Fluorocarbon coating as well as preparation method and equipment thereof

Abstract

The invention provides a fluorocarbon coating. A formula of the fluorocarbon coating comprises the following components in parts by weight: 10-15 parts of acrylic resin, 10-15 parts of a solvent, 8-20 parts of a pigment and 0.2-0.3 part of an auxiliary A, 70 to 75 parts of fluorocarbon resin, 0.2 to 0.3 part of an auxiliary agent B and 0.2 to 0.3 part of an auxiliary agent C. The prepared non-water-soluble fluorocarbon coating is superior to a water-based fluorocarbon coating in weather resistance, fluororesin is dissolved more sufficiently, the adhesive force is high, the drying speed is high, the leveling property is good, a paint film is compact and smooth, construction can be conducted within the temperature range of-5 DEG C to 40 DEG C, the chemical resistance is excellent, the crosslinking density is high, and acid, alkali and solvent resistance is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fluorocarbon coatings, and particularly to a fluorocarbon coating, a preparation method thereof, and an apparatus therefor. Background Art

[0002] Fluorocarbon coatings refer to coatings with fluororesin as the main film-forming substance; also known as fluorocarbon paints, fluorocoatings, fluororesin coatings, etc. Among various coatings, fluororesin coatings have particularly excellent properties due to the large electronegativity of the introduced fluorine element and the high energy of the carbon-fluorine bond. They have excellent weather resistance, heat resistance, low-temperature resistance, chemical resistance, and also have unique non-stick and low-friction properties. After decades of rapid development, fluorocoatings have been widely used in various fields such as construction, chemical industry, electrical and electronic industry, machinery industry, aerospace industry, and household products, becoming the coating category with the highest comprehensive performance after high-performance coatings such as acrylic coatings, polyurethane coatings, and silicone coatings.

[0003] However, the current waterborne fluorocarbon coatings have relatively poor weather resistance, and during construction, the substrate needs to be strictly degreased and derusted, with high requirements for substrate cleanliness, requiring a primer, the operation is relatively cumbersome, the drying speed is slow, relying on water evaporation, greatly affected by temperature and humidity, and at the same time, bubbles and shrinkage holes are likely to occur in a low-temperature and high-humidity environment; and different colors of fluorocarbon coatings require different mesh numbers of filter screens during filtration, so multiple filtering devices are needed to filter different colors of fluorocarbon coatings respectively, resulting in high procurement and later maintenance costs, large occupied space, and manual cleaning by staff is required after the filtering devices are used, increasing the labor burden of the staff. Summary of the Invention

[0004] The present invention discloses a fluorocarbon coating, a preparation method thereof, and an apparatus therefor, which solve the problems that the current waterborne fluorocarbon coatings have relatively poor weather resistance, rely on water evaporation during construction, are greatly affected by temperature and humidity, bubbles and shrinkage holes are likely to occur in a low-temperature and high-humidity environment, and multiple filtering devices are needed to filter different colors of fluorocarbon coatings respectively, resulting in high procurement and later maintenance costs and large occupied space.

[0005] To solve the above technical problems, the present invention specifically adopts the following technical solutions:

[0006] A fluorocarbon coating, the formula of which comprises the following parts by weight:

[0007] Comprising: 10 - 15 parts of acrylic resin, 10 - 20 parts of solvent, 8 - 20 parts of pigment, 0.2 - 0.3 part of A auxiliary agent; 70 - 75 parts of fluorocarbon resin, 0.2 - 0.3 part of B auxiliary agent, 0.2 - 0.3 part of C auxiliary agent.

[0008] Preferably, the solvent comprises 3 - 5 parts of ethylene glycol monobutyl ether and 7 - 15 parts of isophorone.

[0009] Preferably, the pigment is toner; the A additive is a dispersant, the B additive is a leveling agent, and the C additive is a defoaming agent.

[0010] A method for preparing a fluorocarbon coating comprises the following steps:

[0011] S1: Add acrylic resin, solvent and dispersant into the mobile cylinder after proportioning, and then use a high-speed disperser to stir the raw materials in the mobile cylinder. The speed of the high-speed disperser is 400r / min;

[0012] S2: After the raw materials in the mobile cylinder are evenly stirred, slowly add the pigment into the mobile cylinder for high-speed dispersion for 15-30 minutes. The speed of the high-speed disperser is 800-1000r / min.

[0013] S3: After the pigment is evenly mixed with the raw materials in the mobile cylinder, the dispersed materials in the mobile cylinder are transferred to the horizontal sander through a pneumatic diaphragm pump for grinding. Another clean mobile cylinder is placed at the discharge port of the horizontal sander to receive the materials. After the materials are ground, the fineness of the materials is below 30u and enters the clean mobile cylinder;

[0014] S4: Put the fluorocarbon resin into the mobile pull cylinder containing the ground material, and mix it with a high-speed disperser at a speed of 400r / min;

[0015] S5: After the materials are evenly mixed, add the leveling agent and defoaming agent and stir and mix;

[0016] S6: Filter the mixed materials and then package them.

