Aiming at the problem of poor safety of hexanitrohexaazaisowurtzitane(CL-20),the work of compounding two high-energy components of CL-20 and Al powder was carried out based on the Pickering emulsion method.The energetic binder nitrated bacterial cellulose(NBC)was introduced to reduce the sensitivity of the system,and the CL-20-NBC/Al spherical com-plexes was prepared.The effects of oil-water ratio,material ratio,and surfactant dosage on the stability of the emulsion were investigated.And the structure,morphology,and thermal properties of the CL-20-NBC/Al composite energy-containing mate-rials were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),and differential scanning calorime-try(DSC).The results show that the CL-20-NBC/Al complexes prepared by Pickering emulsion can form a stable emulsion sys-tem when the oil-water ratio is controlled to be 4/6,the ratio of raw material CL-20/NBC to be 4/6,and the amount of sur-factant to be 10％of the raw material.The prepared CL-20-NBC/Al composite is a regular sphere with a smooth surface and a particle size distribution D50 of 27.4μm.At the same time,compared with the raw material CL-20,the heat release of CL-20-NBC/Al composites increases by 42％.The characteristic drop height increases from 13 cm to 40 cm.The explosion proba-bility of friction sensitivity decreases from 100％to 88％,and the mechanical safety performance is greatly improved.
维普
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