Thermal degradation kinetics of polyamide 6, 6 cable ties by thermogravimetric analysis

الملخص EN

-he thermal degradation of cable ties of polyamide (PA6,6) neat and UV stabilized was investigated by thermogravimetry (TG) and its derivative (DTG) at several heating rates between 5 and 80 oC min-1 in helium atmosphere.

^gh heating rates signal novel peaks in the DTG curves that indicate melting temperature of PA6,6.

The kinetic parameters calculated via isoconversion and nonisothermal data using the Flynn-Wall-Ozawa, Kissinger and Coats-Redfern methods showed comparable activation energy values.

Exposure of the ties to outdoor environment causes pre-mature stress cracking and brittle failure due to prevalence of crosslinking reaction occurring in the polymer chains