Dyeing and finishing is one of the most important links in textile industry, and the application of methylurea in it includes dyeing auxiliaries, deepening agents and durability treatment. Moreover, the rise of functional textiles puts forward higher requirements for textile materials, and the chemical modification ability of methylurea makes it have broad application prospects in this field.
The Role of Methylurea in Dyeing and Finishing
Dyeing auxiliary
As a dyeing assistant, Methylurea can improve the adhesion and permeability of dyes on fibers;
Dispersion enhancement: Metilurea can significantly improve the dispersibility of dyes by forming hydrogen bonds or weak interactions with disperse dye molecules.
Dyeing uniformity: Metilurea modification additive can reduce the surface tension of fiber, make the dye cover the surface of fiber more evenly, and reduce the problem of color spots.
Deepening finishing
Metilurea can be used to prepare deepening finishing agent to improve the color depth of textiles;
Mechanism of action: Metilurea enhances the fastness of dye on fiber by combining with dye molecules, thus improving the color depth and color fastness.
Wide applicability: Metilurea deepening agent is suitable for cotton, polyester, nylon and other fibers.
Durability treatment
In the process of dyeing and finishing, n methyl urea improves the durability of fiber through crosslinking reaction, so that the dye can withstand the test of washing and friction, thus prolonging the service life of textiles.
Application of Methylurea in the Development of Functional Textiles
Antibacterial textiles
Metilurea can be used to prepare antibacterial functional textiles by combining with metal ions (such as silver and copper);
Antibacterial mechanism: Metilurea can inhibit the growth of microorganisms after combining with silver ions, and is used in medical textiles and protective clothing.
Durability enhancement: Metilurea modified antibacterial agent can be firmly combined with fiber surface to improve the durability of antibacterial effect.
Ultraviolet protection function
The combination of n methyl urea and ultraviolet absorber can be used to prepare textile materials with sunscreen properties, which can be used in outdoor sportswear and sunshade products.
Conductive textiles
Metilurea can be used to develop conductive fibers for smart textiles through the synergistic effect with conductive molecules (such as polyaniline).
The Role of Methylurea in Environmental Protection Dyeing and Finishing Technology
With the increasingly strict environmental protection laws and regulations, the textile industry needs to develop greener production processes. The low toxicity and good degradation of methylurea make it play an important role in environmental protection dyeing and finishing technology.
Low formaldehyde finishing technology
Using n methyl urea instead of urea can significantly reduce the release of formaldehyde during crease-resistant finishing, while maintaining good finishing effect.
Aqueous dyeing and finishing system
Metilurea has good solubility and reactivity in water phase, which can complete dyeing and finishing under the condition of water phase and reduce the use of organic solvents.
Development of degradation AIDS
The additive modified by n methyl urea can be degraded quickly after use, reducing long-term pollution to the environment.
Metilurea as an important pharma intermediate. The application of methylurea in textile industry covers many aspects from the development of additives to the production of functional textiles. Its low toxicity and high reactivity make it an important chemical to promote the development of green textiles and high-performance materials. In the future, through process optimization and technological innovation, n methyl urea will provide more possibilities for the textile industry and contribute to the sustainable development of the industry.