The influence of deformation temperature under uniaxial stretching on the parameters of heat shrinkage of high density polyethylene

✍ Scribed by N.B. Valiotti; S.A. Nenakhov; G.E. Zaikov

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 295 KB
• Volume: 24
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(88)90146-2

✦ Synopsis

A~traet--The influence of deformation temperature under uniaxial stretching on the nature of shrinkage stress and the change in linear dimensions of PE oriented samples during subsequent heating has been studied. It has been shown that thermal expansion of the material takes place in the initial stages of heating under orientation above the temperature of PE melting. Subsequent increase in temperature to that of PE melting causes the development of shrinkage stress and sample shrinkage. On orientation below the melting temperature, the heat expansion can be completely balanced, whereas sample shrinkage develops in the early stages of heating; high values of shrinkage stress are observed.