Premium
Differential Scanning Calorimetric Study of HTPB based Composite Propellants in Presence of Nano Ferric Oxide
Author(s) -
Patil Prajakta R.,
Krishnamurthy V. N.,
Joshi Satyawati S.
Publication year - 2006
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.200600059
Subject(s) - ammonium perchlorate , differential scanning calorimetry , thermal decomposition , materials science , ferric , scanning electron microscope , oxide , propellant , composite number , chemical engineering , chemistry , composite material , organic chemistry , metallurgy , physics , engineering , thermodynamics
A comparative study of the thermal decomposition of ammonium perchlorate (AP)/hydroxy terminated polybutadiene (HTPB) based composite propellants has been carried out in presence and absence of nano iron oxide at different heating rates in a dynamic nitrogen atmosphere using differential scanning calorimetry. The pronounced effect was a lowering of the high temperature decomposition by 49 °C. A higher heat release up to 40% was observed in presence of nano ferric oxide (3.5 nm). The kinetic parameters were evaluated using the Kissinger method. The increase of the rate constant in the catalyzed propellant confirmed the enhancement of the catalytic activity of ammonium perchlorate. The scanning electron micrographs of nano Fe 2 O 3 incorporated in HTPB revealed a well‐separated characteristic necklace‐like structure of α‐Fe 2 O 3 particles at high magnification.