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High thermal conductivity and high impact strength of epoxy nanodielectrics with functionalized halloysite nanotubes

机译：用官能化霍罗伊矿纳米管的环氧纳米电极高导热性和高冲击强度

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摘要

Epoxy nanodielectrics with high thermal conductivity and high impact strength have become the increasingly desirable material of the electronic and electric industries. In this paper, three functionalized halloysite nanotubes (HNTs) named p-HNTs (treated by KH 560), b-HNTs (in situ grafted by benzidine) and d-HNTs (in situ grafted by 4,4'-(1,1'-biphenyl-4,4'-diyidioxy)dianiline) were used to fabricate thermally conductive epoxy/HNTs nanodielectrics with a high impact strength. It was found that the surface modification of HNTs play very important roles in enhancing the mechanical, thermal and dielectric properties of epoxy nanodielectrics. The obtained epoxy/b-HNTs nanodielectrics with 60 wt% filler presented the highest thermal conductivity of 0.85 W m(-1) K-1 (about 30% higher than that of epoxy/HNTs nanodielectrics). The impact strength of epoxy/b-HNTs nanodielectrics is about 5.8 kJ m(-2), 1.5 times that of epoxy/HNTs nanodielectrics. The epoxy/b-HNTs nanodielectrics also possessed excellent thermal stability and electrical insulation properties. In summary, the epoxy/b-HNTs nanodielectrics showed the best overall performance among all epoxy thermosets/in situ grafting HNTs. The results of the SEM images showed that the improved physical properties of epoxy nanodielectrics were attributed to the increased interaction between in situ grafted HNTs and the epoxy matrix and better dispersion of the in situ grafted HNTs in the epoxy matrix. The results suggested that the obtained epoxy nanodielectrics might be promising as efficient heat-releasing materials for thermal management and next generation electronic devices.
机译：具有高导热性和高冲击强度的环氧纳米电极已成为电子和电动行业越来越可取的材料。本文中，三个官能化的霍利石纳米管（HNT）名为p-HNT（由KH 560处理的官能），B-HNT（由苯并掺入原位）和D-HNT（由4,4'（1,1）接枝（1,1） '-Biphenyl-4,4'-二氧基）Dianiline）用于制造具有高冲击强度的导热环氧/ HNT纳米电极。结果发现HNT的表面改性在增强环氧纳米电极的机械，热和介电性能方面发挥着非常重要的作用。具有60wt％填料的得到的环氧/ B-HNT纳米电导率为0.85Wm（-1）k-1的最高导热率（比环氧/ HNT纳米电极高约30％）。环氧/ B-HNT纳米电极的冲击强度约为5.8kJ m（-2），环氧/ HNT纳米电极的1.5倍。环氧/ B-HNT纳米电极也具有出色的热稳定性和电绝缘性能。总之，环氧树脂/ B-HNT纳米电极显示出所有环氧热固性胶剂/原位嫁接HNT中的最佳总体性能。 SEM图像的结果表明，环氧纳米电极的改善的物理性质归因于原位接枝HNT和环氧基质之间的增加的相互作用，并更好地分散在环氧基质中的原位接枝HNT。结果表明，所获得的环氧纳米电极可能具有用于热管理和下一代电子设备的有效释放材料。

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  • 来源
    《RSC Advances》 |2016年第73期|共11页
  • 作者

    Mo Hailin; Yang Ke; Li Shengtao; Jiang Pingkai;

  • 作者单位

    Shanghai Jiao Tong Univ Shanghai Key Lab Elect Insulat &

    Thermal Aging Dept Polymer Sci &

    Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Shanghai Key Lab Elect Insulat &

    Thermal Aging Dept Polymer Sci &

    Engn Shanghai 200240 Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Elect Insulat &

    Power Equipment Xian Peoples R China;

    Shanghai Jiao Tong Univ Shanghai Key Lab Elect Insulat &

    Thermal Aging Dept Polymer Sci &

    Engn Shanghai 200240 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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