Abstract The pyrolysis behavior of hexanitrohexaazaisowurtzitane (HNIW) and HNIW/nano-Aluminum are investigated by non-isothermal differential scanning calorimetry/thermogravimetry/Pyrolysis-mass spectrometry/Fourier transform infrared spectroscopy (DSC/TG/Py-MS/FTIR) coupling analysis. The result shows that nano-Al improves the thermal stability of HNIW by swinging the very beginning of pyrolysis from synchronous bond cleavage of the highly strained molecular to the formation of HONO free radical corresponding with the increment of apparent activation energy. After the initial stage, nano-Al catalyzes the pyrolysis pathway to primary cleavage of C–N bond and releasing hyperbaric unstable N2O, which sequentially reacts with other gaseous products and Al.

中文翻译：

---

纳米铝对 HNIW 的热解途径重定向

摘要 采用非等温差示扫描量热法/热重法/热解-质谱法/傅里叶变换红外光谱(DSC/TG/Py-MS/FTIR)耦合分析研究了六硝基六氮杂异纤锌矿型结构(HNIW)和HNIW/纳米铝的热解行为。结果表明，纳米铝通过将热解的最初阶段从高应变分子的同步键断裂转变为与表观活化能增加相对应的 HONO 自由基，从而提高了 HNIW 的热稳定性。在初始阶段之后，纳米铝催化热解途径以初级裂解 C-N 键并释放高压不稳定 N2O，然后与其他气态产物和 Al 依次反应。