Method for rapidly calculating self-accelerated decomposition temperature of substance and application of method

The invention discloses a method for rapidly calculating the self-accelerated decomposition temperature of a substance and application of the method, and belongs to the technical field of research on rapid determination of thermal hazard characteristics of the substance. The technical problems of high risk and the like caused by long self-accelerated decomposition temperature test period and large test sample quantity are solved. The method comprises the following steps of: testing decomposition reaction and exothermic characteristics of a substance in air to obtain a thermal flow velocity curve of the substance; observing whether an exothermic peak appears in a thermal flow velocity curve within the range of room temperature to 300 DEG C, if the exothermic peak appears, calculating the thermal stability parameter of the substance, and calculating the thermodynamic parameter of the substance; the relation that the temperature changes along with a reaction heat release rate according to the thermodynamic param