Montmorillonite powder modified polymeric elastomer waterproof coiled material and preparation device thereof

Abstract

The invention discloses a montmorillonite powder modified polymer elastomer waterproof coiled material and a preparation device thereof, and relates to the technical field of waterproof coiled material preparation, the montmorillonite powder modified polymer elastomer waterproof coiled material comprises an internal mixer, a pelletizing assembly and a molding press, the internal mixer is used for blending raw materials, the pelletizing assembly is used for pelletizing blended elastomers, and the molding press is used for molding the blended elastomers. The molding press is used for carrying out compression molding on an elastomer subjected to grain cutting, and the grain cutting assembly comprises a support on which a conveying motor is fixed; the conveying cylinder is fixed to the upper end face of the support, and a spiral conveying blade is rotationally arranged in the conveying cylinder and driven by the conveying motor; the feeding hole is fixed on the upper end surface of the conveying cylinder; the cooling assembly is fixed at the output end of the conveying cylinder; the fixing plate is fixed to the side, away from the conveying cylinder, of the cooling assembly through a plurality of stand columns. The pelletizing motor is fixed on one side of the fixed plate; the adjusting assembly is fixed to the other side of the fixing plate and is close to the cooling assembly.

Description

Technical Field

[0001] This invention relates to the field of waterproof membrane preparation technology, specifically to a montmorillonite powder modified polymer elastomer waterproof membrane and its preparation apparatus. Background Technology

[0002] Waterproof membranes are mainly used in building walls, roofs, tunnels, highways, landfills, etc., to resist external rainwater and groundwater seepage. They are flexible building materials that can be rolled up. The preparation of high-elasticity waterproof membranes requires steps such as blending, pelletizing, and molding to produce the membrane.

[0003] Existing high-elasticity waterproof membrane preparation equipment requires heating during pelletizing due to the high elasticity and ductility of the blended material. This results in low cooling efficiency, making the material prone to deformation during pelletizing. Furthermore, the reciprocating cutting action of the cutter generates frictional heat, leading to stringing and sticking to the cutter, which affects the cutting process. The current solution is underwater cutting, but this requires drying after cutting, increasing the workload.

[0004] To address the above problems, this invention provides a montmorillonite powder-modified polymer elastomer waterproof membrane and its preparation apparatus, thereby solving the aforementioned issues. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a montmorillonite powder modified polymer elastomer waterproof membrane preparation apparatus, comprising at least a mixer, a pelletizing assembly, and a molding press, wherein the mixer is used for blending raw materials, the pelletizing assembly is used for pelletizing the blended elastomer, and the molding press is used for molding the pelletized elastomer, characterized in that the pelletizing assembly comprises:

[0006] A support frame on which a conveyor motor is fixed;

[0007] A conveying cylinder is fixed to the upper end face of the support, and a spiral conveying blade is rotatably arranged inside it, the spiral conveying blade being driven by the conveying motor;

[0008] The feeding port is fixed to the upper end face of the conveying cylinder;

[0009] Cooling components are fixed at the output end of the conveyor cylinder;

[0010] The fixing plate is fixed to the side of the cooling assembly away from the conveying cylinder by multiple columns;

[0011] The pelletizing motor is fixed to one side of the fixed plate;

[0012] An adjustment component is fixed to the other side of the fixed plate and close to the cooling component.

[0013] Further, preferably, the cooling assembly includes:

[0014] The outer plate is fixed to the outer wall of the conveying cylinder;

[0015] The inner disc is fixed to the output end of the conveying cylinder and is coaxially arranged with the outer disc;

[0016] The extrusion rings are configured in two sets and coaxially fixed inside the inner disk, with multiple rings arranged circumferentially in each set.

[0017] Multiple cooling rings are configured and fixed inside the inner disk, and each corresponds to one of the multiple extrusion rings;

[0018] A connecting pipe is connected to a plurality of cooling rings corresponding to a set of the extrusion rings;

[0019] A connecting port is provided between the two cooling rings that correspond to the radial direction of the inner disk;

[0020] Multiple air outlets are configured and circumferentially opened between the coaxially arranged extrusion rings and cooling rings;

[0021] A rotating shaft is rotatably positioned at the axial center of the inner disk, and a guide fan is fixed on it, the guide fan being located inside the inner disk.

