Download or read book INSENSITIVE HIGH NITROGEN COMPOUNDS written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The conventional approach to developing energetic molecules is to chemically place one or more nitro groups onto a carbon skeleton, which is why the term ''nitration'' is synonymous to explosives preparation. The nitro group carries the oxygen that reacts with the skeletal carbon and hydrogen fuels, which in turn produces the heat and gaseous reaction products necessary for driving an explosive shock. These nitro-containing energetic molecules typically have heats of formation near zero and therefore most of the released energy is derived from the combustion process. Our investigation of the tetrazine, furazan and tetrazole ring systems has offered a different approach to explosives development, where a significant amount of the chemical potential energy is derived from their large positive heats of formation. Because these compounds often contain a large percentage of nitrogen atoms, they are usually regarded as high-nitrogen fuels or explosives. A general artifact of these high-nitrogen compounds is that they are less sensitive to initiation (e.g. by impact) when compared to traditional nitro-containing explosives of similar performances. Using the precursor, 3,6-bis-(3,5-dimethylpyrazol-1-yl)-s-tetrazine, several useful energetic compounds based on the s-tetrazine system have been synthesized and studied. Some of the first compounds are 3,6-diamino-s-tetrazine-1,4-dioxide (LAX-112) and 3,6-dihydrazino-s-tetrazine (DHT). LAX-112 was once extensively studied as an insensitive explosive by Los Alamos; DHT is an example of a high-nitrogen explosive that relies entirely on its heat of formation for sustaining a detonation. Recent synthesis efforts have yielded an azo-s-tetrazine, 3,3'-azobis(6-amino-s-tetrazine) or DAAT, which has a very high positive heat of formation. The compounds, 4,4'-diamino-3,3'-azoxyfurazan (DAAF) and 4,4'-diamino-3,3'-azofurazan (DAAzF), may have important future roles in insensitive explosive applications. Neither DAAF nor DAAzF can be initiated by laboratory impact drop tests, yet both have in some aspects better explosive performances than 1,3,5-triamino-2,4,6-trinitrobenzene TATB--the standard of insensitive high explosives. The thermal stability of DAAzF is equal to that of hexanitrostilbene (HNS), yet it too is a better explosive performer. The recently discovered tetrazol derivative, 3,6-bis-(1H-1,2,3,4-tetrazol-5-ylamino)-s-tetrazine (BTATz) was measured to have exceptional positive heats of formation and to be insensitive to explosive initiation. Because of its high burn rate with low sensitivity to pressure, this material is of great interest to the propellant community.
Download or read book High nitrogen Explosives written by and published by . This book was released on 2002 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The syntheses and characterization of various tetrazine and furazan compounds offer a different approach to explosives development. Traditional explosives - such as TNT or RDX - rely on the oxidation of the carbon and hydrogen atoms by the oxygen carrying nitro group to produce the explosive energy. High-nitrogen compounds rely instead on large positive heats of formation for that energy. Some of these high-nitrogen compounds have been shown to be less sensitive to initiation (e.g. by impact) when compared to traditional nitro-containing explosives of similar performances. Using the precursor, 3,6-bis-(3,5-dimethylpyrazol-1-yl)-s-tetrazine (BDT), several useful energetic compounds based on the s-tetrazine system have been synthesized and studied. The compound, 3,3(prime)-azobis(6-amino-s-tetrazine) or DAAT, detonates as a half inch rate stick despite having no oxygen in the molecule. Using perfluoroacetic acid, DAAT can be oxidized to give mixtures of N-oxide isomers (DAAT03.5) with an average oxygen content of about 3.5. This energetic mixture burns at extremely high rates and with low dependency on pressure. Another tetrazine compound of interest is 3,6-diguanidino-s-tetrazine(DGT) and its dinitrate and diperchlorate salts. DGT is easily synthesized by reacting BDT with guanidine in methanol. Using Caro's acid, DGT can be further oxidized to give 3,6-diguanidino-s-tetrazine-1,4-di-N-oxide (DGT-DO). Like DGT, the di-N-oxide can react with nitric acid or perchloric acid to give the dinitrate and the diperchlorate salts. The compounds, 4,4(prime)-diamino-3,3(prime)-azoxyfurazan (DAAF) and 4,4(prime)-diamino-3,3(prime)-azofurazan (DAAzF), may have important future roles in insensitive explosive applications. Neither DAAF nor DAAzF can be initiated by laboratory impact drop tests, yet both have in some aspects better explosive performances than 1,3,5-triamino-2,4,6-trinitrobenzene TATB - the standard of insensitive high explosives. The thermal stability of DAAzF is equal to that of hexanitrostilbene (HNS), yet it has a greater CJ pressure and detonation velocity. In an effort to reduce the critical diameter of TATB without sacrificing its insensitivity, we have studied the explosive performances of TATB mixed with DAAzlF (X-0561) and TATB mixed with DAAF (X-0563).
