| 活性材料PTFE/Al动态压缩性能 |
| |
| 引用本文： | 赵鹏铎,卢芳云,李俊玲,陈荣,徐松林,阳世清. 活性材料PTFE/Al动态压缩性能[J]. 含能材料, 2009, 17(4): 459-462. DOI: 10.3969/j.issn.1006-9941.2009.04.020 |
| |
| 作者姓名： | 赵鹏铎 卢芳云 李俊玲 陈荣 徐松林 阳世清 |
| |
| 作者单位： | 1. 国防科技大学理学院,湖南,长沙,410073
2. 国防科技大学航天材料与工程学院,湖南,长沙,410073 |
| |
| 基金项目： | 国家自然科学基金资助 |
| |
| 摘 要： | 采用分离式霍普金森压杆(SHPB)实验技术,研究两种不同配比的聚四氟乙烯/铝(PTFE/Al)活性材料(PA265和PA35)在高应变率下的力学压缩性能与加载反应性能,对比分析了铝含量不同对PTFE/Al活性材料的屈服强度,破坏性能,反应性能的影响.研究结果表明: 两种PTFE/Al活性材料存在应变率效应,在应变率1000～8000 s-1范围,PA265的屈服应力为32～44 MPa,PA35的屈服应力为40～55 MPa.铝含量越高,PTFE/Al的屈服强度越高; 在应变率3100～5800 s-1范围内,两种材料的破坏应力基本相同,约为143～153 MPa; PA265和PA35的临界反应应力分别为157,163 MPa; 铝粉含量不能高于35%,否则由于缺少足够的氧化剂(PTFE)而普遍出现不完全燃烧反应的现象.
|
| 关 键 词： | 爆炸力学 分离式霍普金森压杆(SHPB) 高应变率 活性材料 聚四氟乙烯(PTFE) |
| 收稿时间： | 2008-12-17 |
| 修稿时间： | 2009-03-03 |
The Dynamic Compressive Properties of PTFE/Al Reactive Materials |
| |
| ZHAO Peng-duo,LU Fang-yun,LI Jun-ling,CHEN Rong,XU Song-lin and YANG Shi-qing. The Dynamic Compressive Properties of PTFE/Al Reactive Materials[J]. Chinese Journal of Energetic Materials, 2009, 17(4): 459-462. DOI: 10.3969/j.issn.1006-9941.2009.04.020 |
| |
| Authors: | ZHAO Peng-duo LU Fang-yun LI Jun-ling CHEN Rong XU Song-lin YANG Shi-qing |
| |
| Affiliation: | College of Science, National University of Defense Technology, Changsha 410073, China;College of Science, National University of Defense Technology, Changsha 410073, China;College of Science, National University of Defense Technology, Changsha 410073, China;College of Science, National University of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China |
| |
| Abstract: | The dynamic compressive and reactive properties of two kinds of PTFE/Al reactive materials were studied by the split Hopkinson pressure bars (SHPB). The effects of Al content on yield stress, fragmented and reactive properties of PTFE/Al reactive materials were analyzed. Results show that PTFE/Al is sensitive to the strain rate. In the strain rate range of 1000-8000 s-1, the yield stress of PA265 is 32-44 MPa and the yield stress of PA35 is 40-55 MPa; the yield stress increases with Al content; the fragmented stress is 143-153 MPa in the strain rate range of 3100-5800 s-1 for the PTFE/Al reactive materials; the critical reactive stresses of PA265 and PA35 are 157 MPa and 163 MPa; partial reaction phenomena appear frequently due to lacking of enough oxidant polytetrafluorethylene (PTFE), if Al content is higher than 35%. |
| |
| Keywords: | explosion mechanics split Hopkinson pressure bar (SHPB) high strain rate reactive materials polytetrafluorethylene (PTFE) |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《含能材料》浏览原始摘要信息 |
|
点击此处可从《含能材料》下载全文 |
|
