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Synergistic flame retardant effect of melamine in ethylene–vinyl acetate/layered double hydroxides composites

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Abstract

Mg–Al–Fe ternary layered double hydroxides (LDHs) were synthesized based on Bayer red mud by a calcination–rehydration method, and characterized by X-ray diffraction (XRD) and thermogravimetric analysis (TG). The synergistic effects between melamine and LDHs in ethylene–vinyl acetate (EVA) composites were studied using limiting oxygen index (LOI), UL 94, cone calorimeter test (CCT), smoke density test (SDT), and thermogravimetry–fourier transform infrared spectrometry (TG–IR). Though melamine decreases the LOI values of EVA/LDHs/melamine composites, a suitable amount of melamine can apparently improve UL 94 rating; the composite with 45 % LDHs and 5 % melamine can pass UL 94 test. The CCTs results indicate that heat release rates (HRR) of EVA/LDHs/melamine composites decreased in comparison with that of EVA/LDHs composites. The SDT results show that melamine is helpful to smoke suppression. The TG–IR data show that the ternary composites have a higher thermal stability than that of the binary composites.

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Acknowledgements

The authors gratefully acknowledge the National Natural Science Foundation of China (No. 51106078) and the Out-standing Young Scientist Research Award Fund from Shandong Province (BS2009CL015, BS2011CL018).

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Authors and Affiliations

  1. College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, 266042, People’s Republic of China

    Long Li, Yi Qian & Chuanmei M. Jiao

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  1. Long Li
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  2. Yi Qian
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  3. Chuanmei M. Jiao
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Correspondence to Yi Qian.

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Li, L., Qian, Y. & Jiao, C.M. Synergistic flame retardant effect of melamine in ethylene–vinyl acetate/layered double hydroxides composites. J Therm Anal Calorim 114, 45–55 (2013). https://doi.org/10.1007/s10973-012-2808-2

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  • DOI: https://doi.org/10.1007/s10973-012-2808-2

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