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Preparation and Thermal Conductivity of Nanofluids Consisting of SiO2-Organic Composite Nanorods

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Abstract

SiO2-organic composite nanorods were synthesized in cetyltrimethylammonium bromide-tetraethylorthosilicate-ammonia solution-water media. The length and aspect ratio of the obtained nanorods decreased with increasing addition of water. The collected nanorods were easily dispersed in water producing aqueous nanofluids. The influence of size and fraction of the nanorods on the thermal conductivity of the nanofluids was investigated. The results show that the thermal conductivity of the nanofluids increased with the fraction of dispersed nanorods. The nanofluid, which consisted of silica-organic composite nanorods with the smallest length and aspect ratio, showed the largest enhancement of thermal conductivity.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (Project 50972052) and the Promotive Research Fund for Excellent Young and Middle-aged Scientists of Shandong Province (2009CL014). The authors are also indebted to Prof. W. Zhao and Mr. B. Zhu for their help in the thermal conductivity measurements.

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Authors and Affiliations

  1. School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China

    Haixia Wang, Hui Zhao & Shiquan Liu

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  1. Haixia Wang
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  2. Hui Zhao
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  3. Shiquan Liu
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Correspondence to Shiquan Liu.

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Presented in part at the 1st International Congress on Advanced Materials held in Jinan, PRC from May 12–17, 2011.

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Wang, H., Zhao, H. & Liu, S. Preparation and Thermal Conductivity of Nanofluids Consisting of SiO2-Organic Composite Nanorods. J Inorg Organomet Polym 21, 946–949 (2011). https://doi.org/10.1007/s10904-011-9545-z

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  • DOI: https://doi.org/10.1007/s10904-011-9545-z

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