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Polymerization Characteristics Of Cationic Dyes

Oct 12, 2017

Cationic Dye Dyeable (High Temperature) Polyester Fiber (CDPET) Generally, a third monomer, SIPM, is added during the polymerization process. If the third monomer is unevenly distributed in the macromolecular chain or the content is different, the fiber dyeing rate Different; improper dyeing process is also the cause of fabric dyeing uneven. The effects of fiber polymerization, spinning, spinning, weaving and dyeing on the dyeing unevenness were analyzed. The preventive measures were put forward.Cationic Dyes CDPET fiber dyeing prone to uneven dyeing problems, if only occurred in the weft, will lead to improved product cutting rate; if appeared in the warp, will lead to the face of quality disputes and claims. Dyeing uneven problems related to fiber manufacturing, spinning, weaving, printing and dyeing and other multi-channel processes, the cause of analysis and quality of the traceability is very difficult.Cationic Dyes CDPET fiber molecular weight, crystallinity, strength than ordinary polyester fiber is low, the anti-pilling characteristics of the fabric is better than ordinary polyester fiber, in the post-processing can be removed from the singeing process, which can be soft and plump, with wool Feel the fabric. CDPET fiber Young's modulus is lower than ordinary polyester fiber 10% to 30%, so its fabric is also more than ordinary polyester fiber soft, especially for the production of soft style of women. In addition, the basic hydrolysis rate of CDPET fibers is much greater than that of conventional polyester fibers. Therefore, the alkali reduction rate of CD-PET fibers is much higher than that of conventional polyester fiber fabrics at the same temperature.Cationic Dyes

CDPET fibers are typically added to the third monomer SIPM during the polyester polymerization process. When the distribution and content of the third monomer in the polymer chain is different, the fiber uptake rate is also different. In addition, the crystallinity and degree of orientation of the polymer are different, and the dyeing difference is also caused. The difference between the glass transition temperature (Tg), the melting temperature (Tm) and the melting enthalpy of the yarns of B yarns and B yarns, especially the difference between the melting temperature (Tm) and the melting enthalpy, indicates that this is due to the third monomer (SIPM) content Different, so that Tm and the degree of crystallinity is different, so the dye rate is different. From Tc point of view, A yarn Tc slightly higher than the B yarn, indicating that the third yarn A yarn content is higher than the B yarn, therefore, the former dyeing rate is higher than the latter.Cationic Dyes