Preparation method of epoxy resin floor coating

Abstract

The invention belongs to the technical field of coatings, and particularly relates to a preparation method of an epoxy resin floor coating, which comprises the steps of pigment mixing, heating melting, high-pressure spraying atomization, cooling powder forming, powder air flotation mixing, thermal thawing and vibration mixing. According to the method, the mixture A is sprayed outwards in a high-pressure spraying mode to form mist, then the mist is cooled, the mist mixture A forms powder of the solid mixture A after being cooled, and then when the powder of the mixture A, silicon powder and modified additive powder are mixed, all the powder can be driven to move through disturbance of airflow, so that the powder of the mixture A is uniformly mixed with the silicon powder and the modified additive powder. Meanwhile, due to mutual collision among disturbed airflows, various components can be uniformly mixed, so that the mixing uniformity is improved, meanwhile, due to the fact that cutting of the epoxy resin is realized before mixing, the fineness of the mixed coating can be improved, and the quality of the epoxy resin floor coating is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of coatings, and in particular relates to a method for preparing an epoxy resin floor coating. Background Art

[0002] Epoxy resin floor coatings have the following characteristics: excellent adhesion: Epoxy resin floor coatings have many hydroxyl groups and ether bonds, so they can be adsorbed to the substrate; and the volume shrinkage rate of epoxy resin is low when curing, so the paint film has excellent adhesion to polar substrates such as metal, ceramics, glass, concrete, and wood; epoxy resin floor coatings have a certain wetting power on wet surfaces, especially when using polyamide resin as a curing agent, it can be made into underwater construction coatings, which can displace water on the surface of the object and be applied, and can be used for emergency repair and anti-corrosion construction of underwater structures; the molecular weight of epoxy resin floor coatings themselves is not high, and it can be combined with various curing agents to produce solvent-free, high-solids powder coatings and water-based coatings, which meet environmental protection requirements and can obtain thick film coatings; epoxy resin floor coatings contain two active groups, epoxy and hydroxyl, and can be combined with polyamines, polyamide resins, phenolic resins, amino resins, polyisocyanates, etc. to make a variety of coatings, which can be dried at room temperature or baked at high temperature to meet different construction requirements; therefore, epoxy resin floor coatings are widely used in construction engineering and other fields.

[0003] However, the epoxy resin and other lipid substances have a high viscosity, which makes the epoxy resin often adhere to the stirring rod during stirring and makes it difficult for the stirring rod to cut and separate the epoxy resin during stirring. In the production process of epoxy resin floor coatings, it is necessary to add a variety of additives and pigments to the epoxy resin. Therefore, due to the characteristics of the epoxy resin during stirring, the fineness of the epoxy resin floor coating is poor, and the uniformity of the epoxy resin floor coating is poor, which in turn causes the quality of the produced epoxy resin floor to be poor. At the same time, due to the high viscosity of the epoxy resin, stirring is difficult. Existing solutions usually choose to add diluents or dispersants to the epoxy resin to increase the fluidity and surface activity of the epoxy resin, thereby reducing the surface tension of the epoxy resin, thereby increasing the uniformity of the additives and pigments in the epoxy resin. However, due to the increase in the amount of dispersants and diluents added, the color of the epoxy resin will appear floating during use, thereby reducing the quality of the epoxy resin floor after paving. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention proposes a method for preparing an epoxy resin floor coating. The present invention is mainly used to solve the problem that the high viscosity of epoxy resin coatings causes difficulty in stirring, which in turn causes poor fineness of the produced floor coating and leads to poor coating quality.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a method for preparing an epoxy resin floor coating, comprising the following steps:

[0006] S1: Weighing 300-500 parts by weight of an epoxy resin and 30-50 parts by weight of a pigment; then stirring and mixing the weighed pigment and epoxy resin to form a mixture A;

[0007] S2: The mixture A is then heated to 150-200° C., and the heated mixture A is then stirred a second time;

[0008] S3: After the mixture A is evenly mixed, the temperature of the mixture A is raised to between 180° C. and 240° C., and the mixture A is added to the spraying device. The heated mixture A is then atomized and sprayed by the spraying device to form a mist-like mixture A;

[0009] S4: The misted mixture A is then transferred to a freezing device by an airflow, and the atomized mixture A is frozen by the freezing device to form a solid powdered mixture A;

[0010] S5: Then, the powdered mixture A is added to an air flotation device, and the powdered mixture A is randomly distributed in the cavity of the air flotation device. Then, 40 parts by weight of silicon powder and 30 parts by weight of a modifying additive powder are introduced into the cavity, and the mixture is stirred and mixed by airflow to obtain a mixture B.

[0011] S6: putting the mixture B into the stirring equipment, then heating the mixture B, stirring the mixture B while heating, and stopping the stirring and heating after the mixture B becomes a fluid state, thereby completing the preparation of the floor coating.

