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


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.


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



  1. 1.
    Jia P, Zhang M, Hu L, Feng G, Zhou Y. Synthesis of novel caged phosphate esters and their flame retardant effect on poly(vinyl chloride) blends. Chem Lett. 2015;44(9):1220–2.Google Scholar
  2. 2.
    Carroll WF, Johnson RW, Moore SS, Paradis RA (2017) 4–Poly(vinyl chloride). In: Kutz M, editor. Applied plastics engineering handbook, 2nd ed. The Vinyl Institute, Alexandria, VA: Matthew Deans; 2017. p. 73–89.Google Scholar
  3. 3.
    Sun YJ, Gao M, Chai ZH, Wang H. Thermal behavior of the flexible polyvinyl chloride including montmorillonite modified with iron oxide as flame retardant. J Therm Anal Calorim. 2018;131:65–70.Google Scholar
  4. 4.
    Ou YX, Chen Y, Wang XM. Flame-retarded polymeric materials. Beijing: National Defense Industry Press; 2001. p. 16–9.Google Scholar
  5. 5.
    Liu X, Wang JY, Yang XM, Wang YL, Hao JW. Application of TG/FTIR TG/MS and cone calorimetry to understand flame retardancy and catalytic charring mechanism of boron phosphate in flame-retardant PUR-PIR foams. J Therm Anal Calorim. 2017;130:1817–27.Google Scholar
  6. 6.
    Jiao YH, Wang X, Peng F, Xu JZ, Gao JG, Meng HJ. Increased flame retardant, smoke suppressant and mechanical properties of semi-rigid polyvinyl chloride (PVC) treated with zinc hydroxystannate coated dendritic fibrillar calcium carbonate. J Macromol Sci B. 2014;53(3):541–54.Google Scholar
  7. 7.
    Klapiszewski L, Tomaszewska J, Skórczewska K, Jesionowski T. Preparation and characterization of eco-friendly Mg(OH)2 lignin hybrid material and its use as a functional filler for poly(vinyl chloride). Polymers. 2017;9(7):258.Google Scholar
  8. 8.
    Zhang ZF, Wu WH, Zhang MJ, Qu JM, Shi L, Qu HQ, et al. Hydrothermal synthesis of 4ZnO center dot B2O3 center dot H2O/RGO hybrid material and its flame retardant behavior in flexible PVC and magnesium hydroxide composites. Appl Surf Sci. 2017;425:896–904.Google Scholar
  9. 9.
    Basfar AA. Flame retardancy of radiation cross-linked poly(vinyl chloride) (PVC) used as an insulating material for wire and cable. Polym Degrad Stab. 2002;77(2):221–6.Google Scholar
  10. 10.
    Schartel B, Kunze R, Neubert D, Tidjani A. ZnS as fire retardant in plasticised PVC. Polym Int. 2002;51(3):213–22.Google Scholar
  11. 11.
    Sang B, Li Z, Yu L, Li X, Zhang Z. Preparation of zinc hydroxystannate-titanate nanotube flame retardant and evaluation its smoke suppression efficiency for flexible polyvinyl chloride matrix. Mater Lett. 2017;204:133–7.Google Scholar
  12. 12.
    Zhang B, Han J. Morphology control of zinc hydroxystannate microcapsules by sol-gel method and their enhanced flame retardancy properties for polyvinyl chloride composites. J Sol–Gel Sci Technol. 2017;81(2):442–51.Google Scholar
  13. 13.
    Zhang B, Liu H, Han J. Zinc hydroxystannate microencapsulated to improve its safety and application to flame-retardant, smoke-suppressed polyvinyl chloride composites. J Alloys Compd. 2017;712:768–80.Google Scholar
  14. 14.
    Yang G, Wu WH, Dong HX, Wang YH, Qu HQ, Xu JZ. Synergistic flame-retardant effects of aluminum phosphate and trimer in ethylene–vinyl acetate composites. J Therm Anal Calorim. 2018;132:919–26.Google Scholar
  15. 15.
