Hence, any fabric containing the polyester is vulnerable to dye migration and bleeding. It results in the coloring of unintended areas. Dye migration is generally more on 100% polyester fabrics. Migration is a serious problem encountered both in dyeing and printing. It is the unwanted reaction between the dye and the fiber. Migration: Migration is the shifting of the color to the surrounding areas. It cannot be eliminated totally, but it can be minimized by proper handling during fabric washing. Diffusivethermal instability or thermodiffusive instability is an instrinsic flame instability that occurs both in premixed flames and in diffusion flames and arises because of the difference in the diffusion coefficient values for the fuel and heat transport, characterized by non-unity values of Lewis. Pilling: Pilling is the formation of fiber balls on the fabric surfaces, when a group of loose, or short and broken fibers get entangled or accumulated on the fabric after abrasion. Oligomers: Oligomers are still the biggest problem in wet processing of polyester fabric leading to variety of problems. Off shades is the biggest problem and it occurs due to combination of various factorsįollowing are also occurred during polyester dyeing with disperse dyes:.Moir effect due to heat setting problems and uneven relaxation of fabric tensions.Hard water can have significant effect on the color value of disperse dyes.Variations in the dyeing behavior of the fibers due to variations in their production or thermal pretreatments.Other problems of dyeing polyester with disperse dyes: Not disperse dye sensitive to temperature variation (disperse dye ☌ faction).Problems and solution are given in table: Problems Though dyeing of Polyester with Disperse Dye is very compatible, they have some problems occur during dyeing. Raise temperature to 130☌ and run for 45 minĬooling at 700☌ and sample cheek if shade ok then bath dropĪcetic wash at cold temperature for 10 minĪcetic acid + Softener is added at 450☌ and run for 10 minĭyeing Problems and Their Solution of Polyester with Disperse Dye: Raise temperature to 90☌ and run time 10 minĪdd Neutracid RBT (non-volatile acid) and run time 10 min This process is facilitated by molecular diffusion and. This does not always correlate with the light fastness on other fibers such as cellulose diacetate.ĭyeing flow chart of 100% polyester with disperse dye is shown in below: Dispersion is a process by which (in the case of solid dispersing in a liquid) agglomerated particles are separated from each other, and a new interface between the inner surface of the liquid dispersion medium and the surface of the dispersed particles is generated. Dyeing of polyester with disperse dyes have good light fastness. Dyeing is faster when using fiber swelling agents called carriers to improve the fiber accessibility, or when dyeing at higher temperatures above 100☌ to increase the dye diffusion rate. The rate of dyeing is higher for dyes of small molecular size that have higher diffusion coefficients. The rate of diffusion of disperse dyes into the polyester below 100☌ is so low that dyeing at the boil does not give reasonable exhaustion. At any temperature, the rate of dyeing of polyester with a given disperse dye is very much lower than for cellulose acetate or nylon fibers. Polyesters are essentially undyeable below 70–80☌, leaving only a 20–30☌ range for increasing the dyeing rate before reaching the boiling temperature. In this article I will discuss different problems and their solutions of polyester dyeing with disperse dyes. The dyeing of hydrophobic fibers like polyester fibers with disperse dyes may be considered as a process of dye transfer from liquid solvent (water) to a solid organic solvent (fiber). Polyester can be very difficult to dye properly. Polyester has been one of the most popular fibers, second to cotton as measured by production tonnage in recent years. Polyester is the synthetic fiber derived from coal, air, water, and petroleum. See supplementary material at for testing system, phase change module, physical parameters, and figures.Dyeing of Polyester Fabric with Disperse Dye: Hsu, in Proceedings of International Conference on Electron Devices and Solid-State Circuits (ICICDT) ( IEEE Conference Publications, 2008), pp. Bez, in Electron Devices Meeting (IEDM) ( IEEE Conference Publications, 2003), pp. Wong, in The Reliability Physics Symposium (IRPS) ( IEEE Conference Publications, 2010), pp.
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