Abstract
The aim of this work was to investigate the effect of surface modification of carbon nanotubes (CNTs) on the mechanical properties of polyimide (PI) composites with and without MoS2. A three-phase system of CNT/PI/ MoS2 laminates were fabricated with an extrusion-grade PI to produce CNT-reinforced laminates with MoS2 volume fractions of 1–5%. The tensile and impact properties of CNT/PI composites and CNT/PI/MoS2 laminates were also measured and compared. Results showed that the introduction of CNTs as reinforcing additives improved the tensile properties of the composites, but worsened their impact properties. Furthermore, the addition of MoS2 increased the impact strength of the CNT/PI composites greatly. The optimum contents of CNT and MoS2 have been found.
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