PTFE/Al/CuO冲击激发反应材料性能分析

Performance analysis of PTFE/Al/CuO impact-initiated energetic materials

反应材料是一种由冲击引发的新型含能材料,其独特的力学和释能特性使其具有重要的应用前景。通过力学实验技术,分析一种基于压实烧结工艺制备的反应材料的组分和颗粒尺寸对材料性能的影响。在室温下利用万能材料试验机,得到不同配比反应材料的准静态压缩应力应变曲线。结果显示,未烧结的反应材料性能主要取决于(聚四氟乙烯)PTFE,烧结后的反应材料随着铜铝热剂含量增加屈服强度呈现先增加而后减小的变化趋势。采用纳米颗粒PTFE时,反应材料在烧结过程中容易发生反应,使得烧结后的反应材料强度反而弱于未烧结的。此外,还通过落锤实验观察分析了反应材料的发火能力。发现添加铜铝热剂有助于提升反应材料的反应能力,且采用纳米PTFE材料后也有助于提升材料反应能力。

Reaction material is a new energetic material caused by shock.Its unique mechanical and energy release characteristics are important parts of its application.The influence of composition and particle size on the material properties of a reaction material prepared by compacted sintering method is analyzed by mechanical experiment technology.The quasi-static stress-strain curves of different materials were obtained at room temperature by universal material testing machine.The results show that the properties of the unsintered materials are mainly related to the PTFE,and the yield strength of the sintered materials increases first and then decreases with the increase of the content of the copper thermites.When nano particle PTFE is used,the material is easy to react during sintering process,and the strength of sintered material is weaker than that of unsintered material.Meanwhile,the reaction ability of the reaction material was observed by drop hammer test.Adding copper thermites can help to enhance the reactivity of the reaction materials.Nano PTFE material also improves the material response ability.