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

  • He Zhao
  • Jing Wu
  • Wei-Dong Hu
  • Yun-Hong JiaoEmail author
  • Jian-Zhong Xu
Article
  • 7 Downloads

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.

Keywords

FeSnO(OH)5 Poly(vinyl chloride) Flame retardancy Mechanism 

Notes

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • He Zhao
    • 1
  • Jing Wu
    • 1
  • Wei-Dong Hu
    • 1
  • Yun-Hong Jiao
    • 1
    Email author
  • Jian-Zhong Xu
    • 1
  1. 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 ScienceHebei UniversityBaodingChina

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