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Curing behavior and network formation of cyanate ester resin/polyethylene glycol
Author(s) -
Ma Junxian,
Lei Xuefeng,
Tian Di,
Yuan Liangjie,
Liao Chongshan
Publication year - 2015
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.41841
Subject(s) - curing (chemistry) , cyanate ester , differential scanning calorimetry , fourier transform infrared spectroscopy , polymer chemistry , materials science , polyethylene glycol , peg ratio , copolymer , kinetics , nuclear chemistry , chemistry , chemical engineering , polymer , organic chemistry , composite material , physics , finance , quantum mechanics , epoxy , economics , thermodynamics , engineering
The mechanism and kinetics of the curing reaction of cyanate ester (CE) resin modified with polyethylene glycol were investigated by means of differential scanning calorimetry (DSC) and Fourier‐transform infrared spectroscopy (FTIR). The relationship of heat flow versus conversion rate was used to evaluate the effects of polyethylene glycol (PEG) on the curing reaction of CE. DSC results showed that the addition of PEG decreased the curing temperature of CE effectively when its content was less than 20 wt %. The curing behavior of CE/PEG still complies with the self‐catalytic kinetic model proposed by Kamal. The effects of PEG content on the kinetics parameters and conversion rate of the curing reaction were discussed. FTIR results indicated that the –OH groups in PEG participated in the polymeric reaction of CE and formed –O–C (=NH) –O– structure through block copolymerization, which extended the chain length between triazine rings and reduced the density of triazine rings. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41841.