Comparing Dynamic Properties of Several Rubbers Filled with Silanized Silica Nanofiller

The effect of the same amount of precipitated silica nanofiller on the curing and dynamic properties of different blends of poly (styrene-butadiene) co-polymer (SBR) and poly butadiene (BR) with SBR/BR mass ratio 75/25, was investigated. The silica surfaces were pre-treated with bis[3-triethoxysilylpropyl]tetrasulfane (TESPT) to chemically bond silica to rubber. The rubbers were primarily cured by using sulfur in TESPT with addition optimum accelerator and activator, which helped to form sulfur chemical bonds between the rubber and filler. The silica particles were fully dispersed in the rubber matrix. The Mooney viscosity, cure and dynamic properties of the filled rubbers including tan δ, loss modulus (G'') and storage modulus (G') were measured as a function of temperature from -130''G'G ^oC to 100 ^oC, oscillation amplitude from 256 to 1000 μm, and test frequency 1Hz and results with emphasis on potential for tire tread application were discussed. It found that blends with different interphase characteristic represent quit different dynamic behavior. It seemed, the best skid resistance had belonged to blends with the best interphase characteristic (amount and distribution of rubbers in interphase) while blends with the highest interphase amount showed the lowest rolling resistance.