Study of comparative characteristics of polyethylene pipe grades.

Abstract

This article discusses a new class of ethylene-α-olefin copolymers known as PERT (polyethylene with enhanced temperature stability), which exhibit improved physical and chemical properties. These properties include high thermal stability under hydrostatic and hydrodynamic loads, as well as mechanical and diffusion prop- erties. A special feature of PERT is that the required strength at high temperatures is achieved without the need for cross-linking of macromolecules, due to the unique crystalline structure of these materials. Given its versatility, polyethylene PERT is recommended for the production of pipes intended for hot water supply and heating systems.