超细高氯酸铵(AP)微观结构对机械感度的影响

The Effect of Microstructure of Ultrafine Ammonium Perchorate(AP) on its Mechanical Sensitivity

采用机械研磨法细化高氯酸铵(AP),采用扫描电镜(SEM)、X射线衍射(XRD)、撞击和摩擦感度试验方法研究不同状态AP粒子的微观结构和机械感度。结果表明:超细AP样品的机械感度受到多种微纳结构因素的共同影响,多种因素差异使超细AP样品的撞击感度和摩擦感度表现出与某单个因素间不存在必然联系,各因素对撞击感度和摩擦感度的影响程度不同也使各超细AP样品的撞击感度和摩擦感度表现出不一致的顺序;并用热点理论分析了超细AP微观结构对机械感度的影响。

Explosive microstructures have an important effect on explosives＇ performance, in order to understand the effect of ammonium perchorate（AP） microstructure on its mechanical sensitivity, physical milling method was used to prepare ultrafine AP particles, scanning electric microscopy（SEM）, X-ray diffraction（XRD）, impact sensitivity and friction sensitivity experimental method were used to characterize the microstructures and mechanical sensitivity of different state AP particles. The results show that they are much different in the pority, particles shape and size, crystal regular degree and crystal size of different state ultrafine AP samples, the mechanical sensitivity of ultrafine AP samples is co-affected by many rnicrostructure factors, the differences of multi-factors cause ultrafine AP samples don＇t exist inevitable relation between the impact sensitivity, friction sensitivity and certain factor.The effects degree of different factors on impact sensitivity and friction sensitivity are also different, so the order of impact sensitivity and friction sensitivity is inconsistent. The effect of ultrafine AP microstructure on its mechanical sensitivity is also analyzed by hot-spots theory.