The problems of synthesis, properties and applications of environmentally-friendly, primary explosives are discussed. Several prospective, lead-free primary explosives have been prepared and thoroughly studied during recent decades. However, the manufacture of modern, 'green' energetic materials on an industrial scale for practical applications in civil and military primers, is a task for the near future.
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Development of condensed energetic systems, especially photosensitive primary explosives for the systems of laser initiation is one of the foremost fields of application of energetic materials. There have been synthesized and investigated a coordination complex of mercury(II) chlorate(VII) with 5-hydrazinotetrazole as ligand (compound (I)) as a potential photosensitive primary explosive. This complex consisting of particles of 1.1 0.8 m size demonstrated the highest sensitivity to laser irradiation combined with an extremely low initiation threshold. On the basis of compound (I) a photosensitive formulation EC-2 containing ∼ 90% of the complex mercury(II) chlorate(VII) and ∼ 10% of an optically transparent polymer as an inert matrix has been proposed. Formulation EC-2 has extremely high sensitivity to Q-switch IR-laser irradiation. Formulation EC-2 with added ultra disperse diamonds (UDD) has shown lower initiation thresholds in comparison with neat EC-2 or EC-2 with added submicron black carbon, fullerens or nanotubes instead of UDD.
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Methods for the synthesis of novel energetic complex perchlorates of d-metals have been developed. According to derivatographic analysis data, the complexes are thermally stable compounds. One of the promising ways of regulating ballistic characteristics of highly filled energetic formulations is the introduction of burn modifiers. Complex compounds of d-metals are known to be effective modifiers of the process of burning. Ballistic tests were made in a constant pressure bomb and demonstrated that the prepared compounds are promising modifiers of the burn rate and can be used in the developed formulations of rocket propellants.
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