Graphene is used in composites primarily because of its extraordinary properties. Its high surface area and aspect ratio allow for effective load transfer when incorporated into a matrix, thus enhancing the mechanical properties of the composite. Moreover, its thermal and electrical conductivity can significantly improve the performance of composites in applications requiring efficient heat dissipation or electrical conductivity. Graphene's impermeability to gases also enhances the barrier properties of composites, making them suitable for protective coatings and packaging.
