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对目前国内冲压发动机进气道堵盖材料存在的抛出物尺寸大、作用时间长且结构复杂等问题,选用具有特殊三维网状结构的多孔铜,通过在孔内填充含能药剂得到含能基体;从含能基体爆炸性能及力学性能方面,探讨了不同添加剂比例及不同固化方式对含能基体爆速、总作用时间以及抗压能力的影响,最终得到一种具有明显优势的堵盖材料。结果表明:成型后的含能基体抗压能力达到13MPa,爆速为3 026m/s,作用时间不超过30μs,能被可靠起爆,同时残渣粒径小于1mm。将其作为固冲发动机进气道堵盖材料具有突出优势。
At present, there is a problem that the size of the thrown material in the inlet blockage of the ramjet engine is large, the action time is long and the structure is complicated. The porous copper with a special three-dimensional network structure is selected, and the energy content is obtained by filling the energy- The influences of the ratio of different additives and different curing methods on the detonation velocity, total action time and compressive strength of the energy-containing matrix were discussed from the aspects of explosive performance and mechanical properties of the energy-containing matrix. Finally, a plugging material with obvious advantages was obtained. The results show that the compressive capability of the molded energy matrix reaches 13MPa, the detonation velocity is 3 026m / s, the action time is less than 30μs, and the detonation can be reliably detonated with the particle size less than 1mm. It has outstanding advantages as a solid impulse engine intake blocking material.