Semi-dull high-intensity low-elongation viscose fiber and preparing method thereof

Abstract

The invention provides semi-dull high-intensity low-elongation viscose fiber and a preparing method of the semi-dull high-intensity low-elongation viscose fiber. The viscose fiber is obtained through sequentially carrying out soaking, grinding, pressing and crushing, kneading, polymerization reduction, yellowing, dissolution, filtering, defoaming, aging, spinning traction and post treatment on pulp raw materials. The viscose fiber has the following indexes that the fiber number is 1.11 to 1.67 dtex, the dry fracture intensity is greater than or equal to 3.10cN / dtex, the wet fracture intensity is higher than or equal to 1.60cN / dtex, the intensity required for generating the 5-percent elongation rate in the wet state is higher than or equal to 0.55N / dtex, and the dry fracture elongation rate is 11.0 to 19.0 percent. The high-intensity low-elongation viscose fiber related by the invention is a novel fiber variety realized through technical innovation, an index system is different from that of ordinary viscose fiber and modal fiber; a product shows the high-intensity and low-elongation fiber features of the modal fiber, and also shows the higher skin affinity than cotton fiber; the existing differentiated viscose fiber can be effectively replaced; the downstream work procedure processing performance of the viscose fiber is improved; meanwhile, the development and the industrial updating of downstream novel textiles can also be promoted.

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 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. Viscose stapl...

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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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