    Kicko-Walczak E. Study on flame retardant unsaturated polyester resins-an overview of past and new developments. Polimery. 1999;44(11–12):724–9.Google Scholar
  16. 16.
    Xu JZ, Zhang CY, Qu HQ, et al. Zinc hydroxys-tannate and zinc stannate as flame retardant agents for flexible PVC. J Appl Polym Sci. 2005;98:1469–75.Google Scholar
  17. 17.
    Sun YJ, Gao M, Chai ZH, Wang H. Thermal behavior of the flexible polyvinyl chloride including montmorillonite modified with iron oxide as flame retardant. J Therm Anal Calorim. 2017;131:65–70.Google Scholar
  18. 18.
    Kissinger HE. Reaction kinetics in differential thermal analysis. Anal Chem. 1957;29:1702–6.Google Scholar
  19. 19.
    Akahira T, Sunose T. Method of determining activation deterioration constant of electrical insulating materials. Res Rep Chiba Inst Technol (Sci Technol). 1971;16:22–31.Google Scholar
  20. 20.
    Ozawa T. A new method of analyzing thermogravimetric data. Bull Chem Soc Jpn. 1965;38:1881–6.Google Scholar
  21. 21.
    Flynn JH, Wall LA. A quick, direct method for the determination of activation energy from thermogravimetric data. J Polym Sci B Polym Phys. 1966;4:323–8.Google Scholar
  22. 22.
    Nakayama N, Kosuge K, Kachi S, Shinjo T, Takada T. Magnetic properties of FeSn(OH)6 and its oxidation product FeSnO(OH)5. Mater Res Bull. 1978;13(1):17–22.Google Scholar
  23. 23.
    Welch MD, Kampf AR. Stoichiometric partially-protonated states in hydroxide perovskites: the jeanbandyite enigma revisited. Miner Mag. 2017;81(2):297–303.Google Scholar
  24. 24.
    Huanga D, Fuac X, Longc J, Jianga X, Changa L, Menga S, et al. Hydrothermal synthesis of MSn(OH)6 (M = Co, Cu, Fe, Mg, Mn, Zn) and their photocatalytic activity for the destruction of gaseous benzene. Chem Eng J. 2015;269:168–79.Google Scholar
  25. 25.
    Selvi J, Mahalakshmi S, Parthasarathy V. Synthesis, structural, optical, electrical and thermal studies of poly(vinyl alcohol)/CdO nanocomposite films. J Inorg Organomet Polym Mater. 2017;27(6):1918–26.Google Scholar
  26. 26.
    Qi YX, Wu WH, Han LJ, Qu HQ, Han X, Wang AQ, et al. Using TG-FTIR and XPS to understand thermal degradation and flame-retardant mechanism of flexible poly(vinyl chloride) filled with metallic ferrites. J Therm Anal Calorim. 2015;123(2):1263–71.Google Scholar
  27. 27.
    Xu JZ, Jiao YH, Zhang B, Qu HQ, Yang GZ. Tin dioxide coated calcium carbonate as flame retardant for semirigid poly(vinyl chloride). J Appl Polym Sci. 2006;101(1):731–8.Google Scholar
  28. 28.
    Qu HQ, Wu WH, Wei HY, Xu JZ. Metal hydroxystannates as flame retardants and smoke suppressants for semirigid poly(vinyl chloride). J Vinyl Addit Technol. 2008;14(2):84–90.Google Scholar
  29. 29.
    Subasinghe A, Das R, Bhattacharyya D. Parametric analysis of flammability performance of polypropylene/kenaf composites. J Mater Sci. 2016;51(4):2101–11.Google Scholar
  30. 30.
    Herzler J, Roth P. Shock tube study of the reaction of H atoms with SnCl4. ChemInform. 2002;21:5259–64.Google Scholar
  31. 31.
    Li ZW, Shao B, Huang YS, Li XH, Zhang ZJ. Effect of core-shell zinc hydroxystannate nanoparticle-organic macromolecule composite flame retardant prepared by masterbatch method on flame-retardant behavior and mechanical properties of flexible poly(vinyl chloride). Polym Eng Sci. 2014;54(9):1983–9.Google Scholar

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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