Dielectric strength of γ-radiation cross-linked, high vinyl-content polyethylene
Artikel i vetenskaplig tidskrift, 2015

We explore γ-radiation cross-linking of high vinyl-content low-density polyethylene (LDPE) and its potential use as a high-voltage insulation material. Of the three investigated resins containing 1, 0.5 and 0.17 vinyl groups per 1000 carbons, respectively, only the highest vinyl-content material featured a sufficiently high gel content of more than 70% and hot-set elongation below 175%, when cross-linked with a γ-radiation dose of at least 68 kGy. Differential scanning calorimetry (DSC) and small-angle X-ray scattering (SAXS) reveal that neither the crystallinity nor the lamellar thickness of the highest vinyl-content LDPE are negatively affected by γ-radiation cross-linking. As a result, we find that the dielectric strength, as characterized by electrical tree initiation experiments, can be maintained upon γ-radiation cross-linking.

Hot set

Gamma-radiation cross-linking

Electrical treeing

Polyethylene

Vinyl

Dielectric strength

Författare

Mattias Andersson

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Markus Jarvid

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Anette Johansson

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Stanislaw Gubanski

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Mark Foreman

Chalmers, Kemi och kemiteknik, Energi och material

Christian Müller

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Mats Andersson

Chalmers, Kemi och kemiteknik, Tillämpad kemi

European Polymer Journal

0014-3057 (ISSN)

Vol. 64 101-107

Ämneskategorier

Polymerkemi

Styrkeområden

Energi

Materialvetenskap

DOI

10.1016/j.eurpolymj.2014.11.042

Mer information

Senast uppdaterat

2018-01-30