Investigation on Thermal Decomposition Characteristics of Trimethylolethane Trinitrate( TMETN)

The thermal decomposition characteristics of trimethylolethane trinitrate(TMETN) have been investigated by means of pressure DSC. Rusults show that, even though TMETN has the similar structure to nitroglycerin (NG), TMETN has totally different thermal decomposition characteristics. At normal pressure, TMETN has an exothermic decomposition peak, while NG has an endothermic peak ; at the condition of pressure, TMETN has two exothermic peaks. The shape, temperature and quantity of heat of the two peaks change with the increase of pressure. The kinetic parameters of TMETN have been obtained, and TMETNs decomposition mechanism has been also analysed.