Preparation And Properties Of Conductive Fabrics Modified By Two-dimensional Titanium Carbide

Conductive textiles have a wide application prospect in the field of flexible wearable electronics.Two-dimensional titanium carbide material is a popular conductive material because of its excellent electrical conductivity and mechanical properties,and textile is the ideal base material for flexible conductive products.In this paper,a flexible conductive textile with excellent properties was prepared by combining two dimensional nanomaterials with textiles.In this paper,the precursor titanium aluminum carbide(Ti₃Al C₂)is etched by HCl/Li F hybrid system to obtain two-dimensional titanium carbide nanosheets(Ti₃C₂T_x).The prepared two-dimensional nanomaterials have smooth surface and no obvious defects,providing raw materials for subsequent experiments.In the experiment,a layer of Ti₃C₂T_xnanosheet film is successfully deposited on the surface of polyester and aramong fiber by pumping filtration method,and two conductive textile materials are obtained.The experimental results show that the infrared emissivity of Ti₃C₂T_xself-supported film is 0.089,the surface resistance is 0.35?/sq,and the electrical conductivity can reach 51.25 s/cm.After the Ti₃C₂T_xdispersion is pumped,the surface resistance of Ti₃C₂T_x/polyester is 0.53?/sq,the conductivity is 36.35 s/cm,and the infrared emissivity of the material is 0.102.The surface resistance of Ti₃C₂T_x/aron is 3.03?/sq,the conductivity can reach 5.64 s/cm,and the infrared emissivity is 0.205.After four weeks,the surface resistance of Ti₃C₂T_x/polyester increases to 0.75?/sq,and the surface resistance of Ti₃C₂T_x/aramid increases to 3.64?/sq,showing excellent conductivity and infrared stealth properties.The prepared conductive textiles have good stability when preserved under closed conditions.However,the conductive fabric prepared by this method has poor water resistance and only weak molecular interaction force exists between the two-dimensional nanosheet and the substrate.In order to improve the adhesion strength of the fabric with nano materials,choosing the appropriate cation modifier to cationic modification of cotton fabrics increase fabric with surface electronegative Ti₃C₂T_xnano electrostatic bonding force between,with cationic modified cotton fabric as base material,by ultrasonic dispersion method,make Ti₃C₂T_xpiece of nanoparticles adsorption on the surface fabric.The cationic modification process and ultrasonic dispersion conditions of cotton fabric were optimized and the best preparation process is obtained.The optimal process of cationic modification is as follows:cationic modifier was 10%owf,the concentration of sodium hydroxide is 10 g/L,the modification time is 30 minutes and the modification temperature was 60?.The optimal ultrasonic process was 10 m L Ti₃C₂T_xdispersion and the ultrasonic time was 60 minutes.The surface resistance of Ti₃C₂T_x/cationic modified cotton knitted composite is up to 84.5?/sq.After 20 times of washing,the surface resistance of Ti₃C₂T_x/cationic modified cotton knitted composite rose from 84.5?/sq to 95.6?/sq,still below 100?/sq,indicating that the conductive fabric has good water resistance.The uv resistance of the fabric before and after washing has little change,and the uv protection coefficient is still more than 50.After 20 times of friction,the surface resistance of the composite increases from 84.5?/sq to 87.3?/sq,and the surface resistance increases by only 3.3%.The uv protection coefficient of the fabric is still greater than 50,indicating that the conductive fabric has good friction resistance.The above two methods can produce conductive textiles with excellent performance,which provides a new idea for obtaining flexible wearable electronic products.