[0022] Furthermore, preferably, the outer wall of the inner disk is symmetrically fixed with a liquid inlet and a liquid outlet, the liquid inlet being connected to an external coolant supply device; the liquid outlet being connected to an external extraction device; the outer wall of the inner disk is also fixed with an air inlet, the air inlet being connected to an external cooling gas supply device; the air inlet being connected to one of the cooling rings; an isolation plate is fixed on the side of the inner disk near the conveying cylinder; a liquid chamber is opened inside the inner disk; the liquid chamber is connected to the liquid inlet and the liquid outlet.

[0023] Furthermore, preferably, the air outlet is arranged at an angle, with its axial extension line intersecting the axis of the extrusion ring, and the diameter of the air outlet located below the extrusion ring is larger than that of the air outlet located above the extrusion ring.

[0024] Furthermore, preferably, one end of the rotating shaft extends out of the inner disk and is fixed with a plurality of limiting strips.

[0025] Further, preferably, the adjustment component includes:

[0026] The drive shaft is fixed on the output shaft of the pelletizing motor;

[0027] A drive shaft is fixed at the end of the transmission shaft away from the pelletizing motor, and a plurality of limiting strips are fixed on its outer wall;

[0028] The adjusting shaft is slidably mounted on the drive shaft and the rotating shaft, and is restricted from rotating relative to the drive shaft and the rotating shaft by the first limiting strip and the second limiting strip;

[0029] Multiple pelletizing blades are configured and circumferentially fixed to the outer wall of the adjusting shaft;

[0030] At least two electric telescopic rods are symmetrically fixed on the fixed plate, and an adjustment disc is fixed at their output end. The adjustment disc is rotatably and non-slidingly mounted on the outer wall of the adjustment shaft.

[0031] At least two sleeves are symmetrically fixed to the fixing plate;

[0032] The guide post is slidably disposed inside the sleeve, and one end is fixedly connected to the adjusting plate.

[0033] Furthermore, preferably, the pelletizing motor rotates counterclockwise, and the blade direction of the pelletizing knife is the same as the rotation direction of the pelletizing motor.

[0034] A montmorillonite powder modified polymer elastomer waterproof membrane is prepared using the montmorillonite powder modified polymer elastomer waterproof membrane preparation apparatus according to any one of claims 1-7.

[0035] Compared with the prior art, the present invention provides a montmorillonite powder modified polymer elastomer waterproof membrane and its preparation apparatus, which has the following beneficial effects:

[0036] In this invention, when the coolant is injected, it can be agitated by the guide fan, thereby disrupting the coolant boundary layer and significantly improving the heat exchange efficiency between the coolant and the inner plate and cooling ring. This prevents the internal gas temperature of the cooling ring from becoming too high, which could soften the outer wall of the material during ejection. Furthermore, the cooling gas ejected through the inclined air outlet, especially the large-diameter one at the bottom, forms an upward airflow that acts on the freshly extruded strip, effectively counteracting the strip's own weight and preventing excessive sagging and deformation. This guides the strip to maintain a relatively straight line, creating favorable conditions for subsequent precise pelletizing. At the moment the pelletizer cuts the strip, the continuous airflow quickly blows the cut particles away from the cutting area, preventing them from sticking together or adhering to the blade. This ensures that the particles fall independently and smoothly. The cold airflow directly washes over the surface of the strip and the pelletizer, providing additional surface cooling, accelerating the solidification of the strip's skin, and simultaneously carrying away the heat generated by the high-speed cutting friction of the pelletizer, preventing the blade from overheating and causing the material to melt and stick to the blade. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the pelletizing component of a montmorillonite powder modified polymer elastomer waterproof membrane preparation device.

[0038] Figure 2 A cross-sectional schematic diagram of the cooling component structure of a montmorillonite powder modified polymer elastomer waterproof membrane preparation device;

[0039] Figure 3 This is a schematic diagram of the cooling component structure of a montmorillonite powder modified polymer elastomer waterproof membrane preparation device.

