Alkali-resistant, acid-resistant and resistance-resistant wire and cable

Abstract

The invention discloses an alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube, which comprises an external protection tube, a middle protection tube and an internal protection tube, and is characterized in that the external protection tube is prepared by the following steps: preparing 60-70% of UHMWPE (Ultra High Molecular Weight Polyethylene); 20%-30% of a glass fiber reinforced material; 5%-10% of a compatilizer; 1%-2% of an antioxidant; 1%-2% of a lubricant; the middle-layer protective tube comprises an acid-resistant protective tube and an alkali-resistant protective tube; the acid-resistant protective tube is prepared by the following steps: preparing the following components in percentage by weight: 60-70% of polyvinylidene fluoride (PVDF); 20%-30% of high density polyethylene (HDPE); 5%-10% of carbon fibers; 1%-2% of an antioxidant; and 1%-2% of a lubricant. According to the invention, the adaptive middle-layer protection tube can be selected according to the pH value of a region, the cable can be stably used for a long time in different acid-base environments, wires and cables are effectively protected from corrosion, and the internal protection tube has strong resistance performance.

Description

Technical Field

[0001] The invention relates to the field of cable protection tubes, in particular to alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tubes. Background Art

[0002] In modern industry and infrastructure construction, the safe operation of wires and cables is of vital importance. However, in many special environments, such as chemical plants, sewage treatment plants, marine engineering and other places, wires and cables are faced with the threat of acid and alkali corrosion and external force extrusion, pulling and other resistance. Traditional wire and cable protection tubes are often difficult to meet the requirements of acid and alkali resistance and resistance at the same time, resulting in the protection tubes being easily damaged, which in turn affects the service life and safety of the wires and cables. Therefore, alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tubes are urgently needed to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide an alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: an alkali-resistant, acid-resistant and drag-resistant wire and cable protection tube, comprising an outer protection tube, a middle protection tube and an inner protection tube, wherein the preparation steps of the outer protection tube are as follows:

[0005] Ultra-high molecular weight polyethylene (UHMWPE): 60%-70%;

[0006] Glass fiber reinforced materials: 20%-30%;

[0007] Compatibilizer: 5%-10%;

[0008] Antioxidant: 1%-2%;

[0009] Lubricant: 1%-2%;

[0010] Preparation method:

[0011] Accurately weigh each raw material to ensure the accurate formula ratio, dry the UHMWPE particles to remove moisture, add UHMWPE, glass fiber reinforcement, compatibilizer, antioxidant and lubricant into a high-speed mixer and mix them thoroughly. The mixing time is about 15-20 minutes to ensure that the various ingredients are fully dispersed. Add the mixed raw materials into a dedicated extruder. This extruder usually needs to have a higher extrusion pressure and temperature control capability to adapt to the processing characteristics of UHMWPE. Adjust the extruder's temperature, screw speed, extrusion pressure and other parameters. The temperature is generally between 200℃-240℃. The screw speed is adjusted according to the size and wall thickness of the pipe. The extruded pipe is cooled and shaped through a cooling water tank. The water temperature in the cooling water tank is maintained at an appropriate temperature to ensure that the pipe cools quickly and maintains a good shape. Cut the cooled pipe according to the required length.

[0012] Preferably, the middle layer protection tube comprises an acid-resistant protection tube and an alkali-resistant protection tube, and the preparation steps of the acid-resistant protection tube are as follows:

[0013] Polyvinylidene fluoride (PVDF): 60%-70%;

[0014] High-density polyethylene (HDPE): 20%-30%;

[0015] Carbon fiber: 5%-10%;

[0016] Antioxidant: 1%-2%;

[0017] Lubricant: 1%-2%;

[0018] Preparation method:

[0019] Accurately weigh each raw material to ensure the accurate formula ratio, dry the PVDF and HDPE particles to remove moisture and prevent defects such as bubbles during processing, add PVDF, HDPE, carbon fiber, antioxidant and lubricant to the high-speed mixer, stir and mix thoroughly, the mixing time is about 10-15 minutes, so that the various raw materials are evenly dispersed, add the mixed raw materials to the plastic extruder, and the extruder melts the raw materials and extrude them into the shape of a pipe under the action of heating and screw rotation. Adjust the extruder temperature, screw speed and extrusion pressure and other parameters. The general temperature is controlled at 200℃-250℃, and the screw speed is adjusted according to the pipe size and wall thickness. The extruded pipe is cooled by a cooling water tank to make it solidify quickly and maintain a good shape. The water temperature of the cooling water tank can be controlled at 20℃-30℃, and the cooled pipe is cut according to the required length.

