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Silver nanosheet-coated copper nanowire/epoxy resin nanocomposites with enhanced electrical conductivity and wear resistance

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Abstract

Silver (Ag) nanosheet-coated Cu nanowires (denoted as Cu@AgNWs) were prepared with a facile transmetalation reaction method. The effect of reaction conditions on the morphology and microstructure of the as-prepared Cu@AgNWs was investigated, and the thermal stability of Cu@AgNWs was evaluated by thermogravimetric analysis. In the meantime, the as-prepared Cu@AgNWs were used as the nanofillers of epoxy resin (EP), and their effect on the electrical conductivity and wear resistance of the EP-matrix composites was examined. Results indicate that the as-prepared Cu@AgNWs consist of CuNW core and Ag nanosheet shell. The Ag nanosheet shell can well inhibit the oxidation of the CuNW core, thereby providing the as-prepared Cu@AgNWs with good thermal stability even at an elevated temperature of 230 °C. The reaction temperature, Cu/Ag molar ratio, Cu dispersion concentration, and the dropping speed of silver ammonia reagent are suggested to be 40 °C, 5:1, 1% (mass fraction), and poured directly, respectively. Resultant Cu@AgNWs exhibit desired morphology and performance and can effectively increase the electrical conductivity and wear resistance of EP. This could make it feasible for the Cu@AgNW-EP composite to be applied as an electrostatic conductive material.

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Acknowledgements

We acknowledge the financial support provided by National Natural Science Foundation of China (Grant No. 21671053), the Plan for Young Scientific Innovation Talent of Henan Province (Grant No. 154100510018), and Natural Science Foundation of Henan Province (14A150006).

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Authors and Affiliations

  1. Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, China

    Ningning Zeng, Jingyi Ma, Yujuan Zhang, Guangbin Yang, Shengmao Zhang & Pingyu Zhang

  2. Collaborative Innovation Center of Nano Functional Materials and Applications of Henan Province, Henan University, Kaifeng, 475004, China

    Shengmao Zhang

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  1. Ningning Zeng
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  2. Jingyi Ma
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  3. Yujuan Zhang
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  4. Guangbin Yang
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Correspondence to Shengmao Zhang.

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We declared that we do not have any commercial or associative interest that represents a conflict of interest in connection with the work submitted.

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Zeng, N., Ma, J., Zhang, Y. et al. Silver nanosheet-coated copper nanowire/epoxy resin nanocomposites with enhanced electrical conductivity and wear resistance. J Nanopart Res 19, 91 (2017). https://doi.org/10.1007/s11051-017-3784-z

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