Focus on popularizing knowledge about flame retardant fabric dyeing
Focus on popularizing knowledge about dyeing flame retardant fabrics
The dyeing of flame-retardant fabrics must not only focus on the brightness of the color, but also require low-carbon and environmental protection. Easily dyeable and deeply dyed fibers meet this requirement. Easy dyeing, deep dyeing, and low temperature dyeing overcome the difficulties of conventional dyeing and the shortcomings of dyeing under high temperature and high pressure conditions, and the colors are more vivid. It greatly reduces the dyeing costs of enterprises and achieves the effects of low-carbon environmental protection, energy saving and emission reduction.
When blending natural fibers or some chemical fibers, there are many problems such as difficulty in controlling the dyeing process, increased dyeing costs, increased dye content in wastewater, and increased wastewater treatment costs, and will cause great damage to fiber properties. Therefore, the dyeing modification of polyester fiber has always been the focus of research and development.
Easy-to-dye and deep-dye fibers successfully solve many problems in fiber dyeing and modification. This kind of fiber adopts copolymerization, grafting and other methods to add third monomer components such as isophthalic acid sulfonate to the PET macromolecular chain. The anions on these groups easily interact with the cations in the cationic dyes to cause The dye is fixed in the fiber. Due to the addition of new groups to the macromolecular chain, the original structure of the fiber is destroyed, resulting in a decrease in the melting point, glass transition temperature and crystallinity of the fiber. The increase in the amorphous area of the fiber is conducive to the penetration of dye molecules into the fiber, allowing it to be dyed with cationic dyes under normal pressure, or adding a fourth monomer component to the PET macromolecular chain, such as introducing a polyethylene glycol flexible chain The segments make the molecular structure looser and the amorphous area enlarged, which is beneficial for the dye molecules to penetrate into the fiber and combine with the anionic groups in the fiber, allowing dyeing at normal temperature and pressure.
Easy-to-dye and deep-dye polyester have the characteristics of being easy to dye into dark colors and bright colors. The product has high color fastness and a wide color spectrum. It not only overcomes the shortcomings of high dyeing temperature of conventional polyester, but also has the advantages of good air permeability and moisture permeability. After being blended, combined, and interwoven with other fibers, it can be dyed to obtain heterochromatic or multi-color effects. Contact, Xinke Special Textile Telephone – 400-628-3538 Dyed and deep-dyed fibers have lower dyeing temperature, lower energy consumption and higher efficiency. Easy-to-dye and deep-dye fibers are comparable to natural fibers in terms of dyeing brightness and wearing comfort. They can be directly woven into high-end fabrics or compounded with other synthetic fibers and natural fibers. 085yISJ
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