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首页> 外文期刊>RSC Advances >Effect of the MWCNTs selective localization on the dielectric properties for PVDF/PS/HDPE ternary blends with in situ formed core-shell structure
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Effect of the MWCNTs selective localization on the dielectric properties for PVDF/PS/HDPE ternary blends with in situ formed core-shell structure

机译：MWCNTS选择性定位对PVDF / PS / HDPE三元共混物的电介质性能的影响，以原位形成的芯壳结构

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摘要

This work demonstrated the selective localization of multiwall carbon nanotubes (MWCNTs) in (70/20/10 vol%) poly(vinylidene fluoride) (PVDF)/poly(styrene) (PS)/high-density poly(ethylene) (HDPE) ternary blends to be an effective method to reduce the dielectric loss and maintain high dielectric constant simultaneously. Here, PVDF/PS/HDPE blends displayed a core-shell structure, HDPE phase was the core and PS phase was the shell. When MWCNTs was added into PVDF/PS/HDPE blends, it stably dispersed in the PS layer. The morphology, electrical properties, and dielectric properties of (PVDF/PS/HDPE)/ MWCNTs composites were investigated. The results indicated that the conductivity as well as the dielectric permittivity value increased with the content of MWCNTs. Meanwhile, the dielectric permittivity was dependent on the electric field frequency. The dielectric constant for (PVDF/PS/HDPE)/MWCNTs composites was 400 with 1.0 vol% MWCNTs at 10(2) Hz, accompanied by a low dielectric loss of 10 which was about 400 times lower than that of PVDF/MWCNTs composites. Therefore, a low dielectric loss and high dielectric constant for (PVDF/PS/HDPE)/MWCNTs composites, which formed a core-shell structure, have been obtained through MWCNTs selectively locating in PS shell even at high contents of MWCNTs.
机译：这项工作证明了（70/20/10 Vol％）聚（偏二氟乙烯）（PVDF）/聚（苯乙烯）/高密度聚（乙烯）（HDPE）中的多壁碳纳米管（MWCNT）的选择性定位三元共混物是减少介电损耗并同时保持高介电常数的有效方法。这里，PVDF / PS / HDPE混合物显示了核心壳结构，HDPE相位是核心，PS相位是壳。当将MWCNT添加到PVDF / PS / HDPE混合物中时，它稳定地分散在PS层中。研究了（PVDF / PS / HDPE）/ MWCNTS复合材料的形态，电性能和介电性质。结果表明，电导率以及介电常数值随MWCNT的含量而增加。同时，介电介电常数取决于电场频率。 （PVDF / PS / HDPE）/ MWCNTS复合材料的介电常数为400，10（2）Hz，伴随的低介电损耗10，介电损耗为10，其比PVDF / MWCNTs复合材料低约400倍。因此，通过在MWCNT的高含量下选择性地定位在PS壳中，已经通过MWNTS在PS壳中选择了低介电损耗和（PVDF / PS / HDPE）/ MWCNTS复合材料的低介电损耗和高介电学材料。

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  • 来源
    《RSC Advances》 |2016年第63期|共8页
  • 作者

    Li Shuang-lin; Dou Rui; Shao Yan; Yin Bo; Yang Ming-bo;

  • 作者单位

    Sichuan Univ Coll Polymer Sci &

    Engn State Key Lab Polymer Mat Engn Chengdu 610064 Sichuan Peoples R China;

    Sichuan Univ Coll Polymer Sci &

    Engn State Key Lab Polymer Mat Engn Chengdu 610064 Sichuan Peoples R China;

    Sichuan Univ Coll Polymer Sci &

    Engn State Key Lab Polymer Mat Engn Chengdu 610064 Sichuan Peoples R China;

    Sichuan Univ Coll Polymer Sci &

    Engn State Key Lab Polymer Mat Engn Chengdu 610064 Sichuan Peoples R China;

    Sichuan Univ Coll Polymer Sci &

    Engn State Key Lab Polymer Mat Engn Chengdu 610064 Sichuan Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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