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<p>Enhancing the comprehensive performance of polypropylene (PP) is essential for expanding its use in advanced applications. In this study, the (MgCoNiCuZn)O high-entropy oxide ceramic (HEO) was synthesized via solid-state reaction as a novel multifunctional filler. Subsequently PP/HEO composites containing 0–12 phr KH570-modified HEO were fabricated via melt-blending to systematically assess the multifunctional filler influence. The addition of HEO significantly improved melt flow characteristics and mere 1 phr HEO nearly doubled the melt flow index. Differential scanning calorimetry analysis confirmed that HEO Functioned as an effective nucleating agent. The crystallization temperature increased from 108 .45&#xa0;°C for pure PP to a peak value of 118.65&#xa0;°C for the composite with 4 phr HEO when cooled at 10&#xa0;°C/min, and non-isothermal crystallization kinetics were accelerated. Furthermore, within an appropriate range of HEO content, the strength and toughness of the PP/HEO composites have been enhanced. Notably, the thermal conductivity was dramatically enhanced, increasing from 0.28&#xa0;W/(m·K) for pure PP to 2.39&#xa0;W/(m·K) for the composite containing 12 phr HEO. Simultaneously, both volume and surface resistivity exhibited substantial increases compared to the unfilled polymer. This work represents the first systematic study of PP/HEO composites, demonstrating the unique ability of this HEO to concurrently improve both thermal conductivity and electrical insulation properties, offering a new route towards multifunctional PP materials.</p>

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Study of mechanical, thermal, and electrical performance of polypropylene/high entropy ceramic composites

  • 期刊论文

  • 发表日期：

    2025年10月15日

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  • Xiaohui Wang,
  • Yuexu Wei,
  • Junzhuang Li,
  • Wenfeng Li,
  • Weiqiang Song,
  • Li Ye,
  • Zhenyu Guo,
  • Luoru Zuo,
  • Wenxi Cheng,
  • Wei Miao

摘要

Enhancing the comprehensive performance of polypropylene (PP) is essential for expanding its use in advanced applications. In this study, the (MgCoNiCuZn)O high-entropy oxide ceramic (HEO) was synthesized via solid-state reaction as a novel multifunctional filler. Subsequently PP/HEO composites containing 0–12 phr KH570-modified HEO were fabricated via melt-blending to systematically assess the multifunctional filler influence. The addition of HEO significantly improved melt flow characteristics and mere 1 phr HEO nearly doubled the melt flow index. Differential scanning calorimetry analysis confirmed that HEO Functioned as an effective nucleating agent. The crystallization temperature increased from 108 .45 °C for pure PP to a peak value of 118.65 °C for the composite with 4 phr HEO when cooled at 10 °C/min, and non-isothermal crystallization kinetics were accelerated. Furthermore, within an appropriate range of HEO content, the strength and toughness of the PP/HEO composites have been enhanced. Notably, the thermal conductivity was dramatically enhanced, increasing from 0.28 W/(m·K) for pure PP to 2.39 W/(m·K) for the composite containing 12 phr HEO. Simultaneously, both volume and surface resistivity exhibited substantial increases compared to the unfilled polymer. This work represents the first systematic study of PP/HEO composites, demonstrating the unique ability of this HEO to concurrently improve both thermal conductivity and electrical insulation properties, offering a new route towards multifunctional PP materials.