• Courty, Léo
• Roseres, Charles-Arthur
• Boulnois, Christophe
• Renard, Corentin Le
• Gillard, Philippe

Abstract

Pyrotechnic compositions are energetic materials made of the reactive combination of granular reducers with granular oxidisers. The reaction of pyrotechnic compositions is involved in many applications, from light emission in flares or fireworks to smoke/gas production or even delay compositions. Many physico-chemical parameters of the constituents are involved at multiple scales to obtain the desired effects, represented by macroscopic values such as combustion rate and reaction enthalpy. Due to new international standards, such as REACh, many components of pyrotechnic compositions have to be substituted. In order to achieve this, the interactions between the physico-chemical properties of the constituents have to be thoroughly investigated. This paper deals with both experiments and preliminary simulations, studying some influential parameters of the performances of a given pyrotechnic composition. The work presented here is part of a long-term project whose final aim is to offer a mathematical model for determining the physico-chemical properties and performances of a given pyrotechnic composition. The oxidiser/reducer balance will be investigated and discussed in the present article. The study begins with thermal analyses, ThermoGravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC), of the raw materials that will be used. The selected products are a peroxide as oxidiser, strontium peroxide, and a metallic reducer, magnesium. Then, different binary compositions between magnesium and strontium peroxide will be studied. These experiments will feed a first unidimensional kinetic model.

Topics

• impedance spectroscopy
• experiment
• simulation
• Magnesium
• Magnesium
• reactive
• Strontium
• combustion
• thermogravimetry
• differential scanning calorimetry