Highly insulating thermoplastic blends comprising a styrenic copolymer for direct‐current power cable insulation

作     者：Yingwei Ouyang Amir Masoud Pourrahimi IdaÖstergren Marcus Mellqvist JakobÅnevall Azadeh Soroudi Anja Lund Xiangdong Xu Thomas Gkourmpis Per‐Ola Hagstrand Christian Müller Yingwei Ouyang;Amir Masoud Pourrahimi;Ida ?stergren;Marcus Mellqvist;Jakob ?nevall;Azadeh Soroudi;Anja Lund;Xiangdong Xu;Thomas Gkourmpis;Per-Ola Hagstrand;Christian Müller

作者机构：Department of Chemistry and Chemical EngineeringChalmers University of TechnologyGöteborgSweden Department of Electrical EngineeringChalmers University of TechnologyGöteborgSweden Innovation&TechnologyBorealis ABStenungsundSweden 

出 版 物：《High Voltage》 (高电压（英文）)

年 卷 期：2022年第7卷第2期

页      面：251-259页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：Stiftelsen för Strategisk Forskning, SSF, (FFL15‐0147) Borealis, Borealis AG 

主　　题：property. blends copolymer 

摘      要：The impact of the composition of blends comprising low‐density polyethylene(LDPE),isotactic polypropylene(PP)and a styrenic copolymer additive on the thermomechanical properties as well as the direct‐current(DC)electrical and thermal conductivity is *** presence of 5 weight percent(wt%)of the styrenic copolymer strongly reduces the amount of PP that is needed to enhance the storage modulus above the melting temperature of LDPE from 40 to 24 wt%.At the same time,the copolymer improves the consistency of the thermomechanical properties of the resulting ternary *** both the DC electrical and thermal conductivity strongly decrease with PP content,the addition of the styrenic copolymer appears to have little influence on either ***,PP in combination with small amounts of a styrenic copolymer not only allows to reinforce LDPE at elevated temperatures but also functions as an electrical conductivity‐reducing additive,which makes such thermoplastic ternary formulations possible candidates for the insulation of high‐voltage power cables.