Low-temperature fast-curing powder coating and preparation method thereof

Abstract

The invention discloses a low-temperature fast-curing powder coating and a preparation method thereof, and relates to the technical field of powder coatings. The device comprises a bottom plate, a primary material stirring tank is arranged at the top of the bottom plate, a mixing extruder is arranged at the top of the bottom plate, a pulverizer is arranged at the top of the bottom plate, and an adjustable stirring device is arranged at the bottom of the primary material stirring tank. Through the arrangement of the adjustable stirring device, the angle of the stirring plate can be adjusted according to the viscosity of materials and stirring requirements in the stirring process, and the stirring plate can adapt to different stirring states through a hinged structure of the adjusting plate and the connecting plate, so that the stirring uniformity and efficiency are greatly improved; according to the powder coating preparation device, the phenomenon of caking or non-uniformity of materials in the stirring process is effectively avoided, the quality stability of powder coatings is ensured, the applicability of the device is enhanced, and the powder coating preparation requirements of various different formulas and processes can be met.

Description

Technical Field

[0001] This invention relates to the field of powder coating technology, specifically to a low-temperature rapid-curing powder coating and its preparation method. Background Technology

[0002] In the field of powder coating technology, traditional preparation methods often suffer from high curing temperatures and long curing times, which not only increases energy consumption but also limits the application of powder coatings on some temperature-sensitive substrates.

[0003] According to a public disclosure (publication number: CN118685106A), a superhydrophobic powder coating and its preparation method are disclosed, comprising: selecting materials with surface interface effects and polycrystalline structures as multi-level rough structure materials, and pretreating them with surfactants respectively; mixing fluorocarbon modified resin, polyurethane powder coating crosslinking agent, and polyurethane resin using ball milling technology; continuously stirring the mixture, adding the pretreated materials with surface interface effects and the pretreated polycrystalline structures to form a multi-level rough structure; adding low surface energy materials and continuing stirring to reduce surface energy and enhance hydrophobicity; adding a gloss enhancer, benzoin, coating additives, and polytetrafluoroethylene wax, performing heat treatment, and curing with ultraviolet light; thereby giving the superhydrophobic coating strong waterproof, antifouling, and self-cleaning capabilities, making it difficult for water droplets to remain on the coating surface, and making it easy for stains and dust to be washed away by rainwater.

[0004] While the aforementioned applications achieved superhydrophobic properties through complex preparation processes and the addition of various materials, the overall preparation process was energy-intensive and had a long preparation cycle. It also placed stringent requirements on equipment, resulting in high production costs. Furthermore, the mixing process lacked flexibility and was difficult to adapt to the characteristics of different materials, which could easily lead to uneven mixing and material agglomeration, thus affecting the quality stability of the powder coating. Therefore, we propose a low-temperature rapid curing powder coating and its preparation method. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a low-temperature, rapid-curing powder coating and its preparation method, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a low-temperature rapid curing powder coating and its preparation method, comprising a base plate, a primary material mixing tank disposed on the top of the base plate, a mixing extruder disposed on the top of the base plate, a pulverizer disposed on the top of the base plate, and an adjustable stirring device disposed on the bottom of the primary material mixing tank.

[0007] The adjustable stirring device includes a lower mounting plate, which is fixedly connected to the top of the initial material mixing tank. A motor is fixedly connected to the top of the lower mounting plate, and a drive gear is fixedly connected to the output shaft of the motor. A main shaft is rotatably connected through the bottom of the initial material mixing tank. A driven gear is fixedly connected to one end of the main shaft. A scraper is fixedly connected to the circumferential surface of the main shaft. An adjusting plate is fixedly connected to the circumferential surface of the main shaft. A connecting plate is hinged to the adjusting plate at the end away from the main shaft, and a stirring plate is fixedly connected to the connecting plate at the end away from the adjusting plate.

[0008] According to the above technical solution, the side of the scraper abuts against the inner wall of the initial material mixing tank. The scraper is arranged in a circular array along the vertical central axis of the main shaft, which effectively scrapes off the material attached to the inner wall of the initial material mixing tank, avoids material residue causing waste and affecting the subsequent mixing effect, and ensures the consistency of the initial environment for each mixing.

