Energetic Materials Frontiers最新文献_第4页

Application of inkjet printing using micro-nano CL-20-based PVA colloidal suspension with desensitization to MEMS-based pyrotechnics 微纳CL-20基PVA胶体悬浮液对MEMS烟火减敏喷墨打印的应用

IF 3.3

Energetic Materials Frontiers Pub Date : 2024-09-01 DOI: 10.1016/j.enmf.2023.06.004

{"title":"Application of inkjet printing using micro-nano CL-20-based PVA colloidal suspension with desensitization to MEMS-based pyrotechnics","authors":"","doi":"10.1016/j.enmf.2023.06.004","DOIUrl":"10.1016/j.enmf.2023.06.004","url":null,"abstract":"<div><div>The micro-scale detonation sequence prepared by the inkjet printing using all-liquid 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazawurtzitan (CL-20)-based energetic inks enables the micro-space fine-scale assembly and stable propagation of detonation. However, the easy crystallization and high mechanical sensitivity of all-liquid CL-20 limit its applications to the microelectromechanical system (MEMS)-based pyrotechnics. This study developed a simple micro-nano CL-20-based polyvinyl alcohol (PVA) colloidal suspension suitable for inkjet printing to control the crystal structures and mechanical sensitivities of energetic composites. The results show that the CL-20-based multilayer films formed by inkjet printing had dense microstructures, with the porosity decreasing to 13.81% and ε-type crystals. Compared with micro-nano CL-20 particles, the impact and friction sensitivities of CL-20-based multilayer films were reduced by 100% and 122%, respectively, and their apparent activation energy increased by 44.7 kJ mol−1, thus effectively improving the safety performance of micro-nano structured explosive agents. Therefore, CL-20-based multilayer films have great potential for application to the micro-scale detonation sequence of MEMS.</div></div>","PeriodicalId":34595,"journal":{"name":"Energetic Materials Frontiers","volume":"5 3","pages":"Pages 199-207"},"PeriodicalIF":3.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43058995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A new sulfur-containing laser-sensitive primary explosive based on thiazole-4-carbohydrazide 基于噻唑-4-甲酰肼的新型含硫激光敏感原爆物

IF 3.3

Energetic Materials Frontiers Pub Date : 2024-09-01 DOI: 10.1016/j.enmf.2024.02.005

{"title":"A new sulfur-containing laser-sensitive primary explosive based on thiazole-4-carbohydrazide","authors":"","doi":"10.1016/j.enmf.2024.02.005","DOIUrl":"10.1016/j.enmf.2024.02.005","url":null,"abstract":"<div><div>This study effectively synthesized thiazole-4-carbohydrazide (SZCA) and its ionic salt SZCA·HClO4 and energetic complex Cu(SZCA)2(ClO4)2 (ECC-1). The new compound SZCA, SZCA·HClO4 and ECC-1 were fully characterized through elemental analysis, infrared spectroscopy, 13C NMR spectroscopy and thermal stability analysis. The combustion heat of ECC-1 was measured by oxygen bomb calorimetry, and its detonation performance was predicted by Kamlet-Jacobs formula and EXPLO5, respectively. The mechanical sensitivity of ECC-1 was tested using BAM method. In particular, we comprehensively evaluated the initiation ability of ECC-1 through lead plate destruction experiment and laser initiation experiment. The results show that ECC-1 have a decomposition temperature of 236 °C, exhibits acceptable mechanical sensitivity (impact sensitivity: 3.4 J, friction sensitivity: 4 N), and decent detonation properties (D: 6.6 km s−1, P: 21.3 GPa). And ECC-1 could be initiated by a single-pulse laser (λ: 808 nm, P: 20 W, t: 3 ms), and successfully detonated the next charge, such as RDX and CL-20.</div></div>","PeriodicalId":34595,"journal":{"name":"Energetic Materials Frontiers","volume":"5 3","pages":"Pages 191-198"},"PeriodicalIF":3.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139886297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Dual control over the reignition and combustion performance of hydroxylammonium nitrate-based gel propellants 对硝酸羟铵基凝胶推进剂的复燃和燃烧性能进行双重控制

IF 3.3

Energetic Materials Frontiers Pub Date : 2024-09-01 DOI: 10.1016/j.enmf.2024.03.005

