A kind of inner wall wear-resistant double-wall corrugated pipe and its preparation method

Abstract

The invention discloses a double-wall corrugated pipe with a wear-resistant inner wall and a preparation method thereof. The double-wall corrugated pipe comprises a pipe inner wall base and a polyethylene corrugated pipe layer, the pipe inner wall base comprises, by weight, 50 to 80 parts of PE, 50 to 80 parts of POE, 10 to 50 parts of UHMWPE, 1 to 10 parts of silane, 0.1 to 0.5 parts of an initiator, 0.1 to 0.5 parts of an amine catalyst, 10 to 50 parts of a filler and 2 to 10 parts of a lubricant. After mortar swinging friction on the inner wall of the pipe 100000 times, the double-wall corrugated pipe with a wear-resistant inner wall has a wear rate reduced to 2% or less from 5% and improves wear resistance by 1 time or more. The double-wall corrugated pipe has physical and mechanical properties satisfying the national standard requirements, improves inner wall wear resistance, effectively prolongs a pipe service life and can be widely used in a sewage pipe network, drainage in residential quarters, rain and sewage diversion, industrial park wastewater discharge and drainage of large facilities.

Description

Technical field The invention belongs to the technical field of pipe preparation, and specifically relates to a double-walled corrugated pipe with wear-resistant inner wall widely used in the fields of drainage, sewage pipe network construction and the like, and a preparation method thereof. Background technique With the acceleration of my country’s urbanization, the construction scale of underground pipe network systems is expanding. Double-wall corrugated pipes are used in drainage and sewage pipe network engineering by virtue of their obvious advantages such as corrosion resistance, light weight, convenient installation, and low comprehensive project cost. China has developed rapidly. However, in practical applications, various kinds of sediments are often present in the fluid conveyed by the pipeline, which produces varying degrees of impact and cutting on the inner wall, which easily causes the pipe wall to wear. The inner wall of the double-wall corrugated pipe is general...

AI Technical Summary

Problems solved by technology

Although UHMWPE has excellent wear resistance, its molecular weight is generally more than 1 million, and its fluidity is extremely poor. It cannot be processed by extrusion processing, and it is difficult to form a double-wall fusion with the outer wall polyethylene or other materials.

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