[0012] During operation, the pigment is first mixed with the epoxy resin (the epoxy resin involved in this scheme is a non-thermosetting epoxy resin), and the activity of the epoxy resin molecules is increased by heating, thereby reducing the viscosity of the epoxy resin, thereby improving the cutting effect of the stirring rod on the epoxy resin during the stirring process, thereby improving the fineness of the stirred mixture A, and thereby improving the uniformity of the mixture of the pigment and the epoxy resin; then the mixture A is sprayed outward by a high-pressure jet. Since the mixture A is heated, it will have better fluidity, thereby improving the spraying process. The uniformity of atomization (due to the high fluidity of mixture A, the adhesion between mixture A is low, which makes it easier for mixture A to be separated. Atomization is also a form of separation, which makes it easier to atomize mixture A during the atomization process). At the same time, since the temperature of mixture A is increased during transfer to the injection device, the temperature drop of mixture A caused by transfer during the transfer process can be reduced, thereby ensuring the fluidity of mixture A during injection, thereby ensuring the quality of injection and the quality of atomization; after mixture A becomes atomized, the atomized mixture is then subjected to a Cooling treatment, the mist mixture A is frozen into a solid state after cooling, and then the powder of mixture A is formed, followed by the powder of mixture A, silicon powder and modified additive powder (wherein the modified additive includes a curing agent, a dispersant, a defoaming agent and a leveling agent, and the preparation method is consistent with the above-mentioned method for preparing the powder of mixture A, by stirring and mixing the additives, and then atomizing them by high-pressure spraying, and then forming the modified additive powder by freezing). Since all the substances are in powder state, during mixing, the disturbance of the airflow can drive all the powders to move, and at the same time, due to the disturbance The air currents collide with each other, so that the various components can be evenly mixed. After becoming powder, there will be certain gaps between the powders under the drive of the air flow, so that it can be more easily mixed during the mixing process, thereby improving the uniformity of the mixing. At the same time, because the epoxy resin is cut before mixing, the fineness of the mixed coating can be improved, thereby improving the quality of the epoxy resin floor coating; after mixing, the mixing zone is heated to realize the conversion of the mixture from solid to fluid form, thereby facilitating the storage, transportation and use of the coating.

[0013] Preferably, the method for mixing the mixture A, silicon powder and modifying additive powder comprises the following steps:

[0014] Q1: The powder of mixture A is blown into the mixing device through a fan, and the wind speed blown by the fan is uniform and consistent, and the wind speed is 0.1-0.3m / s;

[0015] Q2: The silicon powder and modified additive powder weighed in the above step are blown into the above mixing device through a blower;

[0016] Q3: A turbulent airflow is then introduced into the mixing device to drive the internal materials to move and mix, wherein the gas medium of the turbulent airflow is a gas with a kinematic viscosity greater than 15 square millimeters per second;

[0017] Q4: The mixed materials are then collected through a filtration device to obtain a mixture B.

[0018] During operation, since all the components of the epoxy resin floor coating are in a powder state after treatment, in this scheme, the powder of mixture A is blown into the mixing device through a fan. Driven by the fan, the powder particles of mixture A are separated from each other, and the gaps between the powder particles are increased. The remaining powder is then blown into the mixing device, and a turbulent airflow is introduced into the interior of the mixing device, so that the powder particles of various raw materials can collide irregularly inside, so that the raw material powders can be mixed evenly. At the same time, since the gas filled in the mixing device is a gas with high dynamic viscosity, the sedimentation rate of the raw material powder caused by its own gravity is small (the gas resistance of an object moving in a gas is usually positively correlated with the speed of the object relative to the gas; when small particles such as dust are in free fall, the gas resistance will gradually increase and eventually equal to its own gravity, and the particles maintain uniform motion; the corresponding speed is the terminal velocity of the particle; when the terminal velocity is smaller When the particle size is greater than 100 nm, the longer the particle is suspended in the gas, the faster the dust will settle and accumulate. The terminal velocity is calculated using Stokes' law in fluid mechanics. The terminal velocity is inversely proportional to the kinematic viscosity of the gas. The greater the kinematic viscosity of the gas, the smaller the terminal velocity of the particle. When the terminal velocity of the particle is smaller, the smaller the offsetting effect of the terminal velocity on the external airflow, which makes it easier for the particle to be driven by the airflow to move, thereby forming a more irregular movement, thereby increasing the degree of disorder of the particle). The raw material powder can be maintained in a relatively stable suspended state in the mixing device for a longer time, and can be driven by the airflow to achieve a longer movement, thereby increasing the probability of collision between the raw material particles, thereby improving the uniformity of the mixing of the raw materials, avoiding the raw material powder from forming non-sticky clumps when entering the mixing device, and then quickly settling downward under the action of gravity, resulting in uneven mixing, thereby improving the mixing uniformity of the raw material powder, thereby improving the uniformity of the floor coating.

[0019] Preferably, in the above step S4, the mist mixture A is locally accelerated along the path where the mist mixture A is transferred by the airflow.

[0020] During operation, after the mist mixture A is sprayed out, the gaps between the mist particles are relatively small, and under the action of the mutual attraction between the particles, there is a risk that the small mist particles will aggregate into large particles, which will lead to an increase in the particles of the powder of the formed mixture A, which will lead to a decrease in the fineness of the separation of the mixture A, which will cause the fineness of the floor coating to decrease, and thus the quality of the floor coating to decrease. At the same time, since the powder particles of the formed mixture A are uneven in size, the mixing of the produced epoxy floor coating is uneven, and the quality of the floor coating is reduced; therefore, in this scheme, by transferring the mixture A in the mist The mixture A is locally accelerated along the path, for example, the mist of the mixture A is accelerated by a fast airflow, so that the distance between the mists of the mixture A is pulled closer in the accelerated area, thereby avoiding the re-aggregation between the mists, and thus avoiding the uneven size of the powder particles of the formed mixture A, thereby ensuring the mixing uniformity of the produced floor coating, thereby improving the quality of the floor coating, and at the same time, the powder particles of the formed mixture A can be made smaller, thereby improving the finer mixing between the powder A in the mixing area and the other additives, thereby improving the fineness of the produced floor coating, thereby improving the quality of the floor coating.

[0021] Preferably, the pigment added to the epoxy resin floor coating is an inorganic pigment aqueous solution; and the air pressure in the area into which the mixture A enters after being sprayed out in the above step S3 is 0.3-0.5 atmospheres.

