Tuning Azolium Azolate Ionic Liquids to Promote Surface Interactions with Titanium Nanoparticles Leading to Increased Passivation and Colloidal Stability.

摘要

Unique, accessible properties, such as high thermal stability, large liquid ranges, high heats of formation, and low to negligible volatility, have led to increased efforts to utilize ionic liquids (ILs; salts with melting points below 100 deg C) to replace currently used energetic materials to promote safety and decrease environmental hazards. Our initial strategies have focused on independent design of either ion to tune the physical and chemical properties of ILs however, often the prospective energetic ionic liquids (EILs) suffer from low energetic densities and heat of combustion. Nanoparticles, of certain elements, might provide increased energetic density and higher heats of combustion by increasing the overall energy of the system far beyond the heat of formation of the typical products of combustion without further increasing the volume of the system. Incorporation of the correctly chosen nanoparticle additives can lead to a variety of performance improvements, such as decreased ignition delay, decreased burn time, and higher density impulse.