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Inherently flame-retardant flexible bio-based polyurethane sealant with phosphorus and nitrogen-containing polyurethane prepolymer

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Abstract

A novel phosphorus and nitrogen-containing flame-retardant polyurethane prepolymer (FRPUP) was successfully synthesized and characterized by FTIR, 1H NMR, and 31P NMR. The flame-retardant polyurethane sealants (FRPUS) were prepared by curing FRPUP with castor oil. The flame-retardant properties of samples were investigated by the limiting oxygen index and cone calorimeter testing (CCT). The results showed that FRPUP can improve the flame retardancy of polyurethane sealants (PUS). The thermal decomposition behavior of the PUS was investigated by thermogravimetric analysis. Moreover, the thermal degradation mechanisms of FRPUS were investigated by thermogravimetric analysis/infrared spectrometry, FTIR, and X-ray photoelectron spectroscopy. The results indicated that the good flame retardancy of FRPUS can be attributed to the synergistic effect of phosphorus and nitrogen in FRPUP.

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Acknowledgements

This work was supported by the forest research and special public service foundation (Grand No. 201404604).

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Authors and Affiliations

  1. Institute of Chemical Industry of Forestry Products, CAF, Nanjing, China

    Haiyang Ding, Chenglong Xia, Jifu Wang, Chunpeng Wang & Fuxiang Chu

  2. Key Laboratory of Biomass Energy and Material, Nanjing, Jiangsu, China

    Haiyang Ding, Chenglong Xia, Jifu Wang, Chunpeng Wang & Fuxiang Chu

  3. National Engineering Laboratory for Biomass Chemical Utilization, Nanjing, China

    Haiyang Ding, Chenglong Xia, Jifu Wang, Chunpeng Wang & Fuxiang Chu

  4. Key and Open Laboratory on Forest Chemical Engineering, SFA, Nanjing, 210042, China

    Haiyang Ding, Chenglong Xia, Jifu Wang, Chunpeng Wang & Fuxiang Chu

  5. Chinese Academy of Forestry, Beijing, 100091, China

    Fuxiang Chu

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  1. Haiyang Ding
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  2. Chenglong Xia
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Correspondence to Fuxiang Chu.

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Ding, H., Xia, C., Wang, J. et al. Inherently flame-retardant flexible bio-based polyurethane sealant with phosphorus and nitrogen-containing polyurethane prepolymer. J Mater Sci 51, 5008–5018 (2016). https://doi.org/10.1007/s10853-016-9805-y

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  • DOI: https://doi.org/10.1007/s10853-016-9805-y

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