[0020] Preferably, the preparation steps of the alkali-resistant protective tube are as follows:

[0021] High-density polyethylene (HDPE): 70%-80%;

[0022] Polytetrafluoroethylene (PTFE): 10%-15%;

[0023] Glass fiber: 5%-10%;

[0024] Antioxidants: 1%-2%;

[0025] Lubricant: 1%-2%;

[0026] Preparation method:

[0027] Accurately weigh various raw materials according to the above formula ratio, dry the plastic particles such as HDPE and PTFE to remove moisture to prevent bubbles from being generated or reduce the material properties during processing, add the dried HDPE, PTFE, glass fiber, antioxidant and lubricant into a high-speed mixer, mix them thoroughly and evenly, the mixing time is generally 10-15 minutes, ensure that the various raw materials are fully dispersed, add the mixed raw materials into a plastic extruder, the extruder is usually composed of a feeding section, a compression section and a metering section, the raw materials are melted and extruded into a continuous pipe shape by heating and the rotation of the screw, adjust the extruder temperature, screw speed and extrusion pressure and other parameters to obtain the best molding effect, generally speaking, the temperature range of the extruder is 180℃-230℃, the screw speed is adjusted according to the diameter and wall thickness of the pipe, the extruded pipe is cooled and shaped through a cooling water tank, the water temperature in the cooling water tank is generally controlled at 20℃-30℃ to ensure that the pipe is cooled quickly and maintains a good shape, and the cooled and shaped pipe is cut according to the required length.

[0028] Preferably, the steps for preparing the internal protection tube are as follows:

[0029] PVC resin: about 80%-90%;

[0030] Stabilizer: 2%-5%;

[0031] Lubricant: 1%-3%;

[0032] Filler: appropriate amount;

[0033] Preparation method:

[0034] Accurately weigh the raw materials, dry the PVC resin, add the PVC resin, stabilizer, lubricant and filler into the high-speed mixer, mix them thoroughly, add the mixed raw materials into the extruder, and extrude them through heating and screw rotation. The extrusion temperature is generally between 160℃-200℃, and the screw speed is adjusted according to the pipe specifications. The extruded pipe is cooled by a cooling water tank to keep the inner wall smooth, and the pipe is cut to the required length and packaged.

[0035] Preferably, the inner side of the outer protective tube is evenly provided with limiting arc-shaped grooves.

[0036] Preferably, limiting arcs are evenly provided on the acid-resistant protective tube and the alkali-resistant protective tube.

[0037] Preferably, the outer side of the inner protective tube is evenly provided with limiting arc-shaped protrusions.

[0038] Preferably, the outer side of the limiting arc is slidably connected to the limiting arc groove, and the inner side of the limiting arc is slidably connected to the outer side of the limiting arc protrusion.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The present invention can select an appropriate middle-layer protective tube according to the pH value of the region, and can be used stably for a long time in different acid and alkaline environments to effectively protect wires and cables from corrosion. The internal protective tube helps to improve the fluidity during the processing process by adding lubricants, making the inner wall of the pipe smoother and having strong resistance performance. The glass fiber in the external protective tube can significantly enhance the strength and rigidity of the pipe, and can withstand various external forces to ensure the safety of the wires and cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the main three-dimensional structure of the present invention;

[0042] Figure 2 It is a schematic diagram of the main body split structure in the present invention;

[0043] Figure 3 This is a schematic diagram of the structure of the acid-resistant protective tube in the present invention;

[0044] Figure 4 It is a schematic diagram of the structure of the alkali-resistant protective tube in the present invention.

