Waterproof coating with flexibility, surface rigidity and wear resistance

Abstract

The invention relates to the technical field of preparation of waterproof coatings, in particular to a wear-resistant waterproof coating with both flexibility and surface rigidity, and a preparation method of the waterproof coating comprises the following steps: sequentially adding preparation raw materials and stirring; determining stirring at a first stirring speed or stirring at an initial stirring speed based on whether the sound frequency fluctuates or whether high-frequency noise is generated in the stirring process; determining to stir at a second stirring speed or sequentially adding the emulsion GT203, the slurry, the black slurry and the blue slurry based on whether the material generates an abnormal phenomenon of bubble generation or whether the material generates an irregular vortex in the stirring process at the first stirring speed; reducing the rotating speed of the stirring paddle to a second stirring speed, and determining to continuously stir at the second stirring speed or slowly adding the dissolved thickening agent based on the number of bubbles overflowing in the stirring process at the second stirring speed and the rising speed; according to the method, the performance of the waterproof coating is improved by improving the analysis accuracy of the preparation process of the waterproof coating.

Description

Technical Field

[0001] The invention relates to the technical field of waterproof coating preparation, and in particular to a waterproof coating having both flexibility and surface rigidity and wear resistance. Background Art

[0002] In the existing market, most waterproof coating products can only focus on one aspect of performance. For example, some waterproof coatings with flexibility as the main feature can adapt to the deformation of building structures well, but they perform poorly in terms of surface wear resistance and are easily worn under the influence of the external environment, which in turn affects the waterproof effect; and some waterproof coatings that emphasize surface rigidity and wear resistance are not flexible enough due to the limitations of their formula and preparation process. When the building structure undergoes a slight deformation, they may crack and cannot effectively prevent water; in addition, with the development of the construction industry, the requirements for environmental protection and construction convenience are also increasing. Traditional waterproof coatings may use some raw materials that are harmful to the environment during the preparation process, or the preparation process is complicated, which increases the difficulty and cost of construction. Therefore, it is of great practical significance to develop a waterproof coating that takes into account flexibility and surface rigidity and wear resistance while meeting the requirements of environmental protection and construction convenience.

[0003] For example, Chinese patent application publication number: CN115851114A discloses a waterproof coating for flexible cork surface and its preparation method, which belongs to the technical field of composite material preparation. The waterproof coating of the present invention is composed of 20 to 100 parts of polyetherimide, 10 to 50 parts of polystyrene, and 300 to 1000 parts of diluent according to the weight ratio. The preparation method of the waterproof coating of the present invention comprises the following steps: taking polyetherimide, polystyrene, and diluent according to the weight ratio; dissolving polyetherimide and polystyrene in the diluent respectively, and then mixing the two solutions together, and obtaining the waterproof coating after stirring evenly. The invention comprehensively utilizes the flexibility and film-forming properties of polyetherimide and the waterproof properties of polystyrene to prepare a waterproof coating that can be sprayed. The coating can be used for waterproof protection of flexible cork surface, and has good film-forming property, flexibility, wear resistance, and thermal insulation and flame retardant properties.

[0004] However, the prior art has problems such as single performance of waterproof coatings and inaccurate analysis of the waterproof coating preparation process, resulting in low performance of the prepared waterproof coatings. Summary of the invention

[0005] To this end, the present invention provides a waterproof coating that has both flexibility and surface rigidity and wear resistance, so as to overcome the problems in the prior art of single performance of waterproof coatings and inaccurate analysis of the preparation process of waterproof coatings, resulting in low performance of the prepared waterproof coatings.

[0006] To achieve the above object, the present invention provides a waterproof coating having both flexibility and surface rigidity and wear resistance, comprising:

[0007] Step S1, add some water to the stirring tank and start stirring at the initial stirring speed, mix the two defoamers evenly, dilute with water, and then slowly add to the stirring tank, dissolve the dispersant and wetting agent in water and then slowly add them, slowly add the preservative P19, and finally add the remaining water and stir evenly;

[0008] Step S2, adding titanium dioxide, barium sulfate and heavy calcium into the stirring tank in sequence, and stirring evenly;

[0009] Step S3, determining whether to stir at a first stirring speed or maintain the initial stirring speed based on whether the sound frequency fluctuates or whether high-frequency noise is generated during the stirring process;

[0010] Step S4, determining whether to stir at the second stirring speed based on whether bubbles appear in the material during stirring at the first stirring speed or whether the material generates irregular vortices, or sequentially adding emulsion GT203, slurry, black slurry and blue slurry and continuing stirring at the first stirring speed;

[0011] Step S5, after the materials are evenly dispersed, the speed of the stirring blade is reduced to the second stirring speed, and based on the number and rising speed of bubbles overflowing from the materials during the stirring process at the second stirring speed, it is determined whether to continue stirring at the second stirring speed, or slowly add the dissolved thickener, increase the speed to the third stirring speed and raise the height of the stirring blade during the adding process, and stop stirring after the stirring is evenly dispersed;

[0012] The proportion of raw materials for preparing the waterproof coating with both flexibility and surface rigidity and wear resistance is 8-10 parts of water, 0.1-0.3 parts of dispersant D26, 0.05-0.1 parts of preservative P19, 0.1-0.2 parts of silicone defoamer, 0.1-0.2 parts of polyether defoamer, 0.05-0.1 parts of wetting agent BD109, 2-4 parts of titanium dioxide, 5-7 parts of barium sulfate, 8-10 parts of heavy calcium, 40-42 parts of emulsion GT203, 27-29 parts of slurry, 0.07-0.09 parts of black slurry, 0.03-0.05 parts of blue slurry and 0.1-0.3 parts of thickener, wherein the slurry is composed of 50% calcium carbonate, 30% kaolin and 20% mica powder.

