Abstract
The application of fluoropolymers in energetic materials has attracted increasing attention. The effect of poly(vinylidene difluoride) (PVDF) content on thermal reaction and combustion performance of MnO2-Al nanothermite was reported. Nanothermite samples were prepared by electrospray with the content of PVDF from 0 wt.% to 30 wt.%. Thermal reaction processes influenced by PVDF content were tested by simultaneous thermal analysis (TG-DSC). Finally, ignition threshold tests were designed, and combustion processes were recorded. The results showed that the components of nanothermite materials were evenly distributed and stable. The content of PVDF had a significant influence on thermal reaction process, which is divided into four stages. Ignition threshold was represented by value of instantaneous ignition current. With the increase of PVDF content, ignition threshold decreased first and then tended to a stable value. Besides, PVDF content had important effects on the combustion speed of the samples. This work has practical significance for designing thermite-based ignition propellant.
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Funding
This research was funded by Science and Technology on Applied Physical Chemistry Laboratory, Grant No. WDYX22614260210 and Qin Chuangyuan talent project in Shanxi Province, Grant No. QCYRCXM-2022-274.
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Chen, J., Li, S., Song, J. et al. Effect of Poly(Vinylidene Difluoride) Content on Thermal Reaction and Combustion Performance of MnO2-Al Nanothermite. JOM 76, 3823–3831 (2024). https://doi.org/10.1007/s11837-024-06598-z
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DOI: https://doi.org/10.1007/s11837-024-06598-z