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.
crystalline morphology
tree initiation
electrical trees
water trees
growth
breakdown
electrical breakdown strength
strength
crosslinked polyethylene
insulation
insulation
polyethylene blends
Author
Susanne Nilsson
Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry
Thomas Hjertberg
Borealis GmbH
A. Smedberg
Borealis GmbH
Björn Sonerud
Chalmers, Materials and Manufacturing Technology, High Voltage Engineering
Journal of Applied Polymer Science
0021-8995 (ISSN) 1097-4628 (eISSN)
Vol. 121 6 3483-3494Subject Categories
Polymer Chemistry
DOI
10.1002/app.34006