ZrH_(2)填充改性Al/PTFE的力学响应与毁伤性能  

Mechanical Response and Damage Performances of Al/PTFE filled with ZrH_(2)

作　　者：张军[1,2] 吴家祥 任鑫鑫 姚淼 武双章 黄骏逸 李裕春 ZHANG Jun;WU Jia-xiang;REN Xin-xin;YAO Miao;WU Shuang-zhang;HUANG Jun-yi;LI Yu-chun(78102 Troop of PLA,ChengDu 610031,China;Field Engineering Institute,PLA Army Engineering University,Nanjing 210007,China)

机构地区：[1]中国人民解放军78102部队,四川成都610031 [2]陆军工程大学野战工程学院,江苏南京210007

出　　处：《含能材料》2021年第5期428-433,I0007,共7页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金(51673213)。

摘　　要：为了研究ZrH_(2)对Al/PTFE反应材料力学响应与毁伤性能的影响,采用冷压烧结工艺制备了Al/ZrH_(2)/PTFE、Al/PTFE和纯PTFE三种材料的圆柱体与药型罩试件,通过准静态压缩、落锤冲击和高速撞靶实验,对三种材料的力学性能、撞击感度与撞靶毁伤效能进行了对比研究。实验结果表明:三种PTFE基材料均为弹塑性材料,都存在应变硬化效应,质量分数为10%的ZrH_(2)能提高Al/PTFE反应材料的力学强度,使其屈服强度与失效应力分别达到22.2 Mpa与93.3 Mpa,也可降低材料撞击感度,使其点火激发能增加1.93 J,并通过活化分解参与反应保证材料能量释放水平不受影响。两种含能药型罩在撞靶过程中能发生撞击释能反应,产生穿/扩孔综合效应,形成花瓣式外翻的穿孔形式,与惰性毁伤元相比,反应材料的撞击-反应双重毁伤效应能大幅提升其扩孔能力,在Al/PTFE反应材料中引入适量添加剂ZrH_(2),能进一步增强材料的撞靶毁伤效能。In order to study the influences of ZrH_(2) onto mechanical properties and damage performances of Al/PTFE,both cylinder and liner specimens of Al/ZrH_(2)/PTFE,Al/PTFE and pure PTFE were prepared by cold-pressing sintering process.The mechanical properties,impact sensitivity and damage efficiency of the three materials were contrastively studied by the tests of quasi-static compression,drop-weight impact and high-speed target impact.The experimental results showed that all three kinds of PTFE-based materials exhibited elastic-plastic mechanical behaviors and strain hardening effects.Adding a mass fraction of 10%of ZrH_(2) into Al/PTFE reactive material improved its yield strength and failure stress to 22.2 MPa and 93.3 MPa,respectively,increased its ignition excitation energy by 1.93 J,and participated in the reaction through activation and decomposition to ensure that its energy release level was not weakened.The two kinds of energetic liners can produce collision energy release reaction and perforation/pore enlargement sympathetic effects during its impacting process,and formed the perforation pattern of petal valgus.Compared with inert damage element,the reactive material greatly improved its hole-enlargement ability by the im-pact-reaction double damage effect.The introduction of ZrH_(2) into Al/PTFE reactive material can further enhance the damage efficiency of the material.

关 键 词：填充改性 Al/PTFE反应材料 准静态压缩 落锤冲击 高速撞靶 力学响应 毁伤性能 

分 类 号：TJ450[兵器科学与技术—火炮、自动武器与弹药工程]