Trans-scale study on the thermal response and initiation of ternary fluoropolymer-matrix reactive materials under shock loading  

作　　者：Chao Ge Die Hu Jin Wang Qingbo Yu Haifu Wang Yuanfeng Zheng 

机构地区：[1]School of Mechatronical Engineering,Beijing Institute of Technology,Beijing,100081,China

出　　处：《Defence Technology（防务技术）》2023年第3期184-195,共12页Defence Technology

基　　金：support received from the Beijing Municipal Natural Science Foundation(Grant No.1214022).

摘　　要：To investigate the thermal response and initiation behavior of ternary fluoropolymer-matrix PTFE/Al/W reactive materials,a research combining shock loading tests and trans-scale modelling is conducted.On the basis of a good agreement of the numerically simulated and tested shock wave propagation,the significant impact of component ratios and particle sizes on the evolution of mesoscopic temperature,hot-spots and initiation is well characterized and analyzed.Results demonstrate that as the content of W increases,the range of mesoscopic high-temperature area increases and tends to distribute more uniform,while material with smaller W particles causes more intense particle deformation and larger temperature rise.The time to reach the critical temperature shows positive correlation to the content of W,while the critical temperature of hot-spots shows negative correlation to the particle size of W.For PTFE/Al/W of high density,with the increase of W particle size,the reaction rate decrease,however the time to reach the peak reaction rate shortens.

关 键 词：deformation shock loading 

分 类 号：TQ317[化学工程—高聚物工业]