Temperature Dependency of the Payne Effect in NBR/PVC Blends

In this study, the effects of temperature and also the presence of PVC on the Payne effect of NBR based compounds were investigated. Increasing the temperature, served to decrease the drop of the shear storage modulus (ΔG′) in the strain sweep test. The ΔG′ for the sample containing PVC show higher value than that for the rubber compound. The slop of modulus drop after Payne effect (A_d) declined by raising the temperature, especially in blend sample. Critical strain (S_c) increased by increasing temperature. In other words, less dependency of modulus on the strain is decreased at higher temperatures. Blend samples due to the presence of PVC phase are more sensitive to the shear than rubber compound and non-linearization occurs in lower strains.