UHPC waterborne epoxy floor paint and preparation method thereof

Abstract

The application discloses HUPC water-based epoxy floor paint and a preparation method thereof, and belongs to the technical field of floor paint preparation. The HUPC water-based epoxy floor paint is obtained by sequentially forming UHPC super-performance concrete components, adhesive layer material components and water-based epoxy floor paint components from bottom to top in a mass ratio of 150-250:0.3-1:3-10, and has a microporous structure, allows water vapor to permeate but liquid medium to not pass through, and releases the pressure of water vapor in the UHPC super-performance concrete layer, thereby avoiding problems such as film bubbling and peeling, has the advantages of high strength, good adhesion and permeation resistance, solves the defects of current floor paint, such as easy sanding and pulverization, insufficient strength, delamination caused by false clear light and poor flatness, and has a good application prospect.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of floor paint preparation, and particularly relates to a UHPC water-based epoxy floor paint and a preparation method thereof. BACKGROUND

[0002] The epoxy resin paint has the characteristics of good adhesion to concrete, low volume shrinkage, good water and oil resistance, chemical corrosion resistance, high hardness, high wear resistance, superior adhesion, and the like, and is beautiful and elegant in color, resistant to staining, convenient to maintain, and superior in overall comprehensive performance, and is widely used in modern buildings such as factories, shopping malls, garages, home decoration, and the like, and has an important position in the floor industry.

[0003] The epoxy floor paint includes solvent-based epoxy floor paint and water-based epoxy floor paint. The traditional solvent-based epoxy floor paint contains a large amount of volatile organic solvents, which can cause certain harm to human health and the environment; in addition, when applied to a surface with heavy moisture, the paint film has poor air permeability, and is prone to bubbling, peeling and other adverse phenomena. With the development of water-based paint technology and the improvement of people's environmental awareness, it is inevitable for water-based epoxy floor paint to replace solvent-based epoxy floor paint. However, the commonly used water-based epoxy floor paint still has the problems of poor wear resistance, weather resistance and thermal stability, and poor compatibility between liquid epoxy resin and water-based amine curing agent, and the mixing is not uniform during use. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a UHPC water-based epoxy floor paint and a preparation method thereof, so as to solve the technical problem of insufficient strength and thermal stability of the existing floor paint.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a UHPC water-based epoxy floor paint, which comprises independently packaged UHPC super high performance concrete component, adhesive material component and water-based epoxy floor paint component with a mass ratio of 150-250:0.3-1:3-10.

[0006] The raw materials used in the UHPC ultra-high performance concrete components, by weight, include: 5-10 parts cement, 2-3 parts silica fume, 1-3 parts admixture, 0.5-1.5 parts active material, 2-4 parts quartz powder, 10-15 parts quartz sand, 1-3 parts steel fiber, and 0.05-0.15 parts water-reducing agent; the raw materials used in the tack coat components, by weight, include: 0.5-1.5 parts epoxy resin, 1-3 parts curing agent, and 3-5 parts emulsifier. The raw materials used in the water-based epoxy floor paint components, by weight, include: 5-8 parts epoxy resin and 0.5-1.5 parts curing agent; the admixture is obtained by mixing finely ground quartz sand, limestone, and hard slag in the same weight ratio; the active material is obtained by mixing silica fume, fly ash, and granulated blast furnace slag in the same weight ratio; the water-reducing agent is calcium lignosulfonate; the curing agent is a latent curing agent for epoxy resin; and the emulsified asphalt is anionic emulsified asphalt.

[0007] The structure of the UHPC waterborne epoxy floor coating, from bottom to top, consists of: a UHPC ultra-high performance concrete layer, an adhesive layer, and a waterborne epoxy floor coating layer. The UHPC ultra-high performance concrete layer is composed of UHPC ultra-high performance concrete components, the adhesive layer is composed of adhesive layer material components, and the waterborne epoxy floor coating layer is composed of waterborne epoxy floor coating components.