Download or read book High Energy Density Materials written by Thomas M. Klapötke and published by Springer. This book was released on 2007-06-12 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Nitrogen Explosives Part 2 Dibenzo 1 3a 4 6a Tetraazapentalenes and Benzo 1 2 3 4 Tetrazine 1 3 Dioxides written by Karen L. Altmann and published by . This book was released on 1996-08-01 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: High nitrogen materials are sought as a potentially dense, powerful but insensitive explosive and propellant ingredients. Elucidation of the structure and chemistry of dibenzo-1 ,3a,4,6a-tetraazapentalenes has continued, with particular attention to a putative C12N12O12 derivative initially prepared at the University of New Orleans. This research contributed substantially to identification of the actual o-quinone hydrate structure, and explanation of the apparently anomalous explosive insensitivity of the material. Synthesis of the novel 5,7-dinitrobenzo-1 ,2,3,4-tetrazine-1,3-dioxide has been repeated, its structure has been confirmed, and preliminary evaluation of its explosive sensitivity has been completed.
Download or read book Green Energetic Materials written by Tore Brinck and published by John Wiley & Sons. This book was released on 2014-01-15 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book presents a detailed account of research and recent developments in the field of green energetic materials, including pyrotechnics, explosives and propellants. This area is attracting increasing interest in the community as it undergoes a transition from using traditional processes, to more environmentally-friendly procedures. The book covers the entire line of research from the initial theoretical modelling and design of new materials, to the development of sustainable manufacturing processes. It also addresses materials that have already reached the production line, as well as considering future developments in this evolving field.
Download or read book Energetic Compounds written by Mohammad Hossein Keshavarz and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-05-05 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses methods for the assessment of energetic compounds through heat of detonation, detonation pressure, velocity and temperature, Gurney energy and power. The authors focus on the detonation pressure and detonation velocity of non-ideal aluminized energetic compounds. This 2nd Edition includes an updated and improved presentation of simple, reliable methods for the design, synthesis and development of novel energetic compounds.
Download or read book The High Nitrogen Compounds written by Frederic R. Benson and published by Wiley-Interscience. This book was released on 1984 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Industrial Nitrogen Compounds and Explosives written by Geoffrey Martin and published by . This book was released on 1915 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Insensitive High Performance Replacements for RDX in Explosive and Propellant Formulations written by and published by . This book was released on 2007 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the proposed research project is to investigate and explore the chemistry of neutral (covalent) high-nitrogen compounds and high-nitrogen salts as potential energetic ingredients for gun propellant charges and replacements for RDX. The new high-nitrogen compounds and salts should be less environmentally hazardous, have no greater sensitivities, and have equal or better performance.
Download or read book Nitrogen Rich Energetic Materials written by Michael Gozin and published by John Wiley & Sons. This book was released on 2022-12-12 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen-Rich Energetic Materials Provides in-depth and comprehensive knowledge on both the chemistry and practical applications of nitrogen-rich energetic materials Energetic materials, a class of material with high amounts of stored chemical energy, include explosives, pyrotechnics, and propellants. Initially used for military applications, nitrogen-rich energetic materials have become important in the civil engineering and aerospace sectors, they are increasingly used in commercial mining and construction as well as in rocket propulsion. Making these nitrogen-rich energetic materials safer, more powerful, and more cost-effective requires a thorough understanding of their chemistry, physics, synthesis, properties, and applications. Nitrogen-Rich Energetic Materials presents a detailed summary of the development of nitrogen-rich energetic materials over the past decade and provides up-to-date knowledge on their applications in various areas of advanced engineering. Edited by a panel of international experts in the field, this book examines the chemistry of pentazoles, fused ring and laser ignitable nitrogen-rich compounds, polynitrogen and tetrazole-based energetic compounds, and more. The text also introduces applications of nitrogen-rich energetic materials in energetic polymers and metal-organic frameworks, as pyrotechnics materials for light and smoke, and in oxadiazoles from precursor molecules. This authoritative volume: Presents in-depth chapters written by leading experts in each sub-field covered Offers a systematic introduction to new and emerging applications of nitrogen-rich energetic materials such as in computational chemistry Discusses recent advances in nitrate ester chemistry with focus on propellant applications Discusses green and eco-friendly approaches to nitrogen-rich compounds Nitrogen-Rich Energetic Materials is an important resource for researchers, academics, and industry professionals across fields, including explosives specialists, pyrotechnicians, materials scientists, polymer chemists, laser specialists, physical chemists, environmental chemists, chemical engineers, and safety officers.
Download or read book Chemistry of High Energy Materials written by Thomas M. Klapötke and published by Walter de Gruyter GmbH & Co KG. This book was released on 2017-08-21 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 4th revised edition expands on the basic chemistry of high energy materials of the precious editions and examines new research developments, including hydrodynamics and ionic liquids. Applications in military and civil fields are discussed. This work is of interest to advanced students in chemistry, materials science and engineering, as well as to all those working in defense technology.
