EVALUATION OF THE EXPLOSIVE PERFORMANCE OF CL-20

摘要

The calculation of both the heat of explosion and the acceleration ability (the expansion of copper tube and the acceleration of the steel plate) was performed for the promising high explosives CL-20, using the semi-empirical methods suggested in previous papers. The explosive parameters of CL-20 were compared with those of HMX, RDX and HNB. From the calculation results it follows that the acceleration ability of ε-CL-20 is approximately 7% greater than that of HMX. When accelerating the copper tube, HNB releases its energy more slowly than CL-20 does. The results of calculation are consistent with the experimental data available in the literature. The addition of explosive oxidizers, such as BFADNEN, BTNEN, and HNF, can increase the heat of explosion of CL-20. However, only a very powerful explosive oxidizer -BFADNEN, when added to CL-20, can enhance the acceleration ability of the latter (by 3%). The addition of Al powder enhances both the heat of explosion and the acceleration ability of the explosives considered. Therewith, changing micron-sized Al to nano-sized one doesn't give the additional gain in the explosive performance. The nano-composites with uniform distribution of nano-sized Al particles can outperform the mechanical mixtures in the heat of explosion when, first, the concentration of Al additive is high and, second, the base explosive has negative oxygen balance.