Composite pipeline

Abstract

The invention relates to a composite pipeline, and belongs to the technical field of high polymer materials. The composite pipeline comprises an inner layer pipe, a middle layer pipe and an outer layer pipe in sequence from inside to outside; the middle layer pipe is prepared from, by weight, 80-120 parts of high density polyethylene, 3-5 parts of polyimide, 5-15 parts of fillers, 10-20 parts of color masterbatch and 0-0.1 part of azodicarbonamide, the outer layer pipe and the inner layer pipe are prepared from the same high polymer material, and the high polymer material is prepared from, byweight, 80-120 parts of ultrahigh molecular weight polyethylene, 8-15 parts of polyimide, 15-30 parts of high density polyethylene and 12-18 parts of color masterbatch. A method of conducting co-extrusion on the composite pipeline through two machines is adopted, the multi-layer multifunctional composite pipeline can be obtained only through one production process, multiple composite production processes are avoided, and the production consumption can be lowered.

Description

technical field [0001] The invention relates to a composite pipeline and belongs to the technical field of polymer materials. Background technique [0002] With the rapid development of the application field of plastic piping systems at home and abroad, due to poor construction conditions or irregular construction in traditional construction, scratches to PE pipes are inevitable during the construction process, and scratches caused by scratches may cause stress on PE pipes. Concentration and crack expansion, if there are hard objects such as stones, it will also cause serious point load damage to the PE pipe, which greatly affects the service life of the PE pipe. [0003] Therefore, the life of the pipeline is greatly affected by the external environment. In addition to reducing scratches during pipeline laying, more attention should be paid to the material of the pipeline. Considering the weak performance of conventional PE pipes, ultra-high molecular weight polyethylene E...

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of traditional pipes such as low strength and weak tensile strength, the patent publication No. 105111558A discloses a PE pipe, which improves product strength and toughness by adding black masterbatch, defoaming agent, large PE particles, and PE high-pressure material.

However, the patented pipe still cannot get rid of the defect that it is easy to be scratched, which leads to the rupture of the pipe

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