[0022] During operation, since inorganic pigments are a type of inorganic salt, (since inorganic salts will form water, cations, and water and anions after dissolving in water, after heating and stirring, the formed water, cations, and water and anions are dispersed in the molecules of the epoxy resin, and due to the mutual attraction between water, cations, and water and anions, the traction of the liquid relative to the surface molecules can be increased, and the macroscopic surface increases the surface tension of the liquid phase.) Since the addition of inorganic salt aqueous solution to the epoxy resin can increase the surface tension of the epoxy resin, the sprayed mist mixture A can be more easily formed into a spherical shape (since the liquid particles are located in the gas, the surface tends to shrink under the action of surface tension, and the sphere is the most stable surface form, so the liquid usually forms a sphere under the action of surface tension); the powder particles of the formed mixture A are spherical, and since the sphere has a smaller stacking angle and the movement resistance between the spherical particles is smaller, the powder has better fluidity, which can reduce the powder mixing process. At the same time, due to the low-pressure environment, the particles of the sprayed mixture A are subject to less resistance from the air, which reduces the probability of deformation caused by the resistance of the particles, thereby improving the sphericity of the powder particles of the mixture A, thereby improving the mixing uniformity of the floor coating; at the same time, under negative pressure conditions, the surface tension of the mist mixture A can be increased (the surface tension formation mechanism is explained as follows: the liquid surface is the interface between the water phase and the gas phase, and the molecules in the interface layer are subject to a force from the water phase molecules that is greater than the force from the gas phase molecules. Therefore, the surface molecules are subject to the force of being pulled into the water phase, causing the surface to have a tendency to automatically shrink to a minimum; the reduction in air pressure reduces the force of the gas phase on the water surface, thereby increasing the surface tension), thereby further improving the sphericity of the powder particles of the mixture A, thereby improving the fluidity of the powder of the mixture A, thereby improving the mixing uniformity of the floor coating, thereby improving the quality of the floor coating.

[0023] Preferably, after the acceleration treatment, the mist mixture A is decelerated again, and the mixture is cooled while being decelerated; the path length of the deceleration treatment is not less than 1-2 meters, and the movement speed of the mist mixture A after deceleration is uniform, and the movement speed is 0.5-0.6m / s.

[0024] During operation, the epoxy resin in the molten state cannot maintain a good spherical shape due to the high-speed operation, which will increase the resistance between the powder particles of the mixture A, thereby affecting the uniformity of the floor coating. Therefore, in this scheme, the accelerated particles are subjected to a deceleration treatment. After the deceleration treatment, the resistance encountered by the particles is reduced, and the particles can form a better spherical structure under the action of surface tension, thereby improving the fluidity of the formed powder, thereby improving the uniformity of the mixed material, and thereby improving the uniformity of the floor; at the same time, the mist mixture is preliminarily cooled during the deceleration treatment, thereby forming a relatively hard surface layer on the surface of the particles, thereby avoiding the fusion of the powder particles during the deceleration process, thereby ensuring the consistency of the powder particles, thereby improving the uniformity of the mixed material, and thereby improving the uniformity of the floor coating.

[0025] Preferably, the heating method in the above step S6 is microwave heating.

[0026] During operation, if conductive heating is used for heating and softening, the heating time of each area of ​​the mixed powder will be inconsistent, and the melted floor coating that is heated first will flow in the gaps of the unmelted floor coating, thereby destroying the formed uniform powder structure, and causing uneven floor coating. At the same time, due to the inconsistent heating time of each area, thermal aging will occur in the area that has been heated for a long time, thereby reducing the quality of the epoxy floor coating. Therefore, in this scheme, microwave heating is used for heating. Microwave heating utilizes the vibration of the material particles themselves, thereby achieving simultaneous heating of the material, and ensuring that the heating temperature of each part remains basically consistent, thereby making the heating time of each part basically the same, thereby avoiding local thermal aging caused by different heating times, thereby ensuring the consistency of the quality of the floor coating, and at the same time reducing the flow of the material, thereby maintaining the uniformity of the melted mixed powder, thereby ensuring the uniformity of the floor coating.

[0027] Preferably, the stirring method in the above step S6 is vibration stirring.

[0028] During operation, after the epoxy resin and additives are processed, all the materials are separated into independent small particles. Then, after melting, the small particles need to be fused with each other to realize the production of epoxy resin floor coating. Since the particles are small, there is no need for large-scale stirring when fusing the particles. Therefore, in this solution, the material is vibrated for a period of time, and the vibration causes the material to move with a certain amplitude during the melting process, thereby accelerating the fusion of the materials. Therefore, it is possible to accelerate the mixing of the materials without the need for large-scale stirring, thereby improving the mixing efficiency.

[0029] A method for laying an epoxy resin floor coating comprises the following steps:

[0030] M1: Grind the paved floor, then clean it. After the floor is dry, apply a layer of water-based epoxy resin glue on the floor. The amount of application should not exceed 0.5kg / ㎡.

[0031] M2: Then set the template at the edge of the ground to be paved and seal the joints of the template;

[0032] M3: Then, the powder of the mixture B obtained in the above step S5 is spread on the ground, and the powder of the mixture B is spread flat by a leveling device;

[0033] M4: The mixed powder is then heated by a heating device, and the heated epoxy resin coating is vibrated by a vibrating plate;

[0034] M5: The surface of the epoxy resin floor coating is then heated by hot air, and then the laying of the epoxy resin floor coating is completed.

[0035] During work, when laying epoxy resin floor, there are many gaps and convex and concave structures on the ground, and there is often a lot of air in the gaps and convex and concave structures. The epoxy resin floor has a large viscosity. When the space in the gap shell convex and concave structure is occupied by the epoxy resin floor coating, the internal air is squeezed out. At this time, the upper epoxy resin blocks the air flow path, and more bubbles are formed inside the epoxy resin floor, which leads to poor quality of epoxy resin floor laying. Therefore, in this solution, the ground is polished to reduce the convex and concave structure of the ground, which can Reduce the bubbles inside the floor when it is laid, thereby improving the quality of the floor after laying; then apply water-based epoxy resin glue on the polished ground, thereby increasing the contact strength between the laid epoxy resin floor coating and the ground, thereby preventing the floor from peeling, thereby improving the quality of the floor; then by laying the powder on the ground, due to the better flow phase between the powders, the floor can have better flatness during paving, and there are gaps between the powders, and then when the floor melts, the internal bubbles can flow to the outside along the gaps between the powders, thereby reducing the amount of bubbles inside the floor, thereby improving the quality of floor laying.

