Preparation And Influencing Factors Of Fabric-based Structural Colors Based On Magnetron Sputtering Metho

The traditional dyeing and printing industry has pollution on the environment.In order to protect the environment,new types of dyeing technologies have been developed continuously.Magnetron sputtering technology is a kind of physical vapor deposition methods.Through the technology a film sputtered on textiles can make structure colors,and the materials suitable to form the film are rich and easy to get.More importantly,there is no sewage discharge problem,which is of great significance for the development of the new eco-friendly dyeing and finishing technologies.In this paper,different fabrics are collectively referred to as substrate fabrises,and the metal films sputtered on the surface of the substrate fabrics are collectively referred to as substrate films,and ZnO was sputtered on the substrate films to prepare thin film interference-type structural colors.Firstly,the structural color was prepared through the Cu+ZnO composite thin film structure on cotton,polyester,coated polyester and other substrate fabrics by magnetron sputtering technology.The effect of substrate fabrics on the prepared structural color based on special film thickness was studied.The results showed that the structural color was produced by the interference effect of the thin films,and the substrate fabrics has a great influence on the structural colors.For polyester fabrics,the difference of structural colors between coated or none-coated samples was mainly caused by the reflection ability of the substrate fabric itself to light.For cotton and polyester substrate fabrics,the large difference in structural colors was due to the different structure of the fibers’ surface.The smoother and flatter the fiber surface of the substrate,the higher the brightness and saturation of the structural color.Secondly,the influence of the substrate films on the structural color was studied.Three metals,such as Cu,Al,and Ag,were applied as the substrate films to prepare the structural color.The result showed that the brightness and saturation of the structural color were changed with the substrate film,the structural colors on the three substrate films were different,and the color of the substrate films also affected the final structural color rendering effect.Thirdly,the effect of substrate film thickness on the structural color was explored as Cu used as the substrate film.The results showed that the brightness and saturation of structural color were affected by the thickness of Cu films.When the film thickness was more than 10 nm,the thin film interference-type structural color can appeared.With the increase of Cu film thickness,the reflectivity of the structural color in the red band increased.Multi-angle color test and analysis of the structural colors was carried out on the Cu substrate films prepared with different thickness.When the structural colors were generated,there was an iridescent effect.By calculating and analyzing the chromaticity difference of the multi-angle color,it can be seen that the chromaticity difference of the structural color was the largest when the thickness of Cu film was 15 nm.Finally,the effect of ZnO film thickness on the structural color was studied.It was found that when the ZnO film thickness was 30 nm,the thin film interference-type structure color was purple,and the color changed periodically as the thickness increased,with a period about 120 nm.For the multi-angle color analysis,it can be seen that when the ZnO film thickness exceeded 120 nm,the chromaticity difference of the iridescent effect increased rapidly.For the change rule of multi-angle color,as the observation angle increased,the chromaticity difference increased gradually and the iridescent effect became more obviously.