Effect of Perchlorate on Combustion Properties of Directly-Written Al/PVDF Composites

Abstract

Metastable intermolecular composites (MICs) based on Al/PVDF have become one of the most important materials in the field of additive manufacturing of energetic materials due to their high energy density and designability. In this work, the energy utilization efficiency and energy release performance of directly written Al/PVDF composites were regulated by introducing ammonium perchlorate (AP) and potassium perchlorate (KP) as gas generators and oxidants. The effect of AP/KP on the combustion performance of MICs systems has been studied in depth. It was found that the addition of AP/KP can increase the combustion temperature and flame duration of the Al/PVDF system. Moreover, the flame propagation rate of the Al/PVDF system decreases as AP/KP addition increases. Therefore, the strategy of introducing AP/KP into directly written Al/PVDF composites can effectively control the energy performance of this energetic system, thereby promoting its practical application in propellants, heterogeneous explosives and gas generators.

Keywords

• metastable intermolecular composite
• n-Al/PVDF
• perchlorate
• direct ink writing
• combustion properties