EFFECT OF THERMAL AGEING ON MECHANICAL PROPERTIES OF STYRENE-BUTADIENE (SBR) RUBBERS

Abstract

The mechanical properties, the temperature dependence of dynamic behaviour of SBR and post thermal ageing properties of Soda-lime-silicate (SLS) glass were investigated. The glass specimens were heated at a temperature of 100 °C in a ventilated air oven with natural convection for 1, 3, 7, 14 and 21 days, respectively. The specimens were then tested in the tensile strength, elongation at break and their dynamic mechanical properties were determined by means of DMA at different frequencies and amplitudes. The dependence of the hardness on the ageing was also investigated.