Smart weapon systems are being miniaturised for widespread application in high-energy materials, necessitating the development of processable and printable high explosive (HEs) composites that can be detonated with a small critical diameter. This study presents an efficient strategy for fabricating HE composites with exceptional detonation performance. We developed an HE ink based on 1,3,5-trinitro-1,3,5-triazinane (RDX), consisting of a glycidyl azide polymer (GAP) as a binder and a metal–organic framework (MOF) as an additive. This ink was deposited on an aluminium plate using direct ink writing (DIW). The resulting RDX/MOF composite demonstrated a significantly lower critical diameter (∼720 μm) for detonation compared to a composite without the MOF. This reduction in critical diameter is attributed to the pores inside the MOFs, which enhanced the transfer of heat during detonation, creating an artificial hot-spot that sustained continuous explosion. The fabricated RDX/MOF composite offers a promising approach for developing miniaturized smart weapon systems with improved detonation characteristics.

中文翻译：

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含有金属有机框架的高爆炸性复合材料的直接墨水书写


智能武器系统正在小型化，以便在高能材料中得到广泛应用，因此需要开发可加工和可打印的高爆炸物 （HEs） 复合材料，这些复合材料可以用小临界直径引爆。本研究提出了一种制造具有卓越爆轰性能的 HE 复合材料的有效策略。我们开发了一种基于 1,3,5-三硝基-1,3,5-三嗪烷 （RDX） 的 HE 墨水，由作为粘合剂的缩水甘油叠氮化物聚合物 （GAP） 和作为添加剂的金属有机框架 （MOF） 组成。这种墨水使用直接墨水书写 （DIW） 沉积在铝板上。与没有 MOF 的复合材料相比，所得的 RDX/MOF 复合材料的爆震临界直径 （∼720 μm） 明显较低。临界直径的减小归因于 MOF 内部的孔隙，它增强了爆震过程中的热传递，从而产生了持续爆炸的人工热点。制备的 RDX/MOF 复合材料为开发具有改进引爆特性的小型化智能武器系统提供了一种很有前途的方法。