This study focusses on investigations based experiments which are carried out to check the mechanical & thermal properties of woven epoxy composite laminates from Basalt/PP, Basalt/PET fibers and vice versa. Fabricated composite samples are subjected to mechanical and thermal characterization. The results reveal that, there is noticeable improvement in mechanical properties with the change of weaves in basalt hybridized composites. Interfacial linkages/bond between fibers and resin cause a significant modulus increase in composites. Thermal behavior of fiber and composite was observed by Thermal Gravimetric Analysis and Differential Scanning Calorimetric. Thermal properties are also affected by hybridization. Thermal conductivity is strongly affected by resin properties. A demonstration of ruptured surface was done by Fractography. The results show that hybridized basalt in different composites leads to a significant improvement in the dynamic and static mechanical properties of composites. Fiber type, weave structure, and resin properties greatly affect the mechanical properties of composites made with hybrid basalt fabrics.
This paper studied the mechanical properties of carbon fiber reinforced polybutylene terephthalate (PBT) composites, selected the different sizing agent to improve the interface binding capacity of carbon fibers (CFs) and PBT. Some CFs were modified with polyvinyl acetate (PVAc), and they were named p-C. Some other CFs were modified by ethylene acrylic acid (EAA), and they were named e-C. After modification, the groups of carboxyl were introduced into the surface of p-C. For e-C, the groups of C=C were introduced. For PBT/p-C composites, the maximum of tensile strength reached 68.22 MPa and elastic modulus reached 3263.18MPa, while the content of CFs is 15 wt.%. For PBT/e-C composites, with addition of the same content of CFs, the tensile strength and elastic modulus could reach 90.76 MPa and 4334.76 MPa respectively. Compared with pure PBT, the mechanical properties of the composites were improved significantly, and the reinforcement effect was more obvious in PBT/e-C composites, because of the better binding capacity between CFs and PBT. The decomposition temperature of the composites was between 378 °C and 417 °C, and they presented better heat resistance property.