Preparation method and equipment of high-strength rubber and application of high-strength rubber to rubber roof tiles

Abstract

The invention discloses a preparation method and equipment of high-strength rubber and application of the high-strength rubber to a rubber roof tile, the roof tile is in a plate shape, the middle of the roof tile is provided with two annular plates which are concavely arranged and have the same thickness, and reinforcing ribs are fixed in arc-shaped plates. The high-strength rubber disclosed by the invention has flame retardance and can effectively improve the safety of buildings; secondly, the tile is small in specific gravity, soft in finished product and extremely small in high-altitude falling damage, so that the tile is light and convenient to transport and mount; furthermore, the rubber tile has excellent waterproof performance, rainwater leakage can be effectively prevented, and a building structure is protected; meanwhile, the rubber tile has a good heat insulation effect, indoor temperature fluctuation can be effectively reduced, noise interference is reduced, and the living comfort is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber, and particularly to a preparation method and equipment for high-strength rubber and its application to rubber roofing tiles. Background Art

[0002] With the rapid development of the construction industry and the increasing requirements for the living environment by people, traditional tile materials such as cement tiles, fired clay tiles, glazed tiles, roof ceramic tiles, and aluminum alloy tiles, although meeting the basic construction needs to a certain extent, their inherent defects have gradually emerged, making the market's demand for new tile materials increasingly urgent.

[0003] Among traditional tile materials, cement tiles, glazed tiles, and ceramic tiles rely on a large amount of natural resources such as sand and cement during installation. The overexploitation and use of these resources not only damage the environment but also exacerbate the depletion of resources. At the same time, these tiles are easily affected by thermal expansion and contraction during use, resulting in breakage and shedding, increasing the risk of falling from a height and posing a threat to personnel safety. Although aluminum alloy tiles are lightweight, they are prone to generating noise on rainy days and have poor heat insulation effects, further restricting their application scope.

[0004] In this context, the research and development of high-strength rubber material roofing tiles have emerged. Rubber, as a high-performance elastic material, has many advantages. First of all, rubber roofing tiles have flame retardancy, which can effectively improve the safety of buildings; secondly, their specific gravity is small, making the tiles themselves light and convenient for transportation and installation; furthermore, rubber roofing tiles have excellent waterproof performance, which can effectively prevent rainwater leakage and protect the building structure; at the same time, rubber roofing tiles also have good heat insulation effects, which can effectively reduce indoor temperature fluctuations, reduce noise interference, and improve living comfort.

[0005] Therefore, this application proposes a preparation method and equipment for high-strength rubber and its application to rubber roofing tiles. Summary of the Invention

[0006] The purpose of the present invention is to solve the above technical problems, and to propose a preparation method and equipment for high-strength rubber and its application to rubber roofing tiles.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions: A method for preparing high-strength rubber, and the specific preparation steps are as follows: Put the main material, carbon black, flame retardant, anti-aging agent, vulcanizing agent, and liquid auxiliary agent into the internal mixer with the cooperation of a pumping mechanism. The input sequence is the main material → 1 / 2 of the carbon black → flame retardant → anti-aging agent → the remaining carbon black → liquid auxiliary agent → vulcanizing agent. The rotation speed of the internal mixer is 40 - 60 rpm, and the main material is bitten and stirred by the biting spiral blade; the temperature is controlled by a heating mechanism: the initial stage ≤ 120 °C, and the final stage discharge temperature ≤ 150 °C; the mixing time is 8 - 12 minutes, the Mooney viscosity is controlled at 60 ± 5, and after the rubber compound is sheeted, it is cooled to room temperature and stored for more than 24 hours to obtain high-strength rubber; The material of the main material is ethylene propylene diene monomer rubber or chloroprene rubber, and the treatment steps of the main material are as follows: Cut the main material into blocks with a volume of 5 - 10 cm³; Preheat the cut main material to 60 °C to soften it.

[0008] Preferably, the carbon black is in powder form and passes through a 100-mesh sieve to remove lumps.

