▎ 摘　　要

NOVELTY - The MXene-based conductive self-cleaning composite fabric for electromagnetic shielding has a porous fabric substrate, an MXene-based conductive functional layer, rough micro-nano particles and a silicone rubber composite layer. The MXene-based conductive functional layer is coated on the surface of the porous fabric substrate. The rough micro-nano particles grow on the surface of the MXene-based conductive functional layer in situ. The silicone rubber layer covers the rough micro-nano particles to form the rough micro-nano particles and the silicone rubber composite layer. USE - MXene-based conductive self-cleaning composite fabric for electromagnetic shielding. ADVANTAGE - Tests show that the composite fabric material has high conductivity and electromagnetic shielding performance, and the electromagnetic shielding performance value of the composite fabric material in an X wave band can be as high as 58.4dB under the optimal condition; meanwhile, the super-hydrophobic self-cleaning function of the composite conductive fabric endows the composite conductive fabric with excellent environmental stability (such as water resistance/dust prevention/ice prevention/rain and snow prevention) and ideal mechanical/wear-resistant/corrosion-resistant stability. Therefore, the multifunctional conductive self-cleaning composite fabric disclosed by the invention can be applied to the related fields of high-efficiency electromagnetic shielding, electromagnetic wave absorption and the like in a complex and harsh environment. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the MXene-based conductive self-cleaning composite fabric for electromagnetic shielding which involves: coating the MXene/carbon nano material dispersion liquid or the MXene dispersion liquid on the surface of the pretreated porous fabric substrate in a multi-coating mode, and drying to obtain a stable MXene/carbon nano material conductive functional coating or an MXene conductive functional coating on the surface of the fabric; generating silica particles or titanium dioxide particles with a micro-nano hierarchical structure on the surface of the conductive functional coating in situ by using a sol-gel method; and coating the low-surface-energy silicone rubber solution on the surface of the conductive coating with the rough structure, and then vulcanizing to obtain the super-hydrophobic self-cleaning multifunctional composite fabric. DESCRIPTION OF DRAWING(S) - The drawing shows scanning electron microscope image of the raw polyester fabric (a) and the conductive self-cleaning composite fabric (b).