[0017] Preferably, the machine for grinding black and white pigments in step S4 cannot grind other colors; the same machine is used to grind green, blue and purple, but the grinding order is green, blue and purple; the same machine is used to grind yellow, orange and red, but the grinding order is yellow, orange and red; when the operating temperature of the horizontal sander is higher than 45°C and the operating pressure is higher than 0.2MPa, the equipment alarms and shuts down the host and the feed pump; and after grinding of the same batch of production batch number, the grinder is cleaned and cleaned with a reserved solvent, and the solvent after cleaning is put into use as the raw material for the next batch of products with the same color number.

[0018] Preferably, in step S7, the material is filtered through a filter screen by potential difference, a filter screen of 150-250 mesh is used for solid color, and a filter screen of 80-150 mesh is used for metallic color.

[0019] A fluorocarbon paint screening device includes a box body. A connecting frame is fixed inside the box body. Fixed frames are provided on both sides of the connecting frame. A filter screen passing through the connecting frame and the two fixed frames is arranged inside the box body. The inner diameter of the filter holes on the filter screen increases sequentially from left to right. A winding rod rotatably connected inside the box body is provided on the side of the fixed frame away from the connecting frame. Both ends of the filter screen are respectively fixed on the two winding rods. A cleaning component for cleaning the filter screen is arranged inside the fixed frame.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The prepared water-insoluble fluorocarbon paint is superior to water-based fluorocarbon paint in weather resistance, with more sufficient dissolution of fluororesin, strong adhesion, fast drying speed, good leveling property, dense and smooth paint film, can be constructed within the temperature range of -5°C to 40°C, excellent chemical resistance, high cross-linking density, and resistant to acids, alkalis, and solvents. When the fluorocarbon paint needs to be screened after preparation, rotate the two winding rods in the same direction, adjust the inner diameter of the filter holes of the filter screen located inside the connecting frame, and then put the fluorocarbon paint into the connecting frame. After the fluorocarbon paint passes through the filter holes of the filter screen, the screening of the fluorocarbon paint is completed. When the used filter screen needs to be cleaned, the used part of the filter screen can be moved into the fixed frame, and then the filter screen can be cleaned through the cleaning component. The present invention can timely adjust the inner diameter of the filter holes of the filter screen according to the needs during the screening of the fluorocarbon paint, so as to facilitate the effective screening of the fluorocarbon paint, ensure the quality of the produced fluorocarbon paint, and there is no need for staff to manually clean the filter screen, reducing the labor burden of the staff. Description of the Drawings

[0022] Figure 1 It is a front view structural schematic diagram of the present invention;

[0023] Figure 2 It is a sectional structural schematic diagram of the present invention;

[0024] Figure 3 It is Figure 2 an enlarged structural schematic diagram of part A;

[0025] Figure 4 It is Figure 2 an enlarged structural schematic diagram of part B;

[0026] Figure 5 It is Figure 2 an enlarged structural schematic diagram of part C;

[0027] Figure 6 It is Figure 1 an enlarged structural schematic diagram of part D.

[0028] In the figure: 1. Box body; 11. Feeding port; 12. Opening; 13. Auxiliary rod; 2. Connecting frame; 21. Fixed frame; 22. Collection box; 23. Connecting plate; 24. First motor; 25. Collection frame; 3. Filter screen; 4. Winding rod; 41. Second motor; 5. Material discharging frame; 51. Partition board; 52. Material discharging pipe; 53. Counterweight ring; 6. Vertical plate; 61. Hydraulic rod; 62. Cleaning frame; 63. Lifting shell; 64. First automatic telescopic rod; 65. Circular shell; 66. Cylinder; 67. Second automatic telescopic rod; 68. Bearing strip; 7. Cleaning brush; 71. Connecting shell; 72. Slide block; 73. Lead screw; 74. Exhaust air plate; 8. Lifting frame; 81. First electric telescopic rod; 82. Hollow shell; 83. Water delivery pipe; 9. Moving frame; 91. Second electric telescopic rod; 92. Bearing plate. Detailed implementation mode

[0029] The following will combine the attached drawings and embodiments to elaborate on the specific content of the present invention in detail.

[0030] Embodiment 1

[0031] 15 parts of acrylic resin, 5 parts of ethylene glycol monobutyl ether, 15 parts of isophorone, 20 parts of black pigment, 0.3 part of dispersant, 75 parts of fluorocarbon resin, 0.3 part of leveling agent, 0.3 part of defoaming agent.

[0032] Weigh the raw materials according to the proportion. Put acrylic resin, ethylene glycol monobutyl ether, isophorone and dispersant into the mobile pulling cylinder (V0101A-P) by pneumatic diaphragm pump (P0101A-P) or manually. Then push the mobile pulling cylinder (the mobile pulling cylinder is equipped with pulleys for movement) to be fixed under the high-speed disperser (M0101A-B, MO102AL, M0201A-B, M0202A-E), and stir by using the high-speed disperser (the rotation speed of the high-speed disperser is 400r / min).

