Nano-fillers have attracted a large amount of attention in enhancing the mechanical properties of polymer bonded explosive (PBX), due to the strong interfacial interactions. However, the addition of inert components reduces the energy output and makes the processing, recycling and re-utilization of energetic composites quite unfavorable. To improve the mechanical properties while maintaining detonation performance, a novel self-reinforced PBX was constructed with very low content of nano-1,3,5-triamino-2,4,6-trinitrobenzene (TATB) served as modifiers. The incorporation of nano-TATB particles into PBX evidently increased the storage modulus, strength, and toughness. The enhanced mechanism could be ascribed to the nano effect of nanoparticles and “interlocking block” formed on the rough surface of nano-TATB, which provided stronger interfacial interaction. This work demonstrates the successful application of nano-energetic crystals to self-reinforce PBXs, thereby opening up new perspectives in structure design and modification of mechanical properties for energetic composites without changing the intrinsic components of energetic composites.

由于强的界面相互作用，纳米填料在增强聚合物键合炸药（PBX）的机械性能方面引起了广泛关注。然而，惰性组分的加入降低了能量输出，使得含能复合材料的加工、回收和再利用非常不利。为了在保持爆轰性能的同时提高机械性能，构建了一种新型自增强 PBX，其中含有非常低的纳米 1,3,5-三氨基-2,4,6-三硝基苯 (TATB) 作为改性剂。将纳米 TATB 颗粒掺入 PBX 明显增加了储能模量、强度和韧性。增强机制可归因于纳米粒子的纳米效应和在纳米TATB粗糙表面形成的“互锁块”，这提供了更强的界面相互作用。这项工作证明了纳米高能晶体在自增强 PBX 中的成功应用，从而在不改变高能复合材料固有成分的情况下，为高能复合材料的结构设计和机械性能改性开辟了新的视角。