Enhancement of Mechanical and Tribological Properties of SU-8 Polymer using Graphene Filler [ ]


In this work, surface micromechanical properties of different polymeric coatings (SU-8 resin and their composites with Graphene, Boron nitride etc.) on glass substrate will be examined using nanoindentation and pin-on-disc tribometer. The thicknesses of such coatings were 30-35 µm which will be done using spin coater. The load–unload responses will be used to extract their elastic modulus and hardness values using nanoindenter. Induced micro-structural differences in coatings will be confirmed using scanning electron microscopy (SEM). These measurements will be used to explain the differences in the tribological performance between different coatings. Such correlation is useful for more complex and application-specific tribological experiments. Both elastic modulus and hardness of SU-8 are increased after adding graphene filler and coefficient of friction is reduced at lower load and higher speed SU-8/graphene (5wt %) composite