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In this study, a novel type of composite explosive was prepared by adding titanium fiber into the RDX explosive. The effects of the content of titanium fiber on the performance of the RDX explosive were systematically studied, and the optimal concentration was obtained by comparing its performances with the RDX explosive. Underwater explosion experiments showed the optimal concentration was 15 mass%, in which the value of specific bubble energy, as well as total energy was acquired the maximum. Especially, the energy density of composite explosive with 10 mass% titanium fiber was 10.64 kJ·cm −3 , compared with aluminum fiber explosive, which was increased by 17.96%. Meanwhile, results of the MTS809 machine indicated that the optimal concentration was 19.16 volume%, in which the ultimate stress increased by 175%, and critical strain increased by 393%. Additionally, better mechanical properties ensured process safety in the course of transportation and storage of explosives. Therefore, titanium fiber could be a potential energetic additive and played double roles in improving the properties of the RDX explosive significantly including detonation performances and anti-pressure ability.

Effects of content of titanium fiber on detonation characteristics and mechanical properties of RDX explosive