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E. Makarewicz, I. Shyychuk, H. Maciejewski, O. Shyichuk

A study on thermal stability of glycidylsiloxane resins cured with aliphatic amines (in English)

Polimery 2015, No 7-8, 448


DOI: dx.doi.org/10.14314/polimery.2015.448

Summary
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. Asecond degradation step takes place above 700 °C resulting in disperse silica.
Keywords: glycidylsiloxane resins, curing, thermal oxidative destruction
e-mail: maciejm@amu.edu.pl
E. Makarewicz, I. Shyychuk, H. Maciejewski, O. Shyichuk (266.9 KB)
A study on thermal stability of glycidylsiloxane resins cured with aliphatic amines (in English)