High pressure and impact resistant epoxy modified microcement floor coating

Abstract

This invention relates to the field of coating technology and discloses a high-impact and high-compression-resistance epoxy-modified micro-cement floor coating. The coating is made primarily from epoxy resin and white special micro-particle cement, with reinforcing fillers, self-cleaning additives, titanium dioxide, quartz powder, corundum, etc., as auxiliary materials. The mixture is formed by blending epoxy resin and special cement, utilizing the high mechanical strength of epoxy resin, the concrete-like texture of special cement, and the high hardness of corundum raw materials to create a stable, impermeable micro-cement composite coating for artistic flooring. The addition of reinforcing fillers and self-cleaning additives not only effectively enhances the coating's impact resistance and compressive strength but also provides excellent self-cleaning properties, resulting in good durability.

Description

Technical Field

[0001] This invention relates to the field of coating technology, specifically to a high-compression-strength and impact-resistant epoxy-modified microcement floor coating. Background Technology

[0002] As people's pursuit of home decoration continues to improve, new types of decoration materials are emerging one after another. Among them, micro-cement coatings, as an emerging decorative material, are becoming increasingly popular due to their unique texture and decorative effect.

[0003] Microcement coating is a type of coating composed of water-based resin, inorganic binder, and various additives. Also known as "micro-particle cement," it is a type of micro-particle decorative concrete. Unlike traditional cement used as a building material, microcement is simply an inorganic coating used for surface decoration. Due to its special formula and process, microcement coating has super strong adhesion and coverage, and can adhere tightly to the surface of various materials. Therefore, microcement not only has the artistic texture of cement, but also has superior performance compared to traditional cement.

[0004] However, because microcement itself has a concrete structure, it develops numerous honeycomb-like pores after drying and shrinking. These pores easily absorb moisture in humid environments, leading to a decrease in the coating's impact resistance. Furthermore, oil spills easily adhere to the coating surface, forming indelible marks and affecting the aesthetic appeal. The presence of these pores also results in insufficient density of the microcement, making it susceptible to dents from everyday objects like stool legs and dropped items. When ordinary microcement is used as a flooring material, it severely impacts the user experience and compromises durability.

[0005] To address the shortcomings of using ordinary microcement as a flooring material, a high-compression-strength and impact-resistant epoxy-modified microcement flooring coating is provided by blending and modifying microcement with epoxy resin. Summary of the Invention

[0006] The purpose of this invention is to provide a high-pressure and impact-resistant epoxy-modified microcement floor coating, which solves the problem that the microcement coating has pores, resulting in poor impact resistance and compressive strength.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A high-compression and impact-resistant epoxy-modified micro-cement floor coating comprises, by weight, the following components: 10-45 parts epoxy resin, 15-30 parts white special micro-particle cement, 5-10 parts reinforcing filler, 3-6 parts self-cleaning additive, 0.5-3 parts titanium dioxide, 5-15 parts quartz powder, 15-30 parts corundum, 5-30 parts diluent, and 0.1-5 parts dispersant;

[0009] The reinforcing filler material is glass fiber whose surface has been successively modified with silicone oil and β-cyclodextrin;

[0010] The self-cleaning additive is a high molecular polymer containing fluororubber and siloxane block structures.

[0011] Furthermore, the coating is prepared by the following method:

[0012] Step 1: Weigh each raw material according to the weight proportions. First, add epoxy resin, white special micro-particle cement, reinforcing filler, self-cleaning additive, quartz powder, titanium dioxide and diluent into a high-speed shear mixer. Premix at a rate of 800-1000 r / min for 30-60 min, let stand for 20-30 min, and then filter through a 100-mesh screen to remove impurities.

[0013] The second step is to set the stirring speed to 1000-1500 r / min, continue stirring the mixture after it has been filtered through the filter screen for 10-15 min, then add the dispersant and stir for 10-20 min.

[0014] Furthermore, the epoxy resin is bisphenol A epoxy resin; the white special microparticle cement is nano-grade silicate white cement with a strength grade of PI52.5.

[0015] Furthermore, the reinforcing filler material is prepared by the following method:

[0016] Step 1: Place the glass fiber in a muffle furnace and heat it at 450-550℃ for 2-4 hours. After taking it out and letting it cool naturally, put it into a nitric acid solution, raise the temperature to 70-80℃, heat and stir for 4-6 hours, then separate, clean and remove impurities, vacuum dry, and collect the acidified glass fiber.