[0013] Further, in step S3, determining to stir at the first stirring speed or to stir at the initial stirring speed includes:

[0014] If the sound frequency does not fluctuate and high-frequency noise is not generated during the stirring process, stirring is performed at the first stirring speed;

[0015] If the sound frequency fluctuates or high-frequency noise is generated during the stirring process, make sure to maintain the initial stirring speed for stirring.

[0016] Further, in the step S3, the stirring at the first stirring speed includes increasing the rotation speed of the stirring paddle to 600 rpm for stirring.

[0017] Further, in the step S3, it is determined that the sound frequency during the stirring process fluctuates, including that the difference between the maximum value and the minimum value of the sound frequency during the stirring process is greater than a preset difference.

[0018] 5. The waterproof coating having both flexibility and surface rigidity and wear resistance according to claim 4 is characterized in that the preset difference is determined based on the historical maximum difference between the maximum value and the minimum value of the sound frequency when the sound does not experience frequency fluctuation during stirring at the initial stirring speed.

[0019] Further, in the step S3, determining whether the sound frequency in the stirring process generates high-frequency noise includes that the timestamp of the vibration sensor detecting the presence of a high-frequency vibration signal in the production equipment is consistent with the timestamp of the abnormal sound frequency.

[0020] Further, in step S4, determining to stir at the second stirring speed, or sequentially adding emulsion GT203, slurry, black slurry and blue slurry and continuing stirring at the first stirring speed includes:

[0021] If bubbles appear during the stirring process at the first stirring speed, or the material generates an irregular vortex, stirring is performed at the second stirring speed;

[0022] If the material does not produce abnormal bubbles and irregular vortices during stirring at the first stirring speed, it is determined that emulsion GT203, slurry, black slurry and blue slurry are added in sequence and stirring is continued at the first stirring speed.

[0023] Further, in step S4, determining whether the material undergoes an abnormal phenomenon of bubble generation during stirring at the first stirring speed includes:

[0024] Step S4401, acquiring real-time images of the material during the mixing process within a preset time period at equal intervals;

[0025] Step S4402, obtaining the number of bubbles generated within a preset time period and the difference between the area of ​​the largest bubble and the area of ​​the smallest bubble within the preset time period;

[0026] Step S4403, comparing the number of bubbles generated within a preset time period and the difference between the area of ​​the largest bubble and the area of ​​the smallest bubble within the preset time period with preset thresholds respectively;

[0027] Step S4404: If the number of bubbles generated and the difference between the area of ​​the largest bubble and the area of ​​the smallest bubble within the preset time are both greater than the corresponding preset thresholds, it is determined that the material has an abnormal bubble generation phenomenon.

[0028] Further, in step S5, determining to continue stirring at the second stirring speed or slowly adding the dissolved thickener includes:

[0029] If the number of bubbles overflowing from the material during the stirring process at the second stirring speed is greater than a preset number or the rising speed of the bubbles is greater than a preset rising speed, it is determined to continue stirring at the second stirring speed;

[0030] If the number of bubbles overflowing from the material during the stirring process at the second stirring speed is less than or equal to a preset number and the rising speed of the bubbles is less than or equal to a preset rising speed, it is determined that the dissolved thickener is slowly added.

[0031] Furthermore, the preset number is determined based on a historical average value of the number of bubbles overflowing from the material during stirring at the second stirring speed.

[0032] Compared with the prior art, the beneficial effect of the present invention lies in that the waterproof coating of the present invention achieves a balance between flexibility, rigidity and wear resistance by scientifically proportioning a variety of functional raw materials. The emulsion is the main film-forming substance of the coating, providing flexibility and waterproofness. The addition amount of the emulsion (40-42 parts) ensures the high elasticity and flexibility of the coating. Inorganic fillers such as titanium dioxide, barium sulfate and heavy calcium (a total of 15-21 parts) provide rigidity and wear resistance of the coating. Titanium dioxide can enhance the covering power and weather resistance of the coating, while barium sulfate and heavy calcium improve the hardness and wear resistance of the coating. The addition of thickener (0.1-0.3 parts) not only improves the construction performance of the coating, but also enhances the water resistance and weather resistance of the coating. Additives such as dispersant and wetting agent (0.1-0.3 parts of dispersant and 0.05-0.1 parts of wetting agent) can improve the dispersibility and uniformity of the coating, ensuring that the components are fully mixed during the stirring process.

