Regenerated cellulose fibers and preparation method thereof

Abstract

The invention provides regenerated cellulose fibers and a preparation method thereof. The regenerated cellulose fibers are characterized in that the dry fracture strength is more than or equal to 1.85CN / dtex; the wet fracture strength is more than or equal to 0.90CN / dtex; the residual sulfur content is less than or equal to 25.0mg / 100mg; and the whiteness is 20-60%. The preparation method comprises the following process flows: cooking, adjusting the degree of polymerization, performing acid treatment, performing papermaking, impregnating, squeezing, crushing, ageing, yellowing, dissolving, filtering, defoaming, spinning, cutting, refining, drying and packaging. The regenerated cellulose fibers are also characterized in that the natural ingredients of plant raw materials are kept, the fibers show natural khaki without any dyeing treatment, and the whiteness is 20-60%. The fibers are soft in hand feeling, natural in luster and color, have good skin affinity, completely meet 'technical requirements on ecological textiles' (articles in direct contact with skins), and are significant in bacteriostatic and antibacterial effects, so that a novel type of fiber is provided for the textile field.

Description

technical field [0001] The invention relates to a regenerated cellulose fiber and a preparation method, in particular to a fiber prepared from one or two or more of wood, bamboo and hemp as raw materials. Background technique [0002] At present, since the production of regenerated cellulose fiber uses chemical fiber pulp as raw material, the pulping process of traditional chemical fiber pulp is still aimed at preparing high-purity cellulose, so that the utilization rate of raw materials is low, such as the utilization of wood The utilization rate of bamboo is only 40%, the utilization rate of bamboo is only 30%, and the utilization rate of hemp is only about 45%. In addition, a large amount of chemicals are consumed in the production process, and a large amount of waste is generated, which directly or indirectly affects the environment. . [0003] The traditional regenerated cellulose fiber is white, and it needs to be dyed in the process of making colorful textiles, or th...

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Problems solved by technology

[0002] At present, since the production of regenerated cellulose fiber uses chemical fiber pulp as raw material, the pulping process of traditional chemical fiber pulp is still aimed at preparing high-purity cellulose, so that the utilization rate of raw materials is low, such as the utilization of wood The utilization rate of bamboo is only 40%, the utilization rate of bamboo is only 30%, and the utilization rate of hemp is only about 45%. In addition, a large amount of chemicals are consumed in the production process, and a large amount of waste is generated, which directly or indirectly affects the environment.

[0003] The traditional regenerated cellulose fiber is white, and it needs to be dyed in the process of making colorful textiles, or the method of injecting colored slurry before spinning is used in the fiber production process to produce fibers of different colors, but it is inevitable The production of dyed wastewater has caused pollution hazards to the natural environment, and repeated pollution accidents have always been the focus of attention throughout the country. Therefore, protecting the environment is the duty of every citizen.

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