Effects of Aluminum Powder on Ignition Performance of RDX, HMX, and CL‐20 Explosives

As a kind of high explosives, aluminized explosive cannot release the energy maximumly, which is a key problem. Using DTA‐TG equipment, the ignition performance of three kinds of aluminized explosives (RDX, HMX, and CL‐20) with different mass percentages of aluminum powder (0%, 10 wt.%, 20 wt.%, and 30 wt.%) was investigated. The results showed that the energy release of the HMX/Al composite explosive with 10 wt.%, 20 wt.%, and 30 wt.% aluminum powder was only equivalent to 80%, 65%, and 36% of pure HMX, respectively. It was similar to RDX/Al and CL‐20/Al composite explosives, except the CL‐20/Al mixture with 10% aluminum powder. Rather than participating in the ignition and combustion, the aluminum powder does effect the complete reaction of RDX, HMX, and CL‐20 in the initial stage of ignition or in the lower temperature area of the boundary.