[0040] Figure 4 This is a schematic diagram of the adjustment component structure of a montmorillonite powder modified polymer elastomer waterproof membrane preparation device;

[0041] Figure 5 This is a schematic diagram of the liquid cooling state in a device for preparing montmorillonite powder modified polymer elastomer waterproof membrane.

[0042] Figure 6 This is a schematic diagram of the gas cooling state of a montmorillonite powder modified polymer elastomer waterproof membrane preparation device.

[0043] In the diagram: 1. Support frame; 2. Conveyor motor; 3. Conveyor cylinder; 4. Feed port; 5. Cooling assembly; 6. Fixing plate; 7. Column; 8. Pelletizing motor; 9. Adjusting assembly; 51. Inner disc; 52. Extrusion ring; 53. Cooling ring; 54. Connecting pipe; 55. Connecting port; 56. Air outlet; 57. Rotating shaft; 58. Guide fan; 511. Liquid inlet; 512. Liquid outlet; 513. Air inlet; 514. Liquid tank; 515. Isolation plate; 91. Drive shaft; 92. Drive shaft; 93. Adjusting shaft; 94. Pelletizer; 95. Electric telescopic rod; 96. Sleeve; 97. Guide column; 98. Adjusting disc. Detailed Implementation

[0044] Reference Figures 1-6 This invention provides a technical solution: a montmorillonite powder modified polymer elastomer waterproof membrane preparation device, comprising at least a mixer, a pelletizing assembly, and a molding press. The mixer is used for blending raw materials, the pelletizing assembly is used for pelletizing the blended elastomer, and the molding press is used for molding the pelletized elastomer. The pelletizing assembly comprises:

[0045] Support 1, on which a conveyor motor 2 is fixed;

[0046] The conveying cylinder 3 is fixed to the upper end face of the bracket 1, and a spiral conveying blade is rotatably arranged inside it. The spiral conveying blade is driven by the conveying motor 2.

[0047] Feed port 4 is fixed to the upper end face of the conveying cylinder 3;

[0048] Cooling component 5 is fixed at the output end of conveying cylinder 3;

[0049] The fixing plate 6 is fixed to the side of the cooling assembly 5 away from the conveying cylinder 3 by multiple columns 7;

[0050] The pelletizing motor 8 is fixed to one side of the fixing plate 6;

[0051] Adjustment component 9 is fixed on the other side of the fixing plate 6 and close to the cooling component 5.

[0052] In this embodiment, the cooling component 5 includes:

[0053] The outer plate is fixed to the outer wall of the conveying cylinder 3;

[0054] The inner disc 51 is fixed at the output end of the conveying cylinder 3 and is coaxially arranged with the outer disc;

[0055] The extrusion rings 52 are configured in two groups and coaxially fixed inside the inner disk 51, with multiple rings arranged circumferentially in each group.

[0056] Multiple cooling rings 53 are configured and fixed inside the inner disk 51, and correspond one-to-one with the multiple extrusion rings 52;

[0057] A connecting pipe 54 is connected to a plurality of cooling rings 53 corresponding to a set of the extrusion rings 52;

[0058] A connecting port 55 is provided between two cooling rings 53 that correspond to the radial direction of the inner disk 51.

[0059] The air outlet 56 is configured as a plurality of outlets, which are circumferentially opened between the coaxially arranged extrusion ring 52 and cooling ring 53;

[0060] A rotating shaft 57 is rotatably disposed at the axial center of the inner disk 51, and a guide fan 58 is fixed thereon, the guide fan 58 being located inside the inner disk 51.

[0061] The guide fan 58 can agitate the liquid entering the inner plate 51, thereby breaking the coolant boundary layer and significantly improving the heat exchange efficiency between the coolant and the inner plate and cooling ring.

[0062] In a preferred embodiment, the outer wall of the inner disk 51 is symmetrically fixed with a liquid inlet 511 and a liquid outlet 512. The liquid inlet 511 is connected to an external coolant supply device; the liquid outlet 512 is connected to an external extraction device. The outer wall of the inner disk 51 is also fixed with an air inlet 513, which is connected to an external cooling gas supply device and a cooling ring 53. An isolation plate 515 is fixed on the side of the inner disk 51 near the conveying cylinder 3. A liquid chamber 514 is opened inside the inner disk 51, and the liquid chamber 514 is connected to the liquid inlet 511 and the liquid outlet 512.

