PMID- 35632895 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220530 IS - 2161-1653 (Electronic) IS - 2161-1653 (Linking) VI - 6 IP - 2 DP - 2017 Feb 21 TI - Highly Insulating Polyethylene Blends for High-Voltage Direct-Current Power Cables. PG - 78-82 LID - 10.1021/acsmacrolett.6b00941 [doi] AB - The insulation of state-of-the-art extruded high-voltage direct-current (HVDC) power cables is composed of cross-linked low-density polyethylene. Driven by the search for sustainable energy solutions, concepts that improve the ability to withstand high electrical fields and, ultimately, the power transmission efficiency are in high demand. The performance of a HVDC insulation material is limited by its residual electrical conductivity. Here, we demonstrate that the addition of small amounts of high-density polyethylene (HDPE) to a low-density polyethylene (LDPE) resin results in a drastic reduction in DC conductivity. An HDPE content as low as 1 wt % is found to introduce a small population of thicker crystalline lamellae, which are finely distributed throughout the material. The change in nanostructure correlates with a decrease in DC conductivity by approximately 1 order of magnitude to about 10(-15) S m(-1) at high electric fields of 30 and 40 kV mm(-1) and elevated temperature of 70 degrees C. This work opens up an alternative design concept for the insulation of HVDC power cables. FAU - Andersson, Mattias G AU - Andersson MG AD - Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296, Goteborg, Sweden. FAU - Hynynen, Jonna AU - Hynynen J AD - Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296, Goteborg, Sweden. FAU - Andersson, Mats R AU - Andersson MR AD - Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia. FAU - Englund, Villgot AU - Englund V AD - Innovation and Technology, Borealis AB, 44486 Stenungsund, Sweden. FAU - Hagstrand, Per-Ola AU - Hagstrand PO AD - Innovation and Technology, Borealis AB, 44486 Stenungsund, Sweden. FAU - Gkourmpis, Thomas AU - Gkourmpis T AD - Innovation and Technology, Borealis AB, 44486 Stenungsund, Sweden. FAU - Muller, Christian AU - Muller C AUID- ORCID: 0000-0001-7859-7909 AD - Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296, Goteborg, Sweden. LA - eng PT - Journal Article DEP - 20170111 PL - United States TA - ACS Macro Lett JT - ACS macro letters JID - 101574672 SB - IM EDAT- 2017/02/21 00:00 MHDA- 2017/02/21 00:01 CRDT- 2022/05/28 01:46 PHST- 2022/05/28 01:46 [entrez] PHST- 2017/02/21 00:00 [pubmed] PHST- 2017/02/21 00:01 [medline] AID - 10.1021/acsmacrolett.6b00941 [doi] PST - ppublish SO - ACS Macro Lett. 2017 Feb 21;6(2):78-82. doi: 10.1021/acsmacrolett.6b00941. Epub 2017 Jan 11.