[0033] After stirring evenly, slowly put the black pigment into the mobile pulling cylinder (V0101A-P) and carry out high-speed dispersion for 30 minutes (the rotation speed of the high-speed disperser is about 1000r / min) to avoid the situation that the pigment is put in too fast and caking occurs, which is not easy to stir.

[0034] Push the moving pulling cylinder for the original dispersed materials from the high-speed disperser to the horizontal grinding machine (M0104A-F, M0105A-C, M0204A-F, M0205A-C), connect the pneumatic diaphragm pump of the horizontal grinding machine, and transfer the dispersed materials into the horizontal grinding machine through the pneumatic diaphragm pump for grinding. Another clean moving pulling cylinder (V0101A-P) is used to receive the materials at the discharge port of the horizontal grinding machine; during grinding, control the fineness of the materials well, filter through the filter cloth, and control the fineness of the materials below 30u. If the fineness of the materials does not meet the requirements after grinding once, grind twice; the horizontal grinding machine is a complete set of equipment, and the equipment is equipped with temperature and pressure detection. When the temperature and pressure exceed the limit (the operating temperature is higher than 45°C and the operating pressure is higher than 0.2MPa), the equipment alarms and shuts down the main machine and the feed pump;

[0035] After grinding is completed, clean the grinding machine with the reserved solvent, and use the cleaned solvent as the raw material for the next batch of products of the same color number for use;

[0036] In the moving pulling cylinder (V0101A-P) that receives the materials with qualified grinding fineness, add the measured fluorocarbon resin through the pneumatic diaphragm pump (P0101A-P) or manually; then push the moving pulling cylinder under the high-speed disperser (M0101A-B, M0102A-E, M0201A-B, M0202A-E) and fix it firmly. After mixing evenly with the high-speed disperser (the rotation speed of the high-speed disperser is about 400r / min), add the leveling agent and defoaming agent and stir and mix;

[0037] After the mixed materials are inspected and qualified, push the moving pulling cylinder to the lifting packaging platform, filter through a 150-mesh filter screen by the potential difference, and then package the finished products.

[0038] After the preparation is completed, perform coating and performance testing; the testing methods are as follows: surface drying time ≤ 60min (GB / T1728-2020), flexibility ≤ 1mm (GB / T1731), impact resistance 50cm (GB / T1732), tensile strength ≥ 10MPa (GB / T1040.3), no abnormality after 4000h of UVB aging (GB / T14522-2008);

[0039] In this embodiment: the surface drying time is 25min, the flexibility is 1mm, the impact resistance is 50cm, the tensile strength is 17MPa, and there is no abnormality after 4000h of UVB aging.

[0040] When testing other aspects, the adhesion: grade 0; scrub resistance: 5000 times without abnormality and no leakage of the bottom layer; film appearance: smooth; abrasion resistance: 5.8; chemical resistance performance: excellent; color fastness level is 0, and chalking level is 0.

[0041] As Figure 1 and Figure 2 shown, the present invention provides a fluorocarbon paint screening device, including a box body 1. A connecting frame 2 is fixed inside the box body 1. Fixed frames 21 are provided on both sides of the connecting frame 2. A filter screen 3 penetrating through the connecting frame 2 and the two fixed frames 21 is arranged inside the box body 1. The inner diameters of the filter holes on the filter screen 3 increase sequentially from left to right; a winding rod 4 rotatably connected inside the box body 1 is provided on the side of the fixed frame 21 away from the connecting frame 2. Both ends of the filter screen 3 are respectively fixed on the two winding rods 4. A cleaning assembly for cleaning the filter screen 3 is arranged inside the fixed frame 21. The bottoms of the connecting frame 2 and the fixed frame 21 respectively penetrate through the bottom of the box body 1. The filter screen 3 is spliced by filter screens with 80 - 250 meshes. When the fluorocarbon paint needs to be screened, according to the color and screening requirements of the fluorocarbon paint, the two winding rods 4 are rotated in the same direction to adjust the filter screen 3 so that the part of the filter screen 3 with the required mesh number is located inside the connecting frame 2; when the fluorocarbon paint is put into the connecting frame 2 and falls on the filter screen 3, the filter screen 3 can screen the fluorocarbon paint. After the fluorocarbon paint screening is completed, the two winding rods 4 continue to move in the same direction, so that the used part of the filter screen 3 enters one of the fixed frames 21, and then the cleaning assembly can clean the filter screen 3 to facilitate the subsequent continuous use of the filter screen 3.

