Silica-Styrene-Butadiene Rubber Filled Hybrid Composites: Experimental Characterization and Modeling:

The mechanical behavior of epoxy matrix composites filled with nanosized silica particles and styrenebutadiene rubber is discussed. Scanning electron microscopy analysis and tensile test carried out at different crosshead speeds on the silicastyrenebutadiene rubber epoxy nanocomposites indicated the absence of particle aggregation and a reinforcing effect in terms of increased elastic modulus, yield, and ultimate strength. The results of wear test in pin-on-disc mode and hardness test on Rockwell R scale showed that the nanosized silica particles could improve the wear resistance of the epoxy matrix even though the content of the filler is at a relatively low level (1.02.0 wt%). This makes it possible to develop novel type of epoxy-based material with improved wear resistance for various applications. About 4070% increase in impact strength has been noticed due to addition of 0.51.5 wt% of styrenebutadiene rubber in 1.0 wt% silica-filled epoxy compos- ite. A good correlation between mechanical properties and weight contents of the filler materials, hardness and ultimate strength, and hardness and wear rate has been observed.

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