CL-20基压装炸药结构成型载体的设计及其应用

To enhance the safety of hexanitrohexaazaisowurtzitane (CL-20) in preparation, application and storage, the design and application for the structure-forming carrier of CL-20-based pressed explosives were studied by experimental and theoretical methods. The effect of different polymers on the polymorphic transformation of ε-Cl-20 was investigated by the in-situ X-ray diffractometer (XRD). The surface tension and the tension-related components of various polymers were determined by surface contact, adhesion and wetting theories. Moreover, the interface parameters of ε-Cl-20/polymer were also calculated. According to the mechanism of solid-solid polymorphic transformation and the interface parameters of ε-Cl-20/polymer, a structure-forming carrier of CL-20-based pressed explosives was prepared, which was mainly composed of cis-butadiene rubber (BR), compounded with ethylene-propylene-diene rubber (EPDM) and desensitizer wax. The ratios of BR to EPDM and binder to wax were optimized through mechanical properties and safety performance experiments. The results show that, under the condition that the mass ratio of BR to EPDM is 3:1 and binders to wax is 0.6, the CL-20-based pressed thermobaric explosive (52%Cl-20/32%Al/10%AP/6%binder) has an impact sensitivity of 8%, friction sensitivity of 10%, relative density ≥ 96.0% and exhibits excellent mechanical properties, which can meet the requirements of practical application.