[0009] Preferably, the flame retardant is a mixture of aluminum hydroxide and a phosphorus-nitrogen-based flame retardant, the anti-aging agent is a mixture of an anti-aging agent and an ultraviolet absorber, and the vulcanizing agent is a mixture of sulfur and an accelerator.

[0010] The present invention also discloses a preparation device for high-strength rubber. The internal mixer includes a frame, on which a mounting plate is rotatably installed. The mounting plate is provided with an internal mixing box. The upper end of the internal mixing box is provided with a hopper. The internal mixing box is penetrated by two rotating tubes that can rotate synchronously. Hollow columns communicated with the rotating tubes are fixed on both of the two rotating tubes, and biting spiral blades are fixed on the hollow columns. A heating box for containing liquid is installed on the mounting plate. A heating mechanism is installed on the heating box. A pumping mechanism is installed on the mounting plate. The pumping mechanism transports the liquid in the heating box into the two hollow columns to heat the hollow columns and the biting spiral blades through heat transfer, and the liquid in the hollow columns can circulate between the heating boxes. An upper top bolt assembly that can float up and down is installed below the fixing plate at the upper end of the feed hopper.

[0011] Preferably, the heating mechanism includes a distribution box installed on the heating box, and a serpentine electric heating tube is installed on the distribution box and is located inside the heating box.

[0012] Preferably, transmission gears are installed on both of the two rotating tubes, and the two transmission gears are meshed with each other. A motor is installed on the internal mixing box, and the output end of the motor is fixedly connected with a driving shaft. Synchronous gears are installed on both the driving shaft and the rotating tube, and the two synchronous gears are connected by a synchronous belt.

[0013] Preferably, the pumping mechanism includes a circular plate fixed on the drive shaft. An installation seat is mounted on the mounting plate, and an active piston cylinder is mounted on the installation seat. A first piston is slidably connected in the active piston cylinder. A connecting rod is hinged to the first piston, and the connecting rod is eccentrically rotatably mounted on the circular plate. Rotary joints are mounted at both ends of the two rotating pipes, and the two rotary joints are connected by a U-shaped pipe. The two U-shaped pipes are respectively connected to a first delivery pipe and a second delivery pipe. The first delivery pipe is connected to the heating tank, and the second delivery pipe can be connected to the active piston cylinder. An outlet pipe and an inlet pipe are mounted on the active piston cylinder. A first one-way valve is mounted on the outlet pipe, and a second one-way valve is mounted on the inlet pipe. The inlet pipe is connected to the heating tank.

[0014] Preferably, the upper plug assembly includes a passive piston cylinder penetrating and fixed on the fixing plate. The outlet pipe and the second delivery pipe are both connected to the passive piston cylinder. A second piston is slidably connected in the passive piston cylinder. A spring is fixed to the upper end of the second piston, and the upper end of the spring is fixedly connected to the upper end of the passive piston cylinder. A power rod is fixed to the bottom of the second piston, and a pressing plate for use in cooperation with the internal mixer is fixed to the bottom of the power rod. Guide material slopes are provided at the upper ends on both sides of the pressing plate.

[0015] Preferably, the outlet pipe and the second delivery pipe are vertically distributed on the passive piston cylinder, and the outlet pipe and the second delivery pipe are located on the upper and lower sides of the second piston.

[0016] The present invention also discloses a rubber roofing tile, and the preparation steps of the rubber roofing tile are as follows: S1, calendering process: calendering is carried out by a three-roll calender. The roll temperature is: upper roll 80 °C / middle roll 70 °C / lower roll 60 °C, the film thickness is 1.5 - 3.0 mm, and the calendering speed is 10 - 15 m / min; S2, film cutting: the cutting size is calculated according to the tile length + 5% shrinkage allowance; S3, vulcanization molding: a hydraulic flat vulcanizer is used with a pressure of 15 - 20 MPa, a temperature of 150 - 160 °C, and a time of 30 - 60 min; during the initial stage of vulcanization, the mold is opened for exhaust 2 - 3 times, each time for 2 - 3 seconds; S4, post-vulcanization treatment: trimming the flash with a numerical control gate cutter, and the residual flash ≤ 0.5 mm; S5, packaging treatment: single tiles are covered with PE dust-proof films, 10 tiles are bundled and fixed with woven belts and packed in boxes, and batch numbers, production dates, and weather resistance grades are printed on the outer box labels.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The high-strength rubber has flame retardancy, which can effectively improve the safety of buildings. Secondly, its specific gravity is small, making the tiles themselves light and convenient for transportation and installation. Moreover, the rubber tiles have excellent waterproof performance, which can effectively prevent rainwater leakage and protect the building structure. At the same time, the rubber tiles also have good heat insulation effect, which can effectively reduce the indoor temperature fluctuation, reduce noise interference and improve the living comfort.

