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多孔聚四氟乙烯/铝/钨反应材料的堆积密度均匀化及冲击起爆特性

Bulk Density Homogenization and Impact Initiation Characteristics of Porous PTFE/Al/W Reactive Materials.

作者信息

Geng Baoqun, Wang Haifu, Yu Qingbo, Zheng Yuanfeng, Ge Chao

机构信息

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China.

出版信息

Materials (Basel). 2020 May 15;13(10):2271. doi: 10.3390/ma13102271.

DOI:10.3390/ma13102271
PMID:32429043
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7287859/
Abstract

In this research, the bulk density homogenization and impact initiation characteristics of porous PTFE/Al/W reactive materials were investigated. Cold isostatic pressed (CIPed) and hot temperature sintered (HTSed) PTFE/Al/W reactive materials of five different theoretical maximum densities were fabricated via the mixing/pressing/sintering process. Mesoscale structure characteristics of the materials fabricated under different molding pressures were compared while the effect of molding pressures on material bulk densities was analyzed as well. By using the drop weight testing system, effects of the theoretical maximum densities (TMDs), drop heights and molding pressures on the impact initiation characteristics were studied. Quantitatively, characteristic drop heights () for different types of materials were obtained. The two most significant findings of this research are the density homogenization zone and the sensitivity transition zone, which would provide meaningful guides for further design and fabrication of reactive materials.

摘要

本研究对多孔聚四氟乙烯/铝/钨（PTFE/Al/W）反应材料的堆积密度均匀化和冲击起爆特性进行了研究。通过混合/压制/烧结工艺制备了五种不同理论最大密度的冷等静压（CIPed）和高温烧结（HTSed）PTFE/Al/W反应材料。比较了不同成型压力下制备材料的细观结构特征，并分析了成型压力对材料堆积密度的影响。利用落锤试验系统，研究了理论最大密度（TMDs）、落高和成型压力对冲击起爆特性的影响。定量地获得了不同类型材料的特征落高（）。本研究的两个最重要发现是密度均匀化区和灵敏度过渡区，这将为反应材料的进一步设计和制造提供有意义的指导。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/e16a9d1af3c1/materials-13-02271-g013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/8183b0b39fde/materials-13-02271-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/8f548bf8e17e/materials-13-02271-g008a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/95b41a108610/materials-13-02271-g009a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/8fba56b7a658/materials-13-02271-g010a.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/874b6d2418c6/materials-13-02271-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/e16a9d1af3c1/materials-13-02271-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/dfd323701b6c/materials-13-02271-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/a7a5c4c58308/materials-13-02271-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/30855c69f316/materials-13-02271-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/1443e3546821/materials-13-02271-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/dc4eb38e7afb/materials-13-02271-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/1226e1b1d2cb/materials-13-02271-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/8183b0b39fde/materials-13-02271-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/8f548bf8e17e/materials-13-02271-g008a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/95b41a108610/materials-13-02271-g009a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/8fba56b7a658/materials-13-02271-g010a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/7cc866d9b2b9/materials-13-02271-g011a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/874b6d2418c6/materials-13-02271-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b74e/7287859/e16a9d1af3c1/materials-13-02271-g013.jpg

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