STUDYING THE POSSIBILITY OF INCREASING THE MULTIPLICITY OF FIRE EXTINGUISHING FOAMS USING STANDARD FOAMING AGENTS THROUGH THE USE OF VARIOUS MODIFYING ADDITIVES

The possibility of increasing of the multiplicity and stability of foams based on large non-deficient surfactants by use of modifying additives was investigated. Foaming properties of solutions with modifying additives were evaluated in terms of multiplicity and stability of the foam according to National Standard of Russian Federation 50588–2012 “Foaming agents for fire extinguishing. General technical requirements and test methods”. To select the optimum amount of additives the dependence of the multiplicity of foam from the concentration of the modifying additive was determined. The most promising compounds for the preparation of foaming agents on the basis of industrial surfactants and modifying additives were identified. On the result of research, these are based on the surfactant sodium dodecyl sulfate with the addition of isopropyl alcohol (5 % vol.) and ethylene glycol (15 %vol.), as well as foaming agent PÎ-6K and isopropyl alcohol (5 %vol.). The possibility of using additives of isopropyl alcohol and ethylene glycol to prolong the life of the foam and improve the foaming properties of standard solutions of surfactants is shown.