Abstract
Butyl rubber was reinforced by the isoprene-modified silica. The modified silica was prepared via chemical modification by a hydrophobic and reactive oligomeric liquid isoprene rubber in a solvent. Thereafter butyl rubber was compounded with the modified silica and vulcanized by thermal compression molding process. Their properties were studied using oscillating disk rheometer (ODR), differential scanning calorimeter (DSC), dynamic mechanical analyzer (DMA), and universal testing machine (UTM). The surface modification of the silica moved up the curing time and enhanced apparently tensile strength and modulus of the rubber composites. In conclusion, cure behavior and mechanical properties of butyl rubber/silica composites can be controlled by chemical modification of the silica surface using rubber molecules.
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