Evaluation of Nano-Co sub(3)O sub(4) in HTPB-Based Composite Propellant Formulations

Different propellant compositions were prepared by incorporating nano-sized cobalt oxide from 0.25% to 1% in HTPB/AP/Al-based composite propellant formulations with 86% solid loading. The effects on viscosity build-up, thermal, mechanical and ballistic properties were studied. The findings revealed...

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Bibliographic Details
Published in:Propellants, explosives, pyrotechnics explosives, pyrotechnics, 2016-04, Vol.41 (2), p.304-311
Main Authors: Kshirsagar, Dhirendra R, Jain, Sunil, Jawalkar, Shekhar N, Naik, Nilesh H, Pawar, Suman, Maurya, Mehilal
Format: Article
Language:English
Subjects:
Accumulation
Composite propellants
Formulations
Nanostructure
Propellants
Reduction
Thermal properties
Viscosity
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Summary:Different propellant compositions were prepared by incorporating nano-sized cobalt oxide from 0.25% to 1% in HTPB/AP/Al-based composite propellant formulations with 86% solid loading. The effects on viscosity build-up, thermal, mechanical and ballistic properties were studied. The findings revealed that by increasing the percentage of nano-Co sub(3)O sub(4) in the composition, the end of mix viscosity, the modulus and the tensile strength increased, whereas the elongation decreased accordingly. The thermal property data envisaged a reduction in the decomposition temperature of ammonium perchlorate (AP) as well as formulations based on AP. The ballistic property data revealed an enhanced burning rate from 6.11mms super(-1) (reference composition) to 8.99mms super(-1) at 6.86MPa and a marginal increase in pressure exponent from 0.35 (reference composition) to 0.42 with 1% nano-cobalt oxide.
ISSN:0721-3115
1521-4087
DOI:10.1002/prep.201500158