writer：Lei Wang, Lixin Chen*, Ping Song, Chaobo Liang, Yuanjin Lu, Hua Qiu, Yali Zhang, Jie Kong and Junwei
keywords：Ti3C2Tx MXene
source：期刊
specific source：Composites Part B-Engineering
Issue time：2019年

Few-layered Ti₃C₂T_x MXene was fabricated by ionic intercalation and sonication-assisted method, followed by thermal reduction at medium-low temperature. Then annealed Ti₃C₂T_x/epoxy electromagnetic interference (EMI) shielding nanocomposites were obtained by solution casting method. XRD, SEM, AFM and TEM indicated the successful preparation of few-layered Ti₃C₂T_x. FTIR, XPS and XRD showed that thermal reduction removed partial polar groups on the surface of Ti₃C₂T_x with no by-product. For a fixed Ti₃C₂T_x loading, compared with Ti3C2Tx/epoxy EMI shielding nanocomposites, the annealed Ti3C2Tx/epoxy EMI shielding nanocomposites exhibited relatively higher electrical conductivity and excellent EMI shielding effectiveness (SE). When the mass fraction of annealed Ti3C2Tx was 15 wt%, the annealed Ti3C2Tx/epoxy EMI shielding nanocomposites presented the optimal electrical conductivity of 105 S/m and EMI SE of 41 dB, 176% and 37% higher than that of 15 wt% Ti3C2Tx/epoxy EMI shielding nanocomposites. Furthermore, the annealed Ti3C2Tx/epoxy EMI shielding nanocomposites 5 wt% Ti₃C₂T_x exhibited the optimal Young''''s modulus of 4.32 GPa and hardness of 0.29 GPa, respectively.