The charge trapping properties were studied by Thermally Stimulated Depolarization Current (TSDC) measurements. The obtained TSDC results show significant differences in charge trapping properties of PP/POE composites filled with differently modified silicas. Polar functional groups attached to the surface of the silica appear to have a strong effect on the charge trapping properties: The trap depth distribution becomes deeper and the trap density decreases to significantly lower levels.
All results show that incorporation of surface modified nanosilica into a PP/POE matrix is a promising approach to tailor its dielectric properties. Further development of these composites may lead to benefits for application in high-voltage cable and capacitor applications.
|Title of host publication||Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19|
|Publication status||Published - 8 Aug 2019|
|MoE publication type||A4 Article in a conference publication|
|Event||26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19 - Tampere, Finland|
Duration: 12 Jun 2019 → 14 Jun 2019
|Series||Proceedings of the Nordic Insulation Symposium|
|Conference||26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19|
|Period||12/06/19 → 14/06/19|
- silica surface modification
- dry silanization
- charge trapping
- high voltage cable