Published : 2015-08-30

A study on thermal stability of glycidylsiloxane resins cured with aliphatic amines

Abstract

Oligomeric glycidylsiloxanes are promising components of hybrid amino-epoxy-siloxane coatings with improved properties. The thermal stability of amine-cured glycidylsiloxane resins were studied by means of thermogravimetric analysis. Four samples of glycidylsiloxane resin, with 18 to 30 glycidyl groups per molecule and molar masses from 5 to 10.5 kg/mol, were cured at 140 °C with triethylenetetramine (TETA), isophorone diamine (IDA) and a polyamide (PF). The onset temperatures of degradation, residual masses and heat effects were measured. Maximal degradation rates were registered at temperatures above 400 °C. Infrared spectra of the residues indicate that the least stable bonds are Si-C, C-H and C-N. A second degradation step takes place above 700 °C resulting in disperse silica.


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Makarewicz, E., Shyychuk, I., Maciejewski, H., & Shyichuk, O. (2015). A study on thermal stability of glycidylsiloxane resins cured with aliphatic amines. Polimery, 60(7-8), 448–456. https://doi.org/10.14314/polimery.2015.448