[0018] 2. The motor works to drive the drive shaft to rotate. Through a series of transmissions, the two hollow columns rotate relative to each other, and then drive the two meshing spiral blades to rotate relative to each other. By the rotation of the meshing spiral blades, the main material can be heated and stirred.

[0019] 3. The heated liquid oil is transported into the rotating tube through the U-shaped tube and the rotary joint, then transported into the hollow column, then transported into the U-shaped tube and the rotary joint on the other side, and finally transported into the heating tank through the first delivery pipe to realize the recycling of the liquid oil; through heat transfer, the meshing spiral blades can be heated, and the rotating meshing spiral blades can heat the main material to soften it.

[0020] 4. When the first piston moves away from the circular plate, the liquid oil in the active piston cylinder can be transported into the liquid outlet pipe. The liquid oil in the liquid outlet pipe is transported into the passive piston cylinder. The increase of the liquid oil in the passive piston cylinder drives the second piston to move downward. The downward movement of the second piston drives the power rod to move downward, and then drives the pressing plate to move downward. In this way, the material rubber can be extruded and limited so that it is continuously subjected to mechanical actions such as shearing and tearing to achieve the purpose of uniform mixing.

[0021] 5. Liquid oil is transported into the passive piston cylinder. Part of the oil body is transported into the U-shaped tube through the second delivery pipe. When the passive piston cylinder is no longer pressurized and the oil body is discharged through the second delivery pipe, under the action of the spring, the second piston can move upward, and then drive the power rod and the pressing plate to move upward until the oil body cannot be discharged from the second delivery pipe; when liquid oil is transported into the passive piston cylinder again, the above state will appear again. In this way, the pressing plate moves up and down. Through the reciprocating movement of the upper plug assembly, the mechanical stress can be dispersed and the service life of the internal mixer can be extended.

[0022] 6. Due to the reciprocating movement of the pressing plate up and down, when the pressing plate moves upward, part of the carbon black falls into the internal mixer. In this way, the carbon black can be added to the internal mixer multiple times. Since the main material is continuously stirred, the main material can be evenly mixed with the stirred material.

[0023] In summary, the rubber material of the present invention has flame retardancy, light weight and high strength; by the motor working to realize the rotation of the hollow column and the meshing spiral blades and transport the heated liquid oil, the main material can be preheated and softened and heated subsequently. There is no need for preheating equipment. The pressing plate is set to extrude the material so that the main material can be torn and mixed, and the stress can also be reduced, and the material can be added evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 FIG. 1 is a schematic structural view of a preparation device for a high-strength rubber proposed by the present invention; Figure 2 FIG. 2 is a rear view of a preparation device for a high-strength rubber proposed by the present invention; Figure 3 FIG. 3 is a schematic structural view of a synchronous gear in a preparation device for a high-strength rubber proposed by the present invention; Figure 4 FIG. 4 is a schematic structural view of a second piston in a preparation device for a high-strength rubber proposed by the present invention; Figure 5 FIG. 5 is a schematic structural view of a kneading box in a preparation device for a high-strength rubber proposed by the present invention; Figure 6 FIG. 6 is a schematic structural view of a serpentine electric heating tube in a preparation device for a high-strength rubber proposed by the present invention; Figure 7 FIG. 7 is a schematic structural view of a tile in a preparation device for a high-strength rubber proposed by the present invention; Figure 8 FIG. 8 is a schematic structural view of the other side of a tile in a preparation device for a high-strength rubber proposed by the present invention.

