Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle Size
Al-PTFE (aluminum-polytetrafluoroethylene) serves as one among the most promising reactive materials (RMs). In this work, six types of Al-PTFE composites with different Al particle sizes (i.e., 50 nm, 1∼2 μm, 6∼7 μm, 12∼14 μm, 22∼24 μm, and 32∼34 μm) were prepared, and quasistatic compression and dr...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/2767563 |
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| author | Jia-xiang Wu Xiang Fang Zhen-ru Gao Huai-xi Wang Jun-yi Huang Shuang-zhang Wu Yu-chun Li |
| author_facet | Jia-xiang Wu Xiang Fang Zhen-ru Gao Huai-xi Wang Jun-yi Huang Shuang-zhang Wu Yu-chun Li |
| author_sort | Jia-xiang Wu |
| collection | DOAJ |
| description | Al-PTFE (aluminum-polytetrafluoroethylene) serves as one among the most promising reactive materials (RMs). In this work, six types of Al-PTFE composites with different Al particle sizes (i.e., 50 nm, 1∼2 μm, 6∼7 μm, 12∼14 μm, 22∼24 μm, and 32∼34 μm) were prepared, and quasistatic compression and drop weight tests were conducted to characterize the mechanical properties and reaction characteristics of Al-PTFE composites. The reaction phenomenon and stress-strain curves were recorded by a high-speed camera and universal testing machine. The microstructure of selected specimens was anatomized through adopting a scanning electron microscope (SEM) to correlate the mesoscale structural characteristics to their macroproperties. As the results indicated, in the case of quasistatic compression, the strength of the composites was decreased (the yield strength falling from 22.7 MPa to 13.6 MPa and the hardening modulus declining from 33.3 MPa to 25 MPa) with the increase of the Al particle size. The toughness rose firstly and subsequently decreased and peaked as 116.42 MJ/m3 at 6∼7 μm. The reaction phenomenon occurred only in composites with the Al particle size less than 10 μm. In drop weight tests, six types of specimens were overall reacted. As the Al particle size rose, the ignition energy of the composites enhanced and the composites turned out to be more insensitive to reaction. In a lower strain rate range (10−2·s−1∼102·s−1), Al-PTFE specimens take on different mechanical properties and reaction characteristics in the case of different strain rates. The formation of circumferential open cracks is deemed as a prerequisite for Al-PTFE specimens to go through a reaction. |
| format | Article |
| id | doaj-art-3cf6ed9517274737bb8754be6f1b085e |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-3cf6ed9517274737bb8754be6f1b085e2025-02-03T05:54:06ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/27675632767563Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle SizeJia-xiang Wu0Xiang Fang1Zhen-ru Gao2Huai-xi Wang3Jun-yi Huang4Shuang-zhang Wu5Yu-chun Li6College of Field Engineering, PLA Army Engineering University, Hou Biaoying Road No. 88, Nanjing, Jiangsu 210007, ChinaCollege of Field Engineering, PLA Army Engineering University, Hou Biaoying Road No. 88, Nanjing, Jiangsu 210007, ChinaCollege of Field Engineering, PLA Army Engineering University, Hou Biaoying Road No. 88, Nanjing, Jiangsu 210007, ChinaCollege of Field Engineering, PLA Army Engineering University, Hou Biaoying Road No. 88, Nanjing, Jiangsu 210007, ChinaCollege of Field Engineering, PLA Army Engineering University, Hou Biaoying Road No. 88, Nanjing, Jiangsu 210007, ChinaCollege of Field Engineering, PLA Army Engineering University, Hou Biaoying Road No. 88, Nanjing, Jiangsu 210007, ChinaCollege of Field Engineering, PLA Army Engineering University, Hou Biaoying Road No. 88, Nanjing, Jiangsu 210007, ChinaAl-PTFE (aluminum-polytetrafluoroethylene) serves as one among the most promising reactive materials (RMs). In this work, six types of Al-PTFE composites with different Al particle sizes (i.e., 50 nm, 1∼2 μm, 6∼7 μm, 12∼14 μm, 22∼24 μm, and 32∼34 μm) were prepared, and quasistatic compression and drop weight tests were conducted to characterize the mechanical properties and reaction characteristics of Al-PTFE composites. The reaction phenomenon and stress-strain curves were recorded by a high-speed camera and universal testing machine. The microstructure of selected specimens was anatomized through adopting a scanning electron microscope (SEM) to correlate the mesoscale structural characteristics to their macroproperties. As the results indicated, in the case of quasistatic compression, the strength of the composites was decreased (the yield strength falling from 22.7 MPa to 13.6 MPa and the hardening modulus declining from 33.3 MPa to 25 MPa) with the increase of the Al particle size. The toughness rose firstly and subsequently decreased and peaked as 116.42 MJ/m3 at 6∼7 μm. The reaction phenomenon occurred only in composites with the Al particle size less than 10 μm. In drop weight tests, six types of specimens were overall reacted. As the Al particle size rose, the ignition energy of the composites enhanced and the composites turned out to be more insensitive to reaction. In a lower strain rate range (10−2·s−1∼102·s−1), Al-PTFE specimens take on different mechanical properties and reaction characteristics in the case of different strain rates. The formation of circumferential open cracks is deemed as a prerequisite for Al-PTFE specimens to go through a reaction.http://dx.doi.org/10.1155/2018/2767563 |
| spellingShingle | Jia-xiang Wu Xiang Fang Zhen-ru Gao Huai-xi Wang Jun-yi Huang Shuang-zhang Wu Yu-chun Li Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle Size Advances in Materials Science and Engineering |
| title | Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle Size |
| title_full | Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle Size |
| title_fullStr | Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle Size |
| title_full_unstemmed | Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle Size |
| title_short | Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle Size |
| title_sort | investigation on mechanical properties and reaction characteristics of al ptfe composites with different al particle size |
| url | http://dx.doi.org/10.1155/2018/2767563 |
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