- Thermal behavior, decomposition mechanism and thermal safety of 5,7-diamino-4,6-dinitrobenzenfuroxan (CL-14)
-
Thermal decomposition kinetics and mechanism of the high-energetic material 5,7-diamino-4,6-dinitrobenzenfuroxan (CL-14) were determined by differential scanning calorimetry (DSC), rapid scanning Fourier transform infrared spectroscopy, and simultaneous thermogravimetric and DSC analyses, coupled with FT-IR and mass spectroscopy. To evaluate the thermal safety of 5,7-diamino-4,6-dinitrobenzenfuroxan (CL-14), its specific heat capacity (Cp) was measured by DSC, and thermal conductivity (λ) was estimated. Kinetic parameters and heat of exothermic decomposition reaction of CL-14 were obtained by analysis of DSC curves. Kinetic parameters used to evaluate the thermal safety of CL-14, such as self-accelerating decomposition temperature (TSADT), critical temperature of thermal explosion (Tb) and impact sensitivity (H50), were obtained. Results showed that for CL-14, TSADT?=?282.0?°C and Tb?=?307.9?°C, whereas H50?=?39.79?cm, revealing that CL-14 had better thermal safety and heat resistance than HMX, RDX and GNTO.
- Fu, Xiao-Long,Fan, Xue-Zhong,Wang, Bo-Zhou,Huo, Huan,Li, Ji-Zhen,Hu, Rong-Zu
-
p. 993 - 1001
(2016/07/06)
-
- The activation of SNAr reactions by the superstrong electron-withdrawing substituent CF3S(O)=NSO2CF3
-
The chlorine lability of the 2-nitrochlorobenzene derivative which contains the superstrong electron-withdrawing substituent CF3S(O)=NSO2CF3 in position 4 has been compared with the analogous 4-trifluoromethylsulphonyl derivative and picryl chloride in nucleophilic substitution.During interaction with hard nucleophilic agents, the effect of one superstrong substituent approximately corresponds to the influence of two nitro groups in positions 2 and 4.With soft reagents, picryl chloride is more active than the compound containing the CF3S(O)=NSO2CF3 group, polarizable only with difficulty.
- Boiko, V. N.,Kirii, N. V.,Yagupolskii, L. M.
-
p. 119 - 124
(2007/10/03)
-
- Influence of strain on chemical reactivity. Relative reactivity of torsionally strained double bonds in 1,3-dipolar cycloadditions
-
The addition of picryl azide to a series of mono- and bicyclic olefins including trans- cycloalkenes and bridgehead alkenes is reported. Secondary reaction products were identified, and their mechanism of formation was explained by an analysis relating th
- Shea, Kenneth J.,Kim, Jang-Seob
-
p. 4846 - 4855
(2007/10/02)
-