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Keywords

Longitudinal shrinkage, HDPE pipes, Heat treatment, Mechanical properties

Document Type

Article

Abstract

This research aims to investigate the effect of heat treatment on the physico-mechanical properties of HDPE pipes for drinking water. Pipe samples of varying thicknesses were subjected to heat treatment at temperatures of 60, 80, and 100°C for 2, 6, 24, and 48 hours. Experiments showed that regardless of the treatment temperature or time, some effect, however slight, will occur on the structure at the level of the amorphous transition regions. The longitudinal shrinkage values are clearly related to the heat treatment temperature. Treatments at 80°C showed an increase in some mechanical properties such as yield stress, necking stress, and fracture stress with the increasing of heat treatment time. In contrast, the heat treatment at 100°C for 6 hours stabilized this properties. Treatments at 80 and 60°C yielded similar values for longitudinal shrinkage, approximately 0.35%, whereas the 100°C treatment resulted about 1%.

DOI

10.65645/3105-9104.1030

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