Energetic Materials – Particle Processing and Characterization

Incorporation of particular components with specialized properties allows one to tailor the end product's properties. For instance, the sensitivity, burning behavior, thermal or mechanical properties or stability of energetic materials can be affected, and even controllably varied through incorporation of such ingredients. This book examines particle technologies as applied to energetic materials such as propellants and explosives, thus filling a void in the literature on this subject. Following an introduction covering general features of energetic materials, the first section of this book describes methods of manufacturing particulate energetic materials, including size reduction, crystallization, atomization, particle formation using supercritical fluids and microencapsulation, agglomeration phenomena, special considerations in mixing explosive particles and the production of nanoparticles. The second section discusses the characterization of particulate materials. Techniques and methods such as particle size analysis, morphology elucidation and the determination of chemical and thermal properties are presented. The wettability of powders, and rheological behavior of suspensions and solids are also considered. Furthermore, methods of determining the performance of particular energetic materials are described. Each chapter deals with fundamentals and application possibilities of the various methods presented, with particular emphasis on issues applicable to particulate energetic materials. The book is thus equally relevant for chemists, physicists, material scientists, chemical and mechanical engineers and anyone interested or engaged in particle processing and characterization technologies.

Table of Contents:
NEW ENERGETIC MATERIALS Introduction Application Requirements New Energetic Materials Conclusion SIZE REDUCTION Fundamentals of Size Reduction Size Reduction Processes CRYSTALLIZATION Fundamentals of Crystallization Crystallization of Energetic Materials Simulation CRYSTALLIZATION WITH COMPRESSED GASES Introduction Rapid Expansion of Supercritical Solution Supercritical Antisolvent Precipitation Precipitation of Energetic Materials by Supercritical Fluids Conclusions and Perspectives SIZE ENLARGEMENT Agglomeration Microencapsulation and Coating Processes MIXING Introduction Theory Type of Mixers Mixing Time and Efficiency Sequence of Addition of Ingredients Scale Effects Conclusions NANOPARTICLES Nano structured Energetic Materials using Sol Gel Chemistry Detonation Synthesis of Ultrafine Diamond Particles from Explosives ALEX Nanosize Aluminum for Energetic Applications Pneumatic Production Methods for Powdered Energetic Materials PARTICLE CHARACTERIZATION Particle Size Analysis Properties of Powders MICROSTRUCTURE AND MORPHOLOGY Introduction Defects of Explosive Particles Characterization of the Microstructure by X ray Diffraction Composite Explosives as Probed with Microscopy THERMAL AND CHEMICAL ANALYSIS Characterization of Energetic Materials by Thermal Analysis Characterization of Energetic Materials by NMR Spectroscopy Chemical Decomposition in Analysis of Shock Wave Synthesis Materials Conclusion WETTABILITY ANALYSIS Introduction Determination of Surface Energy Surface Characterization using Chromatographic Techniques RHEOLOGY Stationary Shear Flow Flow Behavior of Fluids Non stationary Shear Flow Rheometers Rheology of Suspensions Gel Propellants Rheology as a Development Tool for Injection Moldable Explosives Computer Simulation of Rheological Behavior of Suspensions Rheology of Solid Energetic Materials Injection Loading Technology PERFORMANCE OF ENERGETIC MATERIALS Influence of Particle Size on Reactions of Energetic Materials Defects of Explosive Particles and Sensitivity of Cast Formulations A New, Small scale Test for Characterizing Explosive Performance Diagnostics of Shock Wave Processes in Energetic Materials Diagnostics for the Combustion of Particle containing Solid Fuels with Regard to Ramjet Relevant Conditions

About the Author :
Dr. Ulrich Teipel, 45, Verfahrenstechniker und bisheriger stellvertretender Leiter des Produktbereichs "Energetische Materialien", wechselt vom Fraunhofer Institut fur Chemische Technologie ICT in Pfinztal an die Georg Simon Ohm Fachhochschule Nurnberg, um dort den Lehrstuhl fur Mechanische Verfahrenstechnik, Partikeltechnologie und Fluidmechanik zu ubernehmen. Die offizielle Berufung erfolgte durch den Rektor der FH Nurnberg, Professor Dr. Herbert Eichele im Auftrag des Bayerischen Staatsministers fur Wissenschaft, Forschung und Kunst, Dr. Thomas Goppel. Nach seinem Maschinenbau Studium an der RWTH Aachen setzte Ulrich Teipel seine wissenschaftliche Laufbahn 1991 im ICT mit Arbeiten zur mechanischen Verfahrenstechnik fort, promovierte extern an der Universitat Bayreuth und wurde 1996 zum stellvertretenden Leiter der Abteilung "Energetische Materialien" des Fraunhofer ICT berufen. Er hat dort insbesondere die Partikeltechnologie ausgebaut und sich einen hervorragenden Ruf in der mechanischen Verfahrenstechnik erarbeitet, unter anderem auch durch die Begrundung der ICT Kongressreihe "Partikeltechnologie". Er wird dem Fraunhofer ICT im Rahmen einer vertraglich vereinbarten Zusammenarbeit weiterhin eng verbunden bleiben und dort die entsprechenden wissenschaftlichen Arbeiten betreuen.

Review :
'I think this is a very worthwhile project. There is definitely a requirement for a book of this type. I was impressed with the enthusiasm, knowledge and quality of the work of Dr. Teipel: I believe he is very highly qualified to be the editor of this book. It is a very timely subject matter for publication. The ICT has an excellent reputation as leaders in the field. I am sure this reputation and record of achievement will assure a very successful book' (Dr. Atkins -- Lawrence Livermore National Laboratory, The Energetic Materials Center, CA, USA) 'This is an important and growing area at present and yes there is a need for such a publication. Authors'/editor's standing: Very good'. (Dr. Cumming -- Defense Research Agency, Fort Halstead, UK) 'The concept seems to be very good and well built. The subject will be described by well--known specialists in the field. Editor as well as authors are respected people in the scientific community.' (Professor Schmidt, Bergische Universitat Wuppertal, Germany)