Influence of thermomechanical relaxations on the impact strength of polyethylene

E. Harkin-Jones, S. Ryan, R. J. Crawford

Research output: Contribution to journalConference articlepeer-review


The influence of thermomechanical relaxations on the impact behaviour of rotationally moulded polyethylene is presented in this paper. Four grades of polyethylene: two linear low density and two medium density, are considered. Impact tests carried out over a temperature range -50 °C to +30 °C indicate a maximum value of impact strength at -10 °C for three of the materials tested, and at -30 °C for the fourth material. Dynamic mechanical thermal analysis of each material shows a slight increase in viscous modulus at a temperature corresponding to that at which maximum impact strength occurs.

Original languageEnglish
Pages (from-to)1552-1555
Number of pages4
JournalJournal of Engineering and Applied Science
Publication statusPublished (in print/issue) - 1 Dec 1996
EventProceedings of the 1996 54th Annual Technical Conference. Part 2 (of 3) - Indianapolis, IN, USA
Duration: 5 May 199610 May 1996


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