniform dispersion of each component (polymer emulsion accounts for 30% of the waterproof glue, catalyst accounts for 30% of the waterproof glue, and filler accounts for 35% of the waterproof glue);

[0050] Step 3: Preparation of waterproof glue: heat and dissolve the mixed raw materials, add auxiliary agents, shake well and cool to make waterproof glue;

[0051] Step 4: Filter the prepared waterproof glue through filter cloth to remove impurities, and then put it into a glass container for packaging

[0052] Furthermore, before mixing the raw materials, the mixing barrel must be kept dry and clean. After the polymer emulsion and catalyst are all added to the mixing barrel, the mixture is stirred with an agitator at a speed of 120-130 r / min for 1-1.5 h to obtain the initial raw material solution.

[0053] Furthermore, the raw material initial liquid is stirred again with a stirrer at a stirring speed of 50-60 r / min, and fillers are added into the stirring barrel at the same time, and stirring is continued for 0.5-1 h to obtain the raw material intermediate liquid.

[0054] Further, the liquid of the raw material is poured into a beaker and placed on an electric heater for heating at a temperature of 60°-100° for 0.5 h. While heating, an auxiliary agent is added and stirred manually with a glass rod to finally obtain a waterproof glue.

[0055] Furthermore, when filtering the waterproof glue, the precision of the filter cloth is 100-200 meshes, and the material of the filter cloth is natural fiber. The waterproof glue in the glass container should be stored in a cool and dry place at a storage temperature of 8-28° C. and kept in a sealed state.

[0056] Embodiment two:

[0057] A method for preparing a waterproof adhesive for building materials comprises the following steps:

[0058] Step 1: Preparation of raw materials. The polymer emulsion includes the following raw materials in weight proportion: styrene 18-22g, butyl acrylate 17-21g, methyl methacrylate 2-6g, acrylic acid 0.9g, acrylamide: 0.7g, the catalyst includes the following raw materials in weight proportion: mixed emulsifier 1.5g, ammonium persulfate 0.15g and deionized water 54g, the filler includes the following raw materials in weight proportion: quartz powder 10g, silicone monomer 20g, talcum powder 20g and silicate 15g, the auxiliary agent includes the following raw materials in weight proportion: thickener 3.2g, defoamer 1.3g, leveling agent 2.1g, wetting agent 1.7g and mildewproof agent 1.5g. According to the above raw material composition, appropriate auxiliary agents and fillers are weighed respectively to adjust the performance of the waterproof glue;

[0059] Step 2: Mixing of raw materials: Pour polymer emulsion, catalyst and filler into a mixing bucket for mixing to ensure uniform dispersion of each component (polymer emulsion accounts for 35% of the waterproof glue, catalyst accounts for 30% of the waterproof glue, and filler accounts for 35% of the waterproof glue);

[0060] Step 3: Preparation of waterproof glue: heat and dissolve the mixed raw materials, add auxiliary agents, shake well and cool to make waterproof glue;

[0061] Step 4: Filter the prepared waterproof glue through filter cloth to remove impurities, and then put it into a glass container for packaging

[0062] Furthermore, before mixing the raw materials, the mixing barrel must be kept dry and clean. After the polymer emulsion and catalyst are all added to the mixing barrel, the mixture is stirred with an agitator at a speed of 120-130 r / min for 1-1.5 h to obtain the initial raw material solution.

[0063] Furthermore, the raw material initial liquid is stirred again with a stirrer at a stirring speed of 50-60 r / min, and fillers are added into the stirring barrel at the same time, and stirring is continued for 0.5-1 h to obtain the raw material intermediate liquid.

[0064] Further, the liquid of the raw material is poured into a beaker and placed on an electric heater for heating at a temperature of 60°-100° for 0.5 h. While heating, an auxiliary agent is added and stirred manually with a glass rod to finally obtain a waterproof glue.

[0065] Furthermore, when filtering the waterproof glue, the precision of the filter cloth is 100-200 meshes, and the material of the filter cloth is natural fiber. The waterproof glue in the glass container should be stored in a cool and dry place at a storage temperature of 8-28° C. and kept in a sealed state.

[0066] Embodiment three:

[0067] A method for preparing a waterproof adhesive for building materials comprises the following steps:

[0068] Step 1: Preparation of raw materials. The polymer emulsion includes the following raw materials in weight proportion: styrene 18-22g, butyl acrylate 17-21g, methyl methacrylate 2-6g, acrylic acid 0.9g, acrylamide: 0.7g, the catalyst includes the following raw materials in weight proportion: mixed emulsifier 1.5g, ammonium persulfate 0.15g and deionized water 54g, the filler includes the following raw materials in weight proportion: quartz powder 10g, silicone monomer 20g, talcum powder 20g and silicate 15g, the auxiliary agent includes the following raw materials in weight proportion: thickener 3.2g, defoamer 1.3g, leveling agent 2.1g, wetting agent 1.7g and mildewproof agent 1.5g. According to the above raw material composition, appropriate auxiliary agents and fillers are weighed respectively to adjust the performance of the waterproof glue;

[0069] Step 2: Mixing of raw materials: Pour polymer emulsion, catalyst and filler into a mixing bucket for mixing to ensure uniform dispersion of each component (polymer emulsion accounts for 40% of the waterproof glue, catalyst accounts for 30% of the waterproof glue, and filler accounts for 35% of the waterproof glue);

[0070] Step 3: Preparation of waterproof glue: heat and dissolve the mixed raw materials, add auxiliary agents, shake well and cool to make waterproof glue;

[0071] Step 4: Filter the prepared waterproof glue through filter cloth to remove impurities, and then put it into a glass container for packaging

[0072] Furthermore, before mixing the raw materials, the mixing barrel must be kept dry and clean. After the polymer emulsion and catalyst are all added to the mixing barrel, the mixture is stirred with an agitator at a speed of 120-130 r / min for 1-1.5 h to obtain the initial raw material solution.

