In the field of energetic materials, cocrystallization is a new strategy to modify the properties of existing energetic materials. N,N‐ Bis (Trinitroethyl) nitramine (BTNEN), is a known energetic material which possesses high sensitivity and detonation performance. In order to reduce its sensitivity, a novel cocrystal of BTNEN/HMX was successfully prepared and characterized. The cocrystal has a melting point of 155 °C which is lower than the melting point of HMX (275 °C) and higher than pure BTNEN (94 °C). The SEM images revealed that the cocrystal has got a plate morphology, which is different from its pure components. The shifts in the FT‐IR spectrum of the cocrystal in comparison to the pure substances prove the formation of intermolecular hydrogen bonding. Powder X‐ray diffraction (PXRD) spectra revealed that the cocrystal is different from the raw materials. In addition, impact sensitivity test confirmed that the sensitivity of BTNEN/HMX was effectively decreased in comparison to BTNEN. The density of the product was measured to be 1.93 g cm⁻³ and based on the density value, the detonation velocity and detonation pressure were calculated to be 9.38 km s ⁻¹ and 42.95 GPa, respectively.

中文翻译：

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新型爆炸性HMX / BTNEN（2：1）共晶的合成与表征

在高能材料领域，共结晶是改变现有高能材料性能的一种新策略。N，N-双（三硝基乙基）硝胺（BTNEN）是已知的高能材料，具有高灵敏度和爆炸性能。为了降低其灵敏度，成功制备并表征了新型BTNEN / HMX共晶体。共晶体的熔点为155°C，低于HMX（275°C）的熔点，高于纯BTNEN（94°C）。SEM图像表明，共晶具有板状形态，不同于其纯组分。与纯物质相比，共晶体的FT-IR光谱变化证明了分子间氢键的形成。粉末X射线衍射（PXRD）光谱表明，共晶与原料不同。另外，冲击敏感度测试证实，与BTNEN相比，BTNEN / HMX的敏感度有效降低。产物的密度经测量为1.93 g cm^-3并基于密度值，计算出爆轰速度和爆轰压力分别为9.38 km s  ^-1和42.95 GPa。