Plastic wall pipe and manufacturing method thereof

Abstract

The invention relates to the technical field of drainage pipelines, and discloses a plastic wall pipe and a manufacturing method thereof. The manufacturing method comprises the steps: taking high-density polyethylene, metallocene polyethylene and first modified nano calcium carbonate as raw materials to prepare a straight pipe; preparing a small-caliber hollow pipe outer layer from an ethylene-octylene block copolymer, ethylene-methyl acrylate, second modified nano calcium carbonate and polypropylene, preparing a small-caliber hollow pipe inner layer from polycaprolactone grafted polypropylene, spirally winding the small-caliber hollow pipe on the outer side surface of a straight pipe, then preparing a filler, taking tetracyclic triterpenoid dammarane saponin as a raw material, adding NaOCl for oxygenolysis and reduced pressure distillation to obtain a distillate, stirring and mixing the distillate and particle-grade calcium carbonate, and adding polycaprolactone to obtain the filler; finally, filling a small-caliber hollow tube with the filler, and after solidification, obtaining the plastic wall tube. The plastic wall pipe prepared through the method is high in ring stiffness, the filler can be recycled by being heated to a certain temperature, cost is saved, and the plastic wall pipe is more environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of drainage pipes, in particular to a plastic wall pipe and a manufacturing method thereof. Background technique [0002] At present, buried plastic drainage pipes are usually wall pipes of various structures, such as double-wall corrugated pipes, carat pipes, etc. As one of the key properties of the structural wall pipe, the ring stiffness directly affects the use effect of the structural wall pipe. If the ring stiffness is too small, the pipe’s bearing capacity will be poor, and it is prone to excessive deformation or buckling instability, which will cause the pipe to be damaged, especially During its long-distance transportation, its splicing interface is particularly easy to deform, which increases the difficulty of construction when splicing structural wall pipes. At present, in order to ensure that the splicing joint is not deformed during long-distance transportation, domestic enterprises usually use...

AI Technical Summary

Problems solved by technology

But this processing method has two defects: first, the round iron bracket is heavy, resulting in high fuel consumption during transportation; second, and the biggest problem, during the recycling process of the round iron bracket, the round iron bracket is not easy to fold, Occupies a large amount of transportation space, resulting in increased transportation costs

[0006] 1. Due to the poor flexibility and low temperature brittleness of the PP material of the winding pipe, especially in the process of use under cold environmental conditions, the PP material single-wall corrugated pipe is prone to brittle cracking due to external force extrusion, which leads to the plastic wall pipe produced Reduced ring stiffness

[0007] 2. If the concrete filler is used to fill the plastic structure wall pipe, the combination of the concrete and the inner wall surface of the plastic structure wall pipe is not good and the brittleness is relatively large, so that after filling with concrete, its impact on the plastic structure wall pipe The enhancement of ring stiffness is difficult to achieve the expected effect

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