PBX炸药的导热系数偏低，在面临复杂的热物理环境时容易产生热应力，导致部件开裂或塌陷，直接影响武器的安全性能和使用性能，提高导热系数是增强PBX环境适应能力的关键途径。目前，国内外关于增强PBX导热性能的研究比较空白，PBX结构的特殊性使得该项研究面临巨大挑战。本项目拟在PBX中呈网络分布的粘结剂中构建高效导热通路，基于高导热碳纳米管、石墨烯填充，采用复合包覆的方法在炸药表面构筑纤维状导热微层与片状导热微层交替排列的空间结构，实现炸药到粘结剂的热量以“线-片”方式和粘结剂中的热量以“并联”模式高效传输，调控层结构来研究其对PBX导热性能的影响，深入理解层结构变化对导热传输影响的规律和机理。通过本项目的研究必将在结构设计角度上深刻认识PBX的导热机制，为提高PBX导热性能提供新的思路和理念，将为延长武器的生存寿命提供帮助和参考。

The thermal stress can easily emerge in the PBX with a low thermal conductivity when faced with the complicated thermal physical environment, resulting in cracking or fracture of PBX. This phenomenon can directly affect the safety and usage of weapon. And improving the thermal conductivity is a key route to enhance the thermal environment adaptability of PBX. At present, the research on improving the thermal conductivity of PBX is very rare, and the special structure of PBX make this work face a big challenge. Accordingly, in this work, a high efficient thermal conduction path will be builded in the polymer binder network of PBX. Based on the filling of carbon nanotubes and graphene, the alternating micro-layered structure consisting of fibrous thermal conduction layer and flake thermal conduction layer will be constructed at the surface of explosive. Then the heat will transfer from explosive to binder in a manner of “line-pallet” mode, while the heat in binder will transfer in a manner of “parallel” mode. The effect of layered structure regulating on the thermal conduction property of PBX will be investigated, moreover, the rule and mechanism of thermal conduction with the changing of layered structure will be deeply studied. We hope the studies in the project can give a boost to insight into thermal conduction mechanism of PBX at the structure design scale, provide new means and ideas for improving the thermal conduction property of PBX, and offer assist and reference for extending the living life of weapon.