High-colour-fastness composite fiber capable of preventing dye from sensitizing and causing cancer, and preparation method for high-colour-fastness composite fiber

Abstract

The invention relates to a high-colour-fastness composite fiber capable of preventing a dye from sensitizing and causing cancer, and a preparation method for the high-colour-fastness composite fiber,belongs to the technical field of chemical fiber production, and solves the problems that an existing composite fiber has poor colour fastness, the dye is likely to cause sensitizing even cause cancer, a dye selection range is narrow and production cost is high. The composite fiber comprises a core layer and a skin layer which coats the outer surface of the core layer, wherein the core layer is prepared from polyester and coloring agents, the skin layer is prepared from polyethylene and polyethylene master batches, and the polyethylene master batches are obstruction master batches. The high-colour-fastness composite fiber capable of preventing the dye from sensitizing and causing cancer has high colour fastness, low production cost and small environment pollution.

Description

technical field [0001] The invention relates to the technical field of chemical fiber production, in particular to a composite fiber with high color fastness and anti-sensitization and carcinogenicity of dyes and a preparation method thereof. Background technique [0002] At present, the most commonly used chemical fibers in clothing, such as polyester, nylon, polypropylene, acrylic, spandex, etc., have a white natural color. Fibers, yarns, fabrics or garments are dyed into desired colors by different methods. Because printing and dyeing have caused great pollution to the environment, so now focus on the development of pre-spinning coloring, that is, directly adding masterbatch or colorant during melt spinning, and spinning into required colored yarn. Colorants can be broadly classified into pigments and fuels. Most of the pigments are mineral salts, which are not easy to undergo color sublimation or color migration, and have stable dyeing, but are not easy to disperse, dif...

AI Technical Summary

Problems solved by technology

Most of the pigments are mineral salts, which are not prone to color sublimation or color migration, stable dyeing, but not easy to disperse, difficult to spin fine denier yarns, poor coloring power, and high cost

The dye can be dissolved, easily dispersed at the molecular level, easy to spin fine denier yarn, low consumption, strong tinting strength, low cost, but prone to color sublimation and color migration, and some dyes are likely to cause allergies and even cancer.

[0003] For textiles, color migration is very common: for example, during the production process, because the fiber surface additives can dissolve the dye at high temperature, the high temperature makes the dye inside the fiber migrate from the inside of the fiber through the expanded fiber capillary To the surface of the fiber, it will migrate in the opposite direction to the dyeing, causing the dye to accumulate on the surface of the fiber, resulting in a difference in the overall color of the fabric; in the production process, many softeners and water repellents are used, they will also dissolve the dye, so that the dye on the fabric dissolves Swimming and migrating to the surface of the fiber in the carrier, causing a series of quality problems: color change, staining during ironing, friction resistance, water resistance, light fastness decline, etc.; in coated fabrics, dyes from the fabric to the coating Bleeding of layers; wind printing of fabrics in the production process; color migration of dyed textiles during storage and transportation

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