Formaldehyde-free Fixing Agent is an auxiliary agent that can improve all kinds of color fastness. The following is the principle of use of fixing agent.
1.Formaldehyde-free Fixing Agent It can form a net-like film on the fabric to prevent the dye from falling off.
2. Increase the fixing strength according to the molecular attraction between the Formaldehyde-free Fixing Agent and the fiber, thereby improving the fastness of dyeing. Because the reactive group in the fixing agent molecule can cross-link with the reactive group on the dye molecule and the hydroxyl group on the cellulose molecule, so as to improve the fixing effect of the dye on the fiber.
3. The buffering capacity of the Formaldehyde-free Fixing Agent can be neutralized with the acidic substances in the sweat, effectively preventing the covalent bond breakage formed by the active dyeing material and the fiber, thereby improving the sweat fastness of the fabric.
4. Because of its smoothing agent effect, it can greatly reduce the friction coefficient of the fiber surface, thereby effectively improving the rubbing fastness of dyed fabrics.
5. Utilizing the absorption of ultraviolet rays in sunlight by the ultraviolet absorbing group, the ultraviolet absorber can be grafted into the fixing agent molecule to prevent the damage of the dyeing structure by ultraviolet rays, thereby improving the light fastness.