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

查看全文 作　　者：Yingwei [1]Ouyang;Amir Masoud [1]Pourrahimi;[1]IdaÖstergren;Marcus [1]Mellqvist;[1]JakobÅnevall;Azadeh [1]Soroudi;Anja [1]Lund;Xiangdong [2]Xu;Thomas [3]Gkourmpis;Per‐Ola [3]Hagstrand;Christian [1]Müller

机构地区：[1]Department of Chemistry and Chemical Engineering,Chalmers University of Technology,Göteborg,Sweden;[2]Department of Electrical Engineering,Chalmers University of Technology,Göteborg,Sweden;[3]Innovation&Technology,Borealis AB,Stenungsund,Sweden

出　　处：《High Voltage》索引2022年第7卷第2期,共9页

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 investigated.The 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 blends.While 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 property.Evidently,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. 关键词：property. BLENDS COPOLYMER

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

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