A passive microreaction system with excellent mixing performance was used for the optimization of the size and shape of silver azide (SA) at the microscale. This safe and cost-effective method is characterized by high mixing efficiency, low reagent consumption, and rapid preparation. To exploit the difference, the preparation of SA at the microscale using the passive microreaction system was compared with that at the macroscale in a beaker. The results show that the preparation of SA using the passive microreaction system under microscale conditions has obvious advantages over its preparation in a beaker in terms of crystal morphology, particle size, particle size distribution and thermal stability. The shape of SA prepared in the system is spherical or spherical-like, while the morphology of SA synthesized in a beaker is mostly pyramidal with sharp points. The particle size of SA prepared in the microreaction system ranges from 712.4 nm to 1106.4 nm, while that of SA prepared in a beaker ranges from 255.0 nm to 825.0 nm. In addition, the detonation velocity of submicron-SA is 1850 m s⁻¹, which is 150 m s⁻¹ higher than that of confined SA published in the literature. This study demonstrates the feasibility of a safe and efficient method for fast preparation of SA with improved physical properties.

中文翻译：

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通过使用带有集成式静态微混合器的微反应系统进行快速混合来改善叠氮化银晶体的形貌和爆轰行为

具有优异混合性能的被动微反应系统用于在微观尺度上优化叠氮化银（SA）的尺寸和形状。这种安全且具有成本效益的方法的特点是混合效率高，试剂消耗低，制备迅速。为了利用这种差异，将使用被动微反应系统在微观尺度上制备的SA与在烧杯中宏观尺度下制备的SA进行了比较。结果表明，在微观条件下，使用被动微反应系统制备SA的晶体形态，粒度，粒度分布和热稳定性均优于在烧杯中制备SA。系统中制备的SA的形状为球形或类球形，而在烧杯中合成的SA的形态大多呈金字塔形，并具有尖锐的尖端。在微反应系统中制备的SA的粒径为712.4nm至1106.4nm，而在烧杯中制备的SA的粒径为255.0nm至825.0nm。此外，亚微米SA的爆炸速度为1850 ms^-1，比文献中公开的受限SA的高150 ms ^-1。这项研究证明了一种安全，有效的方法来快速制备具有改善的物理性能的SA的可行性。