Method for producing color changing fabric of optical powder manufacturer

At present, the color-changing technology has been applied to the textile industry. The appearance of color-changing textiles has been loved by many people. Color-changing T-shirts, color-changing skirts, color-changing swimsuits, etc. let us see the development of China's high-tech in these years. The discoloration caused by the application of photochromic compounds on textiles is wonderful. What are the production methods of such textiles?

Photo-powder manufacturers understand that the current preparation methods of photochromic textiles are mainly the following four.

1 paint printing method

In the paint printing method, a photochromic dye powder is mixed in a binder such as a resin liquid, and then the fabric is printed with a color paste, and a photochromic fabric is obtained by a procedure such as fixation, water washing, and drying. Photo-powder manufacturers believe that this method is not selective for fibers and fabrics, and is suitable for both woven and knitted fabrics. The color-changing paint used for printing processing should meet the requirements of soft hand feeling, good washing resistance and good rubbing fastness.

2 stock solution coloring method

The raw liquid coloring refers to a method of producing a photochromic fiber by uniformly dispersing a photochromic compound in a spinning solution of various chemical fibers. According to the difference of the spinning solution, it can be divided into two categories.

(1) Melt spinning

The photochromic compound is melt-blended with a polymer such as polyester or poly**, or the photochromic compound is dispersed in a resin carrier capable of being mixed with the spinning polymer to form a masterbatch, and then mixed into a polymer. Photochromic fibers are obtained by melt spinning in polymerization of ester, poly** and the like.

(2) solution spinning

Similar to the conventional solution spinning method, it is necessary to add a dye having a reversible color function and a dye transfer preventing agent to the fiber-forming spinning solution, that is, directly adding the photochromic compound and the agent for preventing the transfer thereof to the spinning. Spinning in the liquid.

3 graft polymerization

The graft polymerization method mainly uses graft polymerization technology to impart discoloration properties to the fibers. Light-powder manufacturers give an example of impregnating fibers or fabrics with monomers containing spiropyran derivatives, and monomers (generally *** or ** ethylene) are grafted in the fibers to give the fibers light. Color change performance.

4 ink printing method

This is an application method based on microcapsule technology. Photo-powder manufacturers introduce so-called microcapsules, which are used to put photochromic compounds together with other auxiliaries (solvents, light stabilizers, etc.), using natural or synthetic polymers or microbial membranes, through phase separation, interfacial reaction, The physical method is wrapped into small balls of several micrometers to several tens of micrometers to avoid the influence of high temperature and other impurities, and to strengthen contact with other additives. The color-changing microcapsules are then fixed to the surface of the fabric by ink printing to obtain a photochromic fabric.