[0045] In the figure: 1-external protection tube, 2-middle protection tube, 21-acid-resistant protection tube, 22-alkali-resistant protection tube, 3-inner protection tube, 4-limiting arc groove, 5-limiting arc, 6-limiting arc protrusion. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1-Figure 4The present invention provides an embodiment: an alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube, comprising an outer protection tube 1, a middle protection tube 2 and an inner protection tube 3. The preparation steps of the outer protection tube 1 are as follows:

[0048] Ultra-high molecular weight polyethylene (UHMWPE): 60%-70%. UHMWPE has extremely high strength and wear resistance, and can provide the main high-strength performance for the pipeline;

[0049] Glass fiber reinforcement: 20%-30%, glass fiber can significantly enhance the strength and rigidity of the pipe;

[0050] Compatibilizer: 5%-10%, to ensure good bonding between UHMWPE and glass fiber;

[0051] Antioxidant: 1%-2%, to prevent plastic from oxidative aging during processing and use;

[0052] Lubricant: 1%-2%, to improve fluidity during processing;

[0053] Preparation method:

[0054] Accurately weigh each raw material to ensure the accurate formula ratio, dry the UHMWPE particles to remove moisture, add UHMWPE, glass fiber reinforcement, compatibilizer, antioxidant and lubricant into a high-speed mixer and mix them thoroughly. The mixing time is about 15-20 minutes to ensure that the various ingredients are fully dispersed. Add the mixed raw materials into a dedicated extruder. This extruder usually needs to have a higher extrusion pressure and temperature control capability to adapt to the processing characteristics of UHMWPE. Adjust the extruder's temperature, screw speed, extrusion pressure and other parameters. The temperature is generally between 200℃-240℃. The screw speed is adjusted according to the size and wall thickness of the pipe. The extruded pipe is cooled and shaped through a cooling water tank. The water temperature in the cooling water tank is maintained at an appropriate temperature to ensure that the pipe cools quickly and maintains a good shape. Cut the cooled pipe according to the required length.

[0055] The middle layer protection tube 2 includes an acid-resistant protection tube 21 and an alkali-resistant protection tube 22. The preparation steps of the acid-resistant protection tube 21 are as follows:

[0056] Polyvinylidene fluoride (PVDF): 60%-70%. PVDF has excellent chemical corrosion resistance, especially strong tolerance to acid, and can provide the main acid resistance and structural strength for the pipeline;

[0057] High-density polyethylene (HDPE): 20%-30%, HDPE can increase the toughness and processing performance of the pipe;

[0058] Carbon fiber: 5%-10%, carbon fiber can enhance the strength and rigidity of the pipeline, and also help improve corrosion resistance;

[0059] Antioxidant: 1%-2%, to prevent plastic from oxidative aging during processing and use;

[0060] Lubricant: 1%-2%, improves fluidity during processing and reduces friction;

[0061] Preparation method:

[0062] Accurately weigh each raw material to ensure the accurate formula ratio, dry the PVDF and HDPE particles to remove moisture and prevent defects such as bubbles during processing, add PVDF, HDPE, carbon fiber, antioxidant and lubricant to the high-speed mixer, stir and mix thoroughly, the mixing time is about 10-15 minutes, so that the various raw materials are evenly dispersed, add the mixed raw materials to the plastic extruder, and the extruder melts the raw materials and extrude them into the shape of a pipe under the action of heating and screw rotation. Adjust the extruder temperature, screw speed and extrusion pressure and other parameters. The general temperature is controlled at 200℃-250℃, and the screw speed is adjusted according to the pipe size and wall thickness. The extruded pipe is cooled by a cooling water tank to make it solidify quickly and maintain a good shape. The water temperature of the cooling water tank can be controlled at 20℃-30℃, and the cooled pipe is cut according to the required length.

[0063] The steps for preparing the alkali-resistant protective tube 22 are as follows:

[0064] High-density polyethylene (HDPE): 70%-80%. HDPE has good corrosion resistance, strength and toughness, and can provide the main structural support for the pipeline;

[0065] Polytetrafluoroethylene (PTFE): 10%-15%. PTFE is well-known for its excellent corrosion resistance, especially its resistance to alkali, which can greatly improve the alkali resistance of the pipeline;

[0066] Glass fiber: 5%-10%, glass fiber can enhance the strength and rigidity of the pipe, and also help improve its corrosion resistance;

[0067] Antioxidant: 1%-2%, to prevent oxidative degradation of plastics during processing and use;

[0068] Lubricant: 1%-2%, helps to reduce friction during processing and improve material fluidity; Production method:

