Semi-dull high-strength low-elongation viscose fiber as well as preparation method and application thereof

Abstract

The invention provides a semi-dull high-strength low-elongation viscose fiber as well as a preparation method and application thereof. The viscose fiber is obtained by sequentially performing soaking, grinding, squeezing crushing, kneading, directional polymerization reduction, yellowing, dissolving, filtering, defoaming, curing, spinning drawing and after-treatment on a pulp raw material, and has an index system that the dry fracture strength is more than or equal to 3.20cN / dtex, the wet fracture strength is more than or equal to 1.70cN / dtex, the strength needed for generating 5% of the elongation in a wet state is more than or equal to 0.6cN / dtex, the dry elongation at break is 13.0-16%, and the wet elongation at break is 16.0-21.0%. The semi-dull high-strength viscose fiber provided by the invention is prepared by virtue of technical innovation, and is a novel fiber variety which has an index system different from that of ordinary viscose fibers and Modal fibers, and a product of the fiber shows high and strong fiber characteristics and also shows skin affinity stronger than that of cotton fibers, so that the semi-dull high-strength low-elongation viscose fiber can effectively replace the existing differentiation viscose fiber, the development and the industrial upgrading of downstream novel textiles can be promoted while the processability of the downstream process of the viscose fiber is improved, and the semi-dull high-strength low-elongation viscose fiber can be well applied to the field of producing underclothes and high-grade woven fabrics.

Description

technical field [0001] The invention relates to the technical field of viscose fiber, in particular to a semi-dull high-strength low-elongation viscose fiber and a preparation method and application thereof. Background technique [0002] Textile fiber raw materials are mainly divided into natural fiber raw materials represented by cotton and hemp, petroleum-based fiber raw materials represented by polyester and acrylic fibers, and tencel, cupro ammonia fiber, Viscose fiber and other bio-based fiber raw materials. Cotton fiber is well-known for its comfort, softness, breathability, and close-fitting qualities. It accounts for about 36% of the total textile fiber market. The nutritional content of cotton, and the reduction of cotton planting soil area in countries all over the world to ensure the food supply of the global population have limited the cultivation of cotton, and the shortage of cotton fiber raw materials cannot meet the growing needs of people's living standards...

AI Technical Summary

Problems solved by technology

[0009] Only the above-mentioned published patent documents can know that in order to produce differentiated and functional viscose fibers, the prior art is realized by changing the production process, which involves raw materials, viscose molding and its process parameters Compared with ordinary viscose fiber, the obtained viscose fiber has been properly optimized in terms of fineness and strength, but for the increasingly fierce market competition, the differentiated viscose fiber does not meet the downstream needs to a greater extent. The development of new textiles and industrial upgrading, especially the development of fiber raw materials such as tencel, modal, and cupro fibers, which are also regenerated from natural cellulose materials, have reduced the market share of viscose fibers.

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