[0017] Specifically, the sizing agent on the surface of the glass fiber is removed by high-temperature calcination, and then acidified with nitric acid to expose a large number of silanol groups on the specific surface, forming acidified glass fiber.

[0018] Step 2: Add acidified glass fiber to N,N-dimethylformamide and ultrasonically disperse for 20-40 minutes to form a suspension. Then add epoxy silicone oil and tin catalyst to the suspension, start the heating program, control the heating rate at 2-3℃ / min, raise the temperature to 110-120℃, and maintain it for 1-2 hours under continuous stirring. Continue to add β-cyclodextrin, stir for 2-4 hours, cool down and discharge the material. The result is the reinforcing filler material.

[0019] Because the surface of acidified glass fiber contains abundant active silanol groups, it can undergo ring-opening with the epoxy groups in the epoxy group structure of epoxy silicone oil under the action of tin catalyst to form a silicone oil-modified glass fiber intermediate. Then, the epoxy groups at the other end of the silicone oil structure can be used to ring-open with β-cyclodextrin, thereby forming a reinforcing and filling material by modifying the glass fiber surface with β-cyclodextrin using epoxy silicone oil as a bridging agent.

[0020] Furthermore, in step one, the mass fraction of the nitric acid solution is 60-70%.

[0021] Furthermore, in step two, the number average molecular weight of the epoxy silicone oil-based silicone oil is 4000-5000.

[0022] Furthermore, in step two, the tin catalyst is stannous chloride.

[0023] Furthermore, the self-cleaning additive is prepared by the following method:

[0024] After filling the polymerization reactor with nitrogen and purging oxygen, add the carboxyl-terminated liquid fluororubber and tetrahydrofuran sequentially to the polymerization reactor. After stirring and dissolving, add the composite catalyst to the polymerization reactor and activate for 1-2 hours. Then, control the dropping rate to 5-10 mL / min and add bis[3-(trimethoxysilyl)propyl]ethylenediamine to the polymerization reactor while stirring continuously. After the addition is complete, stir at 50-60℃ for 6-9 hours to evaporate and remove the solvent. The resulting material is the self-cleaning additive.

[0025] Specifically, a composite catalyst is used to activate the carboxyl-terminated liquid fluororubber, causing the carboxyl-terminated liquid fluororubber to condense with the amine groups in the bis[3-(trimethoxysilyl)propyl]ethylenediamine structure. By controlling the addition rate of bis[3-(trimethoxysilyl)propyl]ethylenediamine, a continuous condensation reaction is promoted between them to form a high-molecular polymer type self-cleaning functional additive containing fluororubber and siloxane block structures linked by amide bonds.

[0026] Furthermore, the composite catalyst is a complex of N-hydroxysuccinimide and 1-ethyl-(3-dimethylaminopropyl)carbodiimide in a mass ratio of 1:2-3.

[0027] Furthermore, the diluent is dodecylphenol.

[0028] The beneficial effects of this invention are:

[0029] 1) This invention produces a stable and impermeable micro-cement composite coating for floor art coating by blending epoxy resin with special cement, utilizing the high mechanical strength of epoxy resin, the concrete texture effect of special cement, and the high hardness of corundum raw materials.

[0030] 2) This invention uses surface-modified glass fibers as reinforcing fillers. On one hand, the active hydroxyl groups generated by the ring-opening reaction can participate in the curing process of the epoxy resin, thereby achieving a strong bond between the glass fibers and the epoxy resin. This allows the glass fibers to act as a skeletal support within the epoxy resin, effectively maximizing their reinforcing effect and enabling the microcement coating to exhibit excellent impact resistance after curing. Furthermore, silicone oil has strong fluidity, allowing it to carry the glass fibers and embed them into the gaps between cement and corundum, among other solid materials. Meanwhile, the large-molecule cyclodextrin with its cavity structure creates an irregular, rough morphology on the glass fiber surface, filling the gaps between the glass fibers and cement, thus reducing the porosity of the cured microcement coating and resulting in stronger impact resistance and compressive strength.