[0009] According to the above technical solution, the driving gear and the driven gear mesh with each other to realize the power transmission of the stirring device, which has a compact structure and high transmission efficiency.

[0010] According to the above technical solution, a dust collection device is provided at the bottom of the initial material mixing tank. The dust collection device includes a dust hood, which is fixedly connected to the bottom of the initial material mixing tank. A drive shaft is fixedly connected to the bottom of the initial material mixing tank. A second pulley is rotatably connected to the circumferential surface of the drive shaft. A belt is provided on the circumferential surface of the second pulley. A first pulley is fixedly connected to the circumferential surface of the motor output shaft. A fan blade is fixedly connected to the bottom of the second pulley. A negative pressure fan is fixedly connected through and to the side of the dust hood. A suction pipe is fixedly connected to the top of the dust hood. An annular suction cup is fixedly connected to the end of the suction pipe away from the dust hood. This prevents dust from flying and polluting the working environment, and also reduces material waste.

[0011] According to the above technical solution, the second pulley is connected to the first pulley by a belt drive, and the rotation of the motor ultimately causes the fan blades to rotate to generate suction, thereby realizing the dust collection function.

[0012] According to the above technical solution, the dust removal hood is equipped with filter cotton inside, and the inner wall of the annular suction cup is provided with through holes. The filter cotton can effectively filter the sucked-in dust and prevent it from entering subsequent equipment or being discharged into the air. The through holes ensure that the annular suction cup can evenly adsorb the dust generated in the initial material mixing tank, thereby improving the dust collection effect.

[0013] According to the above technical solution, a quantitative feeding device is provided at the bottom of the initial material mixing tank. The quantitative feeding device includes a feeding hood, which is fixedly connected to the bottom of the initial material mixing tank. A feeding motor is fixedly connected to the bottom of the initial material mixing tank, and a feeding plate is fixedly connected to the output shaft of the feeding motor. During rotation, the amount of material falling from the initial material mixing tank can be precisely controlled to achieve the function of quantitative feeding.

[0014] According to the above technical solution, the side cross-section of the feeding plate is set in a cross shape, which can periodically block and release materials, thereby accurately controlling the feeding amount, and the structure is simple. According to the above technical solution, the inside of the feeding hood is connected to the inside of the initial material mixing tank, so that the material can fall smoothly from the initial material mixing tank into the feeding hood, thereby realizing the quantitative feeding process.

[0015] This invention provides a low-temperature, rapid-curing powder coating and its preparation method. It has the following beneficial effects: (1) The present invention, through the setting of an adjustable stirring device, enables the stirring plate to be adjusted in angle according to the viscosity of the material and the stirring requirements during the stirring process. Through the hinge structure of the adjusting plate and the connecting plate, the stirring plate can adapt to different stirring states, thereby greatly improving the uniformity and efficiency of stirring, effectively avoiding the phenomenon of material clumping or unevenness during the stirring process, ensuring the quality stability of powder coating, enhancing the applicability of the device, and meeting the preparation of powder coatings with various different formulations and process requirements.

[0016] (2) The present invention, through the setting of the dust collection device, enables timely and effective adsorption of dust generated when the material is stirred in the initial material mixing tank. The motor drives the fan blades to rotate through the belt drive, and together with the negative pressure fan, it generates a strong suction force. The through holes in the inner wall of the annular suction cup adsorb the dust evenly. The dust enters the dust removal hood through the dust collection pipe and is filtered and intercepted by the internal filter cotton, preventing dust from flying and polluting the working environment, reducing material waste, protecting the health of the operators, and ensuring the smooth progress of the subsequent preparation process, thereby improving the cleanliness and environmental friendliness of the entire preparation process.

