Fabrication and Characterization of E-Glass Fiber Reinforced Unsaturated Polyester Resin Based Composite Materials

E-glass fiber mat reinforced Unsaturated Polyester Resin (UPR)-based composites were fabricated by conventional hand lay-up technique. The fiber content was varied from 5 to 50% by weight. Mechanical properties (tensile and bending) of the fabricated composites were investigated. Tensile Strength (TS) of the 5% and 50% fiber reinforced composites was 32 MPa and 72 MPa respectively. Similarly, Tensile Modulus (TM), Elongation at break (Eb), Bending Strength (BS), Bending Modulus (BM), and Impact Strength (IS) of the composites were increased by the increase of fiber loading. Interfacial properties of the composites were investigated by Scanning Electron Microscopy (SEM) and the results revealed that the interfacial bond between fiber and matrix was excellent.