Novel MPP power cable sheath pipe

Abstract

The invention discloses a novel MPP power cable sheath pipe, which consists of the following raw materials by weight: 8-12 parts of polypropylene, 3-7 parts of polyethylene, 15-25 parts of active calcium carbonate, 1-10 parts of glass fiber, 0-1 part of a coupling agent, 0.1-0.5 part of an antioxidant, and 0.3-1 part of a lubricant. The MPP power cable sheath pipe provided by the invention has strong chemical stability and corrosion resistance, good mechanical properties, and high compressive strength, and can play a very good protective role to the cable. Pipe connection can adopt a variety of ways so as to maximumly facilitate on-site construction, and the cable threading protection sheath pipe has excellent comprehensive performance, and can reach good protection and anti-ageing effect on cable. The MPP power cable sheath pipe has anti-deformation strength increased by 30%, welding joint tensile strength increased by 70%, and a non-excavation drag corner up to 60%.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a novel MPP power cable sheathing tube. Background technique [0002] At present, the cable casing for engineering is made of polyvinyl chloride resin as the main material, heavy calcium carbonate as the filler, and chlorinated polyethylene, paraffin and other small materials, and has certain corrosion resistance, high temperature resistance, flame retardancy, Insulation, wear resistance, light weight, no pollution and other characteristics. However, its shortcomings are poor compressive strength, which is still far behind the requirements of construction and application, and its flame retardant performance is not ideal; in addition, its Vicat softening temperature hovers around 90°C, and the friction coefficient of inner and outer pipe walls is large, which increases the construction efficiency. Difficulty of use. [0003] MPP power cable sheath tubes are divided into exc...

AI Technical Summary

Problems solved by technology

However, its shortcomings are poor compressive strength, which is still far behind the construction application requirements, and its flame retardant performance is not ideal; in addition, its Vicat softening temperature hovers around 90°C, and the friction coefficient of inner and outer pipe walls is large, which increases the construction efficiency. Difficulty of use

[0004] Glass fiber is an inorganic non-metallic material with excellent performance. There are many types. Its advantages are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, but its disadvantages are brittleness and poor wear resistance.