Experimental study of reaction properties of aluminum/polytetrafluoroethylene powder under laser ablation

Metal particle size and environment will affect the reaction properties of aluminized polytetrafluoroethylene (Al/PTFE) reactive material. This study experimentally investigated Al/PTFE with different Al sizes through time-resolved self-emitting imaging emission spectroscopy under nanosecond laser ablation in air an inert argon environment. The results show that causes a continuous combustion characteristic long energy release time Al/PTFE. Furthermore, are closely related to powder. intensities durations increase as decreases, but it no longer conforms this rule when decreases nanometers. inconsistency may be due oxidation powder agglomeration nano-Al experiments gas environments proved reactivity is not good because lack between oxygen from air.