Study on Properties of Multi-walled Carbon Nanotubes/Epoxy Composites

Multi-walled carbon nanotubes(MWNTs)/epoxy composites were prepared by the combination of the physical and chemical methods.The relation between tensile strength and tensile modulus of MWNTs/epoxy composite and the addition amount of MWNTs was investigated by mechanical tensile test.The tensile cross-section of the MWNTs/epoxy composite was analyzed by SEM.Their electrical properties were also tested.The results showed that the MWNTs which were treated by chemical acidification dispersed well in composites and the mechanical properties improved obviously,however their electrical properties were lower compared with untreated composites.