Photo-catalytic self-cleaning silk fabric prepared from thiocyanate aqueous solution

Abstract

The invention provides a method for preparing photocatalytic self-cleaning silk fabrics by using an aqueous thiocyanate solution, the method comprising the following steps: (1) Preparation of a solution: preparing an aqueous solution of thiocyanate, adding titanium dioxide nanoparticles therein, Obtaining a solution in which titanium dioxide nanoparticles are dispersed under vigorous stirring; (2) padding the silk fabric in the solution obtained in step (1) multiple times; (3) irradiating the padded silk fabric under microwaves; (4) Soak the irradiated silk fabric in saturated ammonium sulfate aqueous solution to solidify, then wash and dry. The preparation technology is simple and easy, the cost is low, the strength damage to the silk fabric is small, the surface properties of the silk fiber are not changed, and the titanium dioxide nanoparticles have good fastness on the silk fabric; no adhesive is used in the preparation process, and no Poison is harmless.

Description

technical field [0001] The invention relates to a method for preparing functional fabrics, in particular to a method for preparing photocatalyzed self-cleaning silk fabrics by using a thiocyanate aqueous solution. Background technique [0002] Functional fiber materials can be prepared by introducing nanoparticles into textile fibers. At present, there are many preparation methods for introducing nanoparticles into silk fibers, such as: adsorption method, sol-gel method, layer-by-layer assembly method, coating method, feeding method and so on. However, the adsorption method mainly uses the intermolecular van der Waals force and ionic bond force to make the nanoparticles adsorb to the surface of the silk fiber, and the washing fastness is low; the process of the sol-gel method and the layer-by-layer assembly method is long and difficult to control; The coating method is to use adhesives to bond nanoparticles to the surface of silk fibers, which reduces the skin affinity of s...

AI Technical Summary

Problems solved by technology

However, the adsorption method mainly uses the intermolecular van der Waals force and ionic bond force to make the nanoparticles adsorb to the surface of the silk fiber, and the washing fastness is low; the process of the sol-gel method and the layer-by-layer assembly method is long and difficult to control; The coating method is to use adhesives to bond nanoparticles to the surface of silk fibers, which reduces the skin affinity of silk fibers to the human body; the feeding method is to mix nanoparticles into silkworm food, so that silk fibers are mixed into nanoparticles. The disadvantage is efficiency. very low