Heat-resistant insulating MPP power cable tube and preparation method thereof

Abstract

The invention discloses a heat-resistant insulating MPP power cable tube and a preparation method thereof, belonging to the technical field of cable tube processing. The heat-resistant insulating MPPpower cable tube comprises an inner pipeline, wherein the outer surface of the inner pipeline is sleeved with an insulating net, the inner wall of the inner pipeline is coated with a lubricating layer, one side of the insulating net is provided with a storage groove, one end of the insulating net is fixedly connected with a wire, and the outer side of the inner pipeline and the outer side of the storage groove are sleeved with an MPP outer pipeline. The MPP outer pipeline comprises the following raw materials by weight: 60-80 parts of isotactic polypropylene resin, 5-10 parts of block copolymer polypropylene, 3-5 parts of olefin block copolymer elastomer OBC, 0.5-2 parts of heat-resisting insulating orange master batch and 10-20 parts of ultra-high-molecular-weight polyethylene resin. TheMPP outer pipeline on the outermost side of the heat-resistant insulating MPP power cable tube is higher in heat resistance and external pressure resistance, the inner pipeline on the innermost side is higher in high-temperature resistance and has good flame-proof capacity, so fire spreading can be avoided when a fire breaks out.

Description

technical field [0001] The invention relates to the technical field of cable tube processing, in particular to a heat-resistant insulating MPP power cable tube 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. , The characteristics of external pressure resistance, suitable for medium and low voltage transmission line cables below 10KV. Compared with the traditional "grooving and buried pipe method", the non-excavation power pipe project is more suitable for the current environmental protection requirements. The length of the MPP pipe Most of them are 6m-14m. [0003] A Chinese patent discloses a rose crystal nano-calcium carbonate multi-dimensional reinforced MPP cable protection tu...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned existing MPP cable protection tubes, most of them are made of single-layer material, resulting in various performances of the tubes being limited by thickness and materials. At the same time, when in use, most cable protection tubes are buried underground, which is inconvenient after the cable catches fire. Fire extinguishing, so there is a certain demand for the heat resistance and flame resistance of the pipe. At the same time, when in use, it is necessary to prevent a large amount of static electricity from accumulating inside the pipe, causing damage to the pipe or cable, or even a fire. The technical problem of the present invention The purpose is to provide a heat-resistant insulation MPP power cable tube and its preparation method

Images