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Novel nitrogen‐containing epoxy resin. II. Cure kinetics by differential scanning calorimetry
Author(s) -
Hong Zhang Xing,
Qin Min Yu,
Zhao Hui,
Mei Wan Hong,
Rong Qi Guo
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.23146
Subject(s) - differential scanning calorimetry , isothermal process , epoxy , activation energy , materials science , kinetics , kinetic energy , polymer chemistry , thermodynamics , composite material , chemistry , physics , quantum mechanics
The isothermal and nonisothermal cure behaviors of a novel nitrogen‐containing epoxy resin (XT resin) were studied by differential scanning calorimetry (DSC). Various kinetic parameters and details of cure process were obtained based on the Avrami theory. The results indicated that Avrami method is suitable for calculating the kinetic parameters up to the gel point at least. The apparent activation energy ( E a ) for isothermal cure process was in agreement with that for nonisothermal cure process. E a value in the early stage (78.5–81.0 KJ mol −1 ) was about three times than that in the later stage (23.3–26.5 KJ mol −1 ). The kinetic results from Avrami theory may present a combined effect of all factors, and which is helpful to understand the cure technique for XT–DDS system. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 3483–3489, 2006