[0069] Accurately weigh various raw materials according to the above formula ratio, dry the plastic particles such as HDPE and PTFE to remove moisture to prevent bubbles from being generated or reduce the material properties during processing, add the dried HDPE, PTFE, glass fiber, antioxidant and lubricant into a high-speed mixer, mix them thoroughly and evenly, the mixing time is generally 10-15 minutes, ensure that the various raw materials are fully dispersed, add the mixed raw materials into a plastic extruder, the extruder is usually composed of a feeding section, a compression section and a metering section, the raw materials are melted and extruded into a continuous pipe shape by heating and the rotation of the screw, adjust the extruder temperature, screw speed and extrusion pressure and other parameters to obtain the best molding effect, generally speaking, the temperature range of the extruder is 180℃-230℃, the screw speed is adjusted according to the diameter and wall thickness of the pipe, the extruded pipe is cooled and shaped through a cooling water tank, the water temperature in the cooling water tank is generally controlled at 20℃-30℃ to ensure that the pipe is cooled quickly and maintains a good shape, and the cooled and shaped pipe is cut according to the required length.

[0070] The steps for preparing the internal protection tube 3 are as follows:

[0071] PVC resin: about 80%-90%, PVC resin is the main component and determines the basic performance of the pipe;

[0072] Stabilizer: 2%-5%, to prevent PVC from decomposing during processing and use;

[0073] Lubricant: 1%-3%, helps to improve fluidity during processing and make the inner wall of the pipe smoother;

[0074] Filler: Appropriate amount can reduce costs and have little effect on the smoothness of the inner wall;

[0075] Preparation method:

[0076] Accurately weigh the raw materials, dry the PVC resin, add the PVC resin, stabilizer, lubricant and filler into the high-speed mixer, mix them thoroughly, add the mixed raw materials into the extruder, and extrude them through heating and screw rotation. The extrusion temperature is generally between 160℃-200℃, and the screw speed is adjusted according to the pipe specifications. The extruded pipe is cooled by a cooling water tank to keep the inner wall smooth, and the pipe is cut to the required length and packaged.

[0077] The inner side of the outer protective tube 1 is evenly provided with a limiting arc groove 4, the acid-resistant protective tube 21 and the alkali-resistant protective tube 22 are evenly provided with a limiting arc 5, the outer side of the inner protective tube 3 is evenly provided with a limiting arc protrusion 6, the outer side of the limiting arc 5 is slidably connected to the limiting arc groove 4, and the inner side of the limiting arc 5 is slidably connected to the outer side of the limiting arc protrusion 6. The outer protective tube 1, the middle protective tube 2 and the inner protective tube 3 can be matched and connected through the limiting arc groove 4, the limiting arc 5 and the limiting arc protrusion 6 to avoid friction damage caused by rotation between each other.

[0078] Working principle: During use, first select the acid-resistant protective tube 21 or the alkali-resistant protective tube 22 according to the pH value of the required wiring area, then insert the middle protective tube 2 into the outside of the internal protective tube 3, and insert the external protective tube 1 into the outside of the middle protective tube 2, and the inner side of the limiting arc 5 is inserted into the outer side of the limiting arc protrusion 6, and the inner side of the limiting arc groove 4 is inserted into the outer side of the limiting arc 5, and then the assembled external protective tube 1 is laid on the line, and then the external protective tube 1 is hot-welded and connected by a hot welding machine, and after connection, the cable is inserted into the interior of the internal protective tube 3.

[0079] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that numerous changes, modifications, substitutions and alterations may be made to the embodiments without departing from the spirit and scope of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube, comprising an outer protection tube (1), a middle protection tube (2) and an inner protection tube (3), characterized in that: The steps for preparing the outer protective tube (1) are as follows: Ultra-high molecular weight polyethylene (UHMWPE): 60%-70%; glass fiber reinforcement: 20%-30%; compatibilizer: 5%-10%; antioxidant: 1%-2%; Lubricant: 1%-2%; Preparation method: Accurately weigh each raw material to ensure the accurate formula ratio, dry the UHMWPE particles to remove moisture, add UHMWPE, glass fiber reinforcement, compatibilizer, antioxidant and lubricant into a high-speed mixer and mix them thoroughly. The mixing time is about 15-20 minutes to ensure that the various ingredients are fully dispersed. Add the mixed raw materials into a dedicated extruder. This extruder usually needs to have a higher extrusion pressure and temperature control capability to adapt to the processing characteristics of UHMWPE. Adjust the extruder's temperature, screw speed, extrusion pressure and other parameters. The temperature is generally between 200℃-240℃. The screw speed is adjusted according to the size and wall thickness of the pipe. The extruded pipe is cooled and shaped through a cooling water tank. The water temperature in the cooling water tank is maintained at an appropriate temperature to ensure that the pipe cools quickly and maintains a good shape. Cut the cooled pipe according to the required length.