[0008] Based on the above technical solution, the present invention can be further improved as follows:

[0009] Furthermore, the raw materials used in the UHPC ultra-high performance concrete component, by weight, include: 8 parts cement, 2.5 parts silica fume, 2 parts admixture, 1 part active material, 3 parts quartz powder, 12 parts quartz sand, 2 parts steel fiber, and 0.1 parts water-reducing agent; the raw materials used in the tack coat component, by weight, include: 1 part epoxy resin, 2 parts curing agent, and 4 parts emulsified asphalt; the raw materials used in the water-based epoxy floor paint component, by weight, include: 6 parts epoxy resin and 1 part curing agent.

[0010] Furthermore, the raw materials used in the UHPC ultra-high performance concrete component, by weight, include: 5 parts cement, 3 parts silica fume, 3 parts admixture, 0.5 parts active material, 4 parts quartz powder, 10 parts quartz sand, 3 parts steel fiber, and 0.15 parts water-reducing agent; the raw materials used in the tack coat component, by weight, include: 0.5 parts epoxy resin, 3 parts curing agent, and 3 parts emulsified asphalt; the raw materials used in the water-based epoxy floor paint component, by weight, include: 8 parts epoxy resin and 0.5 parts curing agent.

[0011] Furthermore, the raw materials used in the UHPC ultra-high performance concrete component, by weight, include: 10 parts cement, 2 parts silica fume, 1 part admixture, 1.5 parts active material, 2 parts quartz powder, 15 parts quartz sand, 1 part steel fiber, and 0.05 parts water-reducing agent; the raw materials used in the tack coat component, by weight, include: 1.5 parts epoxy resin, 1 part curing agent, and 5 parts emulsified asphalt; the raw materials used in the water-based epoxy floor paint component, by weight, include: 5 parts epoxy resin and 1.5 parts curing agent.

[0012] The present invention also discloses a method for preparing UHPC waterborne epoxy floor coating, including the following steps: mixing cement, silica fume, admixtures, active materials, quartz powder, quartz sand, steel fibers and water-reducing agent in proportion, then adding water at a water-cement ratio of 0.14-0.2, mixing well, and obtaining UHPC ultra-high performance concrete components.

[0013] Epoxy resin, curing agent and emulsified asphalt are mixed in proportion, then 20wt% water is added and mixed well to obtain the tack coat material components.

[0014] Epoxy resin and curing agent are mixed in a certain proportion, and then 20wt% water is added and mixed well to obtain the water-based epoxy floor paint components.

[0015] The structure of UHPC waterborne epoxy floor coating, from bottom to top, consists of: UHPC ultra-high performance concrete layer, adhesive layer, and waterborne epoxy floor coating layer. The UHPC ultra-high performance concrete layer is composed of UHPC ultra-high performance concrete components, the adhesive layer is composed of adhesive layer material components, and the waterborne epoxy floor coating layer is composed of waterborne epoxy floor coating components.

[0016] Furthermore, the thickness of the UHPC ultra-high performance concrete layer is 15-25mm, the thickness of the adhesive layer is 0.3-0.5mm, and the thickness of the water-based epoxy floor paint layer is 3-8mm.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. This invention uses water as a dispersion medium, resulting in a low content of volatile organic compounds (VOCs) in the floor coating system and minimal environmental pollution. The cured UHPC waterborne epoxy floor coating has a microporous structure that allows water vapor to permeate while preventing the passage of liquid media. This releases the pressure of water vapor in the UHPC ultra-high performance concrete layer, thereby avoiding problems such as coating blistering and peeling. It has the advantages of high strength, good adhesion, and impermeability, and solves the shortcomings of current floor coatings, such as easy sanding and powdering, insufficient strength, delamination due to false clearing, and poor flatness.

