Effects of some secondary amines on the oxidation of ethylene-propylene elastomers

摘要

The oxidative degradation of ethylene-propylene elastomers (EPDM and EPR) in the presence of some secondary amines was studied. The stabilization efficiency of these additives was assessed by oxygen uptake performed in air at 180℃ and normal pres- sure. The oxidation induction times and the oxidation rates were obtained for polymer systems containing low amounts (0.05 and 0.1 phr) of additive. Some considerations concerning the effects of the chemical structure of the compounds added to EPDM and EPR on the thermal stability of elastomers are presented.