Copper azide (CA), a high energy primary explosive, had been investigated with various supporter materials to reduce its sensitivity characteristics. However, effective supporter had not been designed to fully reduce CAs sensitivity characteristics. Hence, we presented a three-dimensional (3D) graphene aerogel-supported CA (CA-GAs) strategy to meet those needs. CA-GAs was prepared using 3D GA as the framework to uniformly grip CA. The SEM and XRD measurements revealed that CA nanoparticles were fully dispersed on GAs, the in-situ azidation reaction of Cu precursor and CAs crystalline structure were not affected by GAs. DSC further verified the thermal stability of CA-GAs. Moreover, electrostatic ignition experiment was employed to investigate CA-GAs’ ignition time, input energy, and electrical ignition performance. Those results showed that CA-GAs could be reliably detonated by a 3.5 Ω SCB, the average electric ignition voltage, ignition time, and input energy of CA-GAs were 19.125 V, 21 μs, and 0.56 mJ, respectively. All these results illustrated that GAs was an effective supporter for the stabilization of CA.

中文翻译：

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3D 石墨烯气凝胶负载的叠氮化铜纳米粒子作为初级炸药具有出色的起爆性能

叠氮化铜 (CA) 是一种高能起爆药，已与各种支持材料一起研究以降低其敏感性特性。然而，有效的支持者并未被设计为完全降低 CA 的敏感性特征。因此，我们提出了一种三维 (3D) 石墨烯气凝胶支持的 CA (CA-GAs) 策略来满足这些需求。CA-GAs 是使用 3D GA 作为框架以均匀地抓住 CA 来制备的。SEM 和 XRD 测量表明，CA 纳米粒子完全分散在 GAs 上，原位Cu前体的叠氮化反应和CAs晶体结构不受GAs的影响。DSC 进一步验证了 CA-GAs 的热稳定性。此外，采用静电点火实验研究了CA-GAs的点火时间、输入能量和电点火性能。这些结果表明，CA-GAs 可以通过 3.5ΩSCB，CA-GAs的平均电点火电压、点火时间和输入能量为19.125 V，21μs 和 0.56 mJ，分别。所有这些结果表明，GAs 是稳定 CA 的有效支持者。