Hybridization of filler in polymer composites is one technique of combining different properties of filler for making unique composites. Carbon nanotubes (CNTs) can be used as filler to enhance the mechanical properties of polymer composites. However, CNTs are difficult to disperse in a polymer matrix. The hybridization of CNTs and inorganic fillers can combine their properties and improve the dispersion in polymer composites. This research was focused on the fabrication and characterization of CNTs-dolomite filled with epoxy composites. The CNTs-dolomite hybrid fillers were prepared by physically mixing method and Chemical Vapor Deposition (CVD) method. The CNTs-dolomite hybrid compound filled epoxy composites with different filler loading were characterized by tensile test, Rockwell hardness test and scanning electron microscopy (SEM). The Epoxy/CVD composites showed higher mechanical properties than the Epoxy/PHY composites. This increase was associated with the homogenous dispersion of CNTs-dolomite hybrid compound as observed using SEM. It was demonstrated that the Epoxy/5CVD composites are capable of increasing tensile strength by up to 67 %, and tensile modulus of 28 %, when compared to a pure epoxy composite.
