Effect of khladons on the concentration limits of inflamation of hydrocarbons accompanying combustion in oxidizing media with an elevated oxygen content

Abstract

It has been unclear in which cases halogen-containig hydrocarbons manifest inhibiting properties relative to the concentration limits of inflammation of organic materials in media with an elevated oxygen content, and in which they are capable of spontaneous combustion (for example, in the case of 1,2-dibromotetrafluoroethane). In this connection, the authors studied the effect of khladons on the concentration limits of inflammation of hydrocarbon accompanying combustion in oxidizing media consisting of nitrogen and oxygen with the oxygen volume concentration equal to 20.6, 40, 60, and 100%. It is shown that the regions of inflammation determined in the type II setup are wider than for measurements using the standard apparatus, but as the oxygen content is raised in the oxidizing medium the relative significance of this difference decreases. It is demonstrated that the concentrations of the combustible material and of the fully substitued fluorine- and chlorine-containing diluent at the point of retardation for combustion in oxidizing media with an elevated oxygen content can be predicted.