| The traditional textile printing and dyeing industry consumes a lot of water resources during the dyeing process,and due to the high pigment content in the discharged wastewater,it causes serious environmental pollution.To cope with this severe situation,various new dyeing technologies have been born accordingly.Magnetron sputtering coating technology is a kind of physical vapor deposition.Using it to coat textiles can make textiles color,and can also produce a variety of high value-added functions such as antibacterial,UV resistance,electromagnetic shielding,and more importantly,It can solve the problem of sewage discharge in the printing and dyeing process and is of great significance for the development of new,ecological and environmentally friendly textiles.The paper firstly sputter-deposits titanium dioxide films directly on cotton fabrics.The experimental results show that when there is no base layer film,no structural color is generated when the titanium dioxide film thickness is 12.3nm,95 nm,and 201 nm,but it will increase with the thickness of the film.Increased,the surface of the cotton fabric was slightly yellowed.Then deposit a base layer on the surface of the cotton fabric.The first step changes the state of the Cu film of the base layer.The results show that the sputtering power of the C u film is too small to form a complete film and basically exhibits broadband reflection,so its structural color is not obvious;With the gradual increase of the reflectivity of C u film,the structure color of cotton fabric will appear red shifting.The lightness of the base layer is too high or the color is yellowish,which is not conducive to the generation of structural color of the composite film.The color of the base layer needs to be saturated.The higher the degree of saturation,the purer the sample color,the more favorable the formation of the structural color of the composite film.Next,the material type of the base layer was changed,and metal zinc and 304 stainless steel were added as the base layer.The results show that the surface of the base layer film is relatively uniform and there is no obvious particle agglomeration,which is more conducive to the generation of structural color of the composite film.By analyzing the principle of single-layer thin film interference,it can be concluded that when a cotton fabric is coated with a base layer,a single-layer thin film interference model can be constructed on it to achieve structural color.This topic analyzes the color development effect of the Cu / Ti O2 composite film on the surface of cotton fabrics through theoretical calculations and experimental results.For samples with a thickness of 165 nm and 201 nm of transparent dielectric film,it conforms to the law of interference color of the film,but for the smaller thickness of 68.5nm and The calculated maximum reflection wavelength of the 95 nm thin film does not correspond to the maximum reflection wavelength measured by the actual fabric.The reason is that when the thickness of the transparent dielectric film is small,it does not conform to the interference interfere nce color generation law of the film.Propagation deviates from the original direction,that is,light scattering is formed,so the structural color of the thin film formed at the beginning of sputtering may be caused by thin film interference and light scattering together.The spectral reflectance curve of the sample from 10 ° to 70 ° was measured by the R1 angle-resolved spectrometer.When the thickness of the sputtering medium film reached 129.7nm,the multi-angle structural color began to appear on the surface of the cotton fabric.When the film thickness continued to increase,the multi-angle Iridescent effect is more obvious. |
PDF Full Text Request