Abstract
Dense smoke released during the combustion of polystyrene (PS) potentially limits its applications in some fields. In this study, a Zr-based metal-organic framework (UiO-66) was prepared via the solvothermal method and added to PS to suppress its smoke emission. Well-defined UiO-66 particles showed an excellent dispersion state and good compatibility in the PS matrix. The introduction of UiO-66 improved the flame retardancy and smoke suppression of PS. The peak heat-release rate and total heat release were reduced by 26.8% and 14.7%, respectively, for PS/ UiO-66-5 wt%. Moreover, the smoke emissions of PS composites were evidently suppressed, and more than a 35% reduction in total smoke production was obtained with 5-wt% UiO-66. Through the analysis of the residues and pyrolysis products of PS composites, the mechanisms of enhanced flame retardancy and smoke suppression can being speculated as the promoted char-forming and heat barrier of UiO-66. This work offers a significant reference for the further study of UiO-66 and polymer materials.
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Acknowledgments: This work was financially supported by the National Natural Science Foundation of China (No. 51576183); the National Key R&D Program of China (No. 2016YFC0801505), the Fundamental Research Funds for the Central Universities of China (No. WK2320000041 and 2320000035), and the China Postdoctoral Science Foundation China Postdoctoral Science Foundation (2018M 632550) for which the authors would like to express their gratitude. We thank LetPub (www.letpub.com) for its linguistic assistance during the preparation of this manuscript.
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Chen, W., Jiang, Y., Qiu, R. et al. Investigation of UiO-66 as Flame Retardant and Its Application in Improving Fire Safety of Polystyrene. Macromol. Res. 28, 42–50 (2020). https://doi.org/10.1007/s13233-019-7165-6
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DOI: https://doi.org/10.1007/s13233-019-7165-6