[0042] As Figure 1 , Figure 2 and Figure 4 shown, the cleaning assembly includes a cleaning brush 7 arranged inside the fixed frame 21 and in contact with the top of the filter screen 3. A connecting shell 71 is fixed on the cleaning brush 7. A drain hole is opened at the bottom of the connecting shell 71. A hose penetrating through the box body 1 is communicated with the connecting shell 71. A slider 72 slidably connected to the inner wall of the fixed frame 21 is fixed on the cleaning brush 7. A lead screw 73 is threadedly connected to the slider 72. An exhaust plate 74 fixed to the top inside the box body 1 is arranged inside the fixed frame 21; a collection box 25 located below the filter screen 3 is fixed inside the fixed frame 21. Collection boxes 22 are fixed on both sides inside the connecting frame 2. Strip-shaped openings for the filter screen 3 to pass through are respectively opened on the connecting frame 2 and the fixed frame 21 (as shown in Figure 4 ), and the connection part of two adjacent filter screens with different mesh numbers is located inside the strip-shaped opening; the back of the box body 1 (taking Figure 1A servo motor is fixed in the orientation shown in the figure. The rotating shaft of the servo motor passes through the box body 1 and is fixed to the lead screw 73. There are two sliders 72 on the cleaning brush 7, and the two sliders 72 are symmetrically distributed left and right. A limiting rod that penetrates and is slidably connected to the slider 72 away from the lead screw 73 is fixed in the fixed frame 21, so as to enable the cleaning brush 7 to move back and forth more stably. After a part of the filter net 3 after use enters a fixed frame 21, the servo motor can be started to drive the lead screw 73 to rotate, so that the connecting shell 71 of the cleaning brush 7 moves, and the drain hole at the bottom of the connecting shell 71 is slightly oriented towards the bristles of the cleaning brush 7. When the external water source enters the connecting shell 71 through the hose and is discharged through the drain hole, the water can be sprayed onto the filter net 3. Coupled with the cleaning of the top of the filter net 3 by the cleaning brush 7, the filter net 3 can be cleaned. After the filter net 3 is cleaned, the water in the connecting shell 71 continues to be discharged and contacts the bristles of the cleaning brush 7, then the bristles can be cleaned. There is also a slight gap between the front and back of the filter net 3 and the inside of the fixed frame 21, so as to facilitate the impurities on the filter net 3 to fall off. When the fluorocarbon coating falls on the filter net 3, the area of the filter net 3 is large, and it will not cause the fluorocarbon coating to drip downward through the gap between the front or back of the filter net 3 and the inside of the connecting frame 2. The exhaust air plate 74 is hollow, and air outlet holes are opened at the bottom of the exhaust air plate 74. A duct that penetrates the box body 1 and is connected to an external warm air blower is communicated with the top of the exhaust air plate 74. When the warm air is discharged through the air outlet holes at the bottom of the exhaust air plate 74, the cleaned filter net 3 can be quickly dried, so as to be quickly put into subsequent use. The impurities washed off from the filter net 3 fall into the collection box 25 and are then discharged through the slag discharge pipe at the bottom of the collection box 25. When the part of the filter net 3 after use in the connecting frame 2 moves towards the fixed frame 21, the fluorocarbon coating that drips down to both sides inside the connecting frame 2 will enter the collection box 22, preventing the fluorocarbon coating from dripping randomly onto the ground. A discharge pipe (the discharge pipe is not shown in the figure) that penetrates the box body 1 is communicated with the collection box 22, and the discharge pipe can discharge the fluorocarbon coating collected in the collection box 22.

[0043] As Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, two symmetrically arranged connecting plates 23 are fixed to the bottom of the connecting frame 2. A blanking frame 5 is rotatably connected between the two connecting plates 23. A partition 51 is fixed inside the blanking frame 5. A blanking pipe 52 is slidably connected through the partition 51. Counterweight rings 53 are fixed to both ends of the blanking pipe 52. Concave holes adapted to the counterweight rings 53 are formed at the top and bottom of the partition 51. A first motor 24 for driving the blanking frame 5 is fixed to one of the connecting plates 23. Two second motors 41 are fixed to the box body 1. The rotating shafts of the two second motors 41 are respectively connected to the two winding rods 4. Openings 12 are formed on both sides of the box body 1. Auxiliary rods 13 rotatably connected inside the box body 1 are provided on both sides of the fixed frame 21. The bottom surface of the filter screen 3 contacts the top of the auxiliary rod 13. The blanking frame 5 can collect the fluorocarbon paint after screening by the filter screen 3. When the fluorocarbon paint enters the blanking frame 5 and is blocked by the partition 51, the fluorocarbon paint can be discharged through the blanking pipe 52. After the screening of the fluorocarbon paint is completed, the first motor 24 can be started to drive the blanking frame 5 to rotate (the rotating shaft of the first motor 24 passes through the connecting plate 23 and is fixed to the blanking frame 5 through a rotating rod. The other side of the blanking frame 5 is also rotatably connected to the other connecting plate 23 through a rotating rod). When the top and bottom of the blanking frame 5 are swapped, the counterweight rings 53 can make the blanking pipe 52 slide downward, so that the counterweight ring 53 at the top of the blanking pipe 52 at this time enters the concave hole on the partition 51, facilitating the cleaning of the parts of the partition 51, the blanking frame 5 and the blanking pipe 52 that were previously contaminated with fluorocarbon paint. After the inside of the blanking pipe 52 is cleaned, the bottom end of the blanking pipe 52 can be connected to an external feeding pipe, so that when screening another color of fluorocarbon paint, the fluorocarbon paint can be collected and packed in time. The first motor 24 and the second motors 41 are respectively servo motors. The second motors 41 can drive the winding rods 4 to rotate. The openings 12 are provided to facilitate the staff to repair and maintain the filter screen 3. The auxiliary rods 13 can assist the winding rods 4 to wind or unwind the filter screen 3.

