Increasing fire retardancy of wood by impregnation with inorganic salts recovered from exhausted fire extinguishing powder

  • Panagiotis K. TsolakisEmail author
  • Charalampos Lykidis
Brief Original


The fire retardancy of wood impregnated with a mixture of ammonium dihydrogen phosphate and ammonium sulfate recovered from exhausted fire extinguishing powder was assessed. Impregnated specimens recorded a 14.3% total weight loss due to combustion, as opposed to 93.8% for the untreated ones. Treated specimens also showed a significantly lower burning time and maximum burning rate as well as higher sustainable ignition time than untreated ones.



The authors would like to thank Mr. N. Triantafyllopoulos for his assistance in conducting the impregnation experiments and also Mr. G. Archontis and Mr. Th. Stamou (directors of MIRTEC S.A.) for their support with this project.

Compliance with ethical standards

Conflict of interest

No conflict of interest was reported by the authors.


  1. Bryn O, Bekhta P, Sedliačik J, Forosz V, Galysh V (2016) The effect of diffusive impregnation of birch veneers with fire retardant on plywood properties. BioResources 11(4):9112–9125. CrossRefGoogle Scholar
  2. Kong L, Guan H, Wang X (2018) In situ polymerization of furfuryl alcohol with ammonium dihydrogen phosphate in poplar wood for improved dimensional stability and flame retardancy. ACS Sustain Chem Eng 6(3):3349–3357. CrossRefGoogle Scholar
  3. Mantanis GI, Martinka J, Lykidis C, Ševčík L (2019) Technological properties and fire performance of medium density fibreboard (MDF) treated with selected polyphosphate-based fire retardants. Wood Mat Sci Eng. Google Scholar
  4. Michelotti M (2012) Process for the recovery of extinguishing powders. EP2522410(A1), European Patent Office. Accessed 9 May 2019
  5. Pries M, Mai C (2013) Fire resistance of wood treated with a cationic silica sol. Eur J Wood Prod 71(2):237–244. CrossRefGoogle Scholar
  6. Terzi E, Kartal SN, White RH, Shinoda K, Imamura Y (2011) Fire performance and decay resistance of solid wood and plywood treated with quaternary ammonia compounds and common fire retardants. Eur J Wood Prod 69(1):41–51. CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Materials Industrial Research and Technology Center S.A. (MIRTEC S.A.)VolosGreece
  2. 2.University of ThessalyKarditsaGreece

Personalised recommendations