Alternative Concepts for Extruded Power Cable Insulation: from Thermosets to Thermoplastics.

Autor: Pourrahimi AM; Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, 41296, Sweden., Mauri M; Department of Materials Engineering, Nexans Norway AS, Knivsøveien 70, Berg i Østfold, 1788, Norway., D'Auria S; Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, 43124, Italy., Pinalli R; Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, 43124, Italy., Müller C; Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, 41296, Sweden.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 Apr 12, pp. e2313508. Date of Electronic Publication: 2024 Apr 12.
DOI: 10.1002/adma.202313508
Abstrakt: The most common type of insulation of extruded high-voltage power cables is composed of low-density polyethylene (LDPE), which must be crosslinked to adjust its thermomechanical properties. A major drawback is the need for hazardous curing agents and the release of harmful curing byproducts during cable production, while the thermoset nature complicates reprocessing of the insulation material. This perspective explores recent progress in the development of alternative concepts that allow to avoid byproducts through either click chemistry type curing of polyethylene-based copolymers or the use of polyolefin blends or copolymers, which entirely removes the need for crosslinking. Moreover, polypropylene-based thermoplastic formulations enable the design of insulation materials that can withstand higher cable operating temperatures and facilitate reprocessing by remelting once the cable reaches the end of its lifetime. Finally, polyethylene-based covalent and non-covalent adaptable networks are explored, which may allow to combine the advantages of thermoset and thermoplastic insulation materials in terms of thermomechanical properties and reprocessability.
(© 2024 The Authors. Advanced Materials published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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