[0036] The beneficial effects of the present invention are as follows:

[0037] 1. In the present invention, the pigment and the epoxy resin are first mixed, and the activity of the epoxy resin molecules is increased by heating, thereby reducing the viscosity of the epoxy resin, thereby improving the cutting effect of the stirring rod on the epoxy resin during the stirring process, thereby improving the fineness of the mixture A after stirring, and thereby improving the uniformity of the mixing of the pigment and the epoxy resin; then the mixture A is sprayed outward by high-pressure spraying. Since the mixture A is heated, the mixture A has better fluidity, thereby improving the uniformity of atomization during the spraying process. At the same time, since the temperature of the mixture A is increased when it is transferred to the spraying device, the temperature drop of the mixture A caused by the transfer during the transfer process can be reduced, thereby ensuring the fluidity of the mixture A during spraying, thereby ensuring the quality of the spraying, and thereby ensuring the quality of the atomization; after the mixture A becomes mist, the mist mixture is cooled. The mist-like mixture A freezes into a solid state after cooling, thereby forming the powder of mixture A. Subsequently, the powder of mixture A, silicon powder and modified additive powder, since all substances are in powder state, can be driven to move by the disturbance of the airflow during mixing. At the same time, due to the collision between the disturbed airflows, the various components can be evenly mixed. After becoming powdered, there will be certain gaps between the powders driven by the airflow, so that it can be more easily mixed during the mixing process, thereby improving the uniformity of the mixing. At the same time, since the epoxy resin is cut before mixing, the fineness of the mixed coating can be improved, thereby improving the quality of the epoxy resin floor coating. After mixing, the mixing zone is heated to realize the conversion of the mixture from solid to fluid form, thereby facilitating the storage, transportation and use of the coating.

[0038] 2. In the present invention, since all the components of the epoxy resin floor coating are in a powdered state after being treated, in this solution, the powder of mixture A is blown into the mixing device through a fan. Driven by the fan, the powder particles of mixture A are separated from each other, and the gaps between the powder particles are increased. The remaining powder is then blown into the mixing device, and a turbulent airflow is introduced into the interior of the mixing device. The powder particles of various raw materials collide with each other irregularly, so that the raw material powders can be mixed evenly. At the same time, the gas filled in the mixing device is a dynamic viscosity. The gas with high density can reduce the sedimentation rate of the raw material powder under the action of its own gravity, so that the raw material powder can be kept in a relatively stable suspended state in the mixing device for a longer time, and can be driven by the airflow to achieve longer movement, thereby increasing the probability of collision between raw material particles, thereby improving the uniformity of raw material mixing, avoiding the situation that the raw material powder enters the mixing device in the form of non-sticky clumps, and then quickly settles downward under the action of gravity, resulting in uneven mixing, thereby improving the mixing uniformity of the raw material powder, and thus can improve the uniformity of floor coatings.

[0039] 3. In the present invention, after the mist mixture A is sprayed out, the gaps between the mist particles are relatively small, and under the action of the mutual attraction between the particles, there is a risk that the small mist particles will aggregate into large particles, which will lead to an increase in the particles of the powder of the formed mixture A, which will lead to a decrease in the fineness of the separation of the mixture A, which will lead to a decrease in the fineness of the floor coating, which will lead to a decrease in the quality of the floor coating. At the same time, since the powder particles of the formed mixture A are uneven in size, the mixing of the produced epoxy floor coating is uneven, which will lead to a decrease in the quality of the floor coating. Therefore, in this solution, by converting the mist mixture A into a powder, the powder particles of the mixture A are uniform in size, which will lead to uneven mixing of the produced epoxy floor coating, which will lead to a decrease in the quality of the floor coating. The mixture A is locally accelerated on the moving path, for example, the mist of the mixture A is accelerated by a fast airflow, so that the distance between the mist of the mixture A is pulled closer in the accelerated area, thereby avoiding the re-aggregation between the mist, and thus avoiding the uneven size of the powder particles of the formed mixture A, thereby ensuring the mixing uniformity of the produced floor coating, thereby improving the quality of the floor coating, and at the same time, the powder particles of the formed mixture A can be made smaller, thereby improving the finer mixing between the powder A in the mixing area and the other additives, thereby improving the fineness of the produced floor coating, thereby improving the quality of the floor coating.

[0040] 4. In the present invention, since the inorganic pigment is a type of inorganic salt, (since inorganic salts form water, cations, and water, anions after being dissolved in water, after heating and stirring, the formed water, cations, and water, anions are dispersed in the molecules of the epoxy resin. Due to the mutual attraction between the water, cations, and water, anions, the traction of the liquid phase on the surface molecules is increased, and the macroscopic surface increases the surface tension of the liquid phase.), since the addition of an inorganic salt aqueous solution to the epoxy resin can increase the surface tension of the epoxy resin, the sprayed mist mixture A can be more easily formed into a spherical shape. (Since the liquid particles are located in the gas, the surface will have a tendency to shrink under the action of surface tension, and the sphere is the most stable surface form. Therefore, the liquid usually forms a sphere under the action of surface tension). This will make the formed mixture A The powder particles are spherical. Since the sphere has a smaller stacking angle and the movement resistance between the spherical particles is smaller, the powder has better fluidity, which can reduce the relative movement resistance during the powder mixing process, thereby improving the uniformity of the powder mixing, and thus improving the quality of the floor coating; at the same time, due to the low-pressure environment, the particles of the sprayed mixture A are subject to less air resistance, which reduces the probability of deformation of the particles due to the resistance, thereby improving the sphericity of the powder particles of the mixture A, and thereby improving the mixing uniformity of the floor coating; at the same time, under negative pressure conditions, the surface tension of the mist mixture A can be increased, which can further improve the sphericity of the powder particles of the mixture A, thereby improving the fluidity of the mixture A powder, thereby improving the mixing uniformity of the floor coating, and thereby improving the quality of the floor coating.

