典型电雷管的聚四氟乙烯抗过载加固方法

为了提高弹药侵彻目标时火工品的抗过载冲击能力,采用在雷管底部和外壁衬垫一定厚度聚四氟乙烯材料的方法减缓冲击应力波和惯性过载的强度。以制式桥丝式独角电雷管为加固对象。采用空气炮实验和数值模拟研究了这一加固方法的机理和有效性。实验与模拟结果表明,衬垫缓冲层隔离了冲击应力波和缓冲了雷管质量惯性。随着衬垫厚度增加,雷管承受的过载加速度和受到的过载损伤逐渐减小。当缓冲层厚度大于0.9 mm时,雷管无显著损伤发生。聚四氟乙烯材料的加入对雷管有明显的保护作用。

Reinforcement Method of Typical Electric Detonator with PTFE under High Overloading

To improve the anti-overloading ability of initiating explosive device under ammunition penetration target, polytetrafluoroethylene (PTFE) materials with varied thickness were added at the bottom or the outer wall of detonators to weaken the impact stress wave and the strength of inertial overload. The standard one-leg bridge-wire electric detonators were used as strengthening object. The mechanism and effectiveness of this reinforcement method were studied by gas gun experiment and numerical simulation. Experiment and the simulation results show that the buffer layer isolates the impact stress wave and cushions the mass inertia of the detonators. With the increase of gasket thickness, the overload acceleration and overload damage of detonator decrease gradually. When the buffer layer thickness is greater than 0.9 mm, the detonator has no obvious damage. The addition of PTFE materials on the detonator has an obvious protective function.