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Study on Curing Reaction Thermokinetics of Azide Binder/Bispropargyl Succinate by Microcalorimetry
Author(s) -
Li Na,
Zhao Fengqi,
Luo Yang,
Mo Hongchang,
Gao Hongxu,
Xiao Libai,
Yao Ergang,
Hu Rongzu
Publication year - 2015
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.201500058
Subject(s) - isothermal microcalorimetry , reaction rate constant , curing (chemistry) , thermodynamics , activation energy , atmospheric temperature range , chemistry , order of reaction , azide , reaction rate , kinetics , materials science , polymer chemistry , enthalpy , organic chemistry , quantum mechanics , catalysis , physics
The thermokinetics of the curing reactions between poly‐(3‐azidomethyl‐3‐methyloxetane) (PAMMO) and bispropargyl succinate (BPS) were studied using a microcalorimeter. On the basis of experimental and calculated results, three thermodynamics parameters (the activation enthalpies, the activation entropies, the activation free energies), the rate constant, three thermokinetic parameters (the activation energies, the pre‐exponential constant, and the reaction order) and the enthalpies of the curing reactions between PAMMO and BPS in the temperature range of 50–65 °C were obtained, showing that the main reaction leading to a triazole structure easily took place in the studied temperature range. The linear relationship between ln k and the molar ratio of triple bonds to azide groups was found. Furthermore, the corresponding kinetic equation describing the curing reaction between PAMMO and BPS was d α /d t =10 −4.48 (1− α ) 0.962 at 333.15 K.