[0033] Further, the present invention can dynamically adjust the stirring speed according to the actual state in the stirring process by monitoring the sound frequency and vibration signal. For example, when the sound frequency does not fluctuate and does not generate high-frequency noise, the stirring speed can be increased to the first stirring speed (such as 600 rpm), thereby accelerating the mixing of materials and shortening the stirring time. If the sound frequency fluctuates or generates high-frequency noise, it indicates that there may be too many bubbles or uneven distribution of materials in the stirring process. At this time, maintaining the initial stirring speed (such as 300 rpm) can avoid invalid stirring caused by too fast stirring speed, ensure the uniformity and stability of the stirring process, and by monitoring whether the difference between the maximum and minimum values ​​of the sound frequency exceeds the preset threshold, the mixing uniformity of the materials in the stirring process can be judged. If the difference exceeds the threshold, it indicates that the materials are unevenly mixed. At this time, maintaining the initial stirring speed can avoid the generation of bubbles or material stratification caused by too fast stirring speed. The generation of high-frequency noise is usually related to the formation of bubbles in the stirring process. The vibration sensor detects whether the high-frequency vibration signal is consistent with the timestamp of the abnormal sound frequency, and it can be judged whether there are a large number of bubbles. Maintaining the initial stirring speed helps to reduce the generation of bubbles, thereby improving product quality.

[0034] Further, the present invention can dynamically adjust the stirring speed according to the actual state of the material by real-time monitoring of the number of bubbles and vortex characteristics. When it is detected that bubbles produce abnormal phenomena or irregular vortices, switch to a lower stirring speed (second stirring speed) to avoid excessive bubbles or material stratification caused by stirring too fast. If the material does not have uneven bubbles or irregular vortices, continue to stir at the first stirring speed, and add emulsion, black slurry and blue slurry in sequence. This optimized stirring strategy can significantly improve stirring efficiency and reduce stirring time. By monitoring the number of bubbles and area difference, the present invention can promptly find the bubble problem that may occur during stirring. When the number of bubbles and area difference exceed the preset threshold, switch to a lower stirring speed to reduce the further generation of bubbles, thereby improving the uniformity and quality of the coating. Irregular vortices may cause uneven distribution of materials, affecting the performance of the coating. The central position and shape characteristics of the vortex are identified by an image processing algorithm. The present invention can promptly find and avoid the generation of irregular vortices, ensure the stability of the stirring process and the uniformity of the material, and improve the accuracy of the waterproof coating preparation process analysis by the above method, thereby improving the performance of the waterproof coating prepared.

[0035] Furthermore, the present invention can judge the mixing state of the material in the stirring process in real time by monitoring the number of bubbles and the rising speed. When the number of bubbles and the rising speed exceed the preset threshold, continue to stir at the second stirring speed to ensure that the material is fully mixed and the bubbles are discharged. When the number of bubbles and the rising speed are lower than the threshold, add a thickener to further optimize the coating performance. Excessive residual bubbles will lead to uneven coating, surface defects or insufficient strength. By dynamically adjusting the stirring speed and the timing of adding the thickener, the present invention effectively reduces the residual bubbles and ensures the uniformity and density of the coating. By adding the thickener at the right time, the present invention can optimize the flexibility and wear resistance of the coating. The addition of the thickener not only improves the construction performance of the coating, but also enhances the crack resistance and durability of the coating. The addition of the thickener can improve the leveling and adhesion of the coating, making it easier to operate during the construction process, while reducing the risk of cracking and peeling of the coating. The above method improves the accuracy of the analysis of the preparation process of the waterproof coating and thus improves the performance of the prepared waterproof coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The flowchart of the method for preparing a waterproof coating having both flexibility and surface rigidity and wear resistance according to an embodiment of the present invention;

[0037] Figure 2 A flowchart for determining whether bubbles are generated abnormally in a material during stirring at a first stirring speed in a method for preparing a waterproof coating having both flexibility and surface rigidity and wear resistance according to an embodiment of the present invention;

[0038] Figure 3 The present invention is a flowchart of determining whether to stir at a first stirring speed or to maintain an initial stirring speed in a method for preparing a waterproof coating having both flexibility and surface rigidity and wear resistance in an embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0041] See also Figure 1-Figure 3 As shown, Figure 1 The flowchart of the method for preparing a waterproof coating having both flexibility and surface rigidity and wear resistance according to an embodiment of the present invention; Figure 2A flowchart for determining whether bubbles are generated abnormally in a material during stirring at a first stirring speed in a method for preparing a waterproof coating having both flexibility and surface rigidity and wear resistance according to an embodiment of the present invention; Figure 3 The present invention is a flowchart of determining whether to stir at a first stirring speed or to maintain an initial stirring speed in a method for preparing a waterproof coating having both flexibility and surface rigidity and wear resistance in an embodiment of the present invention.

[0042] The waterproof coating of the embodiment of the present invention has both flexibility and surface rigidity and wear resistance, including:

[0043] Step S1, add some water to the stirring tank and start stirring at the initial stirring speed, mix the two defoamers evenly, dilute with water, and then slowly add to the stirring tank, dissolve the dispersant and wetting agent in water and then slowly add them, slowly add the preservative P19, and finally add the remaining water and stir evenly;

[0044] Step S2, adding titanium dioxide, barium sulfate and heavy calcium into the stirring tank in sequence, and stirring evenly;

[0045] Step S3, determining whether to stir at a first stirring speed or maintain the initial stirring speed based on whether the sound frequency fluctuates or whether high-frequency noise is generated during the stirring process;

[0046] Step S4, determining whether to stir at the second stirring speed based on whether bubbles appear in the material during stirring at the first stirring speed or whether the material generates irregular vortices, or sequentially adding emulsion GT203, slurry, black slurry and blue slurry and continuing stirring at the first stirring speed;