[0017] (3) The present invention enables precise control of the feeding amount when the material is conveyed from the initial material mixing tank to the mixing extruder by setting up a quantitative feeding device. The feeding motor drives the feeding plate to rotate. The side cross section of the feeding plate is cross-shaped. During the rotation, it periodically blocks and releases the material. By controlling the speed and rotation time of the feeding motor, the amount of material falling from the initial material mixing tank into the feeding hood can be accurately determined, thereby ensuring that the amount of material entering the mixing extruder is stable and meets the process requirements. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional front view of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention in a three-dimensional partial side view; Figure 3 This is a cross-sectional schematic diagram of the three-dimensional initial material mixing tank of the present invention; Figure 4 This is a schematic diagram of the structure at the three-dimensional principal axis of the present invention; Figure 5 This is a schematic diagram of the structure of the three-dimensional dust collection device of the present invention; Figure 6 This is a schematic diagram of the structure of the three-dimensional quantitative feeding device of the present invention; Figure 7 This is a schematic diagram of the bottom structure of the initial material mixing tank of the present invention.

[0019] In the diagram: 1. Base plate; 2. Initial material mixing tank; 3. Mixing extruder; 4. Crusher; 5. Adjustable mixing device; 501. Lower mounting plate; 502. Motor; 503. Drive gear; 504. Main shaft; 505. Driven gear; 506. Scraper; 507. Adjusting plate; 508. Connecting plate; 509. Mixing plate; 6. Dust collection device; 601. Dust hood; 602. Drive shaft; 603. Pulley 2; 604. Belt; 605. Pulley 1; 606. Fan blade; 607. Negative pressure fan; 608. Dust collection pipe; 609. Annular suction cup; 7. Quantitative feeding device; 701. Feeding hood; 702. Feeding motor; 703. Feeding plate. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Please see Figures 1-7 One embodiment of the present invention is: a low-temperature rapid curing powder coating, including a base plate 1, a primary material mixing tank 2 disposed on the top of the base plate 1, a mixing extruder 3 disposed on the top of the base plate 1, a pulverizer 4 disposed on the top of the base plate 1, and an adjustable stirring device 5 disposed on the bottom of the primary material mixing tank 2.

[0022] The adjustable stirring device 5 includes a lower mounting plate 501, which is fixedly connected to the top of the initial material mixing tank 2. A motor 502 is fixedly connected to the top of the lower mounting plate 501. A drive gear 503 is fixedly connected to the output shaft of the motor 502. A main shaft 504 is rotatably connected through the bottom of the initial material mixing tank 2. A driven gear 505 is fixedly connected to one end of the main shaft 504. A scraper 506 is fixedly connected to the circumferential surface of the main shaft 504. An adjusting plate 507 is fixedly connected to the circumferential surface of the main shaft 504. A connecting plate 508 is hinged to the end of the adjusting plate 507 away from the main shaft 504. A stirring plate 509 is fixedly connected to the end of the connecting plate 508 away from the adjusting plate 507.

[0023] The side of the scraper 506 abuts against the inner wall of the initial material mixing tank 2. Several scrapers 506 are arranged in a circular array along the vertical central axis of the main shaft 504 to effectively scrape off the material attached to the inner wall of the initial material mixing tank 2, avoid material residue causing waste and affecting the subsequent mixing effect, and ensure the consistency of the initial environment for each mixing.

[0024] The driving gear 503 and the driven gear 505 mesh with each other to realize the power transmission of the stirring device. The structure is compact and the transmission efficiency is high.

[0025] During use, the operator places the material into the initial material mixing tank 2 and starts the motor 502. The motor 502 drives the drive gear 503 to rotate. Since the drive gear 503 and the driven gear 505 mesh with each other, they drive the main shaft 504 to rotate. The scraper 506 on the main shaft 504 rotates accordingly, scraping off the material adhering to the inner wall of the initial material mixing tank 2 to prevent material residue. The adjusting plate 507 can be adjusted in angle via screw connection. The connecting plate 508 changes position as the angle of the adjusting plate 507 changes, thereby driving the mixing plate 509 to stir the material in the initial material mixing tank 2 in different postures, so that the material is mixed evenly. During the stirring process...

[0026] Please see Figures 1-7Based on the above embodiments, in another embodiment of the present invention, a dust collection device 6 is provided at the bottom of the initial material mixing tank 2. The dust collection device 6 includes a dust hood 601, which is fixedly connected to the bottom of the initial material mixing tank 2. A drive shaft 602 is fixedly connected to the bottom of the initial material mixing tank 2. A second pulley 603 is rotatably connected to the circumferential surface of the drive shaft 602. A belt 604 is provided on the circumferential surface of the second pulley 603. A first pulley 605 is fixedly connected to the circumferential surface of the output shaft of the motor 502. A fan blade 606 is fixedly connected to the bottom of the second pulley 603. A negative pressure fan 607 is fixedly connected through and to the side of the dust hood 601. A suction pipe 608 is fixedly connected to the top of the dust hood 601. An annular suction cup 609 is fixedly connected to the end of the suction pipe 608 away from the dust hood 601, which avoids dust flying and causing pollution to the working environment, and also reduces material waste.

