Skip to Main content Skip to Navigation
Journal articles

New coordination complexes-based gas-generating energetic composites

Abstract : To reduce the size inconvenience of airbag systems employed in human-body protection devices while maintaining comparable gas generation performance, a new family of gas-generating energetic composites are proposed mixing Al/CuO nanothermite with copper complex (Cu(NH3)4(NO3)2) known for its propensity to generate gases (0.03 mol/g) such as N 2 , O 2 , N 2 O through exothermic chemical decomposition (300 J/g). The aluminum (Al)/Copper oxide (CuO) couple, known as the most widely studied nanomaterial for thermite reactions, releasing a high energy, mostly heat, through chemical reaction, is employed as a source of heat to trigger and sustain the decomposition of Cu(NH3)4(NO3)2 complex. This work permits developing a new family of gas-generating energetic composites that takes advantage of specific chemical and thermal properties of both materials. We demonstrate its capability to tune the pressurization rate, burn rate and pressure peak by varying the Al/CuO over Cu(NH3)(NO2)2 mass ratio. The peak pressure of Cu(NH3)4(NO3)2/Al/CuO energetic composites reaches 12 MPa/g.cm 3 in a close volume, which is 3.3 2 higher than that of traditional Al/CuO nanothermite. They achieve much longer high-pressure duration (~ 30 ms). They also exhibit very intense burning with velocity reaching hundreds of m/s in opening burning experiments. These new materials appear very promising for green gas generation.
Document type :
Journal articles
Complete list of metadatas

Cited literature [38 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02895505
Contributor : Carole Rossi <>
Submitted on : Friday, July 10, 2020 - 10:53:48 AM
Last modification on : Thursday, August 20, 2020 - 10:28:26 AM

File

Final Draft_CuC-Al-CuO (1).pdf
Files produced by the author(s)

Identifiers

Citation

Tao Wu, Florent Sevely, Baptiste Julien, Felipe Sodre, Jérémy Cure, et al.. New coordination complexes-based gas-generating energetic composites. Combustion and Flame, Elsevier, 2020, 219, pp.478-487. ⟨10.1016/j.combustflame.2020.05.022⟩. ⟨hal-02895505⟩

Share

Metrics

Record views

123

Files downloads

84