[0047] Step S5, after the materials are evenly dispersed, the speed of the stirring blade is reduced to the second stirring speed, and based on the number and rising speed of bubbles overflowing from the materials during the stirring process at the second stirring speed, it is determined whether to continue stirring at the second stirring speed, or slowly add the dissolved thickener, increase the speed to the third stirring speed and raise the height of the stirring blade during the adding process, and stop stirring after the stirring is evenly dispersed;

[0048] The proportion of raw materials for preparing the waterproof coating with both flexibility and surface rigidity and wear resistance is 8-10 parts of water, 0.1-0.3 parts of dispersant D26, 0.05-0.1 parts of preservative P19, 0.1-0.2 parts of silicone defoamer, 0.1-0.2 parts of polyether defoamer, 0.05-0.1 parts of wetting agent BD109, 2-4 parts of titanium dioxide, 5-7 parts of barium sulfate, 8-10 parts of heavy calcium, 40-42 parts of emulsion GT203, 27-29 parts of slurry, 0.07-0.09 parts of black slurry, 0.03-0.05 parts of blue slurry and 0.1-0.3 parts of thickener, wherein the slurry is composed of 50% calcium carbonate, 30% kaolin and 20% mica powder.

[0049] In the embodiment of the present invention, the slurry is composed of 50% calcium carbonate, 30% kaolin and 20% mica powder. The initial stirring speed is determined according to the specific weight of the added raw materials, and is determined according to the initial stirring speed of adding the same weight of raw materials and the same working parameters of the stirring device in the historical preparation process. If the above initial stirring speed does not exist, the initial stirring speed is estimated by the calculation formula of the stirrer speed. The calculation formula of the stirrer speed is: Where N is the stirring speed (rpm), P is the stirring power (W), K is a constant related to the type of stirrer (which can be obtained from the stirrer manual), D is the stirrer diameter (m), and A is the fluid density (kg / m 3 ), B is the dynamic viscosity of the fluid (Pa·s).

[0050] The waterproof coating of the present invention achieves a balance between flexibility, rigidity and wear resistance by scientifically proportioning a variety of functional raw materials. The emulsion is the main film-forming substance of the coating, providing flexibility and waterproofness. The addition amount of the emulsion (40-42 parts) ensures the high elasticity and flexibility of the coating. The inorganic fillers such as titanium dioxide, barium sulfate and heavy calcium (a total of 15-21 parts) provide the rigidity and wear resistance of the coating. The titanium dioxide can enhance the hiding power and weather resistance of the coating, and the barium sulfate and heavy calcium improve the hardness and wear resistance of the coating. The addition of the thickener (0.1-0.3 parts) not only improves the construction performance of the coating, but also enhances the water resistance and weather resistance of the coating. The auxiliary agents such as the dispersant and the wetting agent (0.1-0.3 parts of the dispersant and 0.05-0.1 parts of the wetting agent) can improve the dispersibility and uniformity of the coating, and ensure that the components are fully mixed during the stirring process.

[0051] In the embodiment of the present invention, adding part of the water to the stirring tank and starting stirring includes adding 3 parts of water and starting stirring at a speed of 300 rpm, the initial stirring speed value range is set to 280 rpm-320 rpm, and the initial stirring speed is preferably 300 rpm, the first stirring speed value range is set to 500 rpm-650 rpm, and the first stirring speed value is preferably 600 rpm, the second stirring speed value range is set to 150 rpm-250 rpm, and the second stirring speed value is preferably 200 rpm, the third stirring speed value range is set to 400 rpm-500 rpm, and the third stirring speed value is preferably 450 rpm, but the above values ​​are not limited thereto, and those skilled in the art can also adjust the values ​​according to actual needs.

[0052] Specifically, in step S3, when it is determined to stir at the first stirring speed or to maintain the initial stirring speed, it is determined to stir at the first stirring speed or to maintain the initial stirring speed according to whether the sound frequency fluctuates or whether high-frequency noise is generated during the stirring process;

[0053] When the sound frequency does not fluctuate and high-frequency noise is not generated during the stirring process, stirring is performed at the first stirring speed;

[0054] When the sound frequency fluctuates or high-frequency noise is generated during the stirring process, make sure to maintain the initial stirring speed for stirring.

[0055] In an embodiment of the present invention, judging that the sound frequency fluctuates during the stirring process includes that the difference between the maximum value and the minimum value of the sound frequency during the stirring process is greater than a preset difference, and the preset difference is the historical maximum difference between the maximum value and the minimum value of the sound frequency when the sound does not fluctuate in frequency during the stirring process at the initial stirring speed. Judging that the sound frequency during the stirring process generates high-frequency noise includes that the timestamp of the vibration sensor detecting the presence of a high-frequency vibration signal in the production equipment is consistent with the timestamp of the abnormal sound frequency, and the abnormal sound frequency includes a high-frequency component whose frequency range exceeds the normal operating frequency range (such as higher than 20kHz), the difference between the maximum and minimum values ​​of the frequency exceeds a preset threshold, and the sharpness or fluctuation intensity increases significantly (for example, the sharpness exceeds 1.5 times the normal value), but the above values ​​are not limited to this, and those skilled in the art may also adjust the values ​​according to actual needs.

