高格尼能钝感浇注PBX设计及性能

通过系列浇注高聚物粘结炸药(PBX)的爆轰性能,拟合得到爆速与HMX含量的线性关系,研究了HMX颗粒特性及钝感剂含量对混合炸药机械感度的影响。结果表明,采用高品质HMX和3%的钝感剂时,混合炸药的安全性最好。在此基础上设计制备了一种组成及性能与B2273A(HMX/丁羟粘结剂90/10)接近的HMX基高固相浇注PBX炸药GO-1(HMX/丁羟粘结剂90/10)。其摩擦感度和撞击感度分别为5%和0,冲击波感度I50为17.7 mm,爆速为8587 m·s-1,格尼系数为2.80,爆轰性能、金属加速能力和安全性能优良,该炸药在枪击试验、烤燃试验中均为燃烧的低反应等级。

Design and Performance of an Insensitive Cast PBX with High Gurney Energy

Based on the detonation velocities of a series of cast polymer bonded explosive(PBX) formulations, a linear relationship was obtained by fitting the data between detonation velocity and HMX content. Both the influence of HMX particle property and the composite deterrent content on the mechanical sensitivity were investigated. Using high quality HMX as major explosive, the safety of composite explosives was the best when adding 3% composite deterrent. Then a new HMX based cast PBX explosive GO-1 with high solid loading content was designed, and its friction sensivity, impact sensivity, shock-wave sensivity, detonation velocity and Gurney coefficient were 5%, 0, 17.7 mm, 8587 m·s^-1 and 2.80, respectively, which showed perfect on safety, detonation velocity and ability for accelerating metal. And in the low vulnerability examination including bullet impact test, slow cook-off and fast cook-off test, all the reaction grade were combustion. So the new explosive has wide application foreground in fragment and EFP warhead.