Evaluation of thermal hazards based on thermokinetic parameters of 2-(1-cyano-1-methylethyl)azocarboxamide by ARC and DSC

Thermal runaway behavior and hazard evaluation of cumene hydroperoxide mixed separately with four products under adiabatic conditions coupled with risk matrix method

“…Accelerating rate calorimeter, which was purchased from the Thermal Hazard Technology Company in the United Kingdom, has been used widely for estimating thermal runaway scenarios of some OPs and other energetic materials. Although the pressure hazards can be verified by the confinement test in ASTM 476‐87 and ASTM E1981‐98, the inadequate adiabatic isolation of the confinement cell, the pressure test is generally replaced by an adiabatic calorimeter 21‐26 . A series of tests were carried out by ARC with a sealed titanium bomb due to its excellent thermal conductivity and thermal inertia 21‐26 .…”

“…Research flow chart of cumene hydroperoxide (CHP) and after mixed with its products under adiabatic conditions verified by the confinement test in ASTM 476-87 and ASTM E1981-98, the inadequate adiabatic isolation of the confinement cell, the pressure test is generally replaced by an adiabatic calorimeter. [21][22][23][24][25][26] A series of tests were carried out by ARC with a sealed titanium bomb due to its excellent thermal conductivity and thermal inertia. [21][22][23][24][25][26] For the ARC experiments, an adiabatic dynamic condition coupled with a heat-wait-search procedure and a 10:1 mixing ratio were selected to be consistent with previous experiments.…”

“…[21][22][23][24][25][26] A series of tests were carried out by ARC with a sealed titanium bomb due to its excellent thermal conductivity and thermal inertia. [21][22][23][24][25][26] For the ARC experiments, an adiabatic dynamic condition coupled with a heat-wait-search procedure and a 10:1 mixing ratio were selected to be consistent with previous experiments. 14 During this procedure, the temperature of the bomb filled with samples was raised from room temperature to the minimum temperature of the heat-wait-search procedure.…”

Effects of Micro‐Encapsulation Treatment on the Thermal Safety of High Energy Emulsion Explosives with Boron Powders

“…Thermal runaway reaction is usually accompanied with high temperature, pressure, calorific value and pressure rise rate, so the adiabatic calorimeter ARC was used to ensure the thermal runaway reaction carried out safely [28]. With the help of ARC, the thermal decomposition processes of four groups of emulsion explosive samples with different additives under adiabatic conditions were studied, and the peak temperature, peak pressure, self-heating rate and pressure rise rate of thermal runaway reaction were important parameters to quantify the risk of thermal runaway reaction [29]. As shown in Figure 5, sample B and C showed obvious thermal runaway reactions in the experiments, while the sample A (reference sample) and sample D (added with PMMA/B powders) appeared only a weak self-thermal decomposition.…”

Thermal Safety Performance Evaluation for Typical Free Radical Polymerization Initiator of Tert‐butyl Peroxypivalate

“…Tan et al [10] analyzed the thermal decomposition characteristics and the relationship between quality and SADT of benzoyl peroxide, it was found that the SADT gradually decreased with the increased of the packing quality. Lu et al [11,12] studied the thermal decomposition behavior of azo radical initiators 2-(1-cyano-1-methylethyl) azocarboxamide (CABN) in dynamic and adiabatic environments by Differential Scanning Calorimetry and accelerated calorimeter. CABN decomposed at low temperature (90.0-100.0°C) and released a large amount of gaseous products.…”