the effects of multi-walled carbon nanotubes on the mechanical properties of silicone rubber-based nanocomposites

In this study, multi-walled carbon nanotubes (mwcnts) were used as reinforcement for silicone rubber at different weight percentages (i.e. 0, 0.25, 0.5, and 1 wt.%). the tensile, compressive, and compression set behaviors of the prepared composites were examined through standard tests. the fracture surface of the tensile samples was also analyzed using a scanning electron microscope (sem). the results indicate that incorporating 0.25 wt.% mwcnts into silicone rubber leads to an 11% increase in tensile strength and a 27% increase in elastic modulus compared to pure silicone rubber. furthermore, the presence of mwcnts nanoparticles enhances the compressive strength from 3.2 mpa in pure silicone to 6.2 mpa at 0.25 wt.%, while increasing the mwcnt content up to 1 wt.% gradually decreases the compressive strength. additionally, the presence of mwcnts reduces the compression set of silicone rubber.