Effect of Process Parameters on the Properties of Direct Written gas-generating Reactive Layers
- Sevely, Florent
- Liu, Xuwen
- Wu, Tao
- Mesnilgrente, Fabien
- Franc, Bernard
- Assié-Souleille, Sandrine
- Dollat, Xavier
- Rossi, Carole
DOIAbstract
International audienceA mixture of copper complex and Al/CuO nanothermite, Al/CuO/CuC, represents one of the state-of-the-art gas-generating thermite systems with various pyrotechnic applications due to its tunable gas release rates. The reactivity of reactive inks with various loadings of the poly(vinylpyrrolidone) (PVP) binder mixed with Al/CuO/CuC is characterized using high-speed imaging diagnostics and pressure measurements. For a PVP mass fraction of <7 wt %, the printed materials remain highly reactive and burn at a high velocity (10–54 m/s), which was one of the important goals of this study. At higher PVP contents, the polymer inhibits the reaction. Printing (dropwise and continuously writing) of inks containing 5 wt % PVP and 95 w...
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