[0031] 3) This invention prepares a self-cleaning functional additive based on a polymer. On one hand, due to the large number of amide bonds in its structure, it can interact with the epoxy resin matrix through hydrogen bonding and other processes, forming epoxy resin chains with a three-dimensional cross-linked network structure. This allows the epoxy resin to form a unified whole. Furthermore, due to its fluororubber and siloxane block structure, the siloxane block structure can interact with cement, effectively encapsulating cement particles and achieving a stable bond between the epoxy resin and cement particles. This results in a denser and more compact coating, exhibiting high impact and compressive strength. On the other hand, the fluororubber and siloxane block structure has extremely low surface energy, enabling the coating to achieve a superhydrophobic effect and self-cleaning properties. This prevents oil stains from forming indelible marks that affect the decorative aesthetics, thus effectively improving the durability of the coating.

[0032] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 Thermogravimetric analysis diagram of glass fiber and reinforcing filler material;

[0035] Figure 2 FT-IR plot of the additive for self-cleaning function. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1

[0038] A high-compression and impact-resistant epoxy-modified microcement floor coating comprises, by weight, the following components: 20 parts of E44 type epoxy resin, 15 parts of nano-grade silicate white cement with a strength grade of PI52.5, 5 parts of reinforcing filler, 3 parts of self-cleaning additive, 0.5 parts of titanium dioxide, 5 parts of quartz powder, 15 parts of corundum, 10 parts of dodecylphenol, and 0.2 parts of dispersant BYK-220S;

[0039] The coating is prepared by the following method:

[0040] Step 1: Weigh each raw material according to the weight proportions. First, add E44 epoxy resin, nano-grade silicate white cement, reinforcing filler, self-cleaning additive, quartz powder, titanium dioxide and dodecylphenol into a high-speed shear mixer. Premix at a rate of 800 r / min for 60 min, let stand for 20 min, and then filter through a 100-mesh screen to remove impurities.

[0041] The second step is to set the stirring speed to 1000 r / min, continue stirring the mixture after it has been filtered through the screen for 15 minutes, then add the dispersant BYK-220S and stir for 20 minutes.

[0042] Example 2

[0043] A high-compression and impact-resistant epoxy-modified microcement floor coating comprises the following components by weight: 40 parts of E44 type epoxy resin, 20 parts of nano-grade silicate white cement with a strength grade of PI52.5, 8 parts of reinforcing filler, 5 parts of self-cleaning additive, 1 part of titanium dioxide, 10 parts of quartz powder, 18 parts of corundum, 25 parts of dodecylphenol, and 3 parts of dispersant BYK-220S.

[0044] The coating is prepared by the following method:

[0045] Step 1: Weigh each raw material according to the weight proportions. First, add E44 epoxy resin, nano-grade silicate white cement, reinforcing filler, self-cleaning additive, quartz powder, titanium dioxide and dodecylphenol into a high-speed shear mixer. Premix at a rate of 1000r / min for 40min, let stand for 30min, and then filter through a 100-mesh filter to remove impurities.

[0046] The second step is to set the stirring speed to 1500 r / min, continue stirring the mixture after it has been filtered through the screen for 15 minutes, then add the dispersant BYK-220S and stir for another 15 minutes.

[0047] Example 3

[0048] A high-compression and impact-resistant epoxy-modified microcement floor coating comprises the following components by weight: 45 parts of E44 type epoxy resin, 30 parts of nano-grade silicate white cement with a strength grade of PI52.5, 10 parts of reinforcing filler, 6 parts of self-cleaning additive, 3 parts of titanium dioxide, 15 parts of quartz powder, 30 parts of corundum, 30 parts of dodecylphenol, and 5 parts of dispersant BYK-220S.

[0049] The coating is prepared by the following method:

[0050] Step 1: Weigh each raw material according to the weight proportions. First, add E44 epoxy resin, nano-grade silicate white cement, reinforcing filler, self-cleaning additive, quartz powder, titanium dioxide and dodecylphenol into a high-speed shear mixer. Premix at a rate of 1000r / min for 30min, let stand for 30min, and then filter through a 100-mesh filter to remove impurities.

[0051] The second step is to set the stirring speed to 1500 r / min, continue stirring the mixture after it has been filtered through the filter screen for 10 minutes, then add the dispersant BYK-220S and stir for another 10 minutes.