[0019] 2. UHPC ultra-high performance concrete has the advantages of high strength, high density, ultra-long service life, high surface smoothness, not easy to be contaminated, low porosity, and easy cleaning and maintenance. Water-based epoxy floor paint has the advantages of being green and environmentally friendly, anti-slip and wear-resistant, fireproof and moisture-proof, good adhesion, impermeability, and easy to clean. Attached Figure Description

[0020] Figure 1 A comparison chart of the pull-out strength of the material at different temperatures;

[0021] Figure 2 A comparison of the shear strength of the material at different temperatures;

[0022] Figure 3 This is a schematic diagram of non-permeation curing.

[0023] Figure 4 This is a schematic diagram of the penetration and curing process;

[0024] Figure 5 This is an electron microscope image of the unaged sample.

[0025] Figure 6 This is an electron microscope image after 12 days of aging;

[0026] Figure 7 This is a diagram showing the variation of the bearing load. Detailed Implementation

[0027] The specific embodiments of the present invention are described below to facilitate understanding of the invention by those skilled in the art. Unless otherwise specified, specific conditions are applied according to conventional conditions or the manufacturer's recommendations. Reagents or instruments whose manufacturers are not specified are all commercially available conventional products. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various modifications are obvious as long as they fall within the spirit and scope of the invention as defined and determined by the appended claims. All inventions utilizing the concept of this invention are protected.

[0028] In the following examples, the admixtures used are finely ground quartz sand, limestone and hard slag mixed in the same mass ratio, and the active materials are silica fume, fly ash and granulated blast furnace slag mixed in the same mass ratio.

[0029] Example 1

[0030] A UHPC waterborne epoxy floor coating comprises separately packaged UHPC ultra-high performance concrete components, adhesive layer components, and waterborne epoxy floor coating components in a mass ratio of 200:0.5:5.

[0031] The raw materials used in the UHPC ultra-high performance concrete component, by weight, include: 8 parts C80 cement, 2.5 parts silica fume, 2 parts admixture, 1 part active material, 3 parts quartz powder, 12 parts quartz sand, 2 parts steel fiber, and 0.1 parts calcium lignosulfonate; the raw materials used in the tack coat component, by weight, include: 1 part epoxy resin, 2 parts E-44 curing agent, and 4 parts anionic emulsified asphalt; the raw materials used in the water-based epoxy floor paint component, by weight, include: 6 parts epoxy resin and 1 part E-44 curing agent.

[0032] This embodiment also discloses a method for preparing UHPC waterborne epoxy floor coating, including the following steps: mixing C80 cement, silica fume, admixtures, active materials, quartz powder, quartz sand, steel fiber, and calcium lignosulfonate in a certain proportion, then adding water according to the water-cement ratio, and mixing well to obtain UHPC ultra-high performance concrete components; mixing epoxy resin, E-44 curing agent, and anionic emulsified asphalt in a certain proportion, then adding water according to the water-cement ratio, and mixing well to obtain tack coat material components; mixing epoxy resin and E-44 curing agent in a certain proportion, then adding water according to the water-cement ratio, and mixing well to obtain waterborne epoxy floor coating components;

[0033] The structure of UHPC waterborne epoxy floor coating, from bottom to top, consists of: a 20mm thick UHPC ultra-high performance concrete layer, a 0.4mm thick adhesive layer, and a 5mm thick waterborne epoxy floor coating layer. The UHPC ultra-high performance concrete layer is composed of UHPC ultra-high performance concrete components, the adhesive layer is composed of adhesive material components, and the waterborne epoxy floor coating layer is composed of waterborne epoxy floor coating components.

[0034] Example 2

[0035] A UHPC waterborne epoxy floor coating comprises separately packaged UHPC ultra-high performance concrete components, tack coat components, and waterborne epoxy floor coating components in a mass ratio of 150:0.3:10.

[0036] The raw materials used in the UHPC ultra-high performance concrete component, by weight, include: 5 parts C80 cement, 3 parts silica fume, 3 parts admixture, 0.5 parts active material, 4 parts quartz powder, 10 parts quartz sand, 3 parts steel fiber, and 0.15 parts calcium lignosulfonate; the raw materials used in the tack coat component, by weight, include: 0.5 parts epoxy resin, 3 parts E-51 curing agent, and 3 parts anionic emulsified asphalt; the raw materials used in the water-based epoxy floor paint component, by weight, include: 8 parts epoxy resin and 0.5 parts E-51 curing agent.

