Formula for toughening and enhancing outer wall of high-density polyethylene (HDPE) pipe

Abstract

The invention provides a formula for toughening and enhancing the outer wall of a high-density polyethylene (HDPE) pipe. The formula consists of the following substances in part by weight: 70 to 90 parts of HDPE reclaimed materials, 5 to 20 parts of glass fibers, 5 to 15 parts of elastomer, 0.02 to 0.04 part of coupling agent, 0.2 to 0.3 part of antioxidant and 0.02 to 0.06 part of toner. According to the formula for toughening and enhancing the outer wall of the HDPE pipe, the glass fibers are added to enhance the tensile strength of the HDPE reclaimed materials, the elastomer which has high compatibility with HDPE is added to improve the breaking elongation of the HDPE reclaimed materials, and the impact strength of the machined pipe is improved, so that the mechanical property of the pipe is improved comprehensively, and particularly, the annular stiffness of the HDPE pipe is improved; and the crushing condition at a flaring is improved well, a production process is simple, the production cost is reduced, and the HDPE pipe is difficult to deform after being formed.

Description

technical field [0001] The invention relates to plastic pipe technology, in particular to a toughening and strengthening formula for the outer wall of HDPE pipe. Background technique [0002] The current HDPE pipes are basically extruded from HDPE recycled materials. Because it is a recycled material, it has been processed once or more, so after forming, some mechanical properties of the pipe are not stable enough, or cannot meet the standards. Its shortcomings are mainly manifested in two aspects: 1. The ring stiffness of the pipe cannot meet the requirements, and the ring stiffness is the most important performance index of the buried drainage pipe; 2. The flared part of the pipe is easy to break, and the whole pipe will be broken after the flared part is broken. The pipe is scrapped. If extruded raw materials are used instead, all mechanical properties can reach the standard and are relatively stable, but the cost of purchasing materials will increase significantly, and...

AI Technical Summary

Problems solved by technology

Because it is a recycled material, it has been processed once or more, so after forming, some mechanical properties of the pipe are not stable enough, or cannot meet the standard

Its shortcomings are mainly manifested in two aspects: 1. The ring stiffness of the pipe cannot meet the requirements, and the ring stiffness is the most important performance index of the buried drainage pipe; 2. The flared part of the pipe is easy to break, and the whole pipe will be broken after the flared part is broken. The pipe is scrapped

If extruded raw materials are used instead, all mechanical properties can reach the standard and are relatively stable, but the cost of purchasing materials will increase significantly, and at the same time, the recycled materials will not be fully used, resulting in a certain waste, which does not meet the economical requirements of the process. demand, making it unbearable for businesses

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