The application of ammonium chloride in thefield of dyes and printing and dyeing is mainly reflected in the following aspects:
1. Dye fixing agent: ammonium chloride as afixing agent can enhance the fixation of dye on the fiber and improve the color fastness of the fabric. For example, small molecular quaternary ammonium salt color fixing agents such as dodecyl dimethyl benzyl ammonium chloride (1227),
cetyl trimethyl ammonium chloride (1631), etc., through ionic bonding with anionic soluble dyes to form dye lake, thereby improving the color fastness of dyed fabrics.
2. Dye stabilizer: ammonium chloride in thepreparation of some dyes, can play a role in protecting and stabilizing drug ingredients, to prevent dyes due to oxidation, hydrolysis or other reactions and loss of activity.
3. Printing and dyeing wastewatertreatment: Ammonium chloride is also used in printing and dyeing wastewater treatment, and can be used as a flocculant to help remove dyes and other
pollutants in wastewater.
4. Dyeing AIDS: ammonium chloride can beused as dyeing AIDS to help improve dyeing effect, improve dyeing efficiency and dyeing quality.
5. Levelling agent of cationic dyes:ammonium chloride as a levelling agent of cationic dyes is used in textile, printing and dyeing fields, which helps to improve dyeing uniformity.
6. Antistatic agent and softener: Ammoniumchloride as an antistatic agent, softener, etc., used in textile, fiber, leather and other fields, help to improve the performance and feel of textiles.
7. Controlled printing and assembly ofnanomaterials: Ammonium chloride is also used in nano green printing manufacturing technology. Controlled printing and assembly of nanomaterials can be achieved through the structure and wettability regulation of inorganic nanoparticles and plate materials, which has potential application value in the field of printing and dyeing.
In summary, ammonium chloride has a varietyof applications in the dye and printing and dyeing industry, which can not only improve the dyeing effect and product quality as a color fixing agent and stabilizer, but also play a role in wastewater treatment and textile performance improvement. With the development of technology, the application of ammonium chloride in the field of dyes and printing and dyeing may be further expanded and deepened.