[0063] It should be noted that before pelletizing, cooling liquid is injected into the liquid tank 514 through the liquid inlet 511 until the liquid tank 514 is full. Then, the pelletizing motor 8 is started to make the guide fan 58 rotate, and the liquid outlet 512 is opened at the same time to make the liquid rotate and agitate in the liquid tank 514 to improve the heat exchange efficiency.

[0064] Meanwhile, the cooling gas and cooling liquid are injected synchronously, and the diameter of the air inlet 513 is much larger than the diameter of the connecting port 55, and the diameter of the connecting port 55 is larger than the diameter of the air outlet 56. This ensures that the air intake can fill the space between the extrusion ring 52 and the cooling ring 53 with gas, thereby improving the cooling effect. The gas absorbs heat and cools the strip extruded from the extrusion ring 52. Then, the cooling liquid cools the gas after it has absorbed heat, preventing the gas ejected from the air outlet 56 from being too hot and causing softening of the outer wall of the strip when it is ejected.

[0065] In a preferred embodiment, the air outlet 56 is arranged at an angle, and its axial extension line intersects the axis of the extrusion ring 52. The diameter of the air outlet 56 located below the extrusion ring 52 is larger than that of the air outlet 56 located above the extrusion ring 52.

[0066] It is important to note that the cooling gas ejected through the inclined air outlet 56, especially with a lower diameter larger than the upper diameter, forms an upward airflow that acts on the freshly extruded strip. This effectively counteracts the strip's own weight, preventing excessive sagging and deformation, and guiding the strip to maintain a relatively straight line. This creates favorable conditions for subsequent precise pelletizing. Furthermore, at the moment the pelletizer 94 cuts the strip, the continuous airflow quickly blows the cut particles away from the cutting area, preventing them from sticking together or adhering to the blade. This ensures that the particles fall independently and smoothly. The cold airflow directly washes over the surface of the strip and the pelletizer, providing additional surface cooling, accelerating the solidification of the strip's skin, and simultaneously carrying away the heat generated by the high-speed cutting friction of the pelletizer 94, preventing the blade from overheating and causing the material to melt and stick to the blade.

[0067] In a preferred embodiment, one end of the rotating shaft 57 extends out of the inner disk 51 and is fixed with a plurality of limiting strips.

[0068] In a preferred embodiment, the adjustment component 9 includes:

[0069] The drive shaft 91 is fixed on the output shaft of the pelletizing motor 8;

[0070] The drive shaft 92 is fixed at one end of the transmission shaft 91 away from the pelletizing motor 8, and a plurality of limiting strips are fixed on its outer wall.

[0071] The adjusting shaft 93 is slidably disposed on the drive shaft 92 and the rotating shaft 57, and is restricted from rotating relative to the drive shaft 92 and the rotating shaft 57 by the limiting strip one and the limiting strip two;

[0072] Multiple pelletizing blades 94 are configured and circumferentially fixed to the outer wall of the adjusting shaft 93;

[0073] At least two electric telescopic rods 95 are symmetrically fixed on the fixed plate 6, and an adjustment disc 98 is fixed at their output end. The adjustment disc 98 is rotatably and non-slidingly disposed on the outer wall of the adjustment shaft 93.

[0074] Sleeves 96, at least two, are symmetrically fixed to the fixing plate 6;

[0075] The guide post 97 is slidably disposed inside the sleeve 96, and one end is fixedly connected to the adjusting plate 98.

[0076] In other words, the adjusting plate 98 can block the cut particles, thereby preventing the airflow from blowing the particles towards the pelletizing motor 8 and causing damage. The electric telescopic rod 62 drives the adjusting shaft 6 to move axially, adjusting the distance between the pelletizing knife 94 and the discharge port of the extrusion ring 52, so as to achieve precise and flexible control of the pelletizing length and adapt to different formulas and product requirements.

[0077] In a preferred embodiment, the pelletizing motor 8 rotates counterclockwise, and the blade direction of the pelletizing blade 94 is the same as the rotation direction of the pelletizing motor 8.

