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CuMoO4@hexagonal boron nitride hybrid: an ecofriendly flame retardant for polyurethane elastomer

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Abstract

A novel flame retardant (CuMoO4@h-BN) was synthesized through the co-precipitation method, and its structure and morphology were systematically characterized. CuMoO4@h-BN was added to polyurethane elastomer (PUE) to investigate the effect of thermal, flame retardancy and smoke suppression properties on the PUE composites. The results showed that 2 wt% CuMoO4@h-BN increased the residual char yield of the PUE composite notably to 9.8%. CuMoO4@h-BN exhibited an excellent charring effect. Compared with pure PUE, 2 wt% CuMoO4@h-BN decreased the peak heat release rate, total heat release and smoke density of the PUE composite by 73.6, 52.4 and 28.2%, respectively. CuMoO4@h-BN performed well in flame retardancy and smoke suppression. It may be attributed mainly to the physical barrier effect of h-BN and catalytic carbonization effect of CuMoO4. It is expected that this simple and inexpensive treatment of PUE may help expand the fire safety applications of the material.

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Acknowledgements

The authors are grateful to the Anhui Provincial Natural Science Foundation (1708085ME113), the Natural Science Research Project of Colleges and Universities in Anhui Province (KJ2018A0522) and Polymer Materials and Engineering Specialty Comprehensive Reform Pilot Project in College Quality Engineering Project of Anhui Province (2016zy031) for their financial support.

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  1. School of Materials Science and Chemical Engineering, Anhui Jianzhu University, 292 Ziyun Road, Hefei, Anhui, 230601, People’s Republic of China

    Wenzong Xu, Aijiao Li, Yucheng Liu, Rui Chen & Wu Li

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Correspondence to Wenzong Xu.

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Xu, W., Li, A., Liu, Y. et al. CuMoO4@hexagonal boron nitride hybrid: an ecofriendly flame retardant for polyurethane elastomer. J Mater Sci 53, 11265–11279 (2018). https://doi.org/10.1007/s10853-018-2390-5

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