Precipitation method to prepare conductive F-doped SnO_2-coated rutile TiO_2 whisker and its application in coating

摘要

In this work, K_2Ti_4O_9 whiskers are prepared by adding a certain amount of NaCl as the whisker reaction slow-release agent. Rutile TiO_2 whiskers are obtained by ion exchange and microwave sintering method with K_2Ti_4O_9 whiskers as templates. The surface morphology and crystal structure of K_2Ti_4O_9 whiskers are analyzed and characterized by scanning electron microscope (SEM), X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), and energy-dispersive X-ray spectroscopy (EDS). One-dimensional conductive whiskers of fluorine-doped tin dioxide-coated rutile titanium dioxide (FTO@TiO_2) were prepared by the hydrothermal chemical combined precipitation method. Under the optimized conditions, the resistivity of the conductive whiskers was 0.625 kΩ, and the Hunter whiteness is 80.3. Additionally, FTO@TiO_2 conductive nanomaterials were dispersed into acrylic polymer emulsion (APE) to make antistatic slurry and coat it on the surface of the polyester fabric. After the antistatic coating has dried, FTO@TiO_2 whiskers are located in the coating mold; FTO@TiO_2 whiskers bridge each other to form a current path, so that the fabric has antistatic properties. Under the best experimental parameters, the FTO@TiO_2 whiskers possessed excellent electrical conductivity, and the surface resistance of the coated fabric can reach 10~6 Ω, and it presented certain antistatic properties as well.