[0078] The counterclockwise rotation of the pelletizing motor 8 enables the guide fan 58 to rotate the liquid from the inlet 511 to the outlet 512 from bottom to top, thus agitating the liquid under gravity and giving it an initial velocity. This reduces the agitation force required by the guide fan 58 and reduces the load on the pelletizing motor 8.

[0079] A montmorillonite powder modified polymer elastomer waterproof membrane is prepared using the montmorillonite powder modified polymer elastomer waterproof membrane preparation apparatus according to any one of claims 1-7.

[0080] The preparation of waterproof membrane includes the following steps:

[0081] S1: Sample preparation: Weigh 5-20 parts of polybutene, 15-23 parts of high-density polyethylene, 5-20 parts of polypropylene, 25-45 parts of polyolefin elastomer, and 2-5 parts of thermoplastic polyolefin elastomer and mix thoroughly; then weigh 6-15 parts of sodium montmorillonite powder, 3-5 parts of talc powder, 2-5 parts of silica, and 1-5 parts of talc powder; finally weigh the additives (including 3-5 parts of high-purity natural fiber, 1-2 parts of titanium dioxide, 1-2 parts of antioxidant, 1-2 parts of ultraviolet absorber, 10-20 parts of softener, and 2-5 parts of silane coupling agent) and mix thoroughly. Place the weighed inorganic fillers, polymers, and additives in a forced-air drying oven and dry at 50°C for 8 hours to remove excess moisture.

[0082] S2: Blending Processing: Set the internal mixer speed to 60 r / min, the temperature of Zone 1 to 170-185 ℃, the temperature of Zone 2 to 165-180 ℃, and the temperature of Zone 3 to 165-180 ℃. First, add the uniformly mixed polymer material to the internal mixer. After the material temperature reaches the stable temperature of the cavity, start the rotor to melt and mix the polymer. After 3-5 min, add a portion of the softener to the internal mixer cavity and mix for 3-5 min. Then add montmorillonite powder and mix for 6-10 min. After mixing evenly, add another portion of the softener and mix for 2-4 min. Then add the additives and mix for 3-6 min. Finally, take the uniformly mixed melt mixture out of the internal mixer cavity and put it into the pelletizing assembly to cut it into fine particles.

[0083] S3: Roll material sample preparation: The sheet material is prepared by molding using a flat vulcanizing apparatus. The upper section temperature control plate of the hot pressing zone is set to 170-180℃, and the lower section temperature control plate of the hot pressing zone is set to 170-180℃. First, a 0.6-1.5 mm thick hollow stainless steel rectangular mold is placed in the hot pressing zone for preheating. After the mold temperature reaches the set temperature, the fine-particle polymer blend is evenly spread in the hollow rectangular mold and placed in the molding plate. The sample plate and the molding plate are placed together in the hot pressing chamber for preheating for 5-10 minutes. Then, the sample plate is hot-pressed at 5-10 MPa for 5-15 minutes. Subsequently, the sample plate and the molding plate are placed together in the cold pressing chamber and cold-pressed at the same pressure for 5-20 minutes. The sample is then removed from the rectangular mold.

[0084] The above description is merely 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 device for preparing montmorillonite powder modified polymer elastomer waterproof membrane, comprising at least a mixer, a pelletizing assembly, and a molding press, wherein the mixer is used for blending raw materials, the pelletizing assembly is used for pelletizing the blended elastomer, and the molding press is used for molding the pelletized elastomer into shape, characterized in that, The pelletizing assembly includes: A support frame (1) is fixed with a conveyor motor (2); The conveying cylinder (3) is fixed on the upper end face of the bracket (1), and a spiral conveying blade is rotatably arranged inside it. The spiral conveying blade is driven by the conveying motor (2). The feeding port (4) is fixed on the upper end face of the conveying cylinder (3); Cooling component (5) is fixed at the output end of conveying cylinder (3); The fixing plate (6) is fixed to the side of the cooling assembly (5) away from the conveying cylinder (3) by multiple columns (7); The pelletizing motor (8) is fixed to one side of the fixed plate (6); Adjustment component (9) is fixed on the other side of the fixed plate (6) and close to the cooling component (5).

