Preparation method of high-cleanliness ultrashort viscose fibers for papermaking

Abstract

The invention provides a preparation method of high-cleanliness ultrashort viscose fibers for papermaking. The preparation method comprises the following steps of (1) bleaching; (2) neutralizing; (3) water washing; (4) mould prevention; and (5) cutting. The component TAED is tetraacetylenediamine and has excellent low-temperature bleaching performance and good environmental protection performance; the adopted bleaching agent TAED is different from sodium hypochlorite with strong oxidability, the damage to a viscose fiber tow crystallization area is low, and good physical performance is kept; an auxiliary agent with a formula of hydrogen peroxide, TAED and sodium carbonate is adopted, so that bleaching is uniform, and the internal and external whiteness of viscose fiber tows is consistent; citric acid is adopted for neutralization, and traditional glacial acetic acid is not used, so that the peculiar smell is reduced; the finished fibers are in a wet state; and a small amount of hydrogen peroxide is finally added for mould-proof treatment in order to avoid mould generation, so that the ultrashort viscose fibers can be stored for a long time.

Description

technical field [0001] The invention belongs to the field of light industry textiles, and in particular relates to a preparation method of ultra-short viscose fibers with high cleanliness for papermaking. Background technique [0002] The textile industry is a traditional industry in China. With the rapid development of clothing, household and industrial textiles, the differentiation and individualization of textile products have become the focus of the development of various enterprises. Functional fibers as high-grade textile raw materials are generally improved by means of physical modification, chemical modification and molecular design to obtain fibers with specific properties, so that the original viscose fibers are stable in light and heat, conductive, Flame retardant, dyeing, antistatic, moisture absorption, fluffy, anti-pilling, anti-fouling and other aspects have been greatly improved. [0003] The main application field of ultra-fine and ultra-short viscose fiber...

AI Technical Summary

Problems solved by technology

[0004] The preparation method of the ultra-short viscose fiber currently used is through impregnation, aging, yellowing, ripening, spinning, drawing, and after-treatment of the tow (desulfurization, bleaching, washing), which cannot be used in the preparation process. The impurities in the glue fiber tow are removed, and the advancing speed of the viscose fiber tow is mostly 30-60m / min, and the advancing speed is fast. In order to fully bleach the viscose fiber tow, a strong oxidant sodium hypochlorite bleach is used. The damage to viscose fiber tow is relatively large, and the speed of advance is fast, and the whiteness of viscose fiber tow will also be uneven inside and outside; the bleaching temperature of viscose fiber tow is above 55°C, which wastes energy and has Odor is produced, causing respiratory system damage to the human body

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