Thioxanthone Derivatives as Stabilizers Against Electrical Breakdown in Cross-Linked Polyethylene for High Voltage Cable Applications
Journal article, 2015

In the search of voltage stabilizers for high voltage underground cables the chemical synthesis and electrical tree inhibiting effect of a series of thioxanthone derivatives in cross-linked low-density polyethylene (XLPE) is reported. The strongest increase in electrical tree initiation field under high-voltage alternating current (HVAC) conditions was 55% compared to reference XLPE after the addition of 0.3 wt% 9-oxo-9H-thioxanthen-2-yl methacrylate. Thermal analysis, small angle X-ray scattering and gel content measurements showed that the addition of the stabilizers did not significantly influence the microstructure and gel fraction of XLPE. A comparison between the stabilizing effects of the thioxanthone derivatives and previously reported photophysical properties revealed that a short lifetime of the triplet excited state can be related to a good voltage-stabilizing effect.

thioxanthones

polymer degradation

electrical treeing

high voltage insulation

polyethylene

Author

Harald Wutzel

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

Markus Jarvid

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

Jonas Mattiasson Bjuggren

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

Anette Johansson

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Villgot Englund

Innovation and Technology

Stanislaw Gubanski

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Mats Andersson

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

Polymer Degradation and Stability

0141-3910 (ISSN)

Vol. 112 63-69

Areas of Advance

Energy

Materials Science

Subject Categories

Chemical Engineering

DOI

10.1016/j.polymdegradstab.2014.12.002

More information

Latest update

9/6/2018 2