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Surface modification and thermal performance of a graphene oxide/novolac epoxy composite

机译：石墨烯氧化物/酚醛清漆环氧复合材料的表面改性和热性能

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摘要

Functionalized graphene oxide (GO) was successfully modified by grafting 1,3,5-triglycidylisocyanurate (TGIC) onto the surface of GO. The modified GO was then added to a novolac epoxy composite at various volume fractions to improve the interfacial compatibility between the filler and matrix. Samples of the modified GO/novolac epoxy composite were fabricated through the hot-pressing method. Microstructural analysis revealed that the modified GO dispersed well in the matrix and formed thermal conductive pathways across the matrix. The thermal degradation temperature of 50% weight loss of the modified GO/novolac epoxy composite was 166 degrees C higher than that of the novolac epoxy. The data for loss factor tan demonstrated that when the composite contained 36.8 wt% of modified GO, the glass transition temperature of the modified GO/novolac epoxy composite was 222 degrees C, which is 90 degrees C higher than that of the novolac epoxy. The thermal conductivity of the modified GO/novolac epoxy composite improved from 0.044 W m(-1) K-1 to 1.091 W m(-1) K-1. Results indicated that the incorporation of surface-modified GO into the novolac epoxy positively affects the thermal conductivity and various properties of the modified GO/novolac epoxy composite.
机译：通过将1,3,5-三缩水基二氰脲酸盐（Tgic）接地到Go的表面上，成功地改变了官能化的石墨烯氧化物（GO）。然后将改性的去添加到各种体积分数的酚醛清漆环氧基复合物中，以改善填料和基质之间的界面相容性。通过热压方法制造改性的GO / Novolac环氧复合材料的样品。微结构分析显示，在基质中，改性在基质中分散良好，并在基质上形成了导热途径。改性Go / Novolac环氧复合材料的50％重量损失的热降解温度高于酚醛清漆环氧树脂的166℃。损耗因子TAN的数据证明，当复合物含有36.8wt％的改进的GO时，改性的GO / NOVOLAC环氧复合材料的玻璃化转变温度为222℃，其比酚醛清漆环氧树脂高90℃。改性的GO / Novolac环氧复合材料的导热率从0.044wm（-1）k-1至1.091w m（-1）k-1改善。结果表明，表面改性的掺入酚醛清漆环氧树脂的掺入积极地影响改性的GO / Novolac环氧复合材料的导热率和各种性质。

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  • 来源
    《RSC Advances》 |2018年第37期|共12页
  • 作者

    Li Shasha; Liu Xi; Fang Changqing; Liu Nailiang; Liu Donghong;

  • 作者单位

    Xian Univ Technol Fac Printing Packaging Engn &

    Digital Media Techn Xian 710048 Shaanxi Peoples R China;

    Xian Univ Technol Fac Printing Packaging Engn &

    Digital Media Techn Xian 710048 Shaanxi Peoples R China;

    Xian Univ Technol Fac Printing Packaging Engn &

    Digital Media Techn Xian 710048 Shaanxi Peoples R China;

    Xian Univ Technol Sch Sci Xian 710048 Shaanxi Peoples R China;

    Zhejiang Univ Fuli Inst Food Sci Hangzhou 310058 Zhejiang Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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