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Influence of Fe2O3 on smoke suppression and thermal degradation properties in intumescent flame-retardant silicone rubber

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Abstract

This article examines the feasibility of intumescent flame retardant (based on phosphorus acid, melamine, and pentaerythritol) as a flame retardant and Fe2O3 as a smoke suppression agent in silicone rubber (SR) composites. Smoke suppression of Fe2O3 on intumescent flame-retardant SR composites was investigated using smoke density test and cone calorimeter test (CCT). And, the flammability of SR composites was characterized using CCT at an incident heat flux of 50 kW m−2. The test results further revealed that Fe2O3 could increase smoke suppression efficiency and thermal degradation temperature. Fe2O3 can promote early cross-linking of polymer during decomposition to increase char formation. The silica ash layer integrity governs the efficiency of diffusion barrier that restricts the diffusion of fuels into combustion zone and access of oxygen to the unburned fuels.

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Acknowledgements

The authors gratefully acknowledge the National Natural Science Foundation of China (Nos. 51106078, 51206084), the Out-standing Young Scientist Research Award Fund from Shandong Province (BS2011CL018), and the University Research and Development Projects Shandong Province (J14LA13).

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Authors and Affiliations

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

    Xilei Chen, Mei Li, Jinlong Zhuo, Cuiyong Ma & Chuanmei Jiao

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  1. Xilei Chen
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  2. Mei Li
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  3. Jinlong Zhuo
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  4. Cuiyong Ma
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  5. Chuanmei Jiao
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Correspondence to Xilei Chen.

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Chen, X., Li, M., Zhuo, J. et al. Influence of Fe2O3 on smoke suppression and thermal degradation properties in intumescent flame-retardant silicone rubber. J Therm Anal Calorim 123, 439–448 (2016). https://doi.org/10.1007/s10973-015-4911-7

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  • DOI: https://doi.org/10.1007/s10973-015-4911-7

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