高Al含量PTFE基材料爆炸冲击压缩特性及反应行为

Impact Compression Characteristics and Reaction Behavior of High Al Content PTFE Based Materials Under Explosive Loading

摘要: 针对PTFE/Al含能材料在战斗部中的应用需求，研究其在爆炸冲击加载下的压缩特性及反应行为.利用炸药透镜产生平面波加载含能材料的方法，通过锰铜压阻传感器测量被加载的PTFE/Al （质量分数50%，50%）含能材料内的不同位置处压力-时间关系.根据测量数据，得到材料Hugoniot曲线、Murnagham等熵方程与Grüneisen状态方程.结果表明，PTFE/Al含能材料的冲击反应有延迟现象，反应延迟时间在1.0~2.6 <i<μ</i<s之间，爆炸冲击载荷引发材料反应的最小压力在11.93~17.98 GPa之间.

Abstract: Due to the need to apply PTFE/Al energetic materials in warhead, the compression characteristics and reaction of such materials under explosive impact loading were studied. The pressure time curves of PTFE/Al (mass fraction 50%, 50%) energetic materials were measured by manganin piezoresistive sensor. According to the measured data, Hugoniot curve, Murnagham isentropic equation and Grüneisen equation of state were obtained. The results show that the impact reaction of PTFE/Al energetic materials is delayed, the reaction delay time is between 1.0 <i<μ</i<s and 2.6 <i<μ</i<s, and the minimum pressure of material reaction induced by explosive impact load is between 11.93 GPa and 17.98 GPa.