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采用差示扫描量热–热重(DSC–TG)同步热分析法和热重–红外(TG–FTIR)联用技术,通过研究高氯酸铵/六硝基六氮杂异伍兹烷(AP/HNIW)混合体系的热分解行为,探索了混合体系中AP与HNIW的相互作用。采用Kissinger法计算了AP/HNIW混合体系的热分解动力学参数。结果表明,不同比例的混合体系中HNIW均促进了AP的高温分解,使AP的分解峰由2个变成了1个,分解峰温提高到288℃或285℃。该促进作用与AP和HNIW的质量比(1:1和2:1)无明显相关性。混合体系中HNIW和AP热分解剧烈,并且分解反应完全,气相产物主要为N2O、NO、NO2、CO2和HCOOH。与单独体系相比,混合体系中AP将HNIW的表观分解活化能提高了51 k J/mol,而HNIW对AP低温热分解活化能无明显影响。
The effects of ammonium perchlorate / hexanitrohexaazaisowurtzitane (APT) on the stability and stability of the composites were studied by differential scanning calorimetry-thermogravimetric analysis (DSC-TG) and thermogravimetric-infrared (TG- / HNIW) hybrid system and explored the interaction between AP and HNIW in the mixed system. Kissinger method was used to calculate the thermal decomposition kinetic parameters of AP / HNIW mixed system. The results showed that HNIW promoted the pyrolysis of APs in different proportions of mixed system. The decomposition peak of AP changed from 2 to 1 and the peak temperature of decomposition increased to 288 ℃ or 285 ℃. This promoting effect was not significantly correlated with the mass ratio of AP to HNIW (1: 1 and 2: 1). In the mixed system, HNIW and AP thermally decomposed violently, and the decomposition reaction was complete. The main products of the gas phase were N2O, NO, NO2, CO2 and HCOOH. Compared with the single system, the apparent activation energy of HNIW was increased by 51 kJ / mol in the mixed system, while HNIW had no obvious effect on the activation energy of AP.