{"title":"Dual control over the reignition and combustion performance of hydroxylammonium nitrate-based gel propellants","authors":"","doi":"10.1016/j.enmf.2024.03.005","DOIUrl":"10.1016/j.enmf.2024.03.005","url":null,"abstract":"<div><div>Hydroxylammonium nitrate (HAN; NH3OH + NO3−), a green and non-toxic monopropellant, finds wide application in liquid and controllable solid propulsion. Gel propulsion enjoys advantages such as a high throttling capacity and encouraging operational safety. This study prepared three HAN-based gel propellant samples with gelling agent contents ranging from 2 to 4 wt%. Their decomposition processes were analyzed using thermogravimetry (TG), differential scanning calorimetry (DSC), and mass spectrometry (MS), and a microthruster was designed to investigate their combustion characteristics under varying voltages and flow rates. Results reveal the presence of three exothermic peaks in the HAN-based gel propellants at temperatures of 204, 306 °C and 441 °C. The gel propellants experienced violent decomposition between 100 °C and 400 °C, producing low-molecular-weight organics such as C3H8, C2H6, H2O, O2, and NH3. For the initial ignition, the flow rate exerts a greater effect of reducing the delay time than the voltage. The reignition exhibited a shorter delay time than the initial ignition, and increasing voltage led to a more significant decrease in the reignition delay time than increasing the flow rate. Under a gelling agent content of approximately 4 wt%, the reignition delay time decreased from 2.35 s to 0.65 s as the voltage increased from 150 V to 250 V, with the flame length and light intensity during the reignition greater than those in the initial ignition. At the end of combustion, the extinguishment delay time changed insignificantly under high voltage. As revealed by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analyses, residues with numerous cavities emerged due to incomplete combustion and the severe agglomeration of the gel propellants, exhibiting a maximum chlorine content of up to 77.73%.</div></div>","PeriodicalId":34595,"journal":{"name":"Energetic Materials Frontiers","volume":"5 3","pages":"Pages 239-247"},"PeriodicalIF":3.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140398993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tensors of thermal deformation for various polymorphic modifications of 2,4-dinitroanisole 2,4-二硝基苯甲醚各种多晶型修饰的热变形张量

IF 3.3

Energetic Materials Frontiers Pub Date : 2024-09-01 DOI: 10.1016/j.enmf.2024.02.002

{"title":"Tensors of thermal deformation for various polymorphic modifications of 2,4-dinitroanisole","authors":"","doi":"10.1016/j.enmf.2024.02.002","DOIUrl":"10.1016/j.enmf.2024.02.002","url":null,"abstract":"<div><div>The anisotropic characteristics of thermal deformation of ultrapure 2,4-dinitroanisole (2,4-DNAN) crystals were determined by the methods of powder thermorentgenography of the internal standard. The points of structural changes are registered in increments of 10 K, and in the melting region of 2 and 1 K. Calculations of powder X-ray diffraction data are performed by methods of full-profile analysis with a cycle of quantum modeling of the structure of molecules integrated into the algorithm. The Pauli, Le Bail (WPPD), Rietveld (WPPF) and WPPM methods were used as reference methods for full-profile analysis. The main crystallographic axes and characteristic surfaces of the thermal deformation tensor α and β-2,4-DNAN are determined. At atmospheric pressure, the main coefficients of linear (α) and volumetric (β) thermal deformation (expansion) were at 293 K for α-2,4-DNAN with α1(293) = 11,516 × 10−5 K−1, α2(293) = −0,120 × 10−5 K−1, α3(293) = 5,098 × 10−5 K−1, β(293) = 16,333 × 10−5 K−1; at 293 K for β-2,4-DNAN with α1(293) = 13,217 × 10−5 K−1, α2(293) = 0,494 × 10−5 K−1, α3(293) = −8,6504 × 10−5 K−1, β(293) = 6,8191 × 10−5 K−1; at 260 K for β′-2,4-DNAN with α1(260) = 25,214 × 10−5 K−1, α2(260) = −5,823 × 10−5 K−1, α3(260) = 7,741 × 10−5 K−1, β(260) = 27,112 × 10−5 K−1.</div></div>","PeriodicalId":34595,"journal":{"name":"Energetic Materials Frontiers","volume":"5 3","pages":"Pages 257-266"},"PeriodicalIF":3.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139770721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Features of the mechanism of pasty propellants burning 糊状推进剂燃烧机理的特点

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Energetic Materials Frontiers Pub Date : 2024-09-01 DOI: 10.1016/j.enmf.2023.10.002

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Construction and combustion behavior of horizontal two-dimension combustion networks of boron-metal oxides 硼金属氧化物水平二维燃烧网络的构建和燃烧行为

IF 3.3

Energetic Materials Frontiers Pub Date : 2024-09-01 DOI: 10.1016/j.enmf.2024.08.005

