V. P. Kirlitsa’s research while affiliated with Minsk State Linguistic University and other places

The factors exerting a significant influence on the termination of the combustion of natural materials (wood and peat) were studied with the use of synthetic nitrogen- and phosphorus-containing fire retardants with different efficiencies. With the use of a mathematical experimental design method, it was confirmed that the inhibition of gas-phase radical processes by volatile nitrogen-containing products is the predominant process of combustion suppression. It was found that the synergism of the nitrogen–phosphorus flame retardants is determined by their complex action: phosphorus mainly enters into organomineral structures in a the condensed phase, and nitrogen inhibits reactions in a gas phase.

The method of mathematical planning of the experiments was used for determination of the leading factors influencing on the efficiency of nitrogen-phosphorus-containing flame inhibitors for wood, peat. It was found, that the inhibition of free radical reactions in the gaseous phase with volatile nitrogen products is dominating mechanism of burn termination of combustible natural materials (wood, peat).