Effect of nanoparticles of titanium dioxide in technique textiles

Abstract

Samples of ceramic fiber textile, with glass insert that supports 640 °C, were characterized. Samples were prepared with 5% and 10% of titanium dioxide nanoparticles, respectively, through starch impregnation method; later they were burned at different temperatures (400 °C, 700 °C, 800 °C and 1100 °C) during 24 h. The weight of each one was obtained, and it was observed that some samples lost more weight than the others. Friction test was conducted to evaluate wear. Macroscopic observations indicated that with 5% TiO2 nanoparticles, the samples were not eroded 100% as the others without nanoparticles, but after being burned above 700 °C an opaque film is formed, and at 1100 °C they became slightly yellowish and diffused corresponding to a change from clinoenstatite to MgSiO3; the samples become brittle from 800 °C. The phases formed and the effect of TiO2 nanoparticles at the surface was determined by XRD, EDS-X analysis. Finally, oxides formed in the fiber at different temperatures were quantified.