[0037] The preparation method in this embodiment is the same as that in Example 1;

[0038] The structure of UHPC waterborne epoxy floor coating, from bottom to top, consists of: a 15mm thick UHPC ultra-high performance concrete layer, a 0.3mm thick adhesive layer, and an 8mm thick waterborne epoxy floor coating layer. The UHPC ultra-high performance concrete layer is composed of UHPC ultra-high performance concrete components, the adhesive layer is composed of adhesive material components, and the waterborne epoxy floor coating layer is composed of waterborne epoxy floor coating components.

[0039] Example 3

[0040] A UHPC waterborne epoxy floor coating comprises separately packaged UHPC ultra-high performance concrete components, tack coat components, and waterborne epoxy floor coating components in a mass ratio of 250:1:3.

[0041] The raw materials used in the UHPC ultra-high performance concrete component, by weight, include: 10 parts C80 cement, 2 parts silica fume, 1 part admixture, 1.5 parts active material, 2 parts quartz powder, 15 parts quartz sand, 1 part steel fiber, and 0.05 parts calcium lignosulfonate; the raw materials used in the tack coat component, by weight, include: 1.5 parts epoxy resin, 1 part E-51 curing agent, and 5 parts anionic emulsified asphalt; the raw materials used in the water-based epoxy floor paint component, by weight, include: 5 parts epoxy resin and 1.5 parts E-51 curing agent.

[0042] The preparation method in this embodiment is the same as that in Example 1;

[0043] The structure of UHPC waterborne epoxy floor coating, from bottom to top, consists of: a 25mm thick UHPC ultra-high performance concrete layer, a 0.5mm thick adhesive layer, and a 3mm thick waterborne epoxy floor coating layer. The UHPC ultra-high performance concrete layer is composed of UHPC ultra-high performance concrete components, the adhesive layer is composed of adhesive material components, and the waterborne epoxy floor coating layer is composed of waterborne epoxy floor coating components.

[0044] Experimental Example

[0045] Using emulsified asphalt and modified asphalt as control groups, the following experiments were conducted with the UHPC waterborne epoxy floor coating prepared in Example 1.

[0046] 1. Adhesion

[0047] Testing procedure: Pull-out tests were conducted on three bonding materials (emulsified asphalt, modified asphalt, and UHPC waterborne epoxy floor paint) at two different interfaces of concrete and steel using a universal testing machine, and the test values ​​were recorded.

[0048] The results are shown in Table 1.

[0049] Table 1 Comparison of Adhesion Data

[0050]

[0051] Data analysis: As shown in Table 1, the pull-out strength of waterborne epoxy floor coating at both high and low temperatures is significantly higher than that of modified asphalt and emulsified asphalt, indicating that the bonding strength of waterborne epoxy asphalt on concrete and steel substrates is superior to that of modified asphalt.

[0052] 2. High temperature stability

[0053] Testing procedure: Using a universal testing machine, pull-out and shear tests were conducted on three bonding materials at two different interfaces of concrete and steel, and the test values ​​were recorded.

[0054] like Figure 1 and Figure 2 As shown, waterborne epoxy floor coatings exhibit significantly improved tensile and shear strengths at high temperatures compared to modified and emulsified asphalt. Furthermore, the bond strength of waterborne epoxy asphalt at 60℃ remains superior to that of modified asphalt at room temperature. The tensile and shear strengths of waterborne epoxy floor coatings at cement interfaces are also much higher than those at steel interfaces, indicating that they are more suitable for cement interfaces.

[0055] 3. Permeability

[0056] The test method refers to GB / T38050-2019, "Determination of Permeability of Emulsified Asphalt".

[0057] A schematic diagram of penetration curing is shown below. Figure 3 and Figure 4 As shown in the figure, it can be seen that the permeability of emulsified asphalt and waterborne epoxy resin is less than that of waterborne epoxy asphalt.

