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Article

The Mechanical and Energy Release Performance of THV-Based Reactive Materials

1
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2
College of Mechatronic Engineering, North University of China, Taiyuan 030051, China
3
Science and Technology on Transient Impact Laboratory, No. 208 Research Institute of China Ordnance Industries, Beijing 102202, China
*
Authors to whom correspondence should be addressed.
Materials 2022, 15(17), 5975; https://doi.org/10.3390/ma15175975
Submission received: 13 July 2022 / Revised: 5 August 2022 / Accepted: 19 August 2022 / Published: 29 August 2022
(This article belongs to the Special Issue Materials under High Pressure)

Abstract

A polymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride- (THV) based reactive materials (RMs) was designed to improve their density and energy release efficiency. The mechanical performances, fracture mechanisms, thermal behavior, energy release behavior, and reaction energy of four types of RMs (26.5% Al/73.5% PTFE, 5.29% Al/80% W/14.71% PTFE, 62% Hf/38% THV, 88% Hf/12% THV) were systematically researched by conducting compressive tests, scanning electron microscope (SEM), differential scanning calorimeter, thermogravimetric (DSC/TG) tests and ballistic experiments. The results show that the THV-based RMs have a unique strain softening effect, whereas the PTFE-based RMs have a remarkable strain strengthening effect, which is mainly caused by the different glass transition temperatures. Thermal analysis indicates that the THV-based RMs have more than one exothermic peak because of the complex component in THV. The energy release behavior of RMs is closely related to their mechanical properties, which could dominate the fragmentation behavior of materials. The introduction of tungsten (W) particles to PTFE RMs could not only enhance the density but also elevate the reaction threshold of RMs, whereas the reaction threshold of THV-based RMs is decreased when increasing Hf particles content. As such, under current conditions, the THV-based RMs (88% Hf/12% THV) with a high density of 7.83 g/cm3 are adapted to release a lot of energy in thin, confined spaces.
Keywords: THV-based reactive materials; mechanical performances; thermal analysis; reaction threshold; energy release behavior THV-based reactive materials; mechanical performances; thermal analysis; reaction threshold; energy release behavior

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MDPI and ACS Style

Guo, M.; Wang, Y.; Wang, H.; Xiao, J. The Mechanical and Energy Release Performance of THV-Based Reactive Materials. Materials 2022, 15, 5975. https://doi.org/10.3390/ma15175975

AMA Style

Guo M, Wang Y, Wang H, Xiao J. The Mechanical and Energy Release Performance of THV-Based Reactive Materials. Materials. 2022; 15(17):5975. https://doi.org/10.3390/ma15175975

Chicago/Turabian Style

Guo, Mengmeng, Yanxin Wang, Haifu Wang, and Jianguang Xiao. 2022. "The Mechanical and Energy Release Performance of THV-Based Reactive Materials" Materials 15, no. 17: 5975. https://doi.org/10.3390/ma15175975

APA Style

Guo, M., Wang, Y., Wang, H., & Xiao, J. (2022). The Mechanical and Energy Release Performance of THV-Based Reactive Materials. Materials, 15(17), 5975. https://doi.org/10.3390/ma15175975

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