Download or read book The Chemistry of Explosives written by Jacqueline Akhavan and published by Royal Society of Chemistry. This book was released on 2004 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Revised and expanded to reflect new developments in the field, this book outlines the basic principles required to understand the chemical processes of explosives. The Chemistry of Explosives provides an overview of the history of explosives, taking the reader to future developments. The text on the classification of explosive materials contains much data on the physical parameters of primary and secondary explosives. The explosive processes of deflagration and detonation, including the theory of 'hotspots' for the detonation process, are introduced and many examples are provided in the detailed description on the thermochemistry of explosives. New material includes coverage of the latest explosive compositions, such as high temperature explosives, nitrocubanes, energetic polymers, plasticizers and insensitive munitions (IM). This concise, readable book is ideal for 'A' level students and new graduates with no previous knowledge of explosive materials. With detailed information on a vast range of explosives in tabular form and an extensive bibliography, this book will also be useful to anyone needing succinct information on the subject.
Download or read book Advanced Energetic Materials written by National Research Council and published by National Academies Press. This book was released on 2004-01-30 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced energetic materialsâ€"explosive fill and propellantsâ€"are a critical technology for national security. While several new promising concepts and formulations have emerged in recent years, the Department of Defense is concerned about the nation's ability to maintain and improve the knowledge base in this area. To assist in addressing these concerns, two offices within DOD asked the NRC to investigate and assess the scope and health of the U.S. R&D efforts in energetic materials. This report provides that assessment. It presents several findings about the current R&D effort and recommendations aimed at improving U.S. capabilities in developing new energetic materials technology. This study reviewed U.S. research and development in advanced energetics being conducted by DoD, the DoE national laboratories, industries, and academia, from a list provided by the sponsors. It also: (a) reviewed papers and technology assessments of non-U.S. work in advanced energetics, assessed important parameters, such as validity, viability, and the likelihood that each of these materials can be produced in quantity; (b) identified barriers to scale-up and production, and suggested technical approaches for addressing potential problems; and (c) suggested specific opportunities, strategies, and priorities for government sponsorship of technologies and manufacturing process development.
Download or read book The Chemistry of High Nitrogen Compounds proceedings written by United States. Office of Ordnance Research and published by . This book was released on 1956* with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Rocket Propulsion written by Luigi T. De Luca and published by Springer. This book was released on 2016-08-19 with total page 1069 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developed and expanded from the work presented at the New Energetic Materials and Propulsion Techniques for Space Exploration workshop in June 2014, this book contains new scientific results, up-to-date reviews, and inspiring perspectives in a number of areas related to the energetic aspects of chemical rocket propulsion. This collection covers the entire life of energetic materials from their conceptual formulation to practical manufacturing; it includes coverage of theoretical and experimental ballistics, performance properties, as well as laboratory-scale and full system-scale, handling, hazards, environment, ageing, and disposal. Chemical Rocket Propulsion is a unique work, where a selection of accomplished experts from the pioneering era of space propulsion and current technologists from the most advanced international laboratories discuss the future of chemical rocket propulsion for access to, and exploration of, space. It will be of interest to both postgraduate and final-year undergraduate students in aerospace engineering, and practicing aeronautical engineers and designers, especially those with an interest in propulsion, as well as researchers in energetic materials.
Download or read book Boom written by Simon Quellen Field and published by Chicago Review Press. This book was released on 2017-07-01 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Black powder, the world's first chemical explosive, was originally developed during the Tang dynasty in China.It was a crude mixture at first, but over time chemists discovered the optimum proportion of sulfur, charcoal, and nitrates, as well as the best way to mix them for a complete and powerful reaction. Author and chemistry buff Simon Quellen Field takes readers on a decades-long journey through the history of things that go boom, from the early days of black powder to today's modern plastic explosives. Not just the who, when, and why, but also the how. How did Chinese alchemists come to create black powder? What accidents led to the discovery of high explosives? How do explosives actually work on a molecular scale? Boom! The Chemistry and History of Explosives reviews the original papers and patents written by the chemists who invented them, to shed light on their development, to explore the consequences of their use for good and ill, and to give the reader a basic understanding of the chemistry that makes them possible.
Download or read book Organic Chemistry of Explosives written by Jai Prakash Agrawal and published by John Wiley & Sons. This book was released on 2007-01-11 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Chemistry of Explosives is the first text to bring together the essential methods and routes used for the synthesis of organic explosives in a single volume. Assuming no prior knowledge, the book discusses everything from the simplest mixed acid nitration of toluene, to the complex synthesis of highly energetic caged nitro compounds. Reviews laboratory and industrial methods, which can be used to introduce aliphatic C-nitro, aromatic C-nitro, N-nitro, and nitrate ester functionality into organic compounds Discusses the advantages and disadvantages of each synthetic method or route, with scope, limitations, substrate compatibility and other important considerations Features numerous examples in the form of text, reaction diagrams, and tables.
