▎ 摘　　要

Carbon fiber (CF) reinforced epoxy matrix composites were incorporated with 0.5, 1, 2, 4, 7, 10, and 15 wt% poly(amidoamine) (PAMAM) functionalized graphene oxide (GO) via matrix modification. GO was synthesized by chemical oxidation and PAMAM dendrimer of generation 0.5 (G0.5) was used within the study. Surface chemistry of graphene was analyzed by X-ray photoelectron spectroscopy (XPS), which confirmed the oxidation and PAMAM functionalization (PAMAM-GO). After prepregging, laminated composites were manufactured by hot pressing. So produced CF/epoxy-PAMAM-GO composites were thermally analyzed by thermogravimetric analyses (TGA-DTG). The electrical conductivity of the composites was measured in three directions (fiber, transverse, and through-thickness). Mechanical properties were examined in means of interlaminar shear strength (ILSS) determined by short beam shear (SBS) tests. The neat graphene, GO, PAMAM-GO, and the fractured composite surfaces were imaged using scanning electron microscopy (SEM). As a result, PAMAM-GO incorporation significantly enhanced the electrical properties of CF/epoxy composites. Thermal stability increased while the ILSS values decreased.