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Influence from defects of three-dimensional graphene networks on the interface condition between the graphene basal plane and various resins

机译：三维石墨烯网络缺陷对石墨烯基平面和各种树脂之间的界面状况的影响

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摘要

Graphene assisted thermal interface materials (TIMs) attract more and more attention because of their high thermal conductivities. However, how to improve the phonon transport ability at the interface between the graphene basal plane and the matrix is still unclear. In this study, three-dimensional graphene networks (3DGNs) with varying defect densities are fabricated by adjusting the chemical vapor deposition processes, and these specimens are adopted as fillers to modify various resins with different functional groups to reveal the interface contact rule. By optimizing the defect density of the 3DGNs, a synergy between the thermal boundary resistances of the filler and matrix and the high intrinsic thermal conductivity of the filler can be achieved in the resulting TIMs, and the epoxy group from the matrix is found to be the best active group to form a close contact between the defects of the 3DGNs. After that, the thermal performance stability of the resulting TIMs under a high temperature for a long time is detected, and the influence from increased Umklapp scattering is partially offset by the weakened Kapitza scattering. Moreover, the corresponding mechanical properties have been measured to confirm the feasibility of the resulting TIMs for practical application areas.
机译：石墨烯辅助热界面材料（TIMS）由于其高导电性而越来​​越受到关注。然而，如何提高石墨烯基平面与矩阵之间接口处的声子传输能力仍不清楚。在这项研究中，三维石墨烯网络（3DGNs）具有变化的缺陷密度通过调整化学气相沉积工艺制造，并且这些样品采用如填料修改具有不同官能团的各种树脂以显示界面接触规则。通过优化3DGN的缺陷密度，在所得的时间中可以实现填料和基质的热边界电阻和填料的高固有导热率之间的协同作用，并且发现来自基质的环氧树脂是最佳活动组，在3DGNS的缺陷之间形成密切联系。之后，检测到长时间高温下产生的时间的热性能稳定性，并且增加的UMKLAPP散射的影响被弱化的Kapitza散射部分偏移。此外，已经测量了相应的机械性能以确认所产生的实际应用区域的恒定的可行性。

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  • 来源
    《RSC Advances》 |2018年第49期|共7页
  • 作者

    Tang Bo; Chen Haiqun; Sun Yunfei; Li Mingan; Wang Zhengwei; Yu Haogang; Ma Tingting; Li Sen;

  • 作者单位

    Changzhou Univ Jiangsu Key Lab Oil &

    Gas Storage &

    Transportat T Sch Petr Engn Changzhou 213016 Peoples R China;

    Changzhou Univ Jiangsu Key Lab Oil &

    Gas Storage &

    Transportat T Sch Petr Engn Changzhou 213016 Peoples R China;

    Suzhou Univ Sci &

    Technol Coll Elect &

    Informat Engn Suzhou 215009 Jiangsu Peoples R China;

    Suzhou Univ Sci &

    Technol Coll Elect &

    Informat Engn Suzhou 215009 Jiangsu Peoples R China;

    Changzhou Univ Jiangsu Key Lab Oil &

    Gas Storage &

    Transportat T Sch Petr Engn Changzhou 213016 Peoples R China;

    Changzhou Univ Jiangsu Key Lab Oil &

    Gas Storage &

    Transportat T Sch Petr Engn Changzhou 213016 Peoples R China;

    Changzhou Univ Jiangsu Key Lab Oil &

    Gas Storage &

    Transportat T Sch Petr Engn Changzhou 213016 Peoples R China;

    Changzhou Univ Jiangsu Key Lab Oil &

    Gas Storage &

    Transportat T Sch Petr Engn Changzhou 213016 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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