Properties of graphene oxide modified epoxy resin and its composites

The graphene oxide (GO) modified epoxy resin (GH81) was prepared by mechanical grinding method. The dispersion of GO in epoxy resin (H81) was analyzed by optical microscope. The rheometer and differential scanning were used. The calorimeter is characterized by the hot melt behavior and curing behavior of H81 and GH81. The results show that GO is uniformly dispersed in the matrix resin. The addition of GO does not affect the melt viscosity and curing conditions of the matrix resin. The tensile strength, flexural strength and compressive strength of the carbon fiber composite GH81-300 with GH81 as the matrix resin in the 0° direction. They were 2270 MPa, 2239 MPa and 1529 MPa, respectively, which were 6.4%, 7.2% and 7.1% higher than when no GO was added.