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Preparation and properties of alkaline functionalized carbon nanotubes reinforced polyurethane composites

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Abstract

Composites consisting of polyurethane (PU)/carbon nanotubes (CNTs) have been successfully prepared by solution mixing method. CNTs were modified through mechano-chemical reaction to increase the compatibility with PU via hydrogen bondings. SEM microphotographs proved that modified CNTs (M-CNTs) became shorter and FTIR spectra showed that hydroxyl groups had been introduced to the surface of M-CNTs. SEM images of PU/M-CNTs composites also proved that M-CNTs were effectively dispersed in PU matrix. Mechanical property tests showed that addition of M-CNTs could significantly improve the tensile properties of PU/M-CNTs composite (breaking strength enhancement ratio for composite with 5.0 wt% M-CNTs was 103.81 %). The thermal stability of composites with M-CNTs was also improved. The initial degradation temperature enhancement was 19.9 oC for the composite with 0.5 wt% M-CNTs. Electrical property tests showed that the electrical properties were improved by adding M-CNTs. The volume conductivities increased 3 and 5 orders of magnitude for the composites with 5.0 wt% and 10 wt% M-CNTs, respectively. The addition of M-CNTs had little effect on the elastic properties of the composites.

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Authors and Affiliations

  1. School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University, Shanghai, 201209, P.R. China

    Jingrong Wang, Haiping Xu, Dandan Yang & Yihua Wu

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  1. Jingrong Wang
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  2. Haiping Xu
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  3. Dandan Yang
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  4. Yihua Wu
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Correspondence to Jingrong Wang.

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Wang, J., Xu, H., Yang, D. et al. Preparation and properties of alkaline functionalized carbon nanotubes reinforced polyurethane composites. Fibers Polym 14, 571–577 (2013). https://doi.org/10.1007/s12221-013-0571-z

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  • DOI: https://doi.org/10.1007/s12221-013-0571-z

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