Browsing by Author "Zbončák, Radek"
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- ItemVliv umělého stárnutí na mechanické vlastnosti pryžeZbončák, Radek
- ItemVliv umělého stárnutí na mechanické vlastnosti pryže(Technická Univerzita v Liberci, 2011) Zbončák, Radek; Marvalová, BohdanaThe study is focused on effect of the accelerated heat ageing (100°C) on mechanical properties of butadiene-styrene rubber (SBR). The friction coefficient is measured with Ball-On-Disk tribometer, relaxation and elongation is measured by tensile tests, Shore hardness and dynamic moduli are measured by DMA method. Material loses properties of tough material due to ageing and starts to behave like fragile materials. Values of dynamic moduli and hardness grow. The dumping, stress at break, deformation ability and friction coefficient decrease.