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首页> 外文期刊>Journal of thermal analysis and calorimetry >Preparation and performances characterization of HNIW/NTO-based high-energetic low vulnerable polymer-bonded explosive
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Preparation and performances characterization of HNIW/NTO-based high-energetic low vulnerable polymer-bonded explosive

机译：HNIW / NTO高能量低弱势聚合物 - 粘结炸药的制备及性能表征

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摘要

To satisfy the energy and security requirements of the explosives, it is necessary to develop high-energetic low vulnerable explosive. As the representatives of high-energetic explosives and low vulnerable explosives, hexanitrohexaazaisowurtzitane (HNIW) and 3-nitro-1,2,4-triazole-5-one (NTO) are used to research high-energetic low vulnerable polymer-bonded explosive (PBX) in this study. Based on the formulation of PAX-11 (94 mass% HNIW, 2.4 mass% CAB, 3.6 mass% BDNPA/F), some HNIW is replaced by NTO to reduce the vulnerability of the PBX during this work. Solution-water suspension method was used to prepare a series PBXs with different formulations. The explosion probability method, differential scanning calorimeter and accelerating rate calorimeter are used to evaluate the hazards of different PBX molding powders. And the thermal vulnerabilities, mechanical properties and energy levels of PBX columns are assessed by slow cook-off tests, tensile strengthes and detonation velocities, respectively. Moreover, finite element numerical simulations are adopted to study the transient temperature distributions, ignition time and ignition locations of the PBX columns during slow cook-off. The investigated results show that when the mass fraction of HNIW and NTO is 50% and 44%, respectively, the PBX passes the slow cook-off test and the detonation velocity reaches 8685 m s(-1). To balance the energy and vulnerability of the PBXs, we obtain a high-energetic low vulnerable PBX formulation (50 mass% HNIW, 44 mass% NTO, 2.4 mass% CAB, 3.6 mass% BDNPA/F, 0.5 mass% additional graphite) which can be used in the warhead of the high-explosive anti-tank cartridge.
机译：为了满足爆炸物的能量和安全要求，有必要开发出高性能低弱势爆炸性。作为高能量炸药和低脆弱爆炸物的代表，六烷素河萨西罗妥丁烷（HNIW）和3-硝基-1,2,4-三唑-5-一（NTO）用于研究高性能低弱势聚合物 - 粘合炸药（ PBX）在这项研究中。基于PAX-11的配方（94质量％HNIW，2.4质量％驾驶室，3.6质量％BDNPA / F），一些HTO被NTO取代，以减少在这项工作期间PBX的脆弱性。溶液 - 水悬浮法用于制备具有不同配方的串联PBX。爆炸概率方法，差示扫描量热计和加速速率量热计用于评估不同PBX成型粉末的危害。通过缓慢的炊具，拉伸强度和爆轰速度来评估PBX柱的热漏电，机械性能和能量水平。此外，采用有限元数值模拟来研究缓慢炊具期间PBX列的瞬态温度分布，点火时间和点火位置。研究结果表明，当HNIW和NTO的质量分别分别为50％和44％时，PBX通过缓慢的炊具试验，并且爆炸速度达到8685 m S（-1）。为了平衡PBX的能量和脆弱性，我们获得高能量低弱势PBX制剂（50质量％HNIW，44质量％NTO，2.4质量％驾驶室，3.6质量％BDNPA / F，0.5质量％额外的石墨）可用于高爆炸罐墨盒的弹头。

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