2-（Dinitromethylene）-1,3-diazacycloheptane （DNDH） was prepared by the reaction of 1,1-diamino-2,2-dinitro- ethylene （FOX-7） with 1,4-diaminoethane in NMP. Thermal decomposition behavior of DNDH was studied under...2-（Dinitromethylene）-1,3-diazacycloheptane （DNDH） was prepared by the reaction of 1,1-diamino-2,2-dinitro- ethylene （FOX-7） with 1,4-diaminoethane in NMP. Thermal decomposition behavior of DNDH was studied under the non-isothermal conditions with DSC method, and presents only one intensely exothermic decomposition process The kinetic equation of the decomposition reaction is da/dT= 103388× 3a2/3exp（--3.353 ×10^5/RT）/fl. The critical temperature of thermal explosion is 215.97℃. Specific heat capacity of DNDH was studied with micro-DSC method and theoretical calculation method, and the molar heat capacity is 215.40 Jomol-1,K-1 at 298.15 K. Adiabatic time-to-explosion was calculated to be 92.07 s. DNDH has same thermal stability to FOX-7.展开更多
基金Project supported by the National Natural Science Foundation of China （No. 20803058）, the Basal Science Foundation of National Defense （No. B 0920110005 ） and the Education Committee Foundation of S haanxi Province （Nos. 2010J K881, 09J K820）.
文摘2-（Dinitromethylene）-1,3-diazacycloheptane （DNDH） was prepared by the reaction of 1,1-diamino-2,2-dinitro- ethylene （FOX-7） with 1,4-diaminoethane in NMP. Thermal decomposition behavior of DNDH was studied under the non-isothermal conditions with DSC method, and presents only one intensely exothermic decomposition process The kinetic equation of the decomposition reaction is da/dT= 103388× 3a2/3exp（--3.353 ×10^5/RT）/fl. The critical temperature of thermal explosion is 215.97℃. Specific heat capacity of DNDH was studied with micro-DSC method and theoretical calculation method, and the molar heat capacity is 215.40 Jomol-1,K-1 at 298.15 K. Adiabatic time-to-explosion was calculated to be 92.07 s. DNDH has same thermal stability to FOX-7.
