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首页> 外文会议>International symposium on ballistics >THIN FLYER IMPACT INITIATION THRESHOLD COMPARISON OF HNS-IV, CL-20, CL-20/HMX CO-CRYSTAL IN SLAPPER DETONATOR
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THIN FLYER IMPACT INITIATION THRESHOLD COMPARISON OF HNS-IV, CL-20, CL-20/HMX CO-CRYSTAL IN SLAPPER DETONATOR

机译：HNS-IV，CL-20，CL-20 / HMX共晶中的薄蝇冲击启动阈值比较拍摄雷管中的CL-20 / HMX共晶

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Slapper detonator consists of exploding metal foil, thin polyimide flyer, spacer (barrel) and high density explosive pellet. When high electrical energy applied in short duration, the metal foil explodes, to accelerate thin polyimide flyer to a velocity of 2-3 km/s. The impact of flyer on explosive pellet leads to prompt initiation by shock-to-detonation phenomenon. HNS-IV explosive is widely used in this application as it is highly insensitive and thermally stable with small critical diameter. However, the HNS-IV explosive has limitations of batch-to-batch variation, low velocity of detonation (VoD) (～7200 m/s) and low CJ pressure (20 GPa). Recently, CL-20 explosive has emerged as one of the potential high energy material for application in slapper detonator. CL-20 has high VoD (～9400 m/s) and CJ pressure (～48.2 GPa) and can be used in miniaturization of futuristic explosive devices. In this research work, HNS-IV, CL-20 and CL-20/HMX co-crystals were processed using novel technique of nozzle based solvent-antisolvent method. The processed explosives were characterized for particle size, shape and morphology. Experimental prototypes of slapper detonators were fabricated with same configuration of flyer, barrel diameter and exploding foil dimensions to evaluate and compare the performance. The threshold trials were carried out using Bruceton test. Comparative results of explosive characterization and threshold initiation voltage of the three explosives is presented. The particle size of all the three explosives is in the range of 0.5 to 9 μm and the threshold initiation voltages for HNS-IV, CL-20 and CL-20/HMX co-crystals are in the range of 1.75 kV, 0.9 kV and 1.5 kV respectively with standard deviation of +0.1 kV. It is observed that CL-20 has lowest threshold initiation voltage; however, it is more impact and friction sensitive. The sensitivity properties of CL-20 can be tailored by making co-crystals with HMX. This enables to get insensitive and more powerful slapper initiators with advantage of miniaturization, as CL-20/HMX co-crystal has sensitivity and thermal properties near to HMX and better than CL-20.
机译：扣篮雷管包括爆炸金属箔，薄的聚酰亚胺传单，垫片（桶）和高密度爆炸颗粒。当短持续时间施加的高电能时，金属箔爆炸，将薄的聚酰亚胺飞行器加速到2-3 km / s的速度。传单对爆炸颗粒的影响导致通过冲击爆炸现象迅速启动。 HNS-IV炸药广泛用于本申请中，因为它具有小的临界直径非常不敏感和热稳定。然而，HNS-IV炸药具有间歇批次变化，爆炸速度低（VOD）（〜7200m / s）和低CJ压力（20GPa）的限制。最近，CL-20爆炸性被出现为潜在的高能量材料之一，用于在射线雷击器中应用。 CL-20具有高VOD（〜9400米/秒）和CJ压力（约48.2GPa），可用于未来派爆炸装置的小型化。在该研究工作中，使用新颖的基于喷嘴的溶剂 - 抗溶剂方法处理HNS-IV，CL-20和Cl-20 / HMX共晶。处理后的炸药的特征在于粒度，形状和形态。 Slapper Detonator的实验原型采用相同的传单，筒直径和爆炸箔尺寸制造，以评估和比较性能。使用Bruceton试验进行阈值试验。提出了三种炸药爆炸性表征和阈值启动电压的对比结果。所有三种炸药的粒径在0.5至9μm的范围内，HNS-IV，CL-20和CL-20 / HMX共晶的阈值发起电压为1.75kV，0.9kV和1.5 kV分别具有标准偏差+0.1 kV。观察到CL-20具有最低阈值发起电压;然而，它是更大的影响和摩擦敏感。 CL-20的敏感性可以通过用HMX制备晶体来定制。这使得能够具有小型化的不敏感和更强大的拍摄引发剂，因为Cl-20 / HMX Co晶体具有靠近HMX的敏感性和热性能，并且优于CL-20。

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