ABSTRACT Nano (H2dabco)[K(ClO4)3] (DAP-2) were successfully prepared via the milling method. The morphology and structure of the as-obtained sample were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The results showed the nano DAP-2 with nearly spherical morphologies have a narrow particle size distribution ranged from 1μm to 2μm. The thermal decomposition properties were investigated by thermogravimetric-differential scanning calorimeter (TG-DSC). The exothermal peak of nano DAP-2 thermal decomposition is 384.5°C decreased by 6.7°C compared with raw DAP-2 (391.2°C). And the apparent activation energy (E a) of nano DAP-2 was calculated as 173.346 kJ mol−1 by Kissinger equation, which is lower than raw DAP-2 (177.699 kJ·mol−1). Sensitivity study showed that the nano DAP-2 (H50: 60.63 cm) exhibited lower impact sensitivity than raw DAP-2 (H50: 36.79 cm). Therefore, this work provides a simple and effective way to improve the thermal decomposition properties and safety performance of molecular perovskite energetic materials.

中文翻译：

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纳米（H2dabco）[K(ClO4)3]分子钙钛矿球磨制备与表征

摘要纳米(H2dabco)[K(ClO4)3] (DAP-2) 通过球磨法成功制备。通过扫描电子显微镜 (SEM)、X 射线衍射 (XRD) 和傅里叶变换红外光谱 (FT-IR) 对所获得样品的形貌和结构进行表征。结果表明，具有近球形形态的纳米 DAP-2 具有从 1μm 到 2μm 的窄粒径分布。通过热重-差示扫描量热仪(TG-DSC)研究热分解性能。纳米 DAP-2 热分解的放热峰为 384.5°C，与原始 DAP-2 (391.2°C) 相比降低了 6.7°C。并且纳米DAP-2的表观活化能（E a ）通过Kissinger方程计算为173.346 kJ mol-1，低于原始DAP-2（177.699 kJ·mol-1）。敏感性研究表明，纳米 DAP-2（H50：60.63 cm）的冲击敏感性低于原始 DAP-2（H50：36.79 cm）。因此，这项工作为提高分子钙钛矿含能材料的热分解性能和安全性能提供了一种简单有效的方法。