聚合物基活性材料冲击起爆性能研究

As an emerging impact-initiated energetic material technology, reactive material promotes damage power of munitions and warheads substantialy even leap-forwardly. The previous research work both at broad and home on reactive materials mainly focus on formulation and preparation,but very little involes to initiation theory or mechanism. this project is based on the impact-initiated performance of reactive material that is made of polymer binder and consolidated via press/sintering process ,the main research contents are as follows:(1) to investigate the mechanism of the occurrence and propagating process of impact-initiated reaction and confirm the primary determinant of impact-initiated reaction;(2)to study the effects of component, formulation, particle size and preparation of reactive material on critical threshold of impact-initiated reaction and establish corresponding relationship between the threshold and each influencing factor respectively;(3)to study the effects of quality of reactive material, length-diameter ratio, material type and thickness of target plate on energy release characteristics of reactive material and establish the relation between reactive material parameters and impact-initiated parameters and energy release parameter . these research results is of great significane for the development and popularization of reactive material.

活性材料技术是一种新兴的撞击起爆含能材料技术，可使弹药战斗部毁伤威力获得大幅度甚至跨越性提升。目前国内外研究主要集中在活性材料配方及制备等方面，在活性材料撞击起爆机理方面的理论性、基础性研究工作甚少。本项目针对聚合物基烧结硬化活性材料撞击起爆性能开展研究，主要研究内容为：（1）从机理上揭示活性材料撞击起爆发生、发展过程，确定活性材料发生撞击起爆的主控因素；（2）研究组分、配比、粉体粒度及制备工艺等因素对活性材料撞击起爆阈值的影响规律，建立活性材料撞击起爆阈值与各影响因素间的对应关系；（3）研究活性材料质量、长径比、靶板材料和厚度等因素对活性材料能量输出特性的影响，建立活性材料参数、撞击起爆参数和能量输出参数间的内在联系。本项目的研究成果对活性材料发展和应用推广具有重要意义。

活性材料技术是一种新兴的撞击起爆含能材料技术，可使弹药战斗部毁伤威力获得大幅度甚至跨越性提升。目前国内外研究主要集中在活性材料配方及制备等方面，在活性材料撞击起爆机理方面的理论性、基础性研究工作甚少。本项目针对聚合物基烧结硬化活性材料撞击起爆性能开展研究，通过准静态力学和电镜扫描分析，获得了配方与密度对活性材料力学性能的影响。在撞击起爆实验基础上，分析了活性材料撞击起爆发生、发展过程，确定了活性材料发生撞击起爆的主控因素。基于圆柱形活性材料弹丸正碰撞不同厚度LY-12硬铝靶的撞击起爆阈值、弹道极限速度、穿孔破坏模式及平均穿孔尺寸实验结果，得到了活性材料弹丸正碰撞铝靶的撞击起爆阈值、弹道极限速度预测关系，并分析了铝靶厚度对活性材料弹丸相对于钢弹丸侵彻行为及性能的影响。建立了活性材料能量释放特性测试方法，并通过一系列实验，获得了最大超压与碰撞速度关系。基于碎裂及一维应力波理论，建立了活性材料碰撞碎裂平均尺寸与反应率预测模型，给出了碰撞速度、平均碎裂尺寸与反应率之间关系。