[0052] Comparative Example 1

[0053] A high-compression and impact-resistant epoxy-modified microcement floor coating comprises the following components by weight: 40 parts of E44 type epoxy resin, 20 parts of nano-grade silicate white cement with a strength grade of PI52.5, 8 parts of glass fiber, 5 parts of self-cleaning additive, 1 part of titanium dioxide, 10 parts of quartz powder, 18 parts of corundum, 25 parts of dodecylphenol, and 3 parts of dispersant BYK-220S.

[0054] The coating is prepared by the following method:

[0055] Step 1: Weigh each raw material according to the weight proportions. First, add E44 epoxy resin, nano-grade silicate white cement, glass fiber, self-cleaning additive, quartz powder, titanium dioxide and dodecylphenol into a high-speed shear mixer. Premix at a rate of 1000r / min for 40min, let stand for 30min, and then filter through a 100-mesh screen to remove impurities.

[0056] The second step is to set the stirring speed to 1500 r / min, continue stirring the mixture after it has been filtered through the screen for 15 minutes, then add the dispersant BYK-220S and stir for another 15 minutes.

[0057] Comparative Example 2

[0058] A high-compression and impact-resistant epoxy-modified microcement floor coating comprises the following components by weight: 40 parts of E44 type epoxy resin, 20 parts of nano-grade silicate white cement with a strength grade of PI52.5, 5 parts of self-cleaning additive, 1 part of titanium dioxide, 10 parts of quartz powder, 18 parts of corundum, 25 parts of dodecylphenol, and 3 parts of dispersant BYK-220S.

[0059] The coating is prepared by the following method:

[0060] Step 1: Weigh each raw material according to the weight proportions. First, add E44 epoxy resin, nano-grade silicate white cement, self-cleaning additive, quartz powder, titanium dioxide and dodecylphenol into a high-speed shear mixer. Premix at a rate of 1000r / min for 40min, let stand for 30min, and then filter through a 100-mesh screen to remove impurities.

[0061] The second step is to set the stirring speed to 1500 r / min, continue stirring the mixture after it has been filtered through the screen for 15 minutes, then add the dispersant BYK-220S and stir for another 15 minutes.

[0062] Comparative Example 3

[0063] A high-compression and impact-resistant epoxy-modified microcement floor coating comprises the following components by weight: 40 parts of E44 type epoxy resin, 20 parts of nano-grade silicate white cement with a strength grade of PI52.5, 8 parts of reinforcing filler, 1 part of titanium dioxide, 10 parts of quartz powder, 18 parts of corundum, 25 parts of dodecylphenol, and 3 parts of dispersant BYK-220S.

[0064] The coating is prepared by the following method:

[0065] Step 1: Weigh each raw material according to the weight proportions. First, add E44 epoxy resin, nano-grade silicate white cement, reinforcing filler, quartz powder, titanium dioxide and dodecylphenol into a high-speed shear mixer. Premix at a rate of 1000 r / min for 40 min, let stand for 30 min, and then filter through a 100-mesh screen to remove impurities.

[0066] The second step is to set the stirring speed to 1500 r / min, continue stirring the mixture after it has been filtered through the screen for 15 minutes, then add the dispersant BYK-220S and stir for another 15 minutes.

[0067] The reinforcing filler materials used in the above embodiments and comparative examples were prepared by the following method:

[0068] Step 1: Place 10g of glass fiber in a muffle furnace and heat it at 400℃ for 3 hours. After taking it out and letting it cool naturally, put it into 150mL of 65% nitric acid solution. Raise the temperature to 70℃, heat and stir for 6 hours, then separate, wash and remove impurities, vacuum dry, and collect the acidified glass fiber.

[0069] Step 2: Add 3.5g of acidified glass fiber to N,N-dimethylformamide and ultrasonically disperse for 30min to form a suspension. Then add 2.8g of epoxy silicone oil with a number average molecular weight of 5000 and 0.01g of stannous chloride to the suspension. Start the heating program and control the heating rate at 3℃ / min to raise the temperature to 120℃. Maintain the temperature for 2h under continuous stirring. Then add 4g of β-cyclodextrin and stir for 3h. After cooling, discharge the material. The result is the reinforcing filler material.

