ENVIRONMENTAL MODELLING OF SBR RUBBER DAMPING FOR NOISE VIBRATION REDUCTION

摘要

Since the SBR rubber has been used for vibration damping, an environmental enhancement was performed in laboratory to reduce the noise generated by vibration. Ferrites (MgFe_2O_4 and MnFe_2O_4), which have been prepared using co-precipitation reaction method, were mixed separately with SBR rubber to form rubber composite of well damping characteristics, resulting in less noise vibration. The specific gravity, hardness, and shock reflection were explored in the lab to show the effect of ferrites ratio in the mixture on the damping properties of the rubber composite. Results showed that the rubber damping was improved with increasing the ferrites ratio, reducing the shock reflection ratio and damping time and increasing the hardness. In addition, slightly higher hardness, higher wave reflection ratio, and higher wave reflection time are associated with using magnesium ions compared to manganese ions.