Polyarylene ether nitrile (PEN) based composites combined MXene, Polydopamine (PDA) and barium titanate (BaTiO₃, BT) with “core-shell”-like structure were developed successfully in this work, and then incorporating into the PEN matrix to form the PEN/MXene&[email protected] nanocomposite films through the solution casting method. The novel MXene&[email protected] nanoparticles were characterized by the Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Then the structure and properties of the obtained PEN/MXene&[email protected] nanocomposites are studied in detail. The results show that the modification of PDA improved the dispersibility of MXene nanosheets and BT nanoparticles in the PEN matrix, resulting in the enhancement of mechanical and dielectric properties. The research results reveal that when the content of MXene&[email protected] is 1%, the tensile strength and modulus reached 114.15 MPa and 3015.74 MPa, respectively. Most important, the PEN based nanocomposites exhibit the outstanding frequency in dependent dielectric properties, including high dielectric constant (5.08 at 1 kHz) and low dielectric loss (0.0178 at 1 kHz). These results indicate that the PEN/MXene&[email protected] composite films are greatly significant for using as the constructing high performance dielectric materials.

MXene，Polydopamine（PDA）和钛酸钡（BaTiO ₃在这项工作中成功开发了具有“核-壳”样结构的BT），然后通过溶液浇铸法将其掺入PEN基质中以形成PEN / MXene和[电子邮件保护的]纳米复合膜。通过傅立叶变换红外光谱（FT-IR），热重分析（TGA），X射线光电子能谱（XPS）和扫描电子显微镜（SEM）对新型MXene＆[受电子邮件保护的]纳米粒子进行了表征。然后详细研究了所得的PEN / MXene＆[电子邮件保护]纳米复合材料的结构和性能。结果表明，PDA的改性提高了MXene纳米片和BT纳米粒子在PEN基质中的分散性，从而增强了机械性能和介电性能。研究结果表明，当MXene＆[电子邮件保护]为1％，抗张强度和模量分别达到114.15 MPa和3015.74 MPa。最重要的是，基于PEN的纳米复合材料在依赖的介电特性方面表现出出色的频率，包括高介电常数（1 kHz时为5.08）和低介电损耗（1 kHz时为0.0178）。这些结果表明，PEN / MXene＆[电子邮件保护]复合膜对于用作构造高性能介电材料具有重要意义。