2. The alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube according to claim 1 is characterized by: The middle layer protection tube (2) comprises an acid-resistant protection tube (21) and an alkali-resistant protection tube (22). The preparation steps of the acid-resistant protection tube (21) are as follows: Polyvinylidene fluoride (PVDF): 60%-70%; High-density polyethylene (HDPE): 20%-30%; Carbon fiber: 5%-10%; Antioxidant: 1%-2%; Lubricant: 1%-2%; Preparation method: Accurately weigh each raw material to ensure the accurate formula ratio, dry the PVDF and HDPE particles to remove moisture and prevent defects such as bubbles during processing, add PVDF, HDPE, carbon fiber, antioxidant and lubricant to the high-speed mixer, stir and mix thoroughly, the mixing time is about 10-15 minutes, so that the various raw materials are evenly dispersed, add the mixed raw materials to the plastic extruder, and the extruder melts the raw materials and extrude them into the shape of a pipe under the action of heating and screw rotation. Adjust the extruder temperature, screw speed and extrusion pressure and other parameters. The general temperature is controlled at 200℃-250℃, and the screw speed is adjusted according to the pipe size and wall thickness. The extruded pipe is cooled by a cooling water tank to make it solidify quickly and maintain a good shape. The water temperature of the cooling water tank can be controlled at 20℃-30℃, and the cooled pipe is cut according to the required length.

3. The alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube according to claim 2 is characterized by: The preparation steps of the alkali-resistant protective tube (22) are as follows: High-density polyethylene (HDPE): 70%-80%; polytetrafluoroethylene (PTFE): 10%-15%; glass fiber: 5%-10%; Antioxidants: 1%-2%; Lubricant: 1%-2%; Preparation method: Accurately weigh various raw materials according to the above formula ratio, dry the plastic particles such as HDPE and PTFE to remove moisture to prevent bubbles from being generated or reduce the material properties during processing, add the dried HDPE, PTFE, glass fiber, antioxidant and lubricant into a high-speed mixer, mix them thoroughly and evenly, the mixing time is generally 10-15 minutes, ensure that the various raw materials are fully dispersed, add the mixed raw materials into a plastic extruder, the extruder is usually composed of a feeding section, a compression section and a metering section, the raw materials are melted and extruded into a continuous pipe shape by heating and the rotation of the screw, adjust the extruder temperature, screw speed and extrusion pressure and other parameters to obtain the best molding effect, generally speaking, the temperature range of the extruder is 180℃-230℃, the screw speed is adjusted according to the diameter and wall thickness of the pipe, the extruded pipe is cooled and shaped through a cooling water tank, the water temperature in the cooling water tank is generally controlled at 20℃-30℃ to ensure that the pipe is cooled quickly and maintains a good shape, and the cooled and shaped pipe is cut according to the required length.

4. The alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube according to claim 1 is characterized in that: The steps for preparing the inner protection tube (3) are as follows: PVC resin: about 80%-90%; stabilizer: 2%-5%; Lubricant: 1%-3%; Filler: appropriate amount; Preparation method: Accurately weigh the raw materials, dry the PVC resin, add the PVC resin, stabilizer, lubricant and filler into the high-speed mixer, mix them thoroughly, add the mixed raw materials into the extruder, and extrude them through heating and screw rotation. The extrusion temperature is generally between 160℃-200℃, and the screw speed is adjusted according to the pipe specifications. The extruded pipe is cooled by a cooling water tank to keep the inner wall smooth, and the pipe is cut to the required length and packaged.

5. The alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube according to claim 1 is characterized in that: The inner side of the external protection tube (1) is evenly provided with limiting arc-shaped grooves (4).

6. The alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube according to claim 2 is characterized by: Limiting arcs (5) are evenly arranged on the acid-resistant protection tube (21) and the alkali-resistant protection tube (22).

7. The alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube according to claim 4 is characterized by: The outer side of the internal protection tube (3) is evenly provided with limiting arc-shaped protrusions (6).

8. The alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube according to claim 5, 6 or 7, characterized in that: The outer side of the limiting arc (5) is slidably connected to the limiting arc-shaped groove (4), and the inner side of the limiting arc (5) is slidably connected to the outer side of the limiting arc-shaped protrusion (6).

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