To improve the thermal and mechanical properties of epoxy resins, epoxy-functionalized POSS (E-POSS) glass fiber (GF) were used to reinforce resin (E51) composites. The tensile, thermo-mechanical, fractured, tests carried out characterize these hybrid materials. results show that E-POSS GF could significantly resins due high crosslink density matrix synergistic interaction between resin, E-POSS...