[0044] As Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, a lifting frame 8 is provided inside the connection frame 2. A first electric telescopic rod 81 for driving the lifting frame 8 is provided on the box body 1. A hollow shell 82 is provided inside the lifting frame 8. Drainage holes are formed on the outer wall of the hollow shell 82. A water delivery pipe 83 passing through the box body 1 is communicated with the hollow shell 82; a moving frame 9 located below the hollow shell 82 penetrates through one side of the box body 1. A second electric telescopic rod 91 with a telescopic end connected to the moving frame 9 through a connecting rod is fixed on the box body 1. A bearing plate 92 with the top slidably connected to the bottom of the moving frame 9 is fixed on the box body 1. A feeding port 11 corresponding to the inside of the lifting frame 8 is formed at the top of the box body 1; a vertical plate 6 is fixed at the bottom of the fixed frame 21. A hydraulic rod 61 is fixed on one vertical plate 6. A cleaning frame 62 is fixed at the telescopic end of the hydraulic rod 61. A lifting shell 63 that can enter the blanking frame 5 is provided inside the cleaning frame 62. Round holes are formed on the side wall and the top surface of the lifting shell 63. A perforation corresponding to the counterweight ring 53 is formed on the lifting shell 63; a round shell 65 that can enter the blanking pipe 52 is provided in the perforation of the lifting shell 63. A cylinder 66 is fixed at the bottom of the round shell 65. Holes are formed on both the round shell 65 and the cylinder 66. Flexible hoses passing through the cleaning frame 62 are respectively communicated with the round shell 65 and the cylinder 66; a first automatic telescopic rod 64 and a second automatic telescopic rod 67 with telescopic ends respectively connected to the lifting shell 63 and the cylinder 66 are provided on the cleaning frame 62. A bearing strip 68 slidably connected to the bottom of the cleaning frame 62 is fixed between the two vertical plates 6. The telescopic end of the first electric telescopic rod 81 penetrates through the box body 1 and is fixed to a connection block connected to the lifting frame 8. When the fluorocarbon paint enters the connection frame 2 through the feeding port 11, the first electric telescopic rod 81 can be driven to drive the lifting frame 8 to move downward to contact the top of the filter screen 3. After the fluorocarbon paint falls on the filter screen 3, it is restricted within the lifting frame 8, avoiding the random flow of the fluorocarbon paint; when the screening of the fluorocarbon paint is completed, the first electric telescopic rod 81 can be driven to restore the lifting frame 8. The hollow shell 82 is arranged in an "O" shape. After the water delivery pipe 83 delivers water into the hollow shell 82, the water can be discharged through the drainage holes, and the water can timely wash the inner wall of the lifting frame 8 to avoid mixing different colors when limiting another kind of fluorocarbon paint later; when the inner wall of the lifting frame 8 is being cleaned, the telescopic end of the second electric telescopic rod 91 drives the moving frame 9 to enter the box body 1 through the connecting rod. After the moving frame 9 is located below the lifting frame 8, the waste water can be collected to avoid the waste water polluting the inner wall of the connection frame 2. The bearing plate 92 can increase the stability of the moving frame 9 during movement. The waste water in the moving frame 9 can be discharged through a rubber pipe communicated with the bottom of the moving frame 9;When the fluorocarbon coating has been screened, the hydraulic rod 61 can be activated to drive the cleaning frame 62 to move to directly below the blanking frame 5, and the blanking frame 5 is rotated 180°. Then, the first automatic telescopic rod 64 is activated to drive the lifting shell 63 into the blanking frame 5. A connecting pipe communicating with an external water source is connected to the bottom of the lifting shell 63. After water is transported into the lifting shell 63 and discharged through the round holes, the parts of the blanking frame 5 and the partition 51 that were previously contaminated with the fluorocarbon coating can be rinsed. There are also round holes on the inner wall of the perforated lifting shell 63. Therefore, the outer wall of the blanking pipe 52 and the counterweight ring 53 located at the bottom of the blanking pipe 52 can be rinsed, so that after the blanking frame 5 is subsequently flipped, it can continue to collect fluorocarbon coatings of other colors. After the second automatic telescopic rod 67 is activated, the round shell 65 can enter the blanking pipe 52, and the hose on the round shell 65 is communicated with an external water source, so that after water is discharged through the holes on the round shell 65, the inner wall of the blanking pipe 52 can be rinsed. The hose on the cylinder 66 is communicated with an external hot air blower, so that after the inner wall of the blanking pipe 52 is rinsed, the hot air blower is activated to discharge hot air through the perforations on the cylinder 66, and the inner wall of the blanking pipe 52 can be quickly air-dried. The waste water after cleaning can fall into the cleaning frame 62 and be collected, and then discharged through the waste discharge pipe communicated with the cleaning frame 62 (the waste discharge pipe is not shown in the figure). The fixed ends of the first automatic telescopic rod 64 and the second automatic telescopic rod 67 are respectively fixed to the bottom of the cleaning frame 62. The telescopic ends of the first automatic telescopic rod 64 and the second automatic telescopic rod 67 penetrate through the bottom of the cleaning frame 62. A corrugated pipe is fixed between the bottom inside the cleaning frame 62 and the bottom of the lifting shell 63, and a corrugated pipe is also fixed between the bottom inside the cleaning frame 62 and the bottom of the cylinder 66. The telescopic ends of the first automatic telescopic rod 64 and the second automatic telescopic rod 67 are respectively located inside the corrugated pipes. The number of the bearing bars 68 is two, and the two bearing bars 68 are symmetrically distributed front and back, which can increase the stability when the cleaning frame 62 moves.

