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Cast composite explosives based on hexogen with the maximum detonation parameters
Gordana Antić Vesna Džingalašević
Plastic-bonded explosives (PBX) with a high content of explosive components (80-85%) are obtained by varying the hexogen granulometric composition and the optimization of polyurethane binder composition based on polyether polyol. Hexogen with bimodal, trimodal and continual particle size distributions is used. The best characteristics of production and full reproducibility of PBX quality are achieved by using the trimodal RDX. Physical, chemical and mechanical characteristics, shock sensitivity and detonation parameters for the Chapman-Jouguet (CJ) condition are determined. The maximum values of detonation parameters are achieved with the composition of 84% hexogen and 16% polyurethane binder (D=8120 m/s, P=220 kbar). These results are compared with the measured detonation velocity and the pressure results of composite explosives based on octogen and PBX theoretical detonation parameters.
Key words: Composite explosives, polyurethane elastomer, hexogen, detonation parameters, explosive characteristics. |