Thermal decomposition of 3,4-bis(4′-aminofurazano-3′) furoxan

The thermal decomposition of 3,4-bis(4′-aminofurazano-3′) furoxan (BAFF) was studied by DSC, TG, the combination technique of in situ thermolysis cell with rapid-scan Fourier transform infrared spectroscopy (thermolysis/RSFT-IR) and the fast thermolysis probe with rapid-scan Fourier transform infrared spectroscopy (fast thermolysis/RSFT-IR). The result shows that the melting point of BAFF is 168.4 °C, the peak temperatures of the two exothermic peaks are respectively 260.4 °C and 338.8 °C on DSC curve. The apparent activation energy Ea and the pre-exponential factor A are respectively 122.21 kJ mol−1 and 109.89 s−1 for major exothermic decomposition process of BAFF. The kinetic equation of major exothermic decomposition for BAFF is dα/dt =1010.07exp(−1.46993 × 104/T)(1 − α) [−ln(1 − α)]1/3. The thermal decomposition gaseous products of BAFF consist of CO2, NO2, N2O and NO. The BAFF is shown by IR spectroscopy to convert to ammonium dicyanamide (NH4[N(CN)2]), cyclic azine residues (melamine or melamine-like).