Constructing Highly Reliable and Adaptive Primary Explosive Composites for Micro-Initiator Assisting by a Hybrid Template of Metal–Organic Frameworks and Cross-Linked Polymers,Small

当前位置： X-MOL 学术 › Small › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Constructing Highly Reliable and Adaptive Primary Explosive Composites for Micro-Initiator Assisting by a Hybrid Template of Metal–Organic Frameworks and Cross-Linked Polymers
Small ( IF 13.0 ) Pub Date : 2023-03-14 , DOI: 10.1002/smll.202300157
Zi-Xin Fang ₁ , Chao Wang ₁ , Yong-Li Wei ₁ , Qian-You Wang ₁ , Shuang-Quan Zang ₁

Affiliation

Primary explosive, as a reliable initiator for secondary explosives, is the central component of micro-initiators for modern aerospace systems and military operations. However, they are typically prepared as powders, posing potential safety risks because of the inevitable particles scattering issues in the actual working environments. Here, the fabrication of a highly adaptive bulk material of copper azide (CA)-based safe primary explosive for micro-initiators is demonstrated. This bulk material, as derived by a complete azidation reaction of the carbonized metal–organic framework/cross-linked polymer hybrid template, enables the firm embedding of active CA species in a cross-linked carbon network (denoted as CA-C). Interestingly, this CA-C bulk material demonstrates multifarious mechanical stabilities (e.g., good shock and vibration resistance, and anti-overload capacity) in the simulated working conditions. Meanwhile, the CA contents in the CA-C bulk material reached as high as 70.3%, ensuring its detonation power. As a proof of concept, CA-C bulk material assembling in a micro-detonator can efficiently detonate the secondary explosive of CL-20 under laser irradiation. This work hereby advances the fabrication of safe and powerful primary explosives for the fulfillment of safe micro-initiator in a broad range of applications in aerospace systems.

中文翻译：

通过金属-有机骨架和交联聚合物的混合模板构建用于微引发剂辅助的高度可靠和适应性起爆复合材料

起爆药作为二次炸药的可靠起爆剂，是现代航空航天系统和军事行动中微起爆剂的核心组成部分。然而，它们通常被制备成粉末，由于在实际工作环境中不可避免的颗粒散射问题而存在潜在的安全风险。在这里，演示了用于微引发剂的基于叠氮化铜 (CA) 的安全初级炸药的高度适应性散装材料的制造。这种由碳化金属-有机骨架/交联聚合物杂化模板的完全叠氮化反应衍生而来的散装材料，能够将活性 CA 物质牢固地嵌入交联碳网络（表示为 CA-C）中。有趣的是，这种 CA-C 散装材料表现出多种机械稳定性（例如，良好的抗冲击和抗振性，和抗过载能力）在模拟工作条件下。同时，CA-C散料中的CA含量高达70.3%，保证了其起爆威力。作为概念证明，组装在微型雷管中的 CA-C 散装材料可以在激光照射下有效地引爆 CL-20 二次炸药。因此，这项工作推进了安全和强大的初级炸药的制造，以实现在航空航天系统广泛应用中的安全微引发剂。

更新日期：2023-03-14

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南