Reactive Hazard Assessments of the Symmetrical Organic Peroxides via Calorimetric Techniques

摘要

Three types of symmetrical dialkyl peroxides were dynamically scanned and under self-heating conditions to the accelerating decomposition status by differential scanning calorimeter (DSC), accelerating rate calorimeter (ARC), vent sizing package (VSP), and thermal screening unit (TSU). These organic peroxides are di-tert-butyl peroxide (DTBP), lauroyl peroxide (LPO), and dicumyl peroxide (DCPO). Exothermic thermogram and adiabatic runaway curves on decomposition of diaklyl peroxides were measured and assessed. Reactive rating on hazards can be characterized by the parameters such as exothermic onset temperature, heat of decomposition, maximum self-heat rate, maximum pressure-rising rate, adiabatic temperature rise, maximum pressure of decomposition, time-to-maximum rate (TMR), etc. Due to the complexity of functional groups in LPO and DCPO, calorimetric data from hydrogen peroxide and DTBP are compared to verify the characteristics on decomposition of LPO and DCPO.