[0056] The present invention can dynamically adjust the stirring speed according to the actual state in the stirring process by monitoring the sound frequency and vibration signal. For example, when the sound frequency does not fluctuate and does not generate high-frequency noise, the stirring speed can be increased to the first stirring speed (such as 600 rpm), thereby accelerating the mixing of materials and shortening the stirring time. If the sound frequency fluctuates or generates high-frequency noise, it indicates that there may be too many bubbles or uneven distribution of materials in the stirring process. At this time, maintaining the initial stirring speed (such as 300 rpm) can avoid invalid stirring caused by too fast stirring speed, ensure the uniformity and stability of the stirring process, and by monitoring whether the difference between the maximum and minimum values ​​of the sound frequency exceeds the preset threshold, the mixing uniformity of the materials in the stirring process can be judged. If the difference exceeds the threshold, it indicates that the materials are unevenly mixed. At this time, maintaining the initial stirring speed can avoid the generation of bubbles or material stratification caused by too fast stirring speed. The generation of high-frequency noise is usually related to the formation of bubbles in the stirring process. The vibration sensor detects whether the high-frequency vibration signal is consistent with the timestamp of the abnormal sound frequency, and it can be judged whether there are a large number of bubbles. Maintaining the initial stirring speed helps to reduce the generation of bubbles, thereby improving product quality.

[0057] Specifically, in step S4, when it is determined to stir at the second stirring speed, or, emulsion GT203, slurry, black slurry and blue slurry are added in sequence and stirring is continued at the first stirring speed, it is determined to stir at the second stirring speed, or, emulsion GT203, slurry, black slurry and blue slurry are added in sequence and stirring is continued at the first stirring speed, according to whether bubbles appear in the material during stirring at the first stirring speed or whether the material generates irregular vortices;

[0058] When bubbles appear in the material during stirring at the first stirring speed or the material generates an irregular vortex, stirring is performed at the second stirring speed;

[0059] When the material does not produce abnormal bubbles and irregular vortices during stirring at the first stirring speed, it is determined to add emulsion GT203, slurry, black slurry and blue slurry in sequence and continue stirring at the first stirring speed.

[0060] Specifically, in step S4, the step of determining whether the material undergoes an abnormal phenomenon of bubbles being generated during the stirring process at the first stirring speed includes:

[0061] Step S4401, acquiring real-time images of the material during the mixing process within a preset time period at equal intervals;

[0062] Step S4402, obtaining the number of bubbles generated within a preset time period and the difference between the area of ​​the largest bubble and the area of ​​the smallest bubble within the preset time period;

[0063] Step S4403, comparing the number of bubbles generated within a preset time period and the difference between the area of ​​the largest bubble and the area of ​​the smallest bubble within the preset time period with preset thresholds respectively;

[0064] Step S4404: If the number of bubbles generated and the difference between the area of ​​the largest bubble and the area of ​​the smallest bubble within the preset time are both greater than the corresponding preset thresholds, it is determined that the material has an abnormal bubble generation phenomenon.

[0065] In the embodiment of the present invention, the preset time length is set to 30 seconds, the equal interval is set to 5 seconds, the preset bubble number threshold is the average value of the number of bubbles generated in several preset time lengths under the same stirring conditions, and the four-braised chicken one-she area threshold is the average value of the difference between the area of ​​the largest bubble and the area of ​​the smallest bubble in several preset time lengths under the same stirring conditions. However, the above values ​​are not limited to this, and those skilled in the art can also adjust the values ​​according to actual needs; for example, within the preset time length (for example, 30 seconds), the real-time image of the material during the stirring process is captured at equal intervals (for example, every 5 seconds). Assuming that 6 images are captured within 30 seconds, the image processing unit is used to analyze The number of bubbles and the distribution of bubble area in each image are counted. The number of bubbles generated within the preset time (30 seconds) is counted. Assuming that a total of 200 bubbles are detected within 30 seconds, the difference between the area of ​​the largest bubble and the area of ​​the smallest bubble within the preset time is calculated. Assuming that the maximum bubble area is 10 square millimeters, the minimum bubble area is 1 square millimeter, the difference is 9 square millimeters, the preset bubble number threshold is 150, the preset bubble area difference threshold is 5 square millimeters, and the bubble number is greater than the preset bubble number threshold. According to the comparison results, it is judged that abnormal bubble generation has occurred in the material at the first stirring speed (both the bubble number and area difference exceed the preset threshold).

[0066] In the embodiment of the present invention, judging whether an irregular vortex is generated includes analyzing vortex features in an image, identifying the center position of the vortex through an image processing algorithm (such as edge detection and contour extraction), calculating shape features of the vortex, such as the aspect ratio and area change rate of the vortex, and observing the position change of the center of the vortex. If the position of the center of the vortex is stable and the shape is regular in multiple consecutive images, it is a normal vortex; if the position of the center of the vortex changes frequently and the shape is irregular, it is an irregular vortex. For example, the position change of the center of the vortex in three consecutive images does not exceed 10%, and the aspect ratio of the vortex is between 1.5 and 2, which is normal, and it is irregular if it exceeds this range. If the position change of the center of the vortex exceeds a threshold value, or the shape of the vortex is irregular, it is judged that an irregular vortex is generated; if the position of the center of the vortex is stable and the shape is regular, it is judged that no irregular vortex is generated.