[0025] In the figures: 1 frame, 2 mounting plate, 3 kneading box, 4 hopper, 5 fixing plate, 6 passive piston cylinder, 7 heating box, 8 distribution box, 9 rotating pipe, 10 transmission gear, 11 rotary joint, 12 U-shaped pipe, 13 first conveying pipe, 14 second conveying pipe, 15 liquid outlet pipe, 16 active piston cylinder, 17 mounting seat, 18 motor, 19 circular plate, 20 first piston, 21 connecting rod, 22 liquid inlet pipe, 23 first one-way valve, 24 second one-way valve, 25 pressing plate, 26 material guiding inclined plane, 27 driving shaft, 28 synchronous belt, 29 synchronous gear, 30 second piston, 31 power rod, 32 hollow column, 33 engaging spiral blade, 34 serpentine electric heating tube, 35 spring. DETAILED DESCRIPTION OF THE INVENTION

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0027] A method for preparing high-strength rubber, and the specific preparation steps are as follows: The main material, carbon black, flame retardant, anti-aging agent, vulcanizing agent, and liquid auxiliary agent are fed into a kneader through a pumping mechanism. The feeding order is the main material → 1 / 2 of the carbon black → flame retardant → anti-aging agent → the remaining carbon black → liquid auxiliary agent → vulcanizing agent. The rotation speed of the kneader is 40 - 60 rpm, and the main material is bitten and stirred by the biting spiral blade 33. The temperature is controlled by a heating mechanism: the initial section ≤ 120 °C, and the final discharging temperature ≤ 150 °C; the mixing time is 8 - 12 minutes, and the Mooney viscosity is controlled at 60 ± 5 (ML1+4@125 °C). After the rubber compound is sheeted, it is cooled to room temperature and stored for more than 24 hours to obtain high-strength rubber. The main material is ethylene propylene diene monomer (EPDM) rubber or chloroprene rubber, accounting for 50 - 70%, with both weather resistance and elasticity. The treatment steps of the main material are as follows: Cut the main material into pieces with a volume of 5 - 10 cm³; Preheat the cut main material to 60 °C to soften it; Among them, the carbon black is in powder form and passes through a 100-mesh sieve, accounting for 20 - 30%, which improves tear resistance and removes lumps; the flame retardant is a mixture of aluminum hydroxide and phosphorus-nitrogen-based flame retardant, aluminum hydroxide (ATH) 15 - 25% + phosphorus-nitrogen-based flame retardant 3 - 5%; the anti-aging agent is a mixture of antioxidant and ultraviolet absorber, antioxidant RD (1 - 2%) + ultraviolet absorber (UV-531, 0.5 - 1%); the vulcanizing agent is a mixture of sulfur and accelerator, sulfur (1.5 - 2.5%) + accelerator CZ (1 - 1.5%).

[0028] As described above, the high-strength rubber produced has flame retardancy, which can effectively improve the safety of buildings; secondly, its specific gravity is small, making the tiles themselves light and convenient for transportation and installation; furthermore, the rubber tiles have excellent waterproof performance, which can effectively prevent rainwater leakage and protect the building structure; at the same time, the rubber tiles also have good heat insulation effect, which can effectively reduce the indoor temperature fluctuation, reduce noise interference, and improve the living comfort.

[0029] As Figures 1 to 6 shown, the present invention also discloses a preparation device for high-strength rubber. The kneader includes a frame 1, and a mounting plate 2 is rotatably installed on the frame 1. The side of the mounting plate 2 away from the heating box 7 is rotatably installed with the frame 1, and the mounting plate 2 is driven to rotate by a hydraulic cylinder so as to tilt the kneading box 3 to pour out the kneaded rubber.

[0030] The mounting plate 2 is installed with a kneading box 3. A hopper 4 is installed at the upper end of the kneading box 3. Two rotating pipes 9 that can rotate synchronously penetrate through the kneading box 3. Transmission gears 10 are installed on both of the two rotating pipes 9. The two transmission gears 10 are meshed with each other. A motor 18 is installed on the kneading box 3. The output end of the motor 18 is fixedly connected with a driving shaft 27. Synchronous gears 29 are installed on both the driving shaft 27 and the rotating pipe 9. The two synchronous gears 29 are connected by a synchronous belt 28.

