Ever since the introduction of nitrocellulose (NC) as an explosive fill in the 1850s, polymers have contributed considerably to advancements in the technology of both propellants and explosives. In addition to the specific instance of the use of NC polymer in explosive fills, applications of polymers have been most extensive in binders andplasticizers.Over the years,with thematurity of composit...

Rationale: Monitoring was required for the introduction of non-chlorofluorocarbon (CFC) propellants in metered dose inhalers (MDIs) to ensure that there were no unexpected adverse events due to the new products. A postmarketing observational study was conducted to evaluate the introduction of the MDI Seretide Evohaler TM (hydrofluoroalkane-134a inhaler containing salmeterol and fluticasone prop...

Ionic liquid ferrofluids based on mixtures of [Emim][EtSO4] and [Bmim][NO3] fuels and hydroxylamonium nitrate oxidizer were synthesized by adding iron oxide nanoparticles. The resulting propellants were then tested for decomposition capability. Spot plate testing indicated that the temperature required to initiate rapid decomposition dropped from 115 o C to 75 o C with a 30% by weight addition ...

A mix of biocompatible macromolecules (poly(vinyl alcohol) (PVA) and poly(vinyl pyrrolidone) (PVP)) has been shown previously to enhance the physical stability of non-aqueous pharmaceutical suspensions. The aim of this work was to assess the feasibility of employing such a combination to facilitate the formulation of deoxyribonuclease I (DNase I) in a metered dose inhaler (MDI) using hydrofluor...

Commercial interest in perchlorates began in the late 1890s/early 1900s in Europe and the United States as a direct result of the pioneering efforts in rockets and their propulsion systems (Mendiratta et al. 1996). The production of ammonium perchlorate, the largest component of solid rocket propellants, far outpaced that of the other perchlorates listed in Table 4-1. Their commercial manufactu...

To investigate the crystallization of DNTF in modified double-base propellants, glycidyl azide polymer (GAP) was used as coating material for situ DNTF, and performance investigated to inhibit crystallization. The results show that GAP can form a white gel on surface crystals has good effect which significantly reduce impact sensitivity friction DNTF. Molecular dynamics construct bilayer interf...

The paper considers utilization of rocket motor propellant grains that consist two propellants. idea is to achieve approximately neutral burning using an outer surface inhibited cylindrical shape and complex contact between An existing grain with geometry has been analytically modeled in terms determination evolution corresponding areas. analytical experimental results? diagrams this have found...

Aluminum (Al) has been widely used in micro-electromechanical systems (MEMS), polymer bonded explosives (PBXs) and solid propellants. Its typical core-shell structure (the inside active Al core the external alumina (Al2O3) shell) determines its oxidation process, which is mainly influenced by oxidant diffusion, Al2O3 crystal transformation melt-dispersion of Al. Consequently, properties can be ...