Insensitive high explosive 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) and TATB-based formulations are widely used in civil and defense applications. However, it undergoes high deformation on exposure to heat and large external force, which leads to fatal defects, limiting its application in modern weapons. Inspired by mussels, polydopamine (PDA) was selected for coating TATB through a one-step in-situ polymerization process. The kinetics of the PDA film coating onto TATB particles depended on the experimental parameters. The increase in the initial concentration of dopamine solution and reaction temperature facilitated PDA polymerization and deposition. The accelerated deposition kinetics could be observed by altering the reaction air atmosphere to an oxygen atmosphere. Therefore, the content of the PDA shell could be controlled by adjusting the reaction conditions. Structural characterizations confirmed the formation of core-shell composites with a uniform and compact shell layer. Study of the kinetics of dopamine deposition on explosive surfaces provides a potential method of controllable surface modification of energetic materials with functional group layers.

不敏感的高爆炸性1,3,5-三氨基-2,4,6-三硝基苯（TATB）和基于TATB的配方广泛用于民用和国防应用。但是，它在暴露于热和大的外力时会发生很大的变形，这会导致致命的缺陷，从而限制了其在现代武器中的应用。在贻贝的启发下，选择聚多巴胺（PDA）通过一步原位涂覆TATB聚合过程。PDA膜涂布在TATB颗粒上的动力学取决于实验参数。多巴胺溶液的初始浓度和反应温度的增加促进了PDA的聚合和沉积。通过将反应空气气氛改变为氧气气氛，可以观察到加速的沉积动力学。因此，可以通过调节反应条件来控制PDA壳的含量。结构表征证实了具有均匀且致密壳层的核-壳复合材料的形成。研究多巴胺在爆炸表面上沉积的动力学提供了一种潜在的方法，可控制具有官能团层的高能材料的表面改性。