ON THE QUESTION OF ASSESSING FIRE HAZARD INDICATORS OF POLYMERIC MATERIALS BY THE METHOD OF SYNCHRONOUS THERMAL ANALYSIS

 materials of various chemical natures using the STA "Netzsch" 449 F 5 Jupiter thermal analyzer are presented. The feasibility of assessing the autoignition temperature using three analytical signals simultaneously is demonstrated: differential scanning calorimetry, differential the rmogravimetry, and the first derivative of differential scanning calorimetry. To diagnose the autoignition temperature using the synchronous thermal analysis method, the following conditions must be met: being in the temperature range of the exothermic peak of thermooxidative destruction of the polymer; proximity to the inflection point on the DSC-curve; proximity to the maximum of the DTG-peak; maximum heat release intensity.
The problem of assessing the heat of combustion of substances and materials is also considered. To enhance the practical significance of heat of combustion assessment results, a method for assessing the heat of combustion using synchronous thermal analysis in an oxidizing air environment is proposed, taking into account the results of testing the material under study in an inert atmosphere.