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Ning Jia,Bin Yang,Xiaohong Wang,Shishuang Cui,Peng Chen,Ru Xia,Zhengzhi Zheng,Jiasheng Qian,Yuchao Ke,Yang Pan 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.125 No.-
In this study, graphene nanoplatelets (GNP) and nickel–cobalt (NiCo) alloy were adopted as reinforcingmaterials to prepare epoxy (EP) resin-based composites. NiCo particles were able to achieve uniformanchoring on GNPs’ surface under the electrostatic force due to the successful introduction of oxygendefects on GNPs. With the synergistic effect of adhesive PVDF and salt particles, the system with threedimensionally(3D) interconnected network was successfully constructed. Benefit from the formation ofmechanically stable and efficient heat conduction paths, the thermal conductivity (TC) of the EP/PVDF/NiCo@GNP composite reached 1.077 Wm1K1 at a filler volume fraction of 6.82 vol%, while the counterpart’sstoragemodulus (E’) was up to 3.22 GPa. In addition, a scaling formula was quantitatively proposed tocorrelate TC with E’, and the perfect agreement between the theoretical prediction and experimental dataclarified the underlying mechanism of the relationship between phonons transport and stress transferwithin a systemwith 3D ordered structures. The establishment of relationship between AHR (average heatingrate) and TC made it possible to further predict TC of composites based upon the infrared thermal imaging(ITI) data. The as-prepared GNP composites show good application prospects as thermal managementmaterials which need to experience thermally mechanical deformation.
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