Sulfur-Containing Aldehyde Oligomers as Thermal Stabilizer (V)

Addition Effect of Sulfur-Containg Aldehyde Oligomers to Vulcanized Rubber

Abstract

Sulfur-containing aldehyde (SA) oligomers were added to vulcanized rubbers (isoprene rubber and pro pylene oxide rubber), and their thermal stabilizing effects were investigated by stress relaxation, thermal analysis, etc. Although the effect of SA oligomers was smaller than that of commercial phenolic and amine antioxidants, these oligomers had a similar effect to commercial dilaurylthiodipropionate as antioxidant of hydroperoxide decomposer type, and a synergistic effect due to the addition of phenolic antioxidant was observed. And thermal analysis was effective as one of the methods for estimation of thermal oxidative degradation.