Investigation of the processing characteristics and mechanical properties of metallocene-catalysed polyethylene foams for rotational moulding

The object of this work is to investigate the foaming characteristics of three grades of metallocene-catalysed linear low-density polyethylenes for rotational moulding using both an exothermic and endothermic chemical blowing agent. This paper reports on the results of ongoing experimental investiga...

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Bibliographic Details
Published in:Journal of cellular plastics 2003-11, Vol.39 (6), p.487-497
Main Authors: ARCHER, E, HARKIN-JONES, E, KEARNS, M. P, FATNES, A. M
Format: Article
Language:English
Subjects:
Applied sciences
Cellular
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Technology of polymers
Online Access:Get full text
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Summary:The object of this work is to investigate the foaming characteristics of three grades of metallocene-catalysed linear low-density polyethylenes for rotational moulding using both an exothermic and endothermic chemical blowing agent. This paper reports on the results of ongoing experimental investigations in which rheological and thermal parameters are related to the polymer structure and mechanical properties. Through adjustments to moulding conditions, the significant processing and physical material parameters, which optimise metallocene-catalysed linear low-density polyethylene foam structure, have been identified. The results obtained from equivalent conventional grades of Ziegler-Natta-catalysed linear low-density polyethylene are used as a basis for comparison.
ISSN:0021-955X
1530-7999
DOI:10.1177/0021955X03039213