2. The apparatus for preparing montmorillonite powder modified polymer elastomer waterproof membrane according to claim 1, characterized in that, The cooling assembly (5) includes: The outer plate is fixed to the outer wall of the conveying cylinder (3); The inner disc (51) is fixed at the output end of the conveying cylinder (3) and is coaxially arranged with the outer disc; The extrusion rings (52) are configured in two groups and coaxially fixed inside the inner disk (51), with multiple rings arranged circumferentially in each group; The cooling rings (53) are configured in multiple ways, fixed inside the inner disk (51), and correspond one-to-one with the multiple extrusion rings (52); A connecting pipe (54) is connected to a plurality of cooling rings (53) corresponding to a set of the extrusion rings (52); A connecting port (55) is provided between the two cooling rings (53) that are located in the radial direction of the inner disk (51); The air outlet (56) is configured as a plurality of circumferentially opened between the coaxially arranged extrusion ring (52) and cooling ring (53); A rotating shaft (57) is rotatably disposed at the axial center of the inner disk (51), and a guide fan (58) is fixed thereon, the guide fan (58) being located inside the inner disk (51).

3. The apparatus for preparing montmorillonite powder modified polymer elastomer waterproof membrane according to claim 2, characterized in that, The outer wall of the inner disk (51) is symmetrically fixed with a liquid inlet (511) and a liquid outlet (512). The liquid inlet (511) is connected to an external coolant supply device. The liquid outlet (512) is connected to an external extraction device. The outer wall of the inner disk (51) is also fixed with an air inlet (513). The air inlet (513) is connected to an external cooling gas supply device. The air inlet (513) is connected to a cooling ring (53). An isolation plate (515) is fixed on the side of the inner disk (51) near the conveying cylinder (3). A liquid chamber (514) is opened inside the inner disk (51). The liquid chamber (514) is connected to the liquid inlet (511) and the liquid outlet (512).

4. The apparatus for preparing montmorillonite powder modified polymer elastomer waterproof membrane according to claim 2, characterized in that, The air outlet (56) is arranged at an angle, and its axial extension line intersects the axis of the extrusion ring (52). The diameter of the air outlet (56) located below the extrusion ring (52) is larger than that of the air outlet (56) located above the extrusion ring (52).

5. The apparatus for preparing montmorillonite powder modified polymer elastomer waterproof membrane according to claim 2, characterized in that, One end of the rotating shaft (57) extends out of the inner disk (51) and is fixed with a plurality of limiting strips.

6. The apparatus for preparing montmorillonite powder modified polymer elastomer waterproof membrane according to claim 5, characterized in that, The adjustment component (9) includes: The drive shaft (91) is fixed on the output shaft of the pelletizing motor (8); The drive shaft (92) is fixed at one end of the transmission shaft (91) away from the pelletizing motor (8), and a plurality of limiting strips are fixed on its outer wall; The adjusting shaft (93) is slidably disposed on the drive shaft (92) and the rotating shaft (57), and is restricted from rotating relative to the drive shaft (92) and the rotating shaft (57) by the limiting strip one and the limiting strip two; Multiple pelletizing blades (94) are configured and circumferentially fixed to the outer wall of the adjusting shaft (93); At least two electric telescopic rods (95) are symmetrically fixed on the fixed plate (6), and an adjustment disc (98) is fixed at their output end. The adjustment disc (98) is rotatably and non-slidingly disposed on the outer wall of the adjustment shaft (93). At least two sleeves (96) are symmetrically fixed to the fixing plate (6); The guide post (97) is slidably disposed inside the sleeve (96), and one end is fixedly connected to the adjusting plate (98).

7. The apparatus for preparing montmorillonite powder modified polymer elastomer waterproof membrane according to claim 6, characterized in that, The pelletizing motor (8) rotates counterclockwise, and the blade direction of the pelletizing knife (94) is the same as the rotation direction of the pelletizing motor (8).

8. A montmorillonite powder modified polymer elastomer waterproof membrane, characterized in that, The waterproof membrane is prepared using the apparatus for preparing montmorillonite powder modified polymer elastomer as described in any one of claims 1-7.

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