Abstract: MXene is a two-dimensional nanomaterial akin to graphene, characterized by high electrical conductivity and a large specific surface area. It possesses a layered structure, simple fabrication process, excellent mechanical properties, and environmental stability. This material has garnered significant attention from researchers due to its outstanding electrical conductivity, hydrophilicity, and rich electrochemical active groups, showing potential applications in energy storage, sensing, catalysis, electromagnetic shielding, and biomedical fields. MXene layers obtained through etching with hydrofluoric acid (HF) and intercalation with organic macromolecules display functional groups such as -O-, -F, and -OH on their surfaces, rendering them hydrophilic. Furthermore, single-layer MXene can form stable colloidal dispersions in various aqueous and organic solvents. Leveraging these advantages, MXene/nylon fabrics can be fabricated by immersing fabrics in MXene dispersion and drying, and the functional groups on the MXene surface can combine with hydrogen bonds of the fabrics, thus firmly adhering to the nylon fabric surface. In this study, MAX phase ceramics were etched and intercalated with anhydrous ethanol as an intercalation agent, and HF generated in situ through the reaction of LiF and HCl as the etchant, to obtain a dispersion of single-layer MXene. MXene-conductive fabrics were prepared by the immersion method, investigating the influence of immersion-drying cycles on the conductivity of MXene fabrics and evaluating fabric durability and thermal properties. The conductive properties of the MXene fabrics obtained through one impregnation-drying process are limited, and it is difficult to meet the requirements of practical applications. In order to obtain an ideal conductive fabric, nylon fabrics were impregnated in MXene dispersion for several times, so that MXene can be combined on the surface of nylon fabrics as much as possible to form a stable conductive path, thus giving the fabrics excellent conductivity. After 1-4 impregnations, the electrical conductivity of the MXene fabrics was greatly improved, from 0.88 S/m to 55.91 S/m. After four impregnation-drying processes, the MXene/nylon fabrics were coated with layered MXene on the fiber surface. Due to the use of fluoride-based etching agents, MXene contains a large number of functional groups such as −OH, −F and −O−, which can form hydrogen bonds with nylon fabrics and bond closely. There are a large number of MXene layers on the surface of the nylon fabric and between the gaps, indicating that excessive MXene is filled in the gap of the nylon fabric or superimposed with the MXene layer on the fabric surface. The pattern of MXene layer on the surface of a single fiber can be observed at high magnification, which indicates that MXene and nylon fiber have a certain combination. With an increase in the number of immersion-drying cycles, the MXene content loaded onto the surface of the nylon fabrics gradually increased, resulting in enhanced fabric conductivity. After four times of impregnation-drying, the loading of MXene tended to be saturated, and the conductivity was 55.91 S/m. The washing fastness and rubbing fastness of the MXene/nylon fabrics are insufficient. After 25 times of washing, the conductivity of the fabrics is reduced to 1.47 S/m; after five times of friction, the conductivity of the fabric is 0.49 S/m.

Key words: MXene, conductive fabric, conductive performance, washing fastness, nylon

摘要： 为了探究浸渍法对于制备导电尼龙织物的可行性，采用MAX相陶瓷粉（Ti3AlC2）刻蚀和插层技术制备了单层MXene分散液，然后浸渍吸附到尼龙织物表面，获得MXene/尼龙织物。通过SEM、FT-IR、XRD对MXene及MXene/尼龙织物的形貌及结构进行表征，测试了织物的导电性能、耐水洗与耐摩擦牢度。结果表明：将尼龙织物浸渍在2.5 g/L的MXene分散液中，经过4次浸渍—干燥制备的MXene/尼龙织物导电性能达到最佳，电导率为55.91 S/m；织物的水洗牢度和摩擦牢度较差，在经过25次水洗后，电导率为1.47 S/m；经过5次摩擦后，织物电导率为0.49 S/m。该研究结果为提升MXene在尼龙织物上的导电性、耐洗性、耐摩擦性等提供了研究思路。

关键词: MXene, 导电织物, 导电性能, 水洗牢度, 尼龙