Calculation of the basic kinetic parameters of thermo-oxidative degradation of polyethylene and its copper-containing composites

摘要

Calculation of the basic kinetic parameters of thermo-oxidative destruction of porous HDPE and copper-containing com- posites based on porous HDPE was carried out by the IKP method. It was shown that thermo-oxidation of these materials consisted of three stages:(1)the migration of oxygen molecules to the active oxidising centres and the beginning of chain oxidation;(2) destruction of polymer molecules; and(3)thermodegradation of "nuclei". However, porous HDPE was oxidised at lower tem- perature. Thermooxidation of copper-containing porous HDPE composite was characterised by the higher activation energy.