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High energy core-shell Al@PVDF/AP composites with enhanced combustion efficiency by doping of graphene-based carbohydrazide complexes as catalysts.
- Source :
-
Fuel . Dec2022, Vol. 330, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- • There graphene-based transition metal coordination polymers have been evaluated as the energetic catalysts in Al-based composites. • These catalysts are well doped in the PVDF/AP matrix as the oxidizer shell of Al-based composites prepared by a spray drying method. • The high energy level but low burn rate has been achieved for the Al@PVDF/AP in presence of these graphene-based catalysts. In this paper, energetic combustion catalysts doped core–shell Al@PVDF/AP composites have been fabricated via a spray-drying method, where three kinds of graphene-based energetic coordination polymers (GECPs, GO-CHZ-Co, GO-CHZ-Ni and GO-CHZ-Cu) are employed. These composites have been characterized comprehensively in terms of morphologies, thermal decomposition behaviors, energy density, combustion performances and condensed combustion products (CCPs). The results show that the GO-CHZ-Co and GO-CHZ-Cu could increases the heat of explosion for Al@PVDF/AP composites from 6885.2 J·g−1 to 7491.0 J·g−1 and 7390.1 J·g−1, respectively, which are 8.8 % and 7.3 % higher than the blank reference samples. Moreover, the burn rates for these composites decrease when GO-CHZ-Co or GO-CHZ-Ni is included, indicating that these composites are promising candidates with improved energy density even unusually with decreased burn rates. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00162361
- Volume :
- 330
- Database :
- Academic Search Index
- Journal :
- Fuel
- Publication Type :
- Academic Journal
- Accession number :
- 159329987
- Full Text :
- https://doi.org/10.1016/j.fuel.2022.125592