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Advances in Materials Science and Engineering
Volume 2015 (2015), Article ID 582320, 6 pages
Research Article

Reactions of Al-PTFE under Impact and Quasi-Static Compression

College of Field Engineering, PLA University of Science and Technology, Hou Biaoying Road No. 88, Nanjing, Jiangsu 210007, China

Received 13 July 2015; Accepted 21 September 2015

Academic Editor: Ying Li

Copyright © 2015 Bin Feng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Conventionally, the Al-PTFE is thought to be inert under quasi-static or static loads. However, here we reported an initiation phenomenon of Al-PTFE under quasi-static compression. Quasi-static tests suggest that reacted Al-PTFE samples had much higher toughness than unreacted samples. Dynamic test showed that the energy level needed to initiate the material was similar for quasi-static compression (88–100 J) and dynamic impact (77–91 J). The difference in density indicates that unreacted Al-PTFE has a higher crystallinity, which leads to the lower toughness. SEM images show numerous PTFE fibrils in unreacted composites which made the sample harder to crack and initiate.