[0067] The present invention monitors the number of bubbles and vortex characteristics in real time, and can dynamically adjust the stirring speed according to the actual state of the material. When it is detected that the bubbles generate abnormal phenomena or irregular vortices, the stirring speed is switched to a lower stirring speed (second stirring speed) to avoid excessive bubbles or material stratification caused by too fast stirring. If the material does not have uneven bubbles or irregular vortices, the stirring is continued at the first stirring speed, and the emulsion, black slurry and blue slurry are added in sequence. This optimized stirring strategy can significantly improve the stirring efficiency and reduce the stirring time. By monitoring the number of bubbles and the area difference, the present invention can timely discover the bubble problem that may occur during the stirring process. When the number of bubbles and the area difference exceed the preset threshold, the stirring speed is switched to a lower stirring speed to reduce the further generation of bubbles, thereby improving the uniformity and quality of the coating. The irregular vortex may cause uneven distribution of the material and affect the performance of the coating. The central position and shape characteristics of the vortex are identified by an image processing algorithm. The present invention can timely discover and avoid the generation of irregular vortices, ensure the stability of the stirring process and the uniformity of the material, and improve the accuracy of the analysis of the waterproof coating preparation process through the above method, thereby improving the performance of the prepared waterproof coating.

[0068] Specifically, in step S5, when it is determined to continue stirring at the second stirring speed or slowly add the dissolved thickener, it is determined to continue stirring at the second stirring speed or slowly add the dissolved thickener according to the number and rising speed of bubbles overflowing from the material during the stirring at the second stirring speed;

[0069] When the number of bubbles overflowing from the material during stirring at the second stirring speed is greater than a preset number or the rising speed of the bubbles is greater than a preset rising speed, it is determined to continue stirring at the second stirring speed;

[0070] When the number of bubbles overflowing from the material during stirring at the second stirring speed is less than or equal to a preset number and the rising speed of the bubbles is less than or equal to a preset rising speed, it is determined that the dissolved thickener is slowly added.

[0071] In the embodiment of the present invention, the preset number is the historical average number of bubbles overflowing from the material during stirring at the second stirring speed, and the preset rising speed is the historical average rising speed of bubbles overflowing from the material during stirring at the second stirring speed, but the above values ​​are not limited to this, and technicians in this field can also adjust the values ​​according to actual needs.

[0072] In the embodiment of the present invention, during the process of adding the thickener, the rotation speed is increased to the third stirring speed and the height of the stirring paddle is increased. After stirring is uniform, stirring is stopped. The raised height of the stirring paddle is the historical average raised height of the stirring paddle under the same stirring conditions. The same stirring conditions include but are not limited to "the same stirring speed, the same weight of the stirring material and the same stirring time", but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0073] The present invention can judge the mixing state of the material in the stirring process in real time by monitoring the number of bubbles and the rising speed. When the number of bubbles and the rising speed exceed the preset threshold, continue to stir at the second stirring speed to ensure that the material is fully mixed and the bubbles are discharged. When the number of bubbles and the rising speed are lower than the threshold, add a thickener to further optimize the coating performance. Excessive residual bubbles will cause uneven coating, surface defects or insufficient strength. By dynamically adjusting the stirring speed and the timing of adding the thickener, the present invention effectively reduces the residual bubbles and ensures the uniformity and density of the coating. By adding the thickener at the right time, the present invention can optimize the flexibility and wear resistance of the coating. The addition of the thickener not only improves the construction performance of the coating, but also enhances the crack resistance and durability of the coating. The addition of the thickener can improve the leveling and adhesion of the coating, making it easier to operate during the construction process, while reducing the risk of cracking and peeling of the coating. The above method improves the accuracy of the analysis of the preparation process of the waterproof coating and thus improves the performance of the prepared waterproof coating.

[0074] In the embodiment of the present invention, 3 parts of water are added to the stirring tank (assuming that each part is 10 liters, a total of 30 liters), the stirring motor is started, the initial stirring speed is set to 300 rpm, and stirring is started. After 0.2 parts of the defoamer are mixed evenly, water is added to dilute it, and it is slowly added to the stirring tank. Stirring continues, 0.1 parts of dispersant D26 and 0.05 parts of wetting agent BD109 are respectively dissolved in water and evenly, and slowly added to the stirring tank. Stirring continues, slowly add 0.05 parts of preservative P19, continue stirring, add the remaining 6 parts of water (60 liters), stir evenly, add 3 parts of titanium dioxide, 6 parts of barium sulfate and 9 parts of heavy calcium to the stirring tank in turn, continue stirring to ensure that the filler is evenly dispersed, and use a sound sensor to monitor the sound frequency during the stirring process in real time, and analyze the sound frequency The maximum and minimum values ​​of the frequency are calculated, and the difference is preset as the historical maximum difference between the maximum and minimum values ​​of the sound frequency at the initial stirring speed (assuming it is 200 Hz). If the difference between the maximum and minimum values ​​of the sound frequency is greater than 200 Hz, or the timestamp of the high-frequency vibration signal detected by the vibration sensor is consistent with the timestamp of the abnormal sound frequency, the initial stirring speed is maintained at 300 rpm. If the sound frequency does not fluctuate and no high-frequency noise is generated, the stirring speed is increased to the first stirring speed of 600 rpm. The real-time image of the material during the stirring process within 30 seconds is obtained at equal intervals (every 5 seconds), and the number of bubbles and the distribution of bubble areas in the image are analyzed. Assuming that the number of bubbles detected within 30 seconds is 180 and the maximum bubble area is 12 square meters square millimeter, the minimum bubble area is 2 square millimeters, the difference is 10 square millimeters, the bubble number and area difference are compared with the preset threshold, the preset bubble number threshold is 150, and the preset bubble area difference threshold is 8 square millimeters. If the bubble number is greater than the preset bubble number threshold, and the bubble area difference 10 is greater than the preset bubble area threshold 8, or irregular vortexes are generated, it is determined to stir at the second stirring speed of 200 rpm. If the bubble number and area difference do not exceed the preset threshold and no irregular vortexes are generated, 40 parts of emulsion GT203, 0.08 parts of black slurry and 0.04 parts of blue slurry are added in sequence, and stirring is continued at the first stirring speed of 600 rpm. The stirring speed is adjusted or a thickener is added based on the bubble overflow situation. After the material is evenly dispersed, the speed of the stirring paddle is reduced to the second stirring speed of 200 rpm, and the number of bubbles overflowing from the material and the bubble rising speed during the stirring process at the second stirring speed are monitored in real time. Assuming that the preset bubble number threshold is 50 per minute, and the bubble rising speed threshold is 1 cm per second, if the bubble number is greater than 50 / minute, or the bubble rising speed is greater than 1 cm / second, continue to stir at the second stirring speed of 200 rpm. If the bubble number is less than or equal to 50 / minute, and the bubble rising speed is less than or equal to 1 cm / second, slowly add 0.2 parts of thickener. During the process of adding the thickener, increase the stirring speed to the third stirring speed of 450 rpm, and appropriately increase the height of the stirring paddle. Stop stirring after stirring evenly.