[0041] 5. In the present invention, the epoxy resin in the molten state cannot maintain a good spherical shape under high-speed operation, which will increase the resistance between the powder particles of the mixture A formed, thereby affecting the uniformity of the floor coating. Therefore, in this scheme, the accelerated particles are subjected to a deceleration treatment. After the deceleration treatment, the resistance encountered by the particles is reduced, and the particles can form a better spherical structure under the action of surface tension, thereby improving the fluidity of the formed powder, thereby improving the uniformity of the mixed material, and thereby improving the uniformity of the floor; at the same time, the mist mixture is preliminarily cooled during the deceleration treatment, thereby forming a relatively hard surface layer on the surface of the particles, thereby avoiding the fusion of the powder particles during the deceleration process, thereby ensuring the consistency of the powder particles, thereby improving the uniformity of the mixed material, and thereby improving the uniformity of the floor coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention will be further described below with reference to the accompanying drawings.

[0043] Figure 1It is a flowchart of the method for preparing the epoxy resin floor coating of the present invention; DETAILED DESCRIPTION

[0044] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0045] like Figure 1 As shown, a method for preparing an epoxy resin floor coating comprises the following steps:

[0046] S1: Weighing 300-500 parts by weight of an epoxy resin and 30-50 parts by weight of a pigment; then stirring and mixing the weighed pigment and epoxy resin to form a mixture A;

[0047] S2: The mixture A is then heated to 150-200° C., and the heated mixture A is then stirred a second time;

[0048] S3: After the mixture A is evenly mixed, the temperature of the mixture A is raised to between 180° C. and 240° C., and the mixture A is added to the spraying device. The heated mixture A is then atomized and sprayed by the spraying device to form a mist-like mixture A;

[0049] S4: The misted mixture A is then transferred to a freezing device by an airflow, and the atomized mixture A is frozen by the freezing device to form a solid powdered mixture A;

[0050] S5: Then, the powdered mixture A is added to an air flotation device, and the powdered mixture A is randomly distributed in the cavity of the air flotation device. Then, 40 parts by weight of silicon powder and 30 parts by weight of a modifying additive powder are introduced into the cavity, and the mixture is stirred and mixed by airflow to obtain a mixture B.

[0051] S6: putting the mixture B into the stirring equipment, then heating the mixture B, stirring the mixture B while heating, and stopping the stirring and heating after the mixture B becomes a fluid state, thereby completing the preparation of the floor coating.

[0052] During operation, the pigment and epoxy resin are first mixed, and the activity of the epoxy resin molecules is increased by heating, thereby reducing the viscosity of the epoxy resin, thereby improving the cutting effect of the stirring rod on the epoxy resin during the stirring process, thereby improving the fineness of the stirred mixture A, and thereby improving the uniformity of the mixing of the pigment and the epoxy resin; then the mixture A is sprayed outward by high-pressure spraying. Since the mixture A is heated, the mixture A has better fluidity, thereby improving the uniformity of atomization during the spraying process (due to the high fluidity of the mixture A, the adhesion between the mixture A is low, thereby making the mixture A easier to separate, and atomization is also a form of separation, thereby making it easier to atomize the mixture A during the atomization process). At the same time, since the temperature of the mixture A is increased when it is transferred to the spraying device, the temperature drop of the mixture A caused by the transfer during the transfer process can be reduced, thereby ensuring the fluidity of the mixture A during the spraying, thereby ensuring the quality of the spraying, and thereby ensuring the quality of the atomization; after the mixture A becomes a mist, the mist mixture is then cooled, and the mist mixture A After cooling, it freezes into a solid state to form the powder of mixture A. Then, the powder of mixture A, silicon powder and modified additive powder (wherein the modified additive includes a curing agent, a dispersant, a defoaming agent and a leveling agent, and the preparation method is consistent with the above-mentioned method for preparing the powder of mixture A, by stirring and mixing the additives, then atomizing by high-pressure spraying, and then forming the modified additive powder by freezing). Since all the substances are in powder state, during mixing, the disturbance of the airflow can drive all the powders to move, and at the same time, due to the mutual interaction between the disturbed airflows, Phase collision allows for uniform mixing of various components. After becoming powdered, there will be certain gaps between the powders driven by the airflow, making it easier to achieve uniform mixing during the mixing process, thereby improving the uniformity of the mixing. At the same time, the epoxy resin is cut before mixing, thereby increasing the fineness of the mixed coating and improving the quality of the epoxy resin floor coating. After mixing, the mixing zone is heated to convert the mixture from a solid state to a fluid state, thereby facilitating the storage, transportation and use of the coating.

[0053] The mixing method of the mixture A, silicon powder and modified additive powder comprises the following steps:

[0054] Q1: The powder of mixture A is blown into the mixing device through a fan, and the wind speed blown by the fan is uniform and consistent, and the wind speed is 0.1-0.3m / s;

[0055] Q2: The silicon powder and modified additive powder weighed in the above step are blown into the above mixing device through a blower;

[0056] Q3: A turbulent airflow is then introduced into the mixing device to drive the internal materials to move and mix, wherein the gas medium of the turbulent airflow is a gas with a kinematic viscosity greater than 15 square millimeters per second;

[0057] Q4: The mixed materials are then collected through a filtration device to obtain a mixture B.

