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Thermal Characteristics Enhancement of AN/Mg/NC Composite Using Activated Carbon/Cobalt Oxide as Highly Effective Catalytic Additive.
- Source :
- Journal of Composites Science; Nov2023, Vol. 7 Issue 11, p471, 15p
- Publication Year :
- 2023
-
Abstract
- Our study examined the potential of using activated carbon/nanosized cobalt oxide (AC-Co<subscript>3</subscript>O<subscript>4</subscript>) as a new catalytic additive to improve the efficiency of the parent ammonium nitrate/magnesium/nitrocellulose (AN/Mg/NC) composite. These findings demonstrate a significant improvement in the thermal characteristics of AN/Mg/NC/AC-Co<subscript>3</subscript>O<subscript>4</subscript> compared to the initial AN/Mg/NC. Raman spectra confirmed the multilayered nature of AC. Fourier-transform infrared spectroscopy (FTIR) analysis confirmed the presence of cobalt oxide in the synthesized additive. Differential scanning calorimetry (DSC) revealed the catalytic effect of AC-Co<subscript>3</subscript>O<subscript>4</subscript> on the AN/Mg/NC composite, resulting in the reduction in the decomposition peak temperature (T<subscript>max</subscript>) from 277.4 °C (for AN/Mg/NC) to 215.2 °C (for AN/Mg/NC/AC-Co<subscript>3</subscript>O<subscript>4</subscript>). Thermal gravimetric analysis (TG) determined the overall mass losses (%) for AN/Mg/NC (70%), AN/Mg/NC/AC (75%), and AN/Mg/NC/AC-Co<subscript>3</subscript>O<subscript>4</subscript> (80%). This analysis highlights the significant role of AC-Co<subscript>3</subscript>O<subscript>4</subscript> in enhancing the energy release during decomposition. Moreover, the use of the differential thermogravimetric (DTG) technique demonstrated the two-step decomposition pathways attributed to the multi-component system. Finally, the combustion tests under the pressure of 3.5 MPa validated the catalytic efficiency of the AC-Co<subscript>3</subscript>O<subscript>4</subscript> additive, which enhanced the burning rate (r<subscript>b</subscript>) of the AN/Mg/NC/AC-Co<subscript>3</subscript>O<subscript>4</subscript> composite from 10.29 to 19.84 mm/s compared to the initial AN/Mg/NC composite. The advantageous nature of the AN/Mg/NC/AC-Co<subscript>3</subscript>O<subscript>4</subscript> composite with a lowered decomposition temperature can be applied in rocket propulsion systems, where the precise control of combustion and ignition processes is crucial. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 2504477X
- Volume :
- 7
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Journal of Composites Science
- Publication Type :
- Academic Journal
- Accession number :
- 173825094
- Full Text :
- https://doi.org/10.3390/jcs7110471