[0031] Hollow columns 32 communicated with them are fixed on both of the two rotating pipes 9. Biting spiral blades 33 are fixed on the hollow columns 32. A heating box 7 for containing liquid is installed on the mounting plate 2. A heating mechanism is installed on the heating box 7. The heating mechanism includes a distribution box 8 installed on the heating box 7. A serpentine electric heating pipe 34 is installed on the distribution box 8. The serpentine electric heating pipe 34 is located inside the heating box 7. The liquid contained in the heating box 7 is heating oil, and its heating temperature can be higher than the temperature of water, which can meet the use requirements.

[0032] A pumping mechanism is installed on the mounting plate 2. The pumping mechanism includes a circular plate 19 fixed on the driving shaft 27. A mounting seat 17 is installed on the mounting plate 2. A main piston cylinder 16 is installed on the mounting seat 17. A first piston 20 is slidably connected inside the main piston cylinder 16. A connecting rod 21 is hinged to the first piston 20. The connecting rod 21 is eccentrically rotatably installed on the circular plate 19. Rotary joints 11 are installed at both ends of the two rotating pipes 9. The two rotary joints 11 are connected by a U-shaped pipe 12. The two U-shaped pipes 12 are respectively connected with a first delivery pipe 13 and a second delivery pipe 14. A check valve is installed on the second delivery pipe 14 to prevent backflow; The first delivery pipe 13 is connected with the heating box 7. The second delivery pipe 14 can be connected with the main piston cylinder 16. A liquid outlet pipe 15 and a liquid inlet pipe 22 are installed on the main piston cylinder 16. The liquid outlet pipe 15 and the second delivery pipe 14 are vertically distributed on the passive piston cylinder 6. The liquid outlet pipe 15 and the second delivery pipe 14 are located on the upper and lower sides of the second piston 30.

[0033] A first one-way valve 23 is installed on the liquid outlet pipe 15. The first one-way valve 23 only allows the liquid in the main piston cylinder 16 to flow into the liquid outlet pipe 15; A second one-way valve 24 is installed on the liquid inlet pipe 22. The liquid inlet pipe 22 is connected with the heating box 7. The second one-way valve 24 only allows the liquid in the heating box 7 to flow into the main piston cylinder 16.

[0034] The pumping mechanism transports the liquid in the heating box 7 into the two hollow columns 32 to heat the hollow columns 32 and the biting spiral blades 33 through heat transfer. And the liquid in the hollow columns 32 can circulate between the heating boxes 7. A fixing plate 5 is installed at the upper end of the feed hopper 4.

[0035] Below the fixed plate 5, an upper plug component capable of floating up and down is installed. The upper plug component includes a passive piston cylinder 6 fixedly penetrated on the fixed plate 5. The liquid outlet pipe 15 and the second conveying pipe 14 are both connected to the passive piston cylinder 6. A second piston 30 is slidably connected in the passive piston cylinder 6. A spring 35 is fixed to the upper end of the second piston 30. The upper end of the spring 35 is fixedly connected to the upper end of the passive piston cylinder 6. A power rod 31 is fixed to the bottom of the second piston 30. A pressing plate 25 used in cooperation with the internal mixer 3 is fixed to the bottom of the power rod 31. Guide material inclined surfaces 26 are provided at the upper ends on both sides of the pressing plate 25.

