10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
Abstract View
Electrospray Deposition as a Tool for Processing Energetic Polymer Composites
Haiyang Wang, MICHAEL ZACHARIAH, University of Maryland, College Park
Abstract Number: 568 Working Group: Materials Synthesis
Abstract Electrospray is shown as a tool in the preparation of nanoenergetic based composites with a variety of morphologies ranging from fibers, microparticles composites and thin films, by varying precursor concentrations, binder content, nanoparticle loading and flight time. Examples will be described including the formation of thermite based nanofiber mats with a nitrocellulose composite energetic binder to create a new class of energetic 1-D nanocomposite. Employing electrospray as a means to create a gel within a droplet by evaporation induced rapid aggregation, enables us to generate microparticles of nano-aluminum and oxidizer nanoparticles. We find that the average size of the microparticles can be systematically changed from 2 μm to 16 μm. Finally by preventing drop evaporation the electrospray deposition method is employed to create high loadings of aluminum nanoparticles (Al-NPs) in polyvinylidene fluoride (PVDF) reactive composite films. The deposited films containing up to 50 wt % Al are found to be crack free and mechanically flexible.
In all cases the combustion performance was evaluated by a variety of metrics.