Increasing fire retardancy of wood by impregnation with inorganic salts recovered from exhausted fire extinguishing powder
- 12 Downloads
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.
- Michelotti M (2012) Process for the recovery of extinguishing powders. EP2522410(A1), European Patent Office. http://patents.google.com/patent/EP2522410A1/en. Accessed 9 May 2019