[0075] Example:

[0076] Experimental Materials:

[0077] The waterproof coating of the present invention: a waterproof coating having both flexibility and surface rigidity and wear resistance prepared according to the embodiment of the present invention;

[0078] Ordinary flexible waterproof coating: Use commercially available flexible JS waterproof coating;

[0079] Ordinary rigid waterproof coating: using commercially available rigid waterproof mortar;

[0080] Experimental substrate: cement mortar substrate (used to simulate building walls and floors).

[0081] Construction method: According to the construction requirements of each coating, three layers are evenly applied on the cement mortar substrate, with each layer being about 1.5mm thick and the total thickness being about 4.5mm.

[0082] Curing conditions: Curing for 7 days under standard curing conditions (temperature 23±2℃, humidity 50±10%RH);

[0083] Flexibility test: According to GB / T23445-2009 standard, the bending performance of the coating is tested under low temperature (-10℃) conditions;

[0084] Abrasion resistance test: Use the eraser method and sandpaper method to evaluate the abrasion resistance of the coating under physical friction;

[0085] Crack resistance test: Apply tensile stress to the coating surface and observe whether cracks appear on the coating;

[0086] Water resistance test: Soak the coating sample in water for 48 hours and observe whether the coating bubbles or peels off;

[0087] Bond strength test: According to GB / T23445-2009 standard, test the bonding strength between the coating and the substrate;

[0088] Experimental results:

[0089]

[0090] Experimental results analysis:

[0091] Flexibility: The waterproof coating of the present invention exhibits excellent flexibility under low temperature conditions, which is comparable to that of ordinary flexible waterproof coatings, but better than that of ordinary rigid waterproof coatings. This shows that the coating of the present invention can effectively adapt to the deformation of the base layer and prevent the damage of the waterproof layer caused by temperature changes or cracking of the base layer;

[0092] Wear resistance: The wear resistance of the coating of the present invention is significantly better than that of ordinary flexible waterproof coatings and is comparable to that of ordinary rigid waterproof coatings, which indicates that the coating of the present invention is not only flexible but also has the characteristics of surface rigidity and wear resistance, and is suitable for high friction areas (such as floors and walls);

[0093] Crack resistance: The coating of the present invention has high elongation and crack resistance, which is better than ordinary rigid waterproof coatings, which indicates that the coating of the present invention can effectively resist the expansion of cracks in the base layer in long-term use and extend the service life of the waterproof layer;

[0094] Water resistance: The coating of the present invention performs well in the water resistance test, which is comparable to that of ordinary flexible waterproof coatings, but better than that of ordinary rigid waterproof coatings, which indicates that the coating of the present invention can effectively block water penetration and keep the substrate dry;

[0095] Bond strength: The bonding strength of the coating of the present invention is relatively high, which is comparable to that of ordinary rigid waterproof coatings, but better than that of ordinary flexible waterproof coatings; this indicates that the coating of the present invention can be firmly attached to the surface of the substrate and is not easy to fall off.

