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Enhanced thermal conductivity of epoxy composites filled with tetrapod-shaped ZnO

机译：增强了填充带有四藏形ZnO的环氧复合材料的导热系数

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摘要

Epoxy composites with ZnO powders characterized by different structures as inclusion are prepared and their thermal properties are studied. The experimental results demonstrate that the epoxy resins filled by tetrapod-shaped ZnO (T-ZnO) whiskers have the superior thermal transport property in comparison to ZnO micron particles (ZnO MPs). The thermal conductivity of ZnO/epoxy and T-ZnO/epoxy composites in different mass fraction (10, 20, 30, 40, 50 wt%) are respectively investigated and the suitable models are compared to explain the enhancement effect of thermal conductivity. The thermal conductivity of TZnO/epoxy composites with 50 wt% filler reaches 4.38 W m(-1) K-1, approximately 1816% enhancement as compared to neat epoxy. In contrast, the same mass fraction of ZnO MPs are incorporated into epoxy matrix showed less improvement on thermal conduction properties. This is because T-ZnO whiskers act as a thermal conductance bridge in the epoxy matrix. In addition, the other thermal properties of T-ZnO/epoxy composites are also improved. Furthermore, the T-ZnO/epoxy composite also presents a much reduced coefficient of thermal expansion (similar to 28.1 ppm K-1) and increased glass transition temperature (215.7 degrees C). This strategy meets the requirement for the rapid development of advanced electronic packaging.
机译：用ZnO粉体，其特征在于不同的结构为包含环氧复合材料准备和它们的热性能进行了研究。实验结果表明，通过四角锥体形状的ZnO（T-ZnO）的晶须填充在环氧树脂具有优异的热传输性能相比的ZnO微米粒子（氧化锌，MPS）。的ZnO /环氧树脂和热导率T-的ZnO /环氧复合材料在不同的质量分数（10，20，30，40，50％（重量））分别调查和合适的模型进行比较，以解释的热导率的提高的效果。 TZnO /环氧复合材料与50重量％的填料的热导率达到4.38脉冲W M（-1）K-1，约1816％的增强相比，整齐环氧树脂作为。与此相反，氧化锌的MPs相同的质量分数掺入环氧基体中显示出对热传导性更低的改善。这是因为T-晶须作为在环氧树脂基体中的热传导桥。此外，T-ZnO的其他热性质/环氧复合材料也得到了改善。此外，T-的ZnO /环氧树脂复合材料也呈现的热膨胀（类似于28.1 ppm的K-1）和提高的玻璃化转变温度（215.7℃）的显着降低的系数。这一战略符合先进电子封装的快速发展的要求。

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  • 来源
    《RSC Advances》 |2018年第22期|共7页
  • 作者

    Guo Liangchao; Zhang Zhenyu; Kang Ruiyang; Chen Yapeng; Hou Xiao; Wu Yuming; Wang Mengjie; Wang Bo; Cui Junfeng; Jiang Nan; Lin Cheng-Te; Yu Jinhong;

  • 作者单位

    Dalian Univ Technol Minist Educ Key Lab Precis &

    Nontradit Machining Technol Dalian 116024 Peoples R China;

    Dalian Univ Technol Minist Educ Key Lab Precis &

    Nontradit Machining Technol Dalian 116024 Peoples R China;

    Dalian Univ Technol Minist Educ Key Lab Precis &

    Nontradit Machining Technol Dalian 116024 Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol &

    Engn Zhejiang Key Lab Marine Mat &

    Protect Technol Key Lab Marine Mat &

    Related Technol Ningbo 315201 Zhejiang Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol &

    Engn Zhejiang Key Lab Marine Mat &

    Protect Technol Key Lab Marine Mat &

    Related Technol Ningbo 315201 Zhejiang Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol &

    Engn Zhejiang Key Lab Marine Mat &

    Protect Technol Key Lab Marine Mat &

    Related Technol Ningbo 315201 Zhejiang Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol &

    Engn Zhejiang Key Lab Marine Mat &

    Protect Technol Key Lab Marine Mat &

    Related Technol Ningbo 315201 Zhejiang Peoples R China;

    Dalian Univ Technol Minist Educ Key Lab Precis &

    Nontradit Machining Technol Dalian 116024 Peoples R China;

    Dalian Univ Technol Minist Educ Key Lab Precis &

    Nontradit Machining Technol Dalian 116024 Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol &

    Engn Zhejiang Key Lab Marine Mat &

    Protect Technol Key Lab Marine Mat &

    Related Technol Ningbo 315201 Zhejiang Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol &

    Engn Zhejiang Key Lab Marine Mat &

    Protect Technol Key Lab Marine Mat &

    Related Technol Ningbo 315201 Zhejiang Peoples R China;

    Chinese Acad Sci Ningbo Inst Mat Technol &

    Engn Zhejiang Key Lab Marine Mat &

    Protect Technol Key Lab Marine Mat &

    Related Technol Ningbo 315201 Zhejiang Peoples R China;

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