[0070] Figure 1 The thermogravimetric analysis (TGA) diagrams for glass fiber and reinforcing filler are shown. It can be seen that the glass fiber did not experience significant weight loss after high-temperature treatment. In contrast, the reinforcing filler showed significant weight loss at around 200℃ and 400℃. It is speculated that the weight loss at around 200℃ is due to the decomposition of cyclodextrin, while the weight loss at around 400℃ is due to the decomposition of silicone oil with higher bond energy.

[0071] The self-cleaning additives used in the above embodiments and comparative examples were prepared by the following method:

[0072] After filling the polymerization reactor with nitrogen and purging oxygen, 2.4 g of terminal carboxyl liquid fluororubber with a number average molecular weight of 4000 and tetrahydrofuran were added to the polymerization reactor in sequence. After stirring and dissolving, 0.01 g of N-hydroxysuccinimide and 0.03 g of 1-ethyl-(3-dimethylaminopropyl)carbodiimide were added to the polymerization reactor. After activation for 1 h, the dropping rate was controlled at 5 mL / min. 0.2 g of bis[3-(trimethoxysilyl)propyl]ethylenediamine was added to the polymerization reactor and stirred continuously. After the addition was completed, the mixture was stirred at 60 °C for 8 h. The solvent was evaporated and removed, and the product was discharged. The resulting product is the self-cleaning additive.

[0073] Figure 2 Analysis of the infrared (FT-IR) spectrum of the additive for this self-cleaning function revealed that the value at 3355 cm⁻¹... -1 The characteristic absorption peak appearing at 2923 cm⁻¹ is the OH stretching vibration peak. -1 and 2864cm -1 The characteristic absorption peak appearing at 1670 cm⁻¹ is the CH stretching vibration peak of methyl and ethyl groups. -1 The characteristic absorption peak appearing at 1046 cm⁻¹ is the C=O stretching vibration peak in the amide bond. -1 The characteristic absorption peak appearing at this point is the Si-O stretching vibration peak.

[0074] Comparative Example 4

[0075] An epoxy-modified microcement floor coating comprises, by weight, the following components: 40 parts of E44 type epoxy resin, 20 parts of nano-grade silicate white cement with a strength grade of PI52.5, 1 part of titanium dioxide, 10 parts of quartz powder, 18 parts of corundum, 25 parts of dodecylphenol, and 3 parts of dispersant BYK-220S.

[0076] The coating is prepared by the following method:

[0077] Step 1: Weigh each raw material according to the weight proportions. First, add E44 type epoxy resin, nano-grade silicate white cement, quartz powder, titanium dioxide and dodecylphenol into a high-speed shear mixer. Premix at a rate of 1000r / min for 40min, let stand for 30min, and then filter through a 100-mesh filter to remove impurities.

[0078] The second step is to set the stirring speed to 1500 r / min, continue stirring the mixture after it has been filtered through the screen for 15 minutes, then add the dispersant BYK-220S and stir for another 15 minutes.

[0079] 8 wt% of diethylenetriamine curing agent was added to the coatings prepared in Examples 1-3 and Comparative Examples 1-4. After stirring evenly, the coating was uniformly applied to the substrate in a 2 mm thickness. After drying and curing for 72 hours, the performance of the resulting coating was evaluated.

[0080] The compressive strength was tested according to standard HG / T 3829-2006; the impact resistance was tested according to GB / T 1732-2020; and the water contact angle was tested using an SDC-100 contact angle measuring instrument. The results are recorded in Table 1.

[0081] Table 1 - Performance Test Results

[0082] Compressive strength / MPa Impact resistance / kg·cm Water contact angle / ° Example 1 54.1 73.4 154 Example 2 54.4 73.8 155 Example 3 54.0 73.7 152 Comparative Example 1 49.8 67.1 150 Comparative Example 2 38.5 56.5 152 Comparative Example 3 46.2 65.4 107 Comparative Example 4 26.8 48.8 103

[0083] Analysis of the test results shows that the coating with the addition of reinforcing filler and self-cleaning additives has a compressive strength that is more than 50% higher and an impact resistance that is more than 30% higher than the coating without these additives. At the same time, the water contact angle is greater than 150°, exhibiting superhydrophobic properties and a self-cleaning effect.

