Reaction properties of Al-teflon with different particle sizes under laser ablation

DING Tong; GUO Wencan; ZHANG Xu; WANG Zhongmiao; ZHENG Xianxu; LIU Cangli

doi:10.11883/bzycj-2019-0023

Volume 39 Issue 4

Mar. 2019

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Article Navigation > Explosion And Shock Waves > 2019 > 39(4): 041402

DING Tong, GUO Wencan, ZHANG Xu, WANG Zhongmiao, ZHENG Xianxu, LIU Cangli. Reaction properties of Al-teflon with different particle sizes under laser ablation[J]. Explosion And Shock Waves, 2019, 39(4): 041402. doi: 10.11883/bzycj-2019-0023

Citation:

DING Tong, GUO Wencan, ZHANG Xu, WANG Zhongmiao, ZHENG Xianxu, LIU Cangli. Reaction properties of Al-teflon with different particle sizes under laser ablation[J]. Explosion And Shock Waves, 2019, 39(4): 041402. doi: 10.11883/bzycj-2019-0023

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Reaction properties of Al-teflon with different particle sizes under laser ablation

doi: 10.11883/bzycj-2019-0023

1.
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China
2.
China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

Received Date: 2019-01-21
Rev Recd Date: 2019-03-18

Available Online: 2019-04-25

Publish Date: 2019-04-01

Abstract

Abstract

In order to study reaction properties of Al-teflon with different particle sizes, we prepared Al-teflon reactive material powders by mixing Al powder with particle sizes of 25 μm, 1 μm, and 20-200 nm, where micron-sized teflon powder as raw materials. The laser ablation experiments of Al-teflon reactive material were performed by a pulsed laser system. The self-luminescence imaging and emission spectra in the reaction process were collected and analyzed by ICCD camera and spectrometer. The results show that the reaction properties of Al-teflon reactive material under laser ablation reflect the characteristics of typical secondary reactions, together with continuous combustion characteristics and obvious afterburning effects, and the total energy release time is long. At the same time, the reaction properties is closely related to the particle size of Al powder. As the particle size of Al powder decreases, the reaction becomes more violently in the initial reaction stage. As the reaction progresses, the subsequent reaction capability of the corresponding reactive material with nano-Al size powder gradually decreases, the reaction intensity and reaction time are not as good as the corresponding reaction materials of 1 μm size aluminum powder.
- laser ablation,
- Al-teflon,
- particle size,
- reaction properties

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