Abstract
This study deals with the preparation and dielectric properties of polyurethane (PU) elastomer films by resol-derived ordered mesoporous carbon (OMC) nanopowder incorporation in the PU polymer matrix. Resol-derived OMC with a 2D hexagonal mesoporous carbon framework is used as conducting fillers to achieve homogeneous dispersion and favorable interfacial interactions in the polymer matrix. The dielectric properties depend on the applied field frequency and the carbon filler weight fraction. The carbon fraction has little effect on the relative permittivity. The relative permittivity of all the PU-OMC composites increases with the decline of frequency. Incorporating a small amount of OMC into the PU polymer had no influence on the dielectric loss. Along with the increasing carbon fraction above the percolation threshold, dielectric loss of PU-OMC composites increases exponentially in the low frequency range. PU-0.75 wt% OMC composite possesses the best dielectric properties, and the obtained relative permittivity and dielectric loss at 1 kHz is 9.59 and 0.03018, respectively.
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Acknowledgments
This work was supported by PAPD, NSFC (90923029), NSF of Jiangsu Province (BK2009020), the Program for Changjiang Scholars and Innovative Research Team in University (IRT0968), the Funding of Jiangsu Innovation Program for Graduate Education (CXZZ11-0194), the Funding for Outstanding Doctoral Dissertation in NUAA (BCXJ11-02), and NUAA Research Fund for Fundamental Research.
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Chen, T., Qiu, J., Zhu, K. et al. Preparation and dielectric properties of a polyurethane elastomer filled with resol-derived ordered mesoporous carbon. J Mater Sci: Mater Electron 24, 2013–2018 (2013). https://doi.org/10.1007/s10854-012-1050-9
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DOI: https://doi.org/10.1007/s10854-012-1050-9