Polypropylene Copolymers and Blends for HVDC Cable Insulation: Initial Characterization and Pilot-scale Production

This paper introduces a preliminary characterization of polypropylene-based copolymers as well as a possible ternary blend as a candidate to be used for HVDC cable insulation in the framework of the European project NEWGEN (New GENeration of HVDC insulating materials, cables and systems). The effect of production process scale-up (from mini-scale to pilot-scale cast-processing) is also investigated for the promising PP ternary blend which is essentially composed of homophasic PP random copolymer (RACO), heterophasic PP copolymer (HECO), and propylene-based elastomer (PBE). The preliminary dielectric characterization introduces a promising RACO/HECO/PBE blend with a similar and comparable performance of mini-scale and up-scaled specimens. Mechanical characterization show that incorporating HECO and PBE in the ternary blend reduces the stiffness metrics of RACO towards suitable values for HVDC cable applications.

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Publication Details

Published
2024-10-06
DOI
https://doi.org/10.1109/ceidp61745.2024.10907748
Citations
2
Primary Topic
High voltage insulation and dielectric phenomena
Type
article
Field-Weighted Citation Impact
0.23

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Polypropylene Copolymers and Blends for HVDC Cable Insulation: Initial Characterization and Pilot-scale Production

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article

Polypropylene Copolymers and Blends for HVDC Cable Insulation: Initial Characterization and Pilot-scale Production

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article en
2 citations

Abstract

This paper introduces a preliminary characterization of polypropylene-based copolymers as well as a possible ternary blend as a candidate to be used for HVDC cable insulation in the framework of the European project NEWGEN (New GENeration of HVDC insulating materials, cables and systems). The effect of production process scale-up (from mini-scale to pilot-scale cast-processing) is also investigated for the promising PP ternary blend which is essentially composed of homophasic PP random copolymer (RACO), heterophasic PP copolymer (HECO), and propylene-based elastomer (PBE). The preliminary dielectric characterization introduces a promising RACO/HECO/PBE blend with a similar and comparable performance of mini-scale and up-scaled specimens. Mechanical characterization show that incorporating HECO and PBE in the ternary blend reduces the stiffness metrics of RACO towards suitable values for HVDC cable applications.

Tampere University (FI), Supergrid Institute (FR), VTT Technical Research Centre of Finland (FI), University of Bologna (IT), University of Twente (NL)
European Commission, European Climate, Infrastructure and Environment Executive Agency
Affordable and clean energy
Openalex Percentile: Top 49%
High voltage insulation and dielectric phenomena
0.23
DOIOpen Access PDFOpenAlex
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