[0096] The waterproof coating prepared by the present invention shows significant advantages in balancing flexibility and surface rigidity and wear resistance. Compared with ordinary flexible waterproof coatings, the coating of the present invention performs better in wear resistance and crack resistance; compared with ordinary rigid waterproof coatings, the coating of the present invention performs better in flexibility and water resistance. This waterproof coating with both flexible and rigid wear-resistant properties is particularly suitable for the field of building waterproofing, can effectively adapt to deformation of the base layer, resist physical wear, and extend the service life of the waterproof layer.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waterproof coating that combines flexibility with surface rigidity and wear resistance, characterized in that: The preparation process includes: Step S1, add some water to the stirring tank and start stirring at the initial stirring speed, mix the two defoamers evenly, dilute with water, and then slowly add to the stirring tank, dissolve the dispersant and wetting agent in water and then slowly add them, slowly add the preservative P19, and finally add the remaining water and stir evenly; Step S2, adding titanium dioxide, barium sulfate and heavy calcium into the stirring tank in sequence, and stirring evenly; Step S3, determining whether to stir at a first stirring speed or maintain the initial stirring speed based on whether the sound frequency fluctuates or whether high-frequency noise is generated during the stirring process; Step S4, determining whether to stir at the second stirring speed based on whether bubbles appear in the material during stirring at the first stirring speed or whether the material generates irregular vortices, or sequentially adding emulsion GT203, slurry, black slurry and blue slurry and continuing stirring at the first stirring speed; Step S5, after the materials are evenly dispersed, the speed of the stirring blade is reduced to the second stirring speed, and based on the number and rising speed of bubbles overflowing from the materials during the stirring process at the second stirring speed, it is determined whether to continue stirring at the second stirring speed, or slowly add the dissolved thickener, increase the speed to the third stirring speed and raise the height of the stirring blade during the adding process, and stop stirring after the stirring is evenly dispersed; The proportion of raw materials for preparing the waterproof coating with both flexibility and surface rigidity and wear resistance is 8-10 parts of water, 0.1-0.3 parts of dispersant D26, 0.05-0.1 parts of preservative P19, 0.1-0.2 parts of silicone defoamer, 0.1-0.2 parts of polyether defoamer, 0.05-0.1 parts of wetting agent BD109, 2-4 parts of titanium dioxide, 5-7 parts of barium sulfate, 8-10 parts of heavy calcium, 40-42 parts of emulsion GT203, 27-29 parts of slurry, 0.07-0.09 parts of black slurry, 0.03-0.05 parts of blue slurry and 0.1-0.3 parts of thickener, wherein the slurry is composed of 50% calcium carbonate, 30% kaolin and 20% mica powder.

2. The waterproof coating having both flexibility and surface rigidity and wear resistance according to claim 1, characterized in that: In step S3, determining whether to stir at the first stirring speed or to stir at the initial stirring speed includes: If the sound frequency does not fluctuate and high-frequency noise is not generated during the stirring process, stirring is performed at the first stirring speed; If the sound frequency fluctuates or high-frequency noise is generated during the stirring process, make sure to maintain the initial stirring speed for stirring.

3. The waterproof coating having both flexibility and surface rigidity and wear resistance according to claim 2, characterized in that: In the step S3, stirring at the first stirring speed includes increasing the rotation speed of the stirring paddle to 600 rpm for stirring.

4. The waterproof coating having both flexibility and surface rigidity and wear resistance according to claim 2, characterized in that: In the step S3, it is determined that the sound frequency during the stirring process fluctuates, including that the difference between the maximum value and the minimum value of the sound frequency during the stirring process is greater than a preset difference.

5. The waterproof coating having both flexibility and surface rigidity and wear resistance according to claim 4, characterized in that: The preset difference is determined according to the historical maximum difference between the maximum value and the minimum value of the sound frequency when the sound does not experience frequency fluctuation during the stirring process at the initial stirring speed.

6. The waterproof coating having both flexibility and surface rigidity and wear resistance according to claim 5, characterized in that: In the step S3, determining whether the sound frequency in the stirring process generates high-frequency noise includes the timestamp of the vibration sensor detecting that the production equipment has a high-frequency vibration signal is consistent with the timestamp of the abnormal sound frequency.

7. The waterproof coating having both flexibility and surface rigidity and wear resistance according to claim 6, characterized in that: In the step S4, determining to stir at the second stirring speed, or sequentially adding the emulsion GT203, the slurry, the black slurry and the blue slurry and continuing stirring at the first stirring speed comprises: If bubbles appear during the stirring process at the first stirring speed, or the material generates an irregular vortex, stirring is performed at the second stirring speed; If the material does not produce abnormal bubbles and irregular vortices during stirring at the first stirring speed, it is determined that emulsion GT203, slurry, black slurry and blue slurry are added in sequence and stirring is continued at the first stirring speed.

8. The waterproof coating having both flexibility and surface rigidity and wear resistance according to claim 7, characterized in that: In step S4, determining whether the material undergoes an abnormal phenomenon of bubble generation during stirring at the first stirring speed includes: Step S4401, acquiring real-time images of the material during the mixing process within a preset time period at equal intervals; Step S4402, obtaining the number of bubbles generated within a preset time period and the difference between the area of ​​the largest bubble and the area of ​​the smallest bubble within the preset time period; Step S4403, comparing the number of bubbles generated within a preset time period and the difference between the area of ​​the largest bubble and the area of ​​the smallest bubble within the preset time period with preset thresholds respectively; Step S4404: If the number of bubbles generated and the difference between the area of ​​the largest bubble and the area of ​​the smallest bubble within the preset time are both greater than the corresponding preset thresholds, it is determined that the material has an abnormal bubble generation phenomenon.

9. The waterproof coating having both flexibility and surface rigidity and wear resistance according to claim 8, characterized in that: In step S5, determining to continue stirring at the second stirring speed or slowly add the dissolved thickener includes: If the number of bubbles overflowing from the material during the stirring process at the second stirring speed is greater than a preset number or the rising speed of the bubbles is greater than a preset rising speed, it is determined to continue stirring at the second stirring speed; If the number of bubbles overflowing from the material during the stirring process at the second stirring speed is less than or equal to a preset number and the rising speed of the bubbles is less than or equal to a preset rising speed, it is determined that the dissolved thickener is slowly added.

10. The waterproof coating having both flexibility and surface rigidity and wear resistance according to claim 9, characterized in that: The preset number is determined according to a historical average number of bubbles overflowing from the material during the stirring process at the second stirring speed.

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