材料科学
复合材料
起爆
压缩(物理)
休克(循环)
惰性
聚四氟乙烯
中尺度气象学
冲击波
分解
惰性气体
燃烧
机械
爆炸物
化学
地质学
有机化学
内科学
物理
医学
气候学
作者
Xiang-li Yang,Yong He,Yuan He,Chuan Ting Wang,Jie Zhou
标识
DOI:10.1016/j.dt.2020.11.020
摘要
The responses of Al/PTFE reactive materials (RMs) under shock compression were investigated by a single-stage gas gun. A 3D mesoscale-model was established based on micro-computed tomography (micro-CT) slice images and confirmed with experimental results. In the high-pressure stage, the composites reacted partially, whereas there were no deviations between the partially reacted Hugoniot and the inert simulation results. The simulation reveals that the Teflon matrix melting on the high shock pressure. Melts and decomposition of the PTFE accelerated the diffusion of the atoms. Thus, the reactions of the Al/PTFE composites are more like a combustion rather than a detonation.
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