Work flow of active fixing agent
The first thing to know is that dyes are dyed on different fibers, and their dyeing mechanism and color fastness are different, so the fixing agent mechanism and application of the fixing agent used are also different.
Utilize the quaternary ammonium salt or tertiary amine salt in the fixing agent molecule to bond with the anionic group in the ionic dye structure to make the dye and the fixing agent form an insoluble color block to settle on the fiber, thereby improving the dye Color fastness on the fabric.
The reactive group in the fixing agent molecule is cross-linked with the reactive group on the dye molecule and the hydroxyl group on the cellulose molecule to reduce the water solubility of the dye.
The film-forming properties of the active fixing agent on the fabric improve its color fastness. In the high-temperature drying process of the dye-fixing agent treated fabric, the reactive groups on the dye-fixing agent molecules cross-link into macromolecules by themselves, forming a protective film with a certain strength on the surface of the fabric and fiber to coat the dye On the fiber, the dye is not easy to fall off.