[0045] Example 2

[0046] 10 parts of acrylic resin, 3 parts of ethylene glycol monobutyl ether, 7 parts of isophorone, 8 parts of yellow pigment, 0.2 part of dispersant, 70 parts of fluorocarbon resin, 0.2 part of leveling agent, 0.2 part of defoaming agent.

[0047] Weigh the raw materials according to the ratio. Put acrylic resin, ethylene glycol monobutyl ether, isophorone and dispersant into the mobile pulling tank (V0101A-P) with a pneumatic diaphragm pump (P0101A-P) or manually. Then, push the mobile pulling tank (the mobile pulling tank is equipped with pulleys for moving) to be fixed under the high-speed disperser (M0101A-B, MO102AL, M0201A-B, M0202A-E), and stir with the high-speed disperser (the rotation speed of the high-speed disperser is 400 r / min).

[0048] After stirring evenly, slowly pour the yellow pigment into the moving drawing tank (V0101A-P) and carry out high-speed dispersion for 30 minutes (the rotation speed of the high-speed disperser is about 1000 r / min);

[0049] Push the moving drawing tank of the original dispersed material from the high-speed disperser to the horizontal grinding machine (M0104A-F, M0105A-C, M0204A-F, M0205A-C), connect the pneumatic diaphragm pump of the horizontal grinding machine, and transfer the dispersed material into the horizontal grinding machine through the pneumatic diaphragm pump for grinding. Another clean moving drawing tank (V0101A-P) is used to receive the material at the discharge port of the horizontal grinding machine; during grinding, control the fineness of the material well, filter it through the filter cloth, and control the fineness of the material below 30u. If the fineness of the material does not meet the requirements after grinding once, grind it twice; the horizontal grinding machine is a complete set of equipment, and the equipment is equipped with temperature and pressure detection. When the temperature and pressure exceed the limit (the operating temperature is higher than 45°C and the operating pressure is higher than 0.2 MPa), the equipment alarms and shuts down the main engine and the feed pump;

[0050] After grinding is completed, clean the grinding machine with the reserved solvent, and use the cleaned solvent as the raw material for the next batch of products of the same color number;

[0051] In the moving drawing tank (V0101A-P) that receives the material with qualified grinding fineness, add the measured fluorocarbon resin through the pneumatic diaphragm pump (P0101A-P) or manually; then push the moving drawing tank under the high-speed disperser (M0101A-B, M0102A-E, M0201A-B, M0202A-E) and fix it firmly. Use the high-speed disperser to mix evenly (the rotation speed of the high-speed disperser is about 400 r / min), and then add the leveling agent and defoaming agent for stirring and mixing;

[0052] After the mixed material is qualified through inspection, push the moving drawing tank to the lifting packaging platform, filter it through a 200-mesh filter screen by the potential difference, and then package the finished product.

[0053] In this embodiment: the surface drying time is 20 minutes, the flexibility is 1 mm, the impact resistance is 50 cm, the tensile strength is 15.3 MPa, and there is no abnormality after 4000 hours of UVB aging;

[0054] When testing other aspects, the adhesion: grade 0; the scrub resistance: 5000 times without abnormality and no leakage of the bottom layer; the film appearance: smooth; the abrasion resistance: 5.5; the chemical resistance: excellent; the color fastness level is 0, and the chalking level is 0.

[0055] The equipment part is the same as that in Embodiment 1.

[0056] Example 3

[0057] 13 parts of acrylic resin, 4 parts of ethylene glycol monobutyl ether, 11 parts of isophorone, 15 parts of blue pigment, 0.2 parts of dispersant, 13 parts of fluorocarbon resin, 0.2 parts of leveling agent, 0.3 parts of defoaming agent.