[0058] During operation, since all the components of the epoxy resin floor coating are in a powder state after treatment, in this scheme, the powder of mixture A is blown into the mixing device through a fan. Driven by the fan, the powder particles of mixture A are separated from each other, and the gaps between the powder particles are increased. The remaining powder is then blown into the mixing device, and a turbulent airflow is introduced into the interior of the mixing device, so that the powder particles of various raw materials can collide irregularly inside, so that the raw material powders can be mixed evenly. At the same time, since the gas filled in the mixing device is a gas with high dynamic viscosity (argon, hydrogen, oxygen and other gases can be selected), the sedimentation rate of the raw material powder caused by its own gravity is small (the gas resistance of an object moving in a gas is usually positively correlated with the speed of the object relative to the gas; when small particles such as dust are in free fall, the gas resistance will gradually increase and eventually equal to its own gravity, and the particles will maintain uniform motion; the corresponding speed is the terminal velocity of the particle ; When the terminal velocity is smaller, the longer the particles are suspended in the gas, thereby avoiding the rapid sedimentation and aggregation of dust; the terminal velocity is calculated using Stokes' law in fluid mechanics; the terminal velocity is inversely proportional to the kinematic viscosity of the gas. The greater the kinematic viscosity of the gas, the smaller the terminal velocity of the particles. When the terminal velocity of the particles is smaller, the terminal velocity will have a smaller offsetting effect on the external airflow, thereby making it easier for the particles to be driven by the airflow to move, thereby forming a more irregular movement, thereby increasing the degree of disorder of the particles), thereby enabling the raw material powder to remain in a relatively stable suspended state in the mixing device for a longer time, thereby being driven by the airflow to achieve a longer period of movement, thereby increasing the probability of collision between the raw material particles, thereby improving the uniformity of the mixing of the raw materials, avoiding the raw material powder from forming non-sticky clumps when entering the mixing device, and then rapidly settling downward under the action of gravity, thereby causing uneven mixing, thereby improving the mixing uniformity of the raw material powder, thereby improving the uniformity of the floor coating.

[0059] In the above step S4, the mist mixture A is locally accelerated along the path where the mist mixture A is transferred by the airflow.

[0060] During operation, after the mist mixture A is sprayed out, the gaps between the mist particles are relatively small, and under the action of the mutual attraction between the particles, there is a risk that the small mist particles will aggregate into large particles, which will lead to an increase in the particles of the powder of the formed mixture A, which will lead to a decrease in the fineness of the separation of the mixture A, which will cause the fineness of the floor coating to decrease, and thus the quality of the floor coating to decrease. At the same time, since the powder particles of the formed mixture A are uneven in size, the mixing of the produced epoxy floor coating is uneven, and the quality of the floor coating is reduced; therefore, in this scheme, by transferring the mixture A in the mist The mixture A is locally accelerated along the path, for example, the mist of the mixture A is accelerated by a fast airflow, so that the distance between the mists of the mixture A is pulled closer in the accelerated area, thereby avoiding the re-aggregation between the mists, and thus avoiding the uneven size of the powder particles of the formed mixture A, thereby ensuring the mixing uniformity of the produced floor coating, thereby improving the quality of the floor coating, and at the same time, the powder particles of the formed mixture A can be made smaller, thereby improving the finer mixing between the powder A in the mixing area and the other additives, thereby improving the fineness of the produced floor coating, thereby improving the quality of the floor coating.

[0061] The pigment added to the epoxy resin floor coating is an inorganic pigment aqueous solution; the air pressure in the area where the mixture A enters after being sprayed out in the above step S3 is 0.3-0.5 atmospheres.

[0062] During operation, since inorganic pigments are a type of inorganic salt, (since inorganic salts will form water, cations, and water and anions after dissolving in water, after heating and stirring, the formed water, cations, and water and anions are dispersed in the molecules of the epoxy resin, and due to the mutual attraction between water, cations, and water and anions, the traction of the liquid relative to the surface molecules can be increased, and the macroscopic surface increases the surface tension of the liquid phase.) Since the addition of inorganic salt aqueous solution to the epoxy resin can increase the surface tension of the epoxy resin, the sprayed mist mixture A can be more easily formed into a spherical shape (since the liquid particles are located in the gas, the surface tends to shrink under the action of surface tension, and the sphere is the most stable surface form, so the liquid usually forms a sphere under the action of surface tension); the powder particles of the formed mixture A are spherical, and since the sphere has a smaller stacking angle and the movement resistance between the spherical particles is smaller, the powder has better fluidity, which can reduce the powder mixing process. At the same time, due to the low-pressure environment, the particles of the sprayed mixture A are subject to less resistance from the air, which reduces the probability of deformation caused by the resistance of the particles, thereby improving the sphericity of the powder particles of the mixture A, thereby improving the mixing uniformity of the floor coating; at the same time, under negative pressure conditions, the surface tension of the mist mixture A can be increased (the surface tension formation mechanism is explained as follows: the liquid surface is the interface between the water phase and the gas phase, and the molecules in the interface layer are subject to a force from the water phase molecules that is greater than the force from the gas phase molecules. Therefore, the surface molecules are subject to the force of being pulled into the water phase, causing the surface to have a tendency to automatically shrink to a minimum; the reduction in air pressure reduces the force of the gas phase on the water surface, thereby increasing the surface tension), thereby further improving the sphericity of the powder particles of the mixture A, thereby improving the fluidity of the powder of the mixture A, thereby improving the mixing uniformity of the floor coating, thereby improving the quality of the floor coating.

[0063] After the mist mixture A is accelerated, it is decelerated again, and the mixture is cooled while being decelerated; the deceleration path length is not less than 1-2 meters, and the movement speed of the mist mixture A after deceleration is uniform, and the movement speed is 0.5-0.6 m / s.

