Polyethylene Based Ionomers as High Voltage Insulation Materials
Artikel i vetenskaplig tidskrift, 2023
Polyethylene based ionomers are demonstrated to feature a thermo-mechanical and dielectric property portfolio that is comparable to cross-linked polyethylene (XLPE), which may enable the design of more sustainable high voltage direct-current (HVDC) power cables, a crucial component of future electricity grids that seamlessly integrate renewable sources of energy. A new type of ionomer is obtained via high-pressure/high-temperature free radical copolymerization of ethylene in the presence of small amounts of ion-pair comonomers comprising amine terminated methacrylates and methacrylic acid. The synthesized ionomers feature a crystallinity, melting temperature, rubber plateau modulus and thermal conductivity like XLPE but remain melt-processable. Moreover, the preparation of the ionomers is free of byproducts, which readily yields a highly insulating material with a low dielectric loss tangent and a low direct-current (DC) electrical conductivity of 1 to 6·10−14 S m−1 at 70 °C and an electric field of 30 kV mm−1. Evidently, the investigated ionomers represent a promising alternative to XLPE-based high voltage insulation, which may permit to ease the production as well as end-of-use recycling of HVDC power cables by combining the advantages of thermoset and thermoplastic materials while avoiding the formation of byproducts.
ionomers
thermal conductivity
cross-linked polyethylene
HVDC power cables
electrical insulators
Författare
Silvia D'Auria
Universita degli Studi di Parma
SABIC Technology Center (STC)
Amir Masoud Pourrahimi
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Alessia Favero
Universita degli Studi di Parma
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Peter Neuteboom
SABIC Technology Center (STC)
Xiangdong Xu
Chalmers, Elektroteknik, Elkraftteknik
Shuichi Haraguchi
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Marko Bek
Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial
Roland Kádár
Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial
Enrico Dalcanale
Universita degli Studi di Parma
Roberta Pinalli
Universita degli Studi di Parma
Christian Müller
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Jérôme Vachon
SABIC Technology Center (STC)
Advanced Functional Materials
1616-301X (ISSN) 16163028 (eISSN)
Vol. 33 36 2301878Polymer engineering via molecular design: embedding electrical and optical properties into VITrimers (VIT)
Europeiska kommissionen (EU) (EC/H2020/101008237), 2021-06-01 -- 2025-05-31.
Ämneskategorier
Polymerkemi
Polymerteknologi
Annan materialteknik
Annan elektroteknik och elektronik
DOI
10.1002/adfm.202301878