[0084] Comparative Example 1, with its unmodified glass fibers, may have compatibility issues with the epoxy resin, making it difficult to effectively fill the pores. Therefore, both compressive strength and impact resistance showed a slight decrease. Comparative Example 2, without added glass fibers, showed a further decrease in compressive strength and impact resistance. Comparative Example 3, without self-cleaning additives, clearly showed a significant decrease in all properties and lacked superhydrophobic effects.

[0085] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-compression-strength and impact-resistant epoxy-modified microcement floor coating, characterized in that, By weight, it includes the following components: 10-45 parts epoxy resin, 15-30 parts white special micro-particle cement, 5-10 parts reinforcing filler, 3-6 parts self-cleaning additive, 0.5-3 parts titanium dioxide, 5-15 parts quartz powder, 15-30 parts corundum, 5-30 parts diluent, and 0.1-5 parts dispersant. The reinforcing filler material is glass fiber whose surface has been successively modified with silicone oil and β-cyclodextrin; The reinforcing filler material is prepared by the following method: Step 1: Place the glass fiber in a muffle furnace and heat it at 450-550℃ for 2-4 hours. After taking it out and letting it cool naturally, put it into a nitric acid solution, raise the temperature to 70-80℃, heat and stir for 4-6 hours, then separate, clean and remove impurities, vacuum dry, and collect the acidified glass fiber. Step 2: Add acidified glass fiber to N,N-dimethylformamide and ultrasonically disperse for 20-40 minutes to form a suspension. Then add epoxy silicone oil and tin catalyst to the suspension, start the heating program, control the heating rate at 2-3℃ / min, raise the temperature to 110-120℃, and maintain it for 1-2 hours under continuous stirring. Continue to add β-cyclodextrin, stir for 2-4 hours, cool down and discharge the material. The result is the reinforcing filler material. The self-cleaning additive is a high molecular polymer containing fluororubber and siloxane block structures; The self-cleaning additive is prepared by the following method: After filling the polymerization reactor with nitrogen and purging oxygen, add the carboxyl-terminated liquid fluororubber and tetrahydrofuran sequentially to the polymerization reactor. After stirring and dissolving, add the composite catalyst to the polymerization reactor and activate for 1-2 hours. Then, control the dropping rate to 5-10 mL / min and add bis[3-(trimethoxysilyl)propyl]ethylenediamine to the polymerization reactor while stirring continuously. After the addition is complete, stir at 50-60℃ for 6-9 hours to evaporate and remove the solvent. The resulting material is the self-cleaning additive.

2. The high-compression-strength and impact-resistant epoxy-modified microcement floor coating according to claim 1, characterized in that, The coating is prepared by the following method: Step 1: Weigh each raw material according to the weight proportions. First, add epoxy resin, white special micro-particle cement, reinforcing filler, self-cleaning additive, quartz powder, titanium dioxide and diluent into a high-speed shear mixer. Premix at a rate of 800-1000 r / min for 30-60 min, let stand for 20-30 min, and then filter through a 100-mesh screen to remove impurities. The second step is to set the stirring speed to 1000-1500 r / min, continue stirring the mixture after it has been filtered through the filter screen for 10-15 min, then add the dispersant and stir for 10-20 min.

3. A high-compression-strength and impact-resistant epoxy-modified microcement floor coating according to any one of claims 1-2, characterized in that, The epoxy resin is bisphenol A epoxy resin; the white special microparticle cement is nano-grade silicate white cement with a strength grade of PI52.

5.

4. The high-compression-strength and impact-resistant epoxy-modified microcement floor coating according to claim 1, characterized in that, In step one, the nitric acid solution has a mass fraction of 60-70%.

5. The high-compression-strength and impact-resistant epoxy-modified microcement floor coating according to claim 1, characterized in that, In step two, the number average molecular weight of the epoxy silicone oil-based silicone oil is 4000-5000.

6. The high-compression-strength and impact-resistant epoxy-modified microcement floor coating according to claim 1, characterized in that, In step two, the tin catalyst is stannous chloride.

7. The high-compression-strength and impact-resistant epoxy-modified microcement floor coating according to claim 1, characterized in that, The composite catalyst is a complex of N-hydroxysuccinimide and 1-ethyl-(3-dimethylaminopropyl)carbodiimide in a mass ratio of 1:2-3.

8. A high-compression-strength and impact-resistant epoxy-modified microcement floor coating according to any one of claims 1-2, characterized in that, The diluent is dodecylphenol.

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