In this study, Ti₃C₂ was delaminated into monolayer or few‐layer d‐Ti₃C₂ nanosheets, followed by preparation of d‐Ti₃C₂/thermoplastic polyurethane (TPU) composites. The products were characterized by X‐ray diffraction and field emission scanning electron microscopy. The effects of d‐Ti₃C₂ loading on the thermal and mechanical properties of the composites were investigated and the fracture morphology was analyzed. Results showed that the prepared d‐Ti₃C₂ was a monolayer or few‐layer nanosheets and the monolayer thickness is about 1.2 nm. The two‐dimensional d‐Ti₃C₂ was uniformly dispersed in the TPU matrix. The addition of d‐Ti₃C₂ nanosheets increased the thermal conductivity of TPU and also improved the mechanical properties of the matrix. When d‐Ti₃C₂ 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/m³.

中文翻译：

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二维d-Ti3C2对热塑性聚氨酯复合材料的机械和导热性能的影响

在这项研究中，将Ti ₃ C ₂分层为单层或几层d-Ti ₃ C ₂纳米片，然后制备d-Ti ₃ C ₂ /热塑性聚氨酯（TPU）复合材料。产品通过X射线衍射和场发射扫描电子显微镜表征。研究了d-Ti ₃ C ₂载荷对复合材料热力学性能的影响，并分析了断裂形态。结果表明，制备的d-Ti ₃ C ₂为单层或几层纳米片，单层厚度约为1.2 nm。二维d-Ti ₃C ₂均匀分散在TPU基质中。d-Ti ₃ C ₂纳米片的添加提高了TPU的导热性，还改善了基体的机械性能。当d-Ti ₃ C ₂负载为1 wt％时，比强度和比伸长率分别提高了约29％和53％，而耗散能量则增加了0.3 kJ / m ³。