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为了研究黑索金(RDX)粒度对DAGR高能硝胺发射药抗冲击性能的影响规律,以DAGR药片为原料,分别加入用Tyler标准筛筛分的6种不同粒度的RDX,制备成相同RDX含量的试样,通过落锤冲击试验和摆锤冲击试验分别对所制备的发射药试样进行了轴向和径向抗冲击性能测试。研究结果表明,随着RDX粒度的减小,发射药试样的抗冲击性能逐渐增加。通过对试样冲击断面进行亚微观形貌观测,发现试样断裂面中固体填料RDX颗粒与粘结剂基体之间存在相互剥离的现象,断裂面上存在裸露的RDX颗粒及RDX与基体剥离所形成的空穴。
In order to study the influence of particle size of RDX on the impact resistance of DAGR high-energy nitramine propellants, DAGR tablets were used as the raw materials and six different-size RDX sieved by Tyler standard sieves were respectively added to make the same RDX content The axial and radial impact resistance tests of the prepared propellant samples were carried out by drop weight impact test and pendulum impact test, respectively. The results show that as RDX particle size decreases, the impact resistance of the propellant sample gradually increases. By observing the submicroscopic morphology of the impacted section of the specimen, it is found that there is a phenomenon of mutual debonding between the solid filler RDX particles and the binder matrix on the fracture surface of the specimen. Exposed RDX particles and RDX and matrix debonding The formation of holes.