Cure kinetics of epoxy–amine resins used in the restoration of works of art from glass or ceramic

摘要: The cure kinetics of two epoxy/amine resins, Araldite 2020 and AY103-HY956 widely used as adhesives in the restoration works art from glass or ceramic was investigated using FTIR spectroscopy. These resins are two-part adhesives, consisting a resin – A, based on diglycidyl ether bisphenol hardener B which is either cycloaliphatic amine (isophorone diamine) for 2020, mixture three aliphatic amines HY956. study collection IR spectra, middle range (4000–600 cm � 1 ), mixtures at different proportions isothermal temperatures (22–70 C) function curing time. A kinetic model employed to simulate experimental data rate constants. Diffusion control incorporated describe behaviour high degrees conversion. From fitting diffusional parameters were estimated, together with activation energies autocatalytic It found that higher obtained increased amounts hardener. Differences performance explained type 2006 Elsevier Ltd. All rights reserved.