[0036] When using an internal mixer to process high-strength rubber, its specific working principle is as follows: Place the main material in the internal mixer 3, and then start the motor 18. The motor 18 drives the drive shaft 27 to rotate when it works. The drive shaft 27 drives the synchronous gear 29 to rotate. Under the transmission of the synchronous belt 28, the rotating pipe 9 rotates. The rotating pipe 9 drives the transmission gear 10 to rotate. Through the transmission of two transmission gears 10, the two rotating pipes 9 can rotate relatively, and then drive the two hollow columns 32 to rotate relatively, and then drive the two engaging spiral blades 33 to rotate relatively. Through the rotation of the engaging spiral blades 33, the main material can be heated and stirred; It should be noted that at this time, the serpentine electric heating tube 34 has already worked to heat the liquid oil in the heating tank 7. A thermometer can be set on the heating tank 7 to detect the oil temperature and keep it at about 60 degrees; The drive shaft 27 drives the circular plate 19 to rotate. The circular plate 19 drives the connecting rod 21 to rotate. The connecting rod 21 drives the first piston 20 to reciprocate. When the first piston 20 moves close to the circular plate 19, the heated liquid oil can be sucked into the active piston cylinder 16 through the liquid inlet pipe 22. When the first piston 20 moves away from the circular plate 19, the liquid oil in the active piston cylinder 16 can be conveyed into the liquid outlet pipe 15. The liquid oil in the liquid outlet pipe 15 is conveyed into the passive piston cylinder 6. The increase in the liquid oil in the passive piston cylinder 6 drives the second piston 30 to move downward. The second piston 30 moves downward to drive the power rod 31 to move downward, and then drives the pressing plate 25 to move downward. At this time, the spring 35 is stretched. Finally, the second piston 30 moves to below the second conveying pipe 14; It should be noted that at this time, liquid oil is being conveyed into the passive piston cylinder 6. Part of the oil body is conveyed into the U-shaped pipe 12 through the second conveying pipe 14. When the passive piston cylinder 6 is no longer pressurized and the oil body is discharged through the second conveying pipe 14, under the action of the spring 35, the second piston 30 can move upward, and then drive the power rod 31 and the pressing plate 25 to move upward until the oil body cannot be discharged from the second conveying pipe 14; when liquid oil is conveyed into the passive piston cylinder 6 again, the above state will appear again. In this way, the pressing plate 25 moves up and down. When the pressing plate 25 moves upward into the hopper 4 and is not located in the internal mixer 3, when the pressing plate 25 moves downward, it is located in the internal mixer 3; As described in the above continuous work, the heated liquid oil is conveyed through the U-shaped pipe 12 and the rotary joint 11 into the rotating pipe 9, then conveyed into the hollow column 32, then conveyed into the U-shaped pipe 12 and the rotary joint 11 on the other side, and finally conveyed into the heating tank 7 through the first conveying pipe 13 to realize the recycling of the liquid oil; the occlusal spiral blade 33 can be heated through heat transfer, and the rotating occlusal spiral blade 33 can heat the main material to soften it.

[0037] After the softening is completed, continue to heat the liquid oil to 120 °C. Then, the staff pours 1 / 2 of the carbon black along the inner wall of the hopper 4. The carbon black falls on the material guiding inclined plane 26 due to gravity. Since the pressing plate 25 moves up and down reciprocally, when the pressing plate 25 moves upward, part of the carbon black falls into the internal mixer 3. In this way, the carbon black can be added to the internal mixer 3 multiple times. Since the main material is continuously agitated, the main material can be evenly mixed during agitation; Similarly as described above, the flame retardant, anti-aging agent, remaining carbon black, liquid auxiliary agent, and vulcanizing agent can be gradually added into the internal mixer 3, which can ensure the effective and uniform mixing of the materials added later with the materials in the internal mixer 3, thereby improving the efficiency of preparing high-strength rubber; As described above, the preparation of high-strength rubber is completed.

[0038] As Figures 7 - 8 , the present invention also discloses a rubber roofing tile. The roofing tile is in a plate shape and has two annular plates with the same thickness and a depression in the middle. Reinforcing ribs are fixed inside the arc-shaped plate; High strength and durability: Through specific preparation steps and material ratios, the tiles use high-strength rubber as the main material, supplemented by the design of reinforcing ribs, significantly improving the overall strength and durability of the tiles, and ensuring the stability and reliability of the tiles during long-term use.

[0039] Flame retardant performance: A mixture of aluminum hydroxide and phosphorus-nitrogen-based flame retardants is added to the tiles, effectively improving the flame retardant performance of the tiles, reducing the fire risk, and thus enhancing the safety of the building.

