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Combustion Mechanism of Glycidyl Azide Polymer
Author(s) -
Hori Keiichi,
Kimura Motoyasu
Publication year - 1996
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.19960210310
Subject(s) - scanning electron microscope , combustion , fourier transform infrared spectroscopy , polymer , materials science , analytical chemistry (journal) , fourier transform , azide , exponent , chemistry , chemical engineering , composite material , organic chemistry , mathematics , mathematical analysis , linguistics , philosophy , engineering
A combustion model of glycidyl azide polymer (GAP) is presented. Linear burning rate and temperature profile measurements of model samples led us to the conclusion that linear burning rate is controlled by N 2 liberation process below the pressure exponent break point (2.3 MPa). Further, scanning electron microscope (SEM) photographs and Fourier transform infrared (FTIR) spectra of quenched samples by rapid depressurization of the combustor show that the N 2 liberation process is strongly limited to the melt layer at the combustion surface and the profile of the heat release rate is probably δ‐function like. This fact enables the application of an asymptotic analysis to this phenomenon.