High-modulus impact-resistant HDPE double-wall corrugated pipe and preparation method thereof

Abstract

The invention discloses a high-modulus impact-resistant HDPE double-wall corrugated pipe and a preparation method thereof. The high-modulus impact-resistant HDPE double-wall corrugated pipe comprisesthe following raw materials: high-density polyethylene, high-modulus PP, HDPE stiffening master batch, HDPE toughening master batch, polyester modified acrylic resin, siloxane modified acrylic resin,modified color master batch, nano calcium carbonate, modified talcum powder, glass fiber, a titanate coupling agent, an antibacterial agent, a plasticizer and an antioxidant. High-density polyethyleneand high-modulus PP are used as matrixes, HDPE stiffening master batch and HDPE toughening master batch are added to serve as preparation base materials of the high-modulus impact-resistant HDPE double-wall corrugated pipe, the HDPE stiffening master batch and the HDPE toughening master batch serve as rigid particles, the high-density polyethylene is modified through modified talcum powder, strong chemical bonds are formed, in combination with the layered structure characteristics of the talcum powder, the impact strength of the high-density polyethylene matrix is increased while the rigidityis increased, and the effects of increasing the rigidity and maintaining the toughness are achieved.

Description

technical field [0001] The invention belongs to the technical field of bellows, in particular to a high-modulus impact-resistant HDPE double-wall bellows and a preparation method thereof. Background technique [0002] With the sustained and stable high-speed growth of my country's national economy, it provides a good macro environment and broad space for urban infrastructure construction. With my country's increasing emphasis on environmental protection, governments at all levels from the central government to local governments have issued a series of policies and regulations on water conservation, pollution control and environmental protection. Water supply, water saving, drainage and sewage treatment will become the focus of urban municipal construction in the future, which provides market development space for the promotion and application of large-diameter plastic pipes. Because structural wall pipes can save raw materials and reduce costs, structural wall pipes have be...

AI Technical Summary

Problems solved by technology

The U-PVC double-wall corrugated pipes used in drainage and sewage pipes in my country have the advantages of good rigidity and low price; however, they also have the disadvantage of poor low-temperature impact performance, and are very easy to be damaged especially during construction in northern winter

The HDPE double-wall corrugated pipe has obvious advantages in low temperature toughness, but due to the characteristics of PE material, its rigidity is worse than that of cement pipe, and the ring stiffness and creep resistance of the pipe are worse than that of PVC corrugated pipe. During long-term use, it is easy to Deformation by gravity affects the service life of the product, and in the molding process of the existing HDPE double-wall corrugated pipe, the air gap that may exist between the extruded sheets reduces the processing of the high-modulus impact-resistant HDPE double-wall corrugated pipe quality

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