REGULARITIES OF INFLUENCE OF TECHNOLOGICAL PARAMETERS AND EXTERNAL FACTORS ON THE IGNITION TEMPERATURE AND COMBUSTION TIME OF MAGNESIUM AND ALUMINUM IN DECOMPOSITION PRODUCTS OF METAL OXIDES

Abstract

Areas of application of pyrotechnic mixtures in various branches of economic activity and the main sources of their danger during fires and emergencies in their places of storage are analyzed.

Experimental researches are carried out and experimental-statistical models of complex influence on ignition temperature and burning time of magnesium and aluminum particles in decomposition products of metal oxides of the following parameters are developed: dispersion of metal fuel, relative oxygen content, external pressure.

New experimental and statistical models have been developed, which allow to calculate the levels of ignition temperature and combustion time of magnesium and aluminum particles in the products of thermal decomposition of metal oxides in the mode of dialogue and real time, forming a database on explosive combustion modes of mixtures. Experimental and statistical models allow to form a controlled database of ignition temperatures and combustion times of magnesium and aluminum powder particles in gaseous decomposition products of metal oxides under external heating.

The developed database is convenient for assessing the fire-hazardous properties of pyrotechnic articles based on pyrotechnic mixtures, the main parameters of which are elevated heating temperatures and external pressures and can be used as a basis for a more general managed database of theoretical and experimental data to determine fire-hazardous properties of pyrotechnic articles. in the conditions of external thermal actions.

The obtained results will be the basis for the organization and conduct of research on the fire-hazardous properties of pyrotechnic mixtures and the creation of a modern database of products and products for pyrotechnic purposes.