Elaboration of nanodiamond based energetic composites, investigation of the reactive properties in relation with their morphology
Language French
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This document is protected under the French copyright law (Code de la Propriété Intellectuelle).

 
Author : Guillevic, Mazheva
Date : 16-12-2019

Research director(s) : Pichot, Vincent

???xsl.tef.president??? : Gadiou, Roger
Rapporteur(s) : Soulard, Laurent - Gacoin, Thierry
Membre(s) du jury : Lafontaine, Eric - Lamy, Peggy

Institution : Strasbourg
Laboratory : Nanomatériaux pour les systèmes sous sollicitations extrêmes (Strasbourg)
Doctoral school : École doctorale Physique et chimie-physique (Strasbourg ; 1994-....)
 
Discipline : Sciences des matériaux
Classification : Engineering, Chemical engineering, food technology

Keyword(s) : Nanodiamonds, Energetic material, Core-shell, Desensitization, Reactivity
Keyword(s) :
  • Matériaux énergétiques
  • Diamant -- Couches minces
Abstract : Nanodiamonds (NDs) are associated with an energetic material to achieve safer handling of secondary explosives. Due to its heat dissipating property, ND is a promising and novel candidate for desensitizing applications. Experimentally, NDs are used in the process as crystallization seeds for core-shell growth. Coated by a layer of crystalline secondary explosive, the NDs are supposed to constitute the inner constituent of a core-shell type material. Three preparation methods are compared: physical mixing, slow evaporation, Spray Flash Evaporation process. Only the last method leads to core-shell particles. In the presence of NDs, the energetic material is highly desensitized towards external stimuli such as impact, friction, shock and electrostatic discharge, which reduces the probability of an accidental decomposition. Moreover, reactivity of the composite (detonation velocity) is maintained in comparison to the pure material.
 
Content type : Text
Format : PDF
 
Repository : STAR : dépôt national des thèses électroniques françaises
Identifier : 2019STRAE049
Document type : TEF