Study of the Effect of Silica Filler Silica 1165 on the Properties of Rubber for Rail Fastening Gaskets

The effect of silica filler Silica 1165 instead of kaolin and carbon black N220 on the plasto-elastic, rheometric, physical-mechanical, operational and dynamic properties of rubber based on general-purpose caoutchoucs was investigated in order to develop effective noise and vibration-absorbing rubber gaskets of rail fasteners for railway tracks. It has been established that the developed rubber with a sulfur vulcanizing system based on SKMS-30ARK, SKI-3 и SKD caoutchoucs with Silica 1165 additives has improved plasto-elastic and rheometric indicators, satisfactory physical and mechanical properties, is characterized by an increase in the vibration-absorbing properties of rubber, which is the determining factor for under-rail pads