Effect of Nanopowder TiO2 on Photofading of Indigo-dyed Fabrics
Using a tra-butyl titanate(TBOT)as the precursor of TiO2,the single-grain TiO2 powder was synthe-sized by hydrothermal reaction,and the granular anatase nanopore TiO2 was prepared.The results show that under the ultraviolet conditions,the nano powder titanium dioxide can greatly reduce the apparent depth of indigo fabric,when the TiO2 concentration of powder TiO2 is 10%,the decrease rate of K/S value reaches 51.81%.The dyeing cloth sample used with powder TiO2,after ultraviolet irradiation,the color value △L* is bright white,at the same time with the increase of powder TiO2 concentration,△L* increases,the color brightness increases,△a* begins to be larger negative value,the color is green,and with the increase of powder TiO2 concentration,the sample color green light decreases,red light increases.The TiO2 concentration of powder is 10%,with the increase of light time,the △a* value is biased to positive,and the staining cloth color light shift to red light,which change greatly from 6 to 8 h under the ultraviolet conditions,and change slowly after 10 h.
NETL
NSTL
万方数据
