中北大学环境与安全工程学院, 山西 太原 030051
School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China
为了改善高氯酸铵基分子钙钛矿((H2dabco)[NH4(ClO4)3]，DAP)作为含能材料的安全性能，用球磨法制备出微纳米级DAP颗粒材料，采用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、傅里叶红外光谱仪(FT-IR)以及Raman光谱仪分别对其形貌、结构进行表征。采用热重分析-差示扫描量热(TG-DSC)对其热分解性能进行表征，按GJB770B-2005爆炸概率法测试其撞击感度。结果表明，球磨法得到的细化DAP为0.5~10 μm的微纳米级椭球颗粒，球磨后颗粒表面近似光滑，展现了良好的晶型稳定性；细化后DAP热分解峰温度为370.6 ℃，与原料DAP（热分解峰温度385.4 ℃）相比明显降低；与原料DAP(撞击感度为56%)相比，细化后DAP的撞击感度(28%)大幅降低。
In order to improve the safety performances of ammonium perchlorate-based molecular perovskite ((H2dabco)[NH4(ClO4)3], DAP), DAP with micro/nano particles were prepared by ball milling. The morphology and structure of the as-obtained samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and Raman spectroscopy (Raman). Thermal decomposition and impact sensitivity was investigated by thermo-gravimetric analysis-differential scanning calorimetry(TG-DSC) and GJB770B-2005 explosion probability method, respectively. The DAP obtained by ball-milling were micro/nano with ellipsoidal particles of 0.5-10 μm, which had relatively smooth surface and good phase stability. The peak temperature of thermal decomposition of micro/nano DAP was 370.6 ℃, which obviously decreased as compared with raw DAP(385.4 ℃). Futhermore, the impact sensitivity of micro/nano DAP(28%) was much lower than that of raw DAP (56%).
LI Hao-min, CAO Xiong, WANG Bao-min, et al. Preparation and Safety Performances of Ammonium Perchlorate-based Molecular Perovskite Micro/nano Particles by Ball Milling[J]. Chinese Journal of Energetic Materials, 2020, 28(3):203-207. DOI:10.11943/CJEM2019173.