Preparation and properties of TDI modified carbon nanotubes/ polyurethane composites
Multiwalled carbon nanotubes (MWNTs) were functionalized by grafting 2,4-toluene diisocyanate (TDI) on their surface to improve their dispersion in polymers. TDI-grafted-MWNT/polyurethane (PU) composites with good uniformity and dispersion were prepared by solution blending. FTIR, SEM, DMA and rIGA were used to characterize the structures and properties of the composites. It was demonstrated that the well-dispersed TDI-grafted-MWNTs in PU ma-trix improved the mechanical and thermal properties of the composites.