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The block combustion, high char residues and smoke restrain effect of nano-FeSnO(OH)5 on polyvinyl chloride

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Abstract

Nanoscale and cubic-shaped FeSnO(OH)5 (ITOH) flame retardant was synthesized by co-precipitation method and characterized by X-ray diffraction and transmission electron microscopy (TEM). The blank poly(vinyl chloride) (PVC0) and flexible PVC/ITOH composites were investigated by the limiting oxygen index (LOI), cone calorimetric test, tensile test and thermogravimetric analysis. The results showed that compared with PVC0, the LOI of PVC sample treated with 15 phr ITOH (PVC15) increases by 7.7%, and ITOH could more effectively promote the dehydrochlorination reaction of PVC. The flame of PVC15 disappeared for up to 165 s when it burned for 120 s, which significantly reduced the total heat release and total smoke production of PVC. This phenomenon not only can effectively prevent the proliferation of fire, but also facilitates the evacuation of people in the event of a fire. Lewis acid FeCl2 and FeOCl, assigned by the Fe2p spectra of char residue, could effectively catalyze the cross-linking of PVC into carbon.

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Authors and Affiliations

  1. Engineering Technology Research Center for Flame Retardant Materials and Processing Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Environmental Science, Hebei University, No. 180 Wusi East Road, Baoding, 071002, Hebei Province, China

    He Zhao, Jing Wu, Wei-Dong Hu, Yun-Hong Jiao & Jian-Zhong Xu

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  1. He Zhao
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  2. Jing Wu
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  3. Wei-Dong Hu
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  4. Yun-Hong Jiao
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  5. Jian-Zhong Xu
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Correspondence to Yun-Hong Jiao.

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Zhao, H., Wu, J., Hu, WD. et al. The block combustion, high char residues and smoke restrain effect of nano-FeSnO(OH)5 on polyvinyl chloride. J Therm Anal Calorim 137, 1255–1265 (2019). https://doi.org/10.1007/s10973-019-08054-6

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  • DOI: https://doi.org/10.1007/s10973-019-08054-6

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