Abstract
AbstractDesign and preparation structure/function integrated polymer composites with high thermal conductivities and ideal mechanical properties have attracted widespread attention. Nanoscale graphene were employed to fabricate the thermal‐structural integration graphene/carbon fiber/copoly (phthalazinone ether sulfone ketone) composites via solution prepreg followed by hot‐compression method. The thermal conductivity (λ) and mechanical properties were all improved with the formation of graphene thermally conductive self‐reinforced network. The thermal conductivity was increased to 1.057 W/(m K) by 89.8% higher than the pure carbon fiber composites. Moreover, the flexural strength (1878 MPa), compressive strength (907 MPa) and interlaminar shear strength (66 MPa) of graphene‐modified composites improved with 22.1%, 51.9%, and 24.5% than the conventional composites, respectively. Dynamic mechanical analysis has proved that graphene/carbon fiber/copoly (phthalazinone ether sulfone ketone) composites had excellent high temperature mechanical properties, which presented a great potential for structure/function integrated composites.
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