[0064] During operation, the epoxy resin in the molten state cannot maintain a good spherical shape due to the high-speed operation, which will increase the resistance between the powder particles of the mixture A, thereby affecting the uniformity of the floor coating. Therefore, in this scheme, the accelerated particles are subjected to a deceleration treatment. After the deceleration treatment, the resistance encountered by the particles is reduced, and the particles can form a better spherical structure under the action of surface tension, thereby improving the fluidity of the formed powder, thereby improving the uniformity of the mixed material, and thereby improving the uniformity of the floor; at the same time, the mist mixture is preliminarily cooled during the deceleration treatment, thereby forming a relatively hard surface layer on the surface of the particles, thereby avoiding the fusion of the powder particles during the deceleration process, thereby ensuring the consistency of the powder particles, thereby improving the uniformity of the mixed material, and thereby improving the uniformity of the floor coating.

[0065] The heating method in the above step S6 is microwave heating.

[0066] During operation, if conductive heating is used for heating and softening, the heating time of each area of ​​the mixed powder will be inconsistent, and the melted floor coating that is heated first will flow in the gaps of the unmelted floor coating, thereby destroying the formed uniform powder structure, and causing uneven floor coating. At the same time, due to the inconsistent heating time of each area, thermal aging will occur in the area that has been heated for a long time, thereby reducing the quality of the epoxy floor coating. Therefore, in this scheme, microwave heating is used for heating. Microwave heating utilizes the vibration of the material particles themselves, thereby achieving simultaneous heating of the material, and ensuring that the heating temperature of each part remains basically consistent, thereby making the heating time of each part basically the same, thereby avoiding local thermal aging caused by different heating times, thereby ensuring the consistency of the quality of the floor coating, and at the same time reducing the flow of the material, thereby maintaining the uniformity of the melted mixed powder, thereby ensuring the uniformity of the floor coating.

[0067] The stirring method in the above step S6 is vibration stirring.

[0068] During operation, after the epoxy resin and additives are processed, all the materials are separated into independent small particles. Then, after melting, the small particles need to be fused with each other to realize the production of epoxy resin floor coating. Since the particles are small, there is no need for large-scale stirring when fusing the particles. Therefore, in this solution, the material is vibrated for a period of time, and the vibration causes the material to move with a certain amplitude during the melting process, thereby accelerating the fusion of the materials. Therefore, it is possible to accelerate the mixing of the materials without the need for large-scale stirring, thereby improving the mixing efficiency.

[0069] The present invention also discloses a method for laying epoxy resin floor coating, comprising the following steps:

[0070] M1: Grind the paved floor, then clean it. After the floor is dry, apply a layer of water-based epoxy resin glue on the floor. The amount of application should not exceed 0.5kg / ㎡.

[0071] M2: Then set the template at the edge of the ground to be paved and seal the joints of the template;

[0072] M3: Then, the powder of the mixture B obtained in the above step S5 is spread on the ground, and the powder of the mixture B is spread flat by a leveling device;

[0073] M4: The mixed powder is then heated by a heating device, and the heated epoxy resin coating is vibrated by a vibrating plate;

[0074] M5: The surface of the epoxy resin floor coating is then heated by hot air, and then the laying of the epoxy resin floor coating is completed.

[0075] During work, when laying epoxy resin floor, there are many gaps and convex and concave structures on the ground, and there is often a lot of air in the gaps and convex and concave structures. The epoxy resin floor has a large viscosity. When the space in the gap shell convex and concave structure is occupied by the epoxy resin floor coating, the internal air is squeezed out. At this time, the upper epoxy resin blocks the air flow path, and more bubbles are formed inside the epoxy resin floor, which leads to poor quality of epoxy resin floor laying. Therefore, in this solution, the ground is polished to reduce the convex and concave structure of the ground, which can Reduce the bubbles inside the floor when it is laid, thereby improving the quality of the floor after laying; then apply water-based epoxy resin glue on the polished ground, thereby increasing the contact strength between the laid epoxy resin floor coating and the ground, thereby preventing the floor from peeling, thereby improving the quality of the floor; then by laying the powder on the ground, due to the better flow phase between the powders, the floor can have better flatness during paving, and there are gaps between the powders, and then when the floor melts, the internal bubbles can flow to the outside along the gaps between the powders, thereby reducing the amount of bubbles inside the floor, thereby improving the quality of floor laying.