[0058] Weigh the raw materials according to the proportion. Put acrylic resin, ethylene glycol monobutyl ether, isophorone and dispersant into the mobile pulling tank (V0101A - P) by pneumatic diaphragm pump (P0101A - P) or manually. Then push the mobile pulling tank (the mobile pulling tank is equipped with pulleys for movement) to be fixed under the high - speed disperser (M0101A - B, MO102AL, M0201A - B, M0202A - E), and stir by using the high - speed disperser (the rotation speed of the high - speed disperser is 400r / min).

[0059] After stirring evenly, slowly put the yellow pigment into the mobile pulling tank (V0101A - P) and carry out high - speed dispersion for 30min (the rotation speed of the high - speed disperser is about 1000r / min).

[0060] Push the mobile pulling tank of the original dispersed material from the high - speed disperser to the horizontal grinding machine (M0104A - F, M0105A - C, M0204A - F, M0205A - C). Connect the pneumatic diaphragm pump of the horizontal grinding machine, and transfer the dispersed material into the horizontal grinding machine through the pneumatic diaphragm pump for grinding. Use another clean mobile pulling tank (V0101A - P) to receive the material at the discharge port of the horizontal grinding machine. During grinding, control the fineness of the material well. Filter through the filter cloth to control the fineness of the material below 30u. If the fineness of the material cannot meet the requirements after grinding once, grind it twice. The horizontal grinding machine is a complete set of equipment, which is equipped with its own temperature and pressure detection. When the temperature and pressure exceed the limit (the operating temperature is higher than 45℃, the operating pressure is higher than 0.2MPa), the equipment alarms and shuts down the main engine and the feed pump.

[0061] After grinding, clean the grinding machine with the reserved solvent, and use the cleaned solvent as the raw material for the next batch of products of the same color number.

[0062] Put the metered fluorocarbon resin into the mobile pulling tank (V0101A - P) that receives the ground material with qualified fineness through the pneumatic diaphragm pump (P0101A - P) or manually. Then push the mobile pulling tank to be firmly fixed under the high - speed disperser (M0101A - B, M0102A - E, M0201A - B, M0202A - E), and use the high - speed disperser to mix evenly (the rotation speed of the high - speed disperser is about 400r / min), and then put in the leveling agent and defoaming agent for stirring and mixing.

[0063] After the mixed material is inspected and qualified, push the mobile pulling tank to the lifting packaging platform, filter through a 200 - mesh filter screen by the potential difference, and then package the finished product.

[0064] This embodiment: surface drying time is 30 min, flexibility is 1 mm, impact resistance is 13 MPa, and there is no abnormality after 4000 h of UVB aging

[0065] When testing other aspects, adhesion: grade 0; scrub resistance: no abnormality after 5000 times, no leakage of the underlying layer; film appearance: smooth; abrasion resistance: 6.1; chemical resistance: excellent; color fastness level is 0, chalking level is 0

[0066] The equipment part is the same as that in Embodiment 1

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention

Claims

1. A fluorocarbon coating, characterized in that, The formula includes the following parts by weight: 10-15 parts of acrylic resin, 10-20 parts of solvent, 8-20 parts of pigment, 0.2-0.3 parts of auxiliary agent A; 70-75 parts of fluorocarbon resin, 0.2-0.3 parts of auxiliary agent B, and 0.2-0.3 parts of auxiliary agent C.

2. The fluorocarbon coating according to claim 1, wherein: The solvent comprises 3-5 parts of ethylene glycol butyl ether and 7-15 parts of isophorone.

3. A fluorocarbon coating according to claim 1, characterized in that: The pigment is toner; the A auxiliary is a dispersant, the B auxiliary is a leveling agent, and the C auxiliary is a defoaming agent.

4. A method for preparing a fluorocarbon coating according to claim 3, characterized in that: The following steps are involved: S1: Add acrylic resin, solvent and dispersant into the mobile cylinder after proportioning, and then use a high-speed disperser to stir the raw materials in the mobile cylinder. The speed of the high-speed disperser is 400r / min; S2: After the raw materials in the mobile cylinder are evenly stirred, slowly add the pigment into the mobile cylinder for high-speed dispersion for 15-30 minutes. The speed of the high-speed disperser is 800-1000r / min. S3: After the pigment is evenly mixed with the raw materials in the mobile cylinder, the dispersed materials in the mobile cylinder are transferred to the horizontal sander through a pneumatic diaphragm pump for grinding. Another clean mobile cylinder is placed at the discharge port of the horizontal sander to receive the materials. After the materials are ground, the fineness of the materials is below 30u and enters the clean mobile cylinder; S4: Put the fluorocarbon resin into the mobile pull cylinder containing the ground material, and mix it with a high-speed disperser at a speed of 400r / min; S5: After the materials are evenly mixed, add the leveling agent and defoaming agent and stir and mix; S6: Filter the mixed materials and then package them.