[0073] Furthermore, the raw material initial liquid is stirred again with a stirrer at a stirring speed of 50-60 r / min, and fillers are added into the stirring barrel at the same time, and stirring is continued for 0.5-1 h to obtain the raw material intermediate liquid.

[0074] Further, the liquid of the raw material is poured into a beaker and placed on an electric heater for heating at a temperature of 60°-100° for 0.5 h. While heating, an auxiliary agent is added and stirred manually with a glass rod to finally obtain a waterproof glue.

[0075] Furthermore, when filtering the waterproof glue, the precision of the filter cloth is 100-200 meshes, and the material of the filter cloth is natural fiber. The waterproof glue in the glass container should be stored in a cool and dry place at a storage temperature of 8-28° C. and kept in a sealed state.

[0076] Experimental analysis:

[0077] The comparative example uses ethyl acetate waterproof glue commonly used in building materials on the market. Figure 2 It can be seen that the waterproof glue prepared by the present invention in the condition that the mass blending ratio of polymer emulsion, catalyst and filler is 4:3:3.5 has the strongest comprehensive performance. The waterproof glue prepared in the present invention adopts butyl acrylate, which has the characteristics of small particle size, multi-purpose, excellent performance and wide applicability. The use of methyl methacrylate can make the surface of the glue have the characteristics of brightness, flexibility, strong adhesion, water resistance and weather resistance when it is liquid. The use of acrylic acid makes the waterproof glue have excellent gloss and transparency, good water resistance and weather resistance, and strong alkali resistance. Finally, under the action of catalysts and auxiliary agents, the prepared waterproof glue has better impermeability, higher tensile strength and greater elongation at break.

[0078] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A waterproof adhesive for building materials, comprising a polymer emulsion, a catalyst, a filler and an auxiliary agent, characterized in that: The polymer emulsion comprises the following raw materials in weight proportion: 18-22g styrene, 17-21g butyl acrylate, 2-6g methyl methacrylate, 0.9g acrylic acid, and 0.7g acrylamide; the catalyst comprises the following raw materials in weight proportion: 1.5g mixed emulsifier, 0.15g ammonium persulfate and 54g deionized water; the filler comprises the following raw materials in weight proportion: 10g quartz powder, 20g organosilicon monomer, 20g talcum powder and 15g silicate; the auxiliary agent comprises the following raw materials in weight proportion: 3.2g thickener, 1.3g defoamer, 2.1g leveling agent, 1.7g wetting agent and 1.5g mildewproof agent.

2. The waterproof glue for building materials and the preparation method thereof according to claim 1, characterized in that: The polymer emulsion accounts for 30-40% of the waterproof glue, the catalyst accounts for 15-30% of the waterproof glue, and the filler accounts for 20-35% of the waterproof glue.

3. The waterproof glue for building materials and the preparation method thereof according to claim 1, characterized in that: The mixed emulsifier includes sodium lauryl sulfate and OP-10, wherein the mass ratio of sodium lauryl sulfate to OP-10 is 2:

1.

4. The waterproof glue for building materials and the preparation method thereof according to claim 1, characterized in that: The model of the organosilicon monomer is JH-V171, and it is a colorless transparent liquid.

5. The waterproof glue for building materials and the preparation method thereof according to claim 1, characterized in that: The raw materials in the auxiliary agent also contain 0.8g of preservative.

6. A method for preparing the waterproof adhesive for building materials according to any one of claims 1 to 5, characterized in that: The steps include: Step 1: Preparation of raw materials: weigh appropriate additives and fillers according to the above raw material composition to adjust the performance of the waterproof glue; Step 2: Mixing of raw materials: Pour polymer emulsion, catalyst and filler into a mixing barrel and mix to ensure that all components are evenly dispersed; Step 3: Preparation of waterproof glue: heat and dissolve the mixed raw materials, add auxiliary agents, shake well and cool to make waterproof glue; Step 4: Filter the prepared waterproof glue through filter cloth to remove impurities, and then put it into a glass container for packaging.

7. The method for preparing a waterproof adhesive for building materials according to claim 6, characterized in that: Before mixing the raw materials, the stirring barrel needs to be kept dry and clean. After the polymer emulsion and the catalyst are all added into the stirring barrel, the mixture is stirred with a stirrer at a stirring speed of 120-130 r / min for 1-1.5 h to obtain the initial raw material solution.

8. The method for preparing a waterproof adhesive for building materials according to claim 7, characterized in that: Use a stirrer to stir the initial raw material liquid again at a stirring speed of 50-60r / min. At the same time, add fillers into the stirring barrel and continue stirring for 0.5-1h to obtain the raw material intermediate liquid.

9. The method for preparing a waterproof adhesive for building materials according to claim 6, characterized in that: The liquid of the raw materials is poured into a beaker, and placed on an electric heater for heating at a temperature of 60°-100° for 0.5 h. While heating, an auxiliary agent is added and stirred manually with a glass rod to finally obtain a waterproof glue.

10. The method for preparing a waterproof adhesive for building materials according to claim 6, characterized in that: When filtering the waterproof glue, the precision of the filter cloth is 100-200 meshes, and the material of the filter cloth is natural fiber. The waterproof glue in the glass container should be stored in a cool and dry place at a storage temperature of 8-28° C. and kept in a sealed state.

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