Hao-yu Song, Chen-yang Li, Fu-bing Gao, Chong-wei An, Shi-jiao Li, Xuan Zhan

{"title":"Construction and combustion behavior of horizontal two-dimension combustion networks of boron-metal oxides","authors":"Hao-yu Song, Chen-yang Li, Fu-bing Gao, Chong-wei An, Shi-jiao Li, Xuan Zhan","doi":"10.1016/j.enmf.2024.08.005","DOIUrl":"10.1016/j.enmf.2024.08.005","url":null,"abstract":"<div><div>In order to break through the top-down combustion mode brought by the traditional pillars, it is explored to explore the exploration of delay composition array construction in two-dimensional dimensions. In this study, B-CuO, B-Bi2O3, B-Fe2O3 sticks and combustion networks with good forming properties were prepared with the help of a micro-pen direct ink writing device by dispersing the above materials in DMF with boron and metal oxides as the main body of the charge and F2602 as the binder. The sticks were thermally ignited using a nichrome wire, and the flame propagation behaviors of the sticks with different formulations, spacings and heights were tracked with a high-speed camera, and a series of combustion networks were designed on the premise of not leaping into flames. Results show that the B-CuO stick has the fastest ignition speed level (19.71–29.02 mm ·s−1) at equivalence ratios of 1.0–4.0, followed by B-Bi2O3 (5.99–16.01 mm ·s−1) and B-Fe2O3 is the slowest (1.91–4.94 mm ·s−1). The sticks burned best at an equivalence ratio of 1.0–1.5. A variety of combustion networks were constructed on 50 × 50 mm glass slides by selecting B-CuO, B-Bi2O3, and B-Fe2O3 at the equivalence ratios of 1.0, 1.5, and 1.5, respectively, among which B-CuO had the shortest combustion time (5.17 s), the shortest total combustion network length (252 mm), and 400 mm network could be realized for B-Bi2O3. Construction and 19.85 s, and B-Fe2O3 can realize 608 mm network length and 130.7 s combustion time. Through these studies, the two-dimensional combustion network construction of boron-metal oxides was realized, which provides a new idea for the delay action in small size.</div></div>","PeriodicalId":34595,"journal":{"name":"Energetic Materials Frontiers","volume":"5 3","pages":"Pages 216-223"},"PeriodicalIF":3.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Cover Story 封面故事

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Energetic Materials Frontiers Pub Date : 2024-09-01 DOI: 10.1016/S2666-6472(24)00073-3

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Graphical Abstract 图表摘要

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Energetic Materials Frontiers Pub Date : 2024-09-01 DOI: 10.1016/S2666-6472(24)00074-5

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Design and performance of a micro-scale detonation train with a built-in pyrotechnic MEMS-based safety and arming device 一种内置烟火mems安全防护装置的微尺度爆轰列车的设计与性能

IF 3.3

Energetic Materials Frontiers Pub Date : 2024-09-01 DOI: 10.1016/j.enmf.2023.07.001

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Nitrogen-rich skeleton reassembled ECOFs as energetic materials with low sensitivities and good corrosion resistance 富氮骨架重新组装 ECOF，使其成为具有低敏感性和良好耐腐蚀性的高能材料

Energetic Materials Frontiers Pub Date : 2024-08-17 DOI: 10.1016/j.enmf.2024.08.003

Wen-zhe Huang, Lei Liu, Lu Lu, Yu-ji Liu, Wei Huang, Yong-xing Tang

{"title":"Nitrogen-rich skeleton reassembled ECOFs as energetic materials with low sensitivities and good corrosion resistance","authors":"Wen-zhe Huang, Lei Liu, Lu Lu, Yu-ji Liu, Wei Huang, Yong-xing Tang","doi":"10.1016/j.enmf.2024.08.003","DOIUrl":"https://doi.org/10.1016/j.enmf.2024.08.003","url":null,"abstract":"Corrosion between energetic materials and metal containers can accelerate material aging and failure, significantly affecting the safety, reliability, and lifespan of ammunition systems. To address this challenge, we propose the construction of energetic covalent organic frameworks (ECOFs) as a promising solution. We introduce a straightforward method for synthesizing nitrogen-rich ECOFs. The synthesized ECOFs were characterized through powder X-ray diffraction (PXRD), solid-state nuclear magnetic resonance (ssNMR), and Fourier-transform infrared spectroscopy (FTIR). These frameworks exhibit remarkable thermal stability, with decomposition temperatures above 285 °C. Notably, they display low sensitivity to non-explosive stimuli, as evidenced by impact sensitivity over 60 J and friction sensitivity over 360 N. The anti-rust properties of the ECOFs were further evaluated using Tafel curve analysis, highlighting their exceptional resistance to metal corrosion. Particularly, ECOF-3, synthesized from triaminoguanidine nitrate and 5-nitro-1,3-benzenedicarboxaldehyde, stands out for its superior steel corrosion resistance. These ECOFs have potential applications as high-energy, anti-corrosion coatings materials.","PeriodicalId":34595,"journal":{"name":"Energetic Materials Frontiers","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0