[0058] 4. Flexibility and low-temperature stability

[0059] The test method refers to the "Test Procedure for Asphalt-based Asphalt Mixtures in Highway Engineering" JTGE20-2011.

[0060] The results are shown in Table 2.

[0061] Table 2 Flexibility Data

[0062]

[0063] Data analysis: As can be seen from Table 2, the applicable radius of curvature for waterborne epoxy asphalt is smaller than that of the other two types, indicating that waterborne epoxy asphalt has better flexibility. The excellent flexibility reflects the deformation compliance and fatigue resistance of waterborne epoxy asphalt, ensuring its long-lasting adhesion on various base layers.

[0064] 5. Corrosion resistance

[0065] Experimental conditions:

[0066] (1) Salt resistance: Soak in 3% sodium chloride solution for 15 days;

[0067] (2) Alkali resistance: Soak in a saturated calcium hydroxide solution for 15 days;

[0068] (3) Oil resistance: Immersion in 120# gasoline (120h);

[0069] Test procedure: The three materials were soaked in 3% sodium chloride solution, saturated calcium hydroxide solution and No. 120 gasoline for 15 days respectively, and then their surfaces were observed for any abnormalities.

[0070] The results are shown in Table 3.

[0071] Table 3 Comparison of Corrosion Resistance Data

[0072]

[0073] Data Analysis: Table 3 shows that waterborne epoxy asphalt has good salt and alkali resistance. Although its oil resistance decreases after 15 days, this does not affect its use since the waterborne epoxy asphalt is not used in high oil content environments.

[0074] 6. Weather resistance

[0075] The time required to simulate one year of natural aging outdoors in the aging test chamber is 3.2 × 10⁻⁶. 5 s (approximately 3.7 days). Parameter settings are shown in Table 4.

[0076] Table 4 Parameter settings for the aging stage

[0077]

[0078] Testing process: Simulated aging experiments were conducted using an aging test chamber under different light, temperature and humidity conditions.

[0079] The results are shown in Table 5.

[0080] Table 5 Comparison of Aging Data

[0081]

[0082] Note: The flexibility at 25℃ (radius of curvature) is 0.5mm.

[0083] Data analysis: As can be seen from Table 5, the pull-out strength of waterborne epoxy asphalt after 12 days of aging is still higher than that of modified asphalt before aging.

[0084] like Figure 5 and Figure 6 As shown, aged waterborne epoxy asphalt has fewer bubbles and pits compared to modified asphalt.

[0085] 7. Penetration and reinforcement effect

[0086] like Figure 7 As shown, the penetration strength of the specimens reinforced with water-based epoxy asphalt was significantly improved, indicating that water-based epoxy asphalt material has a significant effect on surface reinforcement of the pavement, and the penetration strength increases with the increase of water-based epoxy asphalt content.

Claims

1. A UHPC waterborne epoxy floor coating, characterized in that, The UHPC waterborne epoxy floor coating comprises UHPC ultra-high performance concrete components, tack coat components, and waterborne epoxy floor coating components, which are packaged separately and have a mass ratio of 150-250:0.3-1:3-10. The raw materials used in the UHPC ultra-high performance concrete components, by weight, include: 5-10 parts cement, 2-3 parts silica fume, 1-3 parts admixture, 0.5-1.5 parts active material, 2-4 parts quartz powder, 10-15 parts quartz sand, 1-3 parts steel fiber, and 0.05-0.15 parts water-reducing agent; the raw materials used in the tack coat material components, by weight, include: 0.5-1.5 parts epoxy resin, 1-3 parts curing agent, and 3-5 parts emulsion. The water-based epoxy floor paint components include, by weight, 5-8 parts epoxy resin and 0.5-1.5 parts curing agent; the admixture is obtained by mixing finely ground quartz sand, limestone, and hard slag in the same weight ratio; the active material is obtained by mixing silica fume, fly ash, and granulated blast furnace slag in the same weight ratio; the water-reducing agent is calcium lignosulfonate; the curing agent is a latent curing agent for epoxy resin; and the emulsified asphalt is anionic emulsified asphalt. The structure of the UHPC waterborne epoxy floor coating, from bottom to top, consists of: a UHPC ultra-high performance concrete layer, an adhesive layer, and a waterborne epoxy floor coating layer. The UHPC ultra-high performance concrete layer is composed of UHPC ultra-high performance concrete components, the adhesive layer is composed of adhesive layer material components, and the waterborne epoxy floor coating layer is composed of waterborne epoxy floor coating components.

