High-density polyethylene double-wall corrugated pipe

Abstract

The present invention relates to the field of engineering plastic processing manufacturing, and discloses a high-density polyethylene double-wall corrugated pipe, which comprises an outer pipe and an inner pipe, wherein the materials of the outer pipe comprise 50-80 parts of high-density polyethylene, 30-50 parts of a polypropylene resin, 25-50 parts of a solid filling material, 3-5 parts of metallocene polyethylene, 3-5 parts of a compatibilizing agent, and 2-5 parts of a drying agent, and the materials of the inner pipe comprise 50-80 parts of high-density polyethylene, 30-50 parts of a solid filling material, and 2-5 parts of a drying agent. According to the modified high-density polyethylene double-wall corrugated pipe of the present invention, the inner pipe and the outer pipe have characteristics of high melt strength, high rigidity and good impact resistance, such that the double-wall corrugated pipe has characteristics of high ring rigidity, good compression resistance, and light pipe weight; the metallocene polyethylene is added to the materials of the outer pipe, such that the ring flexibility of the outer pipe is increased, and the toughness is good; and the high-density polyethylene double-wall corrugated pipe can be widely used in non-pressure plastic underground drainage and sewage drain pipelines, and has good application prospects and market competitiveness in the fields of plastic pipelines.

Description

【Technical field】 [0001] The invention relates to the field of engineering plastics processing and manufacturing, in particular to a high-density polyethylene double-wall corrugated pipe. 【Background technique】 [0002] At present, HDPE double-wall corrugated pipes are mainly used in drainage and sewage, and their applications in the market are becoming more and more extensive. Due to the increase of enterprises producing plastic pipes, the market competition is becoming more and more fierce. Many manufacturers ignore the quality of products in order to compete in the market and reduce product prices. The ring stiffness of the product does not meet the standard requirements, resulting in accidents such as project rework and delays in the construction period, and a serious waste of social resources. Therefore, it has become a necessary trend to find out a double-wall corrugated pipe formula with low production cost and good quality. 【Content of invention】 [0003] The pur...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a high-density polyethylene double-wall corrugated pipe, which aims to solve the problems of low rigidity, poor pressure bearing performance and long service life of the double-wall corrugated pipe in the prior art. short technical question

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