Constructing a graphene-like structure to lower friction sensitivity: Ag(I) complexes based on furan-2,5-dicarbohydrazide,New Journal of Chemistry

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Constructing a graphene-like structure to lower friction sensitivity: Ag(I) complexes based on furan-2,5-dicarbohydrazide
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2023-09-13 , DOI: 10.1039/d3nj02775a
Chao Zhang ₁ , Ting-wei Wang ₁ , Zu-jia Lu ₁ , Zhen-xin Yi ₂ , Bao-long Kuang ₁ , Zhi-ming Xie ₁ , Yan Li ₂ , Jian-guo Zhang ₁

Affiliation

In the field of energetic materials, high sensitivity has always been one of the obstacles restricting the practical application of energetic materials. In order to meet the practical application requirements, there are various methods to lower sensitivity, among which doping multilayer graphene is one of the important methods to reduce the friction sensitivity of energetic compounds in recent years. A multilayer graphene structure has the obvious characteristics of a weak interaction between layers and a strong interaction between atoms in layers. This special structure makes it slip between layers when it encounters friction, thus reducing the heat conduction efficiency and hindering the generation of hot spots, and finally shows the effect of lowering friction sensitivity on a macro level. Inspired by this mechanism, we designed and synthesized a ligand furan-2,5-dicarbohydrazide (FDCA) and its Ag(I)-based metal complex ([Ag(FDCA)ClO₄]_n, ECP-1) with a graphene-like structure. The structure of the product was confirmed using single-crystal X-ray diffraction, infrared spectroscopy and elemental analysis. ECP-1 exhibits excellent explosion performance and initiation ability, but also shows a low friction sensitivity (FS = 84 N), which is in sharp contrast with a sensitive impact sensitivity (IS = 4 J). The simple preparation method and unique structure enrich research on lowering the mechanical sensitivity of primary explosives.

中文翻译：

构建类石墨烯结构以降低摩擦敏感性：基于呋喃-2,5-二碳酰肼的Ag(I)配合物

在含能材料领域，高灵敏度一直是制约含能材料实际应用的障碍之一。为了满足实际应用要求，降低灵敏度的方法有多种，其中掺杂多层石墨烯是近年来降低含能化合物摩擦灵敏度的重要方法之一。多层石墨烯结构具有层间弱相互作用、层内原子间强相互作用的明显特征。这种特殊的结构使其在遇到摩擦时在层间滑动，从而降低热传导效率并阻碍热点的产生，最终在宏观层面上显示出降低摩擦敏感性的效果。受到这个机制的启发，FDCA）及其具有类石墨烯结构的Ag( I )基金属络合物（[Ag(FDCA)ClO ₄ ] _n，ECP-1 ）。通过单晶X射线衍射、红外光谱和元素分析确认了产物的结构。ECP-1表现出优异的爆炸性能和起爆能力，但也表现出较低的摩擦敏感性（FS = 84 N），这与敏感的冲击敏感性（IS = 4 J）形成鲜明对比。简单的制备方法和独特的结构丰富了降低起爆药机械感度的研究。

更新日期：2023-09-14

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