The effect of two‐dimensional d‐Ti 3 C 2 on the mechanical and thermal conductivity properties of thermoplastic polyurethane composites

In this study, Ti 3 C 2 was delaminated into monolayer or few‐layer d‐Ti 3 C 2 nanosheets, followed by preparation of d‐Ti 3 C 2 /thermoplastic polyurethane (TPU) composites. The products were characterized by X‐ray diffraction and field emission scanning electron microscopy. The effects of d‐Ti 3 C 2 loading on the thermal and mechanical properties of the composites were investigated and the fracture morphology was analyzed. Results showed that the prepared d‐Ti 3 C 2 was a monolayer or few‐layer nanosheets and the monolayer thickness is about 1.2 nm. The two‐dimensional d‐Ti 3 C 2 was uniformly dispersed in the TPU matrix. The addition of d‐Ti 3 C 2 nanosheets increased the thermal conductivity of TPU and also improved the mechanical properties of the matrix. When d‐Ti 3 C 2 loading was 1 wt%, the specific strength and specific elongation were improved by about 29% and 53%, meanwhile the dissipated energies increased by 0.3 kJ/m 3 .