Estimation of Critical Temperature of Thermal Explosion for Nitrosubstituted Azetidines Using Non-isothermal DSC

作者：Hu Rongzu^*; Zhao Fengqi; Gao Hongxu; Zhang Jiaoqiang; Zhang Hai; Ma Haixia

来源：Chinese Journal of Chemistry, 2009, 27(11): 2145-2154.

DOI：10.1002/cjoc.200990359

• physical chemistry
• nitrosubstituted azetidines
• critical temperature
• thermal explosion
• non-isothermal DSC

Based on reasonable hypothesis, two general expressions and their six derived formulae for estimating the critical temperature (T(b)) of thermal explosion for energetic materials (EM) were derived from the Semenov's thermal explosion theory and eight non-isothermal kinetic equations We can easily obtain the values of the initial temperature (T(0i)) at which DSC Curve deviates from the baseline of the non-isothermal DSC curve of EM. the onset temperature (T(ei)), the exothermic decomposition reaction kinetic parameters and the values of T(00) and T(e0) from the equation T(0i) or (ei) = T(00) (or) (e0) + a(1)beta(1)+a(2)beta(2), + a(L-2)beta(L-2), i=1,2. ,L and then calculate the values of T(b) by the six derived formulae. The T(b) values for seven nitrosubstiluted azetidines, 3,3-dinitroazendiniurn nitrate (1), 3, 3-dinitroazeudinium picrate (2), 3,3-dinitroazetidinium-3-nitro-1,2,4-triazol-5-onate (3), 1,3-bis(3'3'-dinitroazetidine group)-2,2-dinitiopropane (4), 1-(2',2',2'-trinitroethyl)-3-dinitroazetidine (5), 3,3-dibitroazetidinium perchlorate (6) and 1-(3',3-dinitroazetidineyl)-2,2-dinitropropane (7), obtained with the six derived formulae are agreeable to each other, whose differences are within 1.5% The results indicate that the heat-resistance stability of the seven nitrosubstituted azelidines decreases in the order 6>7>5>4>3>2>1

• 出版日期2009-11
• 单位西北大学; 西安近代化学研究所; 西北工业大学