[0040] Lightweight and easy to install: The small specific gravity of the rubber material makes the tiles themselves lightweight, which not only facilitates transportation but also greatly simplifies the installation process, reducing the installation cost and time.

[0041] Excellent waterproof performance: The rubber tiles have natural waterproof characteristics, which can effectively prevent rainwater leakage, protect the building structure from water damage, and extend the service life of the building.

[0042] Good heat insulation and noise reduction effects: The rubber tiles also exhibit good heat insulation performance, which can effectively reduce the temperature fluctuations indoors and provide a more comfortable living environment. At the same time, the rubber material itself has a certain sound absorption and noise reduction function, which helps to reduce noise interference and improve the living quality.

[0043] Weather resistance and elasticity: The main materials used are ethylene propylene diene monomer (EPDM) rubber or neoprene rubber. These materials have good weather resistance and elasticity, can adapt to various climate conditions, and maintain the stability and service life of the tiles.

[0044] Environmental protection and sustainability: Most of the materials used in the preparation process of the rubber tiles are environmentally friendly materials, and the rubber materials can be recycled, which conforms to the current development concept of green, environmental protection, and sustainability.

[0045] The preparation steps of the rubber roof tiles are as follows: S1, Calendering process: Calendering is carried out by a three-roll calender. The roll temperature is: upper roll 80°C / middle roll 70°C / lower roll 60°C. The thickness of the film is 1.5 - 3.0 mm, and the calendering speed is 10 - 15 m / min; S2, Film cutting: The cutting size is calculated according to the tile length + 5% shrinkage allowance; S3, Vulcanization and molding: A hydraulic flat vulcanizer is used with a pressure of 15 - 20 MPa, a temperature of 150 - 160°C, and a time of 30 - 60 min; During the initial stage of vulcanization, the mold is opened for exhaust 2 - 3 times, each time for 2 - 3 seconds; S4, Post-vulcanization treatment: A numerical control gate cutting machine is used to trim the flash, and the residual flash ≤ 0.5 mm; S5, Packaging treatment: Each single tile is covered with a PE dust-proof film. 10 tiles are bundled together and fixed with a woven belt and then packed into a box. The outer box label is printed with batch number, production date, and weather resistance grade.

[0046] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A method for preparing high-strength rubber, characterized in that: The specific preparation steps are as follows: main material, carbon black, flame retardant, anti-aging agent, vulcanizing agent, and liquid additive are put into an internal mixer with a pumping mechanism, and the order of putting in is main material→1 / 2 carbon black→flame retardant→anti-aging agent→remaining carbon black→liquid additive→vulcanizing agent, the speed of the internal mixer is 40-60rpm, and the main material is interlocked and stirred by interlocking spiral blades (33); the temperature is controlled by a heating mechanism: the initial stage is ≤120°C, and the final stage discharge temperature is ≤150°C; the mixing time is 8-12 minutes, the Mooney viscosity is controlled at 60±5, and the rubber material is cooled to room temperature after being discharged and stored for more than 24 hours to obtain high-strength rubber; The main material is EPDM rubber or chloroprene rubber, and the processing steps of the main material are: Cut the main material into pieces with a volume of 5-10cm³; Preheat the cut main material to 60°C to soften it.

2. A method for preparing high-strength rubber according to claim 1, characterized in that: The carbon black is in powder form and is sieved through a 100-mesh sieve to remove lumps.

3. A method for preparing high-strength rubber according to claim 1, characterized in that: The flame retardant is a mixture of aluminum hydroxide and phosphorus nitrogen flame retardant, the anti-aging agent is a mixture of an antioxidant and an ultraviolet absorber, and the vulcanizing agent is a mixture of sulfur and an accelerator.