5. A method for preparing a fluorocarbon coating according to claim 4, characterized in that: The machine for grinding black and white pigments in step S4 cannot grind other colors. The same machine is used to grind green, blue and purple, but the grinding order is green, blue and purple. The same machine is used to grind yellow, orange and red, but the grinding order is yellow, orange and red. When the operating temperature of the horizontal sander is higher than 45°C and the operating pressure is higher than 0.2MPa, the equipment alarms and shuts down the host and the feed pump. After grinding the same batch of production batches, the grinder is cleaned and cleaned with a reserved solvent. The solvent after cleaning is used as the raw material for the next batch of products with the same color number.

6. A method for preparing a fluorocarbon coating according to claim 4, characterized in that: In the step S7, the material is filtered through a filter screen by potential difference, a filter screen of 150-250 mesh is used for solid color, and a filter screen of 80-150 mesh is used for metallic color.

7. The fluorocarbon coating screening device according to claim 6, characterized in that: The invention comprises a box body (1), a connecting frame (2) is fixed in the box body (1), both sides of the connecting frame (2) are provided with fixing frames (21), a filter screen (3) is provided in the box body (1) and passes through the connecting frame (2) and the two fixing frames (21), and the inner diameter of the filter holes on the filter screen (3) increases from left to right; a winding rod (4) rotatably connected in the box body (1) is provided on the side of the fixing frame (21) away from the connecting frame (2), the two ends of the filter screen (3) are respectively fixed on the two winding rods (4), and a cleaning component for cleaning the filter screen (3) is provided in the fixing frame (21).

8. A fluorocarbon paint screening device according to claim 7, characterized in that: The cleaning component includes a cleaning brush (7) disposed within the fixed frame (21) and in contact with the top of the filter net (3). A connection shell (71) is fixed to the cleaning brush (7). Drainage holes are formed at the bottom of the connection shell (71). A hose passing through the box body (1) is communicated with the connection shell (71). A slider (72) slidably connected to the inner wall of the fixed frame (21) is fixed to the cleaning brush (7). A lead screw (73) is threadedly connected to the slider (72). An exhaust air plate (74) fixed to the inner top of the box body (1) is provided within the fixed frame (21). A collection frame (25) located below the filter net (3) is fixed within the fixed frame (21). Collection boxes (22) are fixed to both sides within the connection frame (2).

9. The fluorocarbon coating screening device according to claim 7, wherein: Two symmetrically arranged connecting plates (23) are fixed to the bottom of the connection frame (2). A blanking frame (5) is rotatably connected between the two connecting plates (23). A partition plate (51) is fixed within the blanking frame (5). A blanking pipe (52) slidably connected therethrough is provided on the partition plate (51). Counterweight rings (53) are fixed to both ends of the blanking pipe (52). Concave holes adapted to the counterweight rings (53) are formed at the top and bottom of the partition plate (51). A first motor (24) for driving the blanking frame (5) is fixed to one of the connecting plates (23). Two second motors (41) are fixed to the box body (1). The rotating shafts of the two second motors (41) are respectively connected to the two winding rods (4). Openings (12) are formed on both sides of the box body (1). Auxiliary rods (13) rotatably connected within the box body (1) are provided on both sides of the fixed frame (21). The bottom surface of the filter net (3) is in contact with the top of the auxiliary rods (13).

10. A fluorocarbon paint screening device according to claim 9, characterized in that: A lifting frame (8) is arranged inside the connecting frame (2). A first electric telescopic rod (81) for driving the lifting frame (8) is arranged on the box body (1). A hollow shell (82) is arranged inside the lifting frame (8). Drainage holes are formed in the outer wall of the hollow shell (82). A water delivery pipe (83) penetrating through the box body (1) is communicated with the hollow shell (82); A moving frame (9) located below the hollow shell (82) penetrates through one side of the box body (1). A second electric telescopic rod (91) whose telescopic end is connected to the moving frame (9) through a connecting rod is fixed on the box body (1). A bearing plate (92) whose top is slidably connected to the bottom of the moving frame (9) is fixed on the box body (1). A feed inlet (11) corresponding to the inside of the lifting frame (8) is formed in the top of the box body (1); A vertical plate (6) is fixed to the bottom of the fixed frame (21). A hydraulic rod (61) is fixed to one vertical plate (6). A cleaning frame (62) is fixed to the telescopic end of the hydraulic rod (61). A lifting shell (63) capable of entering the blanking frame (5) is arranged inside the cleaning frame (62). Round holes are formed in the side wall and the top surface of the lifting shell (63). A perforation corresponding to the counterweight ring (53) is formed in the lifting shell (63); A round shell (65) capable of entering the blanking pipe (52) is arranged in the perforation of the lifting shell (63). A cylinder (66) is fixed to the bottom of the round shell (65). Holes are formed in both the round shell (65) and the cylinder (66). Flexible hoses penetrating through the cleaning frame (62) are respectively communicated with the round shell (65) and the cylinder (66); A first automatic telescopic rod (64) and a second automatic telescopic rod (67) whose telescopic ends are respectively connected to the lifting shell (63) and the cylinder (66) are arranged on the cleaning frame (62). A bearing strip (68) slidably connected to the bottom of the cleaning frame (62) is fixed between the two vertical plates (6).

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