[0027] The second pulley 603 is connected to the first pulley 605 by the transmission of the belt 604. The rotation of the motor 502 ultimately causes the fan blade 606 to rotate, generating suction and realizing the dust collection function.

[0028] The dust collector 601 is equipped with filter cotton inside, and the inner wall of the annular suction cup 609 has through holes. The filter cotton can effectively filter the sucked-in dust and prevent it from entering subsequent equipment or being discharged into the air. The through holes ensure that the annular suction cup 609 can evenly adsorb the dust generated in the initial material mixing tank 2, thereby improving the dust collection effect.

[0029] The bottom of the initial material mixing tank 2 is equipped with a quantitative feeding device 7, which includes a feeding cover 701. The feeding cover 701 is fixedly connected to the bottom of the initial material mixing tank 2. A feeding motor 702 is fixedly connected to the bottom of the initial material mixing tank 2. The output shaft of the feeding motor 702 is fixedly connected to a feeding plate 703. During rotation, the amount of material falling from the initial material mixing tank 2 can be precisely controlled to achieve the function of quantitative feeding.

[0030] The side section of the feeding plate 703 is designed in a cross shape, which can periodically block and release materials, thereby precisely controlling the feeding amount. It also has a simple structure. The inside of the discharge hood 701 is connected to the inside of the initial material mixing tank 2, so that the material can fall smoothly from the initial material mixing tank 2 into the discharge hood 701, thereby realizing the quantitative discharge process.

[0031] During operation, pulley 605 on the output shaft of motor 502 drives pulley 603 to rotate via belt 604. The fan blades 606 at the bottom of pulley 603 rotate to generate suction, and the negative pressure fan 607 operates, causing the annular suction cup 609 to suck the dust generated in the initial material mixing tank 2 into the dust collection hood 601 through the dust collection pipe 608. The filter cotton inside the dust collection hood 601 filters the dust, preventing it from entering subsequent equipment or being emitted into the air, ensuring a clean working environment and reducing material waste. When mixing reaches a certain time... After the materials are evenly mixed, the feeding motor 702 is started, which drives the feeding plate 703 to rotate. Because the feeding plate 703 has a cross-shaped side section, it can periodically block and release materials during rotation. The materials fall from the initial material mixing tank 2 into the feeding hood 701. Through precise control of the feeding plate 703, quantitative feeding is achieved. After the materials exit, they enter the mixing extruder 3 on the bottom plate 1. The mixing extruder 3 further mixes and extrudes the materials to achieve a suitable state and shape. The extruded materials are then conveyed to the crusher 4, which crushes the materials into suitable particle sizes to meet the requirements of low-temperature rapid-curing powder coatings.

[0032] A low-temperature rapid-curing powder coating and its preparation method, comprising the following steps: Step 1: Put the raw materials into the initial mixing tank 2 according to the proportion, start the adjustable mixing device 5, and the motor 502 drives the mixing components to work, so that the materials are fully mixed and uniform. At the same time, the dust collection device 6 removes dust.

[0033] Step 2: After the mixture is evenly mixed, start the quantitative feeding device 7. The feeding motor 702 drives the feeding plate 703 to rotate, precisely controlling the feeding amount. The material enters the mixing extruder 3 for further processing.

