Thermal Decomposition Study on a Green-light Fireworks Agent

摘要

A thermal stability assessment may provide important information for determination of safe conditions for the manufacture, storage and transportation of fireworks. In this paper, a pyrotechnic mixture used to make fireworks including potassium perchlorate / Barium nitrate / Al-Mg alloy / sulfur / Poly (vinyl chloride) / thenol-formaldehy resin were tested under different water content conditions by Accelerating Rate Calorimeter (ARC). The initial exothermic temperature, the time to maximum self-heating rate and other thermal decomposition characteristic parameters are all obtained as real time data. The parameters are corrected for thermal inertia at last. The corrected initial exothermic temperatures are 176.43 ℃, 139.73 ℃ and 116.26 ℃ respectively. It can be seen that the initial exothermic temperature of this fireworks agent decreases after adding water into the agent. The curves show that the reaction becomes more complex when the agent water dampened.