Graphene and its composites are promising catalysts for energetic materials. In order to realize the application of graphene in solid propellant, the effects of graphene content on the ignition, combustion and agglomeration characteristics of composite propellant were thoroughly conducted based on thermogravimetric-differential scanning calorimetry measurements (TG-DSC), laser ignition, combustion diagnoses, burning rate test and condensed combustion products collection. Results show that graphene effectively promotes the thermal decomposition of AP. 3 wt.% graphene advances the thermal decomposition temperature of AP by 68.3 ° C, and 1 wt.% graphene increases the apparent decomposition heat of AP by 2.6 times. Laser ignition experiments show that the combustion intensity and mass burning rate increase, while the ignition delay time decreases with increasing graphene content. The addition of graphene is found to increase the burning rate at 0.1 MPa, but the effect is not obvious at 1-7 MPa, thus reducing the pressure exponent. 0.5 wt.% graphene can reduce the pressure exponent from 0.43 to 0.34. Compared with the baseline propellant, more aluminum particles are ignited on the surface of the propellant containing graphene and the large size agglomerates in the condensed combustion products decrease significantly. Overall, graphene plays a comprehensive effect on the ignition, combustion and agglomeration characteristics of aluminized propellant. Results of this study can help guide the application and development of graphene or graphene-inclusion materials in solid propellant for solid rocket motors.

石墨烯及其复合材料是有前途的含能材料催化剂。为实现石墨烯在固体推进剂中的应用，基于热重-差示扫描量热法（TG-DSC）、激光点火、燃烧诊断，深入研究了石墨烯含量对复合推进剂点火、燃烧和团聚特性的影响。 、燃烧率测试和冷凝燃烧产物收集。结果表明石墨烯有效地促进了AP的热分解。3 wt.% 石墨烯使 AP 的热分解温度提高 68.3 ° C, 和 1 wt.% 石墨烯使 AP 的表观分解热增加 2.6 倍。激光点火实验表明，随着石墨烯含量的增加，燃烧强度和质量燃烧速率增加，而点火延迟时间减小。发现石墨烯的加入在0.1 MPa时提高了燃烧速率，但在1-7 MPa时效果不明显，从而降低了压力指数。0.5 wt.% 石墨烯可以将压力指数从 0.43 降低到 0.34。与基线推进剂相比，含有石墨烯的推进剂表面点燃了更多的铝颗粒，凝聚燃烧产物中的大尺寸团聚体显着减少。总体而言，石墨烯对镀铝推进剂的着火、燃烧和团聚特性具有综合影响。