Polyester fabric with good color fixation and preparation method thereof

Abstract

The invention discloses a polyester fabric with good color fixation and a preparation method thereof, and relates to the field of textiles. According to the polyester fabric with the good color fixation and the preparation method thereof, the polyester fabric comprises a polyester fabric body, a first PU coating, a second PU coating and a PVC calendering film, the first PU coating and the second PU coating are arranged on the two sides of the polyester fabric body respectively, and the PVC calendering film is arranged on the side, away from the polyester fabric body, of the first PU coating; the preparation method comprises the following steps: preparing polyester fibers, preparing filaments, spinning and carrying out after-treatment. During spinning, polyester fabric is subjected to pretreatment and fabric dyeing; the after treatment comprises the first PU coating, the second PU coating and the PVC calendering film. According to the polyester fabric with good color fixation and the preparation method thereof, disperse dyes which are small and similar in thermal migration are selected, due to the fact that the molecular weight of dye structures is large and affinity with polyesterfibers is large, the dye structures are difficult to migrate to the surface from the interior of the fibers, and high-temperature and high-pressure dyeing has the advantages of being bright in coloredlight, good in dye permeability, good in fabric hand feeling and high in dye fixation rate.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a polyester cloth with good color fixing property and a preparation method thereof. Background technique [0002] Polyester is an important variety of synthetic fibers and is the trade name of polyester fibers in my country. It is a fiber-forming high polymer prepared from purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (MEG) through esterification or transesterification and polycondensation reactions—— Polyethylene terephthalate (PET), a fiber made by spinning and post-processing. [0003] During the finishing high-temperature setting, part of the dye is affected by dry heat or hot and humid air through the fiber capillary and migrates from the inside of the fiber to the fiber surface, resulting in the accumulation and redistribution of the dye on the fiber surface. The remnants on the surface will aggravate its generation. Since this ther...

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Problems solved by technology

[0003] During the finishing high-temperature setting, part of the dye is affected by dry heat or hot and humid air through the fiber capillary and migrates from the inside of the fiber to the fiber surface, resulting in the accumulation and redistribution of the dye on the fiber surface. The remnants on the surface will aggravate its generation. Since this thermal migration is mainly related to the structure of the dye itself, and the thermal migration of disperse dyes with different structures is also different, and the difference between them is also large. Therefore, after finishing high temperature When setting the shape, especially when using silicone oil and antistatic, because it contains a certain amount of surfactants, and when these additives are unevenly adsorbed on the cloth surface, including the uneven pH of the cloth surface, the so-called color flowers mentioned above will occur. Color change, fastness decline, such as rubbing, washing, staining and other problems, this phenomenon often manifests as one or more coexistence, which brings hidden dangers and harms that are difficult to overcome to the dyeing quality, so we put forward the color fixing method. Good polyester cloth and preparation method thereof

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