Abstract
Hybrid composites were prepared by impregnating epoxy resin into the short fiber mat consisting of carbon and glass fibers. The effect of the mix ratio of the reinforcing fibers (hybrid ratio) on the mechanical properties of the hybrid composites and the temperature dependence of the mechanical properties were studied.
As the hybrid ratio of carbon fibers decreases, Young's modulus decreases almost linearly, the tensile strength remains almost constant, and the impact fracture energy increases almost linearly. It is possible to estimate Young's modulus, the tensile strength, and the impact fracture energy of the composites with various hybrid ratios from an additive rule.
Young's modulus and tensile strength decreases with increasing temperature. The impact fracture energy increases as the temperature rises. The hybrid ratio-temperature superposition holds for each mechanical property.
