Kinetics of Thermal Degradation of Flexible Polyamine-Epoxy Systems

The properties of the epoxy resin can be adjusted over a wide range based on the ingredient selection. Inthis work, kinetics of thermal degradation properties of poly ether amine (PEA)-modified epoxynetworks has been discussed. Two types of PEAs, namely poly (ethylene glycol) amine (PEG-AM) andpoly (propylene glycol) amine (PPG-AM), with molecular weights of ۲۰۰ g/mol and ۴۰۰ g/mol, wereapplied in epoxy modification. Glass transition temperature (Tg) of the networks by ۳۵.۳% and ۳۱.۴%,respectively. The values of Tg obtained from Fox-equation for PEA-modified networks wereoverestimated, demonstrating enhanced interaction in the system. The thermal durability of the epoxynetworks was investigated using thermo-gravimetric analysis (TGA), and activation energy ofdecomposition (Eα) was estimated by the integral is conversional approach.

کلیدواژه ها:

Polymer Rheology ، Thermal Stability ، Epoxy ، Poly Ether Amine