[0076] During operation, the pigment and epoxy resin are first mixed, and the activity of the epoxy resin molecules is increased by heating, thereby reducing the viscosity of the epoxy resin, thereby improving the cutting effect of the stirring rod on the epoxy resin during the stirring process, thereby improving the fineness of the stirred mixture A, and thereby improving the uniformity of the mixing of the pigment and the epoxy resin; then the mixture A is sprayed outward by high-pressure spraying. Since the mixture A is heated, the mixture A has better fluidity, thereby improving the uniformity of atomization during the spraying process (due to the high fluidity of the mixture A, the adhesion between the mixture A is low, thereby making the mixture A easier to separate, and atomization is also a form of separation, thereby making it easier to atomize the mixture A during the atomization process). At the same time, since the temperature of the mixture A is increased when it is transferred to the spraying device, the temperature drop of the mixture A caused by the transfer during the transfer process can be reduced, thereby ensuring the fluidity of the mixture A during the spraying, thereby ensuring the quality of the spraying, and thereby ensuring the quality of the atomization; after the mixture A becomes a mist, the mist mixture is then cooled, and the mist mixture A After cooling, it freezes into a solid state to form the powder of mixture A. Then, the powder of mixture A, silicon powder and modified additive powder (wherein the modified additive includes a curing agent, a dispersant, a defoaming agent and a leveling agent, and the preparation method is consistent with the above-mentioned method for preparing the powder of mixture A, by stirring and mixing the additives, then atomizing by high-pressure spraying, and then forming the modified additive powder by freezing). Since all the substances are in powder state, during mixing, the disturbance of the airflow can drive all the powders to move, and at the same time, due to the mutual interaction between the disturbed airflows, The particles collide with each other, and the various components can be evenly mixed. After becoming powder, there will be certain gaps between the powders under the drive of the airflow, and thus it can be more easily mixed during the mixing process, thereby improving the uniformity of the mixing. At the same time, because the epoxy resin is cut before mixing, the fineness of the mixed coating can be improved, thereby improving the quality of the epoxy resin floor coating. After mixing, the mixing zone is heated to realize the conversion of the mixture from solid to fluid, thereby facilitating the storage, transportation and use of the coating.Since all the components of the epoxy resin floor coating are in powder form after treatment, in this scheme, the powder of mixture A is blown into the mixing device through a fan. Driven by the fan, the powder particles of mixture A are separated from each other, and the gaps between the powder particles are increased. The remaining powder is then blown into the mixing device, and a turbulent airflow is introduced into the interior of the mixing device, so that the powder particles of various raw materials can collide irregularly inside, so that the raw material powders can be mixed evenly. At the same time, since the gas filled in the mixing device is a gas with high dynamic viscosity, the sedimentation rate of the raw material powder caused by its own gravity is small (the gas resistance of an object moving in a gas is usually positively correlated with the speed of the object relative to the gas; when small particles such as dust are in free fall, the gas resistance will gradually increase and eventually equal to its own gravity, and the particles will maintain uniform motion; the corresponding speed is the terminal speed of the particle The smaller the terminal velocity, the longer the particles remain suspended in the gas, thus preventing dust from settling and aggregating rapidly. The terminal velocity is inversely proportional to the kinematic viscosity of the gas. The greater the kinematic viscosity of the gas, the smaller the terminal velocity of the particles. The smaller the terminal velocity of the particles, the smaller the offsetting effect of the terminal velocity on the external airflow, making it easier for the particles to be driven by the airflow, resulting in more irregular movement and increasing the degree of particle disorder. This allows the raw material powder to remain in a relatively stable suspended state in the mixing device for a longer period of time. Driven by the airflow, the particles can move for a longer period of time, increasing the probability of collision between the raw material particles and improving the uniformity of the raw material mixing. This avoids the raw material powder forming non-sticky clumps upon entering the mixing device and then rapidly settling downward under the action of gravity, resulting in uneven mixing. This improves the mixing uniformity of the raw material powder and, consequently, the uniformity of the floor coating.

[0077] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A method for preparing an epoxy resin floor coating, characterized in that: The following steps are involved: S1: Weighing 300-500 parts by weight of an epoxy resin and 30-50 parts by weight of a pigment; then stirring and mixing the weighed pigment and epoxy resin to form a mixture A; S2: The mixture A is then heated to 150-200° C., and the heated mixture A is then stirred a second time; S3: After the mixture A is evenly mixed, the temperature of the mixture A is raised to between 180° C. and 240° C., and the mixture A is added to the spraying device. The heated mixture A is then atomized and sprayed by the spraying device to form a mist-like mixture A; S4: The misted mixture A is then transferred to a freezing device by an airflow, and the atomized mixture A is frozen by the freezing device to form a solid powdered mixture A; S5: Then, the powdered mixture A is added to an air flotation device, and the powdered mixture A is randomly distributed in the cavity of the air flotation device. Then, 40 parts by weight of silicon powder and 30 parts by weight of a modifying additive powder are introduced into the cavity, and the mixture is stirred and mixed by airflow to obtain a mixture B. S6: putting the mixture B into the stirring equipment, then heating the mixture B, stirring the mixture B while heating, and stopping the stirring and heating after the mixture B becomes a fluid state, thereby completing the preparation of the floor coating.

2. The method for preparing an epoxy resin floor coating according to claim 1, wherein: The mixing method of the mixture A, silicon powder and modified additive powder comprises the following steps: Q1: The powder of mixture A is blown into the mixing device through a fan, and the wind speed blown by the fan is uniform and consistent, and the wind speed is 0.1-0.3m / s; Q2: The silicon powder and modified additive powder weighed in the above step are blown into the above mixing device through a blower; Q3: A turbulent airflow is then introduced into the mixing device to drive the internal materials to move and mix, wherein the gas medium of the turbulent airflow is a gas with a kinematic viscosity greater than 15 square millimeters per second; Q4: The mixed materials are then collected through a filtration device to obtain a mixture B.

3. The method for preparing an epoxy resin floor coating according to claim 2, wherein: In the above step S4, the mist mixture A is locally accelerated along the path where the mist mixture A is transferred by the airflow.

4. The method for preparing an epoxy resin floor coating according to claim 3, wherein: The pigment added to the epoxy resin floor coating is an inorganic pigment aqueous solution; the air pressure in the area where the mixture A enters after being sprayed out in the above step S3 is 0.3-0.5 atmospheres.

5. The method for preparing an epoxy resin floor coating according to claim 4, wherein: After the mist mixture A is accelerated, it is decelerated again, and the mixture is cooled while being decelerated; the deceleration path length is not less than 1-2 meters, and the movement speed of the mist mixture A after deceleration is uniform, and the movement speed is 0.5-0.6 m / s.

6. The method for preparing an epoxy resin floor coating according to claim 5, wherein: The heating method in the above step S6 is microwave heating.

7. The method for preparing an epoxy resin floor coating according to claim 6, wherein: The stirring method in the above step S6 is vibration stirring.

8. A method for laying an epoxy resin floor coating, suitable for the epoxy resin floor coating according to any one of claims 1 to 7; characterized in that: The following steps are involved: M1: Grind the paved floor, then clean it. After the floor is dry, apply a layer of water-based epoxy resin glue on the floor. The amount of application should not exceed 0.5kg / ㎡. M2: Then set the template at the edge of the ground to be paved and seal the joints of the template; M3: Then, the powder of the mixture B obtained in the above step S5 is spread on the ground, and the powder of the mixture B is spread flat by a leveling device; M4: The mixed powder is then heated by a heating device, and the heated epoxy resin coating is vibrated by a vibrating plate; M5: The surface of the epoxy resin floor coating is then heated by hot air, and then the laying of the epoxy resin floor coating is completed.

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