2. The UHPC waterborne epoxy floor coating according to claim 1, characterized in that, The raw materials used in the UHPC ultra-high performance concrete component, by weight, include: 8 parts cement, 2.5 parts silica fume, 2 parts admixture, 1 part active material, 3 parts quartz powder, 12 parts quartz sand, 2 parts steel fiber, and 0.1 parts water-reducing agent; the raw materials used in the tack coat component, by weight, include: 1 part epoxy resin, 2 parts curing agent, and 4 parts emulsified asphalt; the raw materials used in the water-based epoxy floor paint component, by weight, include: 6 parts epoxy resin and 1 part curing agent.

3. The UHPC waterborne epoxy floor coating according to claim 1, characterized in that, The raw materials used in the UHPC ultra-high performance concrete component, by weight, include: 5 parts cement, 3 parts silica fume, 3 parts admixture, 0.5 parts active material, 4 parts quartz powder, 10 parts quartz sand, 3 parts steel fiber, and 0.15 parts water-reducing agent; the raw materials used in the tack coat component, by weight, include: 0.5 parts epoxy resin, 3 parts curing agent, and 3 parts emulsified asphalt; the raw materials used in the water-based epoxy floor paint component, by weight, include: 8 parts epoxy resin and 0.5 parts curing agent.

4. The UHPC waterborne epoxy floor coating according to claim 1, characterized in that, The raw materials used in the UHPC ultra-high performance concrete component, by weight, include: 10 parts cement, 2 parts silica fume, 1 part admixture, 1.5 parts active material, 2 parts quartz powder, 15 parts quartz sand, 1 part steel fiber, and 0.05 parts water-reducing agent; the raw materials used in the tack coat component, by weight, include: 1.5 parts epoxy resin, 1 part curing agent, and 5 parts emulsified asphalt; the raw materials used in the water-based epoxy floor paint component, by weight, include: 5 parts epoxy resin and 1.5 parts curing agent.

5. The method for preparing the UHPC waterborne epoxy floor coating according to any one of claims 1-4, characterized in that, The process includes the following steps: mixing cement, silica fume, admixtures, active materials, quartz powder, quartz sand, steel fibers, and water-reducing agent in a certain proportion, then adding water at a water-cement ratio of 0.14-0.2, mixing thoroughly, and obtaining the UHPC ultra-high performance concrete components. Epoxy resin, curing agent and emulsified asphalt are mixed in proportion, and then 20wt% water is added and mixed well to obtain the adhesive layer material composition. Epoxy resin and curing agent are mixed in a certain proportion, and then 20wt% water is added and mixed well to obtain the water-based epoxy floor paint components. The structure of the UHPC waterborne epoxy floor coating, from bottom to top, consists of: a UHPC ultra-high performance concrete layer, an adhesive layer, and a waterborne epoxy floor coating layer. The UHPC ultra-high performance concrete layer is composed of UHPC ultra-high performance concrete components, the adhesive layer is composed of adhesive layer material components, and the waterborne epoxy floor coating layer is composed of waterborne epoxy floor coating components.

6. The preparation method of UHPC waterborne epoxy floor coating according to claim 5, characterized in that, The thickness of the UHPC ultra-high performance concrete layer is 15-25mm, the thickness of the adhesive layer is 0.3-0.5mm, and the thickness of the water-based epoxy floor paint layer is 3-8mm.

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