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- W2902477680 abstract "NaIO4-encapsulated nanoAl nanothermites without additives were produced by a one-step spray-drying method under the temperature of 80 °C. This approach enables the NaIO4 matrix to completely cover Al nanoparticles, which are finally fabricated into NaIO4-encapsulated Al nanothermite. Differential scanning calorimetry revealed that the obtained NaIO4-encapsulated nanoAl released a heat of 1415.7 J g−1, which is more than that of Al/CuO (1069 J g−1) nanothermite. The burning rate of the NaIO4-encapsulated nanoAl nanothermite was found to be almost six times higher than that of Al/CuO. At the same time, the new nanothermite system also demonstrated a high pressurization rate of 2.94 GPa s−1 with a transient peak pressure of 5.66 MPa, as well as a rapid release of gases which was nearly three times higher than that of Al/CuO and two times higher than that of Al/NaIO4 (by physical mixing) and Al/Fe2O3 nanothermite. More importantly, the NaIO4-encapsulated nanoAl obtained by spray drying exhibits lower activity energy compared to Al/NaIO4 prepared by physically mixing method due to the higher degree of intermixing between fuel and oxidizer. The electrostatic sensitivity threshold of the NaIO4-encapsulated nanoAl is obviously higher than that of n-Al/CuO and Al/Fe2O3. In this paper, NaIO4-encapsulated nanoAl was used to directly initiate pentaerythritol tetranitrate, the initiating ability is greater than lead styphnate and close to lead azide. These results provide a feasible design scheme for replacing lead-based primary explosives because of the initiation power and process simplicity of thermites." @default.
- W2902477680 created "2018-12-11" @default.
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- W2902477680 date "2019-03-01" @default.
- W2902477680 modified "2023-10-13" @default.
- W2902477680 title "Facile production of NaIO4-encapsulated nanoAl microsphere as green primary explosive and its thermodynamic research" @default.
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- W2902477680 doi "https://doi.org/10.1016/j.cej.2018.11.215" @default.
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