Mechanochemical Processes In Energetic Materials

This book uses experimental and computational methods to rationalize and predict for the first time the relative impact sensitivities of a range of energetic materials. Using knowledge of crystal structures, vibrational properties, energy-transfer mechanisms, and experimentally measured sensitivities, it describes a model that leads to excellent correlation with experimental results in all cases. As such, the book paves the way for a new, fully ab initio approach for the design of safer energetic materials based solely on knowledge of their solid-state structures. Energetic materials (explosives, propellants, gas generators, and pyrotechnics) are defined as materials that release heat and/or gaseous products at a high rate upon stimulus by heat, impact, shock, sparks, etc. They have widespread military and civilian uses, including munitions, mining, quarrying, demolition, emergency signaling, automotive safety, and space exploration. One of their most important properties is sensitivity to accidental initiation during manufacture, transport, storage, and operation, which has important implications for their safe use.

' Few books cover experimental and theoretical methods to characterize decomposition, combustion and detonation of energetic materials. This volume, by internationally known and major contributors to the field, is unique because it summarizes the most important recent work, what we know with confidence, and what main areas remain to be investigated. Most chapters comprise summaries of work spanning decades and contain expert commentary available nowhere else. Although energetic materials are its focus, this book provides a guide to modern methods for investigations of condensed and gas-phase reactions. Although these energetic reactions are complex and difficult to study, the work discussed here provides readers with a substantial understanding of the behavior of materials now in use, and a predictive capability for the development of new materials based on target properties. Contents:Connecting Molecular Properties to Decomposition, Combustion and Explosion Trends (T B Brill)Thermal Decomposition Processes of Energetic Materials in the Condensed Phase at Low and Moderate Temperatures (R Behrens)Study of Energetic Material Combustion Chemistry by Probing Mass Spectrometry and Modeling of Flames (O P Korobeinichev)Optical Spectroscopic Measurements of Energetic Material Flame Structure (T Parr & D Hanson-Parr)Transient Gas-Phase Intermediates in the Decomposition of Energetic Materials (P J Dagdigian)Role of Excited Electronic States in the Decomposition of Energetic Materials (E R Bernstein)Gas-Phase Kinetics for Propellant Combustion Modeling: Requirements and Experiments (W R Anderson & A Fontijn)Gas-Phase Decomposition of Energetic Molecules (D L Thompson)Modeling the Reactions of Energetic Materials in the Condensed Phase (L E Fried et al.)Multi-Phonon Up-Pumping in Energetic Materials (D D Dlott)Applications of Theoretical Chemistry in Assessing Energetic Materials for Performance or Sensitivity (B M Rice)Combustion and Ignition of Nitramine Propellants: Aspects of Modeling, Simulation, and Analysis (E S Kim & V Yang)Burning-Rate Models and Their Successors, A Personal Perspective (M S Miller)Ideas to Expand Thinking About New Energetic Materials (J Bottaro) Readership: Researchers studying fast chemical reactions and materials behavior under extreme conditions. Experts and beginners in energetic decomposition, combustion and detonation research. Keywords:Energetic Materials;Combustion;Thermal Decomposition;Combustion Model;Materials Design;Flames;Explosive;Propellant;Computational Chemistry;DetonationKey Features:Summarizes the known knowns (the most important recent work) and lists the known unknowns (what remains to be investigated)Provides expert commentary on the complex behavior of materialsReviews:“This book nicely covers the application of many experimental and theoretical tools to study the difficult problem of ignition and combustion of many traditional energetic materials. It could be a valuable resource to the researchers in the field.”Journal of the American Chemical Society '

Considerable advances have been made in mechanochemistry in the last couple of decades. Training of experts in this field with a background in materials science, chemical and mechanical engineering, etc. requires study of the fundamentals of mechanochemistry. There is a need for a textbook in the general and compressed form which would cover many aspects and would be used as a basis for understanding the fundamental principles to control mechanochemical phenomena. This textbook is based on lectures given by Prof Gutman in a graduate course in the mechanochemistry of materials at the Ben-Gurion University of the Negev. The book contains examples of experimental results to illustrate the mechanochemical phenomena and technologies Contents What is mechanochemistry of materials? Basic features of the behaviour of solids relevant to mechanochemical processes Irreversible thermodynamics of mechano-chemical reactions Kinetics of mechanochemical reactions under different stress state Main types of heterogeneous mechano-chemical reactions Mechanoelectrical phenomena and mechano-emission Application of mechanochemistry in materials engineering

This book will take an in-depth look at the technologies, processes, and capabilities to develop and produce "next generation" energetic materials for both commercial and defense applications, including military, mining operations, oil production and well perforation, and construction demolition. It will serve to highlight the critical technologies, latest developments, and the current capability gaps that serve as barriers to military fielding or transition to the commercial marketplace. It will also explain how the processing technologies can be spun out for use in other non-energetics related industries.

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.

This volume provides an overview of current research and recent advances in the area of energetic materials, focusing on decomposition, crystal and molecular properties. The contents and format reflect the fact that theory, experiment and computation are closely linked in this field. Since chemical decomposition is of fundamental importance in energetic performance, this volume begins with a survey of the decomposition processes of a variety of energetic compounds. This is followed by detailed studies of certain compounds and specific mechanisms, such as nitro/aci-nitro tautomerism. Chapter 6 covers the transition from decomposition to crystal properties, with molecular dynamics being the primary analytical tool. The next several chapters deal with different aspects of the crystalline state, again moving from the general to particular. There is also a discussion of methods for computing gas, liquid and solid phase heats of formation. Finally, the last portion of this volume looks at the potential of high-nitrogen molecules as energetic systems; this has been of considerable interest in recent years.Overall, this volume illustrates the progress that has been made in the field of energetic materials and some of the areas of current activity. It also indicates the challenges involved in characterizing and understanding the properties and behaviour of these compounds. The work is a unique state-of-the-art treatment of the subject, written by pre-eminent researchers in the field. - Overall emphasis is on theory and computation, presented in the context of relevant experimental work- Presents a unique state-of-the-art treatment of the subject- Contributors are preeminent researchers in the field

This volume provides an overview of current research and recent advances in the area of energetic materials, focusing on explosives and propellants. The contents and format reflect the fact that theory, experiment and computation are closely linked in this field. The challenge of developing energetic materials that are less sensitive to accidental stimuli continues to be of critical importance. This volume opens with discussions of some determinants of sensitivity and its correlations with various molecular and crystal properties. The next several chapters deal in considerable detail with different aspects and mechanisms of the initiation of detonation, and its quantitative description. The second half of this volume focuses upon combustion. Extensive studies model ignition and combustion, with applications to different propellants. The final chapter is an exhaustive computational treatment of the mechanism and kinetics of combustion initiation reactions of ammonium perchlorate. Overall, this volume illustrates the progress that has been made in the field of energetic materials and some of the areas of current activity. It also indicates the challenges involved in characterizing and understanding the properties and behaviour of these compounds. The work is a unique state-of-the-art treatment of the subject, written by pre-eminent researchers in the field. - Overall emphasis is on theory and computation, presented in the context of relevant experimental work - Presents a unique state-of-the-art treatment of the subject - Contributors are preeminent researchers in the field

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.