Multifunctional Epoxy Nanocomposites

In this work, the multifunctional epoxy nanocomposites filled with different nanofillers including magnetite, silica, and multi-walled carbon nanotubes were prepared. The conductive polymer polyaniline was introduced on the surface of nanofillers through surface initiated polymerization method to improve the interfacial interaction between nanofillers and epoxy matrix. The improved mechanical property of magnetite/epoxy nanocomposites was obtained due to the well-dispersed magnetite nanoparticles coverd by polyaniline. The tensile strength in polyaniline stabilized multi-walled carbon nanotubes/epoxy nanocomposites was enhanced 85% compared with that of pure epoxy. The introduction of phosphoric acid doped polyaniline and silica decreased the heat release rate peak of epoxy, providing the flame retardant property to epoxy.