Petroleum-based Safe Process Oils in NR, SBR and their Blends: Study on Unfilled Compounds. Part II. Properties

摘要

In this second paper of the series the performances of DAE, TDAE and MES oils in NR, SBR and 50/50 NR/SBR are compared. They have only minor effects on Mooney viscosity and cure rate of all the compound types, except for NR compounds. The incorporation of DAE increases theTg of the rubber compounds, while the use of MES oil has no effect on the Tg of NR but decreases the Tg of SBR slightly. The different oil types show only a slight change in loss tangent values at 0 and 60°C. The use of TDAE and MES oils in SBR and in the NR/SBR blend yields compounds with similar mechanical properties, while the use of MES oil in NR results in lower modulus and tensile strength. NR is most sensitive to change of oil type.