Influence of Morphology Effects on Electrical Properties in XLPE
Journal article, 2011

This study elucidates the influence of differences in crosslink structure and crosslink density on water tree growth, electrical tree growth, and electrical breakdown strength. One reference LDPE was compared with a LDPE containing a higher number of vinyl groups, introduced via the copolymerisation with a diene. Because of the chemical difference, the initially formed crosslink structure will be different for the materials. A range of various crosslink densities was considered for the two materials. It was found that along with a noticeable change in morphology after crosslinking, significant changes in particularly water tree growth, electrical tree growth, and electrical breakdown strength could be observed.




water trees

crosslinked polyethylene

tree initiation

polyethylene blends

electrical breakdown strength



crystalline morphology

electrical trees


Susanne Nilsson

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Thomas Hjertberg

Borealis AB

A. Smedberg

Borealis AB

Björn Sonerud

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Journal of Applied Polymer Science

0021-8995 (ISSN) 1097-4628 (eISSN)

Vol. 121 6 3483-3494

Subject Categories

Polymer Chemistry



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