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Influence of morphology effects on electrical properties in XLPE
Author(s) -
Nilsson S.,
Hjertberg T.,
Smedberg A.,
Sonerud B.
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34006
Subject(s) - low density polyethylene , materials science , morphology (biology) , composite material , electrical breakdown , polymer chemistry , polyethylene , genetics , optoelectronics , dielectric , biology
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. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011