▎ 摘　　要

With the piezoelectricity of natural bone, electrical stimulation has been widely used in clinic for promoting bone growth and reconstruction. It has special meaning to prepare a conductive biomaterial for bone repair. In this paper, reduced-graphene oxide(RGO)/polypyrrole(PPy) composites with high conducity were added in the solid phase of calcium phosphate cement(CPC) and the effect of this addition on the structure and properties was investigated. The composites had great impact on physicochemical properties of CPC. The results showed that the setting time of CPC significantly decreases with RGO/PPy adding. It has great influence of adding RGO/PPy on the mechanical properties and conductivity of CPC, but no obvious effect on the phase composition of CPC. The conductivity of CPC gradually increases with the increase of RGO/PPy adding amount, and the compressive properties show opposite results with RGO/PPy addition. It has a dependent relationship between the adding amount of RGO/PPy and the conductivity and compressive mechanical properties.