Monitoring the curing processes of epoxy oligomers with partially substituted polyethoxymetallosiloxanes by IR spectroscopy and thermomechanical analysisстатья
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Аннотация:In this work, the curing of «ED-20» epoxy resin with partially siloxysubstitutedaluminum, iron, and zirconium siloxanes that we obtained previouslywas studied. The initial content of a metallosiloxane in the compositionswas 5–50 wt% with respect to the resin. In all the cases, thermal curing wasused to obtain a series of samples in the form of solid homogeneous materials.The fact of the epoxy ring opening in the resin was confirmed by IR spectroscopy.The catalytic properties of the metal atom in a metallosiloxane werefound to affect the curing process. The samples demonstrate rather a highresistance to thermooxidative destruction, and in most cases, their glasstransition temperatures are lower than those obtained upon standard curing of«ED-20» resin with triethylenetetramine. Partially siloxy-substituted metalloalkoxysiloxanescan be efficient agents for curing and formation of a hybridmaterial based on epoxy resins.
