Relationship Between Oxidative Induction Time and Heat Ageing Performance of Heat Shrinkable Tape

The relationship between oxidative induction time (OIT) and heat ageing performance of heat shrinkable tape was studied by tesing the heat ageing performance and OIT of heat shrinkable tape′s backing and adhesive layer. The results show that the OIT was not applicable for evaluating the heat ageing performance of heat shrinkable tape′s backing, since OIT did not correspond to heat ageing performance for the backing. The effect of heating on heat-oxidative ageing of the adhesive layer was slight in heating process, and there were no inducements for heat-oxidative ageing in thermal degradation, so the OIT can not be used to compare the heat ageing performance of adhesive layer.