IMPROVING THE SUSTAINABILITY OF FIRE FOAMS USING POLYMERIC ADDITIVES OF DIFFERENT NATURE

This analysis is dedicated to the influence of water-soluble polymers on the stability, multiplicity and while for the complete destruction of the foam obtained from aqueous surfactantsolutions E-30 – polymer. Polyvinyltriazol, polymethacrylic acid, polyethylene oxide copolymer, sodium salt vinyltriazola with methacrylic acid (25.7 and 57.6 %), copolymer of vinylimidazole with the sodium salt of methacrylic acid (50 %) were used as the polymeric additives. It is shown that the nature of the emulsifier (E-30, volgonat) has virtually no effect on the multiplicity and stability of the resulting foams, so the effect of polymer additives was investigated using an emulsifier E-30. Total concentration of the surfactant E-30 and the foaming of the polymer in solution was 1 % made as used in industrial formulations foaming surfactant concentration is about 1 %. This concentration of surfactant is widely used in laboratory studies. Results of the study indicate that the number of polymer additives used less effective polyvinyltriazole and polyethylene oxide. The use of polyethylene oxide increases the stability and while for the complete destruction of the foam 1.2 times, multiplicity decreases from 7.5 to 6.5. Addition of methacrylic acid leads to an increase in foam stability of 1.3 times. Foam stability also depends on the molecular weight of the polymer. It has been shown that the use of copolymers with vinyltriazola sodium salt of methacrylic acid of varying composition leads to a slight increase in foam stability. Foam stability increases with increasing salt content in the copolymer, and while for the complete destruction of the foam, at the same time increased by 3.5 times. Use as a stabilizing additive vinylimidazole copolymer with sodium salt of methacrylic acid leads to a significant change in foam stability by 2.4 times, while for the complete destruction increased 3.8 times.