Anti-static MPP power cable tube and preparation method thereof

Abstract

The invention discloses an anti-static MPP power cable tube and a preparation method thereof. The polypropylene which has the characteristics of high crystallinity, high modulus, low-temperature brittleness, good processability and the like is adopted, ultra-high molecular weight polyethylene is good in wear resistance and is a poor electrical conductor, and block co-polypropylene is used as a compatibilizer to combine polypropylene and ultra-high molecular weight polyethylene, so that the insulativity and the heat resistance of the cable tube can be effectively improved; the heat-resistant insulating master batch has excellent lower insulativity and wear resistance, is less affected by temperature and good in heat resistance, effectively prolongs the service life of the cable tube, further improves the heat resistance of the cable tube by the flame retardant, effectively improves tight combination of the raw materials by the aid of a coupling agent, improves dispersity, compatibility and processability of the raw materials, and the prepared cable tube has better insulativity, heat resistance and wear resistance.

Description

technical field [0001] The invention relates to the technical field of pipe material preparation, in particular to an antistatic MPP power cable pipe and a preparation method thereof. Background technique [0002] MPP pipe, also known as MPP power cable protection pipe, is divided into excavation type and non-excavation type. MPP non-excavation pipe is also called MPP jacking pipe or drag pipe. MPP pipe uses modified polypropylene as the main raw material and has high temperature resistance. , With the characteristics of external pressure resistance, it is suitable for medium and low voltage transmission line cables and pipes below 10KV. [0003] When the existing MPP cable protection pipes are used, most of the cable protection pipes are buried underground. After the cable catches fire, it is inconvenient to put out the fire. Therefore, there is a certain demand for the heat resistance and flame resistance of the pipe. To prevent the accumulation of a large amount of stati...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an antistatic MPP power cable tube and its preparation method, which solve the following technical problems: (1) Polypropylene has high crystallinity, high modulus, low temperature brittleness, good processing and other characteristics, ultra-high molecular weight polypropylene Ethylene has good wear resistance and is a poor conductor of electricity. Block copolymerized polypropylene is used as a compatibilizer to combine polypropylene and ultra-high molecular weight polyethylene, which can effectively improve the insulation and heat resistance of cable tubes. Heat-resistant insulating masterbatch It has excellent insulation and wear resistance, is less affected by temperature, and has good heat resistance, which effectively improves the service life of the cable tube. The flame retardant further improves the heat resistance of the cable tube and the coupling agent. The setting can effectively improve the close combination of various raw materials, improve the dispersion, compatibility and processing performance of raw materials, so that the prepared cable tube has better insulation, heat resistance and wear resistance; (2) through the sleeve An adjustment component is set on the barrel, so that the brush can be adjusted in distance according to the size of the cable tube. The brush surface on the brush fits the cable tube to make it easier to remove the dirt and adsorbed debris on the surface of the cable tube. The driven gear is set on the top, so that the sleeve and the brush in the sleeve can rotate, further improving the efficiency of dirt and debris removal. The setting of the lifting mechanism can adjust the height of the sleeve so that the cable tube can easily pass through the sleeve Inside the cylinder; the transmission mechanism and the moving mechanism are set so that the second clamping block on the transmission seat clamps the cable tube and drives the cable tube to move through the moving screw. When the transmission seat reaches the end of the travel of the moving mechanism, the transmission cylinder is released. The transmission seat moves in the opposite direction, and then clamps the cable tube and drives the cable tube to move continuously. Through this setting, the cable tube can be continuously moved to the other end, which improves the work efficiency; the set spraying mechanism and the lifting cylinder make the connecting tube The upper high-pressure nozzle can be moved to the end of the cable tube, and the high-pressure nozzle sprays and cleans the inside of the cable tube to prevent the debris inside the cable tube from scratching the cable and causing abnormalities such as electric leakage

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