4. An apparatus for preparing the high-strength rubber according to any one of claims 1 to 3, characterized in that: The internal mixer comprises a frame (1), a mounting plate (2) rotatably mounted on the frame (1), a mixing box (3) mounted on the mounting plate (2), a hopper (4) mounted on the upper end of the mixing box (3), two rotating tubes (9) that can rotate synchronously are penetrated through the mixing box (3), a hollow column (32) connected to the two rotating tubes (9) is fixed on each of the two rotating tubes (9), an interlocking spiral blade (33) is fixed on the hollow column (32), a heating box (33) containing liquid is mounted on the mounting plate (2), and a heating box (34) for heating liquid is mounted on the mounting plate (2). 7), a heating mechanism is installed on the heating box (7), and a pumping mechanism is installed on the mounting plate (2). The pumping mechanism transports the liquid in the heating box (7) to the two hollow columns (32) to heat the hollow columns (32) and the interlocking spiral leaves (33) through heat transfer, and the liquid in the hollow columns (32) can circulate between the heating boxes (7). A fixing plate (5) is installed at the upper end of the feed hopper (4), and an upper bolt assembly capable of floating up and down is installed below the fixing plate (5).

5. The high-strength rubber preparation equipment according to claim 4, characterized in that: The heating mechanism comprises a distribution box (8) mounted on a heating box (7), a serpentine electric heating tube (34) being mounted on the distribution box (8), and the serpentine electric heating tube (34) is located inside the heating box (7).

6. The high-strength rubber preparation equipment according to claim 4, characterized in that: The two rotating tubes (9) are both provided with transmission gears (10), the two transmission gears (10) are meshed with each other, the mixing box (3) is provided with a motor (18), the output end of the motor (18) is fixedly connected with a driving shaft (27), the driving shaft (27) and the rotating tube (9) are both provided with synchronous gears (29), and the two synchronous gears (29) are connected with each other via a synchronous belt (28).

7. The high-strength rubber preparation equipment according to claim 6, characterized in that: The pumping mechanism comprises a circular plate (19) fixed on a driving shaft (27), a mounting seat (17) mounted on the mounting plate (2), an active piston cylinder (16) mounted on the mounting seat (17), a first piston (20) slidably connected in the active piston cylinder (16), a connecting rod (21) hingedly connected to the first piston (20), the connecting rod (21) eccentrically rotatably mounted on the circular plate (19), two rotating tubes (9) are both mounted with rotating joints (11), the two rotating joints (11) are connected via a U-shaped tube (12) ), the two U-shaped tubes (12) are respectively connected to a first delivery tube (13) and a second delivery tube (14), the first delivery tube (13) is connected to a heating box (7), the second delivery tube (14) can be connected to an active piston cylinder (16), a liquid outlet tube (15) and a liquid inlet tube (22) are installed on the active piston cylinder (16), a first one-way valve (23) is installed on the liquid outlet tube (15), a second one-way valve (24) is installed on the liquid inlet tube (22), and the liquid inlet tube (22) is connected to the heating box (7).

8. The high-strength rubber preparation equipment according to claim 7, characterized in that: The upper push bolt assembly comprises a passive piston cylinder (6) which penetrates and is fixed on a fixed plate (5); the liquid outlet pipe (15) and the second delivery pipe (14) are both connected to the passive piston cylinder (6); a second piston (30) is slidably connected in the passive piston cylinder (6); a spring (35) is fixed to the upper end of the second piston (30); the upper end of the spring (35) is fixedly connected to the upper end of the passive piston cylinder (6); a power rod (31) is fixed to the bottom of the second piston (30); a pressing plate (25) used in conjunction with the internal mixing box (3) is fixed to the bottom of the power rod (31); and material guiding inclined surfaces (26) are provided at the upper ends of both sides of the pressing plate (25).

9. The high-strength rubber preparation equipment according to claim 8, characterized in that: The liquid outlet pipe (15) and the second delivery pipe (14) are distributed up and down on the passive piston cylinder (6), and the liquid outlet pipe (15) and the second delivery pipe (14) are located on the upper and lower sides of the second piston (30).

10. A rubber roof tile, made from the high-strength rubber according to any one of claims 1 to 3, the roof tile being plate-shaped and having two annular plates with a depression in the middle and the same thickness, and reinforcing ribs being fixed inside the arc-shaped plate.

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