[0034] Step 3: The extruded material is conveyed to the crusher 4 and crushed to a suitable particle size, finally producing a powder coating that meets the requirements for low-temperature rapid curing, thus completing the entire preparation process.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A low temperature fast curing powder coating comprising a base sheet (1), characterized in that: The top of the bottom plate (1) is provided with a primary material stirring tank (2), the top of the bottom plate (1) is provided with a mixing extruder (3), the top of the bottom plate (1) is provided with a crusher (4), the bottom of the primary material stirring tank (2) is provided with an adjustable stirring device (5); The adjustable stirring device (5) comprises a lower mounting plate (501), the lower mounting plate (501) is fixedly connected to the top of the primary material stirring tank (2), the top of the lower mounting plate (501) is fixedly connected with a motor (502), the output shaft of the motor (502) is fixedly connected with a driving gear (503), the bottom of the primary material stirring tank (2) penetrates and is rotatably connected with a main shaft (504), one end of the main shaft (504) is fixedly connected with a driven gear (505), the circumferential surface of the main shaft (504) is fixedly connected with a scraper (506), the circumferential surface of the main shaft (504) is fixedly connected with an adjusting plate (507), the adjusting plate (507) is hingedly connected with a connecting plate (508) away from one end of the main shaft (504), and the connecting plate (508) is fixedly connected with a stirring plate (509) away from the adjusting plate (507).

2. A low temperature fast curing powder coating according to claim 1, characterized in that: The side surface of the scraper (506) abuts against the inner wall of the primary material stirring tank (2), the number of the scrapers (506) is several, and the scrapers (506) are arranged in an annular array along the vertical central axis of the main shaft (504).

3. A low temperature fast curing powder coating according to claim 2, characterised in that: The driving gear (503) and the driven gear (505) are in mesh with each other.

4. A low temperature fast curing powder coating according to claim 3, characterised in that: The bottom of the primary material stirring tank (2) is provided with a dust suction device (6), the dust suction device (6) comprises a dust removal cover (601), the dust removal cover (601) is fixedly connected to the bottom of the primary material stirring tank (2), the bottom of the primary material stirring tank (2) is fixedly connected with a transmission shaft (602), the circumferential surface of the transmission shaft (602) is rotatably connected with a pulley two (603), the circumferential surface of the pulley two (603) is provided with a belt (604), the circumferential surface of the output shaft of the motor (502) is fixedly connected with a pulley one (605), the bottom of the pulley two (603) is fixedly connected with a fan blade (606), the side surface of the dust removal cover (601) penetrates and is fixedly connected with a negative pressure fan (607), the top of the dust removal cover (601) is fixedly connected with a dust suction pipe (608), and one end of the dust suction pipe (608) away from the dust removal cover (601) is fixedly connected with an annular suction disc (609).

5. A low temperature fast curing powder coating according to claim 4, characterised in that: The pulley two (603) and the pulley one (605) are in transmission connection through the belt (604).

6. A low temperature fast curing powder coating and a process for its preparation according to claim 5, characterized in that: The inside of the dust removal cover (601) is provided with filter cotton, and the inner wall of the annular suction disc (609) is provided with a through hole.

7. A low temperature fast curing powder coating according to claim 6, characterised in that: The bottom of the primary material stirring tank (2) is provided with a quantitative discharging device (7), the quantitative discharging device (7) comprises a discharging cover (701), the discharging cover (701) is fixedly connected to the bottom of the primary material stirring tank (2), the bottom of the primary material stirring tank (2) is fixedly connected with a discharging motor (702), and the output shaft of the discharging motor (702) is fixedly connected with a discharging plate (703).

8. A low temperature fast curing powder coating according to claim 7, characterised in that: The side section of the blanking plate (703) is provided with a cross shape.

9. A low temperature fast curing powder coating according to claim 8, characterised in that: The inside of the blanking cover (701) is connected with the inside of the primary material stirring tank (2).

10. A low temperature fast curing powder coating and a method of preparing the same according to claim 9, comprising the following steps: Step one: Put the raw materials into the primary material stirring tank (2) according to the proportion, start the adjustable stirring device (5), the motor (502) drives the stirring assembly to work, so that the materials are fully mixed and uniform, and the dust suction device (6) adsorbs the dust. Step two: after mixing uniformly, start the quantitative blanking device (7), the blanking motor (702) drives the blanking plate (703) to rotate, accurately controls the blanking amount, and the materials enter the mixing extruder (3) for further processing. Step three: the extruded materials are conveyed to the pulverizer (4), are pulverized to reach the appropriate particle